UNITED STATES SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 10-K
(Mark One)
ýANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the fiscal period ended December 31, 20152016 or
¨TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from________to________
Commission
file number
 Registrant, State of Incorporation or Organization, Address of Principal Executive Offices and Telephone Number 
IRS Employer
Identification No.
  
  
1-32853 
DUKE ENERGY CORPORATION
(a Delaware corporation)
550 South Tryon Street
Charlotte, NC 28202-1803
704-382-3853
 20-2777218
Commission file number Registrant, State of Incorporation or Organization, Address of Principal Executive Offices, Telephone Number and IRS Employer Identification Number Commission file number Registrant, State of Incorporation or Organization, Address of Principal Executive Offices, Telephone Number and IRS Employer Identification Number
1-4928 
DUKE ENERGY CAROLINAS, LLC
(a North Carolina limited liability company)
526 South Church Street
Charlotte, North Carolina 28202-1803
704-382-3853
56-0205520
 1-3274 
DUKE ENERGY FLORIDA, LLC
(formerly DUKE ENERGY FLORIDA, INC.)
(a Florida limited liability company)
299 First Avenue North
St. Petersburg, Florida 33701
704-382-3853
59-0247770
1-15929 
PROGRESS ENERGY, INC.
(a North Carolina corporation)
410 South Wilmington Street
Raleigh, North Carolina 27601-1748
704-382-3853
56-2155481
 1-1232 
DUKE ENERGY OHIO, INC.
(an Ohio corporation)
139 East Fourth Street
Cincinnati, Ohio 45202
704-382-3853
31-0240030
1-3382 
DUKE ENERGY PROGRESS, LLC
(formerly DUKE ENERGY PROGRESS, INC.)
(a North Carolina limited liability company)
410 South Wilmington Street
Raleigh, North Carolina 27601-1748
704-382-3853
56-0165465
 1-3543 
DUKE ENERGY INDIANA, LLC
(formerly DUKE ENERGY INDIANA, Inc.)
(an Indiana limited liability company)
1000 East Main Street
Plainfield, Indiana 46168
704-382-3853
35-0594457
SECURITIES REGISTERED PURSUANT TO SECTION 12(B)12(b) OF THE ACT:
Registrant Title of each class 
Name of each exchange on
which registered
Duke Energy Corporation (Duke
(Duke Energy)
 Common Stock, $0.001 par value New York Stock Exchange, Inc.
Duke Energy 5.125% Junior Subordinated Debentures due January 15, 2073 New York Stock Exchange, Inc.
Duke Energy Carolinas, LLC (Duke Energy Carolinas)All of the registrant's limited liability company member interests are directly owned by Duke Energy.
Progress Energy, Inc. (Progress Energy)All of the registrant's common stock is directly owned by Duke Energy.
Duke Energy Progress, LLC (Duke Energy Progress)All of the registrant's limited liability company member interests are directly owned by Duke Energy.
Duke Energy Florida, LLC (Duke Energy Florida)All of the registrant's limited liability company member interests are directly owned by Duke Energy.
Duke Energy Ohio, Inc. (Duke Energy Ohio)All of the registrant's common stock is indirectly owned by Duke Energy.
Duke Energy Indiana, LLC (Duke Energy Indiana)All of the registrant's limited liability company member interests are directly owned by Duke Energy.


SECURITIES REGISTERED PURSUANT TO SECTION 12(G)12(g) OF THE ACT:  None
Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act
Duke Energy
Yes x
 
No ¨
 Duke Energy Florida, LLC (Duke Energy Florida)
Yes x
 
No ¨
Duke Energy Carolinas, LLC (Duke Energy Carolinas)
Yes x
 
No ¨
 Duke Energy Ohio, Inc. (Duke Energy Ohio)
Yes ¨x
 
No x¨
Progress Energy, Inc. (Progress Energy)
Yes ¨
 
No x
 Duke Energy Indiana, LLC (Duke Energy Indiana)
Yes ¨x
 
No x¨
Duke Energy Progress, LLC (Duke Energy Progress)
Yes x
 
No ¨
     
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Exchange Act.
Yes ¨ No x (Response applicable to all registrants.)
Indicate by check mark whether the registrants (1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No ¨
Indicate by check mark whether the registrants have submitted electronically and posted on their corporate website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes x No ¨
Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.
Duke Energy
Yes ¨ (Only applicable to Duke Energy)x
No ¨
Duke Energy Florida
Yes x
No ¨
Duke Energy Carolinas
Yes x
No ¨
Duke Energy Ohio
Yes x
No ¨
Progress Energy
Yes x
No ¨
Duke Energy Indiana
Yes x
No ¨
Duke Energy Progress
Yes x
No ¨
Indicate by check mark whether Duke Energy is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one): Large accelerated filer x  Accelerated filer ¨  Non-accelerated filer ¨  Smaller reporting company ¨
Indicate by check mark whether Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio and Duke Energy Indiana are large accelerated filers, accelerated filers, non-accelerated filers, or smaller reporting companies. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):  Large accelerated filer ¨  Accelerated filer ¨  Non-accelerated filer x Smaller reporting company ¨
Indicate by check mark whether the registrants are a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ¨ No x
Estimated aggregate market value of the common equity held by nonaffiliates of Duke Energy at June 30, 2015.48,570,203,631
Number of shares of Common Stock, $0.001 par value, outstanding at January 31, 2016.688,377,923
Estimated aggregate market value of the common equity held by nonaffiliates of Duke Energy at June 30, 2016.$59,060,642,963
Number of shares of Common Stock, $0.001 par value, outstanding at January 31, 2017.699,607,929
DOCUMENTS INCORPORATED BY REFERENCE
Portions of the Duke Energy definitive proxy statement for the 20152017 Annual Meeting of the Shareholders or an amendment to this Annual Report are incorporated by reference into PART II, Item 5 and PART III, Items 10, 11, 12 and 13 hereof.
This combined Form 10-K is filed separately by seven registrants: Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio and Duke Energy Indiana (collectively the Duke Energy Registrants). Information contained herein relating to any individual registrant is filed by such registrant solely on its own behalf. Each registrant makes no representation as to information relating exclusively to the other registrants.
Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio and Duke Energy Indiana meet the conditions set forth in General Instructions I(1)(a) and (b) of Form 10-K and are, therefore, filing this formForm 10-K with the reduced disclosure format specified in General Instructions I(2) of Form 10-K. 





TABLE OF CONTENTS
FORM 10-K FOR THE YEAR ENDED December 31, 20152016
Item
 Page Page
    
CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATIONCAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION 
    
GLOSSARY OF TERMSGLOSSARY OF TERMS GLOSSARY OF TERMS 
    
PART I.    
1.
    
1A.
  
1B.
  
2.
  
3.
  
4.
    
PART II.    
5.
    
6.
    
7.
    
7A.
    
8.
    
9.
    
9A.
    
PART III.    
10.
    
11.
    
12.
    
13.
    
14.
    
PART IV.    
15.





CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION
This document includes forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Forward-looking statements are based on management’s beliefs and assumptions and can often be identified by terms and phrases that include “anticipate,” “believe,” “intend,” “estimate,” “expect,” “continue,” “should,” “could,” “may,” “plan,” “project,” “predict,” “will,” “potential,” “forecast,” “target,” “guidance,” “outlook” or other similar terminology. Various factors may cause actual results to be materially different than the suggested outcomes within forward-looking statements; accordingly, there is no assurance that such results will be realized. These factors include, but are not limited to:
State, federal and foreign legislative and regulatory initiatives, including costs of compliance with existing and future environmental requirements or climate change, as well as rulings that affect cost and investment recovery or have an impact on rate structures or market prices;
The extent and timing of costs and liabilities to comply with federal and state laws, regulations and legal requirements related to coal ash remediation, including amounts for required closure of certain ash impoundments, are uncertain and difficult to estimate;
The ability to recover eligible costs, including amounts associated with coal ash mitigation such as coal ash impoundment retirement obligations and costcosts related to significant weather events, and to earn an adequate return on investment through the regulatory process;
The costs of decommissioning Crystal River Unit 3 and other nuclear facilities could prove to be more extensive than amounts estimated and all costs may not be fully recoverable through the regulatory process;
Credit ratings of the Duke Energy Registrants may be different from what is expected;
Costs and effects of legal and administrative proceedings, settlements, investigations and claims;
Industrial, commercial and residential growth or decline in service territories or customer bases resulting from variations in customer usage patterns, including energy efficiency efforts and use of alternative energy sources, including self-generation and distributed generation technologies;
Federal and state regulations, laws and other efforts designed to promote and expand the use of energy efficiency measures and distributed generation technologies, such as rooftopprivate solar and battery storage, in Duke Energy service territories could result in customers leaving the electric distribution system, excess generation resources as well as stranded costs;
Advancements in technology;
Additional competition in electric and natural gas markets and continued industry consolidation;
Political, economic and regulatory uncertainty in Brazil and other countries in which Duke Energy conducts business;
The influence of weather and other natural phenomena on operations, including the economic, operational and other effects of severe storms, hurricanes, droughts, earthquakes and tornadoes;tornadoes, including extreme weather associated with climate change;
The ability to successfully operate electric generating facilities and deliver electricity to customers including direct or indirect effects to the company resulting from an incident that affects the U.S. electric grid or generating resources;
The ability to complete necessary or desirable pipeline expansion or infrastructure projects in our natural gas business;
Operational interruptions to our natural gas distribution and transmission activities;
The availability of adequate interstate pipeline transportation capacity and natural gas supply.
The impact on facilities and business from a terrorist attack, cybersecurity threats, data security breaches and other catastrophic events, such as fires, explosions, pandemic health events or other similar occurrences;
The inherent risks associated with the operation and potential construction of nuclear facilities, including environmental, health, safety, regulatory and financial risks;
The timing and extent of changes in commodity prices, interest rates and foreign currency exchange rates and the ability to recover such costs through the regulatory process, where appropriate, and their impact on liquidity positions and the value of underlying assets;
The results of financing efforts, including the ability to obtain financing on favorable terms, which can be affected by various factors, including credit ratings, interest rate fluctuations and general economic conditions;
Credit ratings of the Duke Energy Registrants may be different from what is expected;
Declines in the market prices of equity and fixed incomefixed-income securities and resultant cash funding requirements for defined benefit pension plans, other post-retirement benefit plans and nuclear decommissioning trust funds;
Construction and development risks associated with the completion of the Duke Energy Registrants’ capital investment projects, including risks related to financing, obtaining and complying with terms of permits, meeting construction budgets and schedules and satisfying operating and environmental performance standards, as well as the ability to recover costs from customers in a timely manner, or at all;
Changes in rules for regional transmission organizations, including changes in rate designs and new and evolving capacity markets, and risks related to obligations created by the default of other participants;
The ability to control operation and maintenance costs;
The level of creditworthiness of counterparties to transactions;
Employee workforce factors, including the potential inability to attract and retain key personnel;
The ability of subsidiaries to pay dividends or distributions to Duke Energy Corporation holding company (the Parent);


The performance of projects undertaken by our nonregulated businesses and the success of efforts to invest in and develop new opportunities;





The effect of accounting pronouncements issued periodically by accounting standard-setting bodies;
Substantial revision to the U.S. tax code, such as changes to the corporate tax rate or a material change in the deductibility of interest;
The impact of potential goodwill impairments;
The ability to reinvest prospective undistributed earnings of foreign subsidiaries or repatriate such earnings on a tax-efficient basis;
The expected timing and likelihood of completion of the proposed acquisition of Piedmont Natural Gas Company, Inc. (Piedmont), including the timing, receipt and terms and conditions of any required governmental and regulatory approvals of the proposed acquisition that could reduce anticipated benefits or cause the parties to abandon the acquisition, and under certain specified circumstance pay a termination fee of $250 million, as well as the ability to successfully integrate the businesses and realize anticipated benefits and the risk that the credit ratings of the combined company or its subsidiaries may be different from what the companies expect; and
The ability to successfully complete future merger, acquisition or divestiture plans.plans; and
The ability to successfully integrate the natural gas businesses following the acquisition of Piedmont Natural Gas Company, Inc. and realize anticipated benefits.
Additional risks and uncertainties are identified and discussed in the Duke Energy Registrants' reports filed with the SEC and available at the SEC's website at www.sec.gov. In light of the variousthese risks, uncertainties and assumptions, the events described in the forward-looking statements might not occur or might occur to a different extent or at a different time than described. Forward-looking statements speak only as of the date they are made;made and the Duke Energy Registrants expressly disclaim an obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.





Glossary of Terms 
The following terms or acronyms used in this Form 10-K are defined below:
Term or AcronymDefinition
  
the 2010 PlanDuke Energy’s 2010 Long-Term Incentive Plan
the 2012 Edwardsport settlementSettlement agreement in 2012 among Duke Energy Indiana, the Office of Utility Consumer Counselor, the Duke Energy Indiana Industrial Group and Nucor Steel-Indiana
the 2012 SettlementSettlement agreement in 2012 among Duke Energy Florida, the Florida OPC and other customer advocates
  
the 2013 SettlementSettlement agreement in 2013 among Duke Energy Florida, the Florida OPC and other customer advocates
  
2013 Agreement2013 revised and restated stipulation and settlement agreement
the 2015 PlanDuke Energy Corporation 2015 Long-Term Incentive Plan
ACPAtlantic Coast Pipeline, LLC, a limited liability company owned by Dominion, Duke Energy and Southern Company Gas
ACP PipelineThe approximately 600-mile proposed interstate natural gas pipeline
  
AFUDCAllowance for Funds Used During Constructionfunds used during construction
  
AHFSAssets held for sale
  
ALJAdministrative Law Judge
  
ANEELAmended ComplaintBrazilian electricity regulatory agencyAmended Verified Consolidated Shareholder Derivative Complaint
AMIAdvanced Metering Infrastructure
  
AOCIAccumulated Other Comprehensive Income (Loss)
AROAsset Retirement Obligation
ARPAlternative Revenue Programs
the ASRAccelerated Stock Repurchase Program
  
ASRPAccelerated natural gas service line replacement program
  
ASUBarclaysAccounting standard updateBarclays Capital Inc.
BCWFBenton County Wind Farm, LLC
BeckjordBeckjord Generating Station
BisonBison Insurance Company Limited
  
Board of DirectorsDuke Energy Board of Directors
  
BisonBresalier ComplaintBison Insurance Company LimitedShareholder derivative lawsuit filed by Saul Bresalier related to ash basin management practices
Bresalier DefendantsSeveral current and former Duke Energy officers and directors named in the Bresalier Complaint
Bridge Facility$4.9 billion senior secured financing facility with Barclays Capital Inc.
  
BrunswickBrunswick Nuclear Plant
  
CAAClean Air Act
  
CAIRCalpineClean Air Interstate RuleCalpine Corporation
  
CalpineCardinalCalpine CorporationCardinal Pipeline Company, LLC
  
CatawbaCatawba Nuclear Station
Catawba RiverkeeperCatawba Riverkeeper Foundation, Inc.
  
CCCombined Cycle
  
CCRCoal Combustion Residuals
  
CCSCarbon Capture and Storage
  
CECPCNCertificate of Environmental Compatibility and Public Convenience and Necessity
  
CEOChief Executive Officer
  
CinergyCinergy Corp. (collectively with its subsidiaries)
  
CO2
Carbon Dioxide
  


Coal Ash ActNorth Carolina Coal Ash Management Act of 2014
  
Coal Ash CommissionCoal Ash Management Commission
  
COLCombined Construction and Operating License
  
the CompanyDuke Energy Corporation and its subsidiaries
  
Consolidated ComplaintCorrected Verified Consolidated Shareholder Derivative Complaint
  
ConstitutionConstitution Pipeline Company, LLC
CPCNCertificate of Public Convenience and Necessity
  
CPPClean Power Plan
  
CRCCinergy Receivables Company LLC
CrescentCrescent Resources LLC
  
Crystal River Unit 3Crystal River Unit 3 Nuclear Plant
  
CSAComprehensive Site Assessment
  
CSAPRCross-State Air Pollution Rule
  
CTCombustion Turbine
  





CTGChina Three Gorges Energy S.à.r.l.
CWAClean Water Act
DATCDuke-American Transmission Co.
  
D.C. Circuit CourtU.S. Court of Appeals for the District of Columbia
the DealersGoldman, Sachs & Co. and JP Morgan Chase Bank
  
DEBSDuke Energy Business Services, LLC
  
DECAMDuke Energy Commercial Asset Management, LLC
  
DECSDEFPFDuke Energy Corporate ServicesFlorida Project Finance, LLC
  
DEFRDuke Energy Florida Receivables, LLC
DEGSDuke Energy Generation Services, Inc.
DEIGPDuke Energy International Geracao Paranapenema S.A.
  
DeloitteDeloitte & Touche LLP, and the member firms of Deloitte Touche Tohmatsu and their respective affiliates
  
DEPRDuke Energy Progress Receivables, LLC
  
DERFDuke Energy Receivables Finance Company, LLC
  
Disposal GroupDETMDuke Energy Ohio’s nonregulated Midwest generation businessTrading and Duke Energy Retail Sales,Marketing, LLC
DHHSNorth Carolina Department of Health and Human Services
  
DOEU.S. Department of Energy
DOJDepartment of Justice
  
DominionDominion Resources
  
DSMDemand Side Management
  
DthDekatherm
Duke EnergyDuke Energy Corporation (collectively with its subsidiaries)
Duke Energy Audit CommitteeAudit Committee of the Board of Directors
  
Duke Energy CarolinasDuke Energy Carolinas, LLC
  
Duke Energy DefendantsSeveral current and former Duke Energy officers and directors named as defendants in the Consolidated Complaint
  
Duke Energy FloridaDuke Energy Florida, LLC (formerly Duke Energy Florida, Inc.)
  
Duke Energy IndianaDuke Energy Indiana, Inc. (subsequently Duke Energy Indiana, LLC)LLC
  
Duke Energy KentuckyDuke Energy Kentucky, Inc.
  
Duke Energy OhioDuke Energy Ohio, Inc.
  
Duke Energy ProgressDuke Energy Progress, LLC (formerly Duke Energy Progress, Inc.)
  


Duke Energy RegistrantsDuke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, and Duke Energy Indiana
Duke Energy RetailDuke Energy Retail Sales, LLC
DukeNetDukeNet Communications Holdings, LLC and Piedmont
  
DynegyDynegy Inc.
East BendEast Bend Generating Station
  
EEEnergy efficiency
  
EGUElectric Generating Units
  
EIPEISProgress Energy’s Equity Incentive PlanEnvironmental Impact Statement
  
ELGEffluent LimitationLimitations Guidelines
EMCNorth Carolina Environmental Management Commission
  
EPAU.S. Environmental Protection Agency
  
EPCEngineering, Procurement and Construction agreement
  
EPSEarnings Per Share
  
ESP2014 Electric Security Plan
  
ETREffective tax rate
  
Exchange ActExchange Act of 1934
  
FASBFinancial Accounting Standards Board
  
FERCFederal Energy Regulatory Commission
  
FitchFitch Ratings, Inc.
  





FirstEnergyFirstEnergy Corp.
FMJOFlorida OPCFlorida Municipal Joint Owners - cityOffice of Ocala, Orlando Utilities Commission, city of Gainesville, city of Leesburg, Kissimmee Utility Authority, Utilities Commission of City of New Smyrna Beach, city of Alachua and city of BushnellPublic Counsel
  
Form S-3Registration statement
  
FPSCFP&LFlorida Public Service CommissionPower & Light Company
  
FTCFPSCFederal TradeFlorida Public Service Commission
  
FTRFinancial transmission rights
  
GAAPGenerally Accepted Accounting Principles in the United States
Gas SettlementSettlement agreement in 2013 among Duke Energy Ohio, PUCO Staff and intervening parties
  
GHGGreenhouse Gas
  
GPCGeorgia Power Company
  
GWhGigawatt-hours
  
HarrisShearon Harris Nuclear Plant
  
HB 998North Carolina House Bill 998, or the North Carolina Tax Simplification and Rate Reduction Act
  
HinesHines Energy Complex
  
IAPI SquaredState Environmental Agency of Parana
IBAMABrazil Institute of EnvironmentISQ Enerlam Aggregator, L.P. and Renewable Natural ResourcesEnerlam Holding Ltd.
  
IBNRIncurred but not yet reported
  
ICICPAInternal combustionInter-company Power Agreement
  
IGCCIntegrated Gasification Combined Cycle
IGCC RiderTracking mechanism used to recover costs related to the Edwardsport IGCC plant from retail electric customers
IGCC Settlement2015 Settlement to resolve disputes with intervenors related to 5 IGCC riders
IMRIntegrity Management Rider
  
Interim FERC MitigationInterim firm power sale agreements mitigation plans related to the Progress Energy merger
  
International Disposal GroupDuke Energy's international business, excluding National Methanol Company
IRPIntegrated Resource Plans
  
IRSInternal Revenue Service
  


ISFSIIndependent Spent Fuel Storage Installation
  
ISOIndependent System Operator
  
ITCInvestment Tax Credit
  
IURCIndiana Utility Regulatory Commission
  
Investment TrustsGrantor trusts of Duke Energy Progress, Duke Energy Florida and Duke Energy Indiana
  
JDAJoint Dispatch Agreement
  
Joint IntervenorsKO TransmissionIntervenors in matters related to the Edwardsport IGCC Plan, including the Citizens Action Coalition of Indiana, Inc., Sierra Club, Inc., Save the Valley, Inc. and Valley Watch, Inc.KO Transmission Company
  
KPSCKentucky Public Service Commission
  
kVKilovolt
  
kWhKilowatt-hour
  
Lee Nuclear StationLDCWilliam States Lee III Nuclear Station
LevyDuke Energy Florida’s proposed nuclear plant in Levy County, FloridaLocal Distribution Company
  
Legacy Duke Energy DirectorsMembers of the pre-merger Duke Energy Board of Directors
LevyDuke Energy Florida’s proposed nuclear plant in Levy County, Florida
  
LIBORLondon Interbank Offered Rate
  
Long-Term FERC MitigationThe revised market power mitigation plan related to the Progress Energy merger
  
MATSMercury and Air Toxics Standards (previously referred to as the Utility MACT Rule)
  
McfThousand cubic feet
  
McGuireMcGuire Nuclear Station
  
Merger Chancery LitigationFour shareholder derivative lawsuits filed in the Delaware Chancery Court related to the Progress Energy merger
Mesirov ComplaintShareholder derivative complaint file by Judy Mesirov
MGPManufactured gas plant
Midwest Generation Disposal GroupDuke Energy Ohio’s nonregulated Midwest generation business and Duke Energy Retail Sales, LLC
  
MISOMidcontinent Independent System Operator, Inc.
  
MMBtuMillion British Thermal Unit





MPPMoney Purchase Pension
  
Moody’sMoody’s Investors Service, Inc.
  
MTBEMethyl tertiary butyl ether
  
MTEPMISO Transmission Expansion Planning
  
MWMegawatt
  
MVPMulti Value Projects
  
MWhMegawatt-hour
NASDAQNasdaq Composite
  
NCDEQNorth Carolina Department of Environmental Quality (formerly the North Carolina Department of Environment and Natural Resources)
  
NCEMCNorth Carolina Electric Membership Corporation
  
NCEMPANorth Carolina Eastern Municipal Power Agency
  
NCRCFlorida’s Nuclear Cost Recovery Clause
  
NCSCNCRSNorth Carolina Supreme CourtNuclear Power Plant Cost Recovery Statutes
  
NCUCNorth Carolina Utilities Commission
  
NC WARNN.C. Waste Awareness and Reduction Network
  
NDTFNuclear decommissioning trust funds
  


NEILNuclear Electric Insurance Limited
NYSDECNew York State Department of Environmental Conservation
  
NMCNational Methanol Company
  
NOLNet operating loss
  
NOVNotice of violation
  
NOx
Nitrogen oxide
  
NPNSNormal purchase/normal sale
  
NRCU.S. Nuclear Regulatory Commission
  
NSRNew Source Review
NWPANuclear Waste Policy Act of 1982
NYAGNew York Attorney General
  
NYSENew York Stock Exchange
  
OconeeOconee Nuclear Station
  
Ohio EPAOPEBOhio Environmental Protection Agency
OPCFlorida Office of Public CounselOther Post-Retirement Benefit Obligations
  
OPEB AssetsOther Post-Retirement Benefit Obligationspost-retirement plan assets are comprised of the Retirement Plan of Piedmont 401(h) Medical Plan, and the following Voluntary Employees' Beneficiary Association Trusts: Duke Energy Corporation Employee Benefits Trust, Piedmont Natural Gas Company 501(c)(9) Trust for Retired Bargaining Unit Employees and the Piedmont Natural Gas Company 501(c)(9) Trust for Retired Non-Bargaining Unit Employees.
ORSOffice of Regulatory Staff
  
Osprey Plant acquisitionDuke Energy Florida's proposed acquisitionpurchase of a Calpine Corporation's 599 MW combined-cycle natural gas plant in Auburndale, Florida
  
OUCCOTTIOffice of Utility Consumer CounselorOther-than-temporary impairment
  
OVECOhio Valley Electric Corporation
  
the ParentDuke Energy Corporation Holding Company
  
PESCthe PaymentsProgressFines and restitution related to the North Carolina Ash Basin Grand Jury Investigation
PGAPurchased Gas Adjustments
Phase I CCR Compliance ProjectsDuke Energy ServiceIndiana's federally mandated compliance projects to comply with the EPA's CCR rule
PiedmontPiedmont Natural Gas Company, Inc.
Piedmont Pension AssetsQualified pension plan assets associated with the Retirement Plan of Piedmont
PioneerPioneer Transmission, LLC
  
PJMPJM Interconnection, LLC
  
Plea AgreementsPPAPlea Agreements entered into by Duke Energy Carolinas and Duke Energy Progress in connection with a criminal investigation related to the Dan River ash basin release and the management of coal ash basins in North CarolinaPurchase Power Agreement
  
Progress EnergyProgress Energy, Inc.
  
PSCSCPublic Service Commission of South Carolina
  
Public StaffPTCNorth Carolina Utilities Commission Public StaffProduction Tax Credits
  
PUCOPublic Utilities Commission of Ohio
  
PUCO OrderOrder issued by PUCO approving a settlement of Duke Energy Ohio’s natural gas base rate case and authorizing the recovery of certain MGP costs
PURPAPublic Utility Regulatory Policies Act of 1978
  





QFQualifying Facility
  
RCARevolving Credit Agreement
  
RCRAResource Conservation and Recovery Act
  
RFPRequests for Proposal
Relative TSRTSR of Duke Energy stock relative to a pre-defined peer group
  


the ResolutionsProposed resolutions promulgated by the Brazilian electricity regulatory agency
RobinsonRobinson Nuclear StationPlant
  
RTORegional Transmission Organization
  
Sabal TrailSabal Trail Transmission, LLC
Sabal Trail PipelineSabal Trail Natural Gas Pipeline
SACESouthern Alliance of Clean Energy
  
SAFSTORA method of decommissioning in which a nuclear facility is placed and maintained in a condition that allows the facility to be safely stored and subsequently decontaminated to levels that permit release for unrestricted use.
S.C. Court of AppealsCourt of Appeals of South Carolina
SCCLSouth Carolina Coastal Conservation League
  
SCDHECSouth Carolina Department of Health and Environmental Control
  
SECSecurities and Exchange Commission
  
SELCSouthern Environmental Law Center
  
Segment IncomeIncome from continuing operations net of income attributable to noncontrolling interests
  
SO2
Sulfur dioxide
  
Spectra EnergySpectra Energy Corp.
Spectra CapitalSpectra Energy Capital, LLC (formerly Duke Capital LLC)
  
S&PStandard & Poor’s Rating Services
  
SSOStandard Service Offer
  
State Utility CommissionsNCUC, PSCSC, FPSC, PUCO, IURC, KPSC and TRA (Collectively)
State Electric Utility CommissionsNCUC, PSCSC, FPSC, PCO, IURC and KPSC (Collectively)
State Gas Utility CommissionsNCUC, PSCSC, PUCO, TRA and KPSC (Collectively)
  
Subsidiary RegistrantsDuke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, and Duke Energy Indiana
Supreme CourtU.S. Supreme Court and Piedmont
  
SuttonL.V. Sutton combined cycle facility
  
Suwannee projectT&D RiderProposed 320 MW combustion turbine plant at Tracking mechanism to recover grid infrastructure improvement costs in Indiana
Term LoanDuke Energy Florida's Suwannee generating(Parent) $1.5 billion term loan facility, as amended maturing on July 31, 2017
TRATennessee Regulatory Authority
  
TSRTotal shareholder return
  
Uprate ProjectHines Chiller Uprate Project
U.S.United States
U.S. Court of AppealsU.S. Court of Appeals for the Second Circuit
  
USDOJUnited States Department of Justice Environmental Crimes Section and the United States Attorneys for the Eastern District of North Carolina, the Middle District of North Carolina and the Western District of North Carolina, collectively
  
VDEQVirginia Department of Environmental Quality
VEBA IDuke Energy Corporation Employee Benefits Trust
VermillionVermillion Generating Station
VIEVariable Interest Entity
  
WACCWeighted Average Cost of Capital
  
WVPAWabash Valley Power Association, Inc.



PART I

 
ITEM 1. BUSINESS
 
DUKE ENERGY
 
General
Duke Energy Corporation (collectively with its subsidiaries, Duke Energy) is an energy company headquartered in Charlotte, North Carolina, subject to regulation by the Federal Energy Regulatory Commission (FERC). Duke Energy operates in the United States (U.S.) and Latin America primarily through its direct and indirect subsidiaries. Certain Duke Energy'sEnergy subsidiaries include itsare also subsidiary registrants, (collectively referred to as the Subsidiary Registrants);including Duke Energy Carolinas, LLC (Duke Energy Carolinas); Progress Energy, Inc. (Progress Energy); Duke Energy Progress, LLC (formerly Duke Energy Progress, Inc.) (Duke Energy Progress); Duke Energy Florida, LLC (formerly Duke Energy Florida, Inc.) (Duke Energy Florida); Duke Energy Ohio, Inc. (Duke Energy Ohio); and Duke Energy Indiana, LLC (formerly Duke Energy Indiana, Inc.) (Duke Energy Indiana). On October 3, 2016, Duke Energy acquired Piedmont Natural Gas Company, Inc. (Piedmont) which also became a wholly owned subsidiary and subsidiary registrant of Duke Energy. Duke Energy's consolidated financial statements include Piedmont's results of operations and cash flow activity subsequent to the acquisition. See Note 2 for additional information regarding the acquisition. When discussing Duke Energy’s consolidated financial information, it necessarily includes the results of its seven separate subsidiary registrants (collectively referred to as the Subsidiary Registrants,Registrants), which along with Duke Energy, are collectively referred to as the Duke Energy Registrants.Registrants (Duke Energy Registrants).
Duke Energy has entered into an Agreement and Plan of Merger (Merger Agreement) with Piedmont, Natural Gas Company, Inc. (Piedmont), a North Carolina corporation. Piedmontcorporation, is an energy services company primarily engaged inwhose principal business is the distribution of natural gas to over one million residential, commercial, industrial and power generation customers in portions of North Carolina, South Carolina and Tennessee. Under termsTennessee, including customers served by municipalities who are Piedmont's sales for resale customers. In October 2016, Duke Energy completed the acquisition of Piedmont for a total cash purchase price of $5.0 billion and assumed Piedmont's existing long-term debt, which had an estimated fair value of approximately $2.0 billion at the time of the Merger Agreement,acquisition. The acquisition provides a foundation for Duke Energy will acquire Piedmont for $4.9 billionto establish a broader, long-term strategic natural gas infrastructure platform to supplement and complement its existing natural gas pipeline investments and regulated natural gas business in cash and Piedmont will become a wholly owned subsidiary of Duke Energy. Piedmont's common stock will be delisted from the New York Stock Exchange (NYSE). Duke Energy and Piedmont target to close the transaction by the end of 2016 subject to meeting various conditions, including receipt of required regulatory approvals.Midwest. For additional information on the details of this transaction, including preliminary purchase price allocation and acquisition financing, see Item 7, Management's Discussion and Analysis of Financial Condition and Results of Operations (MD&A) and Note 2 to the Consolidated Financial Statements, "Acquisitions and Dispositions."
In December 2016, Duke Energy completed the sale of the nonregulated Midwest generation business and Duke Energy Retail Sales, LLC (collectively, the Disposal Group)its Latin American businesses to Dynegy Inc. (Dynegy)focus on April 2, 2015, for approximately $2.8 billion in cash. The Disposal Group primarily included Duke Energy Ohio's coal-fired and gas-fired generation assets located in the Midwest region of the United States and dispatched into the PJM wholesale market. The Disposal Group also included a retail sales subsidiary of Duke Energy, that served retailits domestic regulated electric and gas customersbusinesses, which was further bolstered by the acquisition of Piedmont. The sale of the International Energy businesses, excluding an equity method investment in Ohio with energyNational Methanol Company (NMC), was completed through two transactions including the sale of Duke Energy's Brazilian business to China Three Gorges and other energy services at competitive rates. For additional information seeDuke Energy's remaining Central and South American businesses to I Squared Capital (collectively, the International Disposal Group). See Note 2 to the Consolidated Financial Statements, "Acquisitions and Dispositions.Dispositions," for additional information.
The Duke Energy Registrants electronically file reports with the Securities and Exchange Commission (SEC), including annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, proxies and amendments to such reports.
The public may read and copy any materials the Duke Energy Registrants file with the SEC at the SEC’s Public Reference Room at 100 F Street, NE, Washington, DC 20549. The public may obtain information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. The SEC also maintains an Internetinternet site that contains reports, proxy and information statements and other information regarding issuers that file electronically with the SEC at http://www.sec.gov. Additionally, information about the Duke Energy Registrants, including reports filed with the SEC, is available through Duke Energy’s website at http://www.duke-energy.com. Such reports are accessible at no charge and are made available as soon as reasonably practicable after such material is filed with or furnished to the SEC.
Business Segments
Duke Energy conducts its operationsThe acquisition of Piedmont and sale of the International Disposal Group has resulted in a realigned business with three business segments; Regulatedreportable operating segments (business segments); Electric Utilities International Energyand Infrastructure, Gas Utilities and Infrastructure and Commercial Portfolio (formerly Commercial Power).Renewables. The remainder of Duke Energy’s operations areis presented as Other. Duke Energy’sEnergy's chief operating decision maker regularlyroutinely reviews financial information about each of these business segments in deciding how to allocate resources and evaluate the performance of the business. For additional information on each of these business segments, including financial and geographic information, see Note 3 to the Consolidated Financial Statements, “Business Segments.”
The following sections describe the business and operations of each of Duke Energy’s reportable business segments, as well as Other.
REGULATED
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PART I

ELECTRIC UTILITIES AND INFRASTRUCTURE
RegulatedElectric Utilities and Infrastructure conducts operations primarily through the regulated public utilities of Duke Energy Carolinas, Duke Energy Progress, Duke Energy Florida, Duke Energy Indiana and Duke Energy Ohio. TheseElectric Utilities and Infrastructure provides retail electric service through the generation, transmission, distribution and gassale of electricity to approximately 7.5 million customers within the Southeast and Midwest regions of the U.S. The service territory is approximately 95,000 square miles across six states with a total estimated population of 24 million people. The operations include electricity sold wholesale to municipalities, electric cooperative utilities and other load-serving entities. Electric Utilities and Infrastructure is also a joint owner in certain electric transmission projects. Electric Utilities and Infrastructure has a 50 percent ownership interest in Duke-American Transmission Co. (DATC), a partnership with American Transmission Company, formed to design, build and operate transmission infrastructure. DATC owns 72 percent of the transmission service rights to Path 15, an 84-mile transmission line in central California. Electric Utilities and Infrastructure also has a 50 percent ownership interest in Pioneer Transmission, LLC, which builds, owns and operates electric transmission facilities in North America.
The electric operations and investments in projects are subject to the rules and regulations of the FERC, the North Carolina Utilities Commission (NCUC), the Public Service Commission of South Carolina (PSCSC), the Florida Public Service Commission (FPSC), the Indiana Utility Regulatory Commission (IURC), the Public Utilities Commission of Ohio (PUCO), and the Kentucky Public Service Commission (KPSC).
Regulated Utilities serves 7.4 million retail electric customers in six states in the Southeast and Midwest regions of the U.S. Its service area covers approximately 95,000 square miles with an estimated population of 24 million people. Regulated Utilities serves 525,000 retail natural gas customers in southwestern Ohio and northern Kentucky. Electricity is also sold wholesale to incorporated municipalities, electric cooperative utilities and other load-serving entities.

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PART I

The following table represents the distribution of billed sales by customer class for the year ended December 31, 2015.2016.
Duke
Duke
 Duke
 Duke
 Duke
Duke
Duke
 Duke
 Duke
 Duke
Energy
Energy
 Energy
 Energy
 Energy
Energy
Energy
 Energy
 Energy
 Energy
Carolinas(a)

Progress(a)

 
Florida(b)

 
Ohio(c)

 
Indiana(d)

Carolinas(a)

Progress(a)

 
Florida(b)

 
Ohio(c)

 
Indiana(d)

Residential32%28% 50% 34% 27%32%26% 50% 35% 26%
General service33%24% 38% 37% 25%33%23% 38% 38% 24%
Industrial25%16% 8% 24% 31%25%15% 8% 24% 31%
Total retail sales90%68% 96% 95% 83%90%64% 96% 97% 81%
Wholesale and other sales10%32% 4% 5% 17%10%36% 4% 3% 19%
Total sales100%100% 100% 100% 100%100%100% 100% 100% 100%
(a)Primary general service sectors include health care, education, financial services, information technology and military buildings. Primary industrial sectors include textiles, chemicals, rubber and plastics, paper, food and beverage and auto manufacturing.
(b)Primary general service sectors include tourism, health care and government facilities and schools. Primary industrial sectors include phosphate rock mining and processing and citrus and other food processing.
(c)Primary general service sectors include health care, education, real estate and rental leasing, financial and insurance services, water/wastewater services and wholesale trade services. Primary industrial sectors include primary metals, chemicals, food and beverage and transportation.
(d)Primary general service sectors include retail, financial, health care and education services. Primary industrial sectors include metals, transportation, building materials, food and beverage and chemicals.
The number of residential and general service and industrial customers within the RegulatedElectric Utilities and Infrastructure service territory is expected to increase over time. However,While economic conditions within the service territory continue to improve, sales growth in the near term has been hampered by current economic conditions and continued adoption of energy efficiencies. Averageefficiencies and self-generation. The continued adoption of more efficient housing and appliances is expected to have a negative impact on average usage per residential customer is expected to remain flat or decline for the foreseeable future.over time. While total industrial and general serviceresidential sales increased in 2015 when2016 compared to 2014,2015, the growth rate was modest when compared to historical periods.
Seasonality and the Impact of Weather
Regulated Utilities’Revenues and costs and revenues are influenced by seasonal weather patterns. Peak sales of electricity occur during the summer and winter months resultingwhich results in higher revenue and cash flows induring these periods. By contrast, lower sales of electricity occur during the spring and fall, allowing for scheduled plant maintenance. Peak gas sales occur during the winter months. Residential and general service customers are mostmore impacted by weather.weather than industrial customers. Estimated weather impacts are based on actual current period weather compared to normal weather conditions. Normal weather conditions are defined as the long-term average of actual historical weather conditions.
The estimated impact of weather on earnings is based on the temperature variances from a normal condition and customers’ historic usage levels and patterns. The methodology used to estimate the impact of weather does not consider all variables that may impact customer response to weather conditions such as humidity in the summer or wind chill in the winter. The precision of this estimate may also be impacted by applying long-term weather trends to shorter-term periods.
Degree-day data are used to estimate energy required to maintain comfortable indoor temperatures based on each day’s average temperature. Heating-degree days measure the variation in weather based on the extent the average daily temperature falls below a base temperature. Cooling-degree days measure the variation in weather based on the extent the average daily temperature rises above the base temperature. Each degree of temperature below the base temperature counts as one heating-degree day and each degree of temperature above the base temperature counts as one cooling-degree day.

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PART I

Competition
Retail
Regulated Utilities’Electric Utilities and Infrastructure’s businesses operate as the sole supplier of electricity within their service territories, with the exception of Ohio, which has a competitive electricity supply market for generation service. RegulatedElectric Utilities and Infrastructure owns and operates facilities necessary to transmit and distribute electricity and, except in Ohio, to generate electricity. Services are priced by state commission approved rates designed to include the costs of providing these services and a reasonable return on invested capital. This regulatory policy is intended to provide safe and reliable electricity at fair prices.
Competition in the regulated electric distribution business is primarily from the development and deployment of alternative energy sources including on-site generation from industrial customers and distributed generation, such as rooftopprivate solar, at residential, general service and/or industrial customer sites.
Regulated UtilitiesDuke Energy is not aware of any proposed legislation inwithin any of its jurisdictions that would give itsprovide retail customers the right to choose their electricity provider or otherwise restructure or deregulate the electric industry, including broadly subsidizing distributed generation such as rooftopprivate solar.
Although there is no pending legislation at this time, if the retail jurisdictions served by RegulatedElectric Utilities and Infrastructure become subject to deregulation, the recovery of stranded costs could become a significant consideration. Stranded costs primarily include the generation assets of RegulatedElectric Utilities and Infrastructure whose value in a competitive marketplace may be less than their current book value, as well as above-market purchased power commitments from qualifying facilities (QFs). The Public Utility Regulatory Policies Act of 1978 (PURPA) established a new class of generating facilities as QFs, typically small power production facilities that generate power within a utility company’s service territory for which the utility companies are legally obligated to purchase the energy at an avoided cost rate. Thus far, all states that have passed restructuring legislation have provided for the opportunity to recover a substantial portion of stranded costs.

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PART I

Regulated Utilities’Electric Utilities and Infrastructure’s largest stranded cost exposure is primarily related to Duke Energy Florida’s purchased power commitments with QFs, under which it has future minimum expected capacity payments through 2043 of $3.1$2.8 billion. Duke Energy Florida was obligated to enter into these contracts under provisions of PURPA. Duke Energy Florida continues to seek ways to address the impact of escalating payments under these contracts. However, the FPSC allows full recovery of the retail portion of the cost of power purchased from QFs. For additional information related to these purchased power commitments, see Note 5 to the Consolidated Financial Statements, “Commitments and Contingencies.”
In Ohio, RegulatedElectric Utilities and Infrastructure conducts competitive auctions for electricity supply and purchases the gas commodity for natural gas service.supply. The cost of energy purchased through these auctions and the cost of gas purchases areis recovered from retail customers. RegulatedElectric Utilities earns retail margin in Ohio on the transmission and distribution of electricity and the distribution of gas and not on the cost of the underlying energy.
Wholesale
Regulated UtilitiesDuke Energy competes with other utilities and merchant generators for bulk power sales, sales to municipalities and cooperatives and wholesale transactions.transactions under primarily cost-based contracts approved by FERC. The principal factors in competing for these sales are price, availability of capacity and power and reliability of service. Prices are influenced primarily by market conditions and fuel costs.
Increased competition in the wholesale electric utility industry and the availability of transmission access could affect Regulated Utilities’Electric Utilities and Infrastructure’s load forecasts, plans for power supply and wholesale energy sales and related revenues. Wholesale energy sales will be impacted by the extent to which additional generation is available to sell to the wholesale market and the ability of RegulatedElectric Utilities and Infrastructure to attract new customers and to retain existing customers.
Energy Capacity and Resources
RegulatedElectric Utilities and Infrastructure owns approximately 50,00049,300 megawatts (MW) of generation capacity. For additional information on Regulated Utilities’owned generation facilities, see Item 2, “Properties.”

Energy and capacity are also supplied through contracts with other generators and purchased on the open market. Factors that could cause RegulatedElectric Utilities and Infrastructure to purchase power for its customers include generating plant outages, extreme weather conditions, generation reliability, demand growth and price. RegulatedElectric Utilities and Infrastructure has interconnections and arrangements with its neighboring utilities to facilitate planning, emergency assistance, sale and purchase of capacity and energy and reliability of power supply.
Regulated Utilities’Electric Utilities and Infrastructure’s generation portfolio is a balanced mix of energy resources having different operating characteristics and fuel sources designed to provide energy at the lowest possible cost to meet its obligation to serve retail customers. All options, including owned generation resources and purchased power opportunities, are continually evaluated on a real-time basis to select and dispatch the lowest-cost resources available to meet system load requirements.
Potential Plant Retirements
The Subsidiary Registrants periodically file Integrated Resource Plans (IRP) with state regulatory commissions. The IRPs provide a view of forecasted energy needs over a long term (10 to 20 years) and options being considered to meet those needs. Recent IRPs filed by the Subsidiary Registrants included planning assumptions to potentially retire certain coal-fired generating facilities earlier than their current estimated useful lives. Theselives, primarily because these facilities do not have the requisite emission control equipment primarily to meet United States Environmental Protection Agency (EPA) regulations recently approved or proposed. Duke Energy continues to evaluate the potential need to retire these coal-fired generating facilities earlier than the current estimated useful lives and plans to seek regulatory recovery for amounts that would not be otherwise recovered when any of these assets are retired. For additional information related to potential plant retirements see Note 4 to the Consolidated Financial Statements, “Regulatory Matters.”

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PART I

On October 23, 2015, the EPA published in the Federal Register the final Clean Power Plan (CPP) rule for regulatingthat regulates carbon dioxide (CO2) emissions from existing fossil fuel-fired electric generating units (EGUs). The CPP establishes CO2 emission rates and mass cap goals that apply to existing fossil fuel-fired generation. UnderEGUs. Petitions challenging the CPP, states are required to develop and submit a final compliance plan, or an initial plan with an extension request, to the EPA by September 2016, or no later than September 2018 with an approved extension. These state plans are subject to EPA approval, with a federal plan applied to states that fail to submit a plan to the EPA or if a state plan is not approved. Legal challenges to the CPPrule have been filed by stakeholders and motions toseveral groups. On February 9, 2016, the Supreme Court issued a stay the requirements of the final CPP rule, pending the outcomehalting implementation of the litigation have been filed. The U.S. Supreme Court granted a Motion to Stay in February 2016, effectively blocking enforcement of the ruleCPP until legal challenges are resolved. Final resolutionStates in which the Duke Energy Registrants operate have suspended work on CPP compliance plans as a result of these legal challenges could take several years. the stay. Oral arguments before 10 of the 11 judges on D.C. Circuit Court were heard on September 27, 2016. The court is expected to decide the case in early 2017.
Compliance with CPP could cause the industry to replace coalcoal-fired generation with natural gas and renewables, especially in states that have significant CO2 reduction targets under the rule.renewables. Costs to operate coal-fired generation plants continue to grow due to increasing environmental compliance requirements, including ash management costs unrelated to CPP, and thiswhich may result in the retirement of coal-fired generation plants earlier than the current end of useful lives. If the CPP is ultimately upheld by the courts and implementation goes forward, the Duke Energy continuesRegistrants could incur increased fuel, purchased power, operation and maintenance and other costs for replacement generation as a result of this rule. Due to evaluate the needuncertainties related to retire generating facilities and plans to seek regulatory recovery, where appropriate, for amounts that have not been recovered upon asset retirements. However, recovery is subject to future regulatory approval, including the recoveryimplementation of carrying costs on remaining book values, and thereforethe CPP, the Duke Energy Registrants cannot be assured.predict the outcome of these matters.

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PART I

Sources of Electricity
RegulatedElectric Utilities and Infrastructure relies principally on coal, nuclear fuel and natural gas and nuclear fuel for its generation of electricity. The following table lists sources of electricity and fuel costs for the three years ended December 31, 2015.2016.
  Cost of Delivered Fuel per Net  Cost of Delivered Fuel per Net
Generation by Source(d)
 
Kilowatt-hour Generated (Cents)(d)
Generation by Source Kilowatt-hour Generated (Cents)
2015
 
2014(e)

 
2013(e)

 2015
 2014
 2013
2016
 2015
 2014
 2016
 2015
 2014
Coal(a)
29.0% 33.5% 32.8% 3.24
 3.54
 3.67
27.1% 29.0% 33.5% 3.07
 3.24
 3.54
Nuclear(a)
27.0% 26.1% 26.3% 0.65
 0.65
 0.66
27.4% 27.0% 26.1% 0.66
 0.65
 0.65
Gas and oil(a)
23.1% 19.0% 19.5% 3.74
 4.70
 4.18
Natural gas and oil(a)
22.9% 23.1% 19.0% 3.07
 3.74
 4.70
All fuels (cost-based on weighted average)(a)
79.1% 78.6% 78.6% 2.50
 2.86
 2.79
77.4% 79.1% 78.6% 2.22
 2.50
 2.86
Hydroelectric and solar(b)
0.8% 0.8% 1.3%      0.7% 0.8% 0.8%      
Total generation79.9% 79.4% 79.9%      78.1% 79.9% 79.4%      
Purchased power and net interchange(c)
20.1% 20.6% 20.1%      21.9% 20.1% 20.6%      
Total sources of energy100.0% 100.0% 100.0%      100.0% 100.0% 100.0%      
(a)Statistics related to all fuels reflect Regulated Utilities'Electric Utilities and Infrastructure's ownership interest in jointly owned generation facilities.
(b)Generating figures are net of output required to replenish pumped storage facilities during off-peak periods. 
(c)Purchased power includes renewable energy purchases. 
(d)Includes the effect of the Joint Dispatch Agreement (JDA). 
(e)Amounts for 2014 and 2013 have been adjusted to reflect the inclusion of Duke Energy Ohio auction purchases from PJM and Purchased power and net interchange.
Coal
RegulatedElectric Utilities and Infrastructure meets its coal demand through a portfolio of long-term purchase contracts and short-term spot market purchase agreements. Large amounts of coal are purchased under long-term contracts with mining operators who mine both underground and at the surface. RegulatedElectric Utilities and Infrastructure uses spot market purchases to meet coal requirements not met by long-term contracts. Expiration dates for its long-term contracts, which have various price adjustment provisions and market re-openers, range from 20162017 to 2019 for Duke Energy Carolinas, 2017 to 2019 for Duke Energy Progress, 2017 to 2019 for Duke Energy Florida, 2017 for Duke Energy Carolinas, 2016 to 2018 for Duke Energy Progress, 2016 toOhio and 2017 for Duke Energy Florida, and 2016 to 2025 for Duke Energy Indiana. RegulatedElectric Utilities and Infrastructure expects to renew these contracts or enter into similar contracts with other suppliers as existing contracts expire, though prices will fluctuate over time as coal markets change. Coal purchased for the Carolinas is primarily produced from mines in Central Appalachia, Northern Appalachia and the Illinois Basin. Coal purchased for Florida is primarily produced from mines in Colorado and the Illinois Basin. Coal purchased for Kentucky is delivered by barge and is produced from mines along the Ohio River in Illinois, Ohio, West Virginia and Pennsylvania. Coal purchased for Indiana is primarily produced in Indiana and Illinois. RegulatedElectric Utilities and Infrastructure has an adequate supply of coal under contract to fuelmeet its hedging guidelines regarding projected 2016 operations and a significant portion of supply to fuel its projected 2017 operations.future consumption. As a result of lowervolatility in natural gas prices and lessthe associated impacts on coal-fired dispatch within the generation fleet, coal inventories may periodically exceed production requirementswill continue to fluctuate. Electric Utilities and result in higher inventory levels. In these circumstances, Regulated UtilitiesInfrastructure continues to actively manage its portfolio and has worked with suppliers to defer contracted deliveries, renegotiate existing contract volumes or has received regulatory support to adjust generation dispatch to reduce the inventory levels.obtain increased flexibility in its coal contracts.
The current average sulfur content of coal purchased by RegulatedElectric Utilities and Infrastructure is between 1.5 percent and 2 percent for Duke Energy Carolinas, between 1.5 percent and 2 percent for Duke Energy Progress, between 1 percent and 2.53 percent for Duke Energy Florida, between 3 percent and 3.5 percent for Duke Energy Ohio and between 22.5 percent and 3 percent for Duke Energy Indiana. Regulated Utilities’Electric Utilities and Infrastructure's environmental controls, in combination with the use of sulfur dioxide (SO2) emission allowances, enable RegulatedElectric Utilities and Infrastructure to satisfy current SO2 emission limitations for its existing facilities.
Nuclear
The industrial processes for producing nuclear generating fuel generally involve the mining and milling of uranium ore to produce uranium concentrates, and services to convert, enrich and fabricate fuel assemblies.
Regulated
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PART I

Electric Utilities and Infrastructure has contracted for uranium materials and services to fuel its nuclear reactors. Uranium concentrates, conversion services and enrichment services are primarily met through a diversified portfolio of long-term supply contracts. The contracts are diversified by supplier, country of origin and pricing. RegulatedElectric Utilities and Infrastructure staggers its contracting so that its portfolio of long-term contracts covers the majority of its fuel requirements in the near term and decreasing portions of its fuel requirements over time thereafter. Near-term requirements not met by long-term supply contracts have been and are expected to be fulfilled with spot market purchases. Due to the technical complexities of changing suppliers of fuel fabrication services, RegulatedElectric Utilities and Infrastructure generally sources these services to a single domestic supplier on a plant-by-plant basis using multiyearmulti-year contracts.
RegulatedElectric Utilities and Infrastructure has entered into fuel contracts that cover 100 percent of its uranium concentrates, conversion services and enrichment services requirements through at least 2017 and cover fabrication services requirements for these plants through at least 2019. For future requirements not already covered under long-term contracts, RegulatedElectric Utilities and Infrastructure believes it will be able to renew contracts as they expire, or enter into similar contractual arrangements with other suppliers of nuclear fuel materials and services.

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PART I

Natural Gas and Fuel Oil
Natural gas and fuel oil supply for Regulated Utilities’Electric Utilities and Infrastructure’s generation fleet is purchased under term and spot contractsstandard industry agreements from various suppliers.suppliers, including Piedmont. Natural gas supply agreements typically provide for a percentage of forecasted burns being procured over time, with varied expiration dates. Electric Utilities and Infrastructure believes it has access to an adequate supply of natural gas and fuel oil for the reasonably foreseeable future.
Electric Utilities and Infrastructure has certain dual-fuel generating facilities that can operate utilizing both natural gas and fuel oil. The cost of Electric Utilities and Infrastructure’s natural gas and fuel oil is fixed price or determined by published market prices as reported in certain industry publications, plus any transportation and freight costs. Duke Energy Carolinas, Duke Energy Progress, Duke Energy Florida and Duke Energy Indiana use derivative instruments to limitmanage a portion of their exposure to price fluctuations for natural gas. Regulated
Electric Utilities and Infrastructure has certain dual-fuel generating facilities that can operate with both natural gasfirm interstate and oil. The cost of Regulated Utilities’ natural gas and oil is either at a fixed price or determined by market prices as reported in certain industry publications. Regulated Utilities believes it has access to an adequate supply of gas and oil for the reasonably foreseeable future. Regulated Utilities’intrastate natural gas transportation agreements and storage agreements in place to support generation needed for its gas generation is purchased under long-term firm transportation contracts with interstateload requirements. Electric Utilities and intrastate pipelines. Regulated UtilitiesInfrastructure may also purchase additional shorter-term gas transportation and utilize natural gas interruptible transportation agreements to support generation needed for its load requirements during peak periods.requirements. The RegulatedElectric Utilities and Infrastructure natural gas plants are served by severalvarious supply zones and multiple pipelines.
Purchased Power
RegulatedElectric Utilities and Infrastructure purchases a portion of its capacity and system requirements through purchase obligations, leases and purchase contracts. RegulatedElectric Utilities and Infrastructure believes it can obtain adequate purchased power capacity to meet future system load needs. However, during periods of high demand, the price and availability of purchased power may be significantly affected.
The following table summarizes purchased power the previous three years:
2015
 2014
 2013
2016
 2015
 2014
Purchase obligations and leases (in millions of megawatt-hours (MWh))(a)
14.9
 14.3
 11.7
18
 14.9
 14.3
Purchases capacity under contract (in MW)(b)
4,573
 4,500
 3,800
Purchase capacity under contract (in MW)(b)
4,588
 4,573
 4,500
(a)    Represents approximately 5 percent of total system requirements for all years presented.
(a)Represents approximately 7 percent of total system requirements for 2016 and 6 percent for 2015 and 2014.
(b)    These agreements include approximately 421451 MW of firm capacity under contract by Duke Energy Florida with QFs.
Natural Gas for Retail Distribution
Regulated Utilities is responsible for the purchase and the subsequent delivery of natural gas to retail customers in its Ohio and Kentucky service territories. Regulated Utilities’ natural gas procurement strategy is to buy firm natural gas supplies and firm interstate pipeline transportation capacity during the winter season and during the non-heating season through a combination of firm supply and transportation capacity along with spot supply and interruptible transportation capacity. This strategy allows Regulated Utilities to assure reliable natural gas supply for its non-curtailable customers during peak winter conditions and provides Regulated Utilities the flexibility to reduce its contract commitments if firm customers choose alternate gas. In 2015, firm supply purchase commitment agreements provided approximately 71 percent of the natural gas supply.
Inventory
Generation of electricity is capital intensive. RegulatedElectric Utilities and Infrastructure must maintain an adequate stock of fuel and materials and supplies in order to ensure continuous operation of generating facilities and reliable delivery to customers. As of December 31, 2015,2016, the inventory balance for RegulatedElectric Utilities and Infrastructure was $3,702 million.approximately $3.4 billion. For additional information on inventory see Note 1 to the Consolidated Financial Statements, “Summary of Significant Accounting Policies.”
Ash Basin Management
On September 20, 2014, the North Carolina Coal Ash Management Act of 2014 (Coal Ash Act) became law and was amended on June 24, 2015, by the Mountain Energy Act.and July 14, 2016. The Coal Ash Act, established a Coal Ash Management Commission (Coal Ash Commission) to overseeas amended, regulates the handling of coal ash within the state and requires closure of ash impoundments by no later than December 31, 2029, based on risk rankings, amongstamong other detailed requirements. The Coal Ash Act leaves the decision on cost recovery determinations related to closure of coal combustion residual (CCR)ash surface impoundments (ash basins or impoundments) to the normal ratemaking processes before utility regulatory commissions. Duke Energy has and will periodically submit to applicable authorities required site-specific coal ash impoundment remediation or closure plans. These plans and all associated permits must be approved before any work can begin.
On April 17, 2015, the EPA published Resource Conservation and Recovery Act (RCRA) in the Federal Register establishing rulesa rule to regulate the disposal of coal combustion residuals (CCR) from electric utilities as solid waste. The rule classifies CCR as nonhazardous under Subtitle D of the Resource Conservation and Recovery Act (RCRA). The RCRA and the Coal Ash Act, as amended, finalized the legal framework related to coal ash management practices and ash basin closure.
Duke Energy has advanced the strategy and implementation for the remediation or closure of coal ash basins. In 2015, Duke Energy began activities at certain sites within North Carolina sites specified as high risk by the Coal Ash Act, withincluding moving coal ash moving off-site for use in structural fill or to lined landfills. Additional modifications to operating coal plants are underway to comply with RCRA.
For additional information on the ash basins, see Notes 5 and 9 to the Consolidated Financial Statements, "Commitments and Contingencies" and "Asset Retirement Obligations," respectively.

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PART I

Nuclear Matters
Regulated UtilitiesDuke Energy owns, wholly or partially, 11 operating nuclear reactors located at six stations. The Crystal River Unit 3 Nuclear Plant (Crystal River Unit 3) permanently ceased operation in February 2013. Nuclear insurance includes: nuclear liability coverage; property, decontamination and premature decommissioning coverage; and replacement power expense coverage. Joint owners reimburse Regulated UtilitiesDuke Energy for certain expenses associated with nuclear insurance in accordance with joint owner agreements. The Price-Anderson Act requires plant owners to provide for public nuclear liability claims resulting from nuclear incidents to the maximum total financial protection liability, which currently is $13.5approximately $13.4 billion. For additional information on nuclear insurance see Note 5 to the Consolidated Financial Statements, “Commitments and Contingencies.”

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PART I

Regulated UtilitiesDuke Energy has a significant future financial commitment to dispose of spent nuclear fuel and decommission and decontaminate each plant safely. The NCUC, PSCSC and FPSC require Regulated UtilitiesDuke Energy to update their cost estimates for decommissioning their nuclear plants every five years.
The following table summarizes the fair value of nuclear decommissioning trust fund (NDTF) balances and cost study results for Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida.
NDTF(a)
   
NDTF(a)
   
(in millions)December 31, 2015
 December 31, 2014
 
Decommissioning Costs(a)(b)

 Year of Cost StudyDecember 31, 2016
 December 31, 2015
 
Decommissioning Costs(a)(b)

 Year of Cost Study
Duke Energy$5,825
 $5,546
 $8,130
 2013 and 2014$6,205
 $5,825
 $8,150
 2013 and 2014
Duke Energy Carolinas3,050
 3,042
 3,420
 20133,273
 3,050
 3,420
 2013
Duke Energy Progress2,035
 1,701
 3,550
 20142,217
 2,035
 3,550
 2014
Duke Energy Florida(c)
740
 803
 1,160
 2013715
 740
 1,180
 2013
(a)    Amounts for Progress Energy equal the sum of Duke Energy Progress and Duke Energy Florida.
(b)Amounts include the Subsidiary Registrants' ownership interest in jointly owned reactors. Other joint owners are responsible for decommissioning costs related to their interest in the reactors.
(c)Duke Energy Florida received reimbursements fromform the NDTF for costs related to ongoing decommissioning activity of the Crystal River Unit 3 Nuclear Plant during 2015.2016.
The NCUC, PSCSC.PSCSC, FPSC and FERC have allowed Regulated Utilities’Electric Utilities and Infrastructure to recover estimated decommissioning costs through retail and wholesale rates over the expected remaining service periods of their nuclear stations. RegulatedElectric Utilities and Infrastructure believes the decommissioning costs being recovered through rates, when coupled with the existing fund balance and expected fund earnings, will be sufficient to provide for the cost of future decommissioning. For additional information, see Note 9 to the Consolidated Financial Statements, “Asset Retirement Obligations.”
The Nuclear Waste Policy Act of 1982 (as amended) (NWPA) provides the framework for development by the federal government of interim storage and permanent disposal facilities for high-level radioactive waste materials. The NWPA promotes increased usage of interim storage of spent nuclear fuel at existing nuclear plants. RegulatedElectric Utilities and Infrastructure will continue to maximize the use of spent fuel storage capability within its own facilities for as long as feasible.
Under federal law, the U.S. Department of Energy (DOE) is responsible for the selection and construction of a facility for the permanent disposal of spent nuclear fuel and high-level radioactive waste. Delays have occurred in the DOE’s proposed permanent repository to be located at Yucca Mountain, Nevada. At this time, DOE's focus is on developing consolidated storage for commercial spent nuclear fuel at one or more central sites rather than at a permanent repository.
Until the DOE begins to accept the spent nuclear fuel, Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida will continue to safely manage their spent nuclear fuel. Under current regulatory guidelines, Shearon Harris Nuclear Plant (Harris) has sufficient storage capacity in its spent fuel pools through the expiration of its renewed operating license. Crystal River Unit 3 was retired in 2013 and placed in SAFSTOR prior to final decommissioning. The spent fuel is currently stored in the spent fuel pool and anpool. An independent spent fuel storage installation will be installed to accommodate storage of all the spent nuclear fuel until the DOE accepts the spent nuclear fuel. With certain modifications and approvals by the U.S. Nuclear Regulatory Commission (NRC) to expand the on-site dry cask storage facilities, spent nuclear fuel dry storage facilities will be sufficient to provide storage space of spent fuel through the expiration of the operating licenses, including any license renewals, for the Brunswick Nuclear Plant (Brunswick), Catawba Nuclear Station (Catawba), McGuire Nuclear Station (McGuire), Oconee Nuclear Station (Oconee) and Robinson Nuclear Plant.Plant (Robinson). 
The nuclear power industry faces uncertainties with respect to the cost and long-term availability of disposal sites for spent nuclear fuel and other radioactive waste, compliance with changing regulatory requirements, capital outlays for modifications and new plant construction, the technological and financial aspects of decommissioning plants at the end of their licensed lives and requirements relating to nuclear insurance.

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RegulatedElectric Utilities and Infrastructure is subject to the jurisdiction of the NRC for the design, construction and operation of its nuclear generating facilities. The following table includes the current year of expiration of nuclear operating licenses for nuclear stations in operation. Nuclear operating licenses are potentially subject to extension.
UnitYear of Expiration
Duke Energy Carolinas 
Catawba Unit 1 & 22043
McGuire Unit 12041
McGuire Unit 22043
Oconee Unit 1 & 22033
Oconee Unit 32034
Duke Energy Progress 
Brunswick Unit 12036
Brunswick Unit 22034
Harris2046
Robinson2030

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Duke Energy Florida has requested the NRC to terminate the Crystal River Unit 3 operating license as Crystal River Unit 3 permanently ceased operation in February 2013. For additional information on decommissioning activity, and transition to SAFSTOR, see Note 4 to the Consolidated Financial Statements, "Regulatory Matters."
On October 27, 2016, and December 15, 2016, the NRC issued combined operating licenses for Duke Energy Florida's proposed Levy Nuclear Plant Units 1 and 2 (Levy) and Duke Energy Carolinas' William States Lee III Nuclear Station Units 1 and 2, respectively. For additional information on these proposed nuclear plants, see Note 4 to the Consolidated Financial Statements, "Regulatory Matters."
The NRC issues orders with regard to security at nuclear plants in response to new or emerging threats. The most recent orders include additional restrictions on nuclear plant access, increased security measures at nuclear facilities and closer coordination with intelligence, military, law enforcement and emergency response functions at the federal, state and local levels. As the NRC, other governmental entities and the industry continue to consider security issues, it is possible that more extensive security plans could be required.
Regulation
State
The NCUC, PSCSC, FPSC, PUCO, IURC and KPSC (collectively, the state electric utility commissions) approve rates for Duke Energy's retail electric and gas service within their respective states. The state electric utility commissions, to varying degrees, have authority over the construction and operation of Regulated Utilities’Electric Utilities and Infrastructure’s generating facilities. Certificates of Public Convenience and Necessity issued by the state electric utility commissions, as applicable, authorize RegulatedElectric Utilities and Infrastructure to construct and operate its electric facilities and to sell electricity to retail and wholesale customers. Prior approval from the relevant state electric utility commission is required for Regulatedthe entities within Electric Utilities and Infrastructure to issue securities. The underlying concept of utility ratemaking is to set rates at a level that allows the utility to collect revenues equal to its cost of providing service plus earn a reasonable rate of return on its invested capital, including equity.
EachIn addition to rates approved in base rate cases, each of the state electric utility commissions allow recovery of certain costs through various cost-recovery clauses to the extent the respective commission determines in periodic hearings that such costs, including any past over or under-recovered costs, are prudent. The clauses are in addition to approved base rates.
Fuel, fuel-related costs and certain purchased power costs are eligible for recovery by Regulated Utilities. RegulatedElectric Utilities and Infrastructure. Electric Utilities and Infrastructure uses coal, hydroelectric, natural gas, oil, renewable generation and nuclear fuel to generate electricity, thereby maintaining a diverse fuel mix that helps mitigate the impact of cost increases in any one fuel. Due to the associated regulatory treatment and the method allowed for recovery, changes in fuel costs from year to year have no material impact on operating results of RegulatedElectric Utilities and Infrastructure, unless a commission finds a portion of such costs to have been imprudent. However, delays between the expenditure for fuel costs and recovery from customers can adversely impact the timing of cash flows of Regulated Utilities.Electric Utilities and Infrastructure.
The following table summarizesOn December 8, 2016, the PSCSC approved Duke Energy Progress' 2016 South Carolina rate case authorizing an increase of approximately $56 million in revenues over a two-year period. An increase of approximately $38 million in revenues was effective January 1, 2017, and an additional increase of approximately $18.5 million in revenues will be effective January 1, 2018. Duke Energy Progress will amortize approximately $18.5 million from the cost of removal reserve in 2017. Other terms include a rate of return on equity of 10.1 percent, recovery of coal ash costs incurred from January 1, 2015, through June 30, 2016, over a 15-year period and ongoing deferral of allocated ash basin closure costs from July 1, 2016, until the next base rate casescase. This represents the only base rate case approved and effective in the past three years.
 Annual
 Return
 Equity Component
    
 Increase
 on
 of Capital
    
 (in millions)
 Equity
 Structure
 Effective Date Other
Duke Energy Carolinas 2013 North Carolina Rate Case(a)
$234
 10.2% 53% September 2013 (b)
Duke Energy Carolinas 2013 South Carolina Rate Case(a)
118
 10.2% 53% September 2013 (c)
Duke Energy Progress 2012 North Carolina Rate Case(a)
178
 10.2% 53% June 2013 (d)
Duke Energy Ohio 2012 Electric Rate Case49
 9.84% 53% May 2013  
Duke Energy Ohio 2012 Natural Gas Rate Case
 9.84% 53% December 2013 (e)
Duke Energy Florida 2013 FPSC Settlement
 10.5% 49% October 2013 (f)(h)
Duke Energy Florida 2012 FPSC Settlement150
 10.5% 49% January 2013 (g)(h)
(a)Rates increase over a two or three year period as approved by the NCUC and PSCSC. Annual increase amounts represent the total increase once effective.
(b)Terms of this rate case include (i) recognition of nuclear outage expenses over the refueling cycle rather than when the outage occurs, (ii) a $10 million shareholder contribution to agencies providing energy assistance to low-income customers, and (iii) an annual reduction in the regulatory liability for costs of removal of $30 million for each of the first two years.
(c)Terms of this rate case include (i) recognition of nuclear outage expenses over the refueling cycle rather than when the outage occurs, (ii) an approximate $4 million shareholder contribution to agencies providing energy assistance to low-income customers and for economic development, and (iii) a reduction in the regulatory liability for costs of removal of $45 million for the first year.
(d)Terms of this rate case include (i) recognition of nuclear outage expenses over the refueling cycle rather than when the outage occurs, (ii) a $20 million shareholder contribution to agencies providing energy assistance to low-income customers, and (iii) a reduction in the regulatory liability for costs of removal of $20 million for the first year.
(e)Although the PUCO approved no increase in base rates, more than half of the revenue request was approved to be recovered in various riders, including recovery of costs related to former manufactured gas plants (MGP). Recovery of $56 million of MGP costs via a rider was approved in November 2013. The rider became effective in March 2014, was suspended in June 2014 and reinstated in January 2015. For additional information on MGP recovery see Note 4 to the Consolidated Financial Statements, “Regulatory Matters.”
(f)Terms of this settlement include (i) no additional base rate increases until 2019, (ii) partial recovery of Crystal River Unit 3, which began in 2014, and (iii) full recovery of Crystal River Unit 3, not to exceed $1,466 million, plus the cost to build a dry cask storage facility, beginning no later than 2017. See Note 4, "Regulatory Matters," for information regarding Duke Energy Florida's nuclear asset securitizable balance related to Crystal River Unit 3.
(g)Terms of this settlement include the removal of Crystal River Unit 3 assets from rate base. 
(h)Capital structure includes deferred income tax, customer deposits and investment tax credits.
For more information on rate matters and other regulatory proceedings, see Note 4 to the Consolidated Financial Statements, “Regulatory Matters.”

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Federal
The FERC approves Regulated Utilities’Electric Utilities and Infrastructure’s cost-based rates for electric sales to certain power and transmission wholesale customers, as well as sales of transmission service.customers. Regulations of FERC and the state electric utility commissions govern access to regulated electric and gas customers and other data by nonregulated entities and services provided between regulated and nonregulated energy affiliates. These regulations affect the activities of nonregulated affiliates with Regulated Utilities.Electric Utilities and Infrastructure.

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Regional Transmission Organizations (RTO). PJM Interconnection, LLC (PJM) and Midcontinent Independent Transmission System Operator, Inc. (MISO) are the Independent System Operators (ISO) and FERC-approved RTOs for the regions in which Duke Energy Ohio and Duke Energy Indiana operate. PJM and MISO operate energy, capacity and other markets, and through central dispatch, control the day-to-day operations of bulk power systems.systems through central dispatch.
Duke Energy Ohio is a member of PJM and Duke Energy Indiana is a member of MISO. Transmission owners in these RTOs have turned over control of their transmission facilities and their transmission systems are currently under the dispatch control of the RTOs. Transmission service is provided on a region wide,region-wide, open-access basis using the transmission facilities of the RTO members at rates based on the costs of transmission service.
Environmental. RegulatedElectric Utilities and Infrastructure is subject to the jurisdiction of the EPA and state and local environmental agencies. For a discussion of environmental regulation, see “Environmental Matters” in this section. See “Other Matters” section of MD&A for a discussion about potential Global Climate Change legislation and other EPA regulations under development and the potential impacts such legislation and regulation could have on Duke Energy’s operations.
GAS UTILITIES AND INFRASTRUCTURE
Gas Utilities and Infrastructure conducts natural gas operations primarily through the regulated public utilities of Piedmont and Duke Energy Ohio. The natural gas operations are subject to the rules and regulations of the NCUC, PSCSC, PUCO, KPSC, Tennessee Regulatory Authority (TRA) and the FERC. Gas Utilities and Infrastructure serves residential, commercial, industrial and power generation natural gas customers. Gas Utilities and Infrastructure has over 1.5 million customers, including more than 1 million customers located in North Carolina, South Carolina and Tennessee, and an additional 529,000 customers located within southwestern Ohio and northern Kentucky. In the Carolinas, Ohio and Kentucky, the service areas are comprised of numerous cities, towns and communities. In Tennessee, the service area is the metropolitan area of Nashville.
The number of residential, commercial and industrial customers within the Gas Utilities and Infrastructure service territory is expected to increase over time. Average usage per residential customer is expected to remain flat or decline for the foreseeable future, however decoupled rates in North Carolina and various rate design mechanisms in other jurisdictions to partially mitigate the impact of the declining usage per customer trend on overall profitability. While total industrial and general service sales increased in 2016 when compared to 2015, the growth rate was modest when compared to historical periods.
Gas Utilities and Infrastructure also owns, operates and has investments in various pipeline transmission and natural gas storage facilities.
Natural Gas for Retail Distribution
Gas Utilities and Infrastructure is responsible for the distribution of natural gas to retail customers in its North Carolina, South Carolina, Tennessee, Ohio and Kentucky service territories. Gas Utilities and Infrastructure’s natural gas procurement strategy is to contract primarily with major and independent producers and marketers for gas supply. It also purchases a diverse portfolio of transportation and storage service from interstate pipelines. This strategy allows Gas Utilities and Infrastructure to assure reliable natural gas supply and transportation for its firm customers during peak winter conditions. When firm pipeline services or contracted gas supplies are temporarily not needed due to market demand fluctuations, Gas Utilities and Infrastructure may release these services and supplies in the secondary market under FERC-approved capacity release provisions or make wholesale secondary market sales. In 2016, firm supply purchase commitment agreements provided approximately 86 percent of the natural gas supply for Piedmont and 53 percent for Duke Energy Ohio.
Seasonality and the Impact of Weather
Gas Utilities and Infrastructure's costs and revenues are influenced by seasonal patterns due to peak natural gas sales occurring during the winter months. Residential customers are the most impacted by weather. There are certain regulatory mechanisms for the North Carolina, South Carolina and Tennessee service territories that normalize the margins collected from certain customer classes during the winter, providing for an adjustment either up or down. In North Carolina, rate design provides protection from both weather and other usage variations such as conservation, while South Carolina and Tennessee revenues are adjusted solely based on weather. Rate design for the Ohio service territory also mitigates the impacts of weather on customer bills. Estimated weather impacts are based on actual current period weather compared to normal weather conditions. Normal weather conditions are defined as the long-term average of actual historical weather conditions.
Degree-day data are used to estimate energy required to maintain comfortable indoor temperatures based on each day’s average temperature. Heating-degree days measure the variation in weather based on the extent the average daily temperature falls below a base temperature. The methodology used to estimate the applicable impact of weather does not consider all variables that may impact customer response to weather conditions, such as wind chill. The precision of this estimate may also be impacted by applying long-term weather trends to shorter-term periods.
Competition
Gas Utilities and Infrastructure’s businesses operate as the sole supplier of natural gas within their retail service territories, with the exception of Ohio, which has a competitive natural gas supply market for distribution service. Gas Utilities and Infrastructure owns and operates facilities necessary to transport and distribute natural gas. Gas Utilities and Infrastructure earns retail margin on the transmission and distribution of natural gas and not on the cost of the underlying commodity. Services are priced by state commission approved rates designed to include the costs of providing these services and a reasonable return on invested capital. This regulatory policy is intended to provide safe and reliable natural gas at fair prices.

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In residential, commercial and industrial customer markets, natural gas distribution operations compete with other companies that supply energy, primarily electric companies, propane and fuel oil dealers, renewable energy providers and coal companies in relation to sources of energy for electric power plants, as well as nuclear energy. A significant competitive factor is price. Gas Utilities and Infrastructure's primary product competition is with electricity for heating, water heating and cooking. Increases in the price of natural gas or decreases in the price of other energy sources could negatively impact competitive position by decreasing the price benefits of natural gas to the consumer. In the case of industrial customers, such as manufacturing plants, adverse economic or market conditions, including higher gas costs, could cause these customers to suspend business operations or to use alternative sources of energy in favor of energy sources with lower per-unit costs.
Higher gas costs or decreases in the price of other energy sources may allow competition from alternative energy sources for applications that have traditionally used natural gas, encouraging some customers to move away from natural gas-fired equipment to equipment fueled by other energy sources. Competition between natural gas and other forms of energy is also based on efficiency, performance, reliability, safety and other non-price factors. Technological improvements in other energy sources and events that impair the public perception of the non-price attributes of natural gas could erode our competitive advantage. These factors in turn could decrease the demand for natural gas, impair our ability to attract new customers and cause existing customers to switch to other forms of energy or to bypass our systems in favor of alternative competitive sources. This could result in slow or no customer growth and could cause customers to reduce or cease using our product, thereby reducing our ability to make capital expenditures and otherwise grow our business and adversely affecting our earnings.
Pipeline and Storage Investments
Duke Energy, through its Gas Utilities and Infrastructure segment, is a 47 percent equity member of Atlantic Coast Pipeline, LLC (ACP) that plans to build and own the proposed Atlantic Coast Pipeline (ACP Pipeline), an approximately 600-mile interstate natural gas pipeline. Prior to the Piedmont acquisition, Duke Energy owned a 40 percent equity ownership in ACP. The pipeline is intended to transport diverse gas supplies into southeastern markets. Duke Energy Carolinas, Duke Energy Progress and Piedmont, among others, will be customers of the pipeline. The estimated in-service date of the pipeline is in the second half of 2019.
Gas Utilities and Infrastructure also has a 7.5 percent equity ownership interest in Sabal Trail Transmission, LLC (Sabal Trail). Sabal Trail is a joint venture that is constructing a 515-mile natural gas pipeline (Sabal Trail pipeline) to transport natural gas to Florida. The Sabal Trail pipeline has received regulatory approvals and initiated construction of the pipeline with an expected in-service date in mid-2017. The Sabal Trail pipeline will traverse Alabama, Georgia and Florida.
As a result of the Piedmont acquisition, Duke Energy, through its Gas Utilities and Infrastructure segment, has a 21.49 percent equity ownership interest in Cardinal Pipeline Company, LLC (Cardinal), an intrastate pipeline located in North Carolina regulated by the NCUC, and a 24 percent equity ownership interest in Constitution Pipeline Company, LLC (Constitution), an interstate pipeline development company formed to develop, construct, own and operate a 124-mile natural gas pipeline and related facilities connecting shale natural gas supplies and gathering systems in Susquehanna County, Pennsylvania, to Iroquois Gas Transmission and Tennessee Gas Pipeline systems in New York, regulated by the FERC.
Duke Energy, as a result of the Piedmont acquisition, also has a 45 percent equity ownership in Pine Needle LNG Company, LLC (Pine Needle), an interstate liquefied natural gas storage facility located in North Carolina and a 50 percent equity ownership interest in Hardy Storage Company, LLC (Hardy Storage), an underground interstate natural gas storage facility located in Hardy and Hampshire counties in West Virginia, both regulated by the FERC.
KO Transmission Company (KO Transmission), a wholly owned subsidiary of Duke Energy Ohio, is an interstate pipeline company engaged in the business of transporting natural gas and is subject to the rules and regulations of FERC. KO Transmission's 90-mile pipeline supplies natural gas to Duke Energy Ohio and interconnects with the Columbia Gulf Transmission pipeline and Tennessee Gas Pipeline. An approximately 70-mile portion of KO Transmission's pipeline facilities is co-owned by Columbia Gas Transmission Corporation.
See Notes 4, 12 and 17 to the Consolidated Financial Statements, "Regulatory Matters," "Investments in Unconsolidated Affiliates" and "Variable Interest Entities," respectively, for further information on Duke Energy's pipeline investments.
Inventory
Gas Utilities and Infrastructure must maintain adequate natural gas inventory in order to provide reliable delivery to customers. As of December 31, 2016, the inventory balance for Gas Utilities and Infrastructure was $108 million. For more information on inventory, see Note 1 to the Consolidated Financial Statements, "Summary of Significant Accounting Policies."
Regulation
State
The NCUC, PSCSC, PUCO, TRA and KPSC (collectively, the state gas utility commissions) approve rates for Duke Energy's retail natural gas service within their respective states. The state gas utility commissions, to varying degrees, have authority over the construction and operation of Gas Utilities and Infrastructure’s natural gas distribution facilities. Certificates of Public Convenience and Necessity or Certificates of Environmental Compatibility and Public Necessity issued by the state gas utility commissions or other government agencies, as applicable, authorize Gas Utilities and Infrastructure to construct and operate its natural gas distribution facilities and to sell natural gas to retail and wholesale customers. Prior approval from the relevant state gas utility commission is required for Gas Utilities and Infrastructure to issue securities. The underlying concept of utility ratemaking is to set rates at a level that allows the utility to collect revenues equal to its cost of providing service plus a reasonable rate of return on its invested capital, including equity.
In addition to amounts collected from customers though approved base rates, each of the state gas utility commissions allow recovery of certain costs through various cost-recovery clauses to the extent the respective commission determines in periodic hearings that such costs, including any past over- or under-recovered costs, are prudent.

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Natural gas costs are eligible for recovery by Gas Utilities and Infrastructure. Due to the associated regulatory treatment and the method allowed for recovery, changes in natural gas costs from year to year have no material impact on operating results of Gas Utilities and Infrastructure, unless a commission finds a portion of such costs to have not been prudent. However, delays between the expenditure for natural gas and recovery from customers can adversely impact the timing of cash flows of Gas Utilities and Infrastructure.
The following table summarizes certain components underlying recently approved and effective base rates during 2016.
 Annual
 Return
 Equity
  
 Increase
 on
 Component of
  
 (in millions)
 Equity
 Capital Structure
 Effective Date
Piedmont 2013 North Carolina Rate Case$31
 10.0% 50.7% January 2014
Piedmont 2016 South Carolina Rate Stabilization Adjustment Filing(a)
8
 10.2% 53.0% November 2016
(a)Under the rate stabilization adjustment mechanism, Piedmont resets rates in South Carolina based on updated costs and revenues on an annual basis.
Gas Utilities and Infrastructure has integrity management rider (IMR) mechanisms in North Carolina and Tennessee designed to separately track and recover certain costs associated with capital investments incurred to comply with federal pipeline safety and integrity programs, as well as additional state safety and integrity requirements in Tennessee. The following table summarizes information related to recently approved IMR filings.
 Cumulative
Annual Margin
Effective
(in millions)Investment
Revenues
Date
Piedmont 2016 IMR Filing - North Carolina(a)
$513
$56
December 2016
Piedmont 2016 IMR Filing - Tennessee(b)(c)
173
21
January 2016
(a)    Cumulative investment amounts through September 30, 2016.
(b)    Cumulative investment amounts through October 31, 2015.
(c)In November 2016, Piedmont filed a petition with the TRA seeking authority to collect an additional $1.7 million in annual margin revenue effective January 2017 based on approximately $20 million of capital investments over the twelve month period ending October 31, 2016. A ruling from the TRA is pending.
For more information on rate matters and other regulatory proceedings, see Note 4 to the Consolidated Financial Statements, “Regulatory Matters.”
Federal
Gas Utilities and Infrastructure is subject to various federal regulations, including regulations that are particular to the natural gas industry. These federal regulations include but are not limited to the following:
Regulations of the FERC affect the certification and siting of new interstate natural gas pipeline projects, the purchase and sale of, the prices paid for, and the terms and conditions of service for the interstate transportation and storage of natural gas.
Regulations of the U.S. Department of Transportation affect the design, construction, operation, maintenance, integrity, safety and security of natural gas distribution and transmission systems.
Regulations of the EPA relate to the environment including proposed air emissions regulations that would expand to include emissions of methane. For a discussion of environmental regulation, see “Environmental Matters” in this section. Refer to “Other Matters” section of Management’s Discussion and Analysis of Financial Condition and Results of Operations for a discussion about potential Global Climate Change legislation and other EPA regulations under development and the potential impacts such legislation and regulation could have on Duke Energy’s operations.
INTERNATIONAL ENERGY
International Energy principally operatesRegulations of FERC and manages power generation facilities and engages in sales and marketing of electric power,the state gas utility commissions govern access to regulated natural gas and natural gas liquids outside the U.S. Its activities principally target power generation in Latin America. Additionally, International Energy owns a 25 percent interest in National Methanol Company (NMC), a large regional producer of methanolother data by nonregulated entities and methyl tertiary butyl ether (MTBE) located in Saudi Arabia. International Energy’s economic ownership interest will decrease to 17.5 percent upon successful startup of NMC's polyacetal production facility, which is expected to occur in January 2017. International Energy will retain 25 percent of the board representationservices provided between regulated and voting rights of NMC. The investment in NMC is accounted for under the equity method of accounting.
On February 18, 2016, Duke Energy announced it had initiated a process to divest the International Energy business segment, excluding the equity method investment in NMC. The process remains in a preliminary stage and there have been no binding or non-binding offers requested or submitted. Duke Energy can provide no assurance that this process will result in a transaction and there is no specific timeline for execution of a potential transaction.
In December 2014, Duke Energy declared a taxable dividend of historical foreign earnings in the form of notes payable that resulted in the repatriation of approximately $2.7 billion in cash held and expected to be generated by International Energy over a period of up to eight years. For additional information see Note 22 to the Consolidated Financial Statements, “Income Taxes.”
Customers, Competition and Regulation
International Energy’s customers include retail distributors, electric utilities, independent power producers, marketers, and industrial and commercial companies.
International Energy’s sales and marketing of electric power and natural gas competes directly with other generators and marketers serving its market areas. Competitors are country and region-specific, but include government-owned electric generating companies, local distribution companies with self-generation capability and other privately owned electric generating and marketing companies. The principal elements of competition are price and availability, terms of service, flexibility and reliability of service.
A high percentage of International Energy’s portfolio consists of baseload hydroelectric generation facilities, which compete with other forms of electric generation available to International Energy’s customers and end-users, including natural gas and fuel oils. Economic activity, conservation, legislation, governmentalnonregulated energy affiliates. These regulations weather, including rainfall, additional generation capacities and other factors affect the supplyactivities of nonregulated affiliates with Gas Utilities and demand for electricity in the regions served by International Energy.Infrastructure.
International Energy’s operations are subject to both country-specific and international laws and regulations. See “Environmental Matters” in this section.
COMMERCIAL PORTFOLIORENEWABLES
Commercial PortfolioRenewables primarily acquires, builds, develops and operates wind and solar renewable generation and energy transmission projects throughout the continental U.S. The portfolio includes nonregulated renewable energy electric transmission, natural gas infrastructure and energy storage businesses. The segment was renamed in 2015 as a result of the sale of the nonregulated Midwest generation business, as discussed in Note 2 of the Consolidated Financial Statements, "Acquisitions and Dispositions."

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Commercial Portfolio'sRenewables' renewable energy includes utility-scale wind and solar generation assets which total more than 2,4002,900 MW across 1114 states from more than 2221 wind farms and 3863 commercial solar farms. Revenues are primarily generated by selling the power produced from renewable generation through long-term contracts to utilities, electric cooperatives, municipalities and commercial and industrial customers. In most instances, these customers have obligations under state-mandated renewable energy portfolio standards or similar state or local renewable energy goals. Energy and renewable energy credits generated by wind and solar projects are generally sold at contractual prices. In addition, as eligible wind and solar projects are placed in service, Commercial PortfolioRenewables recognizes either investment tax credits (ITC) when the renewable project achieves commercial availability or production tax credits (PTC) as power is generated by the project over 10 years. Renewable ITC are recognized over the useful life of the asset with the benefit of the tax basis adjustment due to the ITC recognized in income in the year of commercial availability.
Duke Energy, through
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PART I

As part of its growth strategy, Commercial Portfolio segment, is a 40 percent equity member of Atlantic Coast Pipeline, LLC, (ACP) that plans to build and own the proposed Atlantic Coast Pipeline (the pipeline), a 564-mile interstate natural gas pipeline. The pipeline is intended to transport diverse gas supplies into southeastern markets. Duke Energy Carolinas and Duke Energy Progress, among others, will be customers of the pipeline. The estimated in-service date of the pipeline is late 2018. For additional information on the ACP equityRenewables has expanded its investment and further details on the proposed pipeline, see Note 4 to the Consolidated Financial Statements, “Regulatory Matters."
Commercial Portfolio also has a 7.5 percent equity ownership interest in the proposed Sabal Trail natural gas pipeline. The Sabal Trail pipeline is planned to begin service in 2017 and traverse Alabama, Georgia and Florida to meet rapidly growing demand for natural gas in those states. For additional information on the Sabal Trail equity investment and further details on the proposed pipeline, see Note 4 to the Consolidated Financial Statements, “Regulatory Matters."
Commercial Portfolio has executed investments to expand and grow the businessportfolio through the addition of distributed solar companies and projects, energy storage systems and energy management solutions specifically tailored to commercial businesses. These investments include the 2015 acquisition of REC Solar Corp., a California-based provider of solar installations for retail, manufacturing, agriculture, technology, government and nonprofit customers across the U.S. and Phoenix Energy Technologies Inc., a California-based provider of enterprise energy management and information software to commercial businesses.
For additional information on Commercial Portfolio’sRenewables' generation facilities, see Item 2, “Properties.”
Other MattersRegulation
Commercial PortfolioRenewables is subject to regulation at the federal level, primarily from the FERC. Regulations of the FERC govern access to regulated market information by nonregulated entities and services provided between regulated and nonregulated utilities, pipeline certification.utilities.
For more information on rate matters, see Note 4 to the Consolidated Financial Statements, “Regulatory Matters – Rate Related Information.”
Market Environment and Competition
The market price of commodities and services, along with the quality and reliability of services provided, drive competition in the wholesale energy business. Commercial Portfolio’sRenewables' main competitors include other nonregulated generators and wholesale power providers.
Sources of Electricity
Commercial PortfolioRenewables relies on wind and solar resources for its generation of electric energy.
OTHER
The remainder of Duke Energy’s operations is presented as Other. While it is not an operating segment, Other primarily includes unallocated corporate interest expense, certain unallocated corporate costs, Bison Insurance Company Limited (Bison), Duke Energy’s wholly owned, captive insurance subsidiary, contributions to the Duke Energy Foundation, and other minorDuke Energy's 25 percent equity interest in NMC and immaterial investments in businesses the CompanyDuke Energy has retained from previous divestitures that are no longer part of its current operating segment orsegments.
Bison is in various stagesa wholly owned captive insurance subsidiary of exiting or winding down.
Bison’sDuke Energy with principal activities as a captive insurance entitythat include the indemnification of various business risks and losses, such as property, workers’ compensation and general liability of Duke Energy subsidiaries and affiliates.
NMC is a joint venture that operates in Jubail, Saudi Arabia as a large regional producer of methanol and methyl tertiary butyl ether (MTBE), an additive to gasoline. Duke Energy has an effective economic ownership interest in NMC of 25 percent and records activity of the investment using the equity method of accounting. Upon the successful startup of NMC's polyacetal production facility, which is expected to occur in the second quarter of 2017, Duke Energy’s economic ownership interest in NMC will decrease to 17.5 percent while Duke Energy will retain 25 percent of the NMC's board representation and voting rights.
Regulation
Certain entities within Other are subject to the jurisdiction of federal, state and local agencies.
Geographic Regions
For a discussion of Duke Energy’s foreign operations see “Management’s Discussion and Analysis of Results of Operations” and Note 3 to the Consolidated Financial Statements, “Business Segments.”
Employees
On December 31, 2015,2016, Duke Energy had a total of 29,18828,798 employees on its payroll. The total includes 5,3715,509 employees who are represented by labor unions under various collective bargaining agreements that generally cover wages, benefits, working practices, and other terms and conditions of employment.

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Executive Officers of the Registrants
The following table sets forth the individuals who currently serve as executive officers. Executive officers serve until their successors are duly elected or appointed.
Name 
Age(a)
 Current and Recent Positions Held
Lynn J. Good 5657
 
Chairman, President and Chief Executive Officer. Ms. Good was elected as Chairman of the Board, effective January 1, 2016, and assumed her position as President and Chief Executive Officer in July 2013. Prior to that, she served as Executive Vice President and Chief Financial Officer since 2009.
Steven K. Young 5758
 
Executive Vice President and Chief Financial Officer. Mr. Young assumed his current position in August 2013. Prior to that, he had served as Senior Vice President, Chief Accounting Officer and Controller since April 2006.
Douglas F Esamann 5859
 
Executive Vice President, Energy Solutions and President, Midwest and Florida Regions. Mr. Esamann assumed his current position in September 2016 and was Executive Vice President and President, Midwest and Florida Regions since June 2015. Prior to that, he was President, Duke Energy Indiana since November 2010.
Lloyd M. Yates 5556
 
Executive Vice President, Market SolutionsCustomer and Delivery Operations and President, Carolinas Region. Mr. Yates assumed his current position in September 2016 and was Executive Vice President, Market Solutions and President, Carolinas Region since August 2014. He held the position of Executive Vice President, Regulated Utilities from December 2012 to August 2014, and prior to that, had served as Executive Vice President, Customer Operations since July 2012, upon the merger of Duke Energy and Progress Energy. Prior to the merger, Mr. Yates was President and Chief Executive Officer of Progress Energy Carolinas, Inc., which is now known as Duke Energy Progress, LLC. since July 2007.
Dhiaa M. Jamil 5960
 
Executive Vice President and President, Regulated Generation and Transmission.Chief Operating Officer. Mr. Jamil assumed the role of Chief Operating Officer in May 2016. Prior to his current position, inhe had held the title Executive Vice President and President, Regulated Generation and Transmission since June 2015. Prior to that, he had served as Executive Vice President and President, Regulated Generation since August 2014. He served as Executive Vice President and President of Duke Energy Nuclear from March 2013 to August 2014, and as Chief Nuclear Officer from February 2008 to August 2014.February 2013. He also served as Chief Generation Officer for Duke Energy from July 2009 to June 2012.
Franklin H. Yoho57
Executive Vice President and President, Natural Gas. Mr. Yoho assumed his current position in October 2016 upon the acquisition of Piedmont by Duke Energy. Prior to this appointment, he served as Senior Vice President and Chief Commercial Officer of Piedmont since August 2011. Prior to that, he served as Senior Vice President-Commercial Operations since March 2002.
Julia S. Janson 5152
 
Executive Vice President, Chief Legal Officer and Corporate Secretary. Ms. Janson assumed her current position in December 2012 and, in February 2016, assumed the interim responsibilities for the External Affairs and Strategic Policy organization. Prior to that, she had held the position of President of Duke Energy Ohio and Duke Energy Kentucky since 2008.
A.R. MullinaxMelissa H. Anderson 6152
 
Executive Vice President, Strategic Services. Mr. Mullinax assumed his current position in August 2014. Prior to that, he had held the position of Chief Information Officer since 2007.
Melissa H. Anderson51
Senior Vice PresidentAdministration and Chief Human Resources Officer. Ms. Anderson assumed her position in May 2016 and had been Executive Vice President and Chief Human Resources Officer since January 2015. Prior to joining Duke Energy, she served as Senior Vice President of Human Resources at Domtar Inc. since 2010.
Brian D. SavoyWilliam E. Currens Jr. 4047
 
Senior Vice President, Chief Accounting Officer and Controller. Mr. SavoyCurrens assumed his current position in September 2013.May 2016. Prior to that, he had held the position of Director, Forecasting and AnalysisVice President, Investor Relations since 2009.2008.
(a)    The ages of the officers provided are as of December 31, 2015.2016.
There are no family relationships between any of the executive officers, nor any arrangement or understanding between any executive officer and any other person involved in officer selection.
Environmental Matters
The Duke Energy Registrants are subject to federal, state and local laws and regulations with regard to air and water quality, hazardous and solid waste disposal and other environmental matters. Duke Energy is also subject to international laws and regulations with regard to air and water quality, hazardous and solid waste disposal and other environmental matters. Environmental laws and regulations affecting the Duke Energy Registrants include, but are not limited to:
The Clean Air Act (CAA), as well as state laws and regulations impacting air emissions, including State Implementation Plans related to existing and new national ambient air quality standards for ozone and particulate matter. Owners and/or operators of air emission sources are responsible for obtaining permits and for annual compliance and reporting.
The Clean Water Act (CWA), which requires permits for facilities that discharge wastewaters into the environment.navigable waters.
The Comprehensive Environmental Response, Compensation and Liability Act, which can require any individual or entity that currently owns or in the past may have owned or operated a disposal site, as well as transporters or generators of hazardous substances sent to a disposal site, to share in remediation costs.
The National Environmental Policy Act, which requires federal agencies to consider potential environmental impacts in their permitting and licensing decisions, including siting approvals.

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Coal Ash Act, as amended, which establishes requirements regarding the use and closure of existing ash basins, the disposal of ash at active coal plants and the handling of surface and groundwater water impacts from ash basins in North Carolina.
RCRA, which creates the framework for the proper management of hazardous and nonhazardous solid waste, classifies CCR as nonhazardous waste and establishes requirements regarding landfill design and management and monitoring of CCR, including ash basins.
The Solid Waste Disposal Act, as amended by the RCRA, which requires certain solid wastes, including hazardous wastes, to be managed pursuant to a comprehensive regulatory regime.
The National Environmental Policy Act, which requires federal agencies to consider potential environmental impacts in their decisions, including siting approvals.
The CPP, which regulates CO2 emissions from existing fossil fuel-fired electric generating units by requiring states to develop and submit final compliance plans, or initial plans with an extension request, to the EPA by September 6, 2016, or no later than September 6, 2018, with an approved extension. On February 9, 2016, the U.S. Supreme Court granted a stay against the CPP halting enforcement until legal challenges are resolved.

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Coal Ash Act, as amended, which establishes regulations regarding the use and closure of existing ash basins, the disposal of ash at active coal plants and the handling of surface water impacts from ash basins in North Carolina.
CCR, which classifies CCR as nonhazardous waste under RCRA and establishes requirements regarding landfill design and management and monitoring of CCR.
See “Other Matters” section of Management’s Discussion and Analysis of Financial Condition and Results of Operations for a discussion about potential Global Climate Change legislation and the potential impacts such legislation could have on the Duke Energy Registrants’ operations. Additionally, other recently passed and potential future environmental laws and regulations could have a significant impact on the Duke Energy Registrants’ results of operations, cash flows or financial position. However, if and when such laws and regulations become effective, the Duke Energy Registrants will seek appropriate regulatory recovery of costs to comply within its regulated operations.oversight program.
For more information on environmental matters, involving the Duke Energy Registrants, including possible liabilitysee Notes 5 and capital costs, see Note 59 to the Consolidated Financial Statements, “Commitments and Contingencies – Environmental.”Environmental” and "Asset Retirement Obligations," respectively, and the “Other Matters” section of MD&A. Except as otherwise described in these sections, costs to the extent discussed in Note 5 to the Consolidated Financial Statements, “Commitments and Contingencies,” compliancecomply with current international, federal, state and local provisions regulating the discharge of materials into the environment or otherwiseother potential costs related to protecting the environment isare incorporated into the routine cost structure of our various business segments and isare not expected to have a material adverse effect on the competitive position, consolidated results of operations, cash flows or financial position of the Duke Energy Registrants.
The "Other Matters" section of MD&A includes an estimate of future capital expenditures required to comply with environmental regulations and a discussion of Global Climate Change including the potential impact of current and future legislation related to greenhouse gas (GHG) emissions on the Duke Energy Registrants' operations. Recently passed and potential future environmental statutes and regulations could have a significant impact on the Duke Energy Registrants’ results of operations, cash flows or financial position. However, if and when such statutes and regulations become effective, the Duke Energy Registrants will seek appropriate regulatory recovery of costs to comply within its regulated operations.
DUKE ENERGY CAROLINAS
 
Duke Energy Carolinas is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of North Carolina and South Carolina. Duke Energy Carolinas’ service area covers approximately 24,000 square miles and supplies electric service to 2.5 million residential, commercial and industrial customers. For information about Duke Energy Carolinas’ generating facilities, see Item 2, “Properties.” Duke Energy Carolinas is subject to the regulatory provisions of the NCUC, PSCSC, NRC and FERC.
Substantially all of Duke Energy Carolinas' operations are regulated and qualify for regulatory accounting. Duke Energy Carolinas operates one reportable business segment, Regulated Utilities.Electric Utilities and Infrastructure. For additional information regarding this business segment, including financial information, see Note 3 to the Consolidated Financial Statements, “Business Segments.”
PROGRESS ENERGY
 
Progress Energy is a public utility holding company primarily engaged in the regulated electric utility business and is subject to regulation by the FERC. Progress Energy conducts operations through its wholly owned subsidiaries, Duke Energy Progress and Duke Energy Florida. When discussing Progress Energy’s financial information, it necessarily includes the results of Duke Energy Progress and Duke Energy Florida.
Substantially all of Progress Energy’s operations are regulated and qualify for regulatory accounting. Progress Energy operates one reportable business segment, Regulated Utilities.Electric Utilities and Infrastructure. For additional information regarding this business segment, including financial information, see Note 3 to the Consolidated Financial Statements, “Business Segments.”
DUKE ENERGY PROGRESS
 
Duke Energy Progress is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of North Carolina and South Carolina. Duke Energy Progress’ service area covers approximately 32,000 square miles and supplies electric service to approximately 1.5 million residential, commercial and industrial customers. For information about Duke Energy Progress’ generating facilities, see Item 2, “Properties.” Duke Energy Progress is subject to the regulatory provisions of the NCUC, PSCSC, NRC and FERC.
Substantially all of Duke Energy Progress’ operations are regulated and qualify for regulatory accounting. Duke Energy Progress operates one reportable business segment, Regulated Utilities.Electric Utilities and Infrastructure. For additional information regarding this business segment, including financial information, see Note 3 to the Consolidated Financial Statements, “Business Segments.”
DUKE ENERGY FLORIDA
 
Duke Energy Florida is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of Florida. Duke Energy Florida’s service area covers approximately 13,000 square miles and supplies electric service to approximately 1.71.8 million residential, commercial and industrial customers. For information about Duke Energy Florida’s generating facilities, see Item 2, “Properties.” Duke Energy Florida is subject to the regulatory provisions of the FPSC, NRC and FERC.
Substantially all of Duke Energy Florida’s operations are regulated and qualify for regulatory accounting. Duke Energy Florida operates one reportable business segment, Regulated Utilities.Electric Utilities and Infrastructure. For additional information regarding this business segment, including financial information, see Note 3 to the Consolidated Financial Statements, “Business Segments.”

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DUKE ENERGY OHIO
 
Duke Energy Ohio is a regulated public utility primarily engaged in the transmission and distribution of electricity in portions of Ohio and Kentucky, in the generation and sale of electricity in portions of Kentucky and the transportation and sale of natural gas in portions of Ohio and Kentucky. Duke Energy Ohio also conducts competitive auctions for retail electricity supply in Ohio whereby recovery of the energy price is from retail customers. Operations in Kentucky are conducted through its wholly owned subsidiary, Duke Energy Kentucky, Inc. (Duke Energy Kentucky). References herein to Duke Energy Ohio include Duke Energy Ohio and its subsidiaries, unless otherwise noted. Duke Energy Ohio is subject to the regulatory provisions of the PUCO, KPSC and FERC.

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Duke Energy Ohio’s service area covers approximately 3,000 square miles and supplies electric service to approximately 840,000850,000 residential, commercial and industrial customers and provides transmission and distribution services for natural gas to approximately 525,000529,000 customers. For information about Duke Energy Ohio's generating facilities, see Item 2, “Properties.”
KO Transmission, a wholly owned subsidiary of Duke Energy Ohio, is an interstate pipeline company engaged in the business of transporting natural gas and is subject to the rules and regulations of FERC. KO Transmission's 90-mile pipeline supplies natural gas to Duke Energy Ohio and interconnects with the Columbia Gulf Transmission pipeline and Tennessee Gas Pipeline. An approximately 70-mile portion of KO Transmission's pipeline facilities is co-owned by Columbia Gas Transmission Corporation.
On April 2, 2015, Duke Energy completed the sale of its nonregulated Midwest generation business, which sold power into wholesale energy markets, to a subsidiary of Dynegy. For further information about the sale of the Midwest Generation business, refer to Note 2 to the Consolidated Financial Statements, "Acquisitions and Dispositions."
Substantially all of Duke Energy Ohio's operations that remain after the sale qualify for regulatory accounting.
Business Segments
Duke Energy Ohio hadhas two reportable operating segments, RegulatedElectric Utilities and Commercial Portfolio, prior to the sale of the nonregulated Midwest generation business. As a result of the sale Commercial Portfolio no longer qualifies as a Duke Energy Ohio reportable operating segment. Therefore, for periods subsequent to the sale, beginning in the second quarter of 2015, all of the remaining assetsInfrastructure and related results of operations previously presented in Commercial Portfolio are presented in RegulatedGas Utilities and Other.Infrastructure. For additional information on thisthese business segment,segments, including financial information, see Note 3 to the Consolidated Financial Statements, “Business Segments.”
DUKE ENERGY INDIANA
 
Duke Energy Indiana is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of Indiana. Duke Energy Indiana’s service area covers 23,000 square miles and supplies electric service to 810,000820,000 residential, commercial and industrial customers. See Item 2, “Properties” for further discussion of Duke Energy Indiana’s generating facilities, transmission and distribution. Duke Energy Indiana is subject to the regulatory provisions of the IURC and FERC.
Substantially all of Duke Energy Indiana’s operations are regulated and qualify for regulatory accounting. Duke Energy Indiana operates one reportable business segment, Regulated Utilities.Electric Utilities and Infrastructure. For additional information regarding this business segment, including financial information, see Note 3 to the Consolidated Financial Statements, “Business Segments.”
ITEM 1A. RISK FACTORS
 
In addition to other disclosures within this Form 10-K, including Management’s"Management's Discussion and Analysis of Financial Condition and Results of Operations – Matters Impacting Future ResultsResults" for each registrant in Item 7, and other documents filed with the SEC from time to time, the following factors should be considered in evaluating Duke Energy and its subsidiaries. Such factors could affect actual results of operations and cause results to differ substantially from those currently expected or sought. Unless otherwise indicated, risk factors discussed below generally relate to risks associated with all of the Duke Energy Registrants. Risks identified at the Subsidiary Registrant level are generally applicable to Duke Energy.
Business Strategy Risks
Duke Energy’s future results could be adversely affected if it is unable to implement its business strategy.
Duke Energy’s future results of operations depend, in significant part, on the extent to which it can implement its business strategy successfully. Duke Energy's strategy, including transforming the customer experience, modernizing the energy grid, generating cleaner energy, expansion of natural gas infrastructure and engaging employees and stakeholders to accomplish these priorities, is subject to business, economic and competitive uncertainties and contingencies, many of which are beyond its control. As a consequence, Duke Energy may not be unableable to obtainfully implement or realize the approvals required to complete its acquisition of Piedmont or, in order to do so, the combined company may be required to comply with material restrictions or conditions.
On October 24, 2015, Duke Energy entered into a Merger Agreement with Piedmont. For the acquisition to be completed, various approvals must be obtained from state utility and regulatory authorities. These governmental authorities may impose conditions on the completion, or require changes to the terms, of the transaction, including restrictions or conditions on the business, operations, or financial performance of the combined company following completion of the transaction. These conditions or changes could have the effect of delaying completion of the acquisition or imposing additional costs on or limiting the revenues of the combined company following the transaction, which could have a material adverse effect on the financial position,anticipated results of operations or cash flows of the combined company and/or cause either Duke Energy or Piedmont to abandon the transaction.its strategy.
If completed, Duke Energy’s acquisition of Piedmont may not achieve its intended results.
Duke Energy and Piedmont entered into the merger agreement with the expectation that the transaction would result in various benefits, including, among other things, being accretive to earnings and foundational to establishing a broader gas infrastructure business within Duke Energy. Achieving the anticipated benefits of the transaction is subject to a number of uncertainties, including whether the business of Piedmont is integrated in an efficient and effective manner. Failure to achieve these anticipated benefits could result in increased costs; decreases in the amount of expected revenues generated by the combined company and diversion of management’s time and energy, all of which could have an adverse effect on the combined company’s financial position, results of operations or cash flows.
Failure to complete the transaction with Piedmont could negatively impact Duke Energy’s stock price and Duke Energy’s future business and financial results.
If Duke Energy’s acquisition of Piedmont is not completed, Duke Energy’s ongoing business and financial results may be adversely affected and Duke Energy will be subject to a number of risks, including the following:
Duke Energy may be required, under specified circumstances set forth in the Merger Agreement, to pay Piedmont a termination fee of $250 million;
Duke Energy will be required to pay costs relating to the transaction, including legal, accounting, financial advisory, filing and printing costs, whether or not the transaction is completed; and
execution of Duke Energy’s acquisition of Piedmont (including integration planning) may require substantial commitments of time and resources by our management, which could otherwise have been devoted to other opportunities that may have been beneficial to Duke Energy.

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Duke Energy could also be subject to litigation related to any failure to complete the transaction with Piedmont. If the transaction is not completed, these risks may materialize and may adversely affect Duke Energy’s financial position, results of operations or cash flows.
Regulatory, Legislative and Legal Risks
The Duke Energy Registrants’ regulated electricutility revenues, earnings and results are dependent on state legislation and regulation that affect electric generation, electric and gas transmission, distribution and related activities, which may limit their ability to recover costs.
The Duke Energy Registrants’ regulated electric and natural gas utility businesses are regulated on a cost-of-service/rate-of-return basis subject to statutes and regulatory commission rules and procedures of North Carolina, South Carolina, Florida, Ohio, Tennessee, Indiana and Kentucky. If the Duke Energy Registrants’ regulated utility earnings exceed the returns established by the state utility commissions, retail electric and natural gas rates may be subject to review and possible reduction by the commissions, which may decrease the Duke Energy Registrants’ future earnings. Additionally, if regulatory bodies do not allow recovery of costs incurred in providing service on a timely basis, the Duke Energy Registrants’ future earnings could be negatively impacted.
If legislative and regulatory structures were to evolve in such a way that the Duke Energy Registrants’ exclusive rights to serve their regulated customers were eroded, their future earnings could be negatively impacted. In addition, federalFederal and state regulations, laws and other efforts designed to promote and expand the use of energy efficiency measures and distributed generation technologies, such as rooftopprivate solar and battery storage, in Duke Energy service territories could result in customers leaving the electric distribution system and an increasedincrease in customer net energy metering, which allows customers with rooftopprivate solar to receive bill credits for surplus power at the full retail amount. Over time, customer adoption of these technologies and increased energy efficiency could result in excess generation resources as well as stranded costs if the CompanyDuke Energy is not able to fully recover the costs and investment in generation.
State regulators have approved various mechanisms to stabilize natural gas utility margins, including margin decoupling in North Carolina, rate stabilization in South Carolina and uncollectible natural gas cost recovery in all states. State regulators have approved other margin stabilizing mechanisms that, for example, allow for recovery of margin losses associated with negotiated transactions designed to retain large volume customers that could use alternative fuels or that may otherwise directly access natural gas supply through their own connection to an interstate pipeline. If regulators decided to discontinue the Duke Energy Registrants' use of tariff mechanisms, it would negatively impact results of operations, financial condition and cash flows. In addition, regulatory authorities also review whether natural gas costs are prudent and can disallow the recovery of a portion of natural gas costs that the Duke Energy Registrants seek to recover from customers, which would adversely impact earnings.
The electric rates that the Duke Energy Registrants’ regulated utility businesses are allowed to charge are established by state utility commissions in rate case proceedings, which may limit their ability to recover costs and earn an appropriate return on investment.
The rates that the Duke Energy Registrants’ regulated utility business are allowed to charge significantly influences the results of operations, financial position and liquidity of the Duke Energy Registrants. The regulation of the rates that the regulated utility businesses charge customers is determined, in large part, by state utility commissions in rate case proceedings. Negative decisions made by these regulators could have a material adverse effect on the Duke Energy Registrants’ results of operations, financial position or liquidity and affect the ability of the Duke Energy Registrants to recover costs and an appropriate return on the significant infrastructure investments being made. Duke Energy cannot predict the outcome of these rate case proceedings.
Deregulation or restructuring in the electric industry may result in increased competition and unrecovered costs that could adversely affect the Duke Energy Registrants’ financial position, results of operations or cash flows and their utility businesses.
Increased competition resulting from deregulation or restructuring legislation could have a significant adverse impact on the Duke Energy Registrants’ results of operations, financial position or cash flows. Retail competition and the unbundling of regulated electric service could have a significant adverse financial impact on the Duke Energy Registrants due to an impairment of assets, a loss of retail customers, lower profit margins or increased costs of capital. The Duke Energy Registrants cannot predict the extent and timing of entry by additional competitors into the electric markets. The Duke Energy Registrants cannot predict if or when they will be subject to changes in legislation or regulation, nor can they predict the impact of these changes on their financial position, results of operations or cash flows.
The Duke Energy Registrants’ businesses are subject to extensive federal regulation and a wide variety of laws and governmental policies, including taxes, that willmay change over time in ways that affect their operations and costs.
Duke Energy is subject to regulations under a wide variety of U.S. federal and state regulations and policies. There can be no assurance that laws, regulations and policies will not be changed in ways that result in material modifications of business models and objectives or affect returns on investment by restricting activities and products, subjecting them to escalating costs or prohibiting them outright. In particular, a substantial revision to the U.S. tax code, such as changes to the corporate tax rate or a material change in the deductibility of interest could significantly change Duke Energy's effective tax rate, the cost of capital and have an impact on results of operations and cash flows.
The Duke Energy Registrants are subject to regulation by FERC, NRC, EPA and various other federal agencies as well as the North American Electric Reliability Corporation. Regulation affects almost every aspect of the Duke Energy Registrants’ businesses, including, among other things, their ability to: take fundamental business management actions; determine the terms and rates of transmission and distribution services; make acquisitions; issue equity or debt securities; engage in transactions with other subsidiaries and affiliates; and pay dividends upstream to the Duke Energy Registrants. Changes to federal regulations are continuous and ongoing. The Duke Energy Registrants cannot predict the future course of regulatory changes or the ultimate effect those changes will have on their businesses. However, changes in regulation can cause delays in or affect business planning and transactions and can substantially increase the Duke Energy Registrants’ costs.
The Dan River ash basin release could impact the reputation and financial condition of the Duke Energy Registrants.
There is uncertainty regarding the extent and timing of future additional costs and liabilities related to the Dan River ash basin release, including the amount and extent of any pending or future civil penalties and resulting litigation. These uncertainties are likely to continue for an extended period and may further increase costs. Thus, the Dan River ash basin release could have an adverse impact on the reputation of the Duke Energy Registrants and their financial position, results of operations and cash flows.
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The Duke Energy Registrants are subject to numerous environmental laws and regulations requiring significant capital expenditures that can increase the cost of operations, and which may impact or limit business plans, or cause exposure to environmental liabilities.
The Duke Energy Registrants are subject to numerous environmental laws and regulations affecting many aspects of their present and future operations, including CCRs, air emissions, water quality, wastewater discharges, solid waste and hazardous waste. These laws and regulations can result in increased capital, operating and other costs. These laws and regulations generally require the Duke Energy Registrants to obtain and comply with a wide variety of environmental licenses, permits, inspections and other approvals. Compliance with environmental laws and regulations can require significant expenditures, including expenditures for cleanup costs and damages arising from contaminated properties. Failure to comply with environmental regulations may result in the imposition of fines, penalties and injunctive measures affecting operating assets. The steps the Duke Energy Registrants could be required to take to ensure their facilities are in compliance could be prohibitively expensive. As a result, the Duke Energy Registrants may be required to shut down or alter the operation of their facilities, which may cause the Duke Energy Registrants to incur losses. Further, the Duke Energy Registrants may not be successful in recovering capital and operating costs incurred to comply with new environmental regulations through existing regulatory rate structures and their contracts with customers. Also, the Duke Energy Registrants may not be able to obtain or maintain from time to time all required environmental regulatory approvals for their operating assets or development projects. Delays in obtaining any required environmental regulatory approvals, failure to obtain and comply with them or changes in environmental laws or regulations to more stringent compliance levels could result in additional costs of operation for existing facilities or development of new facilities being prevented, delayed or subject to additional costs. Although it is not expected that the costs to comply with current environmental regulations will have a material adverse effect on the Duke Energy Registrants’ financial position, results of operations or cash flows due to regulatory cost recovery, the Duke Energy Registrants are at risk that the costs of complying with environmental regulations in the future will have such an effect.

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The EPA has recently enacted or proposed new federal regulations governing the management of cooling water intake structures, wastewater and CO2 emissions. These regulations may require the Duke Energy Registrants to make additional capital expenditures and increase operating and maintenance costs.
The Duke Energy’s investmentsEnergy Registrants' operations, capital expenditures and projects located outside of the U.S. expose it to risksfinancial results may be affected by regulatory changes related to the laws, taxes, economicimpacts of global climate change.
There is continued concern, both nationally and political conditions,internationally, about climate change. Although there is no federal climate change legislation, in 2016, the United States signed the Paris Agreement on climate change by which the signatories agreed to pursue efforts to limit the increase in the global average temperature by less than 2 degrees Celsius above pre-industrial levels. If the United States honors the Paris accord, the EPA may adopt and policiesimplement regulations to further restrict emissions of foreign governments. These risks may delay or reduce Duke Energy’s realizationGHGs. Increased regulation of value from its international projects.
GHG emissions could impose significant additional costs on the Duke Energy currently ownsRegistrants' operations, their suppliers and may acquire and/or dispose of material energy-related investmentscustomers. Regulatory changes could also result in generation facilities to be retired early and projects outside the U.S. The economic, regulatory, market and political conditionsresult in some of the countries wherestranded costs if Duke Energy has interestsis not able to fully recover the costs and investment in generation. At this time, the effect that climate change regulation may impact its abilityhave in the future on Duke Energy's business, financial condition or results of operations is not able to obtain financing on suitable terms. Other risks relate to its customers’ ability to honor their obligations with respect to projects and investments, delays in construction, limitations on its ability to enforce legal rights, and interruption of business, as well as risks of war, expropriation, nationalization, renegotiation, trade sanctions or nullification of existing contracts and changes in law, regulations, market rules or tax policy.be predicted.
Operational Risks
The Duke Energy Registrants’ results of operations may be negatively affected by overall market, economic and other conditions that are beyond their control.
Sustained downturns or sluggishness in the economy generally affect the markets in which the Duke Energy Registrants operate and negatively influence electricity operations. Declines in demand for electricity or natural gas as a result of economic downturns in the Duke Energy Registrants’ regulated electric service territories will reduce overall sales and lessen cash flows, especially as industrial customers reduce production and, therefore, consumption of electricity.electricity and the use of natural gas. Although the Duke Energy Registrants’ regulated electric business isand natural gas businesses are subject to regulated allowable rates of return and recovery of certain costs, such as fuel and purchased gas costs, under periodic adjustment clauses, overall declines in electricity or natural gas sold as a result of economic downturn or recession could reduce revenues and cash flows, thereby diminishing results of operations. Additionally, prolonged economic downturns that negatively impact the Duke Energy Registrants’ results of operations and cash flows could result in future material impairment charges to write-down the carrying value of certain assets, including goodwill, to their respective fair values.
The Duke Energy Registrants also sell electricity into the spot market or other competitive power markets on a contractual basis. With respect to such transactions, the Duke Energy Registrants are not guaranteed any rate of return on their capital investments through mandated rates, and revenues and results of operations are likely to depend, in large part, upon prevailing market prices. These market prices may fluctuate substantially over relatively short periods of time and could reduce the Duke Energy Registrants’ revenues and margins, thereby diminishing results of operations.
Factors that could impact sales volumes, generation of electricity and market prices at which the Duke Energy Registrants are able to sell electricity and natural gas are as follows:
weather conditions, including abnormally mild winter or summer weather that cause lower energy or natural gas usage for heating or cooling purposes, respectively,as applicable, and periods of low rainfall that decrease the ability to operate facilities in an economical manner;
supply of and demand for energy commodities;
transmission or transportation constraints or inefficiencies that impact nonregulated energy operations;
availability of competitively priced alternative energy sources, which are preferred by some customers over electricity produced from coal, nuclear or natural gas plants, and customer usage of energy efficientenergy-efficient equipment that reduces energy demand;
natural gas, crude oil and refined products production levels and prices;

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ability to procure satisfactory levels of inventory, such as coal, natural gas and uranium; and
capacity and transmission service into, or out of, the Duke Energy Registrants’ markets.
Duke Energy’s acquisition of Piedmont may not achieve its intended results.
Duke Energy and Piedmont completed the merger agreement with the expectation that the transaction will result in various benefits, including, among other things, being accretive to earnings and foundational to establishing a broader natural gas infrastructure business within Duke Energy. Achieving the anticipated benefits of the transaction is subject to a number of uncertainties, including whether the business of Piedmont is integrated in an efficient and effective manner. Failure to achieve these anticipated benefits could result in increased costs, decreases in the amount of expected revenues generated by the combined company and diversion of management’s time and energy, all of which could have an adverse effect on the combined company’s financial position, results of operations or cash flows.
Natural disasters or operational accidents may adversely affect the Duke Energy Registrants’ operating results.
Natural disasters (such as electromagnetic events or the 2011 earthquake and tsunami in Japan) or other operational accidents within the company or industry (such as the San Bruno, California natural gas transmission pipeline failure) could have direct significant impacts on the Duke Energy Registrants as well as on key contractors and suppliers. Such events could indirectly impact the Duke Energy Registrants through changes to policies, laws and regulations whose compliance costs have a significant impact on the Duke Energy Registrants’ financial position, results of operations and cash flows.
The reputation and financial condition of the Duke Energy Registrants could be negatively impacted due to their obligations to comply with federal and state regulations, laws, and other legal requirements that govern the operations, assessments, storage, closure, remediation, disposal and monitoring relating to coal combustion residuals (CCR),CCR, the high costs and new rate impacts associated with implementing these new CCR-related requirements and the strategies and methods necessary to implement these requirements in compliance with these legal obligations.
As a result of electricity produced for decades at coal-fired power plants, the Duke Energy Registrants manage large amounts of CCR that are primarily stored in dry storage within landfills or combined with water in other surface impoundments, all in compliance with applicable regulatory requirements. However, the potential exists for another CCR-related incident, such as the one that occurred during the 2014 Dan River Steam Station ash basin release, that could raise environmental or general public health concerns. Such a CCR-related incident could have a material adverse impact on the reputation and financial condition of the Duke Energy Registrants.

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During 2015, EPA regulations were enacted related to the management of CCR from power plants. These regulations classify CCR as nonhazardous waste under the RCRA and apply to electric generating sites with new and existing landfills, new and existing surface impoundments, structural fills and CCR piles, and establishes requirements regarding landfill design, structural integrity design and assessment criteria for surface impoundments, groundwater monitoring, protection and protectionremedial procedures and other operational and reporting procedures for the disposal and management of CCR. In addition to the federal regulations, CCR landfills and surface impoundments will continue to be independently regulated by existing state laws, regulations and permits, as well as additional legal requirements that may be imposed in the future. These federal and state laws, regulations and other legal requirements may require or result in additional expenditures, increased operating and maintenance costs and/or result in closure of certain power generating facilities, which could affect the financial position, results of operations and cash flows of the Duke Energy Registrants. The Duke Energy Registrants intend to seek full cost recovery for expenditures through the normal ratemaking process with state and federal utility commissions, who permit recovery in rates of necessary and prudently incurred costs associated with the Duke Energy Registrants’ regulated operations, and through other wholesale contracts with terms that contemplate recovery of such costs, although there is no guarantee of full cost recovery. In addition, the timing for recovery of such costs could have a material adverse impact on Duke Energy's cash flows.
The Duke Energy Registrants have recognized significant asset retirement obligations related to these CCR-related requirements. In 2015, closureClosure activities began in 2015 at the four sites specified as high priority by the North Carolina Coal Ash Management Act (Coal Ash Act) and at the W.S. Lee Steam Station site in South Carolina in connection with other legal requirements. Excavation at these sites involves movement of large amounts of CCR materials to offsiteoff-site locations for use as structural fill, and to offsiteappropriate engineered off-site or onsite lined landfills.landfills or conversion of the ash for beneficial use. At other sites, preliminary planning and closure methods have been studied and factored into the estimated retirement and management costs. The Coal Ash Act requires CCR surface impoundments in North Carolina to be closed, with the closure method based on a risk ranking classification determined by state regulators and the North Carolina Coal Ash Commission. Other than the high priority sites specifically delineated by Coal Ash Act, the North Carolina Department of Environmental Quality (NCDEQ) has issued either preliminary draft risk rankings or has yet to designate specific risk classifications. These proposed risk rankings remain subject to a public comment period, including public meetings, followed by a final risk ranking recommendation by the NCDEQ to the Coal Ash Commission, for the Coal Ash Commission’s final approval.regulators. As the closure and CCR management work progresses final risk ranking classifications of surface impoundments in North Carolina are delineated, and final closure plans and corrective action measures are developed and approved at each site, the scope and complexity of work and the amount of CCR material could be greater than estimates and could, therefore, materially increase compliance expenditures and rate impacts.
The Duke Energy Registrants’ financial position, results of operations and cash flows may be negatively affected by a lack of growth or slower growth in the number of customers, or decline in customer demand or number of customers.
Growth in customer accounts and growth of customer usage each directly influence demand for electricity and natural gas and the need for additional power generation and delivery facilities. Customer growth and customer usage are affected by a number of factors outside the control of the Duke Energy Registrants, such as mandated energy efficiency measures, demand-side management goals, distributed generation resources and economic and demographic conditions, such as population changes, job and income growth, housing starts, new business formation and the overall level of economic activity.
Certain regulatory and legislative bodies have introduced or are considering requirements and/or incentives to reduce energy consumption by certain dates. Additionally, technological advances driven by federal laws mandating new levels of energy efficiency in end-use electric devices or other improvements in or applications of technology could lead to declines in per capita energy consumption.
Advances in distributed generation technologies that produce power, including fuel cells, micro-turbines, wind turbines and solar cells, may reduce the cost of alternative methods of producing power to a level competitive with central power station electric production utilized by the Duke Energy Registrants.

25


PART I

Some or all of these factors could result in a lack of growth or decline in customer demand for electricity or number of customers and may cause the failure of the Duke Energy Registrants to fully realize anticipated benefits from significant capital investments and expenditures which could have a material adverse effect on their financial position, results of operations and cash flows.
Furthermore, the Duke Energy Registrants currently have energy efficiency riders in place to recover the cost of energy efficiency programs in North Carolina, South Carolina, Florida, Ohio and Kentucky. Should the Duke Energy Registrants be required to invest in conservation measures that result in reduced sales from effective conservation, regulatory lag in adjusting rates for the impact of these measures could have a negative financial impact.
The Duke Energy Registrants’ operating results may fluctuate on a seasonal and quarterly basis and can be negatively affected by changes in weather conditions and severe weather.weather, including extreme weather conditions associated with climate change.
Electric power generation isand natural gas distribution are generally a seasonal business.businesses. In most parts of the U.S., and other markets in which Duke Energy operates,the demand for power peaks during the warmer summer months, with market prices also typically peaking at that time. In other areas, demand for power peaks during the winter. Demand for natural gas peaks during the winter months. Further, extreme weather conditions such as heat waves, or winter storms and severe weather associated with climate change could cause these seasonal fluctuations to be more pronounced. As a result, in the future, the overall operating results of the Duke Energy Registrants’ businesses may fluctuate substantially on a seasonal and quarterly basis and thus make period-to-period comparison less relevant.
Sustained severe drought conditions could impact generation by hydroelectric plants, as well as fossil and nuclear plant operations, as these facilities use water for cooling purposes and for the operation of environmental compliance equipment. Furthermore, destruction caused by severe weather events, such as hurricanes, tornadoes, severe thunderstorms, snow and ice storms, can result in lost operating revenues due to outages;outages, property damage, including downed transmission and distribution lines;lines, and additional and unexpected expenses to mitigate storm damage. The cost of storm restoration efforts may not be fully recoverable through the regulatory process.

23


PART I

The Duke Energy Registrants’ sales may decrease if they are unable to gain adequate, reliable and affordable access to transmission assets.
The Duke Energy Registrants depend on transmission and distribution facilities owned and operated by utilities and other energy companies to deliver electricity sold to the wholesale market. FERC’s power transmission regulations as well as those of Duke Energy’s international markets, require wholesale electric transmission services to be offered on an open-access, non-discriminatory basis. If transmission is disrupted, or if transmission capacity is inadequate, the Duke Energy Registrants’ ability to sell and deliver products may be hindered.
The different regional power markets have changing regulatory structures, which could affect growth and performance in these regions. In addition, the ISOs who oversee the transmission systems in regional power markets have imposed in the past, and may impose in the future, price limitations and other mechanisms to address volatility in the power markets. These types of price limitations and other mechanisms may adversely impact the profitability of the Duke Energy Registrants’ wholesale power marketing business.
Duke Energy may be unable to complete necessary or desirable pipeline expansion or infrastructure development or maintenance projects, which may delay or prevent the Duke Energy Registrants from serving natural gas customers or expanding the natural gas business.
In order to serve current or new natural gas customers or expand the service to existing customers, the Duke Energy Registrants need to maintain, expand or upgrade distribution, transmission and/or storage infrastructure, including laying new pipeline and building compressor stations. Various factors, such as the inability to obtain required approval from local, state and/or federal regulatory and governmental bodies, public opposition to projects, inability to obtain adequate financing, competition for labor and materials, construction delays, cost overruns and the inability to negotiate acceptable agreements relating to rights of way, construction or other material development components, may prevent or delay the completion of projects or increase costs. As a result, the Duke Energy Registrants may be unable to adequately serve existing natural gas customers or support customer growth or could incur higher than anticipated costs, which could have a negative financial impact.
The availability of adequate interstate pipeline transportation capacity and natural gas supply may decrease.
The Duke Energy Registrants purchase almost all of their natural gas supply from interstate sources that must be transported to the applicable service territories. Interstate pipeline companies transport the natural gas to the Duke Energy Registrants' systems under firm service agreements that are designed to meet the requirements of their core markets. A significant disruption to interstate pipelines capacity or reduction in natural gas supply due to events including, but not limited to, operational failures or disruptions, hurricanes, tornadoes, floods, freeze off of natural gas wells, terrorist or cyberattacks or other acts of war or legislative or regulatory actions or requirements, including remediation related to integrity inspections, could reduce the normal interstate supply of natural gas and thereby reduce earnings. Moreover, if additional natural gas infrastructure, including, but not limited to, exploration and drilling rigs and platforms, processing and gathering systems, off-shore pipelines, interstate pipelines and storage, cannot be built at a pace that meets demand, then growth opportunities could be limited and earnings negatively impacted.
Fluctuations in commodity prices or availability may adversely affect various aspects of the Duke Energy Registrants’ operations as well as their financial condition, results of operations and cash flows.
The Duke Energy Registrants are exposed to the effects of market fluctuations in the price of natural gas, coal, fuel oil, nuclear fuel, electricity and other energy-related commodities as a result of their ownership of energy-related assets. Fuel costs are recovered primarily through cost-recovery clauses, subject to the approval of state utility commissions.

26


PART I

Additionally, the Duke Energy Registrants are exposed to risk that counterparties will not be able to fulfill their obligations. Disruption in the delivery of fuel, including disruptions as a result of, among other things, transportation delays, weather, labor relations,force majeure events or environmental regulations affecting any of these fuel suppliers, could limit the Duke Energy RegistrantsRegistrants' ability to operate their facilities. Should counterparties fail to perform, the Duke Energy Registrants might be forced to replace the underlying commitment at prevailing market prices possibly resulting in losses in addition to the amounts, if any, already paid to the counterparties.
Certain of the Duke Energy Registrants’ hedge agreements may result in the receipt of, or posting of, derivative collateral with counterparties, depending on the daily derivative position. Fluctuations in commodity prices that lead to the return of collateral received and/or the posting of collateral with counterparties negatively impact liquidity. Downgrades in the Duke Energy Registrants’ credit ratings could lead to additional collateral posting requirements. The Duke Energy Registrants continually monitor derivative positions in relation to market price activity.
Potential terrorist activities, or military or other actions, could adversely affect the Duke Energy Registrants’ businesses.
The continued threat of terrorism and the impact of retaliatory military and other action by the U.S. and its allies may lead to increased political, economic and financial market instability and volatility in prices for natural gas and oil, which may have material adverse effects in ways the Duke Energy Registrants cannot predict at this time. In addition, future acts of terrorism and possible reprisals as a consequence of action by the U.S. and its allies could be directed against companies operating in the U.S. or their international affiliates. Information technology systems, transmission and distribution and generation facilities such as nuclear plants could be potential targets of terrorist activities or harmful activities by individuals or groups. The potential for terrorism has subjected the Duke Energy Registrants’ operations to increased risks and could have a material adverse effect on their businesses. In particular, the Duke Energy Registrants may experience increased capital and operating costs to implement increased security for their information technology systems, transmission and distribution and generation facilities, including nuclear power plants under the NRC’s design basis threat requirements. These increased costs could include additional physical plant security and security personnel or additional capability following a terrorist incident.
Cyberattacks and data security breaches could adversely affect the Duke Energy Registrants' businesses.
Information security risks have generally increased in recent years as a result of the proliferation of new technologies and the increased sophistication and frequency of cyberattacks and data security breaches. The utility industry requires the continued operation of sophisticated information technology systems and network infrastructure, which are part of an interconnected regional grid. Additionally, connectivity to the Internetinternet continues to increase through smart grid and other initiatives. Because of the critical nature of the infrastructure, increased connectivity to the Internetinternet and technology systems’ inherent vulnerability to disability or failures due to hacking, viruses, acts of war or terrorism or other types of data security breaches, the Duke Energy Registrants face a heightened risk of cyberattack. In the event of such an attack, the Duke Energy Registrants could (i) have business operations disrupted, property damaged, customer information stolen and other private information accessed, (ii) experience substantial loss of revenues, repair and restoration costs, implementation costs for additional security measures to avert future cyberattacks and other financial loss and (iii) be subject to increased regulation, litigation and reputational damage.
Failure to attract and retain an appropriately qualified workforce could unfavorably impact the Duke Energy Registrants’ results of operations.
Certain events, such as an aging workforce, mismatch of skill set or complement to future needs, or unavailability of contract resources may lead to operating challenges and increased costs. The challenges include lack of resources, loss of knowledge base and the lengthy time required for skill development. In this case, costs, including costs for contractors to replace employees, productivity costs and safety costs, may rise.increase. Failure to hire and adequately train replacement employees, including the transfer of significant internal historical knowledge and expertise to new employees, or future availability and cost of contract labor may adversely affect the ability to manage and operate the business, especially considering the workforce needs associated with nuclear generation facilities and new skills required to operate a modernized, technology-enabled power grid. If the Duke Energy Registrants are unable to successfully attract and retain an appropriately qualified workforce, their financial position, or results of operations or cash flows could be negatively affected.

24


PART I

Duke Energy’s investments and projects located outside of the U.S. expose it to risks related to fluctuations in currency rates. These risks, and Duke Energy’s activities to mitigate such risks, may adversely affect its cash flows and results of operations.
Duke Energy’s operations and investments outside the U.S. expose it to risks related to fluctuations in currency rates. As each local currency’s value changes relative to the U.S. dollar, the value in U.S. dollars of Duke Energy’s assets and liabilities in such locality and the cash flows generated in such locality, expressed in U.S. dollars, also change. Duke Energy’s primary foreign currency rate exposure is to the Brazilian real.
Duke Energy selectively mitigates some risks associated with foreign currency fluctuations by, among other things, indexing contracts to the U.S. dollar and/or local inflation rates, hedging through debt denominated or issued in the foreign currency and hedging through foreign currency derivatives. These efforts, however, may not be effective and, in some cases, may expose Duke Energy to other risks that could negatively affect its cash flows and results of operations.
The costs of retiring Duke Energy Florida’s Crystal River Unit 3 could prove to be more extensive than is currently identified.
Costs to retire and decommission the plant could exceed estimates and, if not recoverable through the regulatory process, could adversely affect Duke Energy’s, Progress Energy’s and Duke Energy Florida’s financial condition, results of operations and cash flows.
Duke Energy Ohio’s and Duke Energy Indiana’s membership in an RTO presents risks that could have a material adverse effect on their results of operations, financial condition and cash flows.
The rules governing the various regional power markets may change, which could affect Duke Energy Ohio’s and Duke Energy Indiana’s costs and/or revenues. To the degree Duke Energy Ohio and Duke Energy Indiana incur significant additional fees and increased costs to participate in an RTO, their results of operations may be impacted. Duke Energy Ohio and Duke Energy Indiana may be allocated a portion of the cost of transmission facilities built by others due to changes in RTO transmission rate design. Duke Energy Ohio and Duke Energy Indiana may be required to expand their transmission system according to decisions made by an RTO rather than their own internal planning process. While RTO transmission rates were initially designed to be revenue neutral, various proposals and proceedings currently taking place by the FERC may cause transmission rates to change from time to time. In addition, RTOs have been developing rules associated with the allocation and methodology of assigning costs associated with improved transmission reliability, reduced transmission congestion and firm transmission rights that may have a financial impact on Duke Energy Ohio and Duke Energy Indiana.
As members of an RTO, Duke Energy Ohio and Duke Energy Indiana are subject to certain additional risks, including those associated with the allocation among RTO members, of losses caused by unreimbursed defaults of other participants in the RTO markets and those associated with complaint cases filed against an RTO that may seek refunds of revenues previously earned by RTO members.

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PART I

Nuclear Generation Risks
Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida may incur substantial costs and liabilities due to their ownership and operation of nuclear generating facilities.
Ownership interest in and operation of nuclear stations by Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida subject them to various risks. These risks include, among other things: the potential harmful effects on the environment and human health resulting from the current or past operation of nuclear facilities and the storage, handling and disposal of radioactive materials; limitations on the amounts and types of insurance commercially available to cover losses that might arise in connection with nuclear operations; and uncertainties with respect to the technological and financial aspects of decommissioning nuclear plants at the end of their licensed lives.
Ownership and operation of nuclear generation facilities requires compliance with licensing and safety-related requirements imposed by the NRC. In the event of non-compliance the NRC may increase regulatory oversight, impose fines and/or shut down a unit depending upon its assessment of the severity of the situation. Revised security and safety requirements promulgated by the NRC, which could be prompted by, among other things, events within or outside of the control of Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida, such as a serious nuclear incident at a facility owned by a third party,third-party, could necessitate substantial capital and other expenditures, as well as assessments to cover third-party losses. In addition, if a serious nuclear incident were to occur, it could have a material adverse effect on the results of operations, and financial condition, cash flows and reputation of the Duke Energy Registrants.
Liquidity, Capital Requirements and Common Stock Risks
The Duke Energy Registrants rely on access to short-term borrowings and longer-term capital markets to finance their capital requirements and support their liquidity needs. Access to those markets can be adversely affected by a number of conditions, many of which are beyond the Duke Energy Registrants’ control.
The Duke Energy Registrants’ businesses are to a large degreesignificantly financed through issuances of debt. The maturity and repayment profile of debt used to finance investments often does not correlate to cash flows from their assets. Accordingly, as a source of liquidity for capital requirements not satisfied by the cash flowflows from their operations and to fund investments originally financed through debt instruments with disparate maturities, the Duke Energy Registrants rely on access to short-term money markets as well as longer-term capital markets. The Subsidiary Registrants also rely on access to short-term intercompany borrowings. If the Duke Energy Registrants are not able to access capital at competitive rates or at all, the ability to finance their operations and implement their strategy and business plan as scheduled could be adversely affected. An inability to access capital may limit the Duke Energy Registrants’ ability to pursue improvements or acquisitions that they may otherwise rely on for future growth.

25


PART I

Market disruptions may increase the cost of borrowing or adversely affect the ability to access one or more financial markets. Such disruptions could include: economic downturns, the bankruptcy of an unrelated energy company, unfavorable capital market conditions, generally, market prices for electricity and gas, actual or threatened terrorist attacks, or the overall health of the energy industry. The availability of credit under Duke Energy’s Master Credit Facility depends upon the ability of the banks providing commitments under the facility to provide funds when their obligations to do so arise. Systematic risk of the banking system and the financial markets could prevent a bank from meeting its obligations under the facility agreement.
Duke Energy maintains a revolving credit facility to provide backup for its commercial paper program and letters of credit to support variable rate demand tax-exempt bonds that may be put to the Duke Energy Registrant issuer at the option of the holder. The facility includes borrowing sublimits for the Duke Energy Registrants, each of whom is a party to the credit facility, and financial covenants that limit the amount of debt that can be outstanding as a percentage of the total capital for the specific entity. Failure to maintain these covenants at a particular entity could preclude Duke Energy from issuing commercial paper or the Duke Energy Registrants from issuing letters of credit or borrowing under the Master Credit Facility.
The Duke Energy Registrants must meet credit quality standards and there is no assurance they will maintain investment grade credit ratings. If the Duke Energy Registrants are unable to maintain investment grade credit ratings, they would be required under credit agreements to provide collateral in the form of letters of credit or cash, which may materially adversely affect their liquidity.
Each of the Duke Energy Registrants’ senior long-term debt issuances is currently rated investment grade by various rating agencies. The Duke Energy Registrants cannot ensure their senior long-term debt will be rated investment grade in the future.
If the rating agencies were to rate the Duke Energy Registrants below investment grade, borrowing costs would increase, perhaps significantly. In addition, the potential pool of investors and funding sources would likely decrease. Further, if the short-term debt rating were to fall, access to the commercial paper market could be significantly limited.
A downgrade below investment grade could also require the posting of additional collateral in the form of letters of credit or cash under various credit, commodity and capacity agreements and trigger termination clauses in some interest rate derivative agreements, which would require cash payments. All of these events would likely reduce the Duke Energy Registrants’ liquidity and profitability and could have a material effect on their financial position, results of operations or cash flows.
Non-compliance with debt covenants or conditions could adversely affect the Duke Energy Registrants’ ability to execute future borrowings.
The Duke Energy Registrants’ debt and credit agreements contain various financial and other covenants. Failure to meet those covenants beyond applicable grace periods could result in accelerated due dates and/or termination of the agreements.

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PART I

Market performance and other changes may decrease the value of the NDTF investments of Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida, which then could require significant additional funding.
Ownership and operation of nuclear generation facilities also requires the maintenance of funded trusts that are intended to pay for the decommissioning costs of the respective nuclear power plants. The performance of the capital markets affects the values of the assets held in trust to satisfy these future obligations. Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida have significant obligations in this area and hold significant assets in these trusts. These assets are subject to market fluctuations and will yield uncertain returns, which may fall below projected rates of return. Although a number of factors impact funding requirements, a decline in the market value of the assets may increase the funding requirements of the obligations for decommissioning nuclear plants. If Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida are unable to successfully manage their NDTF assets, their financial condition, results of operations and cash flows could be negatively affected.
Poor investment performance of the Duke Energy pension plan holdings and other factors impacting pension plan costs could unfavorably impact the Duke Energy Registrants’ liquidity and results of operations.
The costs of providing non-contributory defined benefit pension plans are dependent upon a number of factors, such as the rates of return on plan assets, discount rates, the level of interest rates used to measure the required minimum funding levels of the plans, future government regulation and required or voluntary contributions made to the plans. The Subsidiary Registrants are allocated their proportionate share of the cost and obligations related to these plans. Without sustained growth in the pension investments over time to increase the value of plan assets and, depending upon the other factors impacting costs as listed above, Duke Energy could be required to fund its plans with significant amounts of cash. Such cash funding obligations, and the Subsidiary Registrants’ proportionate share of such cash funding obligations, could have a material impact on the Duke Energy Registrants’ financial position, results of operations or cash flows.
ITEM 1B. UNRESOLVED STAFF COMMENTS
 
None.

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PART I

ITEM 2. PROPERTIES
 
REGULATEDELECTRIC UTILITIES AND INFRASTRUCTURE
The following table provides information related to Regulated Utilities' electricthe Electric Utilities and Infrastructure's generation stations as of December 31, 2015.2016. The MW displayed in the table below are based on summer capacity. Ownership interest in all facilities is 100 percent unless otherwise indicated.
    Total MW
Owned MW
Ownership
FacilityPlant TypePrimary FuelLocationCapacity
Capacity
Interest (%)
Duke Energy Carolinas      
OconeeNuclearUraniumSC2,554
2,554
100
McGuireNuclearUraniumNC2,296
2,296
100
Catawba(a)
NuclearUraniumSC2,290
441
19.25
Belews CreekFossilCoalNC2,220
2,220
100
MarshallFossilCoalNC2,078
2,078
100
J.E. Rogers FossilCoalNC1,396
1,396
100
Lincoln Combustion Turbine (CT)FossilGas/OilNC1,267
1,267
100
AllenFossilCoalNC1,127
1,127
100
Rockingham CTFossilGas/OilNC825
825
100
Buck CCFossilGasNC668
668
100
Dan River Combined Cycle (CC)FossilGasNC638
638
100
Mill Creek CTFossilGas/OilSC596
596
100
W.S. LeeFossilGasSC170
170
100
W.S. Lee CTFossilGas/OilSC82
82
100
Bad CreekHydroWaterSC1,360
1,360
100
JocasseeHydroWaterSC780
780
100
Cowans FordHydroWaterNC325
325
100
KeoweeHydroWaterSC152
152
100
Other small facilities (25 plants)HydroWaterNC/SC666
666
100
Distributed generationRenewableSolarNC4
4
100
Total Duke Energy Carolinas   21,494
19,645
 
Owned MW
FacilityPlant TypePrimary FuelLocationCapacity
Duke Energy Carolinas
OconeeNuclearUraniumSC2,554
McGuireNuclearUraniumNC2,316
Catawba(a)
NuclearUraniumSC441
Belews CreekFossilCoalNC2,220
MarshallFossilCoalNC2,078
J.E. Rogers FossilCoalNC1,396
Lincoln Combustion Turbine (CT)FossilGas/OilNC1,267
AllenFossilCoalNC1,127
Rockingham CTFossilGas/OilNC825
Buck Combined Cycle (CC)FossilGasNC668
Dan River CCFossilGasNC651
Mill Creek CTFossilGas/OilSC596
W.S. LeeFossilGasSC170
W.S. Lee CTFossilGas/OilSC82
Bad CreekHydroWaterSC1,360
JocasseeHydroWaterSC780
Cowans FordHydroWaterNC325
KeoweeHydroWaterSC152
Other small facilities (25 plants)HydroWaterNC/SC666
Distributed generationRenewableSolarNC11
Total Duke Energy Carolinas19,685
    Total MW
Owned MW
Ownership
FacilityPlant TypePrimary FuelLocationCapacity
Capacity
Interest (%)
Duke Energy Progress      
BrunswickNuclearUraniumNC1,870
1,870
100
HarrisNuclearUraniumNC928
928
100
RobinsonNuclearUraniumSC741
741
100
RoxboroFossilCoalNC2,439
2,439
100
Smith CCFossilGas/OilNC1,088
1,088
100
H.F. Lee CCFossilGas/OilNC910
910
100
Wayne County CTFossilGas/OilNC863
863
100
Smith CTFossilGas/OilNC780
780
100
Darlington CTFossilGas/OilSC735
735
100
MayoFossilCoalNC727
727
100
L.V. Sutton CCFossilGas/OilNC622
622
100
AshevilleFossilCoalNC376
376
100
Asheville CTFossilGas/OilNC324
324
100
Weatherspoon CTFossilGas/OilNC128
128
100
L.V. Sutton CTFossilGas/OilNC61
61
100
Blewett CTFossilOilNC52
52
100
WaltersHydroWaterNC112
112
100
Other small facilities (3 plants)HydroWaterNC115
115
100
Distributed generationRenewableSolarNC44
44
100
Total Duke Energy Progress   12,915
12,915
 
Owned MW
FacilityPlant TypePrimary FuelLocationCapacity
Duke Energy Progress
BrunswickNuclearUraniumNC1,870
HarrisNuclearUraniumNC928
RobinsonNuclearUraniumSC741
RoxboroFossilCoalNC2,439
Smith CCFossilGas/OilNC1,088
H.F. Lee CCFossilGas/OilNC910
Wayne County CTFossilGas/OilNC863
Smith CTFossilGas/OilNC780
Darlington CTFossilGas/OilSC735
MayoFossilCoalNC727
L.V. Sutton CCFossilGas/OilNC622
AshevilleFossilCoalNC378
Asheville CTFossilGas/OilNC324
Weatherspoon CTFossilGas/OilNC128
L.V. Sutton CTFossilGas/OilNC61
Blewett CTFossilOilNC52
WaltersHydroWaterNC112
Other small facilities (3 plants)HydroWaterNC115
Distributed generationRenewableSolarNC62
Total Duke Energy Progress12,935

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PART I

    Total MW
Owned MW
Ownership
FacilityPlant TypePrimary FuelLocationCapacity
Capacity
Interest (%)
Duke Energy Florida      
Crystal RiverFossilCoalFL2,291
2,291
100
Hines CCFossilGas/OilFL1,912
1,912
100
Bartow CCFossilGas/OilFL1,105
1,105
100
AncloteFossilGasFL1,041
1,041
100
Intercession City CT(b)
FossilGas/OilFL984
984
(b)
DeBary CTFossilGas/OilFL637
637
100
Tiger Bay CCFossilGas/OilFL205
205
100
Bartow CTFossilGas/OilFL175
175
100
Bayboro CTFossilOilFL174
174
100
Suwannee River CTFossilGasFL155
155
100
Suwannee RiverFossilGas/OilFL128
128
100
Higgins CTFossilGas/OilFL109
109
100
Turner CTFossilOilFL79
79
100
Avon Park CTFossilGas/OilFL48
48
100
University of Florida CoGen CTFossilGasFL46
46
100
Rio Pinar CTFossilOilFL12
12
100
Total Duke Energy Florida   9,101
9,101
 
Owned MW
FacilityPlant TypePrimary FuelLocationCapacity
Duke Energy Florida
Crystal RiverFossilCoalFL2,291
Hines CCFossilGas/OilFL1,912
Bartow CCFossilGas/OilFL1,105
AncloteFossilGasFL1,041
Intercession City CTFossilGas/OilFL984
DeBary CTFossilGas/OilFL583
Tiger Bay CCFossilGas/OilFL205
Bartow CTFossilGas/OilFL175
Bayboro CTFossilOilFL174
Suwannee River CTFossilGasFL155
Higgins CTFossilGas/OilFL114
Avon Park CTFossilGas/OilFL50
University of Florida CoGen CTFossilGasFL46
Distributed generationRenewableSolarFL4
Total Duke Energy Florida8,839
    Total MW
Owned MW
Ownership
FacilityPlant TypePrimary FuelLocationCapacity
Capacity
Interest (%)
Duke Energy Ohio      
East BendFossilCoalKY600
600
100
Woodsdale CTFossilGas/PropaneOH462
462
100
Total Duke Energy Ohio   1,062
1,062
 
Owned MW
FacilityPlant TypePrimary FuelLocationCapacity
Duke Energy Ohio
East BendFossilCoalKY600
Woodsdale CTFossilGas/PropaneOH462
Total Duke Energy Ohio1,062
    Total MW
Owned MW
Ownership
FacilityPlant TypePrimary FuelLocationCapacity
Capacity
Interest (%)
Duke Energy Indiana      
Gibson(c)
FossilCoalIN3,132
2,822
90.10
Cayuga(d)
FossilCoal/OilIN1,005
1,005
100
Wabash River(e)
FossilCoal/OilIN676
676
100
EdwardsportFossilCoalIN595
595
100
Madison CTFossilGasOH576
576
100
Vermillion CT(f)
FossilGasIN568
355
62.50
Wheatland CTFossilGasIN460
460
100
Noblesville CCFossilGas/OilIN285
285
100
GallagherFossilCoalIN280
280
100
Henry County CTFossilGas/OilIN129
129
100
Cayuga CTFossilGas/OilIN99
99
100
Connersville CTFossilOilIN86
86
100
Miami Wabash CTFossilOilIN80
80
100
MarklandHydroWaterIN45
45
100
Total Duke Energy Indiana   8,016
7,493
 
Owned MW
FacilityPlant TypePrimary FuelLocationCapacity
Duke Energy Indiana
Gibson(b)
FossilCoalIN2,822
Cayuga(c)
FossilCoal/OilIN1,005
EdwardsportFossilCoalIN595
Madison CTFossilGasOH576
Vermillion CT(d)
FossilGasIN355
Wheatland CTFossilGasIN460
Noblesville CCFossilGas/OilIN285
GallagherFossilCoalIN280
Henry County CTFossilGas/OilIN129
Cayuga CTFossilGas/OilIN99
Connersville CTFossilOilIN86
Miami Wabash CTFossilOilIN80
MarklandHydroWaterIN45
Total Duke Energy Indiana6,817
Owned MW
Totals by TypeCapacity
Total Electric Utilities49,338
Totals By Plant Type
Nuclear8,850
Fossil36,856
Hydro3,555
Renewable77
Total Electric Utilities49,338

2831


PART I

    Total MW
Owned MW
Ownership
FacilityPlant TypePrimary FuelLocationCapacity
Capacity
Interest (%)
Total Regulated Utilities   52,588
50,216
 
Totals By Plant Type      
Nuclear   10,679
8,830
 
Fossil   38,306
37,783
 
Hydro   3,555
3,555
 
Renewable   48
48
 
Total Regulated Utilities   52,588
50,216
 
(a)Jointly owned with North Carolina Municipal Power Agency Number 1, North Carolina Electric Membership Corporation and Piedmont Municipal Power Agency. Duke Energy Carolinas' ownership is 19.25 percent of the facility.
(b)Duke Energy Florida owns and operates Intercession City Station Units 1-10 and 12-14. Unit 11 is jointly owned with Georgia Power Company (GPC). GPC has the exclusive right to the output of this unit during the months of June through September. Duke Energy Florida has the exclusive right to the output of this unit for the remainder of the year. Duke Energy Florida has executed an agreement to purchase Georgia Power Company's interest in these facilities.
(c)Duke Energy Indiana owns and operates Gibson Station Units 1-41 through 4 and owns 50.05 percentis a joint owner of and operates, unit 5. Unit 5 is jointly owned with Wabash Valley Power Association, Inc. (WVPA) and Indiana Municipal Power Agency. Duke Energy Indiana operates unit 5 and owns 50.05 percent.
(d)(c)     Includes Cayuga Internal Combustion (IC).Combustion.
(e)    Includes Wabash River IC.
(f)(d)    Jointly owned with Wabash Valley Power Association.WVPA. Duke Energy Indiana's ownership is 62.5 percent of the facility.
The following table provides information related to Regulated Utilities'Electric Utilities and Infrastructure's electric transmission and distribution properties as of December 31, 2015.2016.
Duke
Duke
Duke
Duke
Duke
Duke
 Duke
Duke
Duke
Duke
Duke
Energy
Energy
Energy
Energy
Energy
Energy
Duke
Energy
Energy
Energy
Energy
Energy
Carolinas
Progress
Florida
Ohio
Indiana
Utilities
Energy
Carolinas
Progress
Florida
Ohio
Indiana
Electric Transmission Lines  
Miles of 500 to 525 Kilovolt (kV)600
300
200


1,100
Miles of 500 to 525 kilovolt (kV)1,100
600
300
200


Miles of 345 kV


1,000
700
1,700
1,700



1,000
700
Miles of 230 kV2,600
3,400
1,700

700
8,400
8,500
2,700
3,400
1,700

700
Miles of 100 to 161 kV6,800
2,600
1,000
700
1,400
12,500
12,500
6,800
2,600
1,000
700
1,400
Miles of 13 to 69 kV3,100

2,300
700
2,500
8,600
8,400
3,000

2,300
700
2,400
Total conductor miles of electric transmission lines13,100
6,300
5,200
2,400
5,300
32,300
32,200
13,100
6,300
5,200
2,400
5,200
Electric Distribution Lines  
Miles of overhead lines66,600
44,100
24,200
13,800
22,400
171,100
172,300
66,600
45,000
24,600
13,700
22,400
Miles of underground line36,500
23,700
18,200
5,800
8,600
92,800
96,400
37,100
24,600
20,000
5,900
8,800
Total conductor miles of electric distribution lines103,100
67,800
42,400
19,600
31,000
263,900
268,700
103,700
69,600
44,600
19,600
31,200
Number of electric transmission and distribution substations1,500
500
500
300
500
3,300
3,300
1,500
500
500
300
500
Miles of gas mains


7,200

7,200
Miles of gas service lines


5,800

5,800
Substantially all of Regulated Utilities'Electric Utilities and Infrastructure's electric plant in service is mortgaged under indentures relating to Duke Energy Carolinas’, Duke Energy Progress', Duke Energy Florida's, Duke Energy Ohio’s and Duke Energy Indiana’s various series of First Mortgage Bonds.
GAS UTILITIES AND INFRASTRUCTURE
Gas Utilities and Infrastructure owns transmission pipelines and distribution mains that are generally underground, located near public streets and highways, or on property owned by others for which Duke Energy Ohio and Piedmont have obtained the necessary legal rights to place and operate facilities on such property located within the Gas Utilities and Infrastructure service territories. The following table provides information related to Gas Utilities and Infrastructure's gas distribution as of December 31, 2016.
  Duke
 Duke
Energy
 Energy
Ohio
Miles of gas distribution and transmission pipelines32,900
7,200
Miles of gas service lines26,600
6,200

2932


PART I

INTERNATIONAL ENERGYCOMMERCIAL RENEWABLES
The following table provides additional information related to International Energy’sCommercial Renewables' electric generation stationsfacilities as of December 31, 2015.2016. The MW displayed in the table below are based on summer capacity. Ownership interest in all facilities is 100 percent unless otherwise indicated.
   Total MW
Owned MW
Ownership
 Primary FuelLocationCapacity
Capacity
Interest (%)
DEI BrazilWaterBrazil2,274
2,087
92
DEI ArgentinaWater/GasArgentina576
523
91
DEI Peru – EgenorWaterPeru352
352
100
DEI Peru – AguaytiaGasPeru192
192
100
DEI ChileWater/DieselChile362
362
100
DEI GuatemalaOil/Diesel/CoalGuatemala361
361
100
DEI El SalvadorOil/DieselEl Salvador324
293
90
DEI EcuadorDieselEcuador192
163
85
Total International Energy  4,633
4,333
 
Owned MW
FacilityPlant TypePrimary FuelLocationCapacity
Duke Energy Renewables – Wind
Los Vientos WindpowerRenewableWindTX912
Top of the WorldRenewableWindWY200
FrontierRenewableWindOK200
NotreesRenewableWindTX153
Campbell HillRenewableWindWY99
North AlleghenyRenewableWindPA70
Laurel Hill Wind EnergyRenewableWindPA69
OcotilloRenewableWindTX59
Kit CarsonRenewableWindCO51
Silver SageRenewableWindWY42
Happy JackRenewableWindWY29
ShirleyRenewableWindWI20
Sweetwater IV(a)
RenewableWindTX113
Sweetwater V(a)
RenewableWindTX38
Ironwood(a)
RenewableWindKS84
Cimarron II(a)
RenewableWindKS66
Mesquite Creek(a)
RenewableWindTX106
Total Renewables – Wind2,311
Duke Energy Renewables – Solar
Conetoe IIRenewableSolarNC80
Seville I & IIRenewableSolarCA50
Rio Bravo I & IIRenewableSolarCA40
CaprockRenewableSolarNM25
KelfordRenewableSolarNC22
HighlanderRenewableSolarCA21
DogwoodRenewableSolarNC20
Halifax AirportRenewableSolarNC20
PasquotankRenewableSolarNC20
PumpjackRenewableSolarCA20
WildwoodRenewableSolarCA20
ShawboroRenewableSolarNC20
LongboatRenewableSolarCA20
BagdadRenewableSolarAZ15
TX SolarRenewableSolarTX14
Creswell AlligoodRenewableSolarNC14
VictoryRenewableSolarCO13
Washington White PostRenewableSolarNC12
WhitakersRenewableSolarNC12
Other small solarRenewableSolarVarious125
Total Renewables – Solar583
Total Commercial Renewables2,894
International(a) Commercial Renewables owns 47 percent of Sweetwater IV and V and 50 percent of Ironwood, Cimarron II and Mesquite Creek.
OTHER
Duke Energy owns approximately 8 million square feet and leases 2.3 million square feet of corporate, regional and district office space spread throughout its service territories.
Duke Energy also owns a 25 percent equity interest in NMC. In 2015,2016, NMC produced approximately 890,000765,000 metric tons of methanol and approximately 1.0 million974,000 metric tons of MTBE. Approximately 40 percent of methanol is normally used in the MTBE production.

3033


PART I

COMMERCIAL PORTFOLIO
The following table provides information related to Commercial Portfolio’s electric generation facilities as of December 31, 2015. The MW displayed in the table below are based on summer capacity.
    Total MW
Owned MW
Ownership
FacilityPlant TypePrimary FuelLocationCapacity
Capacity
Interest (%)
Duke Energy Renewables – Wind      
Los Vientos WindpowerRenewableWindTX712
712
100
Top of the WorldRenewableWindWY200
200
100
NotreesRenewableWindTX153
153
100
Campbell HillRenewableWindWY99
99
100
North AlleghenyRenewableWindPA70
70
100
Laurel Hill Wind EnergyRenewableWindPA69
69
100
OcotilloRenewableWindTX59
59
100
Kit CarsonRenewableWindCO51
51
100
Silver SageRenewableWindWY42
42
100
Happy JackRenewableWindWY29
29
100
ShirleyRenewableWindWI20
20
100
Sweetwater IRenewableWindTX38
19
50
Sweetwater IIRenewableWindTX91
45
50
Sweetwater IIIRenewableWindTX135
67
50
Sweetwater IVRenewableWindTX241
113
47
Sweetwater VRenewableWindTX80
38
47
IronwoodRenewableWindKS168
84
50
Cimarron IIRenewableWindKS131
66
50
Mesquite CreekRenewableWindTX211
106
50
Total Renewables – Wind   2,599
2,042
 
Duke Energy Renewables – Solar      
Conetoe IIRenewableSolarNC80
80
100
SevilleRenewableSolarCA50
50
100
KelfordRenewableSolarNC22
22
100
HighlanderRenewableSolarCA21
21
100
DogwoodRenewableSolarNC20
20
100
Halifax AirportRenewableSolarNC20
20
100
PasquotankRenewableSolarNC20
20
100
PumpjackRenewableSolarCA20
20
100
WildwoodRenewableSolarCA20
20
100
ShawboroRenewableSolarNC20
20
100
BagdadRenewableSolarAZ15
15
100
TX SolarRenewableSolarTX14
14
100
Creswell AlligoodRenewableSolarNC14
14
100
Washington White PostRenewableSolarNC12
12
100
WhitakersRenewableSolarNC12
12
100
Other small solarRenewableSolarVarious79
79
100
Total Renewables – Solar   439
439
 
Total Commercial Portfolio   3,038
2,481
 
OTHER
Duke Energy owns approximately 5.2 million square feet and leases 2.9 million square feet of corporate, regional and district office space spread throughout its service territories and in Houston, Texas.
ITEM 3. LEGAL PROCEEDINGS
 
For information regarding legal proceedings, including regulatory and environmental matters, see Note 4, “Regulatory Matters,” and Note 5, “Commitments and Contingencies,” to the Consolidated Financial Statements.

31


PART I

Virginia Department of Environmental Quality Civil Enforcement
In June 2015, the Virginia State Water Control Board voted to approve a consent order to resolve the civil enforcement claim of the Virginia Department of Environmental Quality (VDEQ) against Duke Energy Carolinas related to the February 2014 Dan River coal ash release. Pursuant to the terms of the $2.5 million settlement, Duke Energy Carolinas is required to perform $2.25 million of environmental projects that benefit Virginia communities and fund an additional $250,000 for VDEQ to respond to environmental emergencies. Failure to perform sufficient environmental projects will require Duke Energy Carolinas to make a cash payment in the amount of the shortfall.
MTBE Litigation
On June 29, 2007,19, 2014, the New Jersey DepartmentCommonwealth of Environmental Protection (NJDEP)Pennsylvania filed suit against, among others, Duke Energy Merchants, (DEM), alleging contamination of “waters of the state” by MTBE from leaking gasoline storage tanks. MTBE is a gasoline additive intended to increase the oxygen level in gasoline and make it burn cleaner. The case was moved to federal court and consolidated in an existing multidistrict litigation docket of pending MTBE cases. DEM and NJDEP have reached an agreement in principle to settle the case for a payment by DEM of $1.7 million. On February 19, 2016, the Court approved a Consent Decree executed by the parties which settles the case.
DEM is also a defendant in a similar case filed by the Commonwealth of Pennsylvania on June 19, 2014. That case has also been moved to the consolidated multidistrict proceeding. Discovery in this case continues.
Brazilian Transmission Fee Assessments
On July 16, 2008, Duke Energy International Geracao Paranapanema S.A. (DEIGP) filed a lawsuit in the Brazilian federal court challenging transmission fee assessments imposed under two new resolutions promulgated by the Brazilian electricity regulatory agency (ANEEL) (collectively, the Resolutions). The Resolutions purport to impose additional transmission fees on generation companies located in the State of Sao Paulo for utilization of the electric transmission system. The fees were retroactive to July 1, 2004, and effective through June 30, 2009. DEIGP's original assessment under these Resolutions amounts to approximately $43 million inclusive of interest through December 2015. Pending resolution of this dispute on the merits, DEIGP deposited the disputed portion, approximately $15 million, of the assessment into a court-monitored escrow, and paid the undisputed portion to the distribution companies. In a decision published on October 2, 2013, the trial court affirmed an additional fine imposed by ANEEL in the amount of approximately $7 million for DEIGP’s failure to pay the disputed portion of the assessment. The $7 million was also deposited into a court-monitored escrow. In December 2014, the trial court ruled in favor of DEIGP on the merits of the original assessment. The merits of the original assessment and fine, as well as the contradiction between the trial court's ruling in favor of DEIGP on the original assessment but against DEIGP on its alleged failure to timely pay that assessment are being addressed on appeal.
Brazilian Regulatory Citations
In September 2007, the State Environmental Agency of Parana (IAP) assessed seven fines against DEIGP for failure to comply with reforestation measures allegedly required by state regulations in Brazil. DEIGP has challenged the fines in administrative and judicial proceedings. Two of the seven fines have subsequently been dismissed or otherwise resolved in favor of DEIGP. A third fine was determined legitimate by the trial court, but is under appeal. The remaining fines are pending. The total current amount of the IAP fines is approximately $10 million.
Additionally, DEIGP was assessed three fines by Brazil Institute of Environment and Renewable Natural Resources (IBAMA) for improper maintenance of existing reforested areas. One of these fines was determined legitimate by the trial court and is under appeal. The others are pending. The total current IBAMA assessment is approximately $400,000. DEIGP believes that it has properly maintained all reforested areas and has challenged the IBAMA assessments.
ITEM 4. MINE SAFETY DISCLOSURES
 
This is not applicable for any of the Duke Energy Registrants.

3234


PART II

 
ITEM 5. MARKET FOR REGISTRANT'S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES
 
The common stock of Duke Energy is listed and traded on the NYSENew York Stock Exchange (NYSE) (ticker symbol DUK). As of January 31, 2016,2017, there were 166,231165,640 Duke Energy common stockholders of record.
There is no market for common stock of the Subsidiary Registrants, all of which is owned by Duke Energy.
Common Stock Data by Quarter
The following chart provides Duke Energy common stock trading prices as reported on the New York Stock ExchangeNYSE and information on common stock dividends declared. Stock prices represent the intra-day high and low stock price.
Duke Energy expects to continue its policy of paying regular cash dividends; however, there is no assurance as to the amount of future dividends as they depend on future earnings, capital requirements and financial condition, and are subject to declaration by the Duke Energy Board of Directors.
Duke Energy’s operating subsidiaries have certain restrictions on their ability to transfer funds in the form of dividends or loans to Duke Energy. See Note 4 to the Consolidated Financial Statements, “Regulatory Matters” for further information regarding these restrictions.
Securities Authorized for Issuance Under Equity Compensation Plans
 
Duke Energy will provideSee Item 12 of Part III within this Annual Report for information that is responsive to this Item 5 in its definitive proxy statement or in an amendment to this annual report not later than 120 days after the end of the fiscal year covered by this annual report, in either case under the caption “Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters,” and possibly elsewhere therein. That information is incorporated in this Item 5 by reference.regarding Securities Authorized for Issuance Under Equity Compensation Plans.
Issuer Purchases of Equity Securities for Fourth Quarter 20152016
 
There were no repurchases of equity securities during the fourth quarter of 2015.2016.

3335


PART II

Stock Performance Graph
 
The following performance graph compares the cumulative total shareholder return from Duke Energy Corporation common stock, as compared with the Standard & Poor's 500 Stock Index (S&P 500) and the Philadelphia Utility Sector Index (Philadelphia Utility Index) for the past five years. The graph assumes an initial investment of $100 on December 31, 2010,2011, in Duke Energy common stock, in the S&P 500 and in the Philadelphia Utility Index and that all dividends were reinvested. The stockholder return shown below for the five-year historical period may not be indicative of future performance.
NYSE CEO Certification
 
Duke Energy has filed the certification of its Chief Executive Officer and Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 as exhibits to this Annual Report on Form 10-K for the year ended December 31, 2015.2016.

3436


PART II

ITEM 6. SELECTED FINANCIAL DATA
 
The following table provides selected financial data for the years of 20112012 through 2015.2016.
(in millions, except per share amounts)2015
 2014
 2013
 2012
 2011
(in millions, except per-share amounts)2016
 
2015(a)

 
2014(a)

 
2013(a)

 
2012(a)

Statement of Operations(a)(b)
                  
Total operating revenues$23,459
 $23,925
 $22,756
 $17,912
 $12,412
$22,743
 $22,371
 $22,509
 $21,211
 $16,363
Operating income5,367
 5,258
 4,854
 2,911
 2,475
5,341
 5,078
 4,842
 4,305
 2,403
Income from continuing operations2,811
 2,465
 2,590
 1,611
 1,508
2,578
 2,654
 2,538
 2,278
 1,289
Income (loss) from discontinued operations, net of tax20
 (576) 86
 171
 206
(Loss) Income from discontinued operations, net of tax(408) 177
 (649) 398
 493
Net income2,831
 1,889
 2,676
 1,782
 1,714
2,170
 2,831
 1,889
 2,676
 1,782
Net income attributable to Duke Energy Corporation2,816
 1,883
 2,665
 1,768
 1,706
2,152
 2,816
 1,883
 2,665
 1,768
Common Stock Data                  
Income from continuing operations attributable to Duke Energy Corporation common stockholders(b)(c)
                  
Basic$4.02
 $3.46
 $3.64
 $2.77
 $3.34
$3.71
 $3.80
 $3.58
 $3.21
 $2.23
Diluted4.02
 3.46
 3.63
 2.77
 3.34
3.71
 3.80
 3.58
 3.21
 2.23
Income (loss) from discontinued operations attributable to Duke Energy Corporation common stockholders(b)
         
(Loss) Income from discontinued operations attributable to Duke Energy Corporation common stockholders(c)
         
Basic$0.03
 $(0.80) $0.13
 $0.30
 $0.49
$(0.60) $0.25
 $(0.92) $0.56
 $0.84
Diluted0.03
 (0.80) 0.13
 0.30
 0.49
(0.60) 0.25
 (0.92) 0.55
 0.84
Net income attributable to Duke Energy Corporation common stockholders(b)(c)
                  
Basic$4.05
 $2.66
 $3.77
 $3.07
 $3.83
$3.11
 $4.05
 $2.66
 $3.77
 $3.07
Diluted4.05
 2.66
 3.76
 3.07
 3.83
3.11
 4.05
 2.66
 3.76
 3.07
Dividends declared per share of common stock(b)(c)
3.24
 3.15
 3.09
 3.03
 2.97
3.36
 3.24
 3.15
 3.09
 3.03
Balance Sheet                  
Total assets(c)
$120,976
 $120,557
 $114,779
 $113,856
 $62,526
$132,761
 $121,156
 $120,557
 $114,779
 $113,856
Long-term debt including capital leases and redeemable preferred stock of subsidiaries, less current maturities(c)
37,495
 37,061
 38,152
 36,444
 18,679
Long-Term debt including capital leases, less current maturities45,576
 36,842
 36,075
 37,065
 35,512
(a)Prior year data has been recast to reflect the classification of the International Disposal Group as discontinued operations.
(b)Significant transactions reflected in the results above include: (i) 2014 impairmentthe sale of the International Disposal Group in 2016, including a loss on sale recorded within discontinued operations (see Note 2 to the Consolidated Financial Statements, "Acquisitions“Acquisitions and Dispositions"Dispositions”) (ii) the acquisition of Piedmont in 2016, including losses on interest rate swaps related to the acquisition financing (see Note 2); (ii)(iii) 2014 impairment of the Midwest Disposal Group (see Note 2); (iv) 2014 incremental tax expense resulting from the decision to repatriate all cumulative historical undistributed foreign earnings (see Note 22, to the Consolidated Financial Statements, "Income Taxes"); (iii)(v) 2014 increase in the litigation reserve related to the criminal investigation of the Dan River coal ash release (see Note 5, to the Consolidated Financial Statements, “Commitments and Contingencies”); (iv)(vi) 2013 pretax charges of $360 million related to Crystal River Unit 3 and nuclear development costs (see Note 4 to the Consolidated Financial Statements, "Regulatory Matters"); (v)costs; (vii) the 2012 merger with Progress Energy; (vi)(viii) costs to achieve mergers in 2016, 2015, 2014, 2013 2012 and 2011;2012; and (vii)(ix) 2012 and 2011 pretax impairment and other charges related to the Edwardsport Integrated Gasification Combined Cycle (IGCC) project of $628 million and $222 million, respectively.million.
(b)(c)On July 2, 2012, immediately prior to the merger with Progress Energy, Duke Energy executed a one-for-three reverse stock split. All share and earnings per share amounts are presented as if the one-for-three reverse stock split had been effective at the beginning of the earliest period presented.
(c)During 2015, Duke Energy adopted new accounting guidance related to the presentation of debt issuance costs on the balance sheet. As a result of the adoption, Total Assets and Long-term debt including capital leases and redeemable preferred stock of subsidiaries, less current maturities were recasted to conform to the new presentation. The impact to 2013, 2012 and 2011 was not material. See Note 1 to the Consolidated Financial Statements, "Summary of Significant Accounting Policies," for additional information related the new accounting standard.

3537


PART II

ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
 
Management’s Discussion and Analysis includes financial information prepared in accordance with generally accepted accounting principles (GAAP) in the United States (U.S.), as well as certain non-GAAP financial measures such as adjusted earnings and adjusted earnings per share and adjusted segment income, discussed below. Generally, a non-GAAP financial measure is a numerical measure of financial performance, financial position or cash flows that excludes (or includes) amounts that are included in (or excluded from) the most directly comparable measure calculated and presented in accordance with GAAP. The non-GAAP financial measures should be viewed as a supplement to, and not a substitute for, financial measures presented in accordance with GAAP. Non-GAAP measures as presented herein may not be comparable to similarly titled measures used by other companies.
The following combined Management’s Discussion and Analysis of Financial Condition and Results of Operations is separately filed by Duke Energy Corporation (collectively with its subsidiaries, Duke Energy) and its subsidiaries Duke Energy Carolinas, LLC (Duke Energy Carolinas), Progress Energy, Inc. (Progress Energy), Duke Energy Progress, LLC (formerly Duke Energy Progress, Inc.) (Duke Energy Progress), Duke Energy Florida, LLC (formerly Duke Energy Florida, Inc.) (Duke Energy Florida), Duke Energy Ohio, Inc. (Duke Energy Ohio) and Duke Energy Indiana, LLC (formerly Duke Energy Indiana, Inc.) (Duke Energy Indiana) (collectively referred to as the Subsidiary Registrants). However, none of the registrants makesmake any representation as to information related solely to Duke Energy or the Subsidiary Registrantssubsidiary registrants of Duke Energy other than itself. Subsequent to Duke Energy's acquisition of Piedmont Natural Gas Company, Inc. (Piedmont) on October 3, 2016, Piedmont is a wholly owned subsidiary of Duke Energy. The financial information for Duke Energy includes results of Piedmont subsequent to October 3, 2016. See Note 2 to the Consolidated Financial Statements, "Acquisitions and Dispositions," for additional information regarding the acquisition.
DUKE ENERGY
Duke Energy is an energy company headquartered in Charlotte, North Carolina. Duke Energy operates in the U.S. primarily through its wholly owned subsidiaries, Duke Energy Carolinas, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, and Duke Energy Indiana as well as in Latin America.
and Piedmont. When discussing Duke Energy’s consolidated financial information, it necessarily includes the results of the Subsidiary Registrants, which, along with Duke Energy, are collectively referred to as the Duke Energy Registrants.
Management’s Discussion and Analysis should be read in conjunction with the Consolidated Financial Statements and Notes for the years ended December 31, 2016, 2015 2014 and 2013.2014.
Executive Overview
Acquisition of Piedmont Natural Gas
On October 24, 2015,3, 2016, Duke Energy entered into an Agreement and Plancompleted the acquisition of Merger (Merger Agreement) with Piedmont, Natural Gas Company, Inc., (Piedmont) a North Carolina corporation. Undercorporation primarily engaged in regulated natural gas distribution to residential, commercial, industrial and power generation customers in portions of North Carolina, South Carolina and Tennessee. Piedmont is also invested in joint-venture, energy-related businesses, including regulated interstate natural gas transportation and storage and regulated intrastate natural gas transportation. The acquisition provides a foundation for Duke Energy to establish a broader, long-term strategic natural gas infrastructure platform to complement its existing natural gas pipeline investments and regulated natural gas business in the termsMidwest. Cost savings, efficiencies and other benefits are expected from combined operations.
Duke Energy acquired all of Piedmont's outstanding common stock for a total cash purchase price of $5.0 billion and assumed Piedmont's existing long-term debt, which had an estimated fair value of approximately $2.0 billion at the time of the Merger Agreement, acquisition. The excess of the purchase price over the estimated fair value of Piedmont's assets and liabilities on the acquisition date was recorded as goodwill. The transaction resulted in incremental goodwill of approximately $3.4 billion.
Duke Energy will acquire Piedmont for approximately $4.9 billion in cash. Upon closing, Piedmont will become a wholly owned subsidiary of Duke Energy.
Pursuant to the Merger Agreement, upon the closing of the merger, each share of Piedmont common stock issued and outstanding immediately prior to the closing will be converted automatically into the right to receive $60 in cash per share. In addition, Duke Energy will assume Piedmont's existing debt, which was approximately $1.9 billion at October 31, 2015, the end of Piedmont's most recent fiscal year. Duke Energy expects to financefinanced the transaction with a combination of debt, between $500 million and $750 million of newly issued equity issuances and other cash sources.
In connection with the Merger Agreement with Piedmont, Duke Energy entered into a $4.9 billion senior unsecured bridge financing facility (Bridge Facility) with Barclays Capital, Inc. (Barclays). The Bridge Facility, if drawn upon, may be used Financings to (i) fund the cash consideration for the transaction and (ii) pay certain fees and expensesincluded $3.75 billion of long-term debt issued in connection with the transaction. In November 2015, Barclays syndicated its commitmentAugust 2016, $750 million borrowed under the Bridge Facility to a broader group of lenders. Duke Energy intends to finance the transaction with proceeds raised throughshort-term loan facility (Term Loan) in September 2016, as well as the issuance of debt, equity and other sources as noted above and, therefore, does not expect to draw upon the Bridge Facility.
10.6 million shares of common stock in October 2016. The Federal Trade Commission (FTC) has granted early terminationshare issuance resulted in net cash proceeds of the 30-day waiting period under the federal Hart-Scott-Rodino Antitrust Improvements Act of 1976. On January 22, 2016, shareholders of Piedmont Natural Gas approved the company's acquisition by Duke Energy. On January 15, 2016, Duke Energy filed for approval of the transaction and associated financing requests with the NCUC. On January 29, 2016, the NCUC approved the financing requests. On January 15, 2016, Duke Energy and Piedmont filed a joint request with the Tennessee Regulatory Authority for approval of a change in control of Piedmont that will result from Duke Energy's acquisition of Piedmont. In that request, Duke Energy and Piedmont requested that the Authority approve the change in control on or before April 30, 2016. Subject to receipt of required regulatory approvals and meeting closing conditions, Duke Energy and Piedmont target a closing by the end of 2016.
On December 11, 2015, Duke Energy Kentucky filed a declaratory request with the KPSC seeking a finding that the transaction does not constitute a change in control of Duke Energy Kentucky requiring KPSC approval. Duke Energy also presented the transaction for information before the PSCSC on January 13, 2016.
The Merger Agreement contains certain termination rights for both Duke Energy and Piedmont, and provides that, upon termination of the Merger Agreement under specified circumstances, Duke Energy would be required to pay a termination fee of $250 million to Piedmont and Piedmont would be required to pay Duke Energy a termination fee of $125approximately $723 million.
See Note 46 to the Consolidated Financial Statements, Regulatory Matters,"Debt and Credit Facilities," for additional information regarding Duke Energyrelated to the debt issuance and Piedmont's joint investment in Atlantic Coast Pipeline, LLC.

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Midwest Generation ExitNote 18, "Common Stock," for additional information related to the equity issuance.
Duke Energy through indirect subsidiaries, completedrecorded pretax non-recurring transaction and integration costs associated with the saleacquisition of $439 million in 2016, including interest expense of $234 million related to the nonregulated Midwest generation businessacquisition financing. The interest expense primarily relates to losses on forward-starting interest rate swaps. The remaining charges include commitments made in conjunction with the transaction, such as charitable contributions and a one-time bill credit to Piedmont customers, as well as professional fees and severance. Duke Energy Retail Sales LLC (collectively, the Disposal Group)also expects to a subsidiary of Dynegy on April 2, 2015, for approximately $2.8 billion in cash. Referincur system integration and other acquisition-related transition costs, primarily through 2018, that are necessary to achieve certain anticipated cost savings, efficiencies and other benefits.
See Note 2 to the Consolidated Financial Statements, “Acquisitions"Acquisitions and Dispositions," for additional information on thisregarding the transaction.
Accelerated Stock Repurchase ProgramSale of International Energy
On April 6, 2015,In February 2016, Duke Energy entered intoannounced it had initiated a process to divest its Latin American generation businesses and, in October 2016, reached agreements with eachto sell the businesses in two separate transactions for a combined enterprise value of Goldman, Sachs & Co. and JPMorgan Chase Bank, National Association (the Dealers) to repurchase a total$2.4 billion. Both deals closed ahead of $1.5 billion ofschedule in December 2016. Duke Energy common stock under an accelerated stock repurchase program (the ASR).sold its Brazilian business to China Three Gorges for approximately $1.2 billion, including the assumption of debt, and its remaining Central and South American businesses to I Squared Capital in a deal also valued at approximately $1.2 billion. The transactions generated cash proceeds of $1.9 billion, excluding transaction costs, which were primarily used to reduce Duke Energy made payments of $750 million to eachholding company debt. Existing favorable tax attributes result in no immediate U.S. federal-level cash tax impacts.
As a result of the Dealerstransactions, the International Energy Disposal Group was classified as held for sale and was delivered 16.6 million shares,as discontinued operations in the fourth quarter of 2016.

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In conjunction with a total fair valuethe advancement of $1.275 billion, which represented approximately 85 percentmarketing efforts, in the second quarter of 2016 Duke Energy performed recoverability tests of the total numberasset groups of sharesthe International Disposal Group, and as a result recorded an after-tax impairment charge of $145 million related to certain assets in Central America. In the fourth quarter of 2016, Duke Energy common stock expected to be repurchased underrecorded an after-tax loss on disposal of $640 million, which includes the ASR. The $225 million unsettled portion met the criteria to be accounted for as a forward contract indexed to Duke Energy's stock and qualified as an equity instrument. The company recorded the $1.5 billion payment as a reduction to common stock asrecognition of April 6, 2015. In June 2015, the Dealers delivered 3.2 million additional shares to Duke Energy to complete the ASR. Approximately 19.8 million shares, in total, were delivered to Duke Energy and retired under the ASR at an average pricecumulative foreign currency translation losses of $75.75 per share. The final number$620 million. Both charges are included within Loss from Discontinued Operations, net of shares repurchased was based upon the average of the daily volume weighted average stock prices of Duke Energy’s common stock during the term of the program, less a discount.
For additional informationtax on the detailsConsolidated Statements of this transaction, seeOperations for the year ended December 31, 2016. See Note 182 to the Consolidated Financial Statements, “Common Stock.”"Acquisitions and Dispositions" for additional information.
Financial Results
(a)See Results of Operations below for Duke Energy’s definition of adjusted earnings and adjusted diluted earnings per share as well as a reconciliation of this non-GAAP financial measure to net income attributable to Duke Energy and net income attributable to Duke Energy per diluted share.
Adjusted2016 GAAP reported earnings decreased from 2014were impacted by charges related to 2015 primarily due to lower earnings atthe International Energy as a result of unfavorable hydrology and changes in foreign currency exchange rates, partially offset by improved earnings at Regulated Utilities from improved retail pricing and wholesale margins net of higher operations and maintenance expense.
Adjusted earnings increased from 2013sale described above, which were recorded to 2014 primarily due to the impact of revised rates and favorable weather, partially offset by higher depreciation and amortization expense.
discontinued operations. See “Results of Operations” below for a detailed discussion of the consolidated results of operations, as well as a detailed discussion of financial results for each of Duke Energy’s reportable business segments, as well as Other.
20152016 Areas of Focus and Accomplishments
In 2015, Duke Energy advanced a number of important strategic initiatives to transform theits energy future with a focus on customers, employees, operations and growth. Duke Energy announcedThe company has responded to an environment of changing customer demands, investing in electric and gas infrastructure that customers value and that provide an opportunity for sustainable growth.
Portfolio Transition. With the acquisition of Piedmont completed the purchase of North Carolina Eastern Municipal Power Agency's (NCEMPA) generation assets, completedand the sale of the nonregulated Midwest Generation business and executed on the coal ash strategy to continue moving towards ash basin closures.International Energy, Duke Energy also accomplished industry-leading safety and environmental performance and increased the growth rate of the dividend,completed a significant component of the investor value proposition.
Acquisition ofmulti-year portfolio transition. The Piedmont Natural Gas. In 2015, Duke Energy entered into a Merger Agreement with Piedmont, under which Duke Energy will acquire Piedmont for $4.9 billion in cash. This acquisition reflects the growing importance of natural gas to the future of the energy infrastructure within the company's service territory and throughout the U.S., and establishes a strategic platform for future growth in natural gas infrastructure. Duke Energy's exit of the Latin American market results in a portfolio of domestic electric and gas infrastructure businesses with a lower risk profile and enhances the ability to generate more consistent earnings and cash flows over time.
Operational Excellence. Duke Energy continues to focus on the safe and efficient operation of its generation fleet. During the year Duke Energy's safety performance metrics led the utilities industry, and its regulated fuel costs averaged $2.22/kwh, which is the lowest in the past several years. Additionally, the nuclear fleet increased its capacity factor for a fourth consecutive year to approximately 96 percent, with several units setting all-time generation records.
Storm Response and System Restoration. Duke Energy’s service territories experienced numerous storms during 2016, including Winter Storm Jonas and Hurricane Matthew. During Hurricane Matthew, over 1.7 million customers in Florida and the Carolinas were without power. In the Carolinas, 1.4 million outages were restored in record time, helping communities start the rebuilding process. Power was restored to customers through the commitment and resolve of employees and contractors.
Customer Satisfaction. Higher J.D. Power customer satisfaction scores in 2016 reflect progress in the Company's efforts to improve customer satisfaction. In Florida, scores improved more than 30 points. The work to improve customer satisfaction will continue, but all jurisdictions remain on track to make steady gains in the years ahead as Duke Energy continues to transform the customer experience.
Constructive Regulatory Outcomes. Through constructive stakeholder engagement, Duke Energy reached settlements for the Edwardsport IGCC facility in Indiana and Duke Energy Progress South Carolina rate case. These settlements have been approved by the Indiana Utility Regulatory Commission (IURC) and Public Service Commission of South Carolina (PSCSC), respectively. Duke Energy will also save its Florida customers more than $800 million over approximately 20 years through the successful securitization financing of its regulatory asset related to Crystal River 3.

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Purchase of NCEMPA's Generation. In 2015, Duke Energy completed the acquisition of NCEMPA's ownership interest in some of Duke Energy Progress’s existing nuclear and coal generation for a total amount of approximately $1.25 billion. Duke Energy and NCEMPA signed a long-term wholesale contract to provide power to NCEMPA's customers previously served by the generation assets purchased by Duke Energy.
Sale of the Midwest Generation Business. In 2015, Duke Energy completed the sale of the Disposal Group to Dynegy for approximately $2.8 billion. This decision supports Duke Energy’s strategy to focus investments on businesses with more predictable and less volatile earnings. The proceeds from the sale were used, in part, to recapitalize Duke Energy through a stock repurchase program and deferrals of the issuance of long-term debt.
Operational Excellence of the Nuclear Fleet. Duke Energy’s nuclear fleet set a company record for total electricity production and demonstrated a combined capacity factor at approximately 94 percent, the 17th consecutive year above 90 percent on this plant reliability measure.
Coal Ash Management. ManagementOn April 17, 2015, the EPA published the RCRA in the Federal Register, establishing rules to regulate the disposal of CCR from electric utilities as solid waste. The RCRA, and the Coal Ash Act, as amended, finalized the legal framework related to coal ash management practices and ash basin closure. With final rules in place,. Duke Energy has madecontinued to make significant progress toward closureon the safe storage of coal ash basinsin 2016. Closure activities are underway at five sites and has recommended excavation of 24 basins in the Carolinas. In addition,comprehensive closure plans for all Duke Energy has performed comprehensive groundwater studies at eachcoal ash sites were developed and disclosed publicly during 2016, consistent with Federal Coal Combustion Residuals (CCR) requirements. In May 2016, Duke Energy received preliminary risk rankings for its coal ash sites in North Carolina basin and provided that information tofrom the North Carolina Department of Environmental Quality (NCDEQ), whichand in July 2016 new legislation was used by NCDEQ to risk-rank each North Carolina basin. These draft risk rankings provide additional direction for the closure of each basin.
Also in 2015, Duke Energy began closure activitiespassed that provided clarity on the four sites specified as high risk byranking framework. The legislation also required the Coal Ash Actcompletion of dam improvement projects and at the W.S. Lee site in South Carolina. At each site, excavation has commenced, withinstallation of water lines for residents within a half mile of coal ash moving off-site for usesites in structural fill or to lined landfills.the state. Work was completed on all required deadlines under the new legislation.
Deliver Merger Benefits.Cost Management and Efficiencies. Duke Energy continueshas a demonstrated track record of driving efficiencies and productivity, including merger integration. These efficiencies will help in Duke Energy's objective to focus on realizing benefits ofkeep overall customer rates below the merger with Progress Energy.national average, while moderating customer bill increases over time. In June 2016, Duke Energy is on track to achieveachieved the $687 million of guaranteed savings for customers in the Carolinas over five years. After three andfrom the 2012 merger with Progress Energy, a half years,full year ahead of its original commitment.
Growth in the Dividend. In 2016, Duke Energy Carolinas andcontinued to grow the dividend payment to shareholders by approximately 4 percent. 2016 represented the 90th consecutive year Duke Energy Progress have generated approximately 90 percent of the guaranteed fuel and joint dispatch savings.
Grow the Dividend. In 2015, Duke Energy increased the growth rate of thepaid a cash dividend to an annual rate of approximately 4 percent.on its common stock.
Duke Energy Objectives – 20162017 and Beyond
Duke Energy will continue to deliver exceptional value to our customers, be an integral part of the communities in which we doit does business, and provide attractive returns to our investors. Duke Energy is committed to lead the way to cleaner, smarter energy solutions that customers value through a strategy focused on:
Transformation of the customer experience to meet the changing customer expectations through enhanced convenience, control and choice in energy supply and usage.
Modernization of the powerelectric grid, including storm hardening, to ensure the system is better prepared for severe weather and to improve the system's reliability and flexibility, in support of increased distributed energy sources.as well as to provide better information and services for customers.
Generation of cleaner energy through an increased amount of natural gas, renewables generation and the continued safe and reliable operation of nuclear plants.
Expansion of natural gas infrastructure, from midstream gas pipelines to local distribution systems.
Operational excellence through engagement with employees and being one of the bestan industry leader in safety performers in the industry.performance and efficient operations.
Stakeholder engagement to ensure the regulatory rules in the states in which we operateDuke Energy operates benefit all customers.customers and allow Duke Energy to recover its significant investments in a timely manner.
Primary objectives toward the implementation of this strategy include:
Complete the Acquisition of Piedmont. As discussed above, Duke Energy will continue to pursue the remaining required regulatory approvals to achieve completion of the Piedmont acquisition in 2016. This acquisition will establish a broader gas infrastructure platform within Duke Energy.
Duke Energy expects to finance the acquisition through a combination of debt, newly issued equity and other cash sources.
Potential Sale of the Latin American Generation Business. On February 18, 2016, Duke Energy announced it had initiated a process to divest the International Energy business segment, excluding the equity investment in NMC. The process remains in a preliminary stage and there have been no binding or non-binding offers requested or submitted. There is no specific timeline for execution of a potential transaction. The sale is expected to be dilutive to Duke Energy but would improve Duke Energy's risk profile and enhance its ability to generate more consistent earnings and cash flows over time. Proceeds from a successful sale would be used to fund the operations and growth of its domestic business.
Growth Initiatives. Duke Energy will continue to pursue regulatory, state and federal approval of the growth projects announced in 2015 and in earlier periods. These projects will support long-term adjusted earnings growth and support Duke Energy’s ability to continue providing its customers affordable, reliable energy from an increasingly diverse generation portfolio.
Growth in the RegulatedElectric Utilities and Infrastructure business is expected to be supported by retailthe investment of significant capital in the electric transmission and wholesale load growthdistribution grid, and significant investments.in cleaner, more efficient generation. Duke Energy expects to invest between $4approximately $30 billion in Electric Utilities and $5 billion annually in the Regulated Utilities businessInfrastructure growth projects. Many of these projects will be recovered through riders such as transmission and distribution expenditures in Indiana and Ohio, as well as energy efficiency riders in the Carolinas.
The Commercial Portfolio renewables business is a significant component of the Duke Energy growth strategy. Renewable projects enable Duke Energy to respond to customer interest in clean energy resources while increasing diversity in the generation portfolio. The portfolio of wind and solar is expected to continue growing as between $1 billion and $2 billion of capital is expected to be deployed over the next three years. Additionally, investments in the Atlantic Coast Pipeline add approximately $1 billion of capital spending through 2017.

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five years, continuing its efforts to generate cleaner energy. Duke Energy announced newintends to work constructively with regulators to evaluate the current construct and seek modernized recovery solutions, such as riders, rate decoupling and multiyear rate plans, that benefit both customers and shareholders.
Investment projects at Electric Utilities and Infrastructure currently underway that will support growth initiatives in 2015, which include:
Duke Energy Progress proposed an approximateIndiana's $1.4 billion grid modernization plan, which was approved by the IURC in 2016, is aimed at improving reliability, including fewer outages and quicker restoration. The plan allows for recovery of Duke Energy's investment through a rider. As part of the settlement, Duke Energy also received approval to install AMI meters, deferring the costs for future recovery in a rate case.
Significant investments in natural gas-fired combined cycle plants, including completing the $1.5 billion Citrus Country plant in Florida, the $600 million Lee facility in South Carolina and the $1 billion investment in the Western Carolinas Modernization Project. The projectThese investments will retire andallow Duke Energy to replace the existingolder, less efficient coal units with two natural gasearly.
Duke Energy expects to continue to advance other cleaner energy sources within its regulated electric jurisdictions, including hydro, wind, solar and combined cycle 280 MW fired generationheat-and-power projects, a utility scale solarincreasing the flexibility of the system and allowing Duke Energy to continue lowering carbon emissions.
Electric Utilities and Infrastructure will also invest significantly in modernizing the electric grid to provide greater flexibility, better reliability and power plantquality, as well as more valuable products and aggressive energy efficiency and demand-side management adoptionservices for its customers.
These significant investments will result in the region.need to file rate cases with regulators to update customer rates. Duke Energy will also focus on modernizing the regulatory constructs in its jurisdictions to minimize rate impacts to customers and recover costs in a more timely manner.
Commercial Portfolio acquired a 7.5 percent ownership interestDuke Energy expects to invest around $6 billion in its Gas Utilities and Infrastructure business over the next five years. Growth in Gas Utilities and Infrastructure will be focused on the following:
With the acquisition of Piedmont, Duke Energy now operates gas distribution businesses across five states. The continued integration of Piedmont, as well as additional investments in the gas Local Distribution Company (LDC) system, will help maintain system integrity and expand gas distribution to new customers.
Duke Energy will continue to grow its midstream pipeline business, underpinned by investments in the Atlantic Coast Pipeline, Sabal Trail Transmission, LLCand Constitution pipeline for a total estimated investment of approximately $225 million upon completion ofprojects. These highly-contracted pipelines will bring much needed, low-cost gas supplies to the project.eastern U.S., spurring economic growth and helping Duke Energy to grow its customer base in the Southeast.

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For Commercial Renewables, Duke Energy will continue to pursue long-term, highly-contracted wind and solar projects that meet its return criteria.
Cost Management. Duke Energy has a demonstrated track record of driving efficiencies and productivity into the business. Duke Energy committedbusiness and continues to efficiencies following the merger with Progress Energy and is on track to meet those commitments. Additionally, there is potential for more productivity and efficiency gains leadingidentify sustainable cost savings as an essential element in response to a target of 2016 operations and maintenance costs at or below 2015 levels.transforming industry.
Continue theExecute on Coal Ash Management Strategy. Duke Energy will continue the company's compliance strategy with the North Carolina Coal Ash Management Act of 2014 (Coal Ash Act) and RCRA.Resource Conservation and Recovery Act. Duke Energy will update ash management plans to comply with the appropriate regulations and expand excavation and other compliance work at additional sites once plans and permits are approved.
Results of Operations
In this section, Duke Energy provides analysis and discussion of earnings and factors affecting earnings on both a GAAP and non-GAAP basis.Non-GAAP Measures
Management evaluates financial performance in part based on the non-GAAP financial measures, including adjusted earnings and adjusted diluted EPS. These items are measured asrepresent income from continuing operations net of income (loss) attributable to noncontrolling interests,Duke Energy, adjusted for the dollar and per-share impact of mark-to-market impacts of economic hedges in the Commercial Portfolio segment andspecial items. As discussed below, special items including the operating results of the Disposal Group classified as discontinued operations for GAAP purposes. Special items representinclude certain charges and credits which management believes willare not be recurring on a regular basis, although it is reasonably possible such charges and credits could recur. Operating resultsindicative of the Disposal Group sold to Dynegy are reported as discontinued operations, including a portion of the mark-to-market adjustments associated with derivative contracts. Management believes that including the operating results of the Disposal Group reported as discontinued operations better reflects its financial performance and therefore has included these results in adjusted earnings and adjusted diluted EPS prior to the sale of the Disposal Group. Additionally, as a result of completing the sale of the Disposal Group during the second quarter of 2015, state income tax expense increased as state income tax apportionments changed. The additional tax expense was recognized in Continuing Operations on a GAAP basis. This impact to state income taxes has been excluded from the Commercial Portfolio segment for adjusted diluted EPS purposes as management believes these impacts are incidental to the sale of the Disposal Group. Derivative contracts are used in Duke Energy’s hedging of a portion of the economic value of its generation assets in the Commercial Portfolio segment. The mark-to-market impact of derivative contracts is recognized in GAAP earnings immediately and, if associated with the Disposal Group, classified as discontinued operations, as such derivative contracts do not qualify for hedge accounting or regulatory treatment. The economic value of generation assets is subject to fluctuations in fair value due to market price volatility of input and output commodities (e.g., coal, electricity, natural gas). Economic hedging involves both purchases and sales of those input and output commodities related to generation assets. Operations of the generation assets are accounted for under the accrual method. Management believes excluding impacts of mark-to-market changes of the derivative contracts from adjusted earnings until settlement better matches the financial impacts of the derivative contract with the portion of economic value of the underlying hedged asset.Energy's ongoing performance. Management believes the presentation of adjusted earnings and adjusted diluted EPS provides useful information to investors, as it provides them with an additional relevant comparison of Duke Energy’s performance across periods.
Management uses these non-GAAP financial measures for planning and forecasting, and for reporting financial results to the Duke Energy Board of Directors (Board of Directors), employees, shareholders,stockholders, analysts and investors concerning Duke Energy’s financial performance.investors. Adjusted diluted EPS is also used as a basis for employee incentive bonuses. The most directly comparable GAAP measures for adjusted earnings and adjusted diluted EPS are Net Income Attributable to Duke Energy Corporation (GAAP Reported Earnings) and Diluted EPS Attributable to Duke Energy Corporation common shareholders, whichstockholders (GAAP Reported EPS).
Special items included in the periods presented include the dollarfollowing items which management believes do not reflect ongoing costs:
Costs to Achieve Mergers represents charges that result from potential or completed strategic acquisitions.
Cost Savings Initiatives represents severance charges related to company-wide initiatives to standardize processes and per-share impactsystems, leverage technology and workforce optimization.
Commercial Renewables Impairment and Asset Impairment represent other-than-temporary impairments.
Edwardsport Settlement, Ash Basin Settlement and Penalties, and Coal Ash Plea Agreements Reserve represent charges related to Plea Agreements and settlement agreements with regulators and other governmental entities.
Adjusted earnings also include the operating results of special items, mark-to-market impacts of economic hedges in the Commercial Portfolio segmentnonregulated Midwest generation business and Duke Energy Retail Sales (collectively, the Midwest Generation Disposal Group) and the International Disposal Group, which have been classified as discontinued operations.
Management evaluates segment performance based on segment income. Segment income is defined as income from continuing operations netbelieves inclusion of income attributable to noncontrolling interests. Segment income, as discussed below, includes intercompany revenues and expenses that are eliminated in the Consolidated Financial Statements. Management also uses adjusted segment income as a measure of historical and anticipated future segment performance. Adjusted segment income is a non-GAAP financial measure, as it is based upon segment income adjusted for the mark-to-market impacts of economic hedges in the Commercial Portfolio segment and special items, including the operating results of the Disposal Group classified as discontinued operations for GAAP purposes. Management believesGroups within adjusted earnings and adjusted diluted EPS results in a better reflection of Duke Energy's financial performance during the presentation of adjusted segment income as presented provides useful information to investors, as it provides them with an additional relevant comparison of a segment’s performance across periods. The most directly comparable GAAP measure for adjusted segment income is segment income, which represents segment income from continuing operations, including any special items and the mark-to-market impacts of economic hedges in the Commercial Portfolio segment.period.
Duke Energy’s adjusted earnings and adjusted diluted EPS and adjusted segment income may not be comparable to similarly titled measures of another company because other entitiescompanies may not calculate the measures in the same manner.
See Note 3Reconciliation of GAAP Reported Amounts to Adjusted Amounts
The following table presents a reconciliation of adjusted earnings and adjusted diluted EPS to the Consolidated Financial Statements, “Business Segments,” for a discussion of Duke Energy’s segment structure.most directly comparable GAAP measures.
 Years Ended December 31,
 2016 2015 2014
(in millions, except per share amounts)Earnings EPS Earnings EPS Earnings EPS
GAAP Reported Earnings/EPS$2,152
 $3.11
 $2,816
 $4.05
 $1,883
 $2.66
Adjustments to Reported:           
Costs to Achieve Mergers329
 0.48
 60
 0.09
 127
 0.18
Cost Savings Initiatives57
 0.08
 88
 0.13
 
 
Commercial Renewables Impairment45
 0.07
 
 
 
 
Edwardsport Settlement
 
 58
 0.08
 
 
Ash Basin Settlement and Penalties
 
 11
 0.02
 
 
Asset Impairment
 
 
 
 59
 0.08
Coal Ash Plea Agreements Reserve
 
 
 
 102
 0.14
Asset Sales
 
 
 
 (9) (0.01)
Economic Hedges (mark-to-market)
 
 
 
 6
 0.01
Discontinued Operations(a)(b)(c)
661
 0.95
 119
 0.17
 1,050
 1.49
Adjusted Earnings/Adjusted Diluted EPS$3,244
 $4.69
 $3,152
 $4.54
 $3,218
 $4.55

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(a)For 2016, includes a loss on sale of the International Disposal Group. Represents the GAAP reported Loss from Discontinued Operations, less the International Disposal Group operating results, which are included in adjusted earnings.
(b)For 2015, includes the impact of a litigation reserve related to the Midwest Generation Disposal Group. Represents (i) GAAP reported Income from Discontinued Operations, less the International Disposal Group operating results and Midwest Generation Disposal Group operating results, which are included in adjusted earnings, and (ii) a state tax charge resulting from the completion of the sale of the Midwest Generation Disposal Group but not reported as discontinued operations.
(c)For 2014, includes an impairment of the Midwest Generation Disposal Group and a tax charge related to the repatriation of foreign earnings of the International Disposal Group. Represents the GAAP reported Loss from Discontinued Operations, less the International Disposal Group operating results and Midwest Generation Disposal Group operating results, which are included in adjusted earnings.
OverviewYear Ended December 31, 2016 as compared to 2015
The following table reconciles non-GAAP measuresDuke Energy’s full-year 2016 GAAP Reported EPS was $3.11 compared to $4.05 for full-year 2015. GAAP Reported EPS was lower primarily due to a $0.93 loss on sale of the International business, which has been presented as discontinued operations. Duke Energy also recorded $0.40 of after-tax costs to achieve the Piedmont merger in 2016, including losses on interest rate swaps related to the most directly comparable GAAP measure.acquisition financing. See Note 2, "Acquisitions and Dispositions," for additional information on the Piedmont and International transactions.
  Year Ended December 31, 2015
       Total
   Eliminations/
   Per
 Regulated
 International
 Commercial
 Reportable
   Discontinued
 Duke
 Diluted
(in millions, except per share amounts)Utilities
 Energy
 Portfolio
 Segments
 Other
 Operations
 Energy
 Share
Adjusted segment income/Adjusted earnings$2,972
 $225
 $140
 $3,337
 $(185) $
 $3,152
 $4.54
Midwest generation operations
 
 (94) $(94) 
 94
 
 
Cost savings initiatives(10) 
 (1) (11) (77) 
 (88) (0.13)
Costs to achieve mergers
 
 
 
 (60) 
 (60) (0.09)
Edwardsport settlement(58) 
 
 (58) 
 
 (58) (0.08)
Ash basin settlement penalties(11) 
 
 (11) 
 
 (11) (0.02)
Discontinued operations
 
 (41) (41) 
 (78) (119) (0.17)
Segment income (loss)/Net income attributable to Duke Energy Corporation$2,893
 $225
 $4
 $3,122
 $(322) $16
 $2,816
 $4.05
  Year Ended December 31, 2014
       Total
   Eliminations/
   Per
 Regulated
 International
 Commercial
 Reportable
   Discontinued
 Duke
 Diluted
(in millions, except per share amounts)Utilities
 Energy
 Portfolio
 Segments
 Other
 Operations
 Energy
 Share
Adjusted segment income/Adjusted earnings$2,897
 $428
 $109
 $3,434
 $(216) $
 $3,218
 $4.55
International tax adjustment
 (373) 
 (373) 
 
 (373) (0.53)
Costs to achieve mergers
 
 
 
 (127) 
 (127) (0.18)
Midwest generation operations
 
 (114) (114) 
 114
 
 
Coal ash Plea Agreements reserve(102) 
 
 (102) 
 
 (102) (0.14)
Asset impairment
 
 (59) (59) 
 
 (59) (0.08)
Asset sales
 
 
 
 9
 
 9
 0.01
Economic hedges (mark-to-market)
 
 (6) (6) 
 
 (6) (0.01)
Discontinued operations
 
 15
 15
 
 (692) (677) (0.96)
Segment income (loss)/Net income attributable to Duke Energy Corporation$2,795
 $55
 $(55) $2,795
 $(334) $(578) $1,883

$2.66

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  Year Ended December 31, 2013
       Total
   Eliminations/
   Per
 Regulated
 International
 Commercial
 Reportable
   Discontinued
 Duke
 Diluted
(in millions, except per share amounts)Utilities
 Energy
 Portfolio
 Segments
 Other
 Operations
 Energy
 Share
Adjusted segment income/Adjusted earnings$2,776
 $408
 $15
 $3,199
 $(119) $
 $3,080
 $4.36
Crystal River Unit 3 charges(215) 
 
 (215) 
 
 (215) (0.31)
Costs to achieve mergers
 
 
 
 (184) 
 (184) (0.26)
Midwest generation operations
 
 (88) (88) 14
 74
 
 
Nuclear development charges(57) 
 
 (57) 
 
 (57) (0.08)
Litigation reserve
 
 
 
 (14) 
 (14) (0.02)
Asset sales
 
 (15) (15) 65
 
 50
 0.07
Discontinued operations
 
 
 
 
 5
 5
 
Segment income (loss)/Net income attributable to Duke Energy Corporation$2,504
 $408
 $(88) $2,824
 $(238) $79
 $2,665

$3.76
As discussed, management also evaluates financial performance based on adjusted earnings. Duke Energy’s full-year 2016 adjusted diluted EPS was $4.69 compared to $4.54 for full-year 2015. The variance in adjusted diluted EPS was primarily due to:
More favorable weather in 2016 compared to 2015;
Increased retail revenues from pricing and riders, including energy efficiency programs;
Strong operations and maintenance cost control at Electric Utilities and Infrastructure; and
Piedmont’s earnings forcontribution subsequent to the year endedacquisition in October 2016.
Partially offset by:
Higher storm costs at Electric Utilities and Infrastructure due to significant 2016 storms;
Higher interest expense related to additional debt outstanding; and
Higher depreciation and amortization expense at Electric Utilities and Infrastructure primarily due to higher depreciable base.
Year Ended December 31, 2015 as compared to 2014
Duke Energy’s full-year 2015 GAAP Reported EPS was $4.05 compared to $2.66 for full-year 2014. GAAP Reported EPS in 2015 was higher primarily due to a $0.92 loss per share from discontinued operations in 2014, which included an impairment of the Midwest Generation Disposal Group and a tax charge on repatriated foreign earnings related to the International Disposal Group.
As discussed, management also evaluates financial performance based on adjusted earnings. Duke Energy’s full-year 2015 adjusted diluted EPS was $4.54 compared to $4.55 for full-year 2014. The variance in adjusted diluted EPS was primarily due to:
Lower results in Latin America primarily due to lower demand, unfavorable hydrology in Brazil, changes in foreign currency exchange rates, a prior-year tax benefit in 2014 related to the reorganization of Chilean operations and lower dispatch in Central America due to increased competition;
Higher operations and maintenance expense primarily due to the prior-yeara 2014 benefit associated with the adoption of nuclear outage levelization, amounts related to additional ownership interest in assets acquired from NCEMPA,North Carolina Eastern Municipal Power Agency (NCEMPA), and higher planned fossil generation outage costs, partially offset by lower storm restoration costs;
Higher depreciation and amortization expense primarily due to higher depreciable base; and
Lower equity in earnings of unconsolidated affiliates due to lower margins at NMC,National Methanol Company (NMC), largely driven by lower MTBE prices, partially offset by lower butane costs.
Partially offset by:
Increased retail pricing primarily due to rate riders in most jurisdictions, including increased revenues related to energy efficiency programs, equity returns related to additional ownership interest in assets acquired from NCEMPA and higher base rates;
Increased wholesale net margins largely due to increases in contracted amounts and prices and a new wholesale contract with NCEMPA;
Retail sales growth of 0.6 percent;
Higher results at the nonregulated Midwest generation business prior to its sale on April 2, 2015, due to higher PJM Interconnection LLC (PJM) capacity revenues and increased generation margins; and
Reduction in shares outstanding due to the Duke Energy accelerated stock repurchase (only impacts per diluted share amounts in the tables above)amounts).
The variance in adjusted earnings for the year ended December 31, 2014, compared to 2013, was primarily due to:
Increased retail pricing and riders primarily resulting from the implementation of revised rates in most jurisdictions;
Favorable weather in 2014 compared to 2013;
Higher PJM capacity revenues for the nonregulated Midwest generation business due to higher prices; and
Higher results of the renewables business due to higher production from the wind and solar portfolios, lower costs and additional renewables investments.
Partially offset by:
Higher depreciation and amortization expense primarily due to higher depreciable asset base and lower reductions to cost of removal reserves;
Higher operations and maintenance expense due to higher storm costs, the timing of fossil plant outages and the impact of nuclear outage cost levelization;
Lower post in-service debt returns due to projects added to customer rates; and
Higher property and other non-income taxes.

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Segment Results
The remaining information presented in this discussion of results of operations is on a GAAP basis. Management evaluates segment performance based on segment income. Segment income is defined as income from continuing operations net of income attributable to noncontrolling interests. Segment income includes intercompany revenues and expenses that are eliminated in the Consolidated Financial Statements.
Due to the Piedmont acquisition and the sale of International Energy in the fourth quarter of 2016, Duke Energy's segment structure has been realigned to include the following segments: Electric Utilities and Infrastructure, Gas Utilities and Infrastructure and Commercial Renewables. The remainder of Duke Energy’s operations is presented as Other. Prior period information has been recast to conform to the current segment structure. See Note 2 to the Consolidated Financial Statements, "Acquisitions and Disposition," for further information on the Piedmont acquisition and International Energy sale and Note 3, “Business Segments,” for additional information on Duke Energy’s segment structure.
RegulatedElectric Utilities and Infrastructure
Years Ended December 31,Years Ended December 31,
    Variance
   Variance
    Variance
   Variance
    2015 vs.
   2014 vs.
    2016 vs.
   2015 vs.
(in millions) 2015
 2014
 2014
 2013
 2013
2016
 2015
 2015
 2014
 2014
Operating Revenues $22,062
 $22,271
 $(209) $20,910
 $1,361
$21,366
 $21,521
 $(155) $21,691
 $(170)
Operating Expenses 16,698
 17,026
 (328) 16,126
 900
15,821
 16,295
 (474) 16,609
 (314)
Gains on Sales of Other Assets and Other, net 11
 4
 7
 7
 (3)
 5
 (5) 4
 1
Operating Income 5,375
 5,249
 126
 4,791
 458
5,545
 5,231
 314
 5,086
 145
Other Income and Expense, net 262
 267
 (5) 221
 46
Other Income and Expenses303
 264
 39
 267
 (3)
Interest Expense 1,097
 1,093
 4
 986
 107
1,136
 1,074
 62
 1,057
 17
Income Before Income Taxes 4,540
 4,423
 117
 4,026
 397
4,712
 4,421
 291
 4,296
 125
Income Tax Expense 1,647
 1,628
 19
 1,522
 106
1,672
 1,602
 70
 1,582
 20
Segment Income $2,893
 $2,795
 $98
 $2,504
 $291
$3,040
 $2,819
 $221
 $2,714
 $105
                  
Duke Energy Carolinas Gigawatt-Hours (GWh) sales87,375
 87,645
 (270) 85,790
 1,855
88,545
 86,950
 1,595
 88,070
 (1,120)
Duke Energy Progress GWh sales64,881
 62,871
 2,010
 60,204
 2,667
69,049
 64,881
 4,168
 62,871
 2,010
Duke Energy Florida GWh sales40,053
 38,703
 1,350
 37,974
 729
40,404
 40,053
 351
 38,703
 1,350
Duke Energy Ohio GWh sales 25,439
 24,735
 704
 24,557
 178
25,163
 25,439
 (276) 24,735
 704
Duke Energy Indiana GWh sales 33,518
 33,433
 85
 33,715
 (282)34,368
 33,518
 850
 33,433
 85
Total Regulated Utilities GWh sales 251,266
 247,387
 3,879
 242,240
 5,147
Total Electric Utilities and Infrastructure GWh sales257,529
 250,841
 6,688
 247,812
 3,029
Net proportional MW capacity in operation 50,170
 49,600
 570
 49,607
 (7)49,295
 50,170
 (875) 49,600
 570
Year Ended December 31, 2016 as Compared to 2015
Electric Utilities and Infrastructure's higher earnings were primarily due to increased pricing and rider revenues, favorable weather, a prior year impairment charge associated with the 2015 Edwardsport IGCC settlement and an increase in wholesale power margins. These impacts were partially offset by increased depreciation and amortization expense, higher interest expense and higher operations and maintenance expense. The following is a detailed discussion of the variance drivers by line item.
Operating Revenues. The variance was driven primarily by:
a $768 million decrease in fuel revenues driven by lower fuel prices included in rates.
Partially offset by:
a $414 million increase in rider revenues including increased revenues related to energy efficiency programs, the additional ownership interest in generating assets acquired from NCEMPA in the third quarter of 2015 and increased revenues related to Duke Energy Indiana’s clean coal equipment, and increased retail electric pricing primarily due to the expiration of the North Carolina cost of removal decrement rider;
a $101 million increase in retail sales, net of fuel revenue, due to favorable weather compared to the prior year; and
a $76 million increase in wholesale power revenues primarily due to additional volumes and capacity charges for customers served under long-term contracts, including the NCEMPA wholesale contract.
Operating Expenses. The variance was driven primarily by:
a $713 million decrease in fuel expense (including purchased power and natural gas purchases for resale) primarily due to lower natural gas and coal prices, and lower volumes of coal and oil, partially offset by higher volumes of natural gas; and
an $88 million pretax impairment charge in the prior year related to the 2015 Edwardsport IGCC settlement.

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Partially offset by:
a $162 million increase in depreciation and amortization expense primarily due to additional plant in service, including the additional ownership interest in generating assets acquired from NCEMPA, as well as the expiration of the North Carolina cost of removal decrement rider; and
a $154 million increase in operations and maintenance expense primarily due to higher environmental and operational costs that are recoverable in rates, increased employee benefit costs, and higher storm restoration costs, partially offset by lower costs due to effective cost control efforts.
Other Income and Expenses. The variance was primarily driven by higher AFUDC equity.
Interest Expense. The variance was due to higher debt outstanding in the current year.
Income Tax Expense. The variance was primarily due to an increase in pretax income. The effective tax rates for the years ended December 31, 2016 and 2015 were 35.5 percent and 36.2 percent, respectively.
Year Ended December 31, 2015 as Compared to 2014
Regulated Utilities’ results increasedElectric Utilities and Infrastructure’s higher earnings were primarily due to an increase in wholesale power margins, growth in retail sales, and increased retail pricing primarily due to rate riders in most jurisdictions, including increased revenues related to energy efficiency programs, and higher base rates primarily due to phasing of 2013 rate cases. These drivers were partially offset by an impairment expensecharge associated with the 2015 Edwardsport IGCC settlement, higher operations and maintenance expenses,expense and increased depreciation and amortization expense. The following is a detailed discussion of the variance drivers by line item.
Operating Revenues. The variance was driven primarily by:
a $339$296 million decrease in fuel revenues driven primarily bydue to lower overall lower fuel rates for electric retail customers. Fuel revenues represent sales to retail and wholesale customers;prices included in rates; and
a $131 million decrease in revenues to recover gross receipts taxes due to the North Carolina Tax Simplification and Rate Reduction Act, which terminated the collection of the North Carolina gross receipts tax effective July 1, 2014.2014 (offset in Operating Expenses).
Partially offset by:
a $175 million increase in wholesale power revenues, primarily due to additional volumes and capacity charges for customers served under long-term contracts, including the NCEMPA wholesale contract that became effective August 1, 2015;contract; and
a $79an $81 million increase from retail sales growth (net of fuel revenue) reflectingdue to increased demand.
Operating Expenses. The variance was driven primarily by:
a $422$378 million decrease in fuel expense (including purchased power and natural gas purchases for resale)power) primarily due to (i) lower natural gas and coal prices (ii)and lower volumes of coal and oil, used in electric generation and (iii) lower gas prices and volumes to full-service retail gas customers, partially offset by (iv) higher volumes of natural gas used in electric generation;gas; and
a $116$131 million decrease in property and other taxes primarily due to the termination of the collection of the North Carolina gross receipts tax as mentioned above,(offset in Operating Revenues) and the partial reversal of a sales tax reserve recorded in 2014 at Duke Energy Indiana, partially offset by higher property taxes across multiple jurisdictions and a favorable 2014 Ohio gas excise tax settlement that did not recur in 2015.jurisdictions.
Partially offset by:
an $88 million pretax impairment charge related to the 2015 Edwardsport IGCC settlement. See Note 4 to the Consolidated Financial Statements, “Regulatory Matters,” for additional information;

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a $56$49 million increase in depreciation and amortization expense primarily due to additional plant in service; and
a $47 million increase in operations and maintenance expense primarily due to planned nuclear spending and the prior-year2014 benefit of the adoption of nuclear outage levelization, higher costs for customer programs and distribution projects, and higher maintenance costs at fossil generation stations primarily due to increased ownership interest in assets acquired from NCEMPA, partially offset by a 2014 litigation reserve related to the investigation of the Dan River coal ash spill (see Note 5 to the Consolidated Financial Statements, “Commitments and Contingencies,” for additional information), and lower storm restoration costs; and
a $55 million increase in depreciation and amortization expense primarily due to increased plant in service.costs.
Income Tax Expense. The variance was primarily due to an increase in the pretax income. The effective tax rates for the years ended December 31, 2015 and 2014 were 36.336.2 percent and 36.8 percent, respectively.
Year Ended December 31, 2014 as Compared to 2013Matters Impacting Future Electric Utilities and Infrastructure Results
Regulated Utilities’ results were positively impacted by higher retail pricing and rate riders, favorable weather, an increase in wholesale power margins, retail sales growth, and 2013 impairments and other charges. These impacts were partially offset by higher depreciation and amortization expense, higher operation and maintenanceAn order from regulatory authorities disallowing recovery of costs higher interest expense, and higher income tax expense. The following is a detailed discussion of the variance drivers by line item.
Operating Revenues. The variance was driven primarily by:
a $614 million increase in fuel revenues driven primarily by increased demand from electric retail customers resulting from favorable weather conditions, and higher fuel rates for electric retail customers for all jurisdictions, except North Carolina. Fuel revenues represent sales to retail and wholesale customers;
a $556 million net increase in retail pricing primarily due to retail rate changes and updated rate riders;
a $216 million increase in electric sales (net of fuel revenue) to retail customers due to more favorable weather conditions across the service territory. Compared to normal, weather was favorable in the Carolinas and Florida service territories, while weather in the Midwest was essentially normal;
a $63 million increase in wholesale power revenues, net of sharing, primarily due to additional volumes and capacity charges for customers served under long-term contracts; and
a $21 million increase from retail sales growth (net of fuel revenue) reflecting increased demand.
Partially offset by:
a $139 milliondecrease in gross receipts tax revenue due to the NC Tax Simplification and Rate Reduction Act which terminated the collection of the North Carolina gross receipts tax effective July 1, 2014.
Operating Expenses. The variance was driven primarily by:
a $611 million increase in fuel expense (including purchased power and natural gas purchases for resale) primarily related to (i) higher volumesclosure of coal,ash impoundments could have an adverse impact on Electric Utilities and oilused in electric generation due primarily to increased generation resulting from favorable weather conditions, (ii) higher natural gasprices,Infrastructure's financial position, results of operations and (iii) the application of the Nuclear Electric Insurance Limited (NEIL) settlement proceeds in 2013 for Duke Energy Florida;
a $436 million increase in depreciationcash flows. See Notes 4 and amortization expense primarily due to increases in depreciation as a result of additional plant in service and amortization of regulatory assets, and higher 2013 reductions to cost of removal reserves in accordance with regulatory orders; and
a $292 million increase in operating and maintenance expense primarily due to a litigation reserve related to the criminal investigation of the Dan River coal ash spill (see Note 5 to the Consolidated Financial Statements, “Commitments and Contingencies,” for additional information), higher storm costs, repairs and remediation expenses associated with the Dan River coal ash discharge and other ash basin related assessment costs, and higher nuclear costs, including nuclear outage levelization costs, and higher environmental and operational costs that are recoverable in rates; partially offset by a 2013 Crystal River Unit 3 related settlement matter, decreased benefits costsand 2013 donations for low-income customers and job training in accordance with 2013 NCUC and PSCSC rate case orders.
Partially offset by:
a $346 million decrease due to the 2013 impairment and other charges primarily related to Crystal River Unit 3 and the proposed Levy Nuclear Station (Levy). See Note 49 to the Consolidated Financial Statements, “Regulatory Matters,”Matters” and "Asset Retirement Obligations," respectively, for additional information;information.
a $42 million decrease in property and other taxes primarily due to the termination of the collection of the North Carolina gross receipts tax as mentioned above; partially offset by a sales tax reserve as a result of an Indiana sales tax audit, and higher property taxes; and
a $22 million decrease due to the 2013 impairment resulting from the decision to suspend the application for two proposed nuclear units at Shearon Harris Nuclear Plant (Harris).
Other Income and Expenses, net. The varianceis primarily due to recognition of post in-service equity returns for projects that had been completed prior to being reflected in customer rates, partially offset by lower Allowance for Funds Used During Construction (AFUDC) equity, primarily due to placing the Sutton Plant into service in late 2013.

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Interest Expense. The variancewas primarily due to no longer recording post in-service debt returns on projects reflectedOn May 18, 2016, the NCDEQ issued proposed risk classifications for all coal ash surface impoundments in customer ratesand a reduction in debt return on the Crystal River Unit 3 regulatory asset recovered through fuel revenues.
Income Tax Expense. The variance was primarily due to higher pretax income, partially offset by a lower effective tax rate of 36.8 percent compared to 37.8 percent, respectively, for the years ended December 31, 2014 and 2013. The decrease in effective tax rate is primarily due to favorable audit settlements, a higher manufacturing deduction due to prior year limitations based on taxable income, and changes in income apportionment for state income tax, partially offsetNorth Carolina. All ash impoundments not previously designated as high priority by the non-deductible litigation reserveCoal Ash Act were designated as intermediate risk. Certain impoundments classified as intermediate risk, however, may be reassessed in the future as low risk pursuant to legislation signed by the former North Carolina governor on July 14, 2016. Electric Utilities and Infrastructure's estimated asset retirement obligations (AROs) related to the criminal investigationclosure of North Carolina ash impoundments are based upon the Dan Rivermandated closure method or a probability weighting of potential closure methods for the impoundments that may be reassessed to low risk. As the final risk ranking classifications in North Carolina are delineated, final closure plans and corrective action measures are developed and approved for each site, the closure work progresses and the closure method scope and remedial methods are determined, the complexity of work and the amount of coal ash spill.
Matters Impacting Future Regulatedcombustion material could be different than originally estimated and, therefore, could materially impact Electric Utilities Resultsand Infrastructure's financial position. See Note 9 to the Consolidated Financial Statements, “Asset Retirement Obligations,” for additional information.
Duke Energy is a party to multiple lawsuits and could be subject to fines and other penalties related to the Dan River coal ash release and operations at other North Carolina facilities with ash basins. The outcome of these lawsuits and potential fines and penalties could have an adverse impact on Regulated Utilities’Electric Utilities and Infrastructure's financial position, results of operations and cash flows. See Note 5 to the Consolidated Financial Statements, “Commitments and Contingencies,” for additional information.
AnIn the fourth quarter of 2016, Hurricane Matthew caused historic flooding, extensive damage and widespread power outages within the Duke Energy Progress service territory. Duke Energy Progress filed a petition with the North Carolina Utilities Commission (NCUC) requesting an accounting order to defer approximately $140 million of incremental operation and maintenance and capital costs incurred in response to Hurricane Matthew and other significant 2016 storms. The NCUC has not ruled on the petition. A final order from regulatory authorities disallowingthe NCUC that disallows the deferral and future recovery of all or a significant portion of the incremental storm restoration costs related to closure of ash impoundmentsincurred could haveresult in an adverse impact on Regulated Utilities'Electric Utilities and Infrastructure's financial position, results of operations and cash flows. See Notes 4
Duke Energy Carolinas and 9Duke Energy Progress intend to file rate cases in North Carolina in 2017 to recover costs of complying with CCR regulations and the Coal Ash Act, as well as costs of capital investments in generation, transmission and distribution systems and any increase in expenditures subsequent to previous rate cases. Duke Energy Ohio has notified the Public Utilities Commission of Ohio (PUCO) of its intent to file an electric distribution rate case in Ohio to address recovery of electric distribution system capital investments and any increase in expenditures subsequent to previous rate cases. Electric Utilities and Infrastructure's earnings could be adversely impacted if these rate cases are delayed or denied by the NCUC or PUCO.
Gas Utilities and Infrastructure
 Years Ended December 31,
     Variance
   Variance
     2016 vs.
   2015 vs.
(in millions)2016
 2015
 2015
 2014
 2014
Operating Revenues$901
 $541
 $360
 $578
 $(37)
Operating Expenses636
 408
 228
 419
 (11)
(Loss) Gains on Sales of Other Assets and Other, net(1) 6
 (7) 
 6
Operating Income264
 139
 125
 159
 (20)
Other Income and Expenses24
 3
 21
 3
 
Interest Expense46
 25
 21
 37
 (12)
Income Before Income Taxes242
 117
 125
 125
 (8)
Income Tax Expense90
 44
 46
 45
 (1)
Segment Income$152
 $73
 $79
 $80
 $(7)
          
Piedmont LDC throughput (dekatherms) (a)
120,908,508
 
 120,908,508
 
 
Duke Energy Midwest LDC throughput (MCF)81,870,489
 84,523,814
 (2,653,325) 93,275,895
 (8,752,081)
(a)    Only includes throughput subsequent to Duke Energy's acquisition of Piedmont on October 3, 2016.
Year Ended December 31, 2016 as Compared to 2015
Gas Utilities and Infrastructure's higher results were primarily due to the Consolidated Financial Statements, “Regulatory Matters”inclusion of Piedmont's earnings subsequent to the merger on October 3, 2016 and "Asset Retirement Obligations," respectively,higher equity earnings from pipeline investments. Piedmont's earnings included in Gas Utilities and Infrastructure's results were $67 million for additional information.the year ended December 31, 2016.
Operating Revenues. The variance was driven primarily by a $398 million increase in operating revenues due to the inclusion of Piedmont operating revenues beginning in October 2016, partially offset by a $38 million decrease in fuel revenues driven by lower natural gas prices and decreased sales volumes for Midwest operations.
Operating Expenses. The variance was driven primarily by a $276 million increase in operating expenses due to the inclusion of Piedmont operating expenses beginning in October 2016, partially offset by a $38 million decrease in the cost of natural gas, primarily due to decreased volumes and lower natural gas prices for Midwest operations.
Other Income and Expenses. The increase was driven primarily by higher equity earnings from pipeline investments.
Interest Expense. The variance was primarily due to the inclusion of Piedmont interest expenses beginning in October 2016.

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Income Tax Expense. The variance was primarily due to an increase in pretax income. The effective tax rates for the years ended December 31, 2016 and 2015 were 37.2 percent and 37.6 percent, respectively.
Year Ended December 31, 2015 as Compared to 2014
Gas Utilities and Infrastructure's lower earnings were primarily due to unfavorable weather.
Operating Revenues. The variance was driven primarily by:
a $43 million decrease in fuel revenues primarily driven by lower natural gas prices and decreased sales volumes; and
a $7 million decrease in sales to retail customers due to unfavorable weather.
Partially offset by:
a $19 increase in regulated natural gas rider revenues primarily due to rate increases.
Operating Expenses. The variance is driven primarily by:
a $43 million decrease in the cost of natural gas, primarily due to decreased volumes and lower natural gas prices.
Partially offset by:
a $16 million increase due to a favorable gas excise tax settlement in June 2014; and
an $8 million increase due to amortization of the manufactured gas plant (MGP) regulatory asset.
Income Tax Expense. The variance was primarily due to lower pretax income, partially offset by an increase in effective tax rate. The effective tax rates for the years ended December 31, 2015 and 2014 were 37.6 percent and 36.0 percent, respectively.
Matters Impacting Future Gas Utilities and Infrastructure Results
Gas Utilities and Infrastructure has a 24 percent ownership interest in Constitution Pipeline Company, LLC (Constitution), a natural gas pipeline project slated to transport natural gas supplies to major northeastern markets. On April 22, 2016, the New York State Department of Environmental Conservation denied Constitution’s application for a necessary water quality certification for the New York portion of the Constitution pipeline. Constitution has stopped construction and discontinued capitalization of future development costs until the project's uncertainty is resolved. To the extent the legal and regulatory proceedings have unfavorable outcomes, or if Constitution concludes that the project is not viable or does not go forward, an impairment charge of up to the recorded investment in the project, net of any cash and working capital returned, may be recorded. With the project on hold, funding of project costs has ceased until resolution of legal actions. Duke Energy is contractually obligated to provide funding of required operating costs, including the ownership percentage of legal expenses to obtain the necessary permitting for the project and project costs incurred prior to the denial of the water permit. If the legal actions result in an outcome where the project is abandoned, Constitution is obligated under various contracts to pay breakage fees that Gas Utilities and Infrastructure would be obligated to fund up to the ownership percentage, or potentially up to $10 million.
In 2013, a Federal Energy Regulatory Commission (FERC) Administrative Law Judge (ALJ) issued an initial decision that Duke Energy is responsible for costs associated with Multi Value Projects (MVP), a type of Transmission Expansion Planning (MTEP) cost, approved by MISO prior to the date of Duke Energy’s withdrawal. On October 29, 2015, the FERCPUCO issued an order reversing the ALJ's decision. FERC ruled that(PUCO order) approving Duke Energy has no liabilityOhio’s recovery of costs incurred between 2008 and 2012 for MVPenvironmental investigation and remediation of two former MGP sites. At December 31, 2016, Duke Energy Ohio had recorded in Regulatory assets on the Consolidated Balance Sheet approximately $99 million of estimated MGP remediation costs after its withdrawal from MISO. On November 30, 2015, MISO filed withnot yet recovered through the FERC a request for rehearing. MISO mayMGP rider mechanism. Intervenors have appealed to the Ohio Supreme Court the PUCO order authorizing recovery of these amounts. That appeal remains pending. Duke Energy Ohio cannot predict the FERC's decision if its request for rehearing is denied.outcome of the appeal before the Ohio Supreme Court or future action by the PUCO. If Duke Energy Ohio is deemed responsible fornot able to recover these remediation costs and ifin rates, the regulatory commissions disallow recovery of these costs there would becould have an adverse impact to Regulated Utilities'on Gas Utilities and Infrastructure's financial position, results of operations and cash flows. See Note 4 to the Consolidated Financial Statements, “Regulatory"Regulatory Matters," for additional information.
The FPSC approved an agreement on all securitization-related issues and issued a final financing order to securitize the Crystal River Unit 3 Regulatory asset with low-cost securities. Securitization will replace base rate recovery and result in a lower rate impact to customers. Securitization of the costs of the retired Crystal River Unit 3 Nuclear Plant would result in an initial acceleration of cash, followed by a reduction to Regulated Utilities’ future results of operations and ongoing cash flows as it would no longer earn an equity return on these costs. Under a previous settlement agreement with the FPSC, the allowed return on equity for Crystal River Unit 3 is limited to 70 percent of the approved return on equity, which is currently 10.5 percent. Regulated Utilities expects to issue the securitization bonds in the first half of 2016.
In September 2015, Duke Energy Indiana entered into a settlement agreement with multiple parties that will resolve all disputes, claims and issues from the IURC proceedings regarding the Edwardsport IGCC generating facility. In January 2016, additional parties joined a revised settlement. Pursuant to the terms of the agreement, Regulated Utilities recognized an impairment and related charges of $93 million. Additionally, the agreement stipulates the recovery of the remaining regulatory asset over an eight-year period and confirms the conclusion that the in-service date for accounting and ratemaking purposes will remain June 7, 2013. The settlement agreement will also impose a cost cap for recoverable operations and maintenance retail costs of $73 million in 2016 and $77 million in 2017 as well as a cost cap for ongoing capital expenditures through 2017. As part of the settlement, Duke Energy Indiana committed to cease burning coal at Gallagher Station Units 2 and 4 by the end of 2022. The settlement is subject to IURC approval and if approved would resolve and close a number of outstanding issues pending before the IURC related to post commercial operating performance and recovery of ongoing operating and capital costs at Edwardsport. If the settlement is not approved, outstanding issues before the IURC related to Edwardsport would resume, the ultimate resolution of which could have an adverse impact on Regulated Utilities' financial position, results of operations and cash flows. In addition, the inability to manage operating and capital costs under caps imposed under the settlement could have an adverse impact on Regulated Utilities' financial position, results of operations and cash flows. See Note 4 to the Consolidated Financial Statements, “Regulatory Matters,” for additional information.
On October 23, 2015, the EPA published in the Federal Register the CPP rule for regulating CO2 emissions from existing fossil fuel-fired EGUs. The CPP establishes CO2 emission rates and mass cap goals that apply to fossil fuel-fired generation. Under the CPP, states are required to develop and submit a final compliance plan, or an initial plan with an extension request, to the EPA by September 6, 2016, or no later than September 6, 2018, with an approved extension. These state plans are subject to EPA approval, with a federal plan applied to states that fail to submit a plan to the EPA or if a state plan is not approved. Legal challenges to the CPP have been filed by stakeholders and motions to stay the requirements of the rule pending the outcome of the litigation have been filed. The U.S. Supreme Court granted a Motion to Stay in February 2016, effectively blocking enforcement of the rule until legal challenges are resolved. Final resolution of these legal challenges could take several years. Compliance with CPP could cause the industry to replace coal generation with natural gas and renewables, especially in states that have significant CO2 reduction targets under the rule. Costs to operate coal-fired generation plants continue to grow due to increasing environmental compliance requirements, including ash management costs unrelated to CPP, and this may result in the retirement of coal-fired generation plants earlier than the current useful lives. Regulated Utilities continues to evaluate the need to retire generating facilities and plans to seek regulatory recovery, where appropriate, for amounts that have not been recovered upon asset retirements. However, recovery is subject to future regulatory approval, including the recovery of carrying costs on remaining book values, and therefore cannot be assured. In addition, Regulated Utilities could incur increased fuel, purchased power, operation and maintenance, and other costs for replacement generation as a result of this rule. Regulated Utilities cannot predict the outcome of these matters.

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International EnergyCommercial Renewables
 Years Ended December 31,Years Ended December 31,
     Variance
   Variance
    Variance
   Variance
     2015 vs.
   2014 vs.
    2016 vs.
   2015 vs.
(in millions)  2015
 2014
 2014
 2013
 2013
2016
 2015
 2015
 2014
 2014
Operating Revenues  $1,088
 $1,417
 $(329) $1,546
 $(129)$484
 $286
 $198
 $236
 $50
Operating Expenses  805
 1,007
 (202) 1,000
 7
492
 322
 170
 231
 91
Gains on Sales of Other Assets and Other, net  6
 6
 
 3
 3
5
 1
 4
 
 1
Operating Income  289
 416
 (127) 549
 (133)
Other Income and Expense, net  101
 190
 (89) 125
 65
Operating (Loss) Income(3) (35) 32
 5
 (40)
Other Income and Expenses(83) 2
 (85) 11
 (9)
Interest Expense  85
 93
 (8) 86
 7
53
 44
 9
 50
 (6)
Income Before Income Taxes  305
 513
 (208) 588
 (75)
Income Tax Expense  74
 449
 (375) 166
 283
Less: Income Attributable to Noncontrolling Interests  6
 9
 (3) 14
 (5)
Loss Before Income Taxes(139) (77) (62) (34) (43)
Income Tax Benefit(160) (128) (32) (88) (40)
Less: (Loss) Income Attributable to Noncontrolling Interests(2) (1) (1) 1
 (2)
Segment Income  $225
 $55
 $170
 $408
 $(353)$23
 $52
 $(29) $53
 $(1)
                   
Sales, GWh  19,211
 18,629
 582
 20,306
 (1,677)
Renewable plant production, GWh 7,565
 5,577
 1,988
 5,462
 115
Net proportional MW capacity in operation  4,333
 4,340
 (7) 4,600
 (260)2,892
 1,943
 949
 1,370
 573
Year Ended December 31, 20152016 as Compared to 20142015
International Energy’s resultsCommercial Renewables' lower earnings were impacted by the absence of prior-year taxes on repatriated foreign earnings,primarily due to an impairment charge related to certain equity method investments in wind projects, partially offset by lower resultsnew wind and solar generation placed in Brazil due to lower demand, unfavorable hydrological conditionsservice and changes in foreign currency exchange rates, the absence of a prior year merger step-up tax benefit in Chile and lower earnings from NMC and Central America.improved wind production. The following is a detailed discussion of the variance drivers by line item.
Operating Revenues.Revenues. The variance was driven primarily by:
a $177$135 million decrease in Brazilincrease due to exchange rates, lower average spot prices and volumes, partially offsetgrowth of REC Solar, a California-based provider of solar installations acquired by higher average contract prices;
a $122 million decreaseDuke Energy in Central America due to lower average prices and volumes as a result of increased competition and unplanned outages;2015; and
a $27 million decrease in Peru due to lower average hydrocarbon prices and unfavorable exchanges rates, partially offset by higher energy sales volumes.
Operating Expenses. The variance was driven primarily by:
a $105 million decrease in Brazil due to exchange rates and lower purchased power costs, partially offset by higher variable costs;
an $88 million decrease in Central America due to lower fuel costs; and
a $31 million decrease in Peru due to lower hydrocarbon royalties, purchased power costs and fuel consumption and change in exchange rates.
Partially offset by:
a $25$66 million increase from new wind and solar generation placed in Ecuador due to an asset impairment loss, higher fuel consumption,service and provision for asset retirement obligation.
Other Income and Expenses, net. The variance is primarily due to lower interest income in Brazil and lower equity earnings in NMC, as a result of lower average MTBE and methanol prices, and lower MTBE sales volumes, partially offset by lower butane costs.
Income Tax Expense. The variance was primarily due to approximately $373 million of incremental tax expense in 2014 resulting from the decision to repatriate all cumulative historical undistributed foreign earnings. The effective tax rates for the years ended December 31, 2015 and 2014 were 24.3 percent and 87.3 percent, respectively. The decrease in the effective tax rate was primarily due to the tax expense associated with the repatriation decision, partially offset by the favorable adjustment related to the merger of two Chilean subsidiaries recorded in 2014.
Year Ended December 31, 2014 as Compared to 2013
International Energy’s results were negatively impacted by higher tax expense resulting from the decision to repatriate historical undistributed foreign earnings, unfavorable hydrology and exchange rates in Brazil and an unplanned outage in Chile, partially offset by higher equity earnings in NMC and a 2013 net currency remeasurement loss in Latin America. The following is a detailed discussion of the variance drivers by line item.

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Operating Revenues. The variance was driven primarily by:
a $44 million decrease in Peru as a result of lower sales volumes and exchange rates;
a $35 million decrease in Brazil due to exchange rates and lower sales volumes partially offset by higher average prices;
a $27 million decrease in Chile as a result of lower sales volumes due to an unplanned outage, and lower average prices; and
a $25 million decrease in Argentina due to exchange rates and lower average prices.improved wind production.
Operating Expenses. The variance was driven primarily by:
a $75$130 million increase in Braziloperating expenses due to higher purchased power as a resultgrowth of unfavorable hydrology, partially offset by exchange rates.
Partially offset by:
a $38 million decrease in Peru as a result of lower purchased power, transmission, and royalty costs;REC Solar; and
a $26$36 million decreaseincrease in Argentinaoperating expenses due to exchange ratesnew wind and lower purchased power and fuel consumption.solar generation placed in service.
Other Income and Expenses, netExpenses.. The variance is primarilywas due to a 2013 net currency remeasurement loss$71 million pretax impairment charge related to certain equity method investments in Latin America, higher interest incomewind projects. See Note 12 to the Consolidated Financial Statements, "Investments in Brazil, and higher equity earnings in NMC as a result of increased MTBE and methanol sales volumes, partially offset by lower average prices and higher butane costs.Unconsolidated Affiliates," for additional information.
Income Tax Expense. Benefit.The variance was primarily due to approximately $373 milliona decrease in pretax income and the impact of incrementalproduction tax expense in 2014 resulting from the decision to repatriate all cumulative historical undistributed foreign earnings. The effective tax ratescredits (PTCs) for the years ended December 31, 2014 and 2013 were 87.3 percent and 28.3 percent, respectively. The increase in the effective tax rate was also primarily due to the tax expense associated with the repatriation decision.renewables portfolio.
Matters Impacting Future International Energy Results
International Energy's operations include conventional hydroelectric power generation facilities located in Brazil where water reservoirs are at abnormally low levels due to a lack of rainfall. Weather and economic conditions within Brazil have resulted in higher energy prices, a reduction in electricity demand and unfavorable impacts to the exchange rate of Brazil's currency. These weather and economic conditions have also resulted in lawsuits brought to the Brazilian courts by certain hydroelectric generators to limit the financial exposure to the generators. International Energy's earnings and future cash flows could continue to be adversely impacted by a further sustained period of low reservoir levels, a further decline of economic conditions within Brazil, or from the outcome of legal matters in the Brazilian courts.
International Energy's equity earnings from NMC reflect sales of methanol and MTBE, which generate margins that are directionally correlated with crude oil prices and the recent decline in crude oil prices have reduced the equity earnings realized from NMC. Continued weakness in the market price of Brent crude oil and related commodities will likely result in a further decline in equity earnings from NMC.
On February 18, 2016, Duke Energy announced it had initiated a process to divest the International Energy business segment, excluding the equity method investment in NMC. Duke Energy is in the preliminary stage and no binding or non-binding offers have been requested or submitted. Duke Energy can provide no assurance that this process will result in a transaction and there is no specific timeline for execution of a potential transaction. If the potential of a sale were to progress, it could result in classification of International Energy as assets held for sale and as a discontinued operation. As of December 31, 2015, the International Energy segment had a carrying value of approximately $2.7 billion, adjusted to include the cumulative foreign currency translation losses currently classified as accumulated other comprehensive income.

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Commercial Portfolio
  Years Ended December 31,
     Variance
   Variance
     2015 vs.
   2014 vs.
(in millions)  2015
 2014
 2014
 2013
 2013
Operating Revenues  $301
 $255
 $46
 $260
 $(5)
Operating Expenses  353
 441
 (88) 425
 16
Gains (Losses) on Sales of Other Assets and Other, net  1
 
 1
 (23) 23
Operating Loss(51) (186) 135
 (188) 2
Other Income and Expense, net  6
 18
 (12) 13
 5
Interest Expense  44
 58
 (14) 61
 (3)
Loss Before Income Taxes  (89) (226) 137
 (236) 10
Income Tax Benefit(92) (171) 79
 (148) (23)
Less: Loss Attributable to Noncontrolling Interests  (1) 
 (1) 
 
Segment Income (Loss)$4
 $(55) $59
 $(88) $33
          
Coal-fired plant production, GWh  
 867
 (867) 1,644
 (777)
Renewable plant production, GWh  5,577
 5,462
 115
 5,111
 351
Total Commercial Portfolio production, GWh  5,577
 6,329
 (752) 6,755
 (426)
Net proportional MW capacity in operation  1,943
 1,370
 573
 2,031
 (661)
Year Ended December 31, 2015 as Compared to 2014
Commercial Portfolio’sRenewables' results were positively impacted by the 2014 impairment recorded for an intangible asset and new solar and wind generation placed in service, partially offset by unfavorable wind patterns. The following is a detailed discussion of the variance drivers by line item.
Operating Revenues. The variance was driven primarily by:
a $41 million increase in electric revenues due to the acquisition of REC Solar; and
a $15$27 million increase in electric revenues from new solar and wind generation placed in service.
Partially offset by:
an $18 million decrease in electric revenues due to lower wind production.
Operating Expenses. The variance was driven primarily byby:
a $48 million increase in operating expenses due to the $94acquisition of REC Solar; and
a $33 million pretax impairment relatedincrease in operating expenses due to Ohio Valley Electric Corporation (OVEC)new wind and solar generation placed in 2014.service.
Other Income and Expense, net.Expenses. The variance was primarily due to lower equity earnings in the renewables portfolio due to lower wind production.
Interest Expense. The variance was driven primarily bydue to an increase in capitalized interest in 2015 from increasedhigher spending on wind and solar projects.

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Income Tax Benefit. The variance iswas primarily due to a decrease in pretax lossesincome and changes in state deferred taxes. The effective tax rates for the years ended December 31, 2015 and 2014 were 103.4 percent and 75.5 percent, respectively. The increase in the effective tax rate is primarily due to the impact of the production tax credits for the renewables portfolio, partially offset by changes to state apportionment factors on deferred taxes due to the Disposal Group salePTCs.
Matters Impacting Future Commercial Renewables Results
Changes or variability in assumptions used in calculating the fair value of the Commercial Renewables reporting units for goodwill testing purposes including but not limited to, legislative actions related to tax credit extensions, long-term growth rates and discount rates, could significantly impact the estimated fair value of the Commercial Renewables reporting units. In the event of a significant decline in the estimated fair value of the Commercial Renewables reporting units, goodwill impairment charges could be recorded. The carrying value of goodwill within Commercial Renewables was approximately $122 million at December 31, 2016.

Persistently low market pricing for wind resources, primarily in the Energy Reliability Council of Texas West market, and the future expiration of tax incentives including Investment Tax Credits (ITCs) and PTCs could result in adverse impacts to the future results of Commercial Renewables.
Other
 Years Ended December 31,
     Variance
   Variance
     2016 vs.
   2015 vs.
(in millions)2016
 2015
 2015
 2014
 2014
Operating Revenues$117
 $135
 $(18) $116
 $19
Operating Expenses604
 409
 195
 528
 (119)
Gains on Sales of Other Assets and Other, net23
 18
 5
 6
 12
Operating Loss(464) (256) (208) (406) 150
Other Income and Expenses75
 98
 (23) 174
 (76)
Interest Expense693
 393
 300
 409
 (16)
Loss Before Income Taxes(1,082) (551) (531) (641) 90
Income Tax Benefit(446) (262) (184) (314) 52
Less: Income attributable to Noncontrolling Interests9
 10
 (1) 5
 5
Net Expense$(645) $(299) $(346) $(332) $33
Year Ended December 31, 20142016 as Compared to 20132015
Commercial Portfolio’s results were impactedOther’s higher net expense was driven by higher production tax credits generation,costs related to the Piedmont acquisition, higher productioncharitable donations and lower operating costs byhigher interest expense related to the renewables business and a prior-year loss recognized on certain renewables projects, partially offset by an impairment recorded for an intangible asset.Piedmont acquisition financing. The following is a detailed discussion of the variance drivers by line item.
Operating Revenues.Revenues. The variancedecrease was driven primarily by:
an $8 million decrease in electric revenues for the Beckjord station, which is not includeddue to customer credits recorded in the Disposal Group, driven from lower production as units have been retired;
a $7 million decrease in net mark-to-market revenues on non-qualifying power hedge contracts.
Partially offset by:
a $16 million increase in electric revenues from higher production infourth quarter related to Piedmont merger commitments. See Note 2 to the renewables portfolio.Consolidated Financial Statements, "Acquisitions and Dispositions," for additional information.

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Operating Expenses. The varianceincrease was driven primarily by:
a $94 million increase drivendue to transaction and integration costs associated with the Piedmont acquisition and increased donations to the Duke Energy Foundation, partially offset by an impairment related to OVEC. The impairment reduced the carrying amount of OVEC to zero.
Partially offset by:
an $18 milliona decrease in depreciation drivenseverance accruals. The Duke Energy Foundation is a nonprofit organization funded by discontinued amortization of an intangible assetDuke Energy shareholders that was impairedmakes charitable contributions to selected nonprofits and written off in 2014 and extensions on the projected useful lives of assets in the renewable portfolio;
a $17 million decrease in fuel expense for the Beckjord station driven by lower cost of coal from decreased production as units have been retired;
a $16 million decrease related to a 2013 legal settlement reserve related to previously disposed businesses;
a $10 million decrease in general and administrative costs;
a $9 million decrease in operations and maintenance expense for the renewables portfolio driven primarily by development cost reductions; and
a $6 million decrease in property tax expense driven by cost reductions in the renewables portfolio resulting from a property tax abatement that went into effect in the current year.
Losses on Sales of Other Assets and Other, net. The variance is attributable to a loss recognized on the sale of certain renewable development projects in 2013.government subdivisions.
Other Income and Expense.Expenses. The variance was primarily due to a net gain recognized forlower earnings from NMC, which was recast to Other following the sale of certain renewable development assetsthe International disposal group (See Note 3 to the Consolidated Financial Statements, "Business Segments"), partially offset by higher returns on investments that support employee benefit obligations.
Interest Expense. The increase was primarily due to Piedmont acquisition financing, including bridge facility costs and increased equity earnings from higher production inlosses on forward-starting interest rate swaps. For additional information see Notes 2 and 14 to the renewable wind portfolio.Consolidated Financial Statements, "Acquisitions and Dispositions" and "Derivatives and Hedging," respectively.
Income Tax Benefit. The variance was primarily due to changesan increase in state deferred taxes and higher productionpretax losses, partially offset by a decrease in the effective tax credits in 2014 for the Renewables portfolio.rate. The effective tax rates for the years ended December 31, 20142016 and 20132015 were 75.541.2 percent and 62.847.5 percent, respectively. The decrease in the effective tax rate was primarily due to the benefit from legal entity restructuring recorded in 2015.
Other
  Years Ended December 31,
     Variance
   Variance
     2015 vs.
   2014 vs.
(in millions)  2015
 2014
 2014
 2013
 2013
Operating Revenues  $123
 $105
 $18
 $175
 $(70)
Operating Expenses  382
 322
 60
 457
 (135)
Gains (Losses) on Sales of Other Assets and Other, net  17
 6
 11
 (3) 9
Operating Loss  (242) (211) (31) (285) 74
Other Income and Expense, net  20
 45
 (25) 131
 (86)
Interest Expense  393
 400
 (7) 416
 (16)
Loss Before Income Taxes  (615) (566) (49) (570) 4
Income Tax Benefit  (303) (237) (66) (335) 98
Less: Income attributable to Noncontrolling Interests  10
 5
 5
 3
 2
Net Expense  $(322) $(334) $12
 $(238) $(96)
Year Ended December 31, 2015 as Compared to 2014
Other’s results were impactedlower net expense was driven by an impairment charge in 2014 related to the Ohio Valley Electric Corporation (OVEC) and lower Progress Energy merger costs, an increase in income tax benefit, severance accruals, and higher North Carolina franchise taxes.partially offset by lower earnings from NMC. The following is a detailed discussion of the variance drivers by line item.
Operating Revenues. The increase was primarily due to higher revenues from OVEC, which was shifted from the Commercial Portfolio segment to Other subsequent to the sale of the Disposal Group (see Note 3 to the Consolidated Financial Statements, "Business Segments.")OVEC.
Operating Expenses. The increasedecrease was primarily due to severance accruals, higher chargesan impairment charge in the current year due2014 related to the shift of the residual Midwest Generation business from the Commercial Portfolio segment to Other in 2015 (see Note 3 to the Consolidated Financial Statements, "Business Segments,") and higher North Carolina franchise taxes, partially offset byOVEC, lower charges related to the Progress Energy merger, and higher prior-yearprior year captive insurance loss experience.losses, partially offset by severance accruals and higher North Carolina franchise taxes.
Gains on Sales of Other Assets and Other, net. The variance was primarily due to thea gain on sale of telecommunication leases.

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PART II

Other Income and Expenses, net. The variance was primarily due to lower earnings from NMC, lower returns on investments that support employee benefit obligations and a gain on an investment sale in the prior year and lower investment income at Bison Insurance Company Limited,2014, partially offset by interest income from the resolution of an income tax matter.

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PART II

Income Tax Benefit. The variance was primarily due to an increasea decrease in pretax losses and higher effective tax rate.losses. The effective tax rates for the years ended December 31, 2015 and 2014 were 49.347.5 percent and 41.949.0 percent, respectively.
Year Ended December 31, 2014 as Compared to 2013
Other’s results were negatively impacted by a decrease in income tax benefit. The following is a detailed discussion of the variance drivers by line item.
Operating Revenues. The decrease was primarily due to mark-to-market activity of mitigation sales related to the Progress Energy merger.
Operating Expenses. The decrease was primarily due to lower charges related to the Progress Energy merger and prior year Crescent Resources LLC (Crescent) litigation reserve, partially offset by unfavorable loss experience at Bison.
Other Income and Expenses. The decrease was primarily due to a gain on the sale of Duke Energy’s 50 percent ownership in DukeNet Communications Holdings, LLC (DukeNet) in 2013, partially offset by a current year investment sale gain and higher investment income at Bison.
Interest Expense. The variance was due primarily to lower interest on long-term debt resulting from debt maturities and new debt issued at lower rates.
Income Tax Benefit. The variance was primarily due to a state tax benefit recognized in 2013. The effective tax rates for the years ended December 31, 2014 and 2013 were 41.9 percent and 58.6 percent, respectively.
Matters Impacting Future Other Results
Included in Other is Duke Energy Ohio’sOhio's 9 percent ownership interest in OVEC, which owns 2,256 MW of coal fired generation capacity. As a counterparty to an inter-company power agreement (ICPA), Duke Energy Ohio has a contractual arrangement to receive entitlements to capacity and energy from OVEC’s power plants through June 2040 commensurate with its power participation ratio, which is equivalent to Duke Energy Ohio's ownership interest. Costs, including fuel, operating expenses, fixed costs, debt amortization, and interest expense, are allocated to counterparties to the ICPA, including Duke Energy Ohio, based on their power participation ratio. The value of the ICPA is subject to variability due to fluctuations in power prices and changes in OVEC’s costs of business. Deterioration in the credit quality or bankruptcy of one or more parties to the ICPA could increase the costs of OVEC. In addition, certain proposed environmental rulemaking costs could result in future increased cost allocations.
The retired Beckjord generating station (Beckjord), previously an asset of Commercial Portfolio, became an asset of Other after the sale of the Disposal Group. Beckjord, a nonregulated facility retired during 2014, is not subject to the recently enacted EPA rule related to the disposal of CCR from electric utilities. However, if costs are incurred as a result of environmental regulations or to mitigate risk associated with on-site storage of coal ash, the costs could have an adverse impact on Other's financial position, results of operations and cash flows.
Earnings from an equity method investment in NMC reflect sales of methanol and MTBE, which generate margins that are directionally correlated with Brent crude oil prices. The recent decline in crude oil prices have reduced the earnings realized from NMC. Further weakness in the market price of Brent crude oil and related commodities may result in a further decline in earnings. Duke Energy's economic ownership interest will decrease from 25 percent to 17.5 percent upon successful startup of NMC's polyacetal production facility, which is expected to occur in the second quarter of 2017.
U.S. federal tax reform has become an important priority of the current Congress and Administration. Any substantial revision to the U.S. tax code, including a loss of the ability to deduct interest expense, could adversely impact Duke Energy's future earnings, cash flows or financial position.
(LOSS) INCOME (LOSS) FROM DISCONTINUED OPERATIONS, NET OF TAX
Year Ended December 31, 2016 as Compared to 2015
The variance was primarily driven by the loss on the disposal of Duke Energy's Latin American generation business and an impairment charge related to certain assets in Central America, partially offset by a tax benefit related to historic unremitted foreign earnings and immaterial out of period tax adjustments unrelated to the Disposal Groups. See Note 2 to the Consolidated Financial Statements, "Acquisitions and Dispositions," for additional information.
Year Ended December 31, 2015 as Compared to 2014
The variance was primarily driven by the 2014 impairment and unrealized mark-to-market losses on economic hedges, and favorable operating results in 2015, partially offset by a litigation reserve recorded in 2015, as discussed in Note 5, "Commitments and Contingencies," to the Consolidated Financial Statements. Operating results in 2015 were favorable primarily due to higher PJM capacity revenues related to higher average cleared capacity auction pricing, increased generation margins and lower depreciation expense. Included in the variance is the impact of ceasing depreciation on the assets of the Disposal Group beginning in the second quarter of 2014. The foregone depreciation for the years ended December 31, 2015, and December 31, 2014, was approximately $40 million and $117 million, respectively.
Year Ended December 31, 2014 as Compared to 2013
The variance was primarily due to the 2014 $929 million pretax write-downimpairment of the carrying amountMidwest Generation Disposal Group and a 2014 tax charge related to historic unremitted foreign earnings, partially offset by lower operating results of the assetsInternational Disposal Group in 2015 compared to 2014. Operating results for the International Disposal Group in 2015 were impacted by lower demand, unfavorable hydrology in Brazil, changes in foreign currency exchange rates, the absence of a 2014 tax benefit related to the estimated fair valuereorganization of the Disposal Group, based on the transaction price includedChilean operations and lower dispatch in the purchase sale agreement (PSA), less estimated costsCentral America due to sell and a $134 million pretax mark-to-market loss on economic hedges for the Disposal Group.increased competition.
DUKE ENERGY CAROLINAS
Introduction
Management’s Discussion and Analysis should be read in conjunction with the accompanying Consolidated Financial Statements and Notes for the years ended December 31, 2016, 2015 2014 and 2013.2014.
Basis of Presentation
The results of operations and variance discussion for Duke Energy Carolinas is presented in a reduced disclosure format in accordance with General Instruction (I)(2)(a) of Form 10-K.
Results of Operations

  Years Ended December 31,
(in millions)  2015
 2014
 Variance
Operating Revenues  $7,229
 $7,351
 $(122)
Operating Expenses  5,268
 5,456
 (188)
Losses on Sales of Other Assets and Other, net  (1) 
 (1)
Operating Income  1,960
 1,895
 65
Other Income and Expense, net  160
 172
 (12)
Interest Expense  412
 407
 5
Income Before Income Taxes  1,708
 1,660
 48
Income Tax Expense  627
 588
 39
Net Income  $1,081
 $1,072
 $9

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PART II

Results of Operations
 Years Ended December 31,
(in millions)2016
 2015
 Variance
Operating Revenues$7,322
 $7,229
 $93
Operating Expenses5,255
 5,268
 (13)
Loss on Sales of Other Assets and Other, net(5) (1) (4)
Operating Income2,062
 1,960
 102
Other Income and Expenses162
 160
 2
Interest Expense424
 412
 12
Income Before Income Taxes1,800
 1,708
 92
Income Tax Expense634
 627
 7
Net Income$1,166
 $1,081
 $85
The following table shows the percent changes in GWh sales and average number of customers for Duke Energy Carolinas. The below percentages for retail customer classes represent billed sales only. Total sales includes billed and unbilled retail sales and wholesale sales to incorporated municipalities and to public and private utilities and power marketers. Amounts are not weather normalized.
(Decrease) increase over prior year 2015 2014
Increase (Decrease) over prior year2016 2015
Residential sales (0.2)% 4.0 %0.1 % (0.2)%
General service sales 1.0 % 2.4 %0.7 % 1.0 %
Industrial sales 2.6 % 2.4 %(0.9)% 2.6 %
Wholesale power sales1.5 % 5.7 %9.8 % 1.5 %
Joint dispatch sales(44.8)% (25.7)%(2.3)% (44.8)%
Total sales (0.3)% 2.2 %1.8 % (1.3)%
Average number of customers 1.3 % 1.0 %1.4 % 1.3 %
Year Ended December 31, 20152016 as Compared to 20142015
Operating Revenues. The variance was driven primarily by:
a $219 million decrease in fuel revenues driven primarily by lower natural gas and coal prices, as well as change in fuel mix, partially offset by an increase in demand from customers. Fuel revenues represent sales to retail and wholesale customers; and
a $78 million decrease in revenues to recover gross receipts taxes due to the North Carolina Tax Simplification and Rate Reduction Act, which terminated the collection of North Carolina gross receipts tax effective July 1, 2014.
Partially offset by:
a $78$91 million increase in retail pricing and rate riders, which primarily reflectsrider revenues, including increased revenues related to energy efficiency programs and the second year base rate step-up fromexpiration of the 2013 SouthNorth Carolina rate case;cost of removal decrement rider;
a $51$58 million increase fromin retail sales, growth;net of fuel revenues, to retail customers due to more favorable weather compared to the prior year; and
a $40$45 million increase in wholesale power revenues, net of sharing, primarily due to additional volumes fordemand from customers served under long-term contracts.
Partially offset by:
a $106 million decrease in fuel revenues, driven primarily by lower fuel prices included in electric retail and wholesale rates.
Operating Expenses. The variance was driven primarily by:
a $252an $84 million decrease in fuel expense (including purchased power) primarily relateddue to lower natural gas and coal prices, as well as changechanges in fuel mix; and
a $47 million decrease in property and other tax expenses primarily due to the termination of the collection of the North Carolina gross receipts tax as mentioned above, partially offset by higher property tax expense.generation mix.
Partially offset by:
a $71$41 million increase in operations and maintenance expensesexpense primarily due to higher expenses at generating plants, including the prior-year benefit of the adoption of nuclear outage levelization, severance expensescosts associated with merger commitments related to cost saving initiatives,the Piedmont acquisition in 2016, increased employee benefit costs, higher energy efficiency program costs, and higher distribution maintenance expenses,storm restoration costs, partially offset by a 2014 litigation reserve related to the criminal investigation of the Dan River coal ash spill,lower severance expenses, lower expenses at generating plants, lower costs associated with the Progress Energy merger and repairs and remediation expenses associated with the Dan River coal ash discharge in 2014; anddecreased corporate costs;
a $42$24 million increase in depreciation and amortization expense due to additional plant in service; and
a $7 million increase in property and other taxes primarily due to higher depreciation as a result of additional plant in service, partially offset by lower nuclear decommissioning costs and lower amortization of certain regulatory assets.property taxes.
Other Income and Expenses, netInterest Expense. The variance was primarily due to a decreasehigher debt outstanding in recognition of post in-service equity returns for projects that had been completed prior to being reflected in customer rates.the current year.
Income Tax Expense. The variance iswas primarily due to an increase in thepretax income, partially offset by a lower effective tax rate and higher pretax income.rate. The effective tax ratesrate for the years ended December 31, 2016 and 2015 and 2014 were 36.735.2 percent and 35.436.7 percent, respectively. The increasedecrease in the effective tax rate iswas primarily due to favorable audit settlements and changes in apportionment related to state incomethe impact of favorable tax recorded in 2014, and a lower tax benefit related to the manufacturing deduction in 2015 as compared to 2014, partially offset by the non-deductible litigation reserve related to the criminal investigation of the Dan River coal ash spill recorded in 2014.return true-ups.

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PART II

Matters Impacting Future Results
An order from regulatory authorities disallowing recovery of costs related to closure of ash impoundments could have an adverse impact on Duke Energy Carolinas' financial position, results of operations and cash flows. See Notes 4 and 9 to the Consolidated Financial Statements, “Regulatory Matters” and "Asset Retirement Obligations," respectively, for additional information.
On May 18, 2016, the NCDEQ issued proposed risk classifications for all coal ash surface impoundments in North Carolina. All ash impoundments not previously designated as high priority by the Coal Ash Act were designated as intermediate risk. Certain impoundments classified as intermediate risk, however, may be reassessed in the future as low risk pursuant to legislation signed by the former North Carolina governor on July 14, 2016. Duke Energy Carolinas' estimated AROs related to the closure of North Carolina ash impoundments are based upon the mandated closure method or a probability weighting of potential closure methods for the impoundments that may be reassessed to low risk. As the final risk ranking classifications in North Carolina are delineated, final closure plans and corrective action measures are developed and approved for each site, the closure work progresses, and the closure method scope and remedial action methods are determined, the complexity of work and the amount of coal combustion material could be different than originally estimated and, therefore, could materially impact Duke Energy Carolinas' financial position. See Note 9 to the Consolidated Financial Statements, “Asset Retirement Obligations,” for additional information.
Duke Energy Carolinas is a party to multiple lawsuits and subject to fines and other penalties related to the Dan River coal ash release and operations at other North Carolina facilities with ash basins. The outcome of these lawsuits, fines and penalties could have an adverse impact on Duke Energy Carolinas’ financial position, results of operations and cash flows. See Note 5 to the Consolidated Financial Statements, “Commitments and Contingencies,” for additional information.
An order from regulatory authorities disallowing recoveryDuke Energy Carolinas intends to file a rate case in North Carolina in 2017 to recover costs of complying with CCR regulations and the Coal Ash Act, as well as costs relatedof capital investments in generation, transmission and distribution systems and any increase in expenditures subsequent to closure of ash impoundments could have an adverse impact onprevious rate cases. Duke Energy Carolinas' financial position, results of operations and cash flows. See Notes 4 and 9 toearnings could be adversely impacted if the Consolidated Financial Statements, “Regulatory Matters” and "Asset Retirement Obligations," respectively, for additional information.rate case is delayed or denied by the NCUC.

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On October 23, 2015, the EPA published in the Federal Register the CPP rule for regulating CO2 emissions from existing fossil fuel-fired EGUs. The CPP establishes CO2 emission rates and mass cap goals that apply to fossil fuel-fired generation. Under the CPP, states are required to develop and submit a final compliance plan, or an initial plan with an extension request, to the EPA by September 6, 2016, or no later than September 6, 2018, with an approved extension. These state plans are subject to EPA approval, with a federal plan applied to states that fail to submit a plan to the EPA or if a state plan is not approved. Legal challenges to the CPP have been filed by stakeholders and motions to stay the requirements of the rule pending the outcome of the litigation have been filed. The U.S. Supreme Court granted a Motion to Stay in February 2016, effectively blocking enforcement of the rule until legal challenges are resolved. Final resolution of these legal challenges could take several years. Compliance with CPP could cause the industry to replace coal generation with natural gas and renewables, especially in states that have significant CO2 reduction targets under the rule. Costs to operate coal-fired generation plants continue to grow due to increasing environmental compliance requirements, including ash management costs unrelated to CPP, and this may result in the retirement of coal-fired generation plants earlier than the current useful lives. Duke Energy Carolinas continues to evaluate the need to retire generating facilities and plans to seek regulatory recovery, where appropriate, for amounts that have not been recovered upon asset retirements. However, recovery is subject to future regulatory approval, including the recovery of carrying costs on remaining book values, and therefore cannot be assured. In addition, Duke Energy Carolinas could incur increased fuel, purchased power, operation and maintenance, and other costs for replacement generation as a result of this rule. Duke Energy Carolinas cannot predict the outcome of these matters.
PROGRESS ENERGY
 Introduction
Management’s Discussion and Analysis should be read in conjunction with the accompanying Consolidated Financial Statements and Notes for the years ended December 31, 2016, 2015 2014 and 2013.2014.
Basis of Presentation
The results of operations and variance discussion for Progress Energy is presented in a reduced disclosure format in accordance with General Instruction (I)(2)(a) of Form 10-K.
Results of Operations
Years Ended December 31,Years Ended December 31,
(in millions) 2015
 2014
 Variance
2016
 2015
 Variance
Operating Revenues $10,277
 $10,166
 $111
$9,853
 $10,277
 $(424)
Operating Expenses 8,142
 8,159
 (17)7,737
 8,142
 (405)
Gains on Sales of Other Assets and Other, net 25
 11
 14
25
 25
 
Operating Income 2,160
 2,018
 142
2,141
 2,160
 (19)
Other Income and Expense, net 97
 77
 20
Other Income and Expenses114
 97
 17
Interest Expense 670
 675
 (5)689
 670
 19
Income Before Income Taxes 1,587
 1,420
 167
1,566
 1,587
 (21)
Income Tax Expense 522
 540
 (18)527
 522
 5
Income from Continuing Operations 1,065
 880
 185
1,039
 1,065
 (26)
Loss from Discontinued Operations, net of tax (3) (6) 3
Income (Loss) from Discontinued Operations, net of tax2
 (3) 5
Net Income 1,062
 874
 188
1,041
 1,062
 (21)
Less: Net Income Attributable to Noncontrolling Interests 11
 5
 6
10
 11
 (1)
Net Income Attributable to Parent $1,051
 $869
 $182
$1,031
 $1,051
 $(20)
Year Ended December 31, 20152016 as Compared to 20142015
Operating Revenues. The variance was driven primarily by:
a $118$638 million decrease in fuel revenues due to lower fuel prices and changes in generation mix, partially offset by increased capacity rates to retail customers at Duke Energy Florida; and
a $17 million decrease in retail sales, net of fuel revenue, due to unfavorable weather compared to the prior year at Duke Energy Florida.
Partially offset by:
a $188 million increase in rider revenues, including increased revenues related to energy efficiency programs, the additional ownership interest in certain generating assets acquired from NCEMPA in the third quarter of 2015, nuclear asset securitization revenues beginning in 2016, and an increase in energy conservation and environmental cost recovery clause revenues, partially offset by lower nuclear cost recovery clause (NCRC) rider revenues due to suspending recovery for the Levy nuclear project in 2015; and
a $34 million increase in wholesale power revenues primarily due to a newthe NCEMPA contract, effective August 1, 2015, coupled with increased overall demand rates and higherpartially offset by lower peak demand at Duke Energy Progress; and
an $82 million increase in fuel revenues driven primarily by increased demand at Duke Energy Progress and Duke Energy Florida. Fuel revenues represent sales to retail and wholesale customers.
Partially offset by:
a $113 decrease in rider revenues primarily due to a decreasecontracts that expired in the nuclear cost recovery clause as a result of suspending Levy recovery, a decrease in energy conservation cost recovery clause and environmental cost recovery clause revenues due to lower recovery ratesprior year at Duke Energy Florida, partially offset by higher retail pricing and rate riders at Duke Energy Progress, which primarily reflect increased revenues related to the energy efficiency programs and the second year base rate step-up from the 2013 North Carolina retail rate case.Florida.
Operating Expenses. The variance was driven primarily by:
a $29$581 million increasedecrease in fuel used in electric generation and purchased powerexpense primarily due to recovery of prior year under-collections oflower natural gas prices, changes in generation mix, lower deferred fuel expense, and increased purchased power,lower generation costs, partially offset by lower fuel prices at Duke Energy Florida; and

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a $28 million increase in impairment charges primarily driven by a 2014 reversal of a prior-year impairment at Duke Energy Progress and current year impairments at Duke Energy Florida.increased purchased power.
Partially offset by:
a $37$96 million decreaseincrease in depreciation and amortization expense primarily due to additional plant in service, including the additional ownership interest in generation assets acquired from NCEMPA; and
an $84 million increase in operations and maintenance expenses. For Duke Energy Progress, this was primarilyexpense due to a 2014 litigation reservecosts associated with merger commitments related to the criminal investigation of the management of North Carolina coal ash basins, lowerPiedmont acquisition in 2016, higher employee benefit costs, and higher storm restoration costs and a favorable pension expense adjustment recorded in 2015, partially offset by higher nuclear refueling outage expenses, including the prior-year benefit of the adoption of nuclear outage levelization, due to three refueling outages in 2015 compared to one outage during the same period in 2014, higher nuclear costs related to additional ownership interest in assets acquired from NCEMPA, and severance expenses related to cost savings initiatives. For Duke Energy Florida, this was primarily due to a decrease in expenses related to costs that were recoverable through the energy conservation cost recovery clause and environmental cost recovery clause; a decrease in employee and executive benefits; partially offset by an increase in expenses related to various information technology projects;
a $25 million decrease in property and other taxes primarily due to the North Carolina Tax Simplification and Rate Reduction Act, which terminated the collection of North Carolina gross receipts tax effective July 1, 2014, at Duke Energy Progress, partially offset by higher property tax rateslower nuclear costs and higher revenue related taxesseverance costs at Duke Energy Florida;Progress and
a $12 million decrease in depreciation and amortization expenses primarily due lower costs related to reductions in amounts recovered through the nuclear cost recovery clause and the environmental cost recovery clausesfleet maintenance work at Duke Energy Florida, partially offset by higher depreciation related to additional plant in service at Duke Energy Progress.
Gains on Sales of Other Assets and Other, net. The variance was primarily due to the gain on sale of telecommunication leases.Florida.
Other Income and Expenses, net.Expenses. The variance is due to higher AFUDC equity primarily due to nuclear plant expendituresreturn on certain projects at Duke Energy Progress.Florida.

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Interest Expense. The variance is due to higher debt outstanding, partially offset by higher AFUDC debt return on certain projects at Duke Energy Florida.
Income Tax Expense. The variance was primarily due to a lowerhigher effective tax rate.rate, partially offset by lower pretax income. The effective tax ratesrate for the yearstwelve months ended December 31, 2016 and 2015 were 33.7 percent and 2014 were 32.9 percent, and 38.0 percent, respectively. The decrease in the effective tax rate was primarily due to the non-deductible litigation reserve related to the criminal investigation of the management of the coal ash basins in 2014, an increase in AFUDC equity in 2015, state tax benefits from corporate restructuring in 2015, and the release of tax reserves in 2015 due to expired statutes.
Matters Impacting Future Results
An order from regulatory authorities disallowing recovery of costs related to closure of ash impoundments could have an adverse impact on Progress Energy’s financial position, results of operations and cash flows. See Notes 4 and 9 to the Consolidated Financial Statements, “Regulatory Matters” and "Asset Retirement Obligations," respectively, for additional information.
On May 18, 2016, the NCDEQ issued proposed risk classifications for all coal ash surface impoundments in North Carolina. All ash impoundments not previously designated as high priority by the Coal Ash Act were designated as intermediate risk. Certain impoundments classified as intermediate risk, however, may be reassessed in the future as low risk pursuant to legislation signed by the former North Carolina governor on July 14, 2016. Duke Energy Progress' estimated AROs related to the closure of North Carolina ash impoundments are based upon the mandated closure method or a probability weighting of potential closure methods for the impoundments that may be reassessed to low risk. As the final risk ranking classifications in North Carolina are delineated, final closure plans and corrective action measures are developed and approved for each site, the closure work progresses, and the closure method scope and remedial action methods are determined, the complexity of work and the amount of coal combustion material could be different than originally estimated and, therefore, could materially impact Duke Energy Progress' financial position. See Note 9 to the Consolidated Financial Statements, “Asset Retirement Obligations,” for additional information.
Duke Energy Progress is a party to multiple lawsuits and subject to fines and other penalties related to operations at certain North Carolina facilities with ash basins. The outcome of these lawsuits, fines and penalties could have an adverse impact on Progress Energy’s financial position, results of operations and cash flows. See Note 5 to the Consolidated Financial Statements, “Commitments and Contingencies,” for additional information.
AnIn the fourth quarter of 2016, Hurricane Matthew caused historic flooding, extensive damage and widespread power outages within the Duke Energy Progress service territory. Duke Energy Progress filed a petition with the NCUC requesting an accounting order to defer approximately $140 million of incremental operation and maintenance and capital costs incurred in response to Hurricane Matthew and other significant 2016 storms. The NCUC has not ruled on the petition. A final order from regulatory authorities disallowingthe NCUC that disallows the deferral and future recovery of all or a significant portion of the incremental storm restoration costs related to closure of ash impoundmentsincurred could haveresult in an adverse impact on Progress Energy’sEnergy's financial position, results of operations and cash flows. See Notes 4 and 9
Duke Energy Progress intends to the Consolidated Financial Statements, “Regulatory Matters” and "Asset Retirement Obligations," respectively, for additional information.
The FPSC approved an agreement on all securitization-related issues and issuedfile a final financing orderrate case in North Carolina in 2017 to securitize the Crystal River Unit 3 Regulatory asset with low-cost securities. Securitization will replace base rate recovery and result in a lower rate impact to customers. Securitization of therecover costs of complying with CCR regulations and the retired Crystal River Unit 3 Nuclear Plant would resultCoal Ash Act, as well as costs of capital investments in an initial acceleration of cash, followed by a reductiongeneration, transmission and distribution systems and any increase in expenditures subsequent to previous rate cases. Progress Energy's future results of operations and ongoing cash flows as it would no longer earn an equity return on these costs. Under a previous settlement agreement withearnings could be adversely impacted if the FPSC,rate case is delayed or denied by the allowed return on equity for Crystal River Unit 3 is limited to 70 percent of the approved return on equity, which is currently 10.5 percent. Progress Energy expects the securitization bonds to be issued in the first half of 2016.NCUC.
On October 23, 2015, the EPA published in the Federal Register the CPP rule for regulating CO2 emissions from existing fossil fuel-fired EGUs. The CPP establishes CO2 emission rates and mass cap goals that apply to fossil fuel-fired generation. Under the CPP, states are required to develop and submit a final compliance plan, or an initial plan with an extension request, to the EPA by September 6, 2016, or no later than September 6, 2018, with an approved extension. These state plans are subject to EPA approval, with a federal plan applied to states that fail to submit a plan to the EPA or if a state plan is not approved. Legal challenges to the CPP have been filed by stakeholders and motions to stay the requirements of the rule pending the outcome of the litigation have been filed. The U.S. Supreme Court granted a Motion to Stay in February 2016, effectively blocking enforcement of the rule until legal challenges are resolved. Final resolution of these legal challenges could take several years. Compliance with CPP could cause the industry to replace coal generation with natural gas and renewables, especially in states that have significant CO2 reduction targets under the rule. Costs to operate coal-fired generation plants continue to grow due to increasing environmental compliance requirements, including ash management costs unrelated to CPP, and this may result in the retirement of coal-fired generation plants earlier than the current useful lives. Progress Energy continues to evaluate the need to retire generating facilities and plans to seek regulatory recovery, where appropriate, for amounts that have not been recovered upon asset retirements. However, recovery is subject to future regulatory approval, including the recovery of carrying costs on remaining book values, and therefore cannot be assured. In addition, Progress Energy could incur increased fuel, purchased power, operation and maintenance, and other costs for replacement generation as a result of this rule. Progress Energy cannot predict the outcome of these matters.
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DUKE ENERGY PROGRESS
Introduction
Management’s Discussion and Analysis should be read in conjunction with the accompanying Consolidated Financial Statements and Notes for the years ended December 31, 2016, 2015 2014 and 2013.2014.

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PART II

Basis of Presentation
The results of operations and variance discussion for Duke Energy Progress is presented in a reduced disclosure format in accordance with General Instruction (I)(2)(a) of Form 10-K.
Results of Operations
Years Ended December 31,Years Ended December 31,
(in millions) 2015
 2014
 Variance
2016
 2015
 Variance
Operating Revenues $5,290
 $5,176
 $114
$5,277
 $5,290
 $(13)
Operating Expenses 4,269
 4,244
 25
4,194
 4,269
 (75)
Gains on Sales of Other Asset and Other, net 3
 3
 
3
 3
 
Operating Income 1,024
 935
 89
1,086
 1,024
 62
Other Income and Expense, net 71
 51
 20
Other Income and Expenses71
 71
 
Interest Expense 235
 234
 1
257
 235
 22
Income Before Income Taxes 860
 752
 108
900
 860
 40
Income Tax Expense 294
 285
 9
301
 294
 7
Net Income $566
 $467
 $99
$599
 $566
 $33
The following table shows the percent changes in GWh sales and average number of customers for Duke Energy Progress. The below percentages for retail customer classes represent billed sales only. Total sales includes billed and unbilled retail sales and wholesale sales to incorporated municipalities and to public and private utilities and power marketers. Amounts are not weather normalized.
(Decrease) increase over prior year 2015
 2014
Increase (Decrease) over prior year2016
 2015
Residential sales (1.4)% 5.1 %(1.5)% (1.4)%
General service sales 0.9 % 2.1 %0.2 % 0.9 %
Industrial sales (0.3)% (2.9)%(0.1)% (0.3)%
Wholesale power sales13.0 % (2.3)%18.4 % 13.0 %
Joint dispatch sales14.1 % 75.3 %17.7 % 14.1 %
Total sales 3.2 % 4.4 %6.4 % 3.2 %
Average number of customers 1.4 % 1.1 %1.3 % 1.4 %
Year Ended December 31, 20152016 as Compared to 20142015
Operating Revenues. The variance was driven primarily by:
a $100$206 million decrease in fuel revenues driven by lower natural gas prices and changes in generation mix;
a $17 million decrease in intercompany Joint Dispatch Agreement (JDA) revenues; and
a $5 million decrease in transmission revenues due to a settlement with customers that reduced the rate of return on equity.
Partially offset by:
a $150 million increase in rider revenues due to the purchase of NCEMPA’s ownership interest in certain generating assets and energy efficiency programs; and
a $65 million increase in wholesale power revenues primarily due to a newthe NCEMPA contract effective August 1, 2015, and increased demand rates charged along with higherpartially offset by lower peak demand;
a $34 million increase in retail pricing and rate riders, which primarily reflect increased revenues related to the energy efficiency programs and the second year base rate step-up from the 2013 North Carolina retail rate case; and
a $26 million increase in fuel revenues driven primarily by increased demand from wholesale and retail customers.
Partially offset by:
a $44 million decrease in revenues to recover gross receipts taxes due to the North Carolina Tax Simplification and Rate Reduction Act, which terminated the collection of North Carolina gross receipts tax effective July 1, 2014.demand.
Operating Expenses. The variance was driven primarily by:
a $199 million decrease in fuel expense primarily due to lower natural gas prices and changes in generation mix.

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Partially offset by:
a $61 million increase in depreciation and amortization expensesexpense primarily due to higher depreciation related to additional plant in service; and
an $18 million reversalservice, including the additional ownership interest in 2014 of a prior-year impairment. These charges related to planned transmission projects for which recovery is not expected, and certain cost associated with mitigation sales pursuant to merger settlement agreements with the FERC.
Partially offset by:generating assets acquired from NCEMPA;
a $34$51 million decrease in property and other taxes primarily due to the termination of the collection of the North Carolina gross receipts tax as mentioned above; and
an $18 million decreaseincrease in operations and maintenance expenses,expense primarily due to a 2014 litigation reserve related to the criminal investigation of the management of North Carolina coal ash basins, lower storm restoration costs and a favorable pension expense adjustment recorded in 2015, costs associated with merger commitments related to the Piedmont acquisition in 2016, higher storm restoration costs, and higher employee benefit costs, partially offset by higherlower nuclear refueling outage expenses, including the prior-year benefit of the adoptioncosts (net of nuclear outage levelization,levelization) due to three refuelingfewer outages in 2016 and lower severance costs; and
a $15 million increase in property and other taxes due to a 2015 compared to one outage during the same periodNorth Carolina Franchise Tax refund and increases in 2014, higher nuclear costs related to additional ownership interestcurrent year property taxes in assets acquired from NCEMPA,North Carolina and severance expenses in 2015 related to cost savings initiatives.

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South Carolina.
PART II

Other Income and Expenses, net.Interest Expense. The variance iswas due to higher AFUDC equity, primarily due to nuclear plant expenditures.debt outstanding.
Income Tax Expense. The variance was primarily due to an increase in pretax income, partially offset by a lower effective tax ratesrate. The effective tax rate for the years ended December 31, 2016 and 2015 and 2014 were 34.233.4 percent and 37.934.2 percent, respectively. The decrease in the effective tax rate was primarily due to the non-deductible litigation reserve related to the criminal investigationimpact of the management of the coal ash basinsfavorable tax return true-ups and a rate change in 2014, an increase in AFUDC equity, and the reduction of the North Carolina statutory corporate state income tax rate.Carolina.
Matters Impacting Future Results
An order from regulatory authorities disallowing recovery of costs related to closure of ash impoundments could have an adverse impact on Duke Energy Progress’ financial position, results of operations and cash flows. See Notes 4 and 9 to the Consolidated Financial Statements, “Regulatory Matters” and "Asset Retirement Obligations," respectively, for additional information.
On May 18, 2016, the NCDEQ issued proposed risk classifications for all coal ash surface impoundments in North Carolina. All ash impoundments not previously designated as high priority by the Coal Ash Act were designated as intermediate risk. Certain impoundments classified as intermediate risk, however, may be reassessed in the future as low risk pursuant to legislation signed by the former North Carolina governor on July 14, 2016. Duke Energy Progress' estimated AROs related to the closure of North Carolina ash impoundments are based upon the mandated closure method or a probability weighting of potential closure methods for the impoundments that may be reassessed to low risk. As the final risk ranking classifications in North Carolina are delineated, final closure plans and corrective action measures are developed and approved for each site, the closure work progresses, and the closure method scope and remedial action methods are determined, the complexity of work and the amount of coal combustion material could be different than originally estimated and, therefore, could materially impact Duke Energy Progress' financial position. See Note 9 to the Consolidated Financial Statements, “Asset Retirement Obligations,” for additional information.
Duke Energy Progress is a party to multiple lawsuits and subject to fines and other penalties related to operations at certain North Carolina facilities with ash basins. The outcome of these lawsuits, fines and penalties could have an adverse impact on Duke Energy Progress’ financial position, results of operations and cash flows. See Note 5 to the Consolidated Financial Statements, “Commitments and Contingencies,” for additional information.
AnIn the fourth quarter of 2016, Hurricane Matthew caused historic flooding, extensive damage and widespread power outages within the Duke Energy Progress service territory. Duke Energy Progress filed a petition with the NCUC requesting an accounting order to defer approximately $140 million of incremental operation and maintenance and capital costs incurred in response to Hurricane Matthew and other significant 2016 storms. The NCUC has not ruled on the petition. A final order from regulatory authorities disallowingthe NCUC that disallows the deferral and future recovery of all or a significant portion of the incremental storm restoration costs related to closure of ash impoundmentsincurred could haveresult in an adverse impact on Duke Energy Progress’Progress' financial position, results of operations and cash flows. See Notes 4 and 9 to the Consolidated Financial Statements, “Regulatory Matters” and "Asset Retirement Obligations," respectively, for additional information.
On October 23, 2015, the EPA published in the Federal Register the CPP rule for regulating CO2 emissions from existing fossil fuel-fired EGUs. The CPP establishes CO2 emission rates and mass cap goals that apply to fossil fuel-fired generation. Under the CPP, states are required to develop and submit a final compliance plan, or an initial plan with an extension request, to the EPA by September 6, 2016, or no later than September 6, 2018, with an approved extension. These state plans are subject to EPA approval, with a federal plan applied to states that fail to submit a plan to the EPA or if a state plan is not approved. Legal challenges to the CPP have been filed by stakeholders and motions to stay the requirements of the rule pending the outcome of the litigation have been filed. The U.S. Supreme Court granted a Motion to Stay in February 2016, effectively blocking enforcement of the rule until legal challenges are resolved. Final resolution of these legal challenges could take several years. Compliance with CPP could cause the industry to replace coal generation with natural gas and renewables, especially in states that have significant CO2 reduction targets under the rule. Costs to operate coal-fired generation plants continue to grow due to increasing environmental compliance requirements, including ash management costs unrelated to CPP, and this may result in the retirement of coal-fired generation plants earlier than the current useful lives. Duke Energy Progress continuesintends to evaluatefile a rate case in North Carolina in 2017 to recover costs of complying with CCR regulations and the needCoal Ash Act, as well as costs of capital investments in generation, transmission and distribution systems and any increase in expenditures subsequent to retire generating facilities and plans to seek regulatory recovery, where appropriate, for amounts that have not been recovered upon asset retirements. However, recovery is subject to future regulatory approval, including the recovery of carrying costs on remaining book values, and therefore cannot be assured. In addition,previous rate cases. Duke Energy ProgressProgress' earnings could incur increased fuel, purchased power, operation and maintenance, and other costs for replacement generation as a result of this rule. Duke Energy Progress cannot predictbe adversely impacted if the outcome of these matters.rate case is delayed or denied by the NCUC.

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PART II

DUKE ENERGY FLORIDA
Introduction
Management’s Discussion and Analysis should be read in conjunction with the accompanying Consolidated Financial Statements and Notes for the years ended December 31, 2016, 2015 2014 and 2013.2014.
Basis of Presentation
The results of operations and variance discussion for Duke Energy Florida is presented in a reduced disclosure format in accordance with General Instruction (I)(2)(a) of Form 10-K.
Results of Operations
Years Ended December 31,Years Ended December 31,
(in millions) 2015
 2014
 Variance
2016
 2015
 Variance
Operating Revenues $4,977
 $4,975
 $2
$4,568
 $4,977
 $(409)
Operating Expenses 3,862
 3,898
 (36)3,527
 3,862
 (335)
Gains on Sales of Other Asset and Other, net
 1
 (1)
Operating Income 1,115
 1,078
 37
1,041
 1,115
 (74)
Other Income and Expense, net 24
 20
 4
Other Income and Expenses44
 24
 20
Interest Expense 198
 201
 (3)212
 198
 14
Income Before Income Taxes 941
 897
 44
873
 941
 (68)
Income Tax Expense 342
 349
 (7)322
 342
 (20)
Net Income $599
 $548
 $51
$551
 $599
 $(48)

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PART II

The following table shows the percent changes in GWh sales and average number of customers for Duke Energy Florida. The below percentages for retail customer classes represent billed sales only. Wholesale power sales include both billed and unbilled sales. Total sales includes billed and unbilled retail sales and wholesale sales to incorporated municipalities and to public and private utilities and power marketers. Amounts are not weather normalized.
Increase (decrease) over prior year 2015
 2014
Increase (Decrease) over prior year2016
 2015
Residential sales 4.9 % 2.7 %1.7 % 4.9 %
General service sales 2.4 % 0.5 %(0.1)% 2.4 %
Industrial sales 0.8 % 1.9 %(2.9)% 0.8 %
Wholesale and other (2.3)% (5.9)%35.2 % (2.3)%
Total sales 3.5 % 1.9 %0.9 % 3.5 %
Average number of customers 1.5 % 1.5 %1.5 % 1.5 %
Year Ended December 31, 20152016 as Compared to 20142015
Operating Revenues. The variance was driven primarily by:
a $56$432 million increasedecrease in fuel and capacity revenues drivenprimarily due to lower fuel prices to retail customers, partially offset by increased usage. Fuel revenues represent salescapacity rates to retail and wholesale customers;
a $37$31 million increase due to retail sales growth;
a $34 million increase driven by favorable weather conditions. Weather was also favorable to normal in 2015; and
an $18 million increasedecrease in wholesale power revenues primarily driven by increased capacity rates on contracts.contracts that expired in the prior year; and
a $17 million decrease in retail sales, net of fuel revenue, due to unfavorable weather compared to the prior year.
Partially offset by:
a $147$38 million decreaseincrease in rider revenues primarily due to a decreasenuclear asset securitization revenues beginning in the nuclear cost recovery clause as a result of suspending Levy recovery, a decrease2016, and an increase in energy conservation cost recovery clause and environmental cost recovery clause revenues due to lowerhigher recovery rates.rates in 2016, partially offset by a decrease in NCRC revenues as a result of suspending recovery of the Levy nuclear project in 2015;
a $19 million increase in other revenues primarily due to a customer settlement charge taken in the prior year, increased transmission demand and higher transmission rates; and
a $16 million increase in weather-normal sales volumes to retail customers in the current year.
Operating Expenses. The variance was driven primarily by:
a $72$382 million decrease in fuel expense primarily due to lower deferred fuel expense and lower generation costs, partially offset by increased purchased power; and
a $20 million decrease in property and other taxes due to lower revenue related taxes compared to the prior year.

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Partially offset by:
a $35 million increase in depreciation and amortization expense primarily due to reductionsan increase in amounts recovered through the nuclear cost recoverybase assets and clause and the environmental cost recovery clause;amortization; and
a $15$33 million decreaseincrease in operations and maintenance expense primarily due to a decrease in expenses related tohigher employee benefit costs that wereand costs recoverable through the energy conservation cost recovery clause, and environmental cost recovery clause; and a decrease in employee and executive benefits; partially offset by an increase in expenses related to various information technology projects.
Partially offset by:
a $37 million increase in fuel used in electric generation and purchase power related to recovery of prior year under-collections of fuel expense and increased purchased power, partially offset by lower fuel prices;costs related to fleet maintenance work.
Other Income and Expenses. The variance was primarily driven by higher AFUDC equity return on the Citrus County Combined Cycle and Hines Chiller Uprate projects in the current year.
a $9 million increase in property and other taxesInterest Expense. The variance was due to new bonds issued in 2016, partially offset by higher property tax ratesAFUDC debt return on the Citrus County Combined Cycle and higher revenue related taxes.Hines Chiller Uprate projects in the current year.
Income Tax Expense. The variance was primarily due to lower pretax income, partially offset by a higher effective tax ratesrate. The effective tax rate for the years ended December 31, 2016 and 2015 and 2014 were 36.336.9 percent and 38.936.3 percent, respectively. The decreaseincrease in the effective tax rate was primarily due to athe release of tax reserves in 2015 due to expired statutes.tax statutes, partially offset by higher AFUDC equity.
Matters Impacting Future Results
The FPSC approved an agreement on all securitization-related issues and issued a final financing order to securitize the Crystal River Unit 3 Regulatory asset with low-cost securities. Securitization will replace base rate recovery and result in a lower rate impact to customers. Securitization of the costs of the retired Crystal River Unit 3 Nuclear Plant would result in an initial acceleration of cash, followed by a reduction to Duke Energy Florida's future results of operations and ongoing cash flows as it would no longer earn an equity return on these costs. Under a previous settlement agreement with the FPSC, the allowed return on equity for Crystal River Unit 3 is limited to 70 percent of the approved return on equity, which is currently 10.5 percent. Duke Energy Florida expects to issue the securitization bonds in the first half of 2016.

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On October 23, 2015, the EPA published in the Federal Register the CPP rule for regulating CO2 emissions from existing fossil fuel-fired EGUs. The CPP establishes CO2 emission rates and mass cap goals that apply to fossil fuel-fired generation. Under the CPP, states are required to develop and submit a final compliance plan, or an initial plan with an extension request, to the EPA by September 6, 2016, or no later than September 6, 2018, with an approved extension. These state plans are subject to EPA approval, with a federal plan applied to states that fail to submit a plan to the EPA or if a state plan is not approved. Legal challenges to the CPP have been filed by stakeholders and motions to stay the requirements of the rule pending the outcome of the litigation have been filed. The U.S. Supreme Court granted a Motion to Stay in February 2016, effectively blocking enforcement of the rule until legal challenges are resolved. Final resolution of these legal challenges could take several years. Compliance with CPP could cause the industry to replace coal generation with natural gas and renewables, especially in states that have significant CO2 reduction targets under the rule. Costs to operate coal-fired generation plants continue to grow due to increasing environmental compliance requirements, including ash management costs unrelated to CPP, and this may result in the retirement of coal-fired generation plants earlier than the current useful lives. Duke Energy Florida continues to evaluate the need to retire generating facilities and plans to seek regulatory recovery, where appropriate, for amounts that have not been recovered upon asset retirements. However, recovery is subject to future regulatory approval, including the recovery of carrying costs on remaining book values, and therefore cannot be assured. In addition, Duke Energy Florida could incur increased fuel, purchased power, operation and maintenance, and other costs for replacement generation as a result of this rule. Duke Energy Florida cannot predict the outcome of these matters.
DUKE ENERGY OHIO
 Introduction
Management’s Discussion and Analysis should be read in conjunction with the accompanying Consolidated Financial Statements and Notes for the years ended December 31, 2016, 2015 2014 and 2013.2014.
Basis of Presentation
The results of operations and variance discussion for Duke Energy Ohio is presented in a reduced disclosure format in accordance with General Instruction (I)(2)(a) of Form 10-K.
Results of Operations
Years Ended December 31,Years Ended December 31,
(in millions) 2015
2014
Variance
2016
2015
Variance
Operating Revenues $1,905
$1,913
$(8)$1,944
$1,905
$39
Operating Expenses 1,610
1,727
(117)1,599
1,610
(11)
Gains on Sales of Other Assets and Other, net 8
1
7
2
8
(6)
Operating Income 303
187
116
347
303
44
Other Income and Expense, net 6
10
(4)
Other Income and Expenses9
6
3
Interest Expense 79
86
(7)86
79
7
Income from Continuing Operations Before Income Taxes 230
111
119
270
230
40
Income Tax Expense from Continuing Operations81
43
38
78
81
(3)
Income from Continuing Operations149
68
81
192
149
43
Income (Loss) from Discontinued Operations, net of tax23
(563)586
Net Income (Loss) $172
$(495)$667
Income from Discontinued Operations, net of tax36
23
13
Net Income$228
$172
$56
The following table shows the percent changes in Regulated Utilities' GWh sales of electricity and average number of electric customers for Duke Energy Ohio. The below percentages for retail customer classes represent billed sales only. Total sales includes billed and unbilled retail sales and wholesale sales to incorporated municipalities and to public and private utilities and power marketers. Amounts are not weather normalized.
(Decrease) increase over prior year 2015
 2014
Increase (Decrease) over prior year2016
 2015
Residential sales (2.2)% 1.3 %0.7 % (2.2)%
General service sales (0.1)% 0.8 %1.3 % (0.1)%
Industrial sales 0.4 % 3.3 %(0.7)% 0.4 %
Wholesale power sales 222.3 % (24.9)%(53.9)% 222.3 %
Total sales 2.8 % 0.7 %(1.1)% 2.8 %
Average number of customers 0.7 % 0.6 %0.8 % 0.7 %
Year Ended December 31, 20152016 as Compared to 20142015
Operating Revenues. The variance was driven primarily by:
a $66$61 million increase in rider revenues primarily due to increased rates and true-ups.
Partially offset by:
a $25 million decrease in fuel revenues primarily driven by lower electric fuel and natural gas costsprices and decreased sales volume;
an $11 million decrease in electric and natural gas sales to retail customers due to unfavorable weather conditions compared to both the prior year and to normal weather; and
a $10 million decrease due to an Ohio regulatory order that reduced certain energy efficiency rider revenues (see Note 4 to the Consolidated Financial Statements, "Regulatory Matters.").

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Partially offset by:
a $29 million increase in Kentucky wholesale revenues primarily due to the purchase of the additional capacity in the East Bend Station in December 2014, the profits from which are shared with Duke Energy Kentucky retail customers;
a $19 million increase in regulated natural gas rate riders primarily due to rate increases;
a $19 million increase in Ohio other revenues related to OVEC; and
a $16 million increase in electric rate riders, excluding Ohio energy efficiency, due to rate increases and 2014 true-ups.volumes.
Operating Expenses. The variance was driven by:
a $38 million decrease in the cost of natural gas, primarily by the $94due to decreased volumes and lower natural gas prices.
Partially offset by:
a $17 million pretax impairmentincrease in operations and maintenance expense primarily due to increased spending on energy efficiency programs, higher PJM transmission owner scheduling and reactive supply expenses, and increased costs related to OVECdistribution projects and inspection maintenance programs, partially offset by lower allocated corporate costs;
a $6 million increase in 2014.depreciation and amortization expense due to additional plant in service; and
a $4 million increase in property and other taxes due to higher property taxes.
Income Tax Expense. The variance was primarily due to a lower effective tax rate, partially offset by an increase in pretax income, partially offset by a decrease in the effective tax rate.income. The effective tax ratesrate for the years ended December 31, 2016 and 2015 and 2014 were 35.228.9 percent and 38.935.2 percent, respectively. The decrease in the effective tax rate was primarily due to a favorablean immaterial out of period adjustment in 2015.related to deferred tax balances associated with property, plant and equipment.

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Income from Discontinued Operations, Net of Tax. The variance was primarily drivendue to an income tax benefit resulting from immaterial out of period deferred tax liability adjustments related to the Midwest Generation Disposal Group, partially offset by the 2014 impairment and unrealized mark-to-market losses on economic hedges for theMidwest Generation Disposal Group and favorableGroup's operating results in 2015, partially offset by a litigation reserve recorded in 2015, as discussed in2015. See Note 5, "Commitments and Contingencies,"2 to the Consolidated Financial Statements. Operating results in 2015 were favorable primarily due to higher PJM capacity revenues related to higher average cleared capacity auction pricing, increased generation marginsStatements, "Acquisitions and lower depreciation expense. Included in the variance is the impact of ceasing depreciation on the assets of the Disposal Group beginning in the second quarter of 2014. The foregone depreciationDispositions," for the year ended December 31, 2015, and December 31, 2014, was approximately $40 million and $121 million, respectively.additional information.
Matters Impacting Future Results
In 2013, a FERC ALJ issued an initial decision that Duke Energy Ohio is responsible for costs associated with certain MVP costs, a type of MTEP cost, approved by MISO prior to the date of Duke Energy Ohio’s withdrawal. On October 29, 2015, the FERC issued an order reversing the ALJ's decision. FERC ruled that Duke Energy Ohio has no liability for MVP costs after its withdrawal from MISO. On November 30, 2015, MISO filed with the FERC a request for rehearing. If Duke Energy Ohio is deemed responsible for these costs upon appeal, and if the regulatory commissions disallow recovery of these costs, there would be an adverse impact to Duke Energy Ohio's financial position, results of operations and cash flows. See Note 4 to the Consolidated Financial Statements, “Regulatory Matters,” for additional information.
An order from regulatory authorities disallowing recovery of costs related to closure of ash basins could have an adverse impact on Duke Energy Ohio's financial position, results of operations and cash flows. See Notes 4 and 9 to the Consolidated Financial Statements, “Regulatory Matters” and "Asset Retirement Obligations," respectively, for additional information.
Duke Energy Ohio’s nonregulated Beckjord station, a facility retired during 2014, is not subject to the recently enacted EPA rule related to the disposal of CCR from electric utilities. However, if costs are incurred as a result of environmental regulations or to mitigate risk associated with on-site storage of coal ash at the facility, the costs could have an adverse impact on Duke Energy Ohio's financial position, results of operations and cash flows.
On October 23, 2015,In 2013, the EPA published in the Federal Register the CPP rulePUCO issued an order (PUCO order) approving Duke Energy Ohio’s recovery of costs incurred between 2008 and 2012 for regulating CO2 emissions from existing fossil fuel-fired EGUs. The CPP establishes CO2 emission ratesenvironmental investigation and mass cap goals that apply to fossil fuel-fired generation. Under the CPP, states are required to develop and submit a final compliance plan, or an initial plan with an extension request, to the EPA by September 6,remediation of two former MGP sites. At December 31, 2016, or no later than September 6, 2018, with an approved extension. These state plans are subject to EPA approval, with a federal plan applied to states that fail to submit a plan to the EPA or if a state plan is not approved. Legal challenges to the CPP have been filed by stakeholders and motions to stay the requirements of the rule pending the outcome of the litigation have been filed. The U.S. Supreme Court granted a Motion to Stay in February 2016, effectively blocking enforcement of the rule until legal challenges are resolved. Final resolution of these legal challenges could take several years. Compliance with CPP could cause the industry to replace coal generation with natural gas and renewables, especially in states that have significant CO2 reduction targets under the rule. Costs to operate coal-fired generation plants continue to grow due to increasing environmental compliance requirements, including ash management costs unrelated to CPP, and this may result in the retirement of coal-fired generation plants earlier than the current useful lives. Duke Energy Ohio continueshad recorded in Regulatory assets on the Consolidated Balance Sheet approximately $99 million of estimated MGP remediation costs not yet recovered through the MGP rider mechanism. Intervenors have appealed to evaluate the need to retire generating facilities and plans to seek regulatory recovery, where appropriate, for amounts that have not been recovered upon asset retirements. However, recovery is subject to future regulatory approval, includingOhio Supreme Court the PUCO order authorizing recovery of carrying costs on remaining book values, and therefore cannot be assured. In addition, Duke Energy Ohio could incur increased fuel, purchased power, operation and maintenance, and other costs for replacement generation as a result of this rule.these amounts. That appeal remains pending. Duke Energy Ohio cannot predict the outcome of the appeal before the Ohio Supreme Court or future action by the PUCO. If Duke Energy Ohio is not able to recover these matters.remediation costs in rates, the costs could have an adverse impact on Duke Energy Ohio's financial position, results of operations and cash flows. See Note 4 to the Consolidated Financial Statements, "Regulatory Matters," for additional information.
Duke Energy Ohio has a 9 percent ownership interest in OVEC, which owns 2,256 MW of coal fired generation capacity. As a counterparty to an ICPA, Duke Energy Ohio has a contractual arrangement to receive entitlements to capacity and energy from OVEC’s power plants through June 2040 commensurate with its power participation ratio, which is equivalent to Duke Energy Ohio’s ownership interest. Costs, including fuel, operating expenses, fixed costs, debt amortization, and interest expense, are allocated to counterparties to the ICPA, including Duke Energy Ohio, based on their power participation ratio. The value of the ICPA is subject to variability due to fluctuations in power prices and changes in OVEC’s costs of business. Deterioration in the credit quality or bankruptcy of one or more parties to the ICPA could increase the costs of OVEC. In addition, certain proposed environmental rulemaking costs could result in future increased cost allocations.
Duke Energy Ohio has notified the PUCO of its intent to file an electric distribution rate case in Ohio to address recovery of electric distribution system capital investments and any increase in expenditures subsequent to previous rate cases. Duke Energy Ohio's earnings could be adversely impacted if the rate case is delayed or denied by the PUCO.

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DUKE ENERGY INDIANA
 Introduction
Management’s Discussion and Analysis should be read in conjunction with the accompanying Consolidated Financial Statements and Notes for the years ended December 31, 2016, 2015 2014 and 2013.2014.
Basis of Presentation
The results of operations and variance discussion for Duke Energy Indiana is presented in a reduced disclosure format in accordance with General Instruction (I)(2)(a) of Form 10-K.

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Results of Operations
Years Ended December 31,Years Ended December 31,
(in millions) 2015
2014
Variance
2016
2015
Variance
Operating Revenues $2,890
$3,175
$(285)$2,958
$2,890
$68
Operating Expenses 2,247
2,470
(223)2,194
2,247
(53)
Gains on Sales of Other Assets and Other, net 1

1
1
1

Operating Income644
705
(61)765
644
121
Other Income and Expense, net 11
22
(11)
Other Income and Expenses22
11
11
Interest Expense 176
171
5
181
176
5
Income Before Income Taxes 479
556
(77)606
479
127
Income Tax Expense 163
197
(34)225
163
62
Net Income $316
$359
$(43)$381
$316
$65
The following table shows the percent changes in GWh sales and average number of customers for Duke Energy Indiana. The below percentages for retail customer classes represent billed sales only. Total sales includes billed and unbilled retail sales and wholesale sales to incorporated municipalities and to public and private utilities and power marketers. Amounts are not weather normalized.
(Decrease) increase over prior year 2015
 2014
Increase (Decrease) over prior year2016
 2015
Residential sales (4.1)% 2.1 %(0.4)% (4.1)%
General service sales (0.5)%  %0.7 % (0.5)%
Industrial sales (1.4)% 2.5 %0.4 % (1.4)%
Wholesale power sales 9.4 % (8.8)%10.8 % 9.4 %
Total sales 0.3 % (0.8)%2.5 % 0.3 %
Average number of customers 0.8 % 0.6 %1.1 % 0.8 %
Year Ended December 31, 20152016 as Compared to 20142015
Operating Revenues. The variance was driven primarily by:
a $265$94 million increase in rider revenues related to clean coal equipment and Edwardsport IGCC; and
a $20 million increase in wholesale power revenues due to new contracts and higher demand.
Partially offset by:
a $50 million decrease in fuel revenues primarily due to a decrease in fuel rates as a result of lower fuel and purchased power costs.prices.
Operating Expenses. The variance was driven primarily by:
a $277$73 million decrease in fuel used in electric generation and purchased powerexpense primarily due to lower fuel prices;prices and
a $67 million decrease in property lower purchased power costs; and other taxes, primarily as a result of lower sales and use tax. In 2014, an approximate $40 million other tax reserve was recorded, a portion of which was reversed in 2015 upon settlement of the matter.
Partially offset by:
an $88 million pretax impairment charge in the prior year related to the 2015 Edwardsport IGCC settlements. See Note 4
Partially offset by:
a $62 million increase in depreciation and amortization expense primarily due to additional plant in service, as well as increased depreciation related to AROs;
a $40 million increase in operations and maintenance expense due to 2016 costs at Edwardsport IGCC in excess of the settlement cap and increased costs related to energy efficiency programs and clean coal technology that are recoverable through rate riders, partially offset by decreased expenses at several generating plants; and
an $8 million impairment charge in the current year related to the Consolidated Financial Statements, “Regulatory Matters,” for additional information.early retirement of certain metering equipment.
Other Income and Expense, net.Expense. The variance was driven primarily due to lowerby an increase in AFUDC equity due to Cayuga scrubbers placed into service in Julythe current year and certain costs resulting from the 2015 and a lower rate compared toEdwardsport IGCC settlements in the prior year, partially offset by favorable interest income.year.

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Income Tax Expense. The variance was primarily due to a decreasean increase in pretax income and in the effective tax rate.income. The effective tax rates for the years ended December 31, 2016 and 2015 and 2014 were 34.037.1 percent and 35.534.0 percent, respectively. The decreaseincrease in the effective tax rate was primarily due to a favorablean immaterial out of period adjustment to deferred tax balances in 2015.2015 associated with property, plant and equipment and the reclassification of state tax credits from income tax to general franchise tax in 2016.
Matters Impacting Future Results
Duke Energy Indiana is evaluating converting Wabash River Unit 6 to a natural gas-fired unit or retiring the unit earlier than its current estimated useful life. If Duke Energy Indiana elects early retirement of the unit, recovery of remaining book values and associated carrying costs totaling approximately $40 million could be subject to future regulatory approvals and therefore cannot be assured.
On April 17, 2015, the EPA published in the Federal Register a rule to regulate the disposal of CCR from electric utilities as solid waste. Duke Energy Indiana has interpreted the rule to identify the coal ash basin sites impacted and has assessed the amounts of coal ash subject to the rule and a method of compliance. Duke Energy Indiana's interpretation of the requirements of the CCR rule is subject to potential legal challenges and further regulatory approvals, which could result in additional ash basin closure requirements, higher costs of compliance and greater asset retirement obligations.AROs. An order from regulatory authorities disallowing recovery of costs related to closure of ash basins could have an adverse impact on Duke Energy Indiana's financial position, results of operations and cash flows.

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In September 2015,The IURC approved a settlement agreement between Duke Energy Indiana entered into a settlement agreement withand multiple parties that will resolveresolves all disputes, claims and issues from the IURC proceedings regarding the Edwardsport IGCC generating facility. In January 2016, additional parties joined a revised settlement. Pursuant to the terms of the agreement, Duke Energy Indiana recognized an impairment and related charges of $93 million. Additionally, the settlement agreement stipulates the recovery of the remaining regulatory asset over an eight-year period and confirms the conclusion that the in-service date for accounting and ratemaking purposes will remain June 7, 2013. The settlement agreement will also impose a cost cap for recoverable operations and maintenance retail costs of $73 million in 2016 and $77 million in 2017 as well as a cost cap for ongoing capital expenditures through 2017. As part of the settlement, Duke Energy Indiana committed to cease burning coal at Gallagher Station Unit 2 and 4 by the end of 2022. The settlement is subject to IURC approval and, if approved, would resolve and close a number of outstanding issues pending before the IURC related to post commercialpost-commercial operating performance and recovery of ongoing operating and capital costs at Edwardsport. If the settlement is not approved, outstanding issues beforeEdwardsport IGCC generating facility. Pursuant to the IURC related to Edwardsport would resume,terms of this agreement, the ultimate resolution of which could have an adverse impact on Duke Energy Indiana's financial position, results ofagreement imposes a cost cap for retail recoverable operations and cash flows. In addition, themaintenance costs through 2017. An inability to manage operating and capital costs underin accordance with caps imposed underpursuant to the settlementagreement could have an adverse impact on Duke Energy Indiana's financial position, results of operations and cash flows. See Note 4 to the Consolidated Financial Statements, “Regulatory Matters,” for additional information.
On October 23, 2015, the EPA published in the Federal Register the CPP rule for regulating CO2 emissions from existing fossil fuel-fired EGUs. The CPP establishes CO2 emission rates and mass cap goals that apply to fossil fuel-fired generation. Under the CPP, states are required to develop and submit a final compliance plan, or an initial plan with an extension request, to the EPA by September 6, 2016, or no later than September 6, 2018, with an approved extension. These state plans are subject to EPA approval, with a federal plan applied to states that fail to submit a plan to the EPA or if a state plan is not approved. Legal challenges to the CPP have been filed by stakeholders and motions to stay the requirements of the rule pending the outcome of the litigation have been filed. The U.S. Supreme Court granted a Motion to Stay in February 2016, effectively blocking enforcement of the rule until legal challenges are resolved. Final resolution of these legal challenges could take several years. Compliance with CPP could cause the industry to replace coal generation with natural gas and renewables, especially in states that have significant CO2 reduction targets under the rule. Costs to operate coal-fired generation plants continue to grow due to increasing environmental compliance requirements, including ash management costs unrelated to CPP, and this may result in the retirement of coal-fired generation plants earlier than the current useful lives. Duke Energy Indiana continues to evaluate the need to retire generating facilities and plans to seek regulatory recovery, where appropriate, for amounts that have not been recovered upon asset retirements. However, recovery is subject to future regulatory approval, including the recovery of carrying costs on remaining book values, and therefore cannot be assured. In addition, Duke Energy Indiana could incur increased fuel, purchased power, operation and maintenance, and other costs for replacement generation as a result of this rule. Duke Energy Indiana cannot predict the outcome of these matters.
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CRITICAL ACCOUNTING POLICIES AND ESTIMATES
Preparation of financial statements requires the application of accounting policies, judgments, assumptions and estimates that can significantly affect the reported results of operations, andcash flows or the amounts of assets and liabilities reportedrecognized in the financial statements. Judgments made include the likelihood of success of particular projects, possible legal and regulatory challenges, earnings assumptions on pension and other benefit fund investments and anticipated recovery of costs, especially through regulated operations. 
Management discusses these policies, estimates and assumptions with senior members of management on a regular basis and provides periodic updates on management decisions to the Audit Committee of the Board of Directors. Management believes the areas described below require significant judgment in the application of accounting policy or in making estimates and assumptions that are inherently uncertain and that may change in subsequent periods.
For further information, see Note 1 to the Consolidated Financial Statements, "Summary of Significant Accounting Policies."
RegulatoryRegulated Operations Accounting
Regulated Utilities, Duke Energy’s regulated operations meetsmeet the criteria for application of regulatoryregulated operations accounting treatment for substantially all of its operations. As a result, Duke Energy records assets and liabilities that would not be recorded for nonregulated entities. Regulatory assets generally represent incurred costs that have been deferred because such costs are probable of future recovery in customer rates. Regulatory liabilities generally represent obligations to make refunds or reduce rates to customers for previous collections or deferred revenue for costs that have yet to be incurred. Regulatory assets and liabilities can also be recorded for Alternative Revenue Programs (ARP), such as rate stabilization adjustment mechanisms and weather normalization adjustments. These programs allow for the deferral or accrual of revenues to provide recovery of approved margins on an annual basis independent of weather and consumption patterns. Duke Energy also has ARP's that relate to energy efficiency programs.
Management continually assesses whether recorded regulatory assets are probable of future recovery by considering factors such as applicable regulatory environment changes, historical regulatory treatment for similar costs in Duke Energy’s jurisdictions, litigation of rate orders, recent rate orders to other regulated entities, levels of actual return on equity compared to approved rates of return on equity and the status of any pending or potential deregulation legislation. If future recovery of costs ceases to be probable, asset write-offs would be recognized in operating income. Additionally, regulatory agencies can provide flexibility in the manner and timing of the depreciation of property, plant and equipment, recognition of asset retirement costs and amortization of regulatory assets, or may disallow recovery of all or a portion of certain assets. For further information on regulatory assets and liabilities, see Note 4 to the Consolidated Financial Statements, “Regulatory Matters.”
As required by regulated operations accounting rules, significant judgment can be required to determine if an otherwise recognizable incurred cost, such as closure costs for ash impoundments, qualifies to be deferred for future recovery as a regulatory asset. Significant judgment can also be required to determine if revenues previously recognized are for entity specific costs that are no longer expected to be or have not yet been incurred and are therefore a regulatory liability. See Note 4 to the Consolidated Financial Statements, "Regulatory Matters," for a more in-depth discussion of Regulatory Assets and Liabilities.

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RegulatoryRegulated operations accounting rules also require recognition of a disallowance (also called "impairment") loss if it becomes probable that part of the cost of a plant under construction (or a recently completed plant or an abandoned plant) will be disallowed for ratemaking purposes and a reasonable estimate of the amount of the disallowance can be made. For example, if a cost cap is set for a plant still under construction, the amount of the disallowance is a result of a judgment as to the ultimate cost of the plant. Other disallowances can require judgments on allowed future rate recovery. See Note 4 to the Consolidated Financial Statements, “Regulatory Matters,” for a discussion of disallowances recorded related to the Edwardsport IGCC Plant, and the retired Crystal River Unit 3 Nuclear Plant.Plant (Crystal River Unit 3) and the Grid Infrastructure Improvement Plan.
When it becomes probable that regulated generation, transmission or distribution assets will be abandoned, the cost of the asset is removed from plant in service. The value that may be retained as a regulatory asset on the balance sheet for the abandoned property is dependent upon amounts that may be recovered through regulated rates, including any return. As such, an impairment charge, if any, could be partially or fully offset by the establishment of a regulatory asset if rate recovery is probable. The impairment for a disallowance of costs for regulated plants under construction, recently completed or abandoned is based on discounted cash flows.
For further information, see Note 4 to the Consolidated Financial Statements, "Regulatory Matters."
Goodwill Impairment Assessments
Duke Energy allocates goodwill to reporting units, which are either the Business Segments listed in Note 3 to the Consolidated Financial Statements or one level below based on how the Business Segment is managed. Duke Energy is required to test goodwill for impairment at least annually and more frequently if it is more likely than not that the fair value is less than the carrying value. Duke Energy performs its annual impairment test as of August 31.
Application of the goodwill impairment test requires managementmanagement's judgment, including determining the fair value of the reporting unit, which management estimates using a weighted combination of the income approach, which estimates fair value based on discounted cash flows, and the market approach, which estimates fair value based on market comparables within the utility and energy industries. Significant assumptions used in these fair value analyses include discount and growth rates, future rates of return expected to result from ongoing rate regulation, utility sector market performance and transactions, projected operating and capital cash flows for Duke Energy’s business and the fair value of debt.

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Estimated future cash flows under the income approach are based to a large extent on Duke Energy’s internal business plan, and adjusted as appropriate for Duke Energy’s views of market participant assumptions. Duke Energy’s internal business plan reflects management’s assumptions related to customer usage and attrition based on internal data and economic data obtained from third-party sources, projected commodity pricing data and potential changes in environmental regulations. The business plan assumes the occurrence of certain events in the future, such as the outcome of future rate filings, future approved rates of returns on equity, anticipated earnings/returns related to significant future capital investments, continued recovery of cost of service, the renewal of certain contracts and the future of renewable tax credits. Management also makes assumptions regarding operation, maintenance and general and administrative costs based on the expected outcome of the aforementioned events. In estimating cash flows, Duke Energy incorporates expected growth rates, regulatory and economic stability, the ability to renew contracts and other factors, into its revenue and expense forecasts.
One of the most significant assumptions that Duke Energy utilizes in determining the fair value of its reporting units under the income approach is the discount rate applied to the estimated future cash flows. Management determines the appropriate discount rate for each of its reporting units based on the weighted average cost of capital (WACC) for each individual reporting unit. The WACC takes into account both the after-tax cost of debt and cost of equity. A major component of the cost of equity is the current risk-free rate on 20-year U.S. Treasury bonds. In the 20152016 impairment tests, Duke Energy considered implied WACCs for certain peer companies in determining the appropriate WACC rates to use in its analysis. As each reporting unit has a different risk profile based on the nature of its operations, including factors such as regulation, the WACC for each reporting unit may differ. Accordingly, the WACCs were adjusted, as appropriate, to account for company specific risk premiums. The discount rates used for calculating the fair values as of August 31, 2015,2016, for each of Duke Energy’s domestic reporting units ranged from 5.95.2 percent to 7.115 percent. The underlying assumptions and estimates are made as of a point in time. Subsequent changes, particularly changes in the discount rates, authorized regulated rates of return or growth rates inherent in management’s estimates of future cash flows, could result in future impairment charges.
For Duke Energy’s international operations, a country-specific risk adder based on the average risk premium for each separate country in which International Energy operates was added to the base discount rate to reflect the differing risk profiles. This resulted in a discount rate for the August 31, 2015,2016, goodwill impairment test for the international operations of 10.511.5 percent. In December 2016, Duke Energy disposed of its International operations and no longer has goodwill associated with the International operations. For further information, see Note 2 to the Consolidated Financial Statements, “Acquisitions and Dispositions.”
The underlying assumptions and estimates are made as of a point in time. Subsequent changes, particularly changes in the discount rates, authorized regulated rates of return or growth rates inherent in management’s estimates of future cash flows, could result in future impairment charges.
The majority of Duke Energy’s business isEnergy primarily operates in environments that are either fully or partially rate-regulated. In such environments, revenue requirements are adjusted periodically by regulators based on factors including levels of costs, sales volumes and costs of capital. Accordingly, Duke Energy’s regulated utilities operate to some degree with a buffer from the direct effects, positive or negative, of significant swings in market or economic conditions. However, significant changes in discount rates over a prolonged period may have a material impact on the fair value of equity.
As of August 31, 2015,2016, all of the reporting units’ estimated fair value of equity substantially exceeded the carrying value of equity.
For further information, see Note 11 to the Consolidated Financial Statements, "Goodwill and Intangible Assets."
Asset Retirement Obligations
AROs are recognized for legal obligations associated with the retirement of property, plant and equipment. Substantially all AROs are related to regulated operations. When recording an ARO, the present value of the projected liability is recognized in the period in which it is incurred, if a reasonable estimate of fair value can be made. The liability is accreted over time. For operating plants, the present value of the liability is added to the cost of the associated asset and depreciated over the remaining life of the asset. For retired plants, the present value of the liability is recorded as a regulatory asset unless determined not to be recoverable.
The present value of the initial obligation and subsequent updates are based on discounted cash flows, which include estimates regarding timing of future cash flows, selection of discount rates and cost escalation rates, among other factors. These estimates are subject to change. Depreciation expense is adjusted prospectively for any changes to the carrying amount of the associated asset. The Duke Energy Registrants receive amounts to fund the cost of the ARO for regulated operations through a combination of regulated revenues and earnings on the nuclear decommissioning trust fund (NDTF). As a result, amounts recovered in regulated revenues, earnings on the NDTF, accretion expense and depreciation of the associated asset are netted and deferred as a regulatory asset or liability.
Obligations for nuclear decommissioning are based on-site-specific cost studies. Duke Energy Carolinas and Duke Energy Progress assume prompt dismantlement of the nuclear facilities after operations are ceased. Duke Energy Florida assumes Crystal River Unit 3 will be placed into a safe storage configuration until eventual dismantlement is completed by 2074. Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida also assume that spent fuel will be stored on-site until such time that it can be transferred to a yet to be built U.S. Department of Energy (DOE) facility.
Obligations for closure of ash basins are based upon discounted cash flows of estimated costs for site-specific plans, if known, or probability weightings of the potential closure methods if the closure plans are under development and multiple closure options are being considered and evaluated on a site-by-site basis.
For further information, see Note 9 to the Consolidated Financial Statements, "Asset Retirement Obligations."
Long-Lived Asset Impairment Assessments, Excluding Regulated Operations
Property, plant and equipment, excluding plant held for sale, is stated at the lower of carrying value (historical cost less accumulated depreciation and previously recorded impairments) or fair value, if impaired. Duke Energy evaluates property, plant and equipment for impairment when events or changes in circumstances (such as a significant change in cash flow projections or the determination that it is more likely than not that an asset or asset group will be sold) indicate the carrying value of such assets may not be recoverable. The determination of whether an impairment has occurred is based on an estimate of undiscounted future cash flows attributable to the assets, as compared with their carrying value.

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Performing an impairment evaluation involves a significant degree of estimation and judgment in areas such as identifying circumstances that indicate an impairment may exist, identifying and grouping affected assets and developing the undiscounted future cash flows. If an impairment has occurred, the amount of the impairment recognized is determined by estimating the fair value and recording a loss if the carrying value is greater than the fair value. Additionally, determining fair value requires probability weighting future cash flows to reflect expectations about possible variations in their amounts or timing and the selection of an appropriate discount rate. Although cash flow estimates are based on relevant information available at the time the estimates are made, estimates of future cash flows are, by nature, highly uncertain and may vary significantly from actual results. For assets identified as held for sale, the carrying value is compared to the estimated fair value less cost to sell to determine if an impairment loss is required. Until the assets are disposed of, their estimated fair value is re-evaluated when circumstances or events change.
When determining whether an asset or asset group has been impaired, management groups assets at the lowest level that has discrete cash flows.
For further information, see Note 2 to the Consolidated Financial Statements, "Acquisition and Dispositions."
Accounting for Loss Contingencies
Preparation of financial statements and related disclosures require judgments regarding the future outcome of contingent events. Duke Energy is involved in certain legal and environmental matters arising in the normal course of business. Estimating probable losses requires analysis of multiple forecasts and scenarios that often depend on judgments about potential actions by third parties, such as federal, state and local courts and regulators. Contingent liabilities are often resolved over long periods of time. Amounts recorded in the consolidated financial statements may differ from the actual outcome once the contingency is resolved, which could have a material impact on future results of operations, financial position and cash flows of Duke Energy.
For further information, see Notes 4 and 5 to the Consolidated Financial Statements, "Regulatory Matters" and “Commitments and Contingencies.”
Revenue Recognition
Revenues on sales of electricity and gas are recognized when either the electric service is provided or the productnatural gas is delivered. As retail meters are read, invoices are prepared and the invoice amount is generally recognized as "billed" revenue. Operating revenues also include unbilled"unbilled" electric and natural gas revenues earned whenfor the amount of service has beenprovided or product delivered but not billed byafter the last meter reading prior to the end of the accounting period. Unbilled retail revenues are estimated by applying an average revenue per kilowatt-hour (kWh) or, per thousand cubic feet (Mcf) or per dekatherm (dth) for all customer classes to the number of estimated kWh, Mcf or Mcf delivered but not billed. Unbilled wholesale energy revenues are calculated by applying the contractual rate per MWh to the number of estimated MWhdth delivered but not yet billed. Unbilled
For wholesale demand revenuescustomers, the invoice amount is generally recognized as “billed” revenue. Although meters are calculated by applyingread as of the contractual rate per MWend of the month, invoices have typically not been prepared. An estimate of the wholesale invoice is included in the reported amount of “unbilled” revenue. In addition, adjustments to accounts receivable or accruals of accounts payable are sometimes recorded to contracts billed under estimated formula rates which are subsequently trued-up in the MW volume delivered but not yet billed. following year.
The amount of unbilled revenues can vary significantly from period to period as a result of numerous factors that impact the change in the unbilled revenue receivable balance, including seasonality, weather, customer usage patterns, customer mix, timing of rendering customer bills, meter readings schedules and the average price in effect for customer classes.
Pension and Other Post-Retirement Benefits
The calculation of pension expense, other post-retirement benefit expense and net pension and other post-retirement assets or liabilities require the use of assumptions and election of permissible accounting alternatives. Changes in assumptions can result in different expense and reported asset or liability amounts and future actual experience can differ from the assumptions. Duke Energy believes the most critical assumptions for pension and other post-retirement benefits are the expected long-term rate of return on plan assets and the assumed discount rate applied to future projected benefit payments. Additionally, the health care cost trend rate assumption is critical to Duke Energy’s estimate of other post-retirement benefits.
Duke Energy elects to amortize net actuarial gains or losses in excess of the corridor of 10 percent of the greater of the market-related value of plan assets or plan projected benefit obligation, into net pension or other post-retirement benefit expense over the average remaining service period of active covered employees. Prior service cost or credit, which represents the effect on plan liabilities due to plan amendments, is amortized over the average remaining service period of active covered employees.
Duke Energy, maintainsor its affiliates, maintain, and the Subsidiary Registrants participate in, qualified, non-contributory defined benefit retirement plans. The plans cover most U.S. employees using a cash balance formula. Under a cash balance formula, a plan participant accumulates a retirement benefit consisting of pay credits based upon a percentage of current eligible earnings based on age and years of service and current interest credits. Certain employees are covered under plans that use a final average earnings formula. As of January 1, 2014, the qualified and non-qualified non-contributory defined benefit plans are closed to new and rehired non-union, and certain unionized employees. Piedmont employees hired or rehired after December 31, 2007, cannot participate in the qualified, non-contributory defined benefit plans, but are participants in a Money Purchase Pension plan. Duke Energy, or its affiliates, maintain, and the Subsidiary Registrants participate in, non-qualified, non-contributory defined benefit retirement plans which cover certain executives.
Duke Energy provides some health care and life insurance benefits for retired employees on a contributory and non-contributory basis. Certain employees are eligible for these benefits if they have met age and service requirements at retirement, as defined in the plans. These plans are closed to new participants.
As of December 31, 2015,2016, Duke Energy assumes pension and other post-retirement plan assets will generate a long-term rate of return of 6.50 percent.percent (6.75 percent for Piedmont pension and other post-retirement plan assets). The expected long-term rate of return was developed using a weighted average calculation of expected returns based primarily on future expected returns across asset classes considering the use of active asset managers, where applicable. Equity securities are held for their higher expected returns. Debt securities are primarily held to hedge the pension liability. Hedge funds, real estate and other global securities are held for diversification. Investments within asset classes are diversified to achieve broad market participation and reduce the impact of individual managers on investments. In 2013, Duke Energy adopted a de-risking investment strategy for its pension assets. As the funded status of the plans increase, over time the targeted allocation to return seekingreturn-seeking assets will be reduced and the targeted allocation to fixed-income assets will be increased to better manage Duke Energy's pension liabilityassets and reducedreduce funded status volatility. Effective January 1, 2016, basedBased on the current funded status of the plans, the asset allocation for the Duke Energy pension plans has been adjusted tois 63 percent fixed-income assets and 37 percent return-seeking assets. The asset allocation for the Piedmont assets is 61 percent return-seeking assets and 39 percent liability hedging fixed-income assets. Duke Energy regularly reviews its actual asset allocation and periodically rebalances its investments to the targeted allocations when considered appropriate.

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The assets for Duke Energy’s pension and other post-retirement plans are maintained in a master retirement trust. Piedmont also has qualified pension and other post-retirement assets. Duke Energy also invests other post-retirement assets in Voluntary Employees' Beneficiary Association trusts and mutual funds within a Piedmont 401(h) account (excludes 401(h) accounts within the Duke Energy Corporation Employee Benefits Trust (VEBA I)master retirement trust). The investment objective of VEBA I is to achieve sufficient returns, subject to a prudent level of portfolio risk, for the purpose of promoting the security of plan benefits for participants. VEBA I is passively managed.
Duke Energy discounted its future U.S. pension and other post-retirement obligations using a rate of 4.44.1 percent as of December 31, 2015.2016. Discount rates used to measure benefit plan obligations for financial reporting purposes reflect rates at which pension benefits could be effectively settled. As of December 31, 2015,2016, Duke Energy determined its discount rate for U.S. pension and other post-retirement obligations using a bond selection-settlement portfolio approach. This approach develops a discount rate by selecting a portfolio of high quality corporate bonds that generate sufficient cash flow to match the timing ofprovide for projected benefit payments.payments of the plan. The selected bond portfolio is derived from a universe of non-callable corporate bonds rated Aa quality or higher. After the bond portfolio is selected, a single interest rate is determined that equates the present value of the plan’s projected benefit payments discounted at this rate with the market value of the bonds selected.
Future changes in plan asset returns, assumed discount rates and various other factors related to the participants in Duke Energy’s pension and post-retirement plans will impact future pension expense and liabilities. Duke Energy cannot predict with certainty what these factors will be in the future. The following table presents the approximate effect on Duke Energy’s 20152016 pretax pension expense, pretax other post-retirement expense, pension obligation and other post-retirement benefit obligation if a 0.25 percent change in rates were to occur.
Qualified and Non- Other Post-RetirementQualified and Non- Other Post-Retirement
Qualified Pension Plans PlansQualified Pension Plans Plans
(in millions)0.25% (0.25)% 0.25% (0.25)%0.25% (0.25)% 0.25% (0.25)%
Effect on 2015 pretax pension and other post-retirement expense           
Effect on 2016 pretax pension and other post-retirement expense       
Expected long-term rate of return$(20) $20
 $(1) $1
$(20) $20
 $(1) $1
Discount rate(14) 13
 (1) 1
(17) 17
 (1) 1
Effect on pension and other post-retirement benefit obligation at December 31, 2015  
   
   
   
Effect on pension and other post-retirement benefit obligation at December 31, 2016 
  
  
  
Discount rate(200) 206
 (17) 17
(202) 207
 (17) 17
Duke Energy’s U.S. other post-retirement plan uses a health care trend rate covering both pre- and post-age 65 retired plan participants, which is comprised of a medical care trend rate, which reflects the near- and long-term expectation of increases in medical costs, and a prescription drug trend rate, which reflects the nearnear- and long-term expectation of increases in prescription drug costs. As of December 31, 2015,2016, the health care trend rate was 7.57 percent, trending down to 4.75 percent by 2023. The following table presents the approximate effect on Duke Energy’s 20152016 pretax other post-retirement expense and other post-retirement benefit obligation if a 1 percentage point change in the health care trend rate were to occur. These plans are closed to new hires.
 Other Post-Retirement
  Plans
(in millions)1% (1)%
Effect on 2015 other post-retirement expense$7
 $(6)
Effect on other post-retirement benefit obligation at December 31, 201529
 (26)
 Other Post-Retirement
 Plans
(in millions)1% (1)%
Effect on 2016 other post-retirement expense$5
 $(5)
Effect on other post-retirement benefit obligation at December 31, 201629
 (25)
For further information, see Note 21 to the Consolidated Financial Statements, “Employee Benefit Plans.”
Income Taxes
Duke Energy and its subsidiaries file a consolidated federal income tax return and other state returns. The Subsidiary Registrants entered into a tax-sharing agreement with Duke Energy. Income taxes recorded represent amounts the Subsidiary Registrants would incur as separate C-Corporations. Deferred income taxes have been provided for temporary differences between GAAP and tax bases of assets and liabilities because the differences create taxable or tax-deductible amounts for future periods. ITCs associated with regulated operations are deferred and amortized as a reduction of income tax expense over the estimated useful lives of the related properties.
Positions taken or expected to be taken on tax returns, including the decision to exclude certain income or transactions from a return, are recognized in the financial statements when it is more likely than not the tax position can be sustained based solely on the technical merits of the position. The largest amount of tax benefit that is greater than 50 percent likely of being effectively settled is recorded. Management considers a tax position effectively settled when: (i) the taxing authority has completed its examination procedures, including all appeals and administrative reviews; (ii) the Duke Energy Registrants do not intend to appeal or litigate the tax position included in the completed examination; and (iii) it is remote the taxing authority would examine or re-examine the tax position. The amount of a tax return position that is not recognized in the financial statements is disclosed as an unrecognized tax benefit. If these unrecognized tax benefits are later recognized, then there will be a decrease in income tax expense or a reclassification between deferred and current taxes payable. If the portion of tax benefits that has been recognized changes and those tax benefits are subsequently unrecognized, then the previously recognized tax benefits may impact the financial statements through increasing income tax expense or a reclassification between deferred and current taxes payable. Changes in assumptions on tax benefits may also impact interest expense or interest income and may result in the recognition of tax penalties.
Tax-related interest and penalties are recorded in Interest Expense and Other Income and Expenses, net, in the Consolidated Statements of Operations.


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LIQUIDITY AND CAPITAL RESOURCES
Sources and Uses of Cash
Duke Energy relies primarily upon cash flows from operations, debt issuances and its existing cash and cash equivalents to fund its domestic liquidity and capital requirements. Duke Energy’s capital requirements arise primarily from capital and investment expenditures, repaying long-term debt and paying dividends to shareholders. Duke Energy’s projected primary sources and uses for the next three fiscal years are included in the table below.
(in millions) 2016
 2017
 2018
2017
 2018
 2019
Uses(a):
  
   
   
Uses:
 
  
  
Capital expenditures $8,600-$8,775
 $7,300-$8,500
 $6,775-$7,800
$8,780
 $10,030
 $10,075
Debt maturities and reduction in short-term debt(b)(a)
3,885
 2,250
 2,750
2,700
 2,950
 2,750
Dividend payments (b)2,300
 2,400
 2,500
2,450
 2,550
 2,650
Sources(a):
  
    
Cash flows from operations(c)
$7,200
 $7,500
 $7,900
Sources:
     
Net cash flows from operations(c)
$6,750
 $7,950
 $8,750
Debt issuances7,050
 5,200
 4,150
6,500
 6,650
 5,400
Equity issuances
 
 350

 350
 350
(a)Uses and Sources exclude amounts related to payments for or proceeds from the planned acquisition of Piedmont and possible sale of the International Energy segment.
(b)Excludes capital leases and 2018 maturities of securitized receivables maturities in 2016 and 2017 expected to be renewed. Amounts represent Duke Energy's financing plan, which accelerates certain contractual maturities.

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(b)Subject to approval by the Board of Directors.
(c)Includes expenditures related to ash basin closures.
On October 24, 2015, Duke Energy entered into an Agreement and Plan of Merger (Merger Agreement) with Piedmont Natural Gas Company, Inc., (Piedmont) a North Carolina corporation. Under the terms of the Merger Agreement, Duke Energy will acquire Piedmont for $4.9 billion in cash and will assume Piedmont's existing debt, which was approximately $1.9 billion at October 31, 2015, the end of Piedmont's most recent fiscal year. Duke Energy expects to finance the transaction with a combination of debt, between $500 million and $750 million of newly issued equity and other cash sources. Duke Energy has a fully underwritten bridge facility to support funding of the merger. For further information on the Piedmont acquisition, refer to Note 2 to the Consolidated Financial Statements, “Acquisitions and Dispositions."
During 2014, Duke Energy declared a taxable dividend of foreign earnings in the form of notes payable that was intended to result in the repatriation of approximately $2.7 billion of cash held and expected to be generated by International Energy over a period of up to eight years. In 2015, approximately $1.5 billion was remitted. Approximately $300In 2016, $120 million is expected to bewas remitted. The remaining amount was remitted in 2016, with the remaining amount remitted by 2022. Duke Energy announced on February 18, 2016, it had initiated a process to divest the International Energy business segment, excluding the equity method investment in NMC. Duke Energy is in the preliminary stage and no binding or non-binding offers have been requested or submitted. Duke Energy can provide no assurance that this process will result in a transaction. Additional proceeds from the notes payable or from a successful salefirst quarter of International Energy will principally be used to fund the operations and growth of its domestic businesses.2017.
The Subsidiary Registrants generally maintain minimal cash balances and use short-term borrowings to meet their working capital needs and other cash requirements. The Subsidiary Registrants, excluding Progress Energy, support their short-term borrowing needs through participation with Duke Energy and certain of its other subsidiaries in a money pool arrangement. The companies with short-term funds may provide short-term loans to affiliates participating under this arrangement. See Note 6 to the Consolidated Financial Statements, “Debt and Credit Facilities,” for additional discussion of the money pool arrangement.
Duke Energy and the Subsidiary Registrants, excluding Progress Energy, may also use short-term debt, including commercial paper and the money pool, as a bridge to long-term debt financings. The levels of borrowing may vary significantly over the course of the year due to the timing of long-term debt financings and the impact of fluctuations in cash flows from operations. From time to time, Duke Energy’s current liabilities exceed current assets resulting from the use of short-term debt as a funding source to meet scheduled maturities of long-term debt, as well as cash needs, which can fluctuate due to the seasonality of its business.businesses.
Piedmont Acquisition
On October 3, 2016, Duke Energy acquired all outstanding common stock of Piedmont for a total cash purchase price of $5.0 billion, and assumed Piedmont's existing long-term debt, which had an estimated fair value of approximately $2.0 billion at the time of the acquisition. For further information on the acquisition, refer to Note 2 to the Consolidated Financial Statements, "Acquisitions and Dispositions."
Financings to fund the transaction included $3.75 billion of long-term debt issued in August 2016, $750 million borrowed under the Term Loan in September 2016, as well as the issuance of 10.6 million shares of common stock in October 2016. The share issuance resulted in net cash proceeds of approximately $723 million. See Note 6 to the Consolidated Financial Statements, "Debt and Credit Facilities," for additional information related to the debt issuance and Note 18, "Common Stock," for additional information related to the equity issuance.
International Energy
In February 2016, Duke Energy announced it had initiated a process to divest the International Disposal Group, and in October 2016, announced it had entered into two separate sales agreements to execute the divestiture. Both sales closed in December of 2016, resulting in available cash proceeds of $1.9 billion, excluding transaction costs. Proceeds were primarily used to reduce Duke Energy holding company debt. Existing favorable tax attributes result in no immediate U.S. federal-level cash tax impacts. For further information on the sale, refer to Note 2 to the Consolidated Financial Statements, "Acquisitions and Dispositions."

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Credit Facilities and Registration Statements
MasterAvailable Credit Facility SummaryFacilities
Duke Energy has a Master Credit Facility with a capacity of $7.5 billion through January 2020. The Duke Energy Registrants, excluding Progress Energy (Parent), and Piedmont, have borrowing capacity under the Master Credit Facility up to specified sublimits for each borrower. Duke Energy has the unilateral ability at any time to increase or decrease the borrowing sublimits of each borrower, subject to a maximum sublimit for each borrower. The amount available under the Master Credit Facility has been reduced to backstop the issuances of commercial paper, certain letters of credit and variable-rate demand tax-exempt bonds that may be put to the Duke Energy Registrants at the option of the holderholder. Duke Energy Carolinas and Duke Energy Progress are also required to each maintain $250 million of available capacity under the Master Credit Facility as security to meet obligations under plea agreements reached with the Plea Agreements. U.S. Department of Justice in 2015 related to violations at North Carolina facilities with ash basins.
Piedmont has a separate five-year revolving syndicated credit facility, with a capacity of $850 million through December 2020 and an expansion option of up to an additional $200 million. The facility provides a line of credit for letters of credit of $10 million.
The table below includes the current borrowing sublimits and available capacity under the Master Credit Facility.these credit facilities.
December 31, 2015December 31, 2016
  Duke
 Duke
 Duke
 Duke
 Duke
 Duke
  Duke
 Duke
 Duke
 Duke
 Duke
 Duke
Duke
 Energy
 Energy
 Energy
 Energy
 Energy
 Energy
Duke
 Energy
 Energy
 Energy
 Energy
 Energy
 Energy
(in millions) Energy
 (Parent)
 Carolinas
 Progress
 Florida
 Ohio
 Indiana
Energy(a)

 (Parent)
 Carolinas
 Progress
 Florida
 Ohio
 Indiana
Facility size(a)(b)
$7,500
 $3,475
 $800
 $1,000
 $1,200
 $425
 $600
$8,350
 $3,400
 $1,100
 $1,000
 $950
 $450
 $600
Reduction to backstop issuances                            
Commercial paper(b)(c)
(3,138) (1,531) (300) (333) (709) (115) (150)(2,022) (977) (300) (150) (84) (31) (150)
Outstanding letters of credit (72) (65) (4) (2) (1) 
 
(78) (69) (4) (2) (1) 
 
Tax-exempt bonds (116) 
 (35) 
 
 
 (81)(116) 
 (35) 
 
 
 (81)
Coal ash set-aside(c)
(500) 
 (250) (250) 
 
 
(500) 
 (250) (250) 
 
 
Available capacity $3,674

$1,879

$211

$415

$490

$310

$369
$5,634

$2,354

$511

$598

$865

$419

$369
(a)Represents the sublimit of each borrower at December 31, 2015. The Duke Energy Ohio sublimit includes $125Includes amounts related to Piedmont's $850 million for Duke Energy Kentucky.credit facility.
(b)Represents the sublimit of each borrower.
(c)Duke Energy issued $625 million of commercial paper and loaned the proceeds through the money pool to Duke Energy Carolinas, Duke Energy Progress, Duke Energy Ohio and Duke Energy Indiana. The balances are included withinclassified as Long-Term Debt Payable to Affiliated Companies in the Consolidated Balance Sheets.
(c)On May 14, 2015, the United States District Court for the Eastern District of North Carolina approved the separate Plea Agreements entered into by Duke Energy Carolinas, Duke Energy Progress and Duke Energy Business Services, LLC (DEBS), a wholly owned subsidiary of Duke Energy, in connection with the investigation initiated by the USDOJ. Duke Energy Carolinas and Duke Energy Progress are required to each maintain $250 million of available capacity under the Master Credit Facility as security to meet their obligations under the Plea Agreements, in addition to certain other conditions. See Note 5 to the Consolidated Financial Statements, “Commitments and Contingencies,” for additional information.

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Piedmont BridgeTerm Loan Facility
In connection with the Merger Agreement with Piedmont,2016, Duke Energy (Parent) entered into a $4.9$1.5 billion Bridge Facility with Barclays. The Bridge Facility, if drawn upon, may be used to (i) fund the cash consideration for the transaction and (ii) pay certain fees and expenses in connection with the transaction. In November 2015, Barclays syndicated its commitment under the Bridge Facility to a broader group of lenders. Duke Energy intends to finance the transaction with proceeds raised through the issuance of debt, equity and other sourcesterm loan facility, as noted above and, therefore, does not expect to draw upon the Bridge Facility.
Short-Term Loan Facility
On February 22,amended (Term Loan) maturing on July 31, 2017. During 2016, Duke Energy entered into a six-month term loan facility (Term Loan) with commitments totaling $1 billion to provide additional flexibility in managing short-term liquidity. The Term Loan can be drawn upon in a single borrowing of up to $1 billion, which must occur no later than 45 calendar days following February 22, 2016. As of February 24, 2016, no amounts have been drawn(Parent) drew the full amount available under the Term Loan. Amounts drawn under this facility, if any, will be due on August 19, 2016.Loan and used $750 million of proceeds to fund a portion of the Piedmont acquisition and the remaining $750 million to manage short-term liquidity and for general corporate purposes. The terms and conditions of thisthe Term Loan arewere generally consistent with those governing theDuke Energy’s Master Credit Facility discussed above.Facility. In December 2016, Duke Energy (Parent) repaid the $1.5 billion term loan which terminated this credit facility.
Shelf Registration
In September 2013,2016, Duke Energy filed a registration statement (Form S-3) with the SEC. Under this Form S-3, which is uncapped, the Duke Energy Registrants, excluding Progress Energy may issue debt and other securities in the future at amounts, prices and with terms to be determined at the time of future offerings. The registration statement also allows for the issuance of common stock by Duke Energy.
In January 2017, Duke Energy amended its Form S-3 to add Piedmont as a registrant and included in the amendment a prospectus for Piedmont under which it may issue debt securities in the same manner as other Duke Energy Registrants.

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CAPITAL EXPENDITURES
Duke Energy continues to focus on reducing risk and positioning its business for future success and will invest principally in its strongest business sectors. Based on this goal, the majority of Duke Energy’s total projected capital expenditures are allocated to the Regulated Utilities segment. Duke Energy’s projected capital and investment expenditures for the next three fiscal years are included in the table below.
(in millions) 2016
2017
2018
2017
2018
2019
New generation $1,275
$925
$825
$935
$690
$580
Regulated renewables70
65
385
Environmental 350
425
200
665
405
45
Nuclear fuel 525
425
425
425
425
395
Major nuclear 175
200
75
285
375
340
Customer additions 500
575
575
435
510
520
Grid modernization and other transmission and distribution projects 1,300
1,475
1,575
2,025
3,055
3,150
Maintenance 2,700
2,325
2,200
Total Regulated Utilities6,825
6,350
5,875
Commercial Portfolio, International Energy and Other 1,775
950
900
Total committed expenditures 8,600
7,300
6,775
Discretionary expenditures 175
1,200
1,025
Maintenance and other2,140
1,780
1,935
Total Electric Utilities and Infrastructure6,980
7,305
7,350
Gas Utilities and Infrastructure1,300
2,175
2,025
Commercial Renewables and Other500
550
700
Total projected capital and investment expenditures $8,775
$8,500
$7,800
$8,780
$10,030
$10,075
DEBT MATURITIES
The following table shows the significant components of Current maturities of Long-Term Debt on the Consolidated Balance Sheets. The Duke Energy Registrants currently anticipate satisfying these obligations with cash on hand and proceeds from additional borrowings.
(in millions)Maturity Date Interest Rate
 December 31, 2015
Maturity Date Interest Rate
 December 31, 2016
Unsecured Debt        
Progress Energy (Parent)January 2016 5.625% $300
Duke Energy IndianaJune 2016 6.05% 325
Duke Energy (Parent)November 2016 2.150% 500
April 2017 1.226% $400
Duke Energy (Parent)August 2017 1.625% 700
Piedmont Natural GasSeptember 2017 8.510% 35
First Mortgage Bonds        
Duke Energy IndianaJuly 2016 0.670% 150
Duke Energy ProgressMarch 2017 1.146% 250
Duke Energy FloridaSeptember 2017 5.800% 250
Duke Energy ProgressNovember 2017 1.111% 200
Secured    
Duke EnergyJune 2017 2.365% 45
Duke EnergyJune 2017 2.260% 34
Tax-exempt Bonds    
Duke Energy CarolinasDecember 2016 1.750% 350
February 2017 3.600% 77
Other   449
Duke Energy CarolinasFebruary 2017 0.810% 10
Duke Energy CarolinasFebruary 2017 0.790% 25
Other(a)
   293
Current maturities of long-term debt   $2,074
   $2,319
(a)Includes capital lease obligations, amortizing debt and small bullet maturities.
DIVIDEND PAYMENTS
In 2015,2016, Duke Energy paid quarterly cash dividends for the 90th consecutive year and expects to continue its policy of paying regular cash dividends in the future. There is no assurance as to the amount of future dividends because they depend on future earnings, capital requirements, financial condition and are subject to the discretion of the Board of Directors.

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Through 2020, theDuke Energy targets a dividend payout ratio is expected to beof between 70 percent and 75 percent, based upon adjusted diluted EPS. Over the past several years, Duke Energy’s dividend has grown at approximately 2 percent annually, slower than overall adjusted earnings growth. In 2015 and 2016, Duke Energy increased the dividend payout to grow the dividend atby approximately 4 percent annually, better matchingannually. Through 2021, the annual dividend growth rate is expected future earnings growth.to be approximately 4 to 6 percent.

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PART II

Dividend and Other Funding Restrictions of Duke Energy Subsidiaries
As discussed in Note 4 to the Consolidated Financial Statements, “Regulatory Matters,” Duke Energy’s wholly owned public utility operating companies have restrictions on the amount of funds that can be transferred to Duke Energy through dividends, advances or loans as a result of conditions imposed by various regulators in conjunction with merger transactions. Duke Energy Progress and Duke Energy Florida also have restrictions imposed by their first mortgage bond indentures and Articles of Incorporation which in certain circumstances limit their ability to make cash dividends or distributions on common stock. Additionally, certain other Duke Energy subsidiaries have other restrictions, such as minimum working capital and tangible net worth requirements pursuant to debt and other agreements that limit the amount of funds that can be transferred to Duke Energy. At December 31, 2015,2016, the amount of restricted net assets of wholly owned subsidiaries of Duke Energy that may not be distributed to Duke Energy in the form of a loan or dividend is less than 25 percent of Duke Energy’s net assets. Duke Energy does not have any legal or other restrictions on paying common stock dividends to shareholders out of its consolidated equity accounts. Although these restrictions cap the amount of funding the various operating subsidiaries can provide to Duke Energy, management does not believe these restrictions will have a significant impact on Duke Energy’s ability to access cash to meet its payment of dividends on common stock and other future funding obligations.
CASH FLOWS FROM OPERATING ACTIVITIES
The relatively stable operating cash flows of Regulated Utilities compose a substantial portion of Duke Energy’s cashCash flows from operations. Regulated Utilities’ cash flows from operations of Electric Utilities and Infrastructure and Gas Utilities and Infrastructure are primarily driven by sales of electricity and natural gas, respectively, and costs of operations. These cash flows from operations are relatively stable and comprise a substantial portion of Duke Energy’s operating cash flows. Weather conditions, working capital and commodity price fluctuations, and unanticipated expenses including unplanned plant outages, storms, and legal costs and related settlements can affect the timing and level of cash flows from operations.
Duke Energy believes it has sufficient liquidity resources through the commercial paper markets, and ultimately, the Master Credit Facility, to support these operations. Cash flows from operations are subject to a number of other factors, including, but not limited to, regulatory constraints, economic trends and market volatility (see Item 1A, “Risk Factors,” for additional information).
At December 31, 2015,2016, Duke Energy had cash and cash equivalents and short-term investments of $857 million, of which approximately $534 million is held by entities domiciled in foreign jurisdictions. In December 2014, Duke Energy declared a taxable dividend of historical foreign earnings in the form of notes payable that was expected to result in the repatriation of approximately $2.7 billion of cash held and expected to be generated by International Energy over a period of up to eight years. In 2015, approximately $1.5 billion was remitted.$392 million.
As of December 31, 2015, Duke Energy’s intention was to indefinitely reinvest undistributed earnings generated by Duke Energy's foreign subsidiaries. As a result, no U.S. tax is recorded on such earnings of approximately $250 million. The amount of unrecognized deferred tax liability related to undistributed earnings was approximately $12 million. On February 18, 2016, Duke Energy announced it had initiated a process to divest the International Energy business segment, excluding the investment in NMC. See Note 2 for further information. Accordingly, Duke Energy no longer intends to indefinitely reinvest the undistributed foreign earnings of International Energy and will therefore record U.S. taxes related to International Energy's undistributed foreign earnings during the first quarter of 2016.
Proceeds from the notes payable or from a successful sale of International Energy will principally be used to fund the operations and growth of its domestic businesses.
DEBT ISSUANCES
Depending on availability based on the issuing entity, the credit rating of the issuing entity, and market conditions, the Subsidiary Registrants prefer to issue first mortgage bonds and secured debt, followed by unsecured debt. This preference is the result of generally higher credit ratings for first mortgage bonds and secured debt, which typically result in lower interest costs. Duke Energy Corporation primarily issues unsecured debt.
Duke Energy’s capitalization is balanced between debt and equity as shown in the table below.
Projected 2016
 Actual 2015
 Actual 2014
Projected 2017
 Actual 2016
 Actual 2015
Equity 47% 48% 49%44% 45% 48%
Debt 53% 52% 51%56% 55% 52%
Duke Energy’s fixed charges coverage ratio, calculated using SECSecurities and Exchange Commission (SEC) guidelines, was 3.22.7 times for 2015, 3.22016, 3.1 times for 2014,2015, and 3.0 times for 2013.2014.
Restrictive Debt Covenants
Duke Energy’s debt and credit agreements contain various financial and other covenants. TheDuke Energy's Master Credit Facility contains a covenant requiring the debt-to-total capitalization ratio to not exceed 65 percent for each borrower. Piedmont's credit facility contains a debt-to-total capitalization covenant not to exceed 70 percent. Failure to meet those covenants beyond applicable grace periods could result in accelerated due dates and/or termination of the agreements or sublimits thereto. As of December 31, 2015,2016, each of the Duke Energy wasRegistrants were in compliance with all covenants related to itstheir debt agreements. In addition, some credit agreements may allow for acceleration of payments or termination of the agreements due to nonpayment, or to the acceleration of other significant indebtedness of the borrower or some of its subsidiaries. None of the debt or credit agreements contain material adverse change clauses.


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Credit Ratings
The Duke Energy Registrants each hold credit ratings by Fitch Ratings, Inc. (Fitch), Moody’s Investors Service, Inc. (Moody’s) and Standard & Poor’s Rating Services (S&P). The following table includes Duke Energy and certain subsidiaries’ credit ratings and ratings outlook as of February 2016.2017.
 Fitch Moody's S&P
Duke Energy CorporationWatch-NNegative Negative NegativeStable
Issuer Credit RatingBBB+ Baa1 A-
Senior Unsecured DebtBBB+ Baa1 BBB+
Commercial PaperF-2 P-2 A-2
Duke Energy CarolinasStable Stable NegativeStable
Senior Secured DebtAA- Aa2 A
Senior Unsecured DebtA+ A1 A-
Progress EnergyStable Stable NegativeStable
Senior Unsecured DebtBBB Baa2 BBB+
Duke Energy ProgressStable Stable Negative
Issuer Credit RatingA-A2A-Stable
Senior Secured DebtA+ Aa3 A
Duke Energy FloridaStable Stable NegativeStable
Senior Secured DebtA A1 A
Senior Unsecured DebtA- A3 A-
Duke Energy OhioStable Stable NegativeStable
Senior Secured DebtA A2 A
Senior Unsecured DebtA- Baa1 A-
Duke Energy IndianaPositive Stable NegativeStable
Senior Secured DebtA Aa3 A
Senior Unsecured DebtA- A2 A-
Duke Energy KentuckyStableStableStable
Senior Unsecured DebtA-Baa1A-
Piedmont Natural GasN/AStableStable
Senior UnsecuredN/AA2A-
Commercial PaperN/AP-1A-2
Credit ratings are intended to provide credit lenders a framework for comparing the credit quality of securities and are not a recommendation to buy, sell or hold. The Duke Energy Registrants’ credit ratings are dependent on the rating agencies’ assessments of their ability to meet their debt principal and interest obligations when they come due. If, as a result of market conditions or other factors, the Duke Energy Registrants are unable to maintain current balance sheet strength, or if earnings and cash flow outlook materially deteriorates, credit ratings could be negatively impacted.
Cash Flow Information
The following table summarizes Duke Energy’s cash flows for the three most recently completed fiscal years.
Years Ended December 31,Years Ended December 31,
(in millions) 2015

2014

2013
2016
 2015
 2014
Cash flows provided by (used in):           
Operating activities $6,676
 $6,586
 $6,382
$6,798
 $6,676
 $6,586
Investing activities (5,277) (5,373) (4,978)(11,533) (5,277) (5,373)
Financing activities (2,578) (678) (1,327)4,270
 (2,578) (678)
Net (decrease) increase in cash and cash equivalents (1,179)
535

77
Changes in cash and cash equivalents included in assets held for sale474
 1,099
 (548)
Net increase (decrease) in cash and cash equivalents9
 (80) (13)
Cash and cash equivalents at beginning of period 2,036
 1,501
 1,424
383
 463
 476
Cash and cash equivalents at end of period $857

$2,036

$1,501
$392
 $383
 $463

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OPERATING CASH FLOWS
The following table summarizes key components of Duke Energy’s operating cash flows for the three most recently completed fiscal year.years.
Years Ended December 31,Years Ended December 31,
(in millions) 2015

2014

2013
2016

2015

2014
Net income $2,831
 $1,889
 $2,676
$2,170
 $2,831
 $1,889
Non-cash adjustments to net income 4,800
 5,366
 4,876
5,398
 4,800
 5,366
Contributions to qualified pension plans (302) 
 (250)(155) (302) 
Payments for asset retirement obligations(346) (68) (12)
Payments for AROs(608) (346) (68)
Working capital (307) (601) (908)(7) (307) (601)
Net cash provided by operating activities $6,676

$6,586

$6,382
$6,798

$6,676

$6,586
For the year ended December 31, 2016 compared to 2015, the variance was driven primarily by:
a $300 million increase in cash flows from working capital primarily due to the sale of the international business; and
a $147 million decrease in contributions to qualified pension plans.
Offset by:
a $262 million increase in payments for AROs; and
a $63 million decrease in net income after non-cash adjustments due to higher storm costs offset by favorable weather, increased rider revenues, higher wholesale margins and strong cost control.
For the year ended December 31, 2015 compared to 2014, the variance was driven primarily by:
a $376 million increase in net income after non-cash adjustments resulting from increased retail pricing due to rate riders and higher base rates, increased wholesale net margins due to higher contracted amounts and prices, a new wholesale contract with NCEMPA, retail sales growthgrowth; and
a $294 million increase in cash flows from a working capital decrease primarily due to lower current year receivables resulting from unseasonably warmer weather in December 2015 and prior year under collection of fuel and purchased power due to increased consumption.
Partially offsetOffset by:
a $302 million increase in contributions to qualified pension plansplans; and
a $278 million increase in payments for asset retirement obligations.AROs.
For the year ended December 31, 2014 compared to 2013, the variance was driven primarily by:
a $204 million increase due to prior year contributions to qualified pension plans, favorable retail pricing and rate riders and favorable weather, partially offset by current year under collection of fuel and purchased power costs and timing of cash payments for operations and maintenance expenses.
INVESTING CASH FLOWS
The following table summarizes key components of Duke Energy’s investing cash flows for the three most recently completed fiscal years.
Years Ended December 31,Years Ended December 31,
(in millions) 2015

2014

2013
2016

2015

2014
Capital, investment and acquisition expenditures$(8,363) $(5,528) $(5,607)$(13,215) $(8,363) $(5,528)
Available for sale securities, net 3
 23
 173
83
 3
 23
Net proceeds from the sale of Midwest generation business and sales of equity investments and other assets2,968
 179
 277
Net proceeds from the sales of discontinued operations and other assets, net of cash divested1,418
 2,968
 179
Other investing items 115
 (47) 179
181
 115
 (47)
Net cash used in investing activities $(5,277)
$(5,373)
$(4,978)$(11,533)
$(5,277)
$(5,373)
The primary use of cash related to investing activities is capital, investment and acquisition expenditures, detailed by reportable business segment in the following table.
Years Ended December 31,Years Ended December 31,
(in millions) 2015

2014

2013
2016

2015

2014
Regulated Utilities $6,974
 $4,744
 $5,049
Commercial Portfolio 1,131
 555
 268
International Energy45
 67
 67
Electric Utilities and Infrastructure$6,649
 $6,852
 $4,642
Gas Utilities and Infrastructure5,519
 234
 121
Commercial Renewables857
 1,019
 514
Other 213
 162
 223
190
 258
 251
Total capital, investment and acquisition expenditures $8,363

$5,528

$5,607
$13,215

$8,363

$5,528

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PART II

For the year ended December 31, 2016 compared to 2015, the variance was driven primarily by:
a $4,852 million increase in capital, investment and acquisition expenditures mainly due to the Piedmont acquisition; and
a $1,550 million decrease in net proceeds from sales of discontinued operations mainly due to the variance in proceeds between the prior year sale of the Midwest generation business and the current year sale of the International business.
For the year ended December 31, 2015 compared to 2014, the variance was driven primarily by:
a $2,789 million increase in proceeds mainly due to the sale of the nonregulated Midwest generation business to Dynegy, Inc. (Dynegy); and
a $202 million return of collateral related to the Chilean acquisition in 2013. The collateral was used to repay a secured loan.

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PART II

Partially offset by:
a $2,835 million increase in capital, investment and acquisition expenditures mainly due to the acquisition of NCEMPA ownership interests in certain generating assets, fuel and spare parts inventory jointly owned with and operated by Duke Energy Progress and growth initiatives in electric and natural gas infrastructure, solar projects and natural-gas fired generation.
For the year ended December 31, 2014 compared to 2013, the variance was driven primarily by:
a $192 million return of collateral related to the Chilean hydro acquisition in 2013 and
a $150 million decrease in net proceeds from sales and maturities of available for sale securities, net of purchases.
FINANCING CASH FLOWS
The following table summarizes key components of Duke Energy’s financing cash flows for the three most recently completed fiscal years.
Years Ended December 31,Years Ended December 31,
(in millions) 2015
 2014
 2013
2016
 2015
 2014
Issuance of common stock related to employee benefit plans $17
 $25
 $9
(Repayments) Issuances of long-term debt, net (74) (123) 840
Issuance of common stock$731
 $17
 $25
Issuances (Repayments) of long-term debt, net7,315
 (74) (123)
Notes payable and commercial paper 1,245
 1,688
 93
(1,447) 1,245
 1,688
Dividends paid (2,254) (2,234) (2,188)(2,332) (2,254) (2,234)
Repurchase of common shares(1,500) 
 

 (1,500) 
Other financing items (12) (34) (81)3
 (12) (34)
Net cash used in financing activities $(2,578)
$(678)
$(1,327)
Net cash provided by (used in) financing activities$4,270
 $(2,578) $(678)
For the year ended December 31, 2016 compared to 2015, the variance was driven primarily by:
a $7,389 million increase in proceeds from net issuances of long-term debt mainly due to the issuances of $3,750 million of senior unsecured notes used to fund a portion of the Piedmont acquisition, $1,294 million of nuclear asset-recovery bonds and other issuances primarily used to fund capital expenditures, pay down outstanding commercial paper and repay debt maturities; and
a $1,500 million decrease in cash outflows due to the 2015 repurchase of 19.8 million common shares under the ASR; and
a $714 million increase in proceeds resulting from the issuance of common stock to fund the acquisition of Piedmont.
Partially offset by:
a $2,692 million increase in cash outflows for the net payments of notes payable and commercial paper primarily through the use of proceeds from $1,294 million nuclear asset-recovery bonds issued at Duke Energy Florida, further increased by the prior year use of short-term debt to repay long-term debt maturities at Duke Energy Florida in advance of the 2016 proceeds from the nuclear asset-recovery bonds.    
For the year ended December 31, 2015 compared to 2014, the variance was driven primarily by:
a $1,500 million increase in cash outflows due to the 2015 repurchase of 19.8 million common shares under the ASRASR; and
a $443 million decrease in proceeds from net issuances of notes payable and commercial paper primarily due to prior year financing with short-term debt in advance of the 2015 receipt of proceeds from the sale of the nonregulated Midwest generation business to Dynegy, net of current year financing with short-term debt used to repay long-term debt maturities at Duke Energy Florida in advance of the 2016 proceeds from the proposed issuance of securitization bonds relatedthe nuclear asset-recovery bonds.

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PART II

Summary of Significant Debt Issuances
Piedmont Acquisition Financing
In August 2016, Duke Energy issued $3.75 billion of senior unsecured notes in three separate series. The net proceeds were used to Crystal River Unit 3.
For the year ended December 31, 2014 compared to 2013, the variance was driven primarily by:
finance a $1,595 million increase in proceeds from net issuances of notes payable and commercial paper, primarily due to funding a larger proportion of total financing needs with short-term debt in advanceportion of the receiptPiedmont acquisition. The $4.9 billion Bridge Facility was terminated following the issuance of this debt. See Note 2 to the Consolidated Financial Statements, "Acquisitions and Dispositions," for additional information on the Piedmont acquisition.
Nuclear Asset-Recovery Bonds
In June 2016, DEFPF issued $1,294 million of nuclear asset-recovery bonds and used the proceeds to acquire nuclear asset-recovery property from its parent, Duke Energy Florida. The nuclear asset-recovery bonds are payable only from and secured by the nuclear asset-recovery property. DEFPF is consolidated for financial reporting purposes; however, the nuclear asset-recovery bonds do not constitute a debt, liability or other legal obligation of, or interest in, 2015Duke Energy Florida or any of its affiliates other than DEFPF. The assets of DEFPF, including the nuclear asset-recovery property, are not available to pay creditors of Duke Energy Florida or any of its affiliates. Duke Energy Florida used the proceeds from the sale to repay short-term borrowings under the intercompany money pool borrowing arrangement and make an equity distribution of $649 million to the ultimate parent, Duke Energy (Parent), which repaid short-term borrowings. See Notes 4 and 17 to the Consolidated Financial Statements, "Regulatory Matters" and "Variable Interest Entities," respectively, for additional information.
Solar Facilities Financing
In August 2016, Emerald State Solar, LLC, an indirect wholly owned subsidiary of Duke Energy, entered into a $333 million portfolio financing of approximately 22 North Carolina Solar facilities. Tranche A of $228 million is secured by substantially all the assets of the Midwest Generation business.solar facilities and is nonrecourse to Duke Energy. Tranche B of $105 million is secured by an Equity Contribution Agreement with Duke Energy. Proceeds were used to reimburse Duke Energy for a portion of previously funded construction expenditures related to the Emerald State Solar, LLC portfolio. The initial interest rate on the loans was six months London Interbank Offered Rate (LIBOR) plus an applicable margin of 1.75 percent plus a 0.125 percent increase every three years thereafter. In connection with this debt issuance, Emerald State Solar, LLC entered into two interest rate swaps to convert the substantial majority of the loan interest payments from variable rates to fixed rates of approximately 1.81 percent for Tranche A and 1.38 percent for Tranche B, plus the applicable margin. See Note 14 to the Consolidated Financial Statements, "Derivatives and Hedging," for further information on the notional amounts of the interest rate swaps.
Partially offset by:Duke Energy Florida Bond Issuance
In January 2017, Duke Energy Florida issued $900 million of first mortgage bonds. The issuance was split between a $963$250 million, decrease inthree-year series and a $650 million, 10-year series. The net issuancesproceeds from the issuance were used to repay at maturity $250 million aggregate principal amount of long-term debt, primarilybonds due September 2017, as well as to funding a larger proportion of total financing needs with short-term debt in 2014 than in 2013.fund capital expenditures for ongoing construction and capital maintenance and for general corporate purposes.
Summary of Significant Debt Issuances

     Year Ended December 31, 2015
       Duke
 Duke
 Duke
 Maturity Interest
 Duke
 Energy
 Energy
 Energy
Issuance DateDate Rate
 Energy
 (Parent)
 Carolinas
 Progress
Unsecured Debt           
November 2015(a)(b)
April 2024 3.750% $400
 $400
 $
 $
November 2015(a)(b)
December 2045 4.800% 600
 600
 
 
First Mortgage Bonds           
March 2015(c)
June 2045 3.750% 500
 
 500
 
August 2015(a)(d)
August 2025 3.250% 500
 
 
 500
August 2015(a)(d)
August 2045 4.200% 700
 
 
 700
Total issuances    $2,700
 $1,000
 $500
 $1,200

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The following tables summarize significant debt issuances (in millions).
     Year Ended December 31, 2016  
       Duke
 Duke
 Duke
 Duke
 Duke
 Duke
 Maturity Interest
 Duke
 Energy
 Energy
 Energy
 Energy
 Energy
 Energy
Issuance DateDate Rate
 Energy
 (Parent)
 Carolinas
 Progress
 Florida
 Ohio
 Indiana
Unsecured Debt                 
April 2016(a)
April 2023 2.875% $350
 $350
 $
 $
 $
 $
 $
August 2016September 2021 1.800% 750
 750
 
 
 
 
 
August 2016September 2026 2.650% 1,500
 1,500
 
 
 
 
 
August 2016September 2046 3.750% 1,500
 1,500
 
 
 
 
 
Secured Debt                 
June 2016(b)
March 2020 1.196% 183
 
 
 
 183
 
 
June 2016(b)
September 2022 1.731% 150
 
 
 
 150
 
 
June 2016(b)
September 2029 2.538% 436
 
 
 
 436
 
 
June 2016(b)
March 2033 2.858% 250
 
 
 
 250
 
 
June 2016(b)
September 2036 3.112% 275
 
 
 
 275
 
 
August 2016June 2034 2.747% 228
 
 
 
 
 
 
August 2016June 2020 2.747% 105
 
 
 
 
 
 
First Mortgage Bonds                 
March 2016(c)
March 2023 2.500% 500
 
 500
 
 
 
 
March 2016(c)
March 2046 3.875% 500
 
 500
 
 
 
 
May 2016(d)
May 2046 3.750% 500
 
 
 
 
 
 500
June 2016(c)
June 2046 3.700% 250
 
 
 
 
 250
 
September 2016(e)
October 2046 3.400% 600
 
 
 
 600
 
 
September 2016(c)
October 2046 3.700% 450
 
 
 450
 
 
 
November 2016(f)
December 2026 2.950% 600
 
 600
 
 
 
 
Total issuances    $9,127
 $4,100
 $1,600
 $450
 $1,894
 $250

$500
(a)Proceeds were used to pay down outstanding commercial paper and for general corporate purposes.
(b)The nuclear asset recovery bonds are sequential pay amortizing bonds. The maturity date above represents the scheduled final maturity date for the bonds.
(c)Proceeds were used to fund capital expenditures for ongoing construction, capital maintenance and for general corporate purposes.
(d)Proceeds were used to repay $325 million of unsecured debt due June 2016, $150 million of first mortgage bonds due July 2016 and for general corporate purposes.
(e)Proceeds were used to fund capital expenditures for ongoing construction, capital maintenance, to repay short-term borrowings under the intercompany money pool borrowing arrangement and for general corporate purposes.
(f)Proceeds were used to repay at maturity $350 million aggregate principal amount of certain bonds due December 2016, as well as to fund capital expenditures for ongoing construction and capital maintenance and for general corporate purposes.
     Year Ended December 31, 2015
       Duke
 Duke
 Duke
 Maturity Interest
 Duke
 Energy
 Energy
 Energy
Issuance DateDate Rate
 Energy
 (Parent)
 Carolinas
 Progress
Unsecured Debt           
November 2015(a)(b)
April 2024 3.750% $400
 $400
 $
 $
November 2015(a)(b)
December 2045 4.800% 600
 600
 
 
First Mortgage Bonds           
March 2015(c)
June 2045 3.750% 500
 
 500
 
August 2015(a)(d)
August 2025 3.250% 500
 
 
 500
August 2015(a)(d)
August 2045 4.200% 700
 
 
 700
Total issuances    $2,700
 $1,000
 $500
 $1,200
(a)Proceeds were used to repay short-term money pool and commercial paper borrowing issued to fund a portion of the NCEMPA acquisition, see Note 2 to the Consolidated Financial Statements, "Acquisitions Dispositions and Sales of Other Assets",Dispositions," for further information.
(b)Proceeds were used to refinance at maturity $300 million of unsecured notes at Progress Energy due January 2016.
(c)Proceeds were used to redeem at maturity $500 million of first mortgage bonds due October 2015.
(d)Proceeds were used to refinance at maturity $400 million of first mortgage bonds due December 2015.

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     Year Ended December 31, 2014
       Duke
 Duke
 Duke
 Maturity Interest
 Duke
 Energy
 Energy
 Energy
Issuance DateDate Rate
 Energy
 (Parent)
 Progress
 Florida
Unsecured Debt           
April 2014(a)
April 2024 3.750% 600
 600
 
 
April 2014(a)(b)
April 2017 0.613% 400
 400
 
 
June 2014(c)
May 2019 11.970% 108
 
 
 
June 2014(c)
May 2021 13.680% 110
 
 
 
Secured Debt           
March 2014(d)
March 2017 0.863% 225
 
 
 225
July 2014(e)
July 2036 5.340% 129
 
 
 
First Mortgage Bonds           
March 2014(f)
March 2044 4.375% 400
 
 400
 
March 2014(f)(g)
March 2017 0.435% 250
 
 250
 
November 2014(h)
December 2044 4.150% 500
 
 500
 
November 2014(g)(h)
November 2017 0.432% 200
 
 200
 
Total issuances    $2,922
 $1,000
 $1,350
 $225
(a)Proceeds were used to redeem $402 million of tax-exempt bonds at Duke Energy Ohio, the repayment of outstanding commercial paper and for general corporate purposes. See Note 13 to the Consolidated Financial Statements, "Related Party Transactions" for additional information related to the redemption of Duke Energy Ohio's tax-exempt bonds.
(b)The debt is floating rate based on three-month London Interbank Offered Rate (LIBOR) plus a fixed credit spread of 38 basis points.
(c)Proceeds were used to repay $196 million of debt for International Energy and for general corporate purposes. The interest rates include country specific risk premiums.
(d)Relates to the securitization of accounts receivable at a subsidiary of Duke Energy Florida. Proceeds were used to repay short-term borrowings under the intercompany money pool borrowing arrangement and for general corporate purposes. See Note 17 to the Consolidated Financial Statements, "Variable Interest Entities" for further details.
(e)Proceeds were used to fund a portion of Duke Energy's prior investment in the existing Wind Star renewables portfolio.
(f)Proceeds were used to repay short-term borrowings under the intercompany money pool borrowing arrangement and for general corporate purposes.
(g)The debt is floating rate based on three-month LIBOR plus a fixed credit spread of 20 basis points.
(h)Proceeds were used to repay to redeem $450 million of tax-exempt bonds, repay short-term borrowings under the intercompany money pool borrowing arrangement and for general corporate purposes.

PART II

Off-Balance Sheet Arrangements
Duke Energy and certain of its subsidiaries enter into guarantee arrangements in the normal course of business to facilitate commercial transactions with third parties. These arrangements include performance guarantees, stand-by letters of credit, debt guarantees, surety bonds and indemnifications.
Most of the guarantee arrangements entered into by Duke Energy enhance the credit standing of certain subsidiaries, non-consolidated entities or less than wholly owned entities, enabling them to conduct business. As such, these guarantee arrangements involve elements of performance and credit risk, which are not always included on the Consolidated Balance Sheets. The possibility of Duke Energy, either on its own or on behalf of Spectra Energy Capital, LLC (Spectra Capital) through indemnification agreements entered into as part of the January 2, 2007, spin-off of Spectra Energy Corp, (Spectra Energy), having to honor its contingencies is largely dependent upon the future operations of the subsidiaries, investees and other third parties, or the occurrence of certain future events.
Duke Energy performs ongoing assessments of their respective guarantee obligations to determine whether any liabilities have been incurred as a result of potential increased non-performance risk by third parties for which Duke Energy has issued guarantees.
See Note 7 to the Consolidated Financial Statements, “Guarantees and Indemnifications,” for further details of the guarantee arrangements.
Issuance of these guarantee arrangements is not required for the majority of Duke Energy’s operations. Thus, if Duke Energy discontinued issuing these guarantees, there would not be a material impact to the consolidated results of operations, cash flows or financial position.

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Other than the guarantee arrangements discussed above, normal operating lease arrangements and off-balance sheet debt related to non-consolidated VIEs, Duke Energy does not have any material off-balance sheet financing entities or structures. For additional information, see Note 5 and Note 17 to the Consolidated Financial Statements, “Commitments and Contingencies” and "Variable Interest Entities," respectively.
Contractual Obligations
Duke Energy enters into contracts that require payment of cash at certain specified periods, based on certain specified minimum quantities and prices. The following table summarizes Duke Energy’s contractual cash obligations as of December 31, 2015.2016.
Payments Due By PeriodPayments Due By Period
        More than
        More than
  Less than
 2-3 years
 4-5 years
 5 years
  Less than
 2-3 years
 4-5 years
 5 years
  1 year
 (2017 &
 (2019 &
 (2021 &
  1 year
 (2018 &
 (2020 &
 (2022 &
(in millions) Total
 (2016)
 2018)
 2020)
 beyond)
Total
 (2017)
 2019)
 2021)
 beyond)
Long-Term debt(a)
$36,376
 $1,970
 $5,687
 $4,858
 $23,861
$45,278
 $2,211
 $6,592
 $5,582
 $30,893
Interest payments on long-term debt(b)
24,846
 1,619
 3,041
 2,557
 17,629
29,961
 1,868
 3,500
 3,014
 21,579
Capital leases(c)
2,060
 173
 351
 360
 1,176
1,562
 148
 308
 322
 784
Operating leases(c)
1,699
 219
 343
 273
 864
1,850
 218
 386
 298
 948
Purchase obligations:(d)
  
   
   
   
   
 
  
  
  
  
Fuel and purchased power(e)(f)
19,852
 4,457
 5,731
 2,860
 6,804
25,353
 4,819
 6,136
 3,786
 10,612
Other purchase obligations(g)
10,737
 8,467
 1,564
 258
 448
7,688
 5,802
 719
 193
 974
Nuclear decommissioning trust annual funding(h)
270
 42
 29
 26
 173
315
 30
 28
 28
 229
Total contractual cash obligations(i)(j)
$95,840
 $16,947
 $16,746
 $11,192
 $50,955
$112,007
 $15,096
 $17,669
 $13,223
 $66,019
(a)See Note 6 to the Consolidated Financial Statements, “Debt and Credit Facilities.”
(b)Interest payments on variable rate debt instruments were calculated using December 31, 2015,2016, interest rates and holding them constant for the life of the instruments.
(c)See Note 5 to the Consolidated Financial Statements, “Commitments and Contingencies.” Amounts in the table above include the interest component of capital leases based on the interest rates stated in the lease agreements and exclude certain related executory costs. Amounts exclude contingent lease obligations.
(d)Current liabilities, except for current maturities of long-term debt, and purchase obligations reflected on the Consolidated Balance Sheets have been excluded from the above table.
(e)Includes firm capacity payments that provide Duke Energy with uninterrupted firm access to electricity transmission capacity and natural gas transportation contracts, as well as undesignated contracts and contracts that qualify as normal purchase/normal sale (NPNS). For contracts where the price paid is based on an index, the amount is based on market prices at December 31, 2015,2016, or the best projections of the index. For certain of these amounts, Duke Energy may settle on a net cash basis since Duke Energy has entered into payment netting arrangements with counterparties that permit Duke Energy to offset receivables and payables with such counterparties.
(f)Amounts exclude obligations under the OVEC purchase power agreement. See Note 17 to the Consolidated Financial Statements for additional information.
(g)Includes contracts for software, telephone, data and consulting or advisory services. Amount also includes contractual obligations for engineering, procurement and construction costs for new generation plants, and nuclear plant refurbishments, environmental projects on fossil facilities, maintenance and day to day contract work at certain wind and solar facilities, plant refurbishments, maintenance and day-to-day contract work and commitments to buy wind and combustion turbines.certain products. Amount excludes certain open purchase orders for services that are provided on demand, for which the timing of the purchase cannot be determined.

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(h)Related to future annual funding obligations to NDTF through nuclear power stations' re-licensingrelicensing dates. Amounts through 2017 include North Carolina jurisdictional amounts that Duke Energy Progress retained internally and is transitioning to its external decommissioning funds per a 2008 NCUC order. The transition of the original $131 million must be complete by December 31, 2017, and at least 10 percent must be transitioned each year. See Note 9 to the Consolidated Financial Statements, "Asset Retirement Obligations."
(i)Unrecognized tax benefits of $88$17 million are not reflected in this table as Duke Energy cannot predict when open income tax years will close with completed examinations. See Note 22 to the Consolidated Financial Statements, "Income Taxes."
(j)The table above excludes reserves for litigation, environmental remediation, asbestos-related injuries and damages claims and self-insurance claims (see Note 5 to the Consolidated Financial Statements, “Commitments and Contingencies”) because Duke Energy is uncertain as to the timing and amount of cash payments that will be required. Additionally, the table above excludes annual insurance premiums that are necessary to operate the business, including nuclear insurance (see Note 5 to the Consolidated Financial Statements, “Commitments and Contingencies”), funding of pension and other post-retirement benefit plans (see Note 21 to the Consolidated Financial Statements, "Employee Benefit Plans"), asset retirement obligations,AROs, including ash management expenditures (see Note 9 to the Consolidated Financial Statements, "Asset Retirement Obligations") and regulatory liabilities (see Note 4 to the Consolidated Financial Statements, “Regulatory Matters”) because the amount and timing of the cash payments are uncertain. Also excluded are Deferred Income Taxes and Investment Tax CreditsITCs recorded on the Consolidated Balance Sheets since cash payments for income taxes are determined based primarily on taxable income for each discrete fiscal year.

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QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
Risk Management Policies
The Enterprise Risk Management policy framework at Duke Energy includes strategy, operational, project execution and financial or transaction related risks. Enterprise Risk Management includes market risk as part of the financial and transaction related risks in its framework.
Duke Energy is exposed to market risks associated with commodity prices, interest rates, equity prices and foreign currency exchange rates. Duke Energy has established comprehensive risk management policies to monitor and manage these market risks. Duke Energy’s Chief Executive Officer and Chief Financial Officer are responsible for the overall approval of market risk management policies and the delegation of approval and authorization levels. The Finance and Risk Management Committee of the Board of Directors receives periodic updates from the Chief Risk Officer and other members of management on market risk positions, corporate exposures and overall risk management activities. The Chief Risk Officer is responsible for the overall governance of managing commodity price risk, including monitoring exposure limits.
The following disclosures about market risk contain forward-looking statements that involve estimates, projections, goals, forecasts, assumptions, risks and uncertainties that could cause actual results or outcomes to differ materially from those expressed in the forward-looking statements. Please review Item 1A, “Risk Factors,” and “Cautionary Statement Regarding Forward-Looking Information” for a discussion of the factors that may impact any such forward-looking statements made herein.
Commodity Price Risk
Duke Energy is exposed to the impact of market fluctuations in the prices of electricity, coal, natural gas and other energy-related products marketed and purchased as a result of its ownership of energy relatedenergy-related assets. Duke Energy’s exposure to these fluctuations is limited by the cost-based regulation of its regulated operations in its Regulated Utilities segment as these operations are typically allowed to recover substantially all of these costs through various cost-recovery clauses, including fuel clauses. While there may be a delay in timing between when these costs are incurred and when they are recovered through rates, changes from year to year generally do not have a material impact on operating results of these regulated operations.
Price risk represents the potential risk of loss from adverse changes in the market price of electricity or other energy commodities. Duke Energy’s exposure to commodity price risk is influenced by a number of factors, including contract size, length, market liquidity, location and unique or specific contract terms. Duke Energy employs established policies and procedures to manage risks associated with these market fluctuations, which may include using various commodity derivatives, such as swaps, futures, forwards and options. For additional information, see Note 14 to the Consolidated Financial Statements, “Derivatives and Hedging.”
The inputs and methodologies used to determine the fair value of contracts are validated by an internal group separate from Duke Energy’s deal origination function. While Duke Energy uses common industry practices to develop its valuation techniques, changes in its pricing methodologies or the underlying assumptions could result in significantly different fair values and income recognition.
Hedging Strategies
Duke Energy closely monitors risks associated with commodity price changes on its future operations and, where appropriate, uses various commodity instruments such as electricity, coal and natural gas forward contracts to mitigate the effect of such fluctuations on operations. Duke Energy’s primary use of energy commodity derivatives is to hedge the generation portfolio against exposure to the prices of power and fuel.
The majority of instruments used to manage Duke Energy’s commodity price exposure are either not designated as hedges or do not qualify for hedge accounting. These instruments are referred to as undesignated contracts. Mark-to-market changes for undesignated contracts entered into by regulated businesses are reflected as regulatory assets or liabilities on the Consolidated Balance Sheets. Undesignated contracts entered into by unregulated businesses are marked-to-market each period, with changes in the fair value of the derivative instruments reflected in earnings.
Duke Energy may also enter into other contracts that qualify for the normal purchase/normal sale (NPNS)NPNS exception. When a contract meets the criteria to qualify as an NPNS, Duke Energy applies such exception. Income recognition and realization related to NPNS contracts generally coincide with the physical delivery of the commodity. For contracts qualifying for the NPNS exception, no recognition of the contract’s fair value in the Consolidated Financial Statements is required until settlement of the contract as long as the transaction remains probable of occurring.

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Generation Portfolio Risks 
Duke Energy is primarily exposed to market price fluctuations of wholesale power, natural gas and coal prices in the RegulatedElectric Utilities segment.and Gas Utilities segments. The Duke Energy Registrants optimize the value of their generation portfolios, which include generation assets, fuel and emission allowances. Modeled forecasts of future generation output and fuel requirements are based on forward power and fuel markets. The component pieces of the portfolio are bought and sold based on models and forecasts of generation in order to manage the economic value of the portfolio in accordance with the strategies of the business units.
For the RegulatedElectric Utilities segment, the generation portfolio not utilized to serve retail operations or committed load is subject to commodity price fluctuations. However, the impact on the Consolidated Statements of Operations is partially offset by mechanisms in these regulated jurisdictions that result in the sharing of net profits from these activities with retail customers.
International Energy generally hedges their expected generation using long-term bilateral power sales contracts when favorable market conditions exist and are subject to wholesale commodity price risks for electricity not sold under such contracts. International Energy dispatches electricity not sold under long-term bilateral contracts into unregulated markets and receives wholesale energy margins and capacity revenues from national system operators.

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Interest Rate Risk
Duke Energy is exposed to risk resulting from changes in interest rates as a result of its issuance of variable and fixed-rate debt and commercial paper. Duke Energy manages interest rate exposure by limiting variable-rate exposures to a percentage of total debt and by monitoring the effects of market changes in interest rates. Duke Energy also enters into financial derivative instruments, which may include instruments such as, but not limited to, interest rate swaps, swaptions and U.S. Treasury lock agreements to manage and mitigate interest rate risk exposure. See Notes 1, 6, 14 and 16 to the Consolidated Financial Statements, “Summary of Significant Accounting Policies,” “Debt and Credit Facilities,” “Derivatives and Hedging,” and “Fair Value Measurements.”
At December 31, 2015,2016, Duke Energy had $727$777 million notional amount of floating-to-fixed swaps outstanding, $500 million notional amount of fixed-to-floating swaps outstanding and $1,300$400 million forward-starting swaps outstanding. In the first quarter of 2016, Duke Energy entered into an additional $500 million notional amount of forward-starting swaps. Duke Energy had $7.9$6.3 billion of unhedged long- and short-term floating interest rate exposure at December 31, 2015.2016. The impact of a 100 basis point change in interest rates on pretax income is approximately $79$63 million at December 31, 2015.2016. This amount was estimated by considering the impact of the hypothetical interest rates on variable-rate securities outstanding, adjusted for interest rate hedges as of December 31, 2015.2016.
See Notes 2 andNote 14, "Acquisitions and Dispositions" and Derivatives"Derivatives and Hedging," respectively, to the Consolidated Financial Statements for additional information about the forward-starting interest rate swaps related to the Piedmont acquisition.
Credit Risk
Credit risk represents the loss that the Duke Energy Registrants would incur if a counterparty fails to perform under its contractual obligations. Where exposed to credit risk, the Duke Energy Registrants analyze the counterparty's financial condition prior to entering into an agreement and monitor exposure on an on-goingongoing basis. The Duke Energy Registrants establish credit limits where appropriate in the context of contractual arrangements and monitor such limits.
To reduce credit exposure, the Duke Energy Registrants seek to include netting provisions with counterparties which permit the offset of receivables and payables with such counterparties. The Duke Energy Registrants also frequently use master agreements with credit support annexes to further mitigate certain credit exposures. The master agreements provide for a counterparty to post cash or letters of credit to the exposed party for exposure in excess of an established threshold. The threshold amount represents a negotiated unsecured credit limit for each party to the agreement, determined in accordance with the Duke Energy Registrants’ internal corporate credit practices and standards. Collateral agreements generally also provide that the inability to post collateral is sufficient cause to terminate contracts and liquidate all positions.
The Duke Energy Registrants also obtain cash or letters of credit from certain counterparties to provide credit support outside of collateral agreements, where appropriate, based on a financial analysis of the counterparty and the regulatory or contractual terms and conditions applicable to each transaction. See Note 14 to the Consolidated Financial Statements, “Derivatives and Hedging,” for additional information regarding credit risk related to derivative instruments.
The Duke Energy Registrants’ principal counterparties for its electric and gas businesses are regional transmission organizations, distribution companies, municipalities, electric cooperatives and utilities located throughout the U.S. and Latin America. The Duke Energy Registrants have concentrations of receivables from such entities throughout these regions. These concentrations of receivables may affect the Duke Energy Registrants’ overall credit risk in that risk factors can negatively impact the credit quality of the entire sector.
The Duke Energy Registrants are also subject to credit risk from transactions with their suppliers that involve pre-payments in conjunction with outsourcing arrangements, major construction projects and certain commodity purchases. The Duke Energy Registrants’ credit exposure to such suppliers may take the form of increased costs or project delays in the event of non-performance.nonperformance. The Duke Energy Registrants' frequently require guarantees or letters of credit from suppliers to mitigate this credit risk.
Credit risk associated with the Duke Energy Registrants’ service to residential, commercial and industrial customers is generally limited to outstanding accounts receivable. The Duke Energy Registrants mitigate this credit risk by requiring customers to provide a cash deposit, letter of credit or surety bond until a satisfactory payment history is established, subject to the rules and regulations in effect in each retail jurisdiction, at which time the deposit is typically refunded. Charge-offs for retail customers have historically been insignificant to the operations of the Duke Energy Registrants and are typically recovered through retail rates. Management continually monitors customer charge-offs and payment patterns to ensure the adequacy of bad debt reserves. Duke Energy Ohio and Duke Energy Indiana sell certain of their accounts receivable and related collections through Cinergy Receivables Company LLC (CRC), a Duke Energy consolidated variable interest entity. Losses on collection are first absorbed by the equity of CRC and next by the subordinated retained interests held by Duke Energy Ohio, Duke Energy Kentucky and Duke Energy Indiana. See Note 17 to the Consolidated Financial Statements, “Variable Interest Entities.”

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Duke Energy Carolinas has third-party insurance to cover certain losses related to asbestos-related injuries and damages above an aggregate self-insured retention. Duke Energy Carolinas’ cumulative payments began to exceed the self-insurance retention in 2008. Future payments up to the policy limit will be reimbursed by the third-party insurance carrier. The insurance policy limit for potential future insurance recoveries indemnification and medical cost claim payments is $847$814 million in excess of the self-insured retention. Receivables for insurance recoveries were $599$587 million and $616$599 million at December 31, 20152016 and 2014,2015, respectively. These amounts are classified in Other within Investments and Other Assets and Receivables on the Consolidated Balance Sheets. Duke Energy Carolinas is not aware of any uncertainties regarding the legal sufficiency of insurance claims. Duke Energy Carolinas believes the insurance recovery asset is probable of recovery as the insurance carrier continues to have a strong financial strength rating.
The Duke Energy Registrants also have credit risk exposure through issuance of performance guarantees, letters of credit and surety bonds on behalf of less than wholly owned entities and third parties. Where the Duke Energy Registrants have issued these guarantees, it is possible that they could be required to perform under these guarantee obligations in the event the obligor under the guarantee fails to perform. Where the Duke Energy Registrants have issued guarantees related to assets or operations that have been disposed of via sale, they attempt to secure indemnification from the buyer against all future performance obligations under the guarantees. See Note 7 to the Consolidated Financial Statements, “Guarantees and Indemnifications,” for further information on guarantees issued by the Duke Energy Registrants.

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Based on the Duke Energy Registrants’ policies for managing credit risk, their exposures and their credit and other reserves, the Duke Energy Registrants do not currently anticipate a materially adverse effect on their consolidated financial position or results of operations as a result of non-performance by any counterparty.
Marketable Securities Price Risk
As described further in Note 15 to the Consolidated Financial Statements, “Investments in Debt and Equity Securities,” Duke Energy invests in debt and equity securities as part of various investment portfolios to fund certain obligations. The vast majority of investments in equity securities are within the NDTF and assets of the various pension and other post-retirement benefit plans.
Pension Plan Assets
Duke Energy maintains investments to facilitate funding the costs of providing non-contributory defined benefit retirement and other post-retirement benefit plans. These investments are exposed to price fluctuations in equity markets and changes in interest rates. The equity securities held in these pension plans are diversified to achieve broad market participation and reduce the impact of any single investment, sector or geographic region. Duke Energy has established asset allocation targets for its pension plan holdings, which take into consideration the investment objectives and the risk profile with respect to the trust in which the assets are held. See Note 21 to the Consolidated Financial Statements, “Employee Benefit Plans” for additional information regarding investment strategy of pension plan assets.
A significant decline in the value of plan asset holdings could require Duke Energy to increase funding of its pension plans in future periods, which could adversely affect cash flows in those periods. Additionally, a decline in the fair value of plan assets, absent additional cash contributions to the plan, could increase the amount of pension cost required to be recorded in future periods, which could adversely affect Duke Energy’s results of operations in those periods.
Nuclear Decommissioning Trust Funds
As required by the NRC, NCUC, PSCSC and FPSC,the Florida Public Service Commission (FPSC), subsidiaries of Duke Energy maintain trust funds to fund the costs of nuclear decommissioning. As of December 31, 2015,2016, these funds were invested primarily in domestic and international equity securities, debt securities, cash and cash equivalents and short-term investments. Per the NRC, Internal Revenue Code, NCUC, PSCSC and FPSC requirements, these funds may be used only for activities related to nuclear decommissioning. These investments are exposed to price fluctuations in equity markets and changes in interest rates. Duke Energy actively monitors its portfolios by benchmarking the performance of its investments against certain indices and by maintaining, and periodically reviewing, target allocation percentages for various asset classes.
Accounting for nuclear decommissioning recognizes that costs are recovered through retail and wholesale rates; therefore, fluctuations in equityinvestment prices do not materially affect the Consolidated Statements of Operations, as changes in the fair value of these investments are primarily deferred as regulatory assets or regulatory liabilities pursuant to Orders by the NCUC, PSCSC, FPSC and FPSC.FERC. Earnings or losses of the fund will ultimately impact the amount of costs recovered through retail and wholesale rates. See Note 9 to the Consolidated Financial Statements, “Asset Retirement Obligations” for additional information regarding nuclear decommissioning costs. See Note 15 to the Consolidated Financial Statements, “Investments in Debt and Equity Securities” for additional information regarding NDTF assets.
Foreign Currency Risk
Duke Energy is exposed to foreign currency risk from investments in international businesses owned and operated in countries outside the U.S. and from certain commodity-related transactions within domestic operations that are denominated in foreign currencies. To mitigate risks associated with foreign currency fluctuations, contracts may be denominated in or indexed to the U.S. dollar and/or local inflation rates, or investments may be naturally hedged through debt denominated or issued in the foreign currency. Duke Energy may also use foreign currency derivatives, where possible, to manage its risk related to foreign currency fluctuations. To monitor its currency exchange rate risks, Duke Energy uses sensitivity analysis, which measures the impact of devaluation of the foreign currencies to which it has exposure.
Duke Energy’s primary foreign currency rate exposure is to the Brazilian real. The table below summarizes the potential effect of foreign currency devaluations on Duke Energy’s Consolidated Statement of Operations and Consolidated Balance Sheets, based on a sensitivity analysis performed as of December 31, 2015 and December 31, 2014.
Summary of Sensitivity Analysis for Foreign Currency Risks
 Assuming 10 percent devaluation
 in the currency exchange rates in
  all exposure currencies
  As of December 31,
(in millions)  2015
 2014
Income Statement impact(a)
$(17) $(20)
Balance Sheet impact(b)
(74) (98)
(a)    Amounts represent the potential annual net pretax loss on the translation of local currency earnings to the U.S. dollar in
2015 and 2014, respectively.
(b)Amounts represent the potential impact to the currency translation through Accumulated Other Comprehensive Income (AOCI) on the Consolidated Balance Sheets.

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OTHER MATTERS
Ratios of Earnings to Fixed Charges
The Duke Energy Registrants’ ratios of earnings to fixed charges, as calculated using SEC guidelines, are included in the table below.
Years Ended December 31,Years Ended December 31,
2015
 2014
 2013
2016
 2015
 2014
Duke Energy3.2
 3.2
 3.0
2.7
 3.1
 3.0
Duke Energy Carolinas4.7
 4.6
 4.4
4.7
 4.7
 4.6
Progress Energy2.9
 2.7
 2.2
3.0
 2.9
 2.7
Duke Energy Progress3.7
 3.5
 3.7
4.0
 3.7
 3.5
Duke Energy Florida4.3
 4.1
 2.9
4.3
 4.3
 4.1
Duke Energy Ohio3.6
 2.1
 2.2
3.8
 3.6
 2.1
Duke Energy Indiana3.6
 4.1
 4.1
4.1
 3.6
 4.1
Environmental Regulations
The Duke Energy is subject to international, federal, state and local regulations regarding air and water quality, hazardous and solid waste disposal and other environmental matters. The Subsidiary Registrants are subject to federal, state and local regulations regarding air and water quality, hazardous and solid waste disposal and other environmental matters. These regulations can be changed from time to time and result in new obligations of the Duke Energy Registrants.
The following sections outline various proposed and recently enacted regulations that may impact the Duke Energy Registrants. Refer to Note 4 to the Consolidated Financial Statements, "Regulatory Matters," for further information regarding potential plant retirements and regulatory filings related to the Duke Energy Registrants.
Coal Combustion Residuals
OnIn April 17, 2015, the EPA published in the Federal Register a rule to regulate the disposal of CCR from electric utilities as solid waste. The federal regulation which became effective in October 2015, classifies CCR as nonhazardous waste under Subtitle D of the Resource Conservation and Recovery Act and allows for beneficial use of CCR with some restrictions. The regulation applies to all new and existing landfills, new and existing surface impoundments receiving CCR and existing surface impoundments that are no longer receiving CCR but contain liquid located at stations currently generating electricity (regardless of fuel source). The rule establishes requirements regarding landfill design, structural integrity design and assessment criteria for surface impoundments, groundwater monitoring, protection and protectionremedial procedures and other operational and reporting procedures to ensure the safe disposal and management of CCR. As a result of the EPA rule, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Ohio and Duke Energy Indiana recorded additional ARO amounts during 2015. Various industry and environmental parties have appealed the EPA's CCR rule in the U.S. Court of Appeals for the District of Columbia (D.C. Circuit Court). On April 18, 2016, the EPA filed a motion with the federal court to settle five issues raised in litigation. On June 14, 2016, the court approved the motion with respect to all of those issues. A decision by the court on the remaining issues is expected in the second quarter of 2017. Duke Energy does not expect a material impact from the settlement or that it will result in additional ARO adjustments.
In addition to the requirements of the federal CCR regulation, CCR landfills and surface impoundments will continue to be independently regulated by most states. Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Ohio and Duke Energy Indiana recorded asset retirement obligation amounts during 2015. Cost recovery for future expenditures will be pursued through the normal ratemaking process with federal and state utility commissions and via wholesale contracts, which permit recovery of necessary and prudently incurred costs associated with Duke Energy’s regulated operations. For more information, see Note 9 to the Consolidated Financial Statements, "Asset Retirement Obligations."
Duke Energy Ohio's nonregulated Beckjord station, a facility retired during 2014, is not subject to the recently enacted EPA rule related to the disposal of CCR from electric utilities. However, if costs are incurred as a result of environmental regulations or to mitigate risk associated with on-site storage of coal ash at the facility, the costs could have an adverse impact on Duke Energy Ohio's financial position, results of operations and cash flows. Costs incurred by OVEC related to environmental regulations could also have an adverse impact on Duke Energy Ohio's financial position, results of operations and cash flows.
North Carolina Coal Ash Management Act of 2014
On September 20, 2014,AROs recorded on the Duke Energy Carolinas and Duke Energy Progress Consolidated Balance Sheets at December 31, 2016, and December 31, 2015, include the legal obligation for closure of coal ash basins and the disposal of related ash as a result of the Coal Ash Act, became lawthe EPA CCR rule and was amended on June 24, 2015, byother agreements. In January 2016, the North Carolina Mountain Energy Act. The Coal Ash Act, as amended, established regulations regarding the use and closure of existing ash impoundments, the disposal of ash at active coal plants and the handling of surface and groundwater impacts from ash basins in North Carolina. The Coal Ash Act, as amended, deemed eight ash impoundments at four facilities to be high priority and requires closure no later than August 1, 2019, with a potential extension for closure of the Asheville impoundment until 2022. The Coal Ash Act requires state regulators to provideNCDEQ published draft risk ranking classifications for the remaining 25 ash impoundments at 10 North Carolina facilities. The method and timing of closure of these ash impoundments will be determined by the specific risk classifications, with closure no later than December 31, 2029.
Other than the high priority sites not specifically delineated by the Coal Ash Act the NCDEQ has issued either preliminary draft risk rankings or has yet to designate specific risk classifications.as high risk. These risk rankings were generally determined based on three primary criteria: structural integrity of the impoundments and impactimpacts to both surface water and groundwaters. NCDEQto groundwater. The NCDEQ's draft proposed classifications categorized 12 basins at four sites as intermediate risk and four basins at three plantssites as low risk. NCDEQThe NCDEQ's draft proposed classifications also categorized nine basins at six plantssites as "low-to-intermediate"“low-to-intermediate” risk, thereby not assigning a proposeddefinitive risk ranking at thisthat time. On May 18, 2016, the NCDEQ issued new proposed risk classifications, proposing to rank all originally proposed low risk and "low-to-intermediate" risk sites as intermediate.
On July 14, 2016, the former governor of North Carolina signed legislation which amended the Coal Ash Act and required Duke Energy to undertake dam improvement projects and to provide access to a permanent alternative drinking water source to certain residents within a half mile of coal ash basin compliance boundaries and to certain other potentially impacted residents. The new legislation also ranks basins at the H.F. Lee, Cape Fear and Weatherspoon stations as intermediate risk rankingsconsistent with Duke Energy's previously announced plans to excavate those basins. These specific intermediate risk basins require closure through excavation including a combination of transferring ash to an appropriate engineered landfill or conversion of the ash for beneficial use. Closure of these sites willspecific intermediate risk basins is required to be based upon receipt of additional data primarily related to groundwater quality and thecompleted no later than August 1, 2028. Upon satisfactory completion of specific modificationsthe dam improvement projects and repairsinstallation of alternative drinking water sources by October 15, 2018, the legislation requires the NCDEQ to reclassify sites proposed as intermediate risk, excluding H.F. Lee, Cape Fear and Weatherspoon, as low risk. In January 2017, NCDEQ issued preliminary approval of Duke Energy's plans for the impoundments. NCDEQ is expected to finalize its risk classifications after a public comment process. Finalalternative water sources.

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Per the Coal Ash Act, final proposed classifications arewere to be subject to Coal Ash Management Commission adjustments and approval but may become law if(Coal Ash Commission) approval. In March 2016, the Coal Ash Commission fails to act within 60 dayscreated by the Coal Ash Act was disbanded by the former governor of receiving the final proposed classifications. Estimated asset retirement obligations have been recognized based on the assigned risk categories or, if not assigned,North Carolina based on a probability weighting of potential closure methods. Actual closure costs incurred could be materially different from current estimates that formNorth Carolina Supreme Court ruling regarding the basisconstitutionality of the recorded asset retirement obligations. body. The July 2016 legislation eliminates the Coal Ash Commission and transfers responsibility for ash basin closure oversight to the NCDEQ.
Additionally, the July 2016 legislation requires the installation and operation of three large-scale coal ash beneficiation projects which are expected to produce reprocessed ash for use in the concrete industry. Closure of basins at sites with these beneficiation projects are required to be completed no later than December 31, 2029. On October 5, 2016, Duke Energy announced Buck Steam Station as a first location for one of the beneficiation projects. On December 13, 2016, Duke Energy announced H.F. Lee as the second location. Duke Energy intends to announce the third location by July 1, 2017.
The Coal Ash Act includes a variance procedure for compliance deadlines and other issues surrounding the management of CCR and CCR surface impoundments.
Provisions of the Coal Ash Act prohibit cost recovery in customer rates for unlawful discharge of ash impoundment waters occurring after January 1, 2014. The Coal Ash Act leaves the decision on cost recovery determinations related to closure of ash impoundments to the normal ratemaking processes before utility regulatory commissions. Consistent with the requirements of the Coal Ash Act, Duke Energy has submitted comprehensive site assessments and groundwater corrective plans to NCDEQ and will submit to NCDEQ site-specific coal ash impoundment closure plans in advance of closure. These plans and all associated permits must be approved by NCDEQ before closure work can begin.
For further information on asset retirement obligations, refer toAROs, see Note 9 to the Consolidated Financial Statements, “Asset Retirement Obligations.”

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Mercury and Air Toxics Standards
The final Mercury and Air Toxics Standards (MATS) rule was issued on February 16, 2012. The rule establishesestablished emission limits for hazardous air pollutants from new and existing coal-fired and oil-fired steam electric generating units.units (EGUs). The rule required sources to comply with emission limits by April 16, 2015. Under the Clean Air Act (CAA), permitting authorities have the discretion to grant up to a one-year compliance extension, on a case-by-case basis, to sources that are unable to complete the installation of emission controls before the compliance deadline. The Duke Energy Registrants have requested and received compliance extensions for a number of plants. The rule requirements currently apply where a compliance extension was not received.2015, or by April 16, 2016, with approved extension. Strategies to achieve compliance includeincluded installation of new air emission control equipment, development of monitoring processes, fuel switching and acceleration of retirement for some coal-fired electric-generation units. For additional information, refer to Note 4EGUs. All of Duke Energy's coal-fired units are in compliance with the emission limits, work practices standards and other requirements of the Consolidated Financial Statements, “Regulatory Matters,” regarding potential plant retirements.
In April 2014, several petitions for review of the final rule were denied by the U.S. Court of Appeals for the District of Columbia (D.C. Circuit Court). On November 25, 2014, the Supreme Court granted a petition for review based on the issue of whether the EPA unreasonably refused to consider costs in determining whether it is appropriate and necessary to regulate hazardous air pollutants from coal-fired and oil-fired steam electric generating units. In June 2015, the Supreme Court reversed the D.C. Circuit Court's decision and remanded the case to the D.C. Circuit Court for further proceedings, finding that the EPA erred in refusing to consider costs when deciding whether it was appropriate and necessary to regulate emissions of hazardous air pollutants from steam electric generating units. In December 2015, the D.C. Circuit Court granted the EPA's request to keep the rule in effect while the agency completes the rulemaking in response to the Supreme Court's ruling. On December 1, 2015 the EPA proposed a supplemental finding to address the cost issue raised by the Supreme Court in its June 2015 ruling. If finalized as proposed, the finding would result in no changes to the current MATS regulatory requirements. The EPA has committed to complete its rulemaking by April 2016. The Duke Energy Registrants cannot predict the results of these proceedings.rule.
Clean Water Act 316(b)
The EPA published the final 316(b) cooling water intake structure rule on August 15, 2014, with an effective date of October 14, 2014. The rule applies to 26 of the electric generating facilities the Duke Energy Registrants own and operate. The rule allows for several options to demonstrate compliance and provides flexibility to the state environmental permitting agencies to make determinations on controls, if any, that will be required for cooling water intake structures. Any required intake structure modifications and/or retrofits are expected to be installed in the 2019 to 2022 time frame. Petitions challenging the rule have been filed by several groups. It is unknown at this time when the courts will rule on the petitions. The Duke Energy Registrants cannot predict the outcome of these matters.
Steam Electric Effluent Limitations Guidelines
On January 4, 2016, the final Steam Electric Effluent Limitations Guidelines (ELG) rule became effective. The rule establishes new requirements for wastewater streams associated with steam electric power generation and includes more stringent controls for any new coal plants that may be built in the future. Affected facilities must comply between 2018 and 2023, depending on timing of new Clean Water Act (CWA) permits. Most, if not all, of the steam electric generating facilities the Duke Energy Registrants own are likely affected sources. The Duke Energy Registrants are well positionedwell-positioned to meet the majority of the requirements of the rule due to current efforts to convert to dry ash handling. Petitions challenging the rule have been filed by several groups. On March 16, 2015, Duke Energy Indiana filed its own legal challenge to the rule with the Seventh Circuit Court of Appeals specific to the ELG for wastewater associated rule focused on the limits imposed on integrated gas combined-cycle facilities. All challenges to the rule have been consolidated in the Fifth Circuit Court of Appeals. Opening briefs were submitted on December 5, 2016. Briefing concludes on June 5, 2017, and oral argument has not been scheduled. It is unknown at this time when the courts will rule on the petitions. The Duke Energy Registrants cannot predict the outcome of these matters.
Estimated Cost and Impacts of Rulemakings
Duke Energy will incur capital expenditures to comply with the environmental regulations and rules discussed above. The following five-year table provides five-year estimated costs, excluding AFUDC, of new control equipment that may need to be installed on existing power plants primarily to comply with the Coal Ash Act requirements for conversion to dry disposal of bottom ash and fly ash, MATS, Clean Water ActCWA 316(b) and ELGs through December 31, 2020.2021. The table excludes ash basin closure costs recorded asin Asset retirement obligations on the Consolidated Balance Sheets. For more information related to asset retirement obligations,AROs, see Note 9 to the Consolidated Financial Statements.
(in millions) Five-Year Estimated Costs
Five-Year Estimated Costs
Duke Energy $1,350
$1,200
Duke Energy Carolinas 625
530
Progress Energy 350
325
Duke Energy Progress 300
260
Duke Energy Florida 50
65
Duke Energy Ohio 100
125
Duke Energy Indiana 275
220

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The Duke Energy Registrants also expect to incur increased fuel, purchased power, operation and maintenance and other expenses, in addition to costs for replacement generation for potential coal-fired power plant retirements, as a result of these regulations. Actual compliance costs incurred may be materially different from these estimates due to reasons such as the timing and requirements of EPA regulations and the resolution of legal challenges to the rules. The Duke Energy Registrants intend to seek rate recovery of necessary and prudently incurred costs associated with regulated operations to comply with these regulations.
Cross-State Air Pollution Rule
On August 8, 2011, the final Cross-State Air Pollution Rule (CSAPR) was published in the Federal Register. The CSAPR established state-level annual sulfur dioxide (SO2) budgets and annual and seasonal nitrogen oxide (NOx) budgets that were to take effect on January 1, 2012.

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On August 21, 2012, the D.C. Circuit Court vacated the CSAPR. The court also directed the EPA to continue administering the Clean Air Interstate Rule (CAIR), which required additional reductions in SO2 and NOX emissions beginning in 2015. On April 29, 2014, the U.S. Supreme Court (Supreme Court) reversed the D.C. Circuit Court’s decision, finding that with CSAPR the EPA reasonably interpreted the good neighbor provision of the CAA. The case was remanded to the D.C. Circuit Court for further proceedings consistent with the Supreme Court’s opinion. On October 23, 2014, the D.C. Circuit Court lifted the CSAPR stay, which allowed Phase 1 of the rule to take effect on January 1, 2015, terminating the CAIR. Where the CSAPR requirements are constraining, actions to meet the requirements could include purchasing emission allowances, power purchases, curtailing generation and utilizing low sulfur fuel. The CSAPR will not result in Duke Energy Registrants adding new emission controls.
Additional legal challenges to the CSAPR filed in 2012, not addressed by the D.C. Circuit Court decision to vacate the CSAPR, are still ongoing. Oral arguments were held February 25, 2015. On July 28, 2015, the court issued decisions finding certain Phase 1 and 2 emissions budgets invalid, which impact South Carolina, North Carolina and Florida. The court remanded the CSAPR to the EPA for reconsideration of the budgets in question. On December 3, 2015, the EPA proposed a rule to lower the current CSAPRCross-State Air Pollution Rule (CSAPR) Phase 2 state ozone season NOnitrogen oxide (NOX) emission budgets for 23 Easterneastern states, including North Carolina, Ohio, Kentucky and Indiana. The EPA also proposed to eliminate the CSAPR Phase 2 ozone season state NOXbudgets for Florida and South Carolina. TheOn September 7, 2016, the EPA proposedfinalized a CSAPR update rule that reduces the CSAPR Phase 2 state ozone season NOX emission budgets for 22 eastern states, including Ohio, Kentucky and Indiana. In the final CSAPR update rule, the EPA removed Florida, South Carolina and North Carolina from the ozone season NOx program. Beginning in 2017, Duke Energy Registrants in these changesstates will not be subject to any CSAPR ozone season NOx emission limitations. For the states that remain in the program, the reduced state ozone season NOx emission budgets will take effect on May 1, 2017. TheIn Kentucky and Indiana, where Duke Energy Registrants cannot predictown and operate coal-fired EGUs subject to the outcomefinal rule requirements, potential near-term responses could include changing unit dispatch to run certain generating units less frequently and/or purchasing NOx allowances from the trading market. Longer term, upgrading the performance of these proceedings.existing NOx controls is an option.
Carbon Pollution Standards for New, Modified and Reconstructed Power Plants
On October 23, 2015, the EPA published a final rule in the Federal Register establishing carbon dioxide (CO2) emissions limits for new, modified and reconstructed power plants. The requirements for new plants do not apply to any facility that Duke Energy currently has in operation, but would apply to any plants that will be constructed going forward.commenced construction after January 8, 2014. The EPA set an emissions standard for coal units of 1,400 lbs.pounds of CO2per gross MWh. While this limit is higher than the EPA's proposed standard of 1,100 lbs. per MWh, itwhich would still require the application of partial carbon capture and storage (CCS) technology for a coal unit to be able to meet the limit. Utility-scale CCS is not currently a demonstrated and commercially available technology for coal-fired electric generating units,EGUs, and therefore the final standard effectively barsprevents the development of new coal-fired generation. The EPA set a final standard of 1,000 lbs.pounds of CO2per gross MWh for new natural gas combined-cycle units isunits. Petitions challenging the same asrule have been filed by several groups. Final briefs in the proposed limit.case were due February 6, 2017. Oral arguments are scheduled for April 2017. The Duke Energy Registrants do not expect the impacts of the final standards will be material to Duke Energy's financial position, results of operations or cash flows.
Clean Power Plan
On October 23, 2015, the EPA published in the Federal Register the CPPfinal Clean Power Plan (CPP) rule that regulates CO2 emissions from existing fossil fuel-fired EGUs. The CPP establishesestablished CO2 emission rates and mass cap goals that apply to existing fossil fuel-fired generation. UnderEGUs. Petitions challenging the CPP, states are required to develop and submit a final compliance plan, or an initial plan with an extension request, to the EPA by September 6, 2016. States that receive an extension must submit a final completed plan to the EPA by September 6, 2018. The EPA intends to review and approve or disapprove state plans within 12 months of receipt. The CPP does not directly impose regulatory requirements on the Duke Energy Registrants. State implementation plans will include the regulatory requirements that will apply to the Duke Energy Registrants. The EPA also published a proposed federal plan for public comment. A federal plan would be applied to states that fail to submit a plan to EPA or where a state plan is not approved by the EPA. Comments on the proposed federal plan were due by January 21, 2016.
Legal challenges to the final CPPrule have been filed by stakeholders. On January 21, 2016 the U.S. Court of Appeals for the District of Columbia denied motions from petitioners to stay the Clean Power Plan pending court review. The court did grant petitioner requests for expedited briefing in the case. Oral arguments are scheduled in June 2016. The court ordered that final briefs in the case be filed by April 22, 2016. Onseveral groups and on February 9, 2016, the U.S. Supreme Court grantedissued a stay inof the matter,final CPP rule, halting enforcementimplementation of the CPP until legal challenges are resolved. States in which the Duke Energy Registrants operate have suspended work on the CPP in response to the stay. Oral arguments before 10 of the 11 judges on D.C. Circuit Court were heard on September 27, 2016. The court is expected to decide the case in early 2017.
Compliance with CPP could cause the industry to replace coalcoal-fired generation with natural gas and renewables. Costs to operate coal-fired generation plants continue to grow due to increasing environmental compliance requirements, including ash management costs unrelated to CPP, which may result in the retirement of coal-fired generation plants earlier than the current end of useful lives. The Duke Energy Registrants are studyingIf the CPP ruleis ultimately upheld by the courts and are working with states to identifyimplementation goes forward, the best approach for developing state plans that will establish the regulatory requirements applicable to the Duke Energy Registrants. The Duke Energy Registrants could incur increased fuel, purchased power, operation and maintenance and other costs for replacement generation as a result of this rule. Due to the uncertainties related to the implementation of the CPP, the Duke Energy Registrants cannot predict the outcome of these matters.
Global Climate Change
The Duke Energy Registrants’ greenhouse gas (GHG) emissions consist primarily of CO2 with most comingand result primarily from theiroperating a fleet of coal-fired power plants in the U.S.plants. In 2015,2016, the Duke Energy Registrants’ power plants in the U.S. emitted approximately 108107 million tons of CO2. Duke Energy’s international operations emitted approximately 2 million tons of CO2 in 2015. The Duke Energy Registrants’ futureFuture CO2 emissions will be influenced by variables includingthat include compliance with new or existing regulations, economic conditions that affect electricity demand and the Duke Energy Registrants’ decisions regarding generation technologies deployed to generate the electricity necessary to meet the customer electricity needs.demand.
The Duke Energy Registrants have taken actions that hashave resulted in reduceda reduction of CO2 emissions over time. Actions have included the retirement of 47 coal-fired EGUs with a combined generating capacity of 5,425 MW. Much of that capacity has been replaced with state-of-the-art highly efficient natural gas-fired generation that produces far fewer CO2 emissions per unit of electricity generated. Between 2005 and 2015,2016, the Duke Energy Registrants have collectively lowered the CO2 emissions from their electricity generation in the U.S. by more than 25 percent. These actions will lowerapproximately 30 percent, which lowers the exposure to any future mandatory CO2 emission reduction requirements or carbon tax, whether as a result of federal legislation, or the final CPP regulation.regulation or other as yet unknown emission reduction requirement. Under any future scenario involving mandatory CO2 limitations, the Duke Energy Registrants would plan to seek recovery of their compliance costs through appropriate regulatory mechanisms.

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The Duke Energy Registrants recognize certain groups associate severe weather events with climate change,increasing levels of GHGs in the atmosphere and forecast the possibility these weather events could have a material impact on future results of operations should they occur more frequently and with greater severity. However, the uncertain nature of potential changes ofin extreme weather events (such as increased frequency, duration and severity), the long period of time over which any potential changes might take place and the inability to predict thesepotential changes with any degree of accuracy, make estimating any potential future financial risk to the Duke Energy Registrants’ operations impossible. Currently, theThe Duke Energy Registrants planhave historically planned and prepareprepared for potential extreme weather events, such as ice storms, tornadoes, hurricanes, severe thunderstorms, high winds and droughts.droughts they occasionally experience.

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The Duke Energy Registrants routinely take steps to reduce the potential impact of severe weather events on their electric distribution systems. The Duke Energy Registrants’ electric generating facilities are designed to withstand extreme weather events without significant damage. The Duke Energy Registrants maintain an inventory of coal and oil on-site to mitigate the effects of any potential short-term disruption in fuel supply so they can continue to provide customers with an uninterrupted supply of electricity. The Subsidiary Registrants have programs in place to effectively manage the impact of future droughts on U.S. operations.
Nuclear Matters
Following the events at the Fukushima Daiichi nuclear power station in Japan, Duke Energy conducted thorough inspections at each of its seven nuclear sites during 2011. The initial inspections did not identify any significant vulnerabilities; however, Duke Energy is reviewing designs to evaluate safety margins to external events. Emergency-response capabilities, written procedures and engineering specifications were reviewed to verify each site’s ability to respond in the unlikely event of a beyond design-basis event. Duke Energy is working within the nuclear industry to improve safety standards and margin using the three layers of safety approach used in the U.S.: protection, mitigation and emergency response. Emergency equipment has been added or is in the process of being added at each station to perform key safety functions in the event that backup power sources are lost and are not expected to be restored within a specified period of time. These improvements are in addition to the numerous layers of safety measures and systems previously in place.
In March 2011, the NRC formed a task force to conduct a comprehensive review of processes and regulations to determine whether the agency should make additional improvements to the nuclear regulatory system. On July 13, 2011,Subsequently, the task force proposedNRC targeted a set of improvements designed to ensure protection, enhance accident mitigation, strengthen emergency preparedness and improve efficiency of NRC programs. The recommendations were further prioritized into three tiers based onPursuant to the safety enhancement level. Onfindings of the task force, in March 12, 2012, the NRC issued three regulatory orders requiring safety enhancements related to mitigation strategies to respond to extreme natural events resulting in the loss of power at a plant, ensuring reliable hardened containment vents and enhancing spent fuel pool instrumentation.
On August 30, 2012, the NRC issued implementation guidance to enable power plants to achieve compliance with the orders issued in March 2012. Plants were required to submit implementation plans to the NRC by February 28, 2013, and complete implementation of the safety enhancements within two refueling outages or by December 31, 2016, whichever comes first. Each plant is also required to reassess their seismic and flooding hazards using present-day methods and information, conduct inspections to ensure protection against hazards in the current design basis and re-evaluate emergency communications systems and staffing levels.
Duke Energy is committed to compliance with all safety enhancements ordered by the NRC, in connectionand as of January 2017, Duke Energy actions on two of the three NRC orders are complete. The remaining order is focused only on enhancements to boiling water reactor designs which, for Duke Energy, is unique to Brunswick Steam Electric Plant. Actions associated with thethis third order will be completed by March 12, 2012, regulatory orders noted above, the cost of which could be material. Until such time as the NRC-mandated reassessment of flooding and seismic hazards is complete, the exact scope and cost of compliance modifications to Duke Energy’s sites will not be known.2019. With the NRC’s continuing review of the remaining recommendations,this matter, Duke Energy cannot predict to what extent the NRC will impose additional licensing and safety-related requirements or the costs of complying with such requirements. Upon receipt of additional guidance from the NRC and a collaborative industry review, Duke Energy will be able to determine an implementation plan and associated costs. See Item 1A, “Risk Factors,” for further discussion of applicable risk factors.
New Accounting Standards
See Note 1 to the Consolidated Financial Statements, “Summary of Significant Accounting Policies,” for a discussion of the impact of new accounting standards.
ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
 
See “Management’s Discussion and Analysis of Results of Operations and Financial Condition – Quantitative and Qualitative Disclosures About Market Risk.”

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ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA
 
Duke Energy Corporation (Duke Energy) 
Report of Independent Registered Public Accounting Firm
Consolidated Statements of Operations
Consolidated Statements of Comprehensive Income
Consolidated Balance Sheets
Consolidated Statements of Cash Flows 
Consolidated Statements of Changes in Equity
Duke Energy Carolinas, LLC (Duke Energy Carolinas)
Report of Independent Registered Public Accounting Firm
Consolidated Statements of Operations and Comprehensive Income
Consolidated Balance Sheets
Consolidated Statements of Cash Flows
Consolidated Statements of Changes in Member’s Equity
  
ProgressDuke Energy Inc. (Progress Energy)Carolinas, LLC (Duke Energy Carolinas) 
Report of Independent Registered Public Accounting Firm
Consolidated Statements of Operations and Comprehensive Income
Consolidated Balance Sheets
Consolidated Statements of Cash Flows
Consolidated Statements of Changes in Common Stockholder’sMember’s Equity
  
DukeProgress Energy, Progress, LLC (formerly Duke Energy Progress, Inc.) (Duke Energy Progress) (Progress Energy) 
Report of Independent Registered Public Accounting Firm
Consolidated Statements of Operations and Comprehensive Income
Consolidated Balance Sheets
Consolidated Statements of Cash Flows
Consolidated Statements of Changes in Member's/Common Stockholder’s Equity
  
Duke Energy Florida,Progress, LLC (formerly Duke Energy Florida, Inc.) (Duke Energy Florida)Progress) 
Report of Independent Registered Public Accounting Firm
Consolidated Statements of Operations and Comprehensive Income
Consolidated Balance Sheets
Consolidated Statements of Cash Flows
Consolidated Statements of Changes in Member's/Common Stockholder’s Equity
  
Duke Energy Ohio, Inc.Florida, LLC (Duke Energy Ohio)Florida) 
Report of Independent Registered Public Accounting Firm
Consolidated Statements of Operations and Comprehensive Income
Consolidated Balance Sheets
Consolidated Statements of Cash Flows
Consolidated Statements of Changes in Member's/Common Stockholder’s Equity
  
Duke Energy Indiana,Ohio, Inc. (subsequently Duke Energy Indiana, LLC) (Duke Energy Indiana)Ohio) 
Report of Independent Registered Public Accounting Firm
Consolidated Statements of Operations and Comprehensive Income
Consolidated Balance Sheets
Consolidated Statements of Cash Flows
Consolidated Statements of Changes in Common Stockholder’s Equity
  
Duke Energy Indiana, LLC (Duke Energy Indiana)
Report of Independent Registered Public Accounting Firm
Consolidated Statements of Operations and Comprehensive Income
Consolidated Balance Sheets
Consolidated Statements of Cash Flows
Consolidated Statements of Changes in Common Stockholder’s Equity
  

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Combined Notes to Consolidated Financial Statements 
Note 1 – Summary of Significant Accounting Policies
Note 2 – Acquisitions Dispositions and Sales of Other AssetsDispositions
Note 3 – Business Segments
Note 4 – Regulatory Matters
Note 5 – Commitments and Contingencies
Note 6 – Debt and Credit Facilities
Note 7 – Guarantees and Indemnifications
Note 8 – Joint Ownership of Generating and Transmission Facilities
Note 9 – Asset Retirement Obligations
Note 10 – Property, Plant and Equipment
Note 11 – Goodwill and Intangible Assets
Note 12 – Investments in Unconsolidated Affiliates
Note 13 – Related Party Transactions
Note 14 – Derivatives and Hedging
Note 15 – Investments in Debt and Equity Securities
Note 16 – Fair Value Measurements
Note 17 – Variable Interest Entities
Note 18 – Common Stock
Note 19 – Severance
Note 20 – Stock-Based Compensation
Note 21 – Employee Benefit Plans
Note 22 – Income Taxes
Note 23 – Other Income and Expenses, Net
Note 24 – Subsequent Events
Note 25 – Quarterly Financial Data (Unaudited)

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
To the Board of Directors and Stockholders of
Duke Energy Corporation
Charlotte, North Carolina

We have audited the accompanying consolidated balance sheets of Duke Energy Corporation and subsidiaries (the "Company") as of December 31, 20152016 and 2014,2015, and the related consolidated statements of operations, comprehensive income, changes in equity, and cash flows for each of the three years in the period ended December 31, 2015.2016. We also have audited the Company's internal control over financial reporting as of December 31, 2015,2016, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. The Company's management is responsible for these financial statements, for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Annual Report On Internal Control Over Financial Reporting. Our responsibility is to express an opinion on these financial statements and an opinion on the Company's internal control over financial reporting based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement and whether effective internal control over financial reporting was maintained in all material respects. Our audits of the financial statements included examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

A company's internal control over financial reporting is a process designed by, or under the supervision of, the company's principal executive and principal financial officers, or persons performing similar functions, and effected by the company's board of directors, management, and other personnel to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company's internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company's assets that could have a material effect on the financial statements.

Because of the inherent limitations of internal control over financial reporting, including the possibility of collusion or improper management override of controls, material misstatements due to error or fraud may not be prevented or detected on a timely basis. Also, projections of any evaluation of the effectiveness of the internal control over financial reporting to future periods are subject to the risk that the controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.
In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of Duke Energy Corporation and subsidiaries as of December 31, 20152016 and 2014,2015, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 2015,2016, in conformity with accounting principles generally accepted in the United States of America. Also, in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2015,2016, based on the criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.

As discussed in Note 22 to the consolidated financial statements, Duke Energy Corporation and subsidiaries adopted ASU 2015-17, Income Taxes (Topic 740); Balance Sheet Classification of Deferred Taxes effective December 31, 2015 on a prospective basis.


/s/Deloitte & Touche LLP


Charlotte, North Carolina
February 25, 201624, 2017



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DUKE ENERGY CORPORATION
CONSOLIDATED STATEMENTS OF OPERATIONS
Years Ended December 31,Years Ended December 31,
(in millions, except per share amounts)2015
 2014
 2013
(in millions, except per-share amounts)2016
 2015
 2014
Operating Revenues             
Regulated electric$21,379
 $21,550
 $20,329
$21,221
 $21,379
 $21,550
Nonregulated electric and other1,544
 1,802
 1,916
659
 456
 386
Regulated natural gas536
 573
 511
863
 536
 573
Total operating revenues23,459
 23,925
 22,756
22,743
 22,371
 22,509
Operating Expenses             
Fuel used in electric generation and purchased power – regulated7,308
 7,686
 7,108
Fuel used in electric generation and purchased power – nonregulated354
 533
 540
Fuel used in electric generation and purchased power6,625
 7,355
 7,732
Cost of natural gas195
 248
 224
265
 141
 185
Operation, maintenance and other5,871
 5,856
 5,673
6,085
 5,539
 5,506
Depreciation and amortization3,144
 3,066
 2,668
3,294
 3,053
 2,969
Property and other taxes1,135
 1,213
 1,274
1,142
 1,129
 1,204
Impairment charges120
 81
 399
18
 106
 81
Total operating expenses18,127
 18,683
 17,886
17,429
 17,323
 17,677
Gains (Losses) on Sales of Other Assets and Other, net35
 16
 (16)
Gains on Sales of Other Assets and Other, net27
 30
 10
Operating Income5,367
 5,258
 4,854
5,341
 5,078
 4,842
Other Income and Expenses             
Equity in earnings of unconsolidated affiliates69
 130
 122
Gains on sales of unconsolidated affiliates7
 17
 100
Equity in earnings (losses) of unconsolidated affiliates(15) 69
 130
Other income and expenses, net307
 351
 262
324
 290
 320
Total other income and expenses383
 498
 484
309
 359
 450
Interest Expense1,613
 1,622
 1,543
1,916
 1,527
 1,529
Income From Continuing Operations Before Income Taxes4,137
 4,134
 3,795
3,734
 3,910
 3,763
Income Tax Expense From Continuing Operations1,326
 1,669
 1,205
1,156
 1,256
 1,225
Income From Continuing Operations2,811
 2,465
 2,590
2,578
 2,654
 2,538
Income (Loss) From Discontinued Operations, net of tax20
 (576) 86
(Loss) Income From Discontinued Operations, net of tax(408) 177
 (649)
Net Income2,831
 1,889
 2,676
2,170
 2,831
 1,889
Less: Net Income Attributable to Noncontrolling Interests15
 6
 11
18
 15
 6
Net Income Attributable to Duke Energy Corporation$2,816
 $1,883
 $2,665
$2,152
 $2,816
 $1,883
          
Earnings Per Share Basic and Diluted
             
Income from continuing operations attributable to Duke Energy Corporation common stockholders             
Basic$4.02
 $3.46
 $3.64
$3.71
 $3.80
 $3.58
Diluted$4.02
 $3.46
 $3.63
$3.71
 $3.80
 $3.58
Income (Loss) from discontinued operations attributable to Duke Energy Corporation common stockholders        
(Loss) Income from discontinued operations attributable to Duke Energy Corporation common stockholders
    
Basic$0.03
 $(0.80) $0.13
$(0.60) $0.25
 $(0.92)
Diluted$0.03
 $(0.80) $0.13
$(0.60) $0.25
 $(0.92)
Net Income attributable to Duke Energy Corporation common stockholders        
    
Basic$4.05
 $2.66
 $3.77
$3.11
 $4.05
 $2.66
Diluted$4.05
 $2.66
 $3.76
$3.11
 $4.05
 $2.66
Weighted average shares outstanding             
Basic694
 707
 706
691
 694
 707
Diluted694
 707
 706
691
 694
 707
See Notes to Consolidated Financial Statements

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DUKE ENERGY CORPORATION
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Years Ended December 31,Years Ended December 31,
(in millions)
2015
 2014
 2013
2016
 2015
 2014
Net Income $2,831
 $1,889
 $2,676
$2,170
 $2,831
 $1,889
Other Comprehensive Loss, net of tax      
Other Comprehensive Income (Loss), net of tax      
Foreign currency translation adjustments (264) (124) (197)694
 (264) (124)
Pension and OPEB adjustments(a)
(13) 4
 38
(11) (13) 4
Net unrealized (losses) gains on cash flow hedges(b)

 (26) 59
Net unrealized gains (losses) on cash flow hedges(a)
17
 
 (26)
Reclassification into earnings from cash flow hedges 9
 7
 1
13
 9
 7
Unrealized (losses) gains on available-for-sale securities (6) 3
 (4)
Reclassification into earnings from available-for-sale securities
 
 4
Other Comprehensive Loss, net of tax
(274) (136) (99)
Unrealized gains (losses) on available-for-sale securities2
 (6) 3
Other Comprehensive Income (Loss), net of tax
715
 (274) (136)
Comprehensive Income
2,557
 1,753
 2,577
2,885
 2,557
 1,753
Less: Comprehensive Income Attributable to Noncontrolling Interests
4
 14
 5
20
 4
 14
Comprehensive Income Attributable to Duke Energy Corporation
$2,553
 $1,739
 $2,572
$2,865
 $2,553
 $1,739
(a)Net of insignificant tax expense in 2015, 2014 and $17 million tax expense in 2013. See Note 21 for additional information.
(b)Net of insignificant tax expense in 2015, $13 million tax benefit in 2014 and $20 million tax expense in 2013.
(a)    Net of insignificant tax expense in 2016 and 2015, and $13 million tax benefit in 2014.

See Notes to Consolidated Financial Statements

8287


PART II

DUKE ENERGY CORPORATION
CONSOLIDATED BALANCE SHEETS
December 31,December 31,
(in millions)2015
 2014
2016
 2015
ASSETS        
Current Assets        
Cash and cash equivalents$857
 $2,036
$392
 $383
Receivables (net of allowance for doubtful accounts of $18 at December 31, 2015 and $17 at December 31, 2014)703
 791
Restricted receivables of variable interest entities (net of allowance for doubtful accounts of $53 at December 31, 2015 and $51 at December 31, 2014)1,748
 1,973
Receivables (net of allowance for doubtful accounts of $14 at 2016 and $12 at 2015)751
 515
Receivables of VIEs (net of allowance for doubtful accounts of $54 at 2016 and $53 at 2015)1,893
 1,748
Inventory3,810

3,459
3,522

3,746
Assets held for sale
 364

 746
Regulatory assets877
 1,115
Regulatory assets (includes $50 related to VIEs at 2016)1,023
 877
Other327
 1,837
458
 307
Total current assets8,322
 11,575
8,039
 8,322
Investments and Other Assets        
Investments in equity method unconsolidated affiliates499
 358
925
 499
Nuclear decommissioning trust funds5,825
 5,546
6,205
 5,825
Goodwill16,343
 16,321
19,425
 16,072
Assets held for sale
 2,642

 2,413
Other3,042
 3,008
2,752
 2,830
Total investments and other assets25,709
 27,875
29,307
 27,639
Property, Plant and Equipment        
Cost112,826
 104,861
121,397
 109,967
Accumulated depreciation and amortization(37,665) (34,824)(39,406) (36,736)
Generation facilities to be retired, net548
 9
529
 548
Net property, plant and equipment75,709
 70,046
82,520
 73,779
Regulatory Assets and Deferred Debits        
Regulatory assets11,373
 11,042
Regulatory assets (includes $1,142 related to VIEs at 2016)12,878
 11,373
Other43
 19
17
 43
Total regulatory assets and deferred debits11,416
 11,061
12,895
 11,416
Total Assets$121,156
 $120,557
$132,761
 $121,156
LIABILITIES AND EQUITY        
Current Liabilities        
Accounts payable$2,400
 $2,271
$2,994
 $2,350
Notes payable and commercial paper3,633
 2,514
2,487
 3,633
Taxes accrued348
 569
384
 289
Interest accrued430
 418
503
 412
Current maturities of long-term debt2,074
 2,807
Current maturities of long-term debt (includes $260 at 2016 and $125 at 2015 related to VIEs)2,319
 2,026
Liabilities associated with assets held for sale
 262

 279
Asset retirement obligations411
 
Regulatory liabilities400
 204
409
 400
Other2,115
 2,188
2,044
 2,011
Total current liabilities11,400
 11,233
11,551
 11,400
Long-Term Debt37,495
 37,061
Long-Term Debt (includes $3,587 at 2016 and $2,197 at 2015 related to VIEs)45,576
 36,842
Deferred Credits and Other Liabilities        
Deferred income taxes12,705
 13,423
14,155
 12,548
Investment tax credits472
 427
493
 472
Accrued pension and other post-retirement benefit costs1,088
 1,145
1,111
 1,088
Liabilities associated with assets held for sale
 35

 900
Asset retirement obligations10,264
 8,466
10,200
 10,249
Regulatory liabilities6,255
 6,193
6,881
 6,255
Other1,706
 1,675
1,753
 1,631
Total deferred credits and other liabilities32,490
 31,364
34,593
 33,143
Commitments and Contingencies

 



 

Equity        
Common stock, $0.001 par value, 2 billion shares authorized; 688 million and 707 million shares outstanding at December 31, 2015 and 2014, respectively1
 1
Common stock, $0.001 par value, 2 billion shares authorized; 700 million and 688 million shares outstanding at 2016 and 2015, respectively1
 1
Additional paid-in capital37,968
 39,405
38,741
 37,968
Retained earnings2,564
 2,012
2,384
 2,564
Accumulated other comprehensive loss(806) (543)(93) (806)
Total Duke Energy Corporation stockholders' equity39,727
 40,875
41,033
 39,727
Noncontrolling interests44
 24
8
 44
Total equity39,771
 40,899
41,041
 39,771
Total Liabilities and Equity$121,156
 $120,557
$132,761
 $121,156
See Notes to Consolidated Financial Statements

8388


PART II

DUKE ENERGY CORPORATION
CONSOLIDATED STATEMENTS OF CASH FLOWS
Years Ended December 31,Years Ended December 31,
(in millions)2015
 2014
 2013
2016
 2015
 2014
CASH FLOWS FROM OPERATING ACTIVITIES             
Net income$2,831
 $1,889
 $2,676
$2,170
 $2,831
 $1,889
Adjustments to reconcile net income to net cash provided by operating activities:          
Depreciation, amortization and accretion (including amortization of nuclear fuel)3,613
 3,507
 3,229
3,880
 3,613
 3,507
Equity component of AFUDC(164) (135) (157)(200) (164) (135)
FERC mitigation costs
 (15) 

 
 (15)
Community support and charitable contributions expense
 
 34
Gains on sales of other assets(48) (33) (79)
Accrued charitable contributions related to Piedmont merger commitments93
 
 
Losses (gains) on sales of other assets477
 (48) (33)
Impairment charges153
 915
 400
212
 153
 915
Deferred income taxes1,244
 1,149
 1,264
900
 1,244
 1,149
Equity in earnings of unconsolidated affiliates(69) (130) (122)15
 (69) (130)
Accrued pension and other post-retirement benefit costs71
 108
 307
21
 71
 108
Contributions to qualified pension plans(302) 
 (250)(155) (302) 
Payments for asset retirement obligations(346) (68) (12)(608) (346) (68)
(Increase) decrease in          
Net realized and unrealized mark-to-market and hedging transactions(29) 44
 1
34
 (29) 44
Receivables359
 58
 (281)(391) 359
 58
Inventory(237) (269) (31)272
 (237) (269)
Other current assets(65) (414) (35)(220) (65) (414)
Increase (decrease) in          
Accounts payable(6) (30) 73
266
 (6) (30)
Taxes accrued(38) (14) 77
236
 (38) (14)
Other current liabilities168
 (201) 24
182
 168
 (201)
Other assets(216) 16
 (384)(186) (216) 16
Other liabilities(243) 209
 (352)(200) (243) 209
Net cash provided by operating activities6,676

6,586

6,382
6,798

6,676

6,586
CASH FLOWS FROM INVESTING ACTIVITIES          
Capital expenditures(6,766) (5,384) (5,526)(7,901) (6,766) (5,384)
Investment expenditures(263) (90) (81)(307) (263) (90)
Acquisitions, net of cash acquired(1,334) (54) 
(4,778) (1,334) (54)
Purchases of available-for-sale securities(4,037) (4,110) (6,142)(5,153) (4,037) (4,110)
Proceeds from sales and maturities of available-for-sale securities4,040
 4,133
 6,315
5,236
 4,040
 4,133
Net proceeds from the sale of Midwest generation business and sales of equity investments and other assets2,968
 179
 277
Proceeds from the sales of discontinued operations and other assets, net of cash divested1,418
 2,968
 179
Change in restricted cash191
 9
 167
(4) 191
 9
Other(76) (56) 12
(44) (76) (56)
Net cash used in investing activities(5,277)
(5,373)
(4,978)(11,533)
(5,277)
(5,373)
CASH FLOWS FROM FINANCING ACTIVITIES          
Proceeds from the:          
Issuance of long-term debt2,955
 2,914
 3,601
9,238
 2,955
 2,914
Issuance of common stock related to employee benefit plans17
 25
 9
Payments for the:     
Redemption of long-term debt(3,029) (3,037) (2,761)
Redemption of preferred stock of a subsidiary
 
 (96)
Issuance of common stock731
 17
 25
Payments for the redemption of long-term debt(1,923) (3,029) (3,037)
Proceeds from the issuance of short-term debt with original maturities greater than 90 days379
 1,066
 
2,081
 379
 1,066
Payments for the redemption of short-term debt with original maturities greater than 90 days(931) (564) 
(2,166) (931) (564)
Notes payable and commercial paper1,797
 1,186
 93
(1,362) 1,797
 1,186
Distributions to noncontrolling interests(9) (65) (15)(6) (9) (65)
Contributions from noncontrolling interests
 
 9
Dividends paid(2,254) (2,234) (2,188)(2,332) (2,254) (2,234)
Repurchase of common shares(1,500) 
 

 (1,500) 
Other(3) 31
 21
9
 (3) 31
Net cash used in financing activities(2,578)
(678)
(1,327)
Net (decrease) increase in cash and cash equivalents(1,179)
535

77
Net cash provided by (used in) financing activities4,270

(2,578)
(678)
Changes in cash and cash equivalents included in assets held for sale474
 1,099
 (548)
Net increase (decrease) in cash and cash equivalents9

(80)
(13)
Cash and cash equivalents at beginning of period2,036
 1,501
 1,424
383
 463
 476
Cash and cash equivalents at end of period$857

$2,036

$1,501
$392

$383

$463
Supplemental Disclosures:             
Cash paid for interest, net of amount capitalized$1,607
 $1,659
 $1,665
$1,794
 $1,607
 $1,659
Cash paid for (received from) income taxes170
 158
 (202)
Cash paid for income taxes229
 170
 158
Significant non-cash transactions:          
Accrued capital expenditures771
 664
 594
1,000
 771
 664
See Notes to Consolidated Financial Statements

8489


PART II

DUKE ENERGY CORPORATION
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY
     
   
   
 
Duke Energy Corporation Stockholders'
Accumulated Other Comprehensive Loss
   
   
           
Duke Energy Corporation Stockholders'
Accumulated Other Comprehensive Loss
      
            Net Unrealized
   Total
                Net Unrealized
   Total
    
        Foreign
 Net
 Gains (Losses)
   Duke Energy
            Foreign
 Net
 Gains (Losses)
   Duke Energy
    
Common
   Additional
   Currency
 Losses on
 on Available-
 Pension and
 Corporation
    Common
   Additional
   Currency
 Losses on
 on Available-
 Pension and
 Corporation
    
Stock
 Common
 Paid-in
 Retained
 Translation
 Cash Flow
 for-Sale-
 OPEB
 Stockholders'
 Noncontrolling
 Total
Stock
 Common
 Paid-in
 Retained
 Translation
 Cash Flow
 for-Sale-
 OPEB
 Stockholders'
 Noncontrolling
 Total
(in millions)
Shares
 Stock
 Capital
 Earnings
 Adjustments
 Hedges
 Securities
 Adjustments
 Equity
 Interests
 Equity
Shares
 Stock
 Capital
 Earnings
 Adjustments
 Hedges
 Securities
 Adjustments
 Equity
 Interests
 Equity
Balance at December 31, 2012704
 $1
 $39,279
 $1,889
 $(116) $(100) $
 $(90) $40,863
 $78
 $40,941
Net income
 
 
 2,665
 
 
 
 
 2,665
 11
 2,676
Other comprehensive (loss) income

 
 
 
 (191) 60
 
 38
 (93) (6) (99)
Common stock issuances, including dividend
reinvestment and employee benefits
2
 
 86
 
 
 
 
 
 86
 
 86
Common stock dividends
 
 
 (2,188) 
 
 
 
 (2,188) 
 (2,188)
Premium on the redemption of preferred stock of subsidiaries
 
 
 (3) 
 
 
 
 (3) 
 (3)
Contribution from noncontrolling interest
 
 
 
 
 
 
 
 
 9
 9
Changes in noncontrolling interest in
subsidiaries(a)

 
 
 
 
 
 
 
 
 (14) (14)
Balance at December 31, 2013706

$1

$39,365

$2,363

$(307)
$(40)
$

$(52)
$41,330

$78

$41,408
706
 $1
 $39,365
 $2,363
 $(307) $(40) $
 $(52) $41,330
 $78
 $41,408
Net income
 
 
 1,883
 
 
 
 
 1,883
 6
 1,889

 
 
 1,883
 
 
 
 
 1,883
 6
 1,889
Other comprehensive (loss) income

 
 
 
 (132) (19) 3
 4
 (144) 8
 (136)
 
 
 
 (132) (19) 3
 4
 (144) 8
 (136)
Common stock issuances, including dividend
reinvestment and employee benefits
1
 
 40
 
 
 
 
 
 40
 
 40
1
 
 40
 
 
 
 
 
 40
 
 40
Common stock dividends

 
 
 (2,234) 
 
 
 
 (2,234) 
 (2,234)
 
 
 (2,234) 
 
 
 
 (2,234) 
 (2,234)
Changes in noncontrolling interest in subsidiaries(a)

 
 
 
 
 
 
 
 
 (65) (65)
Other(a)
 
 
 
 
 
 
 
 
 (3) (3)
Distributions to noncontrolling interest in subsidiaries
 
 
 
 
 
 
 
 
 (65) (65)
Other
 
 
 
 
 
 
 
 
 (3) (3)
Balance at December 31, 2014707

$1

$39,405

$2,012

$(439)
$(59)
$3

$(48)
$40,875

$24

$40,899
707

$1

$39,405

$2,012

$(439)
$(59)
$3

$(48)
$40,875

$24

$40,899
Net income

 
 
 2,816
 
 
 
 
 2,816
 15
 2,831

 
 
 2,816
 
 
 
 
 2,816
 15
 2,831
Other comprehensive (loss) income

 
 
 
 (253) 9
 (6) (13) (263) (11) (274)
 
 
 
 (253) 9
 (6) (13) (263) (11) (274)
Common stock issuances, including dividend
reinvestment and employee benefits
1
 
 63
 
 
 
 
 
 63
 
 63
1
 
 63
 
 
 
 
 
 63
 
 63
Stock repurchase(20)   (1,500) 
 
 
 
 
 (1,500) 
 (1,500)(20) 

 (1,500) 
 
 
 
 
 (1,500) 
 (1,500)
Common stock dividends

 
 
 (2,254) 
 
 
 
 (2,254) 
 (2,254)
 
 
 (2,254) 
 
 
 
 (2,254) 
 (2,254)
Distributions to noncontrolling interest in subsidiaries
 
 
 
 
 
 
 
 
 (9) (9)
Other(a)
 
 
 (10) 
 
 
 
 (10) 25
 15
Balance at December 31, 2015688

$1

$37,968

$2,564

$(692)
$(50)
$(3)
$(61)
$39,727

$44

$39,771
Net income
 
 
 2,152
 
 
 
 
 2,152
 18
 2,170
Other comprehensive income (loss)(b)

 
 
 
 692
 30
 2
 (11) 713
 2
 715
Common stock issuances, including dividend reinvestment and employee benefits12
 
 773
 
 
 
 
 
 773
 
 773
Common stock dividends
 
 
 (2,332) 
 
 
 
 (2,332) 
 (2,332)
Distributions to noncontrolling interests in subsidiaries
 
 
 
 
 
 
 
 
 (9) (9)
 
 
 
 
 
 
 
 
 (6) (6)
Other(b)

 
 
 (10) 
 
 
 
 (10) 25
 15
Balance at December 31, 2015688
 $1
 $37,968
 $2,564
 $(692) $(50) $(3) $(61) $39,727
 $44
 $39,771
Other(c)

 
 
 
 
 
 
 
 
 (50) (50)
Balance at December 31, 2016700
 $1
 $38,741
 $2,384
 $
 $(20) $(1) $(72) $41,033
 $8
 $41,041
(a)This decrease primarily relates to cash distributions to noncontrolling interests.
(b)The $25 million change in Noncontrolling Interests amount is primarily related to the acquisitions of a majority interest in a provider of energy management systems and services for commercial customers and a solar company.
(b)Foreign Currency Translation Adjustments amount includes $620 million of cumulative adjustment realized as a result of the sale of the Latin American generation business. Refer to Note 2 to the Consolidated Financial Statements.
(c)Noncontrolling Interests amount is primarily related to the sale of the Latin American generation business. Refer to Note 2 to the Consolidated Financial Statements.
See Notes to Consolidated Financial Statements

8590


PART II

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
To the Board of Directors of
Duke Energy Carolinas, LLC
Charlotte, North Carolina

We have audited the accompanying consolidated balance sheets of Duke Energy Carolinas, LLC and subsidiaries (the "Company") as of December 31, 20152016 and 2014,2015, and the related consolidated statements of operations and comprehensive income, changes in equity, and cash flows for each of the three years in the period ended December 31, 2015.2016. These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Company's internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of Duke Energy Carolinas, LLC and subsidiaries at December 31, 20152016 and 2014,2015, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 2015,2016, in conformity with accounting principles generally accepted in the United States of America.

As discussed in Note 22 to the consolidated financial statements, Duke Energy Carolinas, LLC and subsidiaries adopted ASU 2015-17, Income Taxes (Topic 740); Balance Sheet Classification of Deferred Taxes effective December 31, 2015 on a prospective basis.



/s/Deloitte & Touche LLP

Charlotte, North Carolina
February 25, 201624, 2017


8691


PART II

DUKE ENERGY CAROLINAS, LLC
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME
Years Ended December 31,Years Ended December 31,
(in millions)2015
 2014
 2013
2016
 2015
 2014
Operating Revenues$7,229
 $7,351
 $6,954
$7,322
 $7,229
 $7,351
Operating Expenses                
Fuel used in electric generation and purchased power1,881
 2,133
 1,982
1,797
 1,881
 2,133
Operation, maintenance and other2,066
 1,995
 1,868
2,106
 2,066
 1,995
Depreciation and amortization1,051
 1,009
 921
1,075
 1,051
 1,009
Property and other taxes269
 316
 374
276
 269
 316
Impairment charges1
 3
 
1
 1
 3
Total operating expenses5,268
 5,456
 5,145
5,255
 5,268
 5,456
Losses on Sales of Other Assets and Other, net(1) 
 
Loss on Sales of Other Assets and Other, net(5) (1) 
Operating Income1,960
 1,895
 1,809
2,062
 1,960
 1,895
Other Income and Expenses, net160
 172
 120
162
 160
 172
Interest Expense412
 407
 359
424
 412
 407
Income Before Income Taxes1,708
 1,660
 1,570
1,800
 1,708
 1,660
Income Tax Expense627
 588
 594
634
 627
 588
Net Income$1,081
 $1,072
 $976
$1,166
 $1,081
 $1,072
Other Comprehensive Income, net of tax                
Reclassification into earnings from cash flow hedges1
 2
 1
2
 1
 2
Unrealized gain on available-for-sale securities1
 
 

 1
 
Other Comprehensive Income, net of tax2
 2
 1
2
 2
 2
Comprehensive Income$1,083
 $1,074
 $977
$1,168
 $1,083
 $1,074
See Notes to Consolidated Financial Statements

8792


PART II

DUKE ENERGY CAROLINAS, LLC
CONSOLIDATED BALANCE SHEETS
 December 31, December 31,
(in millions) 2015
 2014
 2016
 2015
ASSETS            
Current Assets            
Cash and cash equivalents $13
 $13
 $14
 $13
Receivables (net of allowance for doubtful accounts of $3 at December 31, 2015 and December 31, 2014) 142
 129
Restricted receivables of variable interest entities (net of allowance for doubtful accounts
of $7 at December 31, 2015 and $6 at December 31, 2014)
 596
 647
Receivables (net of allowance for doubtful accounts of $2 at 2016 and $3 at 2015) 160
 142
Receivables of VIEs (net of allowance for doubtful accounts of $7 at 2016 and 2015) 645
 596
Receivables from affiliated companies 107
 75
 163
 107
Notes receivable from affiliated companies 163
 150
 66
 163
Inventory 1,276

1,124
 1,055

1,276
Regulatory assets 305
 399
 238
 305
Other 128
 77
 37
 128
Total current assets 2,730
 2,614
 2,378
 2,730
Investments and Other Assets            
Nuclear decommissioning trust funds 3,050
 3,042
 3,273
 3,050
Other 999
 959
 940
 999
Total investments and other assets 4,049
 4,001
 4,213
 4,049
Property, Plant and Equipment            
Cost 39,398
 37,372
 41,127
 39,398
Accumulated depreciation and amortization (13,521) (12,700) (14,365) (13,521)
Net property, plant and equipment 25,877
 24,672
 26,762
 25,877
Regulatory Assets and Deferred Debits            
Regulatory assets 2,766
 2,465
 3,159
 2,766
Other 4
 4
 3
 4
Total regulatory assets and deferred debits 2,770
 2,469
 3,162
 2,770
Total Assets $35,426
 $33,756
 $36,515
 $35,426
LIABILITIES AND EQUITY            
Current Liabilities            
Accounts payable $753
 $709
 $833
 $753
Accounts payable to affiliated companies 229
 154
 247
 229
Taxes accrued 25
 146
 143
 25
Interest accrued 95
 95
 102
 95
Current maturities of long-term debt 356
 507
 116
 356
Asset retirement obligations 222
 
Regulatory liabilities 39
 34
 161
 39
Other 519
 434
 468
 519
Total current liabilities 2,016
 2,079
 2,292
 2,016
Long-Term Debt 7,711
 7,546
 9,187
 7,711
Long-Term Debt Payable to Affiliated Companies 300
 300
 300
 300
Deferred Credits and Other Liabilities            
Deferred income taxes 6,146
 5,812
 6,544
 6,146
Investment tax credits 199
 204
 203
 199
Accrued pension and other post-retirement benefit costs 107
 111
 97
 107
Asset retirement obligations 3,918
 3,428
 3,673
 3,918
Regulatory liabilities 2,802
 2,710
 2,840
 2,802
Other 621
 642
 607
 621
Total deferred credits and other liabilities 13,793
 12,907
 13,964
 13,793
Commitments and Contingencies 
 
 
 
Equity            
Member's Equity 11,617
 10,937
Member's equity 10,781
 11,617
Accumulated other comprehensive loss (11) (13) (9) (11)
Total equity 11,606
 10,924
 10,772
 11,606
Total Liabilities and Equity $35,426
 $33,756
 $36,515
 $35,426
See Notes to Consolidated Financial Statements

8893


PART II

DUKE ENERGY CAROLINAS, LLC
CONSOLIDATED STATEMENTS OF CASH FLOWS
Years Ended December 31,Years Ended December 31,
(in millions)2015
 2014
 2013
2016
 2015
 2014
CASH FLOWS FROM OPERATING ACTIVITIES                
Net income$1,081
 $1,072
 $976
$1,166
 $1,081
 $1,072
Adjustments to reconcile net income to net cash provided by operating activities:                
Depreciation and amortization (including amortization of nuclear fuel)1,361
 1,273
 1,167
1,382
 1,361
 1,273
Equity component of AFUDC(96) (91) (91)(102) (96) (91)
FERC mitigation costs
 3
 14

 
 3
Accrued charitable contributions related to Piedmont merger commitments52
 
 
Losses on sales of other assets and other, net1
 
 
5
 1
 
Impairment charges1
 
 
1
 1
 
Deferred income taxes397
 376
 534
470
 397
 376
Accrued pension and other post-retirement benefit costs15
 22
 38
4
 15
 22
Contributions to qualified pension plans(91) 
 
(43) (91) 
Payments for asset retirement obligations(167) 
 
(287) (167) 
(Increase) decrease in                
Net realized and unrealized mark-to-market and hedging transactions
 
 (9)5
 
 
Receivables42
 48
 (12)(76) 42
 48
Receivables from affiliated companies(32) 
 (72)(56) (32) 
Inventory(157) (60) (9)215
 (157) (60)
Other current assets(51) (236) (1)67
 (51) (236)
Increase (decrease) in                
Accounts payable(4) 10
 58
(85) (4) 10
Accounts payable to affiliated companies75
 (7) 33
18
 75
 (7)
Taxes accrued(128) (15) 4
187
 (128) (15)
Other current liabilities127
 (10) (40)63
 127
 (10)
Other assets76
 17
 (102)20
 76
 17
Other liabilities(77) (22) (77)(30) (77) (22)
Net cash provided by operating activities2,373
 2,380
 2,411
2,976
 2,373
 2,380
CASH FLOWS FROM INVESTING ACTIVITIES                
Capital expenditures(1,933) (1,879) (1,695)(2,220) (1,933) (1,879)
Purchases of available-for-sale securities(2,555) (2,064) (2,405)(2,832) (2,555) (2,064)
Proceeds from sales and maturities of available-for-sale securities2,555
 2,044
 2,363
2,832
 2,555
 2,044
Notes receivable from affiliated companies(13) 72
 160
97
 (13) 72
Other(35) (18) (24)(83) (35) (18)
Net cash used in investing activities(1,981) (1,845) (1,601)(2,206) (1,981) (1,845)
CASH FLOWS FROM FINANCING ACTIVITIES                
Proceeds from the issuance of long-term debt516
 
 100
1,587
 516
 
Payments for the redemption of long-term debt(506) (45) (405)(356) (506) (45)
Distributions to parent(401) (500) (499)(2,000) (401) (500)
Other(1) 
 (2)
 (1) 
Net cash used in financing activities(392) (545) (806)(769) (392) (545)
Net (decrease) increase in cash and cash equivalents
 (10) 4
Net increase (decrease) in cash and cash equivalents1
 
 (10)
Cash and cash equivalents at beginning of period13
 23
 19
13
 13
 23
Cash and cash equivalents at end of period$13
 $13
 $23
$14
 $13
 $13
Supplemental Disclosures:                
Cash paid for interest, net of amount capitalized$389
 $388
 $336
$393
 $389
 $388
Cash paid for (received from) income taxes342
 305
 (7)
Cash (received from) paid for income taxes(60) 342
 305
Significant non-cash transactions:                
Accrued capital expenditures239
 194
 199
347
 239
 194
See Notes to Consolidated Financial Statements

8994


PART II

DUKE ENERGY CAROLINAS, LLC
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY
  Accumulated Other    Accumulated Other  
   Comprehensive Loss      Comprehensive Loss   
  Net Losses
 Net Losses
    Net Losses
 Net Losses
  
  on Cash
 Available-
    on Cash
 Available-
  
Member's
 Flow
 for-Sale
 Total
Member's
 Flow
 for-Sale
 Total
(in millions) Equity
 Hedges
 Securities
 Equity
Equity
 Hedges
 Securities
 Equity
Balance at December 31, 2012$9,888
 $(15) $(1) $9,872
Net income 976
 
 
 976
Other comprehensive income    1
 
 1
Distributions to parent (499) 
 
 (499)
Balance at December 31, 2013$10,365
 $(14) $(1) $10,350
$10,365
 $(14) $(1) $10,350
Net income 1,072
 
 
 1,072
1,072
 
 
 1,072
Other comprehensive income    2
 
 2

 2
 
 2
Distributions to parent (500) 
 
 (500)(500) 
 
 (500)
Balance at December 31, 2014$10,937
 $(12) $(1) $10,924
$10,937
 $(12) $(1) $10,924
Net income
1,081
 
 
 1,081
1,081
 
 
 1,081
Other comprehensive income
   1
 1
 2

 1
 1
 2
Distributions to parent
(401) 
 
 (401)(401) 
 
 (401)
Balance at December 31, 2015$11,617
 $(11) $
 $11,606
$11,617
 $(11) $
 $11,606
Net income
1,166
 
 
 1,166
Other comprehensive income

 2
 
 2
Distributions to parent
(2,000) 
 
 (2,000)
Other(2) 
 
 (2)
Balance at December 31, 2016$10,781
 $(9) $
 $10,772
See Notes to Consolidated Financial Statements

9095


PART II

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
To the Board of Directors of
Progress Energy, Inc.
Charlotte, North Carolina
We have audited the accompanying consolidated balance sheets of Progress Energy, Inc. and subsidiaries (the "Company") as of December 31, 20152016 and 2014,2015, and the related consolidated statements of operations and comprehensive income, changes in equity, and cash flows for each of the three years in the period ended December 31, 2015.2016. These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on these financial statements based on our audits.
We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Company's internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.
In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of Progress Energy, Inc. and subsidiaries at December 31, 20152016 and 2014,2015, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 2015,2016, in conformity with accounting principles generally accepted in the United States of America.
As discussed in Note 22 to the consolidated financial statements, Progress Energy Inc. and subsidiaries adopted ASU 2015-17, Income Taxes (Topic 740); Balance Sheet Classification of Deferred Taxes effective December 31, 2015 on a prospective basis.

/s/Deloitte & Touche LLP


Charlotte, North Carolina
February 25, 201624, 2017



9196


PART II

PROGRESS ENERGY, INC.
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME
Years Ended December 31,Years Ended December 31,
(in millions) 2015
 2014
 2013
2016
 2015
 2014
Operating Revenues $10,277
 $10,166
 $9,533
$9,853
 $10,277
 $10,166
Operating Expenses                 
Fuel used in electric generation and purchased power 4,224
 4,195
 3,851
3,644
 4,224
 4,195
Operation, maintenance and other 2,298
 2,335
 2,247
2,386
 2,298
 2,335
Depreciation and amortization 1,116
 1,128
 883
1,213
 1,116
 1,128
Property and other taxes 492
 517
 557
487
 492
 517
Impairment charges 12
 (16) 380
7
 12
 (16)
Total operating expenses8,142

8,159

7,918
7,737

8,142

8,159
Gains on Sales of Other Assets and Other, net 25
 11
 3
25
 25
 11
Operating Income 2,160

2,018

1,618
2,141

2,160

2,018
Other Income and Expenses, net 97
 77
 94
114
 97
 77
Interest Expense 670
 675
 680
689
 670
 675
Income From Continuing Operations Before Income Taxes 1,587

1,420

1,032
1,566

1,587

1,420
Income Tax Expense From Continuing Operations 522
 540
 373
527
 522
 540
Income From Continuing Operations 1,065

880

659
1,039

1,065

880
(Loss) Income From Discontinued Operations, net of tax (3) (6) 16
Income (Loss) From Discontinued Operations, net of tax 2
 (3) (6)
Net Income 1,062

874

675
1,041

1,062

874
Less: Net Income Attributable to Noncontrolling Interests 11
 5
 3
10
 11
 5
Net Income Attributable to Parent $1,051

$869

$672
$1,031

$1,051

$869
          
Net Income
$1,062

$874

$675
$1,041

$1,062

$874
Other Comprehensive (Loss) Income, net of tax
        
Other Comprehensive Income (Loss), net of tax
        
Pension and OPEB adjustments(10) 9
 9
1
 (10) 9
Reclassification into earnings from cash flow hedges4
 8
 (1)8
 4
 8
Unrealized (losses) gains on investments in available-for-sale securities(1) 1
 
Other Comprehensive (Loss) Income, net of tax
(7)
18

8
Unrealized gains (losses) on investments in available-for-sale securities1
 (1) 1
Other Comprehensive Income (Loss), net of tax
10

(7)
18
Comprehensive Income
1,055

892

683
1,051

1,055

892
Less: Comprehensive Income Attributable to Noncontrolling Interests11
 5
 3
10
 11
 5
Comprehensive Income Attributable to Parent$1,044

$887

$680
$1,041

$1,044

$887

See Notes to Consolidated Financial Statements

9297


PART II

PROGRESS ENERGY, INC.
CONSOLIDATED BALANCE SHEETS
December 31,December 31,
(in millions)2015
 2014
2016
 2015
ASSETS          
Current Assets          
Cash and cash equivalents$44
 $42
$46
 $44
Receivables (net of allowance for doubtful accounts of $6 at December 31, 2015 and $8 at December 31, 2014)151
 129
Restricted receivables of variable interest entities (net of allowance for doubtful accounts of $8 at December 31, 2015 and 2014)658
 741
Receivables (net of allowance for doubtful accounts of $6 at 2016 and 2015)114
 151
Receivables of VIEs (net of allowance for doubtful accounts of $7 at 2016 and $8 at 2015)692
 658
Receivables from affiliated companies375
 59
106
 375
Notes receivable from affiliated companies
 220
80
 
Inventory1,751

1,590
1,717

1,751
Regulatory assets362
 491
Regulatory assets (includes $50 related to VIEs at 2016)401
 362
Other156
 1,285
148
 156
Total current assets3,497
 4,557
3,304
 3,497
Investments and Other Assets          
Nuclear decommissioning trust funds2,775
 2,503
2,932
 2,775
Goodwill3,655
 3,655
3,655
 3,655
Other834
 670
852
 834
Total investments and other assets7,264
 6,828
7,439
 7,264
Property, Plant and Equipment          
Cost42,666
 38,650
44,864
 42,666
Accumulated depreciation and amortization(14,867) (13,506)(15,212) (14,867)
Generation facilities to be retired, net548
 
529
 548
Net property, plant and equipment28,347
 25,144
30,181
 28,347
Regulatory Assets and Deferred Debits          
Regulatory assets5,435
 5,408
Regulatory assets (includes $1,142 related to VIEs at 2016)5,722
 5,435
Other5
 5
4
 5
Total regulatory assets and deferred debits5,440
 5,413
5,726
 5,440
Total Assets$44,548
 $41,942
$46,650
 $44,548
LIABILITIES AND EQUITY          
Current Liabilities          
Accounts payable$722
 $847
$1,003
 $722
Accounts payable to affiliated companies311
 203
348
 311
Notes payable to affiliated companies1,308
 835
729
 1,308
Taxes accrued53
 114
83
 53
Interest accrued195
 184
201
 195
Current maturities of long-term debt315
 1,507
Current maturities of long-term debt (includes $62 related to VIEs at 2016)778
 315
Asset retirement obligations189
 
Regulatory liabilities286
 106
189
 286
Other891
 1,021
745
 891
Total current liabilities4,081
 4,817
4,265
 4,081
Long-Term Debt13,999
 13,161
Long-Term Debt (includes $1,741 at 2016 and $479 at 2015 related to VIEs)15,590
 13,999
Long-Term Debt Payable to Affiliated Companies150
 
1,173
 150
Deferred Credits and Other Liabilities          
Deferred income taxes4,790
 4,759
5,246
 4,790
Accrued pension and other post-retirement benefit costs536
 533
547
 536
Asset retirement obligations5,369
 4,711
5,286
 5,369
Regulatory liabilities2,387
 2,379
2,395
 2,387
Other383
 406
341
 383
Total deferred credits and other liabilities13,465
 12,788
13,815
 13,465
Commitments and Contingencies
 

 
Equity          
Common stock, $0.01 par value, 100 shares authorized and outstanding at December 31, 2015 and 2014
 
Common stock, $0.01 par value, 100 shares authorized and outstanding at 2016 and 2015
 
Additional paid-in capital8,092
 7,467
8,094
 8,092
Retained earnings4,831
 3,782
3,764
 4,831
Accumulated other comprehensive loss(48) (41)(38) (48)
Total Progress Energy, Inc. stockholders' equity12,875
 11,208
11,820
 12,875
Noncontrolling interests(22) (32)(13) (22)
Total equity12,853
 11,176
11,807
 12,853
Total Liabilities and Equity$44,548

$41,942
$46,650

$44,548
See Notes to Consolidated Financial Statements

9398


PART II

PROGRESS ENERGY, INC.
CONSOLIDATED STATEMENTS OF CASH FLOWS
Years Ended December 31,Years Ended December 31,
(in millions)2015
 2014
 2013
2016
 2015
 2014
CASH FLOWS FROM OPERATING ACTIVITIES                
Net income$1,062
 $874
 $675
$1,041
 $1,062
 $874
Adjustments to reconcile net income to net cash provided by operating activities:                
Depreciation, amortization and accretion (including amortization of nuclear fuel)1,312
 1,313
 1,041
1,435
 1,312
 1,313
Equity component of AFUDC(54) (26) (50)(76) (54) (26)
FERC mitigation costs
 (18) 

 
 (18)
Community support and charitable contributions expense
 
 20
(Gains) losses on sales of other assets(31) (6) 2
Accrued charitable contributions related to Piedmont merger commitments32
 
 
Gains on sales of other assets and other, net(34) (31) (6)
Impairment charges12
 2
 380
7
 12
 2
Deferred income taxes714
 1,014
 616
532
 714
 1,014
Accrued pension and other post-retirement benefit costs(5) 27
 172
(24) (5) 27
Contributions to qualified pension plans(83) 
 (250)(43) (83) 
Payments for asset retirement obligations(156) (68) (12)(270) (156) (68)
(Increase) decrease in                
Net realized and unrealized mark-to-market and hedging transactions(6) 12
 55
42
 (6) 12
Receivables105
 (31) (148)7
 105
 (31)
Receivables from affiliated companies(316) (56) 11
211
 (316) (56)
Inventory(67) (101) 17
35
 (67) (101)
Other current assets553
 (934) (156)3
 553
 (934)
Increase (decrease) in                
Accounts payable(193) 6
 (81)242
 (193) 6
Accounts payable to affiliated companies108
 80
 93
37
 108
 80
Taxes accrued(63) (20) 22
15
 (63) (20)
Other current liabilities136
 (144) 61
(42) 136
 (144)
Other assets(167) (14) (243)(248) (167) (14)
Other liabilities(112) 56
 (103)(58) (112) 56
Net cash provided by operating activities2,749

1,966

2,122
2,844

2,749

1,966
CASH FLOWS FROM INVESTING ACTIVITIES                
Capital expenditures(2,698) (1,940) (2,490)(3,306) (2,698) (1,940)
Asset acquisition(1,249) 
 
Acquisitions(10) (1,249) 
Purchases of available-for-sale securities(1,174) (1,689) (2,558)(2,143) (1,174) (1,689)
Proceeds from sales and maturities of available-for-sale securities1,211
 1,652
 2,513
2,187
 1,211
 1,652
Proceeds from insurance58
 
 
Proceeds from the sale of nuclear fuel102
 
 
20
 102
 
Notes receivable from affiliated companies220
 (145) (75)(80) 220
 (145)
Change in restricted cash(6) 
 
Other(34) (44) 13
47
 (34) (44)
Net cash used in investing activities(3,622) (2,166) (2,597)(3,233) (3,622) (2,166)
CASH FLOWS FROM FINANCING ACTIVITIES                
Proceeds from the issuance of long-term debt1,186
 1,572
 845
2,375
 1,186
 1,572
Payments for the:        
Redemption of long-term debt(1,553) (931) (1,196)
Redemption of preferred stock of subsidiaries
 
 (96)
Payments for the redemption of long-term debt(327) (1,553) (931)
Notes payable to affiliated companies623
 (378) 758
444
 623
 (378)
Distributions to noncontrolling interests(4) (37) (3)(1) (4) (37)
Capital contribution from parent625
 
 

 625
 
Dividends to parent(2,098) 
 
Other(2) (42) (6)(2) (2) (42)
Net cash provided by financing activities875

184

302
391

875

184
Net increase (decrease) in cash and cash equivalents2

(16)
(173)2

2

(16)
Cash and Cash Equivalents at Beginning of Period42
 58
 231
Cash and Cash Equivalents at End of Period44
 42
 58
Cash and cash equivalents at beginning of period44
 42
 58
Cash and cash equivalents at end of period46
 44
 42
Supplemental Disclosures:                
Cash paid for interest, net of amount capitalized$649
 $664
 $678
$673
 $649
 $664
Cash (received from) paid for income taxes(426) 141
 (167)(187) (426) 141
Significant non-cash transactions:                
Accrued capital expenditures329
 294
 255
317
 329
 294
See Notes to Consolidated Financial Statements

9499


PART II

PROGRESS ENERGY, INC.
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY
  
   
   
 Accumulated Other Comprehensive Loss   
   
   
  
   
   
 Accumulated Other Comprehensive Loss   
   
   
      Net
 Net Unrealized
   Total Progress
          Net
 Net Unrealized
   Total Progress
    
  Additional
   Losses on
 Gains on
 Pension and
 Energy, Inc.
      Additional
   Losses on
 Gains on
 Pension and
 Energy, Inc.
    
Common
 Paid-in
 Retained
 Cash Flow
 Available-for-
 OPEB
 Stockholders'
 Noncontrolling
 Total
Common
 Paid-in
 Retained
 Cash Flow
 Available-for-
 OPEB
 Stockholders'
 Noncontrolling
 Total
(in millions) Stock
 Capital
 Earnings
 Hedges
 Sale Securities
 Adjustments
 Equity
 Interests
 Equity
Stock
 Capital
 Earnings
 Hedges
 Sale Securities
 Adjustments
 Equity
 Interests
 Equity
Balance at December 31, 2012$
 $7,465
 $2,783
 $(42) $
 $(25) $10,181
 $4
 $10,185
Net income
 
 672
 
 
 
 672
 3
 675
Other comprehensive (loss) income
 
 
 (1) 
 9
 8
 
 8
Premium on the redemption of preferred stock of subsidiaries
 
 (3) 
 
 
 (3) 
 (3)
Distributions to noncontrolling interests
 
 
 
 
 
 
 (3) (3)
Other
 2
 
 
 
 
 2
 
 2
Balance at December 31, 2013$

$7,467

$3,452

$(43)
$

$(16)
$10,860

$4

$10,864
$
 $7,467
 $3,452
 $(43) $
 $(16) $10,860
 $4
 $10,864
Net income
 
 869
 
 
 
 869
 5
 874

 
 869
 
 
 
 869
 5
 874
Other comprehensive income
 
 
 8
 1
 9
 18
 
 18

 
 
 8
 1
 9
 18
 
 18
Distributions to noncontrolling interests
 
 
 
 
 
 
 (37) (37)
 
 
 
 
 
 
 (37) (37)
Transfer of service company net assets to Duke Energy
 
 (539) 
 
 
 (539) 
 (539)
 
 (539) 
 
 
 (539) 
 (539)
Other
 
 
 
 
 
 
 (4) (4)
 
 
 
 
 
 
 (4) (4)
Balance at December 31, 2014$

$7,467

$3,782

$(35)
$1

$(7)
$11,208

$(32)
$11,176
$

$7,467

$3,782

$(35)
$1

$(7)
$11,208

$(32)
$11,176
Net income
 
 1,051
 
 
 
 1,051
 11
 1,062

 
 1,051
 
 
 
 1,051
 11
 1,062
Other comprehensive income (loss)
 
 
 4
 (1) (10) (7) 
 (7)
 
 
 4
 (1) (10) (7) 
 (7)
Distributions to noncontrolling interests
 
 
 
 
 
 
 (4) (4)
 
 
 
 
 
 
 (4) (4)
Capital contribution from parent
 625
 
 
 
 
 625
 
 625

 625
 
 
 
 
 625
 
 625
Other
 
 (2) 
 
 
 (2) 3
 1

 
 (2) 
 
 
 (2) 3
 1
Balance at December 31, 2015$

$8,092

$4,831

$(31)
$

$(17)
$12,875

$(22)
$12,853
$

$8,092

$4,831

$(31)
$

$(17)
$12,875

$(22)
$12,853
Net income
 
 1,031
 
 
 
 1,031
 10
 1,041
Other comprehensive income
 
 
 8
 1
 1
 10
 
 10
Distributions to noncontrolling interests
 
 
 
 
 
 
 (1) (1)
Dividends to parent
 
 (2,098) 
 
 
 (2,098) 
 (2,098)
Other
 2
 
 
 
 
 2
 
 2
Balance at December 31, 2016$

$8,094

$3,764

$(23)
$1

$(16)
$11,820

$(13)
$11,807

See Notes to Consolidated Financial Statements

95100


PART II

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
To the Board of Directors of
Duke Energy Progress, LLC
Charlotte, North Carolina

We have audited the accompanying consolidated balance sheets of Duke Energy Progress, LLC and subsidiaries (the "Company") (formerly Duke Energy Progress, Inc. and subsidiaries) as of December 31, 20152016 and 2014,2015, and the related consolidated statements of operations and comprehensive income, changes in equity, and cash flows for each of the three years in the period ended December 31, 2015.2016. These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Company's internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of Duke Energy Progress, LLC and subsidiaries (formerly Duke Energy Progress, Inc.) at December 31, 20152016 and 2014,2015, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 2015,2016, in conformity with accounting principles generally accepted in the United States of America.

As discussed in Note 22 to the consolidated financial statements, Duke Energy Progress, LLC and subsidiaries adopted ASU 2015-17, Income Taxes (Topic 740); Balance Sheet Classification of Deferred Taxes effective December 31, 2015 on a prospective basis.



/s/Deloitte & Touche LLP

Charlotte, North Carolina
February 25, 201624, 2017


96101


PART II

DUKE ENERGY PROGRESS, LLC (formerly DUKE ENERGY PROGRESS, INC.)
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME
Years Ended December 31,Years Ended December 31,
(in millions) 2015
 2014
 2013
2016
 2015
 2014
Operating Revenues $5,290
 $5,176
 $4,992
$5,277
 $5,290
 $5,176
Operating Expenses                 
Fuel used in electric generation and purchased power 2,029
 2,036
 1,925
1,830
 2,029
 2,036
Operation, maintenance and other 1,452
 1,470
 1,357
1,504
 1,452
 1,470
Depreciation and amortization 643
 582
 534
703
 643
 582
Property and other taxes 140
 174
 223
156
 140
 174
Impairment charges 5
 (18) 22
1
 5
 (18)
Total operating expenses4,269
 4,244
 4,061
4,194
 4,269
 4,244
Gains on Sales of Other Assets and Other, net 3
 3
 1
3
 3
 3
Operating Income 1,024
 935
 932
1,086
 1,024
 935
Other Income and Expenses, net 71
 51
 57
71
 71
 51
Interest Expense 235
 234
 201
257
 235
 234
Income Before Income Taxes 860
 752
 788
900
 860
 752
Income Tax Expense 294
 285
 288
301
 294
 285
Net Income and Comprehensive Income$566
 $467
 $500
$599
 $566
 $467
See Notes to Consolidated Financial Statements


97102


PART II

DUKE ENERGY PROGRESS, LLC (formerly DUKE ENERGY PROGRESS, INC.)
CONSOLIDATED BALANCE SHEETS
December 31,December 31,
(in millions)2015
 2014
2016
 2015
ASSETS          
Current Assets          
Cash and cash equivalents$15
 $9
$11
 $15
Receivables (net of allowance for doubtful accounts of $4 at December 31, 2015 and $7 at December 31, 2014)87
 43
Restricted receivables of variable interest entities (net of allowance for doubtful accounts of $5 at December 31, 2015 and December 31, 2014)349
 436
Receivables (net of allowance for doubtful accounts of $4 at 2016 and 2015)51
 87
Receivables of VIEs (net of allowance for doubtful accounts of $5 at 2016 and 2015)404
 349
Receivables from affiliated companies16
 10
5
 16
Notes receivable from affiliated companies
 237
165
 
Inventory1,088

966
1,076

1,088
Regulatory assets264
 287
188
 264
Other121
 384
57
 121
Total current assets1,940
 2,372
1,957
 1,940
Investments and Other Assets          
Nuclear decommissioning trust funds2,035
 1,701
2,217
 2,035
Other486
 412
523
 486
Total investments and other assets2,521
 2,113
2,740
 2,521
Property, Plant and Equipment          
Cost27,313
 24,207
28,419
 27,313
Accumulated depreciation and amortization(10,141) (9,021)(10,561) (10,141)
Generation facilities to be retired, net548
 
529
 548
Net property, plant and equipment17,720
 15,186
18,387
 17,720
Regulatory Assets and Deferred Debits          
Regulatory assets2,710
 2,675
3,243
 2,710
Other3
 3
2
 3
Total regulatory assets and deferred debits2,713
 2,678
3,245
 2,713
Total Assets$24,894
 $22,349
$26,329
 $24,894
LIABILITIES AND EQUITY          
Current Liabilities          
Accounts payable$399
 $481
$589
 $399
Accounts payable to affiliated companies190
 120
227
 190
Notes payable to affiliated companies209
 

 209
Taxes accrued15
 47
104
 15
Interest accrued96
 81
102
 96
Current maturities of long-term debt2
 945
452
 2
Asset retirement obligations189
 
Regulatory liabilities85
 71
158
 85
Other412
 409
365
 412
Total current liabilities1,408
 2,154
2,186
 1,408
Long-Term Debt6,366
 5,225
6,409
 6,366
Long-Term Debt Payable to Affiliated Companies150
 
150
 150
Deferred Credits and Other Liabilities          
Deferred income taxes3,027
 2,908
3,323
 3,027
Investment tax credits132
 79
146
 132
Accrued pension and other post-retirement benefit costs262
 290
252
 262
Asset retirement obligations4,567
 3,905
4,508
 4,567
Regulatory liabilities1,878
 1,832
1,946
 1,878
Other45
 89
51
 45
Total deferred credits and other liabilities9,911
 9,103
10,226
 9,911
Commitments and Contingencies      
Equity          
Member's Equity7,059
 
7,358
 7,059
Common stock, no par; 200 million shares authorized; 160 million shares outstanding at December 31, 2014
 2,159
Retained earnings
 3,708
Total equity7,059
 5,867
Total Liabilities and Equity$24,894
 $22,349
$26,329
 $24,894
See Notes to Consolidated Financial Statements

98103


PART II

DUKE ENERGY PROGRESS, LLC (formerly DUKE ENERGY PROGRESS, INC.)
CONSOLIDATED STATEMENTS OF CASH FLOWS
Years Ended December 31,Years Ended December 31,
(in millions)2015 2014 20132016 2015 2014
CASH FLOWS FROM OPERATING ACTIVITIES                
Net income566
 467
 500
$599
 566
 467
Adjustments to reconcile net income to net cash provided by operating activities:                
Depreciation, amortization and accretion (including amortization of nuclear fuel)821
 761
 685
907
 821
 761
Equity component of AFUDC(47) (25) (42)(50) (47) (25)
FERC mitigation costs
 (18) 

 
 (18)
Community support and charitable contributions expense
 
 20
Accrued charitable contributions related to Piedmont merger commitments32
 
 
Gains on sales of other assets and other, net(7) (3) (1)(6) (7) (3)
Impairment charges5
 
 22
1
 5
 
Deferred income taxes354
 455
 368
384
 354
 455
Accrued pension and other post-retirement benefit costs(14) (7) 72
(32) (14) (7)
Contributions to qualified pension plans(42) 
 (63)(24) (42) 
Payments for asset retirement obligations(109) 
 
(212) (109) 
(Increase) decrease in                
Net realized and unrealized mark-to-market and hedging transactions(3) 13
 (9)4
 (3) 13
Receivables43
 78
 (88)(17) 43
 78
Receivables from affiliated companies(6) (8) 3
11
 (6) (8)
Inventory(50) (65) (26)12
 (50) (65)
Other current assets185
 (416) (39)84
 185
 (416)
Increase (decrease) in                
Accounts payable(65) 27
 (18)171
 (65) 27
Accounts payable to affiliated companies70
 17
 27
37
 70
 17
Taxes accrued(34) 10
 15
90
 (34) 10
Other current liabilities76
 (68) (86)114
 76
 (68)
Other assets(83) 48
 (74)(163) (83) 48
Other liabilities(66) (21) (78)(10) (66) (21)
Net cash provided by operating activities1,594
 1,245
 1,188
1,932
 1,594
 1,245
CASH FLOWS FROM INVESTING ACTIVITIES                
Capital expenditures(1,669) (1,241) (1,567)(1,733) (1,669) (1,241)
Asset acquisition(1,249) 
 

 (1,249) 
Purchases of available-for-sale securities(727) (499) (901)(1,658) (727) (499)
Proceeds from sales and maturities of available-for-sale securities672
 458
 856
1,615
 672
 458
Notes receivable from affiliated companies237
 (237) 
(165) 237
 (237)
Other(30) (12) 4
26
 (30) (12)
Net cash used in investing activities(2,766) (1,531) (1,608)(1,915) (2,766) (1,531)
CASH FLOWS FROM FINANCING ACTIVITIES                
Proceeds from the issuance of long-term debt1,186
 1,347
 845
505
 1,186
 1,347
Payments for the:        
Redemption of long-term debt(991) (379) (451)
Redemption of preferred stock
 
 (62)
Payments for the redemption of long-term debt(15) (991) (379)
Notes payable to affiliated companies359
 (462) 98
(209) 359
 (462)
Capital contribution from parent626
 
 

 626
 
Distributions to parent(300) 
 
Dividends to parent
 (225) 

 
 (225)
Other(2) (7) (7)(2) (2) (7)
Net cash provided by financing activities1,178
 274
 423
Net cash (used in) provided by financing activities(21) 1,178
 274
Net increase (decrease) in cash and cash equivalents6
 (12) 3
(4) 6
 (12)
Cash and Cash Equivalents at Beginning of Period9
 21
 18
Cash and Cash Equivalents at End of Period$15
 $9
 $21
Cash and cash equivalents at beginning of period15
 9
 21
Cash and cash equivalents at end of period$11
 $15
 $9
Supplemental Disclosures:                
Cash paid for interest, net of amount capitalized$218
 $220
 $217
$248
 $218
 $220
Cash (received from) paid for income taxes(197) 81
 (94)(287) (197) 81
Significant non-cash transactions:                
Accrued capital expenditures143
 194
 166
147
 143
 194
See Notes to Consolidated Financial Statements

99104


PART II

DUKE ENERGY PROGRESS, LLC (formerly DUKE ENERGY PROGRESS, INC.)
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY
Common
 Retained
 Member's
 Total
Common
 Retained
 Member's
 Total
(in millions) Stock
 Earnings
 Equity
 Equity
Stock
 Earnings
 Equity
 Equity
Balance at December 31, 2012$2,159
 $2,968
 $
 $5,127
Net income
 500
 
 500
Premium on the redemption of preferred stock
 (2) 
 (2)
Balance at December 31, 2013$2,159
 $3,466
 $
 $5,625
$2,159
 $3,466
 $
 $5,625
Net income
 467
 
 467

 467
 
 467
Dividends to parent
 (225) 
 (225)
 (225) 
 (225)
Balance at December 31, 2014$2,159
 $3,708
 $
 $5,867
$2,159
 $3,708
 $
 $5,867
Net income
 355
 211
 566

 355
 211
 566
Transfer to Member's Equity(2,159) (4,063) 6,222
 
(2,159) (4,063) 6,222
 
Capital contribution from parent
 
 626
 626

 
 626
 626
Balance at December 31, 2015$
 $

$7,059
 $7,059
$
 $
 $7,059
 $7,059
Net income
 
 599
 599
Distribution to Parent
 
 (300) (300)
Balance at December 31, 2016$
 $

$7,358
 $7,358
See Notes to Consolidated Financial Statements

100105


PART II

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
To the Board of Directors of
Duke Energy Florida, LLC
Charlotte, North Carolina
We have audited the accompanying consolidated balance sheets of Duke Energy Florida, LLC and subsidiaries (the "Company") (formerly Duke Energy Florida, Inc. and subsidiaries) as of December 31, 20152016 and 2014,2015, and the related consolidated statements of operations and comprehensive income, changes in equity, and cash flows for each of the three years in the period ended December 31, 2015.2016. These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Company's internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of Duke Energy Florida, LLC and subsidiaries (formerly Duke Energy Florida, Inc.) at December 31, 20152016 and 2014,2015, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 2015,2016, in conformity with accounting principles generally accepted in the United States of America.

As discussed in Note 22 to the consolidated financial statements, Duke Energy Florida, LLC and subsidiaries adopted ASU 2015-17, Income Taxes (Topic 740); Balance Sheet Classification of Deferred Taxes effective December 31, 2015 on a prospective basis.

/s/Deloitte & Touche LLP


Charlotte, North Carolina
February 25, 201624, 2017


101106


PART II

DUKE ENERGY FLORIDA, LLC (formerly DUKE ENERGY FLORIDA, INC.)
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME
Years Ended December 31,Years Ended December 31,
(in millions) 2015
 2014
 2013
2016
 2015
 2014
Operating Revenues $4,977
 $4,975
 $4,527
$4,568
 $4,977
 $4,975
Operating Expenses                 
Fuel used in electric generation and purchased power 2,195
 2,158
 1,927
1,814
 2,195
 2,158
Operation, maintenance and other 835
 850
 898
865
 835
 850
Depreciation and amortization 473
 545
 330
509
 473
 545
Property and other taxes 352
 343
 327
333
 352
 343
Impairment charges 7
 2
 358
6
 7
 2
Total operating expenses3,862
 3,898
 3,840
3,527
 3,862
 3,898
Gains on Sales of Other Assets and Other, net
 1
 1

 
 1
Operating Income 1,115
 1,078
 688
1,041
 1,115
 1,078
Other Income and Expenses, net 24
 20
 30
44
 24
 20
Interest Expense 198
 201
 180
212
 198
 201
Income Before Income Taxes 941
 897
 538
873
 941
 897
Income Tax Expense 342
 349
 213
322
 342
 349
Net Income $599
 $548
 $325
$551
 $599
 $548
Other Comprehensive Income (Loss), net of tax         
Net unrealized loss on cash flow hedges
 
 (1)
Other Comprehensive Income, net of tax         
Net unrealized gain on available-for-sale securities1
 
 
Reclassification into earnings from cash flow hedges
 1
 

 
 1
Other Comprehensive Income (Loss), net of tax
 1
 (1)
Other Comprehensive Income, net of tax 1
 
 1
Comprehensive Income $599
 $549
 $324
$552
 $599
 $549
See Notes to Consolidated Financial Statements

102107


PART II

DUKE ENERGY FLORIDA, LLC (formerly DUKE ENERGY FLORIDA, INC.)
CONSOLIDATED BALANCE SHEETS
December 31,December 31,
(in millions) 2015
 2014
2016
 2015
ASSETS           
Current Assets           
Cash and cash equivalents $8
 $8
$16
 $8
Receivables (net of allowance for doubtful accounts of $2 at December 31, 2015 and 2014) 60
 84
Restricted receivables of variable interest entities (net of allowance for doubtful accounts of $3 at December 31, 2015 and 2014)308
 305
Receivables (net of allowance for doubtful accounts of $2 at 2016 and 2015)61
 60
Receivables of VIEs (net of allowance for doubtful accounts of $2 and 2016 and $3 at 2015)288
 308
Receivables from affiliated companies 84
 40
5
 84
Inventory 663

623
641

663
Regulatory assets 98
 203
Other 21
 521
Regulatory assets (includes $50 related to VIEs at 2016)213
 98
Other (includes $53 related to VIEs at 2016)125
 21
Total current assets 1,242
 1,784
1,349
 1,242
Investments and Other Assets           
Nuclear decommissioning trust funds 740
 803
715
 740
Other 292
 204
276
 292
Total investments and other assets 1,032
 1,007
991
 1,032
Property, Plant and Equipment           
Cost 15,343
 14,433
16,434
 15,343
Accumulated depreciation and amortization (4,720) (4,478)(4,644) (4,720)
Net property, plant and equipment 10,623
 9,955
11,790
 10,623
Regulatory Assets and Deferred Debits           
Regulatory assets 2,725
 2,733
Regulatory assets (includes $1,142 related to VIEs at 2016)2,480
 2,725
Other 2
 2
2
 2
Total regulatory assets and deferred debits 2,727
 2,735
2,482
 2,727
Total Assets $15,624
 $15,481
$16,612
 $15,624
LIABILITIES AND EQUITY           
Current Liabilities           
Accounts payable $322
 $365
$413
 $322
Accounts payable to affiliated companies 116
 70
125
 116
Notes payable to affiliated companies 813
 84
297
 813
Taxes accrued 132
 65
33
 132
Interest accrued 43
 47
49
 43
Current maturities of long-term debt 13
 562
Current maturities of long-term debt (includes $62 related to VIEs at 2016)326
 13
Regulatory liabilities 200
 35
31
 200
Other 452
 586
352
 452
Total current liabilities 2,091
 1,814
1,626
 2,091
Long-Term Debt 4,253
 4,261
Long-Term Debt (includes $1,442 at 2016 and $225 at 2015 related to VIEs)5,799
 4,253
Deferred Credits and Other Liabilities           
Deferred income taxes 2,460
 2,452
2,694
 2,460
Accrued pension and other post-retirement benefit costs 242
 221
262
 242
Asset retirement obligations 802
 806
778
 802
Regulatory liabilities 509
 547
448
 509
Other 146
 158
105
 146
Total deferred credits and other liabilities 4,159
 4,184
4,287
 4,159
Commitments and Contingencies
 
   
Equity           
Member's equity5,121
 
4,899
 5,121
Common Stock, no par; 60 million shares authorized; 100 shares outstanding at December 31, 2014
 1,762
Retained earnings
 3,460
Accumulated other comprehensive income1
 
Total equity 5,121
 5,222
4,900
 5,121
Total Liabilities and Equity $15,624
 $15,481
$16,612
 $15,624
See Notes to Consolidated Financial Statements

103108


PART II

DUKE ENERGY FLORIDA, LLC (formerly DUKE ENERGY FLORIDA, INC.)
CONSOLIDATED STATEMENTS OF CASH FLOWS
Years Ended December 31,Years Ended December 31,
(in millions)2015
 2014
 2013
2016
 2015
 2014
CASH FLOWS FROM OPERATING ACTIVITIES                
Net income$599
 $548
 $325
$551
 $599
 $548
Adjustments to reconcile net income to net cash provided by operating activities:                
Depreciation, amortization and accretion480
 550
 335
516
 480
 550
Equity component of AFUDC(7) 
 (8)(26) (7) 
Gains on sales of other assets and other, net
 (1) (1)
 
 (1)
Impairment charges7
 2
 358
6
 7
 2
Deferred income taxes348
 400
 368
224
 348
 400
Accrued pension and other post-retirement benefit costs5
 29
 79
2
 5
 29
Contributions to qualified pension plans(40) 
 (133)(20) (40) 
Payments for asset retirement obligations(47) (68) (12)(58) (47) (68)
(Increase) decrease in                
Net realized and unrealized mark-to-market and hedging transactions(3) (9) 55
38
 (3) (9)
Receivables61
 (33) (44)23
 61
 (33)
Receivables from affiliated companies(44) (37) 17
21
 (44) (37)
Inventory(17) (36) 42
23
 (17) (36)
Other current assets116
 (269) (109)(133) 116
 (269)
Increase (decrease) in                
Accounts payable(127) 18
 (22)71
 (127) 18
Accounts payable to affiliated companies46
 32
 (6)9
 46
 32
Taxes accrued67
 (31) 18
(117) 67
 (31)
Other current liabilities57
 (80) 159
(149) 57
 (80)
Other assets(84) (59) (154)(84) (84) (59)
Other liabilities(44) 10
 (62)(53) (44) 10
Net cash provided by operating activities1,373
 966
 1,205
844
 1,373
 966
CASH FLOWS FROM INVESTING ACTIVITIES                
Capital expenditures(1,029) (699) (915)(1,573) (1,029) (699)
Acquisitions(10) 
 
Purchases of available-for-sale securities(447) (1,189) (1,656)(485) (447) (1,189)
Proceeds from sales and maturities of available-for-sale securities538
 1,195
 1,658
572
 538
 1,195
Insurance proceeds58
 
 
Proceeds from the sale of nuclear fuel102
 
 
20
 102
 
Notes receivable from affiliated companies
 
 207
Change in restricted cash(6) 
 
Other(3) (31) 
21
 (3) (31)
Net cash used in investing activities(839) (724) (706)(1,403) (839) (724)
CASH FLOWS FROM FINANCING ACTIVITIES                
Proceeds from the issuance of long-term debt
 225
 
1,870
 
 225
Payments for the:        
Redemption of long-term debt(562) (252) (435)
Redemption of preferred stock
 
 (34)
Payments for the redemption of long-term debt(12) (562) (252)
Notes payable to affiliated companies729
 (97) 181
(516) 729
 (97)
Dividends to parent(350) (124) (325)
 (350) (124)
Distribution to parent(350) 
 
(775) (350) 
Other(1) (2) (1)
 (1) (2)
Net cash used in financing activities(534) (250) (614)
Net decrease in cash and cash equivalents
 (8) (115)
Cash and Cash Equivalents at Beginning of Period8
 16
 131
Cash and Cash Equivalents at End of Period$8
 $8
 $16
Net cash provided by (used in) financing activities567
 (534) (250)
Net increase (decrease) in cash and cash equivalents8
 
 (8)
Cash and cash equivalents at beginning of period8
 8
 16
Cash and cash equivalents at end of period$16
 $8
 $8
Supplemental Disclosures:                
Cash paid for interest, net of amount capitalized$205
 $203
 $201
$208
 $205
 $203
Cash (received from) paid for income taxes(229) 59
 (84)
Cash paid for (received from) income taxes216
 (229) 59
Significant non-cash transactions:                
Accrued capital expenditures186
 100
 88
170
 186
 100
See Notes to Consolidated Financial Statements

104109


PART II

DUKE ENERGY FLORIDA, LLC (formerly DUKE ENERGY FLORIDA, INC.)
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY
      Accumulated
  
      Other
        Accumulated Other  
      Comprehensive
        Comprehensive Income  
      Loss
        Net Unrealized
 Net
  
      Net Losses
        Gains on
 Gains on
  
Common
 Retained
 Member's
 on Cash Flow
 Total
Common
 Retained
 Member's
 Available-for-
 Cash Flow
 Total
(in millions) Stock
 Earnings
 Equity
 Hedges
 Equity
Stock
 Earnings
 Equity
 Sale Securities
 Hedges
 Equity
Balance at December 31, 2012$1,762
 $3,037
 $
 $
 $4,799
Net income
 325
 
 
 325
Other comprehensive loss
 
 
 (1) (1)
Dividend to parent
 (325) 
 
 (325)
Premium on the redemption of preferred stock
 (1) 
 
 (1)
Balance at December 31, 2013$1,762
 $3,036
 $
 $(1) $4,797
$1,762
 $3,036
 $
 $
 $(1) $4,797
Net income
 548
   
 548

 548
 
 
 
 548
Other comprehensive income
 
   1
 1

 
 
 
 1
 1
Dividend to parent
 (124)   
 (124)
 (124) 
 
 
 (124)
Balance at December 31, 2014$1,762
 $3,460
 $
 $
 $5,222
$1,762
 $3,460
 $
 $
 $
 $5,222
Net income
 351
 248
 
 599

 351
 248
 
 
 599
Transfer to Member's Equity(1,762) (3,461) 5,223
 
 
 
Dividends to parent
 (350) 
 
 (350)
 (350) 
 
 
 (350)
Distribution to parent
 
 (350) 
 (350)
 
 (350) 
 
 (350)
Transfer to Member's Equity(1,762) (3,461) 5,223
 
 
Balance at December 31, 2015$
 $
 $5,121
 $
 $5,121
$
 $
 $5,121
 $
 $
 $5,121
Net income
 
 551
 
 
 551
Other comprehensive income
 
 
 1
 
 1
Distribution to parent
 
 (775) 
 
 (775)
Other
 
 2
 
 
 2
Balance at December 31, 2016$
 $
 $4,899
 $1
 $
 $4,900
See Notes to Consolidated Financial Statements

105110


PART II

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
To the Board of Directors of
Duke Energy Ohio, Inc.
Charlotte, North Carolina
We have audited the accompanying consolidated balance sheets of Duke Energy Ohio, Inc. and subsidiaries (the "Company") as of December 31, 20152016 and 2014,2015, and the related consolidated statements of operations and comprehensive income, changes in equity, and cash flows for each of the three years in the period ended December 31, 2015.2016. These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Company's internal control over financial reporting.

Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of Duke Energy Ohio, Inc. and subsidiaries at December 31, 2015 and 2014, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 2015, in conformity with accounting principles generally accepted in the United States of America.

As discussed in Note 22 to the consolidated financial statements, Duke Energy Ohio, Inc. and subsidiaries adopted ASU 2015-17, Income Taxes (Topic 740); Balance Sheet Classification of Deferred Taxes effective December 31, 2015 on a prospective basis.


/s/ Deloitte & Touche LLP


Charlotte, North Carolina
February 25, 2016


106


PART II

DUKE ENERGY OHIO, INC.
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME
  Years Ended December 31,
(in millions)   2015
 2014
 2013
Operating Revenues          
Regulated electric  $1,331
 $1,316
 $1,258
Nonregulated electric and other  33
 19
 34
Regulated natural gas  541
 578
 513
Total operating revenues  1,905
 1,913
 1,805
Operating Expenses  
        
Fuel used in electric generation and purchased power – regulated  446
 459
 428
Fuel used in electric generation and purchased power – nonregulated  47
 25
 41
Cost of natural gas   141
 185
 152
Operation, maintenance and other  495
 516
 546
Depreciation and amortization  227
 214
 213
Property and other taxes  254
 234
 242
Impairment charges  
 94
 5
Total operating expenses  1,610
 1,727
 1,627
Gains on Sales of Other Assets and Other, net  8
 1
 4
Operating Income  303
 187
 182
Other Income and Expenses, net  6
 10
 2
Interest Expense  79
 86
 74
Income From Continuing Operations Before Income Taxes230
 111
 110
Income Tax Expense From Continuing Operations81
 43
 43
Income From Continuing Operations149
 68
 67
Income (Loss) From Discontinued Operations, net of tax23
 (563) 35
Net Income (Loss)$172
 $(495) $102
Other Comprehensive Income, net of tax       
Pension and OPEB adjustments
 
 1
Comprehensive Income (Loss)$172
 $(495) $103
See Notes to Consolidated Financial Statements

107


PART II

DUKE ENERGY OHIO, INC.
CONSOLIDATED BALANCE SHEETS
  December 31,
(in millions)2015
 2014
ASSETS     
Current Assets     
Cash and cash equivalents$14
 $20
Receivables (net of allowance for doubtful accounts of $2 at December 31, 2015 and December 31, 2014)66
 93
Receivables from affiliated companies84
 107
Notes receivable from affiliated companies
 145
Inventory105

97
Assets held for sale
 316
Regulatory assets36
 49
Other110
 167
Total current assets415
 994
Investments and Other Assets     
Goodwill920
 920
Assets held for sale
 2,605
Other20
 23
Total investments and other assets940
 3,548
Property, Plant and Equipment     
Cost7,750
 7,141
Accumulated depreciation and amortization(2,507) (2,213)
Generation facilities to be retired, net
 9
Net property, plant and equipment5,243
 4,937
Regulatory Assets and Deferred Debits     
Regulatory assets497
 512
Other2
 2
Total regulatory assets and deferred debits499
 514
Total Assets$7,097
 $9,993
LIABILITIES AND EQUITY     
Current Liabilities     
Accounts payable$207
 $209
Accounts payable to affiliated companies53
 74
Notes payable to affiliated companies103
 491
Taxes accrued171
 163
Interest accrued18
 19
Current maturities of long-term debt106
 157
Liabilities associated with assets held for sale
 246
Regulatory liabilities12
 10
Other153
 66
Total current liabilities823
 1,435
Long-Term Debt1,467
 1,578
Long-Term Debt Payable to Affiliated Companies25
 25
Deferred Credits and Other Liabilities     
Deferred income taxes1,407
 1,765
Accrued pension and other post-retirement benefit costs56
 48
Liabilities associated with assets held for sale
 34
Asset retirement obligations125
 27
Regulatory liabilities245
 241
Other165
 166
Total deferred credits and other liabilities1,998
 2,281
Commitments and Contingencies   
Equity     
Common stock, $8.50 par value, 120,000,000 shares authorized; 89,663,086 shares outstanding at December 31, 2015 and 2014762
 762
Additional paid-in capital2,720
 4,782
Accumulated deficit(698) (870)
Total equity2,784
 4,674
Total Liabilities and Equity$7,097
 $9,993
See Notes to Consolidated Financial Statements


108


PART II

DUKE ENERGY OHIO, INC.
CONSOLIDATED STATEMENTS OF CASH FLOWS
  Years Ended December 31,
(in millions)2015
 2014
 2013
CASH FLOWS FROM OPERATING ACTIVITIES        
Net income (loss)$172
 $(495) $102
Adjustments to reconcile net income (loss) to net cash provided by operating activities:        
Depreciation, amortization and accretion230
 258
 357
Equity component of AFUDC(3) (4) (1)
Gains on sales of other assets and other, net(8) (1) (5)
Impairment charges40
 941
 5
Deferred income taxes206
 (219) 98
Accrued pension and other post-retirement benefit costs9
 8
 17
Contributions to qualified pension plans(8) 
 
Payments for asset retirement obligations(4) 
 
(Increase) decrease in        
Net realized and unrealized mark-to-market and hedging transactions(10) 27
 17
Receivables23
 (56) (15)
Receivables from affiliated companies23
 14
 (39)
Inventory
 8
 (3)
Other current assets
 (5) (1)
Increase (decrease) in        
Accounts payable(1) 27
 13
Accounts payable to affiliated companies(21) (3) 15
Taxes accrued(21) (9) 1
Other current liabilities88
 27
 14
Other assets25
 (4) (6)
Other liabilities(73) (33) (73)
Net cash provided by operating activities667
 481
 496
CASH FLOWS FROM INVESTING ACTIVITIES        
Capital expenditures(399) (322) (434)
Net proceeds from the sales of other assets
 
 11
Notes receivable from affiliated companies145
 (88) (56)
Other(15) (12) 1
Net cash used in investing activities(269) (422) (478)
CASH FLOWS FROM FINANCING ACTIVITIES        
Proceeds from the issuance of long-term debt
 
 450
Payments for the redemption of long-term debt(157) (449) (258)
Notes payable to affiliated companies(95) 473
 (202)
Dividends to parent(150) (100) 
Other(2) 1
 (3)
Net cash used in financing activities(404) (75) (13)
Net (decrease) increase in cash and cash equivalents(6) (16) 5
Cash and cash equivalents at beginning of period20
 36
 31
Cash and cash equivalents at end of period14
 20
 36
Supplemental Disclosures:        
Cash paid for interest, net of amount capitalized$76
 $76
 $71
Cash paid for (received from) income taxes410
 (5) 9
Significant non-cash transactions:        
Accrued capital expenditures20
 24
 27
Distribution of membership interest of Duke Energy SAM, LLC to parent1,912
 
 
See Notes to Consolidated Financial Statements

109


PART II

DUKE ENERGY OHIO, INC.
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY
       Accumulated
  
       Other
  
       Comprehensive
  
           Loss
   
   Additional
   Pension and
  
 Common
 Paid-in
 Accumulated
 OPEB Related
 Total
(in millions)  Stock
 Capital
 Deficit
 Adjustments
 Equity
Balance at December 31, 2012$762
 $4,882
 $(477) $(1) $5,166
Net income  
 
 102
 
 102
Other comprehensive income  
 
 
 1
 1
Balance at December 31, 2013$762
 $4,882
 $(375) $
 $5,269
Net loss
 
 (495) 
 (495)
Dividends to parent
 (100) 
 
 (100)
Balance at December 31, 2014$762
 $4,782
 $(870) $
 $4,674
Net income
 
 172
 
 172
Dividends to parent
 (150) 
 
 (150)
Distribution of membership interest of Duke Energy SAM, LLC to parent
 (1,912) 
 
 (1,912)
Balance at December 31, 2015$762
 $2,720
 $(698) 
 $2,784
See Notes to Consolidated Financial Statements

110


PART II

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
To the Board of Directors of
Duke Energy Indiana, LLC
Charlotte, North Carolina
We have audited the accompanying consolidated balance sheets of Duke Energy Indiana, Inc. and subsidiary (the "Company") (subsequently Duke Energy Indiana, LLC and subsidiary effective as of January 1, 2016) as of December 31, 2015 and 2014, and the related consolidated statements of operations and comprehensive income, changes in equity, and cash flows for each of the three years in the period ended December 31, 2015. These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Company's internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.
In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of Duke Energy Ohio, Inc. and subsidiaries at December 31, 2016 and 2015, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 2016, in conformity with accounting principles generally accepted in the United States of America.

/s/Deloitte & Touche LLP
Charlotte, North Carolina
February 24, 2017

111


PART II

DUKE ENERGY OHIO, INC.
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME
  Years Ended December 31,
(in millions)   2016
 2015
 2014
Operating Revenues          
Regulated electric  $1,410
 $1,331
 $1,316
Nonregulated electric and other  31
 33
 19
Regulated natural gas  503
 541
 578
Total operating revenues  1,944
 1,905
 1,913
Operating Expenses  
        
Fuel used in electric generation and purchased power – regulated  442
 446
 459
Fuel used in electric generation and purchased power – nonregulated  51
 47
 25
Cost of natural gas   103
 141
 185
Operation, maintenance and other  512
 495
 516
Depreciation and amortization  233
 227
 214
Property and other taxes  258
 254
 234
Impairment charges  
 
 94
Total operating expenses  1,599
 1,610
 1,727
Gains on Sales of Other Assets and Other, net  2
 8
 1
Operating Income  347
 303
 187
Other Income and Expenses, net  9
 6
 10
Interest Expense  86
 79
 86
Income From Continuing Operations Before Income Taxes270
 230
 111
Income Tax Expense From Continuing Operations78
 81
 43
Income From Continuing Operations192
 149
 68
Income (Loss) From Discontinued Operations, net of tax36
 23
 (563)
Net Income (Loss) and Comprehensive Income (Loss)$228
 $172
 $(495)
See Notes to Consolidated Financial Statements

112


PART II

DUKE ENERGY OHIO, INC.
CONSOLIDATED BALANCE SHEETS
  December 31,
(in millions)2016
 2015
ASSETS     
Current Assets     
Cash and cash equivalents$13
 $14
Receivables (net of allowance for doubtful accounts of $2 at 2016 and 2015)71
 66
Receivables from affiliated companies129
 84
Notes receivable from affiliated companies94
 
Inventory137

105
Regulatory assets37
 36
Other37
 110
Total current assets518
 415
Investments and Other Assets     
Goodwill920
 920
Other21
 20
Total investments and other assets941
 940
Property, Plant and Equipment     
Cost8,126
 7,750
Accumulated depreciation and amortization(2,579) (2,507)
Net property, plant and equipment5,547
 5,243
Regulatory Assets and Deferred Debits     
Regulatory assets520
 497
Other2
 2
Total regulatory assets and deferred debits522
 499
Total Assets$7,528
 $7,097
LIABILITIES AND EQUITY     
Current Liabilities     
Accounts payable$282
 $207
Accounts payable to affiliated companies63
 53
Notes payable to affiliated companies16
 103
Taxes accrued178
 171
Interest accrued19
 18
Current maturities of long-term debt1
 106
Regulatory liabilities21
 12
Other91
 153
Total current liabilities671
 823
Long-Term Debt1,858
 1,467
Long-Term Debt Payable to Affiliated Companies25
 25
Deferred Credits and Other Liabilities     
Deferred income taxes1,443
 1,407
Accrued pension and other post-retirement benefit costs56
 56
Asset retirement obligations77
 125
Regulatory liabilities236
 245
Other166
 165
Total deferred credits and other liabilities1,978
 1,998
Commitments and Contingencies   
Equity     
Common stock, $8.50 par value, 120,000,000 shares authorized; 89,663,086 shares outstanding at 2016 and 2015762
 762
Additional paid-in capital2,695
 2,720
Accumulated deficit(461) (698)
Total equity2,996
 2,784
Total Liabilities and Equity$7,528
 $7,097
See Notes to Consolidated Financial Statements

113


PART II

DUKE ENERGY OHIO, INC.
CONSOLIDATED STATEMENTS OF CASH FLOWS
  Years Ended December 31,
(in millions)2016
 2015
 2014
CASH FLOWS FROM OPERATING ACTIVITIES        
Net income (loss)$228
 $172
 $(495)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:        
Depreciation, amortization and accretion237
 230
 258
Equity component of AFUDC(6) (3) (4)
Gains on sales of other assets and other, net(2) (8) (1)
Impairment charges
 40
 941
Deferred income taxes55
 206
 (219)
Accrued pension and other post-retirement benefit costs6
 9
 8
Contributions to qualified pension plans(5) (8) 
Payments for asset retirement obligations(5) (4) 
(Increase) decrease in        
Net realized and unrealized mark-to-market and hedging transactions(2) (10) 27
Receivables(4) 23
 (56)
Receivables from affiliated companies(36) 23
 14
Inventory(32) 
 8
Other current assets79
 
 (5)
Increase (decrease) in        
Accounts payable19
 (1) 27
Accounts payable to affiliated companies10
 (21) (3)
Taxes accrued3
 (21) (9)
Other current liabilities(54) 88
 27
Other assets(35) 25
 (4)
Other liabilities(31) (73) (33)
Net cash provided by operating activities425
 667
 481
CASH FLOWS FROM INVESTING ACTIVITIES        
Capital expenditures(476) (399) (322)
Notes receivable from affiliated companies(94) 145
 (88)
Other(30) (15) (12)
Net cash used in investing activities(600) (269) (422)
CASH FLOWS FROM FINANCING ACTIVITIES        
Proceeds from the issuance of long-term debt341
 
 
Payments for the redemption of long-term debt(53) (157) (449)
Notes payable to affiliated companies(87) (95) 473
Dividends to parent(25) (150) (100)
Other(2) (2) 1
Net cash provided by (used in) financing activities174
 (404) (75)
Net decrease in cash and cash equivalents(1) (6) (16)
Cash and cash equivalents at beginning of period14
 20
 36
Cash and cash equivalents at end of period13
 14
 20
Supplemental Disclosures:        
Cash paid for interest, net of amount capitalized$81
 $76
 $76
Cash (received from) paid for income taxes(46) 410
 (5)
Significant non-cash transactions:        
Accrued capital expenditures83
 20
 24
Distribution of membership interest of Duke Energy SAM, LLC to parent
 1,912
 
See Notes to Consolidated Financial Statements

114


PART II

DUKE ENERGY OHIO, INC.
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY
        
        
        
             
   Additional
    
 Common
 Paid-in
 Accumulated
 Total
(in millions)  Stock
 Capital
 Deficit
 Equity
Balance at December 31, 2013$762
 $4,882
 $(375) $5,269
Net loss
 
 (495) (495)
Dividends to parent  
 (100) 
 (100)
Balance at December 31, 2014$762
 $4,782
 $(870) $4,674
Net income
 
 172
 172
Dividends to parent
 (150) 
 (150)
Distribution of membership interest of Duke Energy SAM, LLC to parent
 (1,912) 
 (1,912)
Balance at December 31, 2015$762

$2,720

$(698)
$2,784
Net income
 
 228
 228
Contribution from parent
 
 9
 9
Dividends to parent
 (25) 
 (25)
Balance at December 31, 2016$762
 $2,695
 $(461) $2,996
See Notes to Consolidated Financial Statements

115


PART II

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
To the Board of Directors of
Duke Energy Indiana, LLC
Charlotte, North Carolina
We have audited the accompanying consolidated balance sheets of Duke Energy Indiana, LLC and subsidiary (the "Company") as of December 31, 2016 and 2015, and the related consolidated statements of operations and comprehensive income, changes in equity, and cash flows for each of the three years in the period ended December 31, 2016. These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on these financial statements based on our audits.
We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Company's internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.
In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of Duke Energy Indiana, Inc.LLC and subsidiary at December 31, 20152016 and 2014,2015, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 2015,2016, in conformity with accounting principles generally accepted in the United States of America.

As discussed in Note 22 to the consolidated financial statements, Duke Energy Indiana, Inc. and subsidiary adopted ASU 2015-17, Income Taxes (Topic 740); Balance Sheet Classification of Deferred Taxes effective December 31, 2015 on a prospective basis.

/s/Deloitte & Touche LLP


Charlotte, North Carolina
February 25, 201624, 2017



111116


PART II

DUKE ENERGY INDIANA, INC. (subsequently DUKE ENERGY INDIANA, LLC)LLC
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME
Years Ended December 31,Years Ended December 31,
(in millions)2015
 2014
 2013
2016
 2015
 2014
Operating Revenues$2,890
 $3,175
 $2,926
$2,958
 $2,890
 $3,175
Operating Expenses                
Fuel used in electric generation and purchased power982
 1,259
 1,131
909
 982
 1,259
Operation, maintenance and other682
 670
 649
723
 682
 670
Depreciation and amortization434
 413
 342
496
 434
 413
Property and other taxes61
 128
 71
58
 61
 128
Impairment charges88
 
 
8
 88
 
Total operating expenses2,247
 2,470
 2,193
2,194
 2,247
 2,470
Gains on Sales of Other Assets and Other, net1
 
 
1
 1
 
Operating Income644
 705
 733
765
 644
 705
Other Income and Expenses, net11
 22
 18
22
 11
 22
Interest Expense176
 171
 170
181
 176
 171
Income Before Income Taxes479

556

581
606

479

556
Income Tax Expense163
 197
 223
225
 163
 197
Net Income$316

$359

$358
$381

$316

$359
Other Comprehensive Loss, net of tax                
Reclassification into earnings from cash flow hedges(2) 
 (2)(1) (2) 
Comprehensive Income$314

$359

$356
$380

$314

$359
See Notes to Consolidated Financial Statements

112117


PART II

DUKE ENERGY INDIANA, INC. (subsequently DUKE ENERGY INDIANA, LLC)LLC
CONSOLIDATED BALANCE SHEETS
December 31,December 31,
(in millions)2015
 2014
2016
 2015
ASSETS          
Current Assets          
Cash and cash equivalents$9
 $6
$17
 $9
Receivables (net of allowance for doubtful accounts of $1 at December 31, 2015 and December 31, 2014)96
 87
Receivables (net of allowance for doubtful accounts of $1 at 2016 and 2015)105
 96
Receivables from affiliated companies71
 115
114
 71
Notes receivable from affiliated companies83
 
86
 83
Inventory570

537
504

570
Regulatory assets102
 93
149
 102
Other15
 326
45
 15
Total current assets946
 1,164
1,020
 946
Investments and Other Assets212
 251
145
 212
Property, Plant and Equipment          
Cost14,007
 13,034
14,241
 14,007
Accumulated depreciation and amortization(4,484) (4,219)(4,317) (4,484)
Net property, plant and equipment9,523
 8,815
9,924
 9,523
Regulatory Assets and Deferred Debits          
Regulatory assets716
 685
1,073
 716
Other2
 2
2
 2
Total regulatory assets and deferred debits718
 687
1,075
 718
Total Assets$11,399
 $10,917
$12,164
 $11,399
LIABILITIES AND EQUITY          
Current Liabilities          
Accounts payable$189
 $179
$263
 $189
Accounts payable to affiliated companies83
 58
74
 83
Notes payable to affiliated companies
 71
Taxes accrued89
 54
31
 89
Interest accrued56
 56
61
 56
Current maturities of long-term debt547
 5
3
 547
Regulatory liabilities62
 54
40
 62
Other97
 98
93
 97
Total current liabilities1,123
 575
565
 1,123
Long-Term Debt3,071
 3,614
3,633
 3,071
Long-Term Debt Payable to Affiliated Companies150
 150
150
 150
Deferred Credits and Other Liabilities          
Deferred income taxes1,657
 1,591
1,900
 1,657
Investment tax credits138
 139
137
 138
Accrued pension and other post-retirement benefit costs80
 82
71
 80
Asset retirement obligations525
 32
866
 525
Regulatory liabilities754
 796
748
 754
Other65
 90
27
 65
Total deferred credits and other liabilities3,219
 2,730
3,749
 3,219
Commitments and Contingencies
 
   
Equity          
Common Stock, no par; $0.01 stated value, 60,000,000 shares authorized; 53,913,701 shares outstanding at December 31, 2015 and December 31, 20141
 1
Member's equity4,067
 
Common Stock, no par; $0.01 stated value, 60,000,000 shares authorized; 53,913,701 shares outstanding at 2015
 1
Additional paid-in capital1,384
 1,384

 1,384
Retained earnings2,450
 2,460

 2,450
Accumulated other comprehensive income1
 3

 1
Total equity3,836
 3,848
4,067
 3,836
Total Liabilities and Equity$11,399
 $10,917
$12,164
 $11,399
See Notes to Consolidated Financial Statements

113118


PART II

DUKE ENERGY INDIANA, INC. (subsequently DUKE ENERGY INDIANA, LLC)LLC
CONSOLIDATED STATEMENTS OF CASH FLOWS
Years Ended December 31,Years Ended December 31,
(in millions)2015
 2014
 2013
2016
 2015
 2014
CASH FLOWS FROM OPERATING ACTIVITIES                
Net income$316
 $359
 $358
$381
 $316
 $359
Adjustments to reconcile net income to net cash provided by operating activities:                
Depreciation and amortization439
 416
 346
499
 439
 416
Equity component of AFUDC(11) (14) (15)(16) (11) (14)
Gains on sales of other assets and other, net(1) 
 

 (1) 
Impairment charges88
 
 
8
 88
 
Deferred income taxes262
 308
 304
213
 262
 308
Accrued pension and other post-retirement benefit costs13
 16
 25
8
 13
 16
Contributions to qualified pension plans(19) 
 
(9) (19) 
Payments for asset retirement obligations(19) 
 
(46) (19) 
(Increase) decrease in                
Net realized and unrealized mark-to-market and hedging transactions
 
 (30)
Receivables(7) (35) 3
(2) (7) (35)
Receivables from affiliated companies44
 36
 (47)(43) 44
 36
Inventory(21) (103) (53)66
 (21) (103)
Other current assets90
 (8) (40)(67) 90
 (8)
Increase (decrease) in                
Accounts payable33
 (41) 32
8
 33
 (41)
Accounts payable to affiliated companies25
 2
 (4)(9) 25
 2
Taxes accrued35
 (32) (30)(4) 35
 (32)
Other current liabilities26
 5
 (5)(81) 26
 5
Other assets(82) (21) (16)(27) (82) (21)
Other liabilities(35) 17
 (84)(8) (35) 17
Net cash provided by operating activities1,176
 905
 744
871
 1,176
 905
CASH FLOWS FROM INVESTING ACTIVITIES                
Capital expenditures(690) (625) (545)(755) (690) (625)
Purchases of available-for-sale securities(9) (20) (11)(14) (9) (20)
Proceeds from sales and maturities of available-for-sale securities11
 16
 7
11
 11
 16
Proceeds from the sales of other assets17
 
 

 17
 
Notes receivable from affiliated companies(83) 96
 (96)(3) (83) 96
Other(17) 4
 (3)32
 (17) 4
Net cash used in investing activities(771) (529) (648)(729) (771) (529)
CASH FLOWS FROM FINANCING ACTIVITIES                
Proceeds from the issuance of long-term debt
 
 498
494
 
 
Payments for the redemption of long-term debt(5) (5) (405)(478) (5) (5)
Notes payable to affiliated companies(71) 71
 (81)
 (71) 71
Dividends to parent(326) (450) (125)
 (326) (450)
Distributions to parent(149) 
 
Other
 (1) (4)(1) 
 (1)
Net cash used in financing activities(402) (385) (117)(134) (402) (385)
Net increase (decrease) in cash and cash equivalents3
 (9) (21)8
 3
 (9)
Cash and cash equivalents at beginning of period6
 15
 36
9
 6
 15
Cash and cash equivalents at end of period$9
 $6
 $15
$17
 $9
 $6
Supplemental Disclosures:                
Cash paid for interest, net of amount capitalized$175
 $169
 $194
$171
 $175
 $169
Cash (received from) paid for income taxes(253) (61) 46
Cash received from income taxes(7) (253) (61)
Significant non-cash transactions:          
Accrued capital expenditures64
 87
 73
99
 64
 87
See Notes to Consolidated Financial Statements

114119


PART II

DUKE ENERGY INDIANA, INC. (subsequently DUKE ENERGY INDIANA, LLC)LLC
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY
           Accumulated   
         Accumulated Other
           Other  
      Comprehensive
          Comprehensive  
      Income
          Income  
  Additional
   Net Gains
    Additional
     Net Gains on
  
Common
 Paid-in
 Retained
 on Cash
 Total
Common
 Paid-in
 Retained
 Member's
 Cash Flow
 Total
(in millions) Stock
 Capital
 Earnings
 Flow Hedges
 Equity
Stock
 Capital
 Earnings
 Equity
 Hedges
 Equity
Balance at December 31, 2012$1
 $1,384
 $2,318
 $5
 $3,708
Net income
 
 358
 
 358
Other comprehensive loss
 
 
 (2) (2)
Dividend to parent
 
 (125) 
 (125)
Balance at December 31, 2013$1

$1,384

$2,551

$3

$3,939
$1
 $1,384
 $2,551
 $
 $3
 $3,939
Net income
 
 359
 
 359

 
 359
 
 
 359
Dividend to parent
 
 (450) 
 (450)
Dividends to parent
 
 (450) 
 
 (450)
Balance at December 31, 2014$1

$1,384

$2,460

$3

$3,848
$1

$1,384

$2,460

$
 $3

$3,848
Net income
 
 316
 
 316

 
 316
 
 
 316
Other comprehensive loss
 
 
 (2) (2)
 
 
 
 (2) (2)
Dividends to parent
 
 (326) 
 (326)
 
 (326) 
 
 (326)
Balance at December 31, 2015$1

$1,384

$2,450

$1

$3,836
$1

$1,384

$2,450

$
 $1

$3,836
Net income
 
 
 381
 
 381
Other comprehensive loss
 
 
 
 (1) (1)
Distributions to parent
 
 
 (149) 
 (149)
Transfer to Member's Equity(1) (1,384) (2,450) 3,835
 
 
Balance at December 31, 2016$

$

$

$4,067
 $

$4,067
See Notes to Consolidated Financial Statements 

115120


PART II
DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, INC.LLC – DUKE ENERGY FLORIDA, INC.LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements
For the Years Ended December 31, 2016, 2015 2014 and 20132014

Index to Combined Notes To Consolidated Financial Statements
The notes to the consolidated financial statements are a combined presentation. The following listtable indicates the registrants to which the notes apply.
  Applicable Notes
Registrant12345678910111213141516171819202122232425
Duke Energy Corporation  
Duke Energy Carolinas, LLC       
Progress Energy, Inc.    
Duke Energy Progress, LLC       
Duke Energy Florida, LLC     
Duke Energy Ohio, Inc.        
Duke Energy Indiana, LLC       
Tables within the notes may not sum across due to (i) Progress Energy's consolidation of Duke Energy Progress, Duke Energy Florida and other subsidiaries that are not registrants, as the(ii) Piedmont, a subsidiary registrant acquired on October 3, 2016, which is consolidated within Duke Energy amounts include balances frombut not separately stated in the combined presentation and (iii) other subsidiaries that are not registrants.
registrants but included in the consolidated Duke Energy balances.
  Applicable Notes
Registrant12345678910111213141516171819202122232425
Duke Energy Corporation  
Duke Energy Carolinas, LLC       
Progress Energy, Inc.    
Duke Energy Progress, LLC      
Duke Energy Florida, LLC     
Duke Energy Ohio, Inc.        
Duke Energy Indiana, Inc.       
1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Nature of Operations and Basis of Consolidation
Duke Energy Corporation (collectively with its subsidiaries, Duke Energy) is an energy company headquartered in Charlotte, North Carolina, subject to regulation by the Federal Energy Regulatory Commission (FERC). Duke Energy operates in the United States (U.S.) and Latin America primarily through its direct and indirect subsidiaries. Certain Duke Energy’sEnergy subsidiaries include itsare also subsidiary registrants, including Duke Energy Carolinas, LLC (Duke Energy Carolinas); Progress Energy, Inc. (Progress Energy); Duke Energy Progress, LLC (formerly Duke Energy Progress, Inc.) (Duke Energy Progress); Duke Energy Florida, LLC (formerly Duke Energy Florida, Inc.) (Duke Energy Florida); Duke Energy Ohio, Inc. (Duke Energy Ohio); and Duke Energy Indiana, Inc. (subsequently Duke Energy Indiana, LLC)LLC (Duke Energy Indiana). On October 3, 2016, Duke Energy acquired Piedmont Natural Gas Company, Inc. (Piedmont) which also became a wholly owned subsidiary and subsidiary registrant of Duke Energy. Duke Energy's consolidated financial statements include Piedmont's results of operations and cash flow activity subsequent to the acquisition. See Note 2 for additional information regarding the acquisition. When discussing Duke Energy’s consolidated financial information, it necessarily includes the results of its sixseven separate subsidiary registrants (collectively referred to as the Subsidiary Registrants), which along with Duke Energy, are collectively referred to as the Duke Energy Registrants (Duke Energy Registrants).
In October 2016, Duke Energy completed the acquisition of Piedmont, an energy services company whose principal business is the distribution of natural gas, for a total cash purchase price of $5.0 billion. The acquisition provides a foundation for establishing a broader strategic natural gas infrastructure platform within Duke Energy to complement the existing natural gas pipeline investments and the natural gas business located in the Midwest. For additional information on the details of this transaction including purchase price allocation and acquisition financing, see Note 2. Piedmont continues to maintain reporting requirements as a Securities and Exchange Commission (SEC) registrant.
In December 2016, Duke Energy completed an exit of the Latin American market to focus on its domestic regulated business, which was further bolstered by the acquisition of Piedmont. The sale of the International Energy business segment, excluding an equity method investment in National Methanol Company (NMC), was completed through two transactions including a sale of assets in Brazil to China Three Gorges (Luxembourg) Energy S.à.r.l. (CTG) and a sale of Duke Energy's remaining Latin American assets in Peru, Chile, Ecuador, Guatemala, El Salvador and Argentina to ISQ Enerlam Aggregator, L.P. and Enerlam (UK) Holding Ltd. (I Squared) (collectively, the International Disposal Group). For additional information on the sale of International Energy see Note 2.
The information in these combined notes relaterelates to each of the Duke Energy Registrants, excluding Piedmont, as noted in the Index to the Combined Notes to Consolidated Financial Statements. However, none of the registrants makesmake any representationsrepresentation as to information related solely to Duke Energy or the subsidiariesSubsidiary Registrants of Duke Energy other than itself.
These Consolidated Financial Statements include, after eliminating intercompany transactions and balances, the accounts of the Duke Energy Registrants and subsidiaries where the respective Duke Energy Registrants have control. These Consolidated Financial Statements also reflect the Duke Energy Registrants’ proportionate share of certain jointly owned generation and transmission facilities.
Duke Energy Carolinas is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of North Carolina and South Carolina. Duke Energy Carolinas is subject to the regulatory provisions of the North Carolina Utilities Commission (NCUC), Public Service Commission of South Carolina (PSCSC), U.S. Nuclear Regulatory Commission (NRC) and FERC. Substantially all of Duke Energy Carolinas’ operations qualify for regulatory accounting.
Progress Energy is a public utility holding company headquartered in Raleigh, North Carolina, subject to regulation by the FERC. Progress Energy conducts operations through its wholly owned subsidiaries, Duke Energy Progress and Duke Energy Florida. Substantially all of Progress Energy’s operations qualify for regulatory accounting.

121


PART II
DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Duke Energy Progress is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of North Carolina and South Carolina. Duke Energy Progress is subject to the regulatory provisions of the NCUC, PSCSC, NRC and FERC. Substantially all of Duke Energy Progress’ operations qualify for regulatory accounting. On August 1, 2015, Duke Energy Progress, a North Carolina corporation, converted into a North Carolina limited liability company.
Duke Energy Florida is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of Florida. Duke Energy Florida is subject to the regulatory provisions of the Florida Public Service Commission (FPSC), NRC and FERC. Substantially all of Duke Energy Florida’s operations qualify for regulatory accounting. On August 1, 2015, Duke Energy Florida, a Florida corporation, converted into a Florida limited liability company.
Duke Energy Ohio is a regulated public utility primarily engaged in the transmission and distribution of electricity in portions of Ohio and Kentucky, the generation and sale of electricity in portions of Kentucky and the transportation and sale of natural gas in portions of Ohio and Kentucky. Duke Energy Ohio also conducts competitive auctions for retail electricity supply in Ohio whereby recovery of the energy price is from retail customers and recorded in Operating Revenues on the Consolidated Statements of Operations and Comprehensive Income. Operations in Kentucky are conducted through its wholly owned subsidiary, Duke Energy Kentucky, Inc. (Duke Energy Kentucky). References herein to Duke Energy Ohio include Duke Energy Ohio and its subsidiaries, unless otherwise noted. Duke Energy Ohio is subject to the regulatory provisions of the Public Utilities Commission of Ohio (PUCO), Kentucky Public Service Commission (KPSC) and FERC. On April 2, 2015, Duke Energy completed the sale of its nonregulated Midwest generation business, which sold power into wholesale energy markets, to a subsidiary of Dynegy Inc. (Dynegy). For further information about the sale of the Midwest Generation business, refer to Note 2 "Acquisitions and Dispositions." Substantially all of Duke Energy Ohio's operations that remain after the sale qualify for regulatory accounting.

116


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

Duke Energy Indiana is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of Indiana. Duke Energy Indiana is subject to the regulatory provisions of the Indiana Utility Regulatory Commission (IURC) and FERC. Substantially all of Duke Energy Indiana’s operations qualify for regulatory accounting. On January 1, 2016, Duke Energy Indiana, an Indiana corporation, converted into an Indiana limited liability company.
Piedmont is a regulated public utility primarily engaged in the distribution of natural gas in portions of North Carolina, South Carolina and Tennessee. Piedmont is invested in joint venture businesses including regulated interstate natural gas transportation and storage and intrastate natural gas transportation businesses. Piedmont is subject to the regulatory provisions of the NCUC, PSCSC, Tennessee Regulatory Authority (TRA) and FERC. Substantially all of Piedmont's operations qualify for regulatory accounting.
Certain prior year amounts have been reclassified to conform to the current year presentation.
Other Current Assets and Liabilities
The following table provides detaila description of amounts included in Other within Current Assets or Current Liabilities that exceed 5 percent of total Current Assets or Current Liabilities on the Duke Energy Registrants' Consolidated Balance Sheets.Sheets at either December 31, 2016 or 2015.
 December 31, December 31,
(in millions)Location 2015
 2014
Location 2016
 2015
Duke Energy        
Accrued compensationCurrent Liabilities $621
 $638
Current Liabilities $765
 $619
Duke Energy Carolinas        
Accrued compensation Current Liabilities $213
 $216
Current Liabilities $248
 $213
Collateral liabilities Current Liabilities 141
 128
Current Liabilities 155
 141
Progress Energy      
   
   
  
Income taxes receivableCurrent Assets $129
 $718
Current Assets $19
 $129
Customer deposits Current Liabilities 373
 360
Current Liabilities 363
 373
Derivative liabilitiesCurrent Liabilities 201
 271
Current Liabilities 1
 201
Duke Energy Progress      
   
   
  
Income taxes receivableCurrent Assets $111
 $272
Current Assets $16
 $111
Customer deposits Current Liabilities 141
 135
Current Liabilities 141
 141
Accrued compensation Current Liabilities 108
 116
Current Liabilities 135
 108
Derivative liabilitiesCurrent Liabilities 76
 108
Current Liabilities 
 76
Duke Energy Florida      
   
   
  
Income taxes receivableCurrent Assets $
 $177
Customer deposits Current Liabilities 232
 225
Current Liabilities $222
 $232
Derivative liabilitiesCurrent Liabilities 125
 163
Current Liabilities 1
 125
Duke Energy Ohio      
   
   
  
Income taxes receivableCurrent Assets $59
 $40
Current Assets $16
 $59
Other receivableCurrent Assets 33
 39
Current Assets 
 33
Accrued litigation reserveCurrent Liabilities 80
 
Current Liabilities 4
 80
Collateral LiabilitiesCurrent Liabilities 48
 $42
Collateral liabilitiesCurrent Liabilities 62
 48
Duke Energy Indiana      
     
  
Income taxes receivableCurrent Assets $
 $98
Collateral liabilitiesCurrent Liabilities 44
 43
Current Liabilities $44
 $44
The current portion of deferred tax assets is included within Other in Current Assets at December 31, 2014. Due to the adoption of new accounting guidance issued by the
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PART II
DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Accounting Standards Board (FASB) related to the balance sheet classification of deferred taxes, all deferred tax assets and liabilities are classified as noncurrent at December 31, 2015. See Note 22 for information related to the presentation of deferred tax assets and liabilities on the Consolidated Balance Sheets.Statements – (Continued)

Discontinued Operations
The results of operations of the International Disposal Group and Duke Energy Ohio's nonregulated Midwest generationGeneration business and Duke Energy Retail Sales, LLC (collectively, Midwest Generation Disposal Group) have been classified as Discontinued Operations on theDuke Energy's Consolidated Statements of Operations. Duke Energy has elected to present cash flows of discontinued operations combined with cash flows of continuing operations. Unless otherwise noted, the notes to these consolidated financial statements exclude amounts related to discontinued operations for all periods presented and assets held for sale (AHFS) and liabilities associated with assets held for saleAHFS as of December 31, 2014.2015. See Note 2 for additional information.
For the year ended December 31, 2015, Duke Energy's Income from Discontinued Operations, net of tax was primarily related to results of operations of the nonregulated Midwest generation business and Duke Energy Retail Sales, LLC (collectively, the Disposal Group) prior to its sale on April 2, 2015, partially offset by a charge for a litigation reserve related to the Disposal Group. For the year ended December 31, 2014, Duke Energy’s Loss from Discontinued Operations, net of tax was primarily related to a write-down of the carrying amount of the assets to the estimated fair value of the Disposal Group, based on the transaction price included in the purchase sale agreement, and the operations of the Disposal Group. For the years ended December 31, 2013, Duke Energy’s Income From Discontinued Operations, net of tax was primarily related to the operations of the Disposal Group. See Note 2 for additional information.

117


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

For the years ended December 31, 2015, 2014 and 2013, Progress Energy’s (Loss) Income From Discontinued Operations, net of tax was primarily due to tax impacts related to prior sales of diversified businesses.
Amounts Attributable to Controlling Interests
For the year ended December 31, 2015, the amount of Income from Discontinued Operations, net of tax presented on the Consolidated Statements of Operations is fully attributable to controlling interests.
During 2014, Duke Energy and Progress Energy's amount of (Loss) Income (Loss) from Discontinued Operations, net of tax presented on the Consolidated Statements of Operations includes amounts attributable to noncontrolling interest. The following table presents Net Income Attributable to Duke Energy Corporation for continuing operations and discontinued operations for the years ended December 31, 2014 and 2013.operations.
Years ended December 31,
2014 2013
Duke
Progress
 Duke
Progress
Year ended December 31,
(in millions)Energy
Energy
 Energy
Energy
2016 2015 2014
Income from Continuing Operations$2,465
$880
 2,590
659
$2,578
 $2,654
 $2,538
Income from Continuing Operations Attributable to Noncontrolling Interests14
5

16
3
7
 9

5
Income from Continuing Operations Attributable to Duke Energy Corporation$2,451
$875

$2,574
$656
$2,571
 $2,645
 $2,533
(Loss) Income From Discontinued Operations, net of tax$(576)$(6) 86
16
$(408) $177
 $(649)
Loss from Discontinued Operations Attributable to Noncontrolling Interests, net of tax(8)
 (5)
Income from Discontinued Operations Attributable to Noncontrolling Interests, net of tax11
 6
 1
(Loss) Income From Discontinued Operations Attributable to Duke Energy Corporation, net of tax$(568)$(6)
$91
$16
$(419) $171
 $(650)
Net Income$1,889
$874

$2,676
$675
$2,170
 $2,831
 $1,889
Net Income Attributable to Noncontrolling Interests6
5
 11
3
18
 15
 6
Net Income Attributable to Duke Energy Corporation$1,883
$869

$2,665
$672
$2,152
 $2,816
 $1,883
Significant Accounting Policies
Use of Estimates
In preparing financial statements that conform to generally accepted accounting principles (GAAP) in the U.S., the Duke Energy Registrants must make estimates and assumptions that affect the reported amounts of assets and liabilities, the reported amounts of revenues and expenses and the disclosure of contingent assets and liabilities at the date of the financial statements. Actual results could differ from those estimates.
Regulatory Accounting
The majority of the Duke Energy Registrants’ operations are subject to price regulation for the sale of electricity and natural gas by state utility commissions or FERC. When prices are set on the basis of specific costs of the regulated operations and an effective franchise is in place such that sufficient natural gas or electric services can be sold to recover those costs, the Duke Energy Registrants apply regulatory accounting. Regulatory accounting changes the timing of the recognition of costs or revenues relative to a company that does not apply regulatory accounting. As a result, Regulatory assets and Regulatory liabilities are recognized on the Consolidated Balance Sheets. Regulatory assets and liabilities are amortized consistent with the treatment of the related cost in the ratemaking process. See Note 4 for further information.
Regulatory accounting rules also require recognition of a disallowance (also called "impairment") loss if it becomes probable that part of the cost of a plant under construction (or a recently completed plant or an abandoned plant) will be disallowed for ratemaking purposes and a reasonable estimate of the amount of the disallowance can be made. Other disallowances can require judgments on allowed future rate recovery.
When it becomes probable that regulated generation, transmission or distribution assets will be abandoned, the cost of the asset is removed from plant in service. The value that may be retained as a regulatory asset on the balance sheet for the abandoned property is dependent upon amounts that may be recovered through regulated rates, including any return. As such, an impairment charge could be partially or fully offset by the establishment of a regulatory asset if rate recovery is probable. The impairment for a disallowance of costs for regulated plants under construction, recently completed or abandoned is based on discounted cash flows.
Regulated Fuel Costs and Purchased PowerGas Adjustment Clauses
The Duke Energy Registrants utilize cost-tracking mechanisms, commonly referred to as fuel adjustment clauses.clauses or purchased gas adjustment clauses (PGA). These clauses allow for the recovery of fuel and fuel-related costs, and portions of purchased power, natural gas costs and hedging costs through surcharges on customer rates. The difference between the costs incurred and the surcharge revenues is recorded either as an adjustment to Operating Revenues, – Regulated electric or Operating Expenses – Fuel used in electric generation or Operating Expenses – Cost of natural gas on the Consolidated Statements of Operations, with an off-setting impact on regulatory assets or liabilities.

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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

Cash and Cash Equivalents
All highly liquid investments with maturities of three months or less at the date of acquisition are considered cash equivalents. At December 31, 2015, $534 million of Duke Energy’s total cash and cash equivalents is held by entities domiciled in foreign jurisdictions. During the fourth quarter of 2014, Duke Energy declared a taxable dividend of historical foreign earnings in the form of notes payable that will result in the repatriation of approximately $2.7 billion in cash held and expected to be generated by International Energy over a period of up to eight years. Approximately $1.5 billion was remitted in 2015. See Note 22 to the

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DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements “Income Taxes,” for additional information.– (Continued)

Restricted Cash
The Duke Energy Registrants have restricted cash related primarily to collateral assets, escrow deposits and variable interest entities (VIEs). Restricted cash balances are reflected in Other within Current Assets and in Other within Investments and Other Assets on the Consolidated Balance Sheets. At December 31, 20152016 and 2014,2015, Duke Energy had restricted cash totaling $108$137 million and $298$98 million, respectively.
Inventory
Inventory is used for operations and is recorded primarily using the average cost method. Inventory related to regulated operations is valued at historical cost. Inventory related to nonregulated operations is valued at the lower of cost or market. Materials and supplies are recorded as inventory when purchased and subsequently charged to expense or capitalized to property, plant and equipment when installed. Reserves are established for excess and obsolete inventory. Inventory reserves were not material at December 31, 20152016 and 2014.2015. The components of inventory are presented in the tables below.
December 31, 2015December 31, 2016
  Duke
   Duke
 Duke
 Duke
 Duke
  Duke
   Duke
 Duke
 Duke
 Duke
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions) Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Materials and supplies $2,389
 $785
 $1,133
 $776
 $357
 $81
 $301
$2,374
 $767
 $1,167
 $813
 $354
 $84
 $312
Coal held for electric generation 1,114
 451
 370
 192
 178
 16
 267
Oil, gas and other fuel held for electric generation 307
 40
 248
 120
 128
 8
 2
Coal774
 251
 314
 148
 166
 19
 190
Natural gas, oil and other374
 37
 236
 115
 121
 34
 2
Total inventory $3,810
 $1,276
 $1,751
 $1,088
 $663
 $105
 $570
$3,522
 $1,055
 $1,717
 $1,076
 $641
 $137
 $504
December 31, 2014December 31, 2015
  Duke
   Duke
 Duke
 Duke
 Duke
  Duke
   Duke
 Duke
 Duke
 Duke
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions) Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Materials and supplies $2,102
 $719
 $981
 $676
 $305
 $67
 $258
$2,343
 $785
 $1,133
 $776
 $357
 $81
 $301
Coal held for electric generation 997
 362
 329
 150
 178
 21
 275
Oil, gas and other fuel held for electric generation 360
 43
 280
 140
 140
 9
 4
Coal1,105
 451
 370
 192
 178
 16
 267
Natural gas, oil and other298
 40
 248
 120
 128
 8
 2
Total inventory $3,459
 $1,124
 $1,590
 $966
 $623
 $97
 $537
$3,746
 $1,276
 $1,751
 $1,088
 $663
 $105
 $570
Investments in Debt and Equity Securities
The Duke Energy Registrants classify investments into two categories – trading and available-for-sale. Both categories are recorded at fair value on the Consolidated Balance Sheets. Realized and unrealized gains and losses on trading securities are included in earnings. For certain investments of regulated operations, such as the Nuclear Decommissioning Trust Fund (NDTF), realized and unrealized gains and losses (including any other-than-temporary impairments)impairments (OTTIs)) on available-for-sale securities are recorded as a regulatory asset or liability. Otherwise, unrealized gains and losses are included in Accumulated Other Comprehensive Income (AOCI), unless other-than-temporarily impaired. Other-than-temporary impairmentsOTTIs for equity securities and the credit loss portion of debt securities of nonregulated operations are included in earnings. Investments in debt and equity securities are classified as either current or noncurrent based on management’s intent and ability to sell these securities, taking into consideration current market liquidity. See Note 15 for further information.
Goodwill and Intangible Assets
Goodwill
Duke Energy, Progress Energy and Duke Energy Ohio perform annual goodwill impairment tests as of August 31 each year at the reporting unit level, which is determined to be an operating segment or one level below. Duke Energy, Progress Energy and Duke Energy Ohio update these tests between annual tests if events or circumstances occur that would more likely than not reduce the fair value of a reporting unit below its carrying value.

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DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

Intangible Assets
Intangible assets are included in Other in Investments and Other Assets on the Consolidated Balance Sheets. Generally, intangible assets are amortized using an amortization method that reflects the pattern in which the economic benefits of the intangible asset are consumed or on a straight-line basis if that pattern is not readily determinable. Amortization of intangibles is reflected in Depreciation and amortization on the Consolidated Statements of Operations. Intangible assets are subject to impairment testing and if impaired, the carrying value is accordingly reduced.
Emission allowances permit the holder of the allowance to emit certain gaseous byproducts of fossil fuel combustion, including sulfur dioxide (SO2) and nitrogen oxide (NOX).oxide. Allowances are issued by the U.S. Environmental Protection Agency (EPA) at zero cost and may also be bought and sold via third-party transactions. Allowances allocated to or acquired by the Duke Energy Registrants are held primarily for consumption. Carrying amounts for emission allowances are based on the cost to acquire the allowances or, in the case of a business combination, on the fair value assigned in the allocation of the purchase price of the acquired business. Emission allowances are expensed to Fuel used in electric generation and purchased power – regulated on the Consolidated Statements of Operations.

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DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Renewable energy certificates are used to measure compliance with renewable energy standards and are held primarily for consumption. See Note 11 for further information.
Long-Lived Asset Impairments
The Duke Energy Registrants evaluate long-lived assets, excluding goodwill, for impairment when circumstances indicate the carrying value of those assets may not be recoverable. An impairment exists when a long-lived asset’s carrying value exceeds the estimated undiscounted cash flows expected to result from the use and eventual disposition of the asset. The estimated cash flows may be based on alternative expected outcomes that are probability weighted. If the carrying value of the long-lived asset is not recoverable based on these estimated future undiscounted cash flows, the carrying value of the asset is written-down to its then-current estimated fair value and an impairment charge is recognized.
The Duke Energy Registrants assess fair value of long-lived assets using various methods, including recent comparable third-party sales, internally developed discounted cash flow analysis and analysis from outside advisers.advisors. Significant changes in commodity prices, the condition of an asset or management’s interest in selling the asset are generally viewed as triggering events to reassess cash flows.
Property, Plant and Equipment
Property, plant and equipment are stated at the lower of depreciated historical cost net of any disallowances or fair value, if impaired. The Duke Energy Registrants capitalize all construction-related direct labor and material costs, as well as indirect construction costs such as general engineering, taxes and financing costs. See “Allowance for Funds Used During Construction (AFUDC) and Interest Capitalized” for information on capitalized financing costs. Costs of renewals and betterments that extend the useful life of property, plant and equipment are also capitalized. The cost of repairs, replacements and major maintenance projects, which do not extend the useful life or increase the expected output of the asset, are expensed as incurred. Depreciation is generally computed over the estimated useful life of the asset using the composite straight-line method. Depreciation studies are conducted periodically to update composite rates and are approved by state utility commissions and/or the FERC when required. The composite weighted average depreciation rates, excluding nuclear fuel, are included in the table that follows.
Years Ended December 31,Years Ended December 31,
2015
 2014
 2013
2016
 2015
 2014
Duke Energy 2.9% 2.8% 2.8%2.8% 2.9% 2.8%
Duke Energy Carolinas 2.8% 2.7% 2.8%2.8% 2.8% 2.7%
Progress Energy 2.6% 2.5% 2.5%2.7% 2.6% 2.5%
Duke Energy Progress 2.6% 2.5% 2.5%2.6% 2.6% 2.5%
Duke Energy Florida 2.7% 2.7% 2.4%2.8% 2.7% 2.7%
Duke Energy Ohio 2.7% 2.3% 3.3%2.6% 2.7% 2.3%
Duke Energy Indiana 3.0% 3.0% 2.8%3.1% 3.0% 3.0%
In general, when the Duke Energy Registrants retire regulated property, plant and equipment, the original cost plus the cost of retirement, less salvage value, is charged to accumulated depreciation. However, when it becomes probable a regulatedthe asset will be retired substantially in advance of its original expected useful life or is abandoned, the cost of the asset and the corresponding accumulated depreciation is recognized as a separate asset. If the asset is still in operation, the net amount is classified as Generation facilities to be retired, net on the Consolidated Balance Sheets. If the asset is no longer operating, the net amount is classified in Regulatory Assets on the Consolidated Balance Sheets. When it becomes probable that meters or other regulated mass utility assets will be abandoned, the cost of the asset and accumulated depreciation is reclassified to regulatory assets for amounts recoverable in rates. The carrying value of the asset is based on historical cost if the Duke Energy Registrants are allowed to recover the remaining net book value and a return equal to at least the incremental borrowing rate. If not, an impairment is recognized to the extent the net book value of the asset exceeds the present value of future revenues discounted at the incremental borrowing rate.
When the Duke Energy Registrants sell entire regulated operating units, or retire or sell nonregulated properties, the original cost and accumulated depreciation and amortization balances are removed from Property, Plant and Equipment on the Consolidated Balance Sheets. Any gain or loss is recorded in earnings, unless otherwise required by the applicable regulatory body.
See Note 10 for further information.

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DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

Nuclear Fuel
Nuclear fuel is classified as Property, Plant and Equipment on the Consolidated Balance Sheets, except for Duke Energy Florida. ReferNuclear fuel amounts at Duke Energy Florida were reclassified to Note 4, “Regulatory Matters,”Regulatory assets pursuant to a settlement among Duke Energy Florida, the Florida Office of Public Counsel (Florida OPC) and other customer advocates (the 2013 Settlement). Portions of the nuclear fuel balances that were under contract for additional informationsale were subsequently moved to Other within Current Assets and Other within Investments and Other Assets on Crystal River Unit 3 investments, including nuclear fuel.the Consolidated Balance Sheets.
Nuclear fuel in the front-end fuel processing phase is considered work in progress and not amortized until placed in service. Amortization of nuclear fuel is included within Fuel used in electric generation and purchased power – regulated inon the Consolidated Statements of Operations. Amortization is recorded using the units-of-production method.

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DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Allowance for Funds Used During Construction and Interest Capitalized
For regulated operations, the debt and equity costs of financing the construction of property, plant and equipment are reflected as AFUDC and capitalized as a component of the cost of property, plant and equipment. AFUDC equity is reported on the Consolidated Statements of Operations as non-cash income in Other income and expenses, net. AFUDC debt is reported as a non-cash offset to Interest Expense. After construction is completed, the Duke Energy Registrants are permitted to recover these costs through their inclusion in rate base and the corresponding subsequent depreciation or amortization of those regulated assets.
AFUDC equity, a permanent difference for income taxes, reduces the effective tax rate (ETR) when capitalized and increases the effective tax rateETR when depreciated or amortized. See Note 22 for additional information.
For nonregulated operations, interest is capitalized during the construction phase with an offsetting non-cash credit to Interest Expense on the Consolidated Statements of Operations.
Asset Retirement Obligations
Asset retirement obligations (AROs) are recognized for legal obligations associated with the retirement of property, plant and equipment. Substantially all asset retirement obligationsAROs are related to regulated operations. When recording an asset retirement obligation,ARO, the present value of the projected liability is recognized in the period in which it is incurred, if a reasonable estimate of fair value can be made. The liability is accreted over time. For operating plants, the present value of the liability is added to the cost of the associated asset and depreciated over the remaining life of the asset. For retired plants, the present value of the liability is recorded as a regulatory asset.asset unless determined not to be recoverable.
The present value of the initial obligation and subsequent updates are based on discounted cash flows, which include estimates regarding timing of future cash flows, selection of discount rates and cost escalation rates, among other factors. These estimates are subject to change. Depreciation expense is adjusted prospectively for any changes to the carrying amount of the associated asset. The Duke Energy Registrants receive amounts to fund the cost of the asset retirement obligationARO for regulated operations through a combination of regulated revenues and earnings on the NDTF. As a result, amounts recovered in regulated revenues, earnings on the NDTF, accretion expense and depreciation of the associated asset are allnetted and deferred as a regulatory asset or liability.
Obligations for nuclear decommissioning are based on-site-specificon site-specific cost studies. Duke Energy Carolinas and Duke Energy Progress assume prompt dismantlement of the nuclear facilities after operations are ceased. Duke Energy Florida assumes Crystal River Unit 3 Nuclear Plant (Crystal River Unit 3) will be placed into a safe storage configuration until eventual dismantlement is completed by 2074. Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida also assume that spent fuel will be stored on-site until such time that it can be transferred to a yet to be built U.S. Department of Energy (DOE) facility.
Obligations for closure of ash basins are based upon discounted cash flows of estimated costs for site specificsite-specific plans, if known, or probability weightings of the potential closure methods if the closure plans are under development and multiple closure options are being considered and evaluated on a site-by-site basis. See Note 9 for additional information.
Revenue Recognition and Unbilled Revenue
Revenues on sales of electricity and natural gas are recognized when service is provided or the product is delivered. Unbilled revenues are recognized by applying customer billing rates to the estimated volumes of energy or natural gas delivered but not yet billed. Unbilled revenues can vary significantly from period to period as a result of seasonality, weather, customer usage patterns, customer mix, average price in effect for customer classes, timing of rendering customer bills and meter reading schedules.
Unbilled revenues are included within Receivables and Restricted receivables of variable interest entitiesVIEs on the Consolidated Balance Sheets as shown in the following table. This table excludes amounts included in assets held for sale (AHFS) at December 31, 2014.
December 31,December 31,
(in millions) 2015
 2014
2016
 2015
Duke Energy $748
 $827
$831
 $677
Duke Energy Carolinas 283
 295
313
 283
Progress Energy 172
 217
161
 172
Duke Energy Progress 102
 135
102
 102
Duke Energy Florida 70
 82
59
 70
Duke Energy Ohio 3
 
2
 3
Duke Energy Indiana 31
 27
32
 31

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DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

Additionally, Duke Energy Ohio and Duke Energy Indiana sell, on a revolving basis, nearly all of their retail accounts receivable, including receivables for unbilled revenues, to an affiliate, Cinergy Receivables Company LLC (CRC) and account for the transfers of receivables as sales. Accordingly, the receivables sold are not reflected on the Consolidated Balance Sheets of Duke Energy Ohio and Duke Energy Indiana. See Note 17 for further information. These receivables for unbilled revenues are shown in the table below.
December 31,December 31,
(in millions)2015
 2014
2016
 2015
Duke Energy Ohio$71
 $79
$97
 $71
Duke Energy Indiana97
 112
123
 97

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DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Allowance for Doubtful Accounts
Allowances for doubtful accounts are presented in the following table.
December 31,December 31,
(in millions) 2015
 2014
 2013
2016
 2015
 2014
Allowance for Doubtful Accounts              
Duke Energy $18
 17
 30
$14
 $12
 $14
Duke Energy Carolinas 3
 3
 3
2
 3
 3
Progress Energy 6
 8
 14
6
 6
 8
Duke Energy Progress 4
 7
 10
4
 4
 7
Duke Energy Florida 2
 2
 4
2
 2
 2
Duke Energy Ohio 2
 2
 2
2
 2
 2
Duke Energy Indiana 1
 1
 1
1
 1
 1
Allowance for Doubtful Accounts VIEs
             
Duke Energy $53
 51
 43
$54
 $53
 $51
Duke Energy Carolinas 7
 6
 6
7
 7
 6
Progress Energy 8
 8
 
7
 8
 8
Duke Energy Progress 5
 5
 
5
 5
 5
Duke Energy Florida 3
 3
 
2
 3
 3
Derivatives and Hedging
Derivative and non-derivative instruments may be used in connection with commodity price and interest rate and foreign currency risk management activities, including swaps, futures, forwards and options. All derivative instruments, except those that qualify for the normal purchase/normal sale (NPNS) exception, are recorded on the Consolidated Balance Sheets at fair value. Qualifying derivative instruments may be designated as either cash flow hedges or fair value hedges. Other derivative instruments (undesignated contracts) either have not been designated or do not qualify as hedges. The effective portion of the change in the fair value of cash flow hedges is recorded in AOCI. The effective portion of the change in the fair value of a fair value hedge is offset in net income by changes in the hedged item. For activity subject to regulatory accounting, gains and losses on derivative contracts are reflected as regulatory assets or liabilities and not as other comprehensive income or current period income. As a result, changes in fair value of these derivatives have no immediate earnings impact.
Formal documentation, including transaction type and risk management strategy, is maintained for all contracts accounted for as a hedge. At inception and at least every three months thereafter, the hedge contract is assessed to see if it is highly effective in offsetting changes in cash flows or fair values of hedged items.
See Note 14 for further information.
Captive Insurance Reserves
Duke Energy has captive insurance subsidiaries that provide coverage, on an indemnity basis, to the Subsidiary Registrants as well as certain third parties, on a limited basis, for various business risks and losses, such as property, workers’ compensation and general liability. Liabilities include provisions for estimated losses incurred but not yet reported (IBNR), as well as estimated provisions for known claims. IBNR reserve estimates are primarily based upon historical loss experience, industry data and other actuarial assumptions. Reserve estimates are adjusted in future periods as actual losses differ from experience.
Duke Energy, through its captive insurance entities, also has reinsurance coverage with third parties for certain losses above a per occurrence and/or aggregate retention. Receivables for reinsurance coverage are recognized when realization is deemed probable.
Unamortized Debt Premium, Discount and Expense
Premiums, discounts and expenses incurred with the issuance of outstanding long-term debt are amortized over the term of the debt issue. Call premiums and unamortized expensesThe gain or loss on extinguishment associated with refinancing higher-cost debt obligations in the regulated operations areis amortized. Amortization expense is recorded as Interest Expense in the Consolidated Statements of Operations and is reflected as Depreciation, amortization and accretion within Net cash provided by operating activities on the Consolidated Statements of Cash Flows.

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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

During 2015, Duke Energy retrospectively adopted revised accounting guidance related to the presentation of debt issuance costs. Unamortized debt issuance costPremiums, discounts and expenses are presented as a reductionan adjustment to the carrying value of the debt amount and included in Long-Term Debt on the Consolidated Balance Sheets presented. See discussion of New Accounting Standards below for further information.
Loss Contingencies and Environmental Liabilities
Contingent losses are recorded when it is probable a loss has occurred and can be reasonably estimated. When a range of the probable loss exists and no amount within the range is a better estimate than any other amount, the minimum amount in the range is recorded. Unless otherwise required by GAAP, legal fees are expensed as incurred.
Environmental liabilities are recorded on an undiscounted basis when environmental remediation or other liabilities become probable and can be reasonably estimated. Environmental expenditures related to past operations that do not generate current or future revenues are expensed. Environmental expenditures related to operations that generate current or future revenues are expensed or capitalized, as appropriate. Certain environmental expenditures receive regulatory accounting treatment and are recorded as regulatory assets.

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DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

See Notes 4 and 5 for further information.
Pension and Other Post-Retirement Benefit Plans
Duke Energy maintains qualified, non-qualified and other post-retirement benefit plans. Eligible employees of the Subsidiary Registrants participate in the respective qualified, non-qualified and other post-retirement benefit plans and the Subsidiary Registrants are allocated their proportionate share of benefit costs. See Note 21 for further information, including significant accounting policies associated with these plans.
Severance and Special Termination Benefits
Duke Energy has a severance plan under which, in general, the longer a terminated employee worked prior to termination the greater the amount of severance benefits. A liability for involuntary severance is recorded once an involuntary severance plan is committed to by management if involuntary severances are probable and can be reasonably estimated. For involuntary severance benefits incremental to its ongoing severance plan benefits, the fair value of the obligation is expensed at the communication date if there are no future service requirements or over the required future service period. From time to time, Duke Energy offers special termination benefits under voluntary severance programs. Special termination benefits are recorded immediately upon employee acceptance absent a significant retention period. Otherwise, the cost is recorded over the remaining service period. Employee acceptance of voluntary severance benefits is determined by management based on the facts and circumstances of the benefits being offered. See Note 19 for further information.
Guarantees
Liabilities are recognized at the time of issuance or material modification of a guarantee for the estimated fair value of the obligation it assumes. Fair value is estimated using a probability-weighted approach. The obligation is reduced over the term of the guarantee or related contract in a systematic and rational method as risk is reduced. Any additional contingent loss for guarantee contracts subsequent to the initial recognition of a liability is accounted for and recognized at the time a loss is probable and can be reasonably estimated. See Note 7 for further information.
Stock-Based Compensation
Stock-based compensation represents costs related to stock-based awards granted to employees and Duke Energy Board of Directors (Board of Directors) members. Duke Energy recognizes stock-based compensation based upon the estimated fair value of awards, net of estimated forfeitures at the date of issuance. The recognition period for these costs begins at either the applicable service inception date or grant date and continues throughout the requisite service period, or, for certain share-based awards, until the employee becomes retirement eligible, if earlier.period. Compensation cost is recognized as expense or capitalized as a component of property, plant and equipment. See Note 20 for further information.
Income Taxes
Duke Energy and its subsidiaries file a consolidated federal income tax return and other state and foreign jurisdictional returns. The Subsidiary Registrants entered into a tax-sharing agreement with Duke Energy. Income taxes recorded represent amounts the Subsidiary Registrants would incur as separate C-Corporations. Deferred income taxes have been provided for temporary differences between GAAP and tax bases of assets and liabilities because the differences create taxable or tax-deductible amounts for future periods. Deferred taxes are not provided on translation gains and losses when earnings of a foreign operation are expected to be indefinitely reinvested. Investment tax credits (ITC)(ITCs) associated with regulated operations are deferred and amortized as a reduction of income tax expense over the estimated useful lives of the related properties.
Positions taken or expected to be taken on tax returns, including the decision to exclude certain income or transactions from a return, are recognized in the financial statements when it is more likely than not the tax position can be sustained based solely on the technical merits of the position. The largest amount of tax benefit that is greater than 50 percent likely of being effectively settled is recorded. Management considers a tax position effectively settled when: (i) the taxing authority has completed its examination procedures, including all appeals and administrative reviews; (ii) the Duke Energy Registrants do not intend to appeal or litigate the tax position included in the completed examination; and (iii) it is remote that the taxing authority would examine or re-examine the tax position. The amount of a tax return position that is not recognized in the financial statements is disclosed as an unrecognized tax benefit. If these unrecognized tax benefits are later recognized, then there will be a decrease in income taxes payable, an income tax refundexpense or a reclassification between deferred and current taxes payable. If the portion of tax benefits that has been recognized changes and those tax benefits are subsequently unrecognized, then the previously recognized tax benefits may impact the financial statements through increasing income tax expense or a reclassification between deferred and current taxes payable, reducing income tax refunds receivable or changing deferred taxes.payable. Changes in assumptions on tax benefits may also impact interest expense or interest income and may result in the recognition of tax penalties.

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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

Tax-related interest and penalties are recorded in Interest Expense and Other Income and Expenses, net in the Consolidated Statements of Operations.
See Note 22 for further information.
Accounting for Renewable Energy Tax Credits and Cash Grants
When Duke Energy receives ITCITCs or cash grants on wind or solar facilities, it reduces the basis of the property recorded on the Consolidated Balance Sheets by the amount of the ITC or cash grant and, therefore, the ITC or grant benefit is ultimately recognized in the statement of operations through reduced depreciation expense. Additionally, certain tax credits and government grants result in an initial tax depreciable base in excess of the book carrying value by an amount equal to one half of the ITC or government grant. Deferred tax benefits are recorded as a reduction to income tax expense in the period that the basis difference is created.

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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Excise Taxes
Certain excise taxes levied by state or local governments are required to be paid even if not collected from the customer. These taxes are recognized on a gross basis. Otherwise, the taxes are accounted for net. Excise taxes accounted for on a gross basis as both operating revenues and property and other taxes in the Consolidated Statements of Operations were as follows.
Years Ended December 31,Years Ended December 31,
(in millions) 2015
 2014
 2013
2016
 2015
 2014
Duke Energy $396
 $498
 $602
$362
 $396
 $498
Duke Energy Carolinas 31
 94
 164
31
 31
 94
Progress Energy 229
 263
 304
213
 229
 263
Duke Energy Progress 16
 56
 115
18
 16
 56
Duke Energy Florida 213
 207
 189
195
 213
 207
Duke Energy Ohio 102
 103
 105
100
 102
 103
Duke Energy Indiana 34
 38
 29
17
 34
 38
On July 23, 2013, North Carolina House Bill 998, (HB 998 or the North Carolina Tax Simplification and Rate Reduction Act)Act (HB 998) was signed into law. HB 998 repealed the utility franchise tax effective July 1, 2014. The utility franchise tax was a 3.22 percent gross receipts tax on sales of electricity. The result of this change in law is an annual reduction in excise taxes of approximately $160 million for Duke Energy Carolinas and approximately $110 million for Duke Energy Progress. HB 998 also increases sales tax on electricity from 3 percent to 7 percent effective July 1, 2014. HB 998 requires the NCUC to adjust retail electric rates for the elimination of the utility franchise tax, changes due to the increase in sales tax on electricity and the resulting change in liability of utility companies under the general franchise tax.
Foreign Currency Translation
The local currencies of most of Duke Energy’s foreign operations have been determined to be their functional currencies. However, certain foreign operations’ functional currency has been determined to be the U.S. dollar, based on an assessment of the economic circumstances of the foreign operationAssets and liabilities of foreign operations whose functional currency is not the U.S. dollar are translated into U.S. dollars at the exchange rates in effect at period end. Translation adjustments resulting from changes in exchange rates are included in AOCI. Revenue and expense accounts are translated at average exchange rates during the year. Remeasurement gains and losses arising from balances and transactions denominated in currencies other than the local currency are included in the results of operations when they occur.
Dividend Restrictions and Unappropriated Retained Earnings
Duke Energy does not have any legal, regulatory or other restrictions on paying common stock dividends to shareholders. However, as further described in Note 4, due to conditions established by regulators in conjunction with merger transaction approvals, Duke Energy Carolinas, Duke Energy Progress, Duke Energy Ohio, and Duke Energy Indiana and Piedmont have restrictions on paying dividends or otherwise advancing funds to Duke Energy. At December 31, 20152016 and 2014,2015, an insignificant amount of Duke Energy’s consolidated Retained earnings balance represents undistributed earnings of equity method investments.
New Accounting Standards
The new accounting standards that were adopted for 2015, 2014 and 2013 had no material impact on the presentation or results of operations, cash flows or financial position of the Duke Energy Registrants. The following accounting standards were adopted by the Duke Energy Registrants during 2015.
Reporting Discontinued Operations. In April 2014, the Financial Accounting Standards Board (FASB) issued revised accounting guidance for reporting discontinued operations. A discontinued operation would be either (i) a component of an entity or a group of components of an entity that represents a separate major line of business or major geographical area of operations that either has been disposed of or is part of a single coordinated plan to be classified as held for sale or (ii) a business that, upon acquisition, meets the criteria to be classified as held for sale.
For Duke Energy, the revised accounting guidance is effective on a prospective basis for qualified disposals of components or classifications as held for sale that occurred after January 1, 2015. Under the standard, the guidance is not effective for a component classified as held for sale before the effective date even if the disposal occurs after the effective date of the guidance. Duke Energy has not reported any discontinued operations under the revised accounting guidance.

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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

Balance Sheet Classification of Deferred Taxes. In November 2015, the FASB issued revised accounting guidance for the Balance Sheet classification of deferred taxes. The core principle of this revised accounting guidance is that all deferred tax assets and liabilities should be classified as noncurrent. For Duke Energy, this revised accounting guidance was adopted prospectively for December 31, 2015. The Balance Sheet as of December 31, 2014, does not reflect this reclassification of current deferred tax assets and liabilities. See Note 22 for further information on the impact from adoption of this accounting standard.
Balance Sheet Presentation of Debt Issuance Costs. In April and August 2015, the FASB issued revised accounting guidance for the presentation of debt issuance costs. The core principle of this revised accounting guidance is that debt issuance costs are not assets, but adjustments to the carrying cost of debt. For Duke Energy, this revised accounting guidance was adopted retrospectively to December 31, 2014.
The implementation of this accounting standard resulted in a reduction of Other within Regulatory Assets and Deferred Debits and in Long-Term Debt of $170 million and $152 million on the Consolidated Balance Sheets as of December 31, 2015 and 2014, respectively.
Fair Value Disclosures for Certain Investments. In May 2015, the FASB issued revised accounting guidance for investments in certain entities that use net asset value per share (or its equivalent) as a ‘practical expedient’ to determine fair value. The core principle of this revised accounting guidance is that the valuation of investments using the ‘practical expedient’ should not be categorized within the fair value hierarchy (i.e., as Level 1, 2 or 3). The ‘practical expedient’ applies to investments in investment companies for which there is not a readily determinable fair value (market quote) or the investment is not in a mutual fund with a publicly available net asset value. For Duke Energy, this revised accounting guidance was adopted retrospectively. The implementation of this guidance is reflected in Note 16: Fair Value Measurements and Note 21: Employee Benefit Plans.
The following new accounting standards have been issued, but have not yet been adopted by the Duke Energy Registrants, as of December 31, 2015.2016.
Goodwill Impairment. In January 2017, the Financial Accounting Standards Board (FASB) issued revised guidance for subsequent measurement of goodwill. Under the updated guidance, a company will recognize an impairment to goodwill for the amount by which a reporting unit's carrying value exceeds the reporting unit's fair value, not to exceed the amount of goodwill allocated to that reporting unit. Duke Energy is unable to determine the future impact of adopting this guidance.
For Duke Energy, this guidance is effective for interim and annual periods beginning January 1, 2020, but may be early adopted for interim or annual goodwill tests performed on testing dates after January 1, 2017. The guidance will be applied on a prospective basis.
Revenue from Contracts with Customers. In May 2014, the FASB issued revised accounting guidance for revenue recognition from contracts with customers. The core principle of this guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The amendments in this update also require disclosure of sufficient information to allow users to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers.
Most of Duke Energy’s revenue is expected to be in scope of the new guidance. The majority of our sales, including energy provided to residential customers, are from tariff offerings that provide natural gas or electricity without a defined contractual term (‘at-will’). For such arrangements, Duke Energy expects that the revenue from contracts with customers will be equivalent to the electricity or natural gas supplied and billed in that period (including estimated billings). As such, Duke Energy does not expect that there will be a significant shift in the timing or pattern of revenue recognition for such sales. The evaluation of other revenue streams is ongoing, including long-term contracts with industrial customers and long-term purchase power agreements (PPA).
Duke Energy continues to evaluate what information would be most useful for users of the financial statements, including information already provided in disclosures outside of the financial statement footnotes. These additional disclosures could include the disaggregation of revenues by geographic location, type of service, customer class or by duration of contract (‘at-will’ versus contracted revenue). Revenues from contracts with customers, revenue recognized under regulated operations accounting and revenue from lease accounting will also be disclosed.
Duke Energy intends to use the modified retrospective method of adoption effective January 1, 2018. This method results in a cumulative change effect that will be recorded as an adjustment to retained earnings as of January 1, 2018, as if the standard had always been in effect. Disclosures for 2018 will include a comparison to what would have been reported for 2018 under the current revenue recognition rules in order to assist financial statement users in understanding how revenue recognition has changed as a result of this standard and to facilitate comparability with prior year reported results, which are not restated under the modified retrospective approach.

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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Leases. In February 2016, the FASB issued revised accounting guidance for leases. The core principle of this guidance is that a lessee should recognize the assets and liabilities that arise from leases on the balance sheet.
For Duke Energy, this guidance is effective for interim and annual periods beginning January 1, 2019, although it can be early adopted. The guidance is applied using a modified retrospective approach. Duke Energy is currently evaluating the financial statement impact of adopting this standard. Other than an expected increase in assets and liabilities, the ultimate impact of the new standard has not yet been determined. Significant system enhancements may be required to facilitate the identification, tracking and reporting of potential leases based upon requirements of the new lease standard.
Stock-Based Compensation and Income Taxes. In March 2016, the FASB issued revised accounting guidance for stock-based compensation and the associated income taxes. This standard changes certain aspects of accounting for stock-based payment awards to employees including the accounting for income taxes, statutory tax withholding requirements, as well as classification on the Consolidated Statements of Cash Flows. The primary future impact to the Duke Energy Registrants is expected to be a small increase in the volatility of income tax expense. This guidance will be adopted prospectively, retrospectively, or using a modified retrospective approach depending on the item changed for the period beginning January 1, 2017.
Statement of Cash Flows. In November 2016, the FASB issued revised accounting guidance to reduce diversity in practice for the presentation and classification of restricted cash on the statement of cash flows. Under the updated guidance, restricted cash and restricted cash equivalents will be included within beginning-of-period and end-of-period cash and cash equivalents on the statement of cash flows.
For Duke Energy, this guidance is effective for the interim and annual periods beginning January 1, 2018, although it can be early adopted for annual periods beginning as early as January 1, 2017.adopted. The guidance canwill be applied retroactivelyusing a retrospective transition method to all prior reporting periods presented or retrospectively with a cumulative effect as of the initial date of application.each period presented. Upon adoption by Duke Energy, is currently evaluating the requirements. The ultimate impactrevised guidance will result in a change in total cash, cash equivalents and amounts generally described as restricted cash or restricted cash equivalents explained when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. Prior to adoption, the new standard has not yet been determined.Duke Energy Registrants reflect changes in restricted cash within Cash Flows from Investing Activities on the Consolidated Statement of Cash Flows.
Financial Instruments Classification and Measurement. In January 2016, the FASB issued revised accounting guidance for the classification and measurement of financial instruments. Changes in the fair value of all equity securities will be required to be recorded in net income. Current GAAP allows some changes in fair value for available-for-sale equity securities to be recorded in AOCI. Additional disclosures will be required to present separately the financial assets and financial liabilities by measurement category and form of financial asset. An entity's equity investments that are accounted for under the equity method of accounting are not included within the scope of the new guidance.
For Duke Energy, the revised accounting guidance is effective for interim and annual periods beginning January 1, 2018, by recording a cumulative change effect that will be recorded as an adjustment to the balance sheetretained earnings as of January 1, 2018. This guidance is expected to have minimal impact on the Duke Energy’s StatementEnergy Registrant's Consolidated Statements of Operations and Comprehensive Income as changes in the fair value of most of the Duke Energy'sEnergy Registrants' available-for-sale equity securities are deferred as regulatory assets or liabilities.liabilities pursuant to accounting guidance for regulated operations.
2. ACQUISITIONS AND DISPOSITIONS
ACQUISITIONS
The Duke Energy Registrants consolidate assets and liabilities from acquisitions as of the purchase date and include earnings from acquisitions in consolidated earnings after the purchase date.
Acquisition of Piedmont Natural Gas
On October 24, 2015,3, 2016, Duke Energy entered intoacquired all outstanding common stock of Piedmont for a total cash purchase price of $5.0 billion and assumed Piedmont's existing long-term debt, which had an Agreement and Planestimated fair value of Merger (Merger Agreement) withapproximately $2.0 billion at the time of the acquisition. Piedmont Natural Gas Company, Inc. (Piedmont),is a North Carolina corporation. Undercorporation primarily engaged in regulated natural gas distribution to residential, commercial, industrial and power generation customers in portions of North Carolina, South Carolina and Tennessee. Piedmont is also invested in joint-venture, energy-related businesses, including regulated interstate natural gas transportation and storage and regulated intrastate natural gas transportation. The acquisition provides a foundation for Duke Energy to establish a broader, long-term strategic natural gas infrastructure platform to complement its existing natural gas pipeline investments and regulated natural gas business in the termsMidwest. In connection with the closing of the Merger Agreement, Duke Energy will acquireacquisition, Piedmont for $4.9 billion in cash. Upon closing, Piedmont will becomebecame a wholly owned subsidiary of Duke Energy.
Pursuant
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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Preliminary Purchase Price Allocation
The preliminary purchase price allocation of the Piedmont acquisition is estimated as follows:
(in millions) 
Current assets$497
Property, plant and equipment, net4,714
Goodwill3,353
Other long-term assets804
Total assets9,368
Current liabilities, including current maturities of long-term debt576
Long-term liabilities1,790
Long-term debt2,002
Total liabilities4,368
Total purchase price$5,000
The fair value of Piedmont's assets and liabilities were determined based on significant estimates and assumptions that are judgmental in nature, including projected future cash flows (including timing); discount rates reflecting risk inherent in the future cash flows and market prices of long-term debt. The preliminary amounts are subject to revision to the Merger Agreement, uponextent that additional information is obtained about the closingfacts and circumstances that existed as of the acquisition date.
The majority of Piedmont’s operations are subject to the rate-setting authority of the NCUC, the PSCSC and the TRA and are accounted for pursuant to accounting guidance for regulated operations. The rate-setting and cost recovery provisions currently in place for Piedmont’s regulated operations provide revenues derived from costs, including a return on investment of assets and liabilities included in rate base. Thus, the fair value of Piedmont's assets and liabilities subject to these rate-setting provisions approximates the pre-acquisition carrying values and does not reflect any net valuation adjustments.
The significant assets and liabilities for which valuation adjustments were reflected within the purchase price allocation include the acquired equity method investments and long-term debt. The difference between the preliminary fair value and the pre-merger carrying values of long-term debt for regulated operations was recorded as a regulatory asset.
The excess of the purchase price over the estimated fair value of Piedmont's assets and liabilities on the acquisition date was recorded as goodwill. The goodwill reflects the value paid by Duke Energy primarily for establishing a broader, long-term strategic natural gas infrastructure platform, an improved risk profile and expected synergies resulting from the combined entities. See Note 11 for information related to the allocation of goodwill to Duke Energy’s reporting units.
Accounting Charges Related to the Acquisition
Duke Energy incurred pretax non-recurring transaction and integration costs associated with the acquisition of $439 million and $9 million for the years ended December 31, 2016 and 2015, respectively. Amounts recorded on the Consolidated Statements of Operations in 2016 include:
Interest expense of $234 million related to the acquisition financing, including realized losses on forward-starting interest rate swaps of $190 million. See Note 14 for additional information on the swaps.
Charges of $104 million related to commitments made in conjunction with the transaction, including charitable contributions and a one-time bill credit to Piedmont customers. $10 million was recorded as a reduction in Operating Revenues, with the remaining $94 million recorded within Operation, maintenance and other.
Other transaction and integration costs of $101 million recorded to Operation, maintenance and other, including professional fees and severance.
Pro Forma Financial Information
The following unaudited pro forma financial information reflects the combined results of operations of Duke Energy and Piedmont as if the merger each sharehad occurred as of Piedmont common stock issued and outstandingJanuary 1, 2015. The pro forma financial information does not include potential cost savings, intercompany revenues, Piedmont’s earnings from a certain equity method investment sold immediately prior to the closing will be converted automatically into the right to receive $60 in cash per share. In addition,merger or non-recurring transaction and integration costs incurred by Duke Energy will assume Piedmont's existing debt, which was approximately $1.9 billion at October 31, 2015, the end of Piedmont's most recent fiscal year.and Piedmont. The after-tax non-recurring transaction and integration costs incurred by Duke Energy expects to financeand Piedmont were $279 million and $19 million for the years ended December 31, 2016 and 2015, respectively.
This information has been presented for illustrative purposes only and is not necessarily indicative of the consolidated results of operations that would have been achieved or the future consolidated results of operations of Duke Energy.
 Years Ended December 31,
(in millions)20162015
Operating Revenues$23,504
$23,570
Net Income Attributable to Duke Energy Corporation2,442
2,877

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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Piedmont's Earnings
Piedmont's revenues and net income included in Duke Energy's Consolidated Statements of Operations for the year ended December 31, 2016, were $367 million and $20 million, respectively. Piedmont's revenues and net income for the year ended December 31, 2016 include the impact of non-recurring transaction costs of $10 million and $46 million, respectively.
Acquisition Related Financings and Other Matters
Duke Energy financed the Piedmont acquisition with a combination of debt and equity issuances and other cash sources. Assources, including:
$3.75 billion of long-term debt issued in August 2016.
$750 million borrowed under the $1.5 billion short-term loan facility in September 2016, which was repaid in December 31, 2015, Duke Energy entered into $9002016.
10.6 million shares of forward starting interest rate swaps to lockcommon stock issued in componentsOctober 2016 for net cash proceeds of interest rates for the expected financing. The change in the fair value of the swaps from inception to December 31, 2015, was not material. For additional information on the forward-starting swaps, see Note 14.approximately $723 million.
In connection with the Merger Agreement with Piedmont, Duke Energy entered into aThe $4.9 billion senior unsecured bridge financing facility (Bridge Facility) with Barclays Capital, Inc. (Barclays). The Bridge Facility, if drawn upon, may be used to (i) fund was terminated following the cash consideration for the transaction and (ii) pay certain fees and expenses in connection with the transaction. In November 2015, Barclays syndicated its commitment under the Bridge Facility to a broader group of lenders. Duke Energy does not expect to draw upon the Bridge Facility.

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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

The Federal Trade Commission (FTC) has granted early terminationissuance of the 30-day waiting period underlong-term debt. For additional information related to the federal Hart-Scott-Rodino Antitrust Improvements Act of 1976. On January 22, 2016, shareholders of Piedmont Natural Gas approved the company's acquisition by Duke Energy. On January 15, 2016, Duke Energy filed for approval of the transactiondebt and associated financing requests with the NCUC. On January 29, 2016, the NCUC approved the financing requests. On January 15, 2016, Duke Energyequity issuances, see Notes 6 and Piedmont filed a joint request with the Tennessee Regulatory Authority for approval of a change in control of Piedmont that will result from Duke Energy's acquisition of Piedmont. In that request, Duke Energy and Piedmont requested that the Authority approve the change in control on or before April 30, 2016. Subject to receipt of required regulatory approvals and meeting closing conditions, Duke Energy and Piedmont target a closing by the end of 2016.
On December 11, 2015, Duke Energy Kentucky filed a declaratory request with the KPSC seeking a finding that the transaction does not constitute a change in control of Duke Energy Kentucky requiring KPSC approval. Duke Energy also presented the transaction for information before the PSCSC on January 13, 2016.
The Merger Agreement contains certain termination rights for both Duke Energy and Piedmont, and provides that, upon termination of the Merger Agreement under specified circumstances, Duke Energy would be required to pay a termination fee of $250 million to Piedmont and Piedmont would be required to pay Duke Energy a termination fee of $125 million.
See Note 4 for18, respectively. For additional information regarding Duke EnergyEnergy's and Piedmont's joint investment in Atlantic Coast Pipeline, LLC (ACP)., see Note 4.
Purchase of NCEMPA's Generation
On July 31, 2015, Duke Energy Progress completed the purchase of North Carolina Eastern Municipal Power Agency’s (NCEMPA) ownership interests in certain generating assets, fuel and spare parts inventory jointly owned with and operated by Duke Energy Progress for approximately $1.25 billion. This purchase was accounted for as an asset acquisition. The purchase resulted in the acquisition of a total of approximately 700 megawatts (MW) of generating capacity at Brunswick Nuclear Plant (Brunswick), Shearon Harris Nuclear Plant (Harris), Mayo Steam Plant and Roxboro Steam Plant. In connection with this transaction, Duke Energy Progress and NCEMPA entered into a 30-year wholesale power agreement, whereby Duke Energy Progress will sell power to NCEMPA to continue to meet the needs of NCEMPA customers.
The purchase price exceedsexceeded the historical carrying value of the acquired assets by $350 million, which was recognized as an acquisition adjustment and recorded in property, plant and equipment. Duke Energy Progress received FERC approval for inclusion of the acquisition adjustment in wholesale power formula rates on December 9, 2014. On July 8, 2015, the NCUC adopted a new rule that enablesestablished a rider mechanism for recovery ofin North Carolina to recover the costs to acquire, operate and maintain interests in the assets purchased as allocated to Duke Energy Progress'its North Carolina retail operations, including the purchase acquisition adjustment. Pursuant toadjustment, and included the NCUC's approval, purchase acquisition adjustment in wholesale power formula rates.
Duke Energy Progress implemented a rider to recover costs associated with the NCEMPA asset acquisition effective December 1, 2015. Duke Energy Progress also received an order from the PSCSC to defer the recovery of the South Carolina retail allocated costs of the asset purchased until the Company'sDuke Energy Progress' next general rate case, which was filed in July 2016. In October 2016, Duke Energy Progress, the Office of Regulatory Staff (ORS) and intervenors entered into a settlement agreement that provides for recovery of the historical carrying value of the South Carolina allocated purchased costs of the transaction. The settlement agreement was approved by the PSCSC in December 2016. See Note 4 for additional information on the South Carolina rate case.
Assets Acquired
The ownership interests in generating assets acquired are subject to rate-setting authority of the FERC, NCUC and PSCSC and accordingly, the assets are recorded at historical cost. The assets acquired are presented in the following table.
(in millions) 
Inventory$56
Net property, plant and equipment845
Total assets901
Acquisition adjustment, recorded within property, plant and equipment350
Total purchase price$1,251
In connection with the acquisition, Duke Energy Progress acquired NCEMPA's nuclear decommissioning trust fundNDTF assets of $287 million and assumed asset retirement obligationsAROs of $204 million associated with NCEMPA's interest in the generation assets. The nuclear decommissioning trust fundNDTF and the asset retirement obligationAROs are subject to regulatory accounting treatment.
DISPOSITIONS
Potential The following table summarizes the (Loss) Income from Discontinued Operations, net of tax recorded on Duke Energy's Consolidated Statements of Operations:
 Years Ended December 31,
(in millions)2016
 2015
 2014
International Energy Disposal Group$(534) $157
 $(73)
Midwest Generation Disposal Group36
 33
 (524)
Other(a)
90
 (13) (52)
(Loss) Income from Discontinued Operations, net of tax$(408) $177
 $(649)
(a)Relates to previously sold businesses not related to the Disposal Groups. The amount for 2016 represents an income tax benefit resulting from immaterial out of period deferred tax liability adjustments. The amounts for 2015 and 2014 include indemnifications provided for certain legal, tax and environmental matters and foreign currency translation adjustments.

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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Sale of International Energy
OnIn February 18, 2016, Duke Energy announced it had initiated a process to divest theits International Energy business segment,businesses, excluding the equity method investment in National Methanol Company (NMC).NMC (the International Disposal Group), and in October 2016, announced it had entered into two separate purchase and sale agreements to execute the divestiture. Both sales closed in December of 2016, resulting in available cash proceeds of $1.9 billion, excluding transaction costs. Proceeds were primarily used to reduce Duke Energy isholding company debt. Existing favorable tax attributes result in the preliminary stage and there have been no binding or non-binding offers requested or submitted.immediate U.S. federal-level cash tax impacts. Details of each transaction are as follows:
On December 20, 2016, Duke Energy can provide no assurance that this process will resultclosed on the sale of its ownership interests in a transactionbusinesses in Argentina, Chile, Ecuador, El Salvador, Guatemala and there is no specific timelinePeru to I Squared Capital. The assets sold included approximately 2,230 MW of hydroelectric and natural gas generation capacity, transmission infrastructure and natural gas processing facilities. I Squared Capital purchased the businesses for executionan enterprise value of a potential transaction. Proceeds from a successful exit would be used by$1.2 billion.
On December 29, 2016, Duke Energy closed on the sale of its Brazilian business, which included approximately 2,090 MW of hydroelectric generation capacity, to fundCTG for an enterprise value of $1.2 billion. With the operationsclosing of the CTG deal, Duke Energy finalized its exit from the Latin American market.
Assets Held For Sale and growthDiscontinued Operations
As a result of domestic businesses. If the potential of a sale were to progress, it could result in classification oftransactions, the International EnergyDisposal Group was classified as assets held for sale and as discontinued operations in the fourth quarter of 2016. Interest expense directly associated with the International Disposal Group was allocated to discontinued operations. No interest from corporate level debt was allocated to discontinued operations.
The following table presents the carrying values of the major classes of Assets held for sale and Liabilities associated with assets held for sale included in the Consolidated Balance Sheets. As a discontinued operation. Asresult of Duke Energy closing both transactions in December 2016, there are no Assets held for sale or Liabilities associated with assets held for sale as of December 31, 2016.
(in millions) December 31, 2015
Current assets held for sale  
Cash and cash equivalents $474
Receivables, net 188
Inventory 65
Other 19
   Total current assets held for sale 746
Noncurrent assets held for sale  
Property, Plant and Equipment  
Cost 2,859
Accumulated depreciation and amortization (930)
   Net property, plant and equipment 1,929
Goodwill 271
Other 213
Total noncurrent assets held for sale 2,413
Total assets held for sale $3,159
Current liabilities associated with assets held for sale  
Accounts payable $51
Taxes accrued 60
Current maturities of long-term debt 48
Other 120
   Total current liabilities associated with assets held for sale 279
Noncurrent liabilities associated with assets held for sale  
Long-Term Debt 653
Deferred income taxes 157
Other 90
   Total noncurrent liabilities associated with assets held for sale 900
Total liabilities associated with assets held for sale $1,179
The value of goodwill increased by $7 million from December 31, 2015 through the date of sale as a result of changes in foreign currency exchanges rates. At the time of the disposition, the International Disposal Group included goodwill of $278 million.

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DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

The following table presents the results of the International Disposal Group which are included in (Loss) Income from Discontinued Operations, net of tax in Duke Energy's Consolidated Statements of Operations.
 Years Ended December 31,
(in millions)2016
 2015
 2014
Operating Revenues$988
 $1,088
 $1,417
Fuel used in electric generation and purchased power227
 306
 486
Cost of natural gas43
 53
 63
Operation, maintenance and other341
 334
 352
Depreciation and amortization(a)
62
 92
 97
Property and other taxes15
 7
 9
Impairment charges (b)
194
 13
 
(Loss) Gains on Sales of Other Assets and Other, net(3) 6
 6
Other Income and Expenses, net58
 23
 47
Interest Expense82
 85
 93
Pretax loss on disposal(c)
(514) 
 
(Loss) Income before income taxes(d)
(435)
227

370
Income tax expense(e)(f)
99
 70
 443
(Loss) Income from discontinued operations of the International Disposal Group$(534)
$157

$(73)
(a)Upon meeting the criteria for assets held for sale, beginning in the fourth quarter of 2016 depreciation expense was ceased.
(b)In conjunction with the advancements of marketing efforts during 2016, Duke Energy performed recoverability tests of the long-lived asset groups of International Energy. As a result, Duke Energy determined the carrying value of certain assets in Central America was not fully recoverable and recorded a pretax impairment charge of $194 million. The charge represents the excess of carrying value over the estimated fair value of the assets, which was based on a Level 3 Fair Value measurement that was primarily determined from the income approach using discounted cash flows but also considered market information obtained in 2016.
(c)The pretax loss on disposal includes the recognition of cumulative foreign currency translation losses of $620 million as of the disposal date. See the Consolidated Statements of Changes in Equity for additional information.
(d)Pretax (Loss) Income attributable to Duke Energy Corporation was $(445) million, $221 million and $360 million for the years ended December 31, 2016, 2015 and 2014, respectively.
(e)2016 amount includes $126 million of income tax expense on the disposal, which primarily reflects in-country taxes incurred as a result of the sale. The after-tax loss on disposal was $640 million.
(f)
2016 amount includes an income tax benefit of $95 million and 2014 amount includes an income tax charge of $373 million related to historical undistributed foreign earnings. See Note 22, "Income Taxes," for additional information.
Duke Energy segment hadhas elected not to separately disclose discontinued operations on the Consolidated Statements of Cash Flows. The following table summarizes Duke Energy's cash flows from discontinued operations related to the International Disposal Group.
 Years Ended December 31,
(in millions)2016
 2015
 2014
Cash flows provided by (used in):     
Operating activities$204
 $248
 $339
Investing activities(434) 177
 111
Other Sale Related Matters
Duke Energy will provide transition services to CTG and I Squared for a carrying value ofperiod not to extend beyond March 2017 and September 2017, respectively. In addition, Duke Energy will reimburse CTG and I Squared for all tax obligations arising from the period preceding consummation on the transactions, totaling approximately $2.7 billion, adjusted$78 million. Duke Energy has not recorded any other liabilities, contingent liabilities or indemnifications related to include the cumulative foreign currency translation losses currently classified as accumulated other comprehensive income.International Disposal Group.
Midwest Generation Exit
Duke Energy, through indirect subsidiaries, completed the sale of the nonregulated Midwest generation business and Duke Energy Retail Sales (collectively, theGeneration Disposal Group)Group to a subsidiary of Dynegy on April 2, 2015, for approximately $2.8 billion in cash. The nonregulated Midwest generation business included generation facilities with approximately 5,900 MW of owned capacity located in Ohio, Pennsylvania and Illinois. On April 1, 2015, prior to the sale, Duke Energy Ohio distributed its indirect ownership interest in the nonregulated Midwest generation business to a subsidiary of Duke Energy Corporation.
Duke Energy utilized a revolving credit agreement (RCA) to support the operations of the nonregulated Midwest generation business. Duke Energy Ohio had a power purchase agreement with the Midwest Generation Disposal Group for a portion of its standard service offer (SSO) supply requirement. The agreement and the SSO expired in May 2015.

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DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

The assets and liabilities of the Disposal Group prior to the sale were included in the Commercial Portfolio (formerly Commercial Power) segment and classified as held for sale in Duke Energy's and Duke Energy Ohio's Consolidated Balance Sheet at December 31, 2014. The following table presents information at the time of the sale related to the Duke Energy Ohio generation plants included in the Disposal Group.
       Total MW
 Owned MW
 Ownership
FacilityPlant Type Primary Fuel Location 
Capacity(d)

 
Capacity(d)

 Interest
Stuart(a)(c)
Fossil Steam Coal OH 2,308
 900
 39%
Zimmer(a)
Fossil Steam Coal OH 1,300
 605
 46.5%
Hanging RockCombined Cycle Gas OH 1,226
 1,226
 100%
Miami Fort (Units 7 and 8)(b)
Fossil Steam Coal OH 1,020
 652
 64%
Conesville(a)(c)
Fossil Steam Coal OH 780
 312
 40%
WashingtonCombined Cycle Gas OH 617
 617
 100%
FayetteCombined Cycle Gas PA 614
 614
 100%
Killen(b)(c)
Fossil Steam Coal OH 600
 198
 33%
LeeCombustion Turbine Gas IL 568
 568
 100%
Dick's CreekCombustion Turbine Gas OH 136
 136
 100%
Miami FortCombustion Turbine Oil OH 56
 56
 100%
Total Midwest Generation      9,225
 5,884
  
(a)Jointly owned with American Electric Power Generation Resources and The Dayton Power and Light Company.
(b)Jointly owned with The Dayton Power and Light Company.
(c)Not operated by Duke Energy Ohio.
(d)Total MW capacity is based on summer capacity.
The Disposal Group also included a retail sales business owned by Duke Energy. In the second quarter of 2014, Duke Energy Ohio removed Ohio Valley Electric Corporation's (OVEC) purchase power agreement from the Disposal Group as it no longer intended to sell it with the Disposal Group.
The results of operations of the Midwest Generation Disposal Group prior to the date of sale are classified as discontinued operations in the accompanying Consolidated Statements of Operations and Comprehensive Income.Operations. Interest expense associated with the RCA was allocated to discontinued operations. No other interest expense related to corporate level debt was allocated to discontinued operations. Certain immaterial costs that were eliminated as a result of the sale remained in continuing operations. The following table presentssummarizes the results ofMidwest Generation Disposal Group activity recorded within discontinued operations.
Duke Energy
 Years Ended December 31,
(in millions)2015

2014

2013
Operating Revenues$543
 $1,748
 $1,885
Loss on disposition(a)
(45) (929) 
      
Income (loss) before income taxes(b)
$59
 $(818) $141
Income tax expense (benefit)26
 (294) 56
Income (loss) from discontinued operations of the Disposal Group33
 (524) 85
Other, net of tax(c)
(13) (52) 1
Income (Loss) From Discontinued Operations, net of tax$20
 $(576) $86
 Duke Energy Duke Energy Ohio
 Years Ended December 31, Years Ended December 31,
(in millions)2016
 2015
 2014
 2016
 2015
 2014
Operating Revenues$
 $543
 $1,748
 $
 $412
 $1,299
Pretax Loss on disposal(a)

 (45) (929) 
 (52) (959)
            
Income (loss) before income taxes(b)
$
 $59
 $(818) $
 $44
 $(863)
Income tax (benefit) expense(c)
(36) 26
 (294) (36) 21
 (300)
Income (loss) from discontinued operations$36
 $33
 $(524) $36
 $23
 $(563)
(a)The Loss on dispositiondisposal includes impairments recorded to adjust the carrying amount of the assets to the estimated fair value of the business, based on the selling price to Dynegy less cost to sell.
(b)The Income (loss) before income taxes includes2015 amounts include the pretax impact of an $81 million charge for the settlement agreement reached in a lawsuit related to the Midwest Generation Disposal Group for the year ended December 31, 2015.Group. Refer to Note 5 for further information related toabout the lawsuit.
(c)Relates to discontinued operations2016 amounts result from immaterial out of businesses not related to the Disposal Group. Amounts include indemnifications provided for certain legal,period deferred tax and environmental matters, and foreign currency translationliability adjustments.
3. BUSINESS SEGMENTS
Duke Energy evaluates segment performance based on segment income. Segment income is defined as income from continuing operations net of income attributable to noncontrolling interests. Segment income, as discussed below, includes intercompany revenues and expenses that are eliminated in the Consolidated Financial Statements. Certain governance costs are allocated to each segment. In addition, direct interest expense and income taxes are included in segment income.
Operating segments are determined based on information used by the chief operating decision-maker in deciding how to allocate resources and evaluate the performance of the business.
Products and services are sold between affiliate companies and reportable segments of Duke Energy at cost. Segment assets as presented in the tables that follow exclude all intercompany assets.
Duke Energy
Due to the Piedmont acquisition and the sale of International Energy in the fourth quarter of 2016, Duke Energy's segment structure has been realigned to include the following segments: Electric Utilities and Infrastructure, Gas Utilities and Infrastructure and Commercial Renewables. Prior period information has been recast to conform to the current segment structure. See Note 2 for further information on the Piedmont and International Energy transactions.
Electric Utilities and Infrastructure includes Duke Energy's regulated electric utilities in the Carolinas, Florida and the Midwest. The regulated electric utilities conduct operations through the Subsidiary Registrants that are substantially all regulated and, accordingly, qualify for regulatory accounting treatment. Electric Utilities and Infrastructure also includes Duke Energy's commercial electric transmission infrastructure investments.
Gas Utilities and Infrastructure contains Piedmont, Duke Energy's natural gas local distribution companies in Ohio and Kentucky, and Duke Energy's natural gas storage and pipeline investments. Gas Utilities and Infrastructure's operations are substantially all regulated and, accordingly, qualify for regulatory accounting treatment.
Commercial Renewables is primarily comprised of nonregulated utility scale wind and solar generation assets located throughout the U.S.
In December 2016, Duke Energy closed on the sale of the International Disposal Group, which includes the former International Energy business segment, excluding the equity method investment in NMC. Results of the International Disposal Group are presented within Discontinued Operations for all periods and results of NMC are presented within Other for all periods, as described below. See Note 2, "Acquisitions and Dispositions" for additional information related to the sale.

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DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

The remainder of Duke Energy’s operations is presented as Other, which is primarily comprised of unallocated corporate interest expense, unallocated corporate costs, contributions to the Duke Energy Foundation and the operations of Duke Energy’s wholly owned captive insurance subsidiary, Bison Insurance Company Limited (Bison). As discussed above, Other also includes Duke Energy's 25 percent interest in NMC, a large regional producer of methyl tertiary butyl ether (MTBE) located in Saudi Arabia. The investment in NMC is accounted for under the equity method of accounting.
 Year Ended December 31, 2016
 Electric
 Gas
   Total
      
 Utilities and
 Utilities and
 Commercial
 Reportable
      
(in millions)Infrastructure
 Infrastructure
 Renewables
 Segments
 Other
 Eliminations
 Total
Unaffiliated Revenues$21,336
 $875
 $484
 $22,695
 $48
 $
 $22,743
Intersegment Revenues30
 26
 
 56
 69
 (125) 
Total Revenues$21,366
 $901
 $484
 $22,751
 $117
 $(125) $22,743
Interest Expense$1,136
 $46
 $53
 $1,235
 $693
 $(12) $1,916
Depreciation and amortization2,897
 115
 130
 3,142
 152
 
 3,294
Equity in earnings (losses) of unconsolidated affiliates(a)
5
 19
 (82) (58) 43
 
 (15)
Income tax expense (benefit)1,672
 90
 (160) 1,602
 (446) 
 1,156
Segment income (loss)(b)(c)
3,040
 152
 23
 3,215
 (645) 1
 2,571
Add back noncontrolling interest component  
   
   
   
   
   
 7
Loss from discontinued operations, net of tax(d)
  
   
   
   
   
   
 (408)
Net income  
   
   
   
   
   
 $2,170
Capital investments expenditures and acquisitions(e)
$6,649
 $5,519
 $857
 $13,025
 $190
 $
 $13,215
Segment assets114,993
 10,760
 4,377
 130,130
 2,443
 188
 132,761
(a)    Commercial Renewables includes a pretax impairment charge of $71 million. See Note 12 for additional information.
(b)Other includes $329 million of after-tax costs to achieve mergers. Refer to Note 2 for additional information on costs related to the Piedmont merger.
(c)Other includes after-tax charges of $57 million related to cost savings initiatives. Refer to Note 19 for further information.
(d)Includes a loss on sale of the International Disposal Group. Refer to Note 2 for further information.
(e)Other includes $26 million of capital investments expenditures related to the International Disposal Group. Gas Utilities and Infrastructure includes the Piedmont acquisition of $5 billion. Refer to Note 2 for more information on the Piedmont acquisition.
 Year Ended December 31, 2015
 Electric
 Gas
   Total
      
 Utilities and
 Utilities and
 Commercial
 Reportable
      
(in millions)Infrastructure
 Infrastructure
 Renewables
 Segments
 Other
 Eliminations
 Total
Unaffiliated Revenues$21,489
 $536
 $286
 $22,311
 $60
 $
 $22,371
Intersegment Revenues32
 5
 
 37
 75
 (112) 
Total Revenues$21,521
 $541
 $286
 $22,348
 $135
 $(112) $22,371
Interest Expense$1,074
 $25
 $44
 $1,143
 $393
 $(9) $1,527
Depreciation and amortization2,735
 79
 104
 2,918
 135
 
 3,053
Equity in earnings (losses) of unconsolidated affiliates(2) 1
 (6) (7) 76
 
 69
Income tax expense (benefit)1,602
 44
 (128) 1,518
 (262) 
 1,256
Segment income (loss)(a)(b)(c)
2,819
 73
 52
 2,944
 (299) 
 2,645
Add back noncontrolling interest component  
   
   
   
   
   
 9
Income from discontinued operations, net of tax(d)
  
   
   
   
   
   
 177
Net income  
   
   
   
   
   
 $2,831
Capital investments expenditures and acquisitions(e)
$6,852
 $234
 $1,019
 $8,105
 $258
 $
 $8,363
Segment assets(f)
109,097
 2,637
 3,861
 115,595
 5,373
 188
 121,156

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DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

(a)Electric Utilities and Infrastructure includes an after-tax charge of $58 million related to the Edwardsport settlement. Refer to Note 4 for further information.
(b)    Other includes $60 million of after-tax costs to achieve mergers.
(c)Other includes after-tax charges of $77 million related to cost savings initiatives. Refer to Note 19 for further information.
(d)Includes the impact of a settlement agreement reached in a lawsuit related to the Midwest Generation Disposal Group. Refer to Note 5 for further information related to the lawsuit and Note 2 for further information on discontinued operations.
(e)Other includes capital investment expenditures of $45 million related to the International Disposal Group.
(f)Other includes Assets Held for Sale balances related to the International Disposal Group. Refer to Note 2 for further information.
 Year Ended December 31, 2014
 Electric
 Gas
   Total
      
 Utilities and
 Utilities and
 Commercial
 Reportable
      
(in millions)Infrastructure
 Infrastructure
 Renewables
 Segments
 Other
 Eliminations
 Total
Unaffiliated Revenues$21,655
 $573
 $235
 $22,463
 $46
 $
 $22,509
Intersegment Revenues36
 5
 1
 42
 70
 (112) 
Total Revenues$21,691
 $578
 $236
 $22,505
 $116
 $(112) $22,509
Interest Expense$1,057
 $37
 $50
 $1,144
 $409
 $(24) $1,529
Depreciation and amortization2,686
 73
 90
 2,849
 120
 
 2,969
Equity in earnings (losses) of unconsolidated affiliates(1) 
 8
 7
 123
 
 130
Income tax expense (benefit)1,582
 45
 (88) 1,539
 (314) 
 1,225
Segment income (loss) (a)(b)
2,714
 80
 53
 2,847
 (332) 18
 2,533
Add back noncontrolling interest component  
   
   
   
   
   
 5
Loss from discontinued operations, net of tax(c)
  
   
   
   
   
   
 (649)
Net income  
   
   
   
   
   
 $1,889
Capital investments expenditures and acquisitions(d)
$4,642
 $121
 $514
 $5,277
 $251
 $
 $5,528
Segment assets(e)
104,119
  2,512
 2,981
 109,612
 10,755
 190
 120,557
(a)Other includes a $94 million pretax impairment charge related to Ohio Valley Electric Corporation (OVEC) and costs to achieve mergers.
(b)Electric Utilities and Infrastructure includes pretax charges of $102 million related to the criminal investigation of the Dan River coal ash spill. See Note 5 for additional information.
(c)Includes an impairment of the Midwest Generation Disposal Group. Refer to Note 2 for further information.
(d)Other includes $67 million of capital investments expenditures and acquisitions of the International Disposal Group.
(e)Other includes Assets Held for Sale balances related to the International Disposal Group and Midwest Generation Disposal Group. Refer to Note 2 for further information.
Geographical Information
For the years ended December 31, 2016, 2015 and 2014, all assets and revenues are within the U.S.

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DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Products and Services
The following table summarizes revenues of the reportable segments by type.
 Retail
 Wholesale
 Retail
   Total
(in millions)Electric
 Electric
 Natural Gas
 Other
 Revenues
2016        
Electric Utilities and Infrastructure$18,338
 $2,095
 $
 $933
 $21,366
Gas Utilities and Infrastructure
 
 871
 30
 901
Commercial Renewables
 303
 
 181
 484
Total Reportable Segments$18,338
 $2,398
 $871
 $1,144
 $22,751
2015        
Electric Utilities and Infrastructure$18,695
 $2,014
 $
 $812
 $21,521
Gas Utilities and Infrastructure
 
 546
 (5) 541
Commercial Renewables
 245
 
 41
 286
Total Reportable Segments$18,695
 $2,259
 $546
 $848
 $22,348
2014        
Electric Utilities and Infrastructure$19,007
 $1,879
 $
 $805
 $21,691
Gas Utilities and Infrastructure
 
 571
 7
 578
Commercial Renewables
 236
 
 
 236
Total Reportable Segments$19,007
 $2,115
 $571

$812
 $22,505
Duke Energy Ohio
 Years Ended December 31,
(in millions)2015
 2014
 2013
Operating Revenues$412
 $1,299
 $1,503
Loss on disposition(a)
(52) (959) 
      
Income (loss) before income taxes(b)
$44
 $(863) $67
Income tax expense (benefit)21
 (300) 32
Income (Loss) From Discontinued Operations, net of tax$23
 $(563) $35
(a)The Loss on disposition includes impairments recorded to adjust the carrying amount of the assets to the estimated fair value of the business, based on the selling price to Dynegy less cost to sell.
(b)The Income (loss) before income taxes includes the pretax impact of an $81 million charge for the settlement agreement reached in a lawsuit related to the Disposal Group for the year ended December 31, 2015, respectively. Refer to Note 5 for further information related to the lawsuit.
Commercial Portfolio has a revolving credit agreement (RCA) which was used to support the operations of the nonregulated Midwest generation business. Interest expense associated with the RCA was allocated to discontinued operations. No other interest expense related to corporate level debt was allocated to discontinued operations.
Duke Energy Ohio had a power purchase agreement with the Disposal Group for a portion of its standard service offer (SSO) supply requirement. The agreement and the SSO expired in May 2015. Duke Energy received reimbursement for transition services provided to Dynegy through December 2015. The continuing cash flows were not considered direct cash flows or material. Duke Energy or Duke Energy Ohio did not significantly influence the operations of the Disposal Group during the transition service period.
See Notes 4 and 5 for a discussion of contingencies related to the Disposal Group that are retained by Duke Energy Ohio subsequent to the sale.
3. BUSINESS SEGMENTS
Duke Energy evaluates segment performance based on segment income. Segment income is defined as income from continuing operations net of income attributable to noncontrolling interests. Segment income, as discussed below, includes intercompany revenues and expenses that are eliminated in the Consolidated Financial Statements. Certain governance costs are allocated to each segment. In addition, direct interest expense and income taxes are included in segment income.
Operating segments are determined based on information used by the chief operating decision maker in deciding how to allocate resources and evaluate the performance.
Products and services are sold between affiliate companies and reportable segments of Duke Energy at cost. Segment assets as presented in the tables that follow exclude all intercompany assets.
Duke Energy
Duke Energy has the following reportable operating segments: Regulated Utilities, International Energy and Commercial Portfolio.
Regulated Utilities conducts electric and natural gas operations that are substantially all regulated and, accordingly, qualify for regulatory accounting treatment. These operations are primarily conducted through the Subsidiary Registrants and are subject to the rules and regulations of the FERC, NRC, NCUC, PSCSC, FPSC, PUCO, IURC and KPSC.
International Energy principally operates and manages power generation facilities and engages in sales and marketing of electric power, natural gas and natural gas liquids outside the U.S. Its activities principally target power generation in Latin America. Additionally, International Energy owns a 25 percent interest in NMC, a large regional producer of methyl tertiary butyl ether (MTBE) located in Saudi Arabia. The investment in NMC is accounted for under the equity method of accounting. On February 4, 2016, Duke Energy announced it had initiated a process to divest its International Energy business segment, excluding the investment in NMC. See Note 2 for further information.
Commercial Portfolio builds, develops and operates wind and solar renewable generation and energy transmission projects throughout the U.S. The segment was renamed as a result of the sale of the Disposal Group, as discussed in Note 2. For periods subsequent to the sale, beginning in the second quarter of 2015, certain immaterial results of operations and related assets previously presented in the Commercial Portfolio segment are presented in Regulated Utilities and Other.

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PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

The remainder of Duke Energy’s operations is presented as Other, which is primarily comprised of unallocated corporate interest expense, unallocated corporate costs, contributions to the Duke Energy Foundation and the operations of Duke Energy’s wholly owned captive insurance subsidiary, Bison Insurance Company Limited (Bison).On December 31, 2013, Duke Energy sold its interest in DukeNet Communications Holdings, LLC (DukeNet) to Time Warner Cable, Inc.
 Year Ended December 31, 2015
       Total
      
 Regulated
 International
 Commercial
 Reportable
      
(in millions)Utilities
 Energy
 Portfolio
 Segments
 Other
 Eliminations
 Total
Unaffiliated Revenues$22,024
 $1,088
 $301
 $23,413
 $46
 $
 $23,459
Intersegment Revenues38
 
 
 38
 77
 (115) 
Total Revenues$22,062
 $1,088
 $301
 $23,451
 $123
 $(115) $23,459
Interest Expense$1,097
 $85
 $44
 $1,226
 $393
 $(6) $1,613
Depreciation and amortization2,814
 92
 104
 3,010
 134
 
 3,144
Equity in earnings of unconsolidated affiliates(4) 74
 (3) 67
 2
 
 69
Income tax expense (benefit)1,647
 74
 (92) 1,629
 (303) 
 1,326
Segment income (loss)(a)(b)(c)(d)
2,893
 225
 4
 3,122
 (322) (4) 2,796
Add back noncontrolling interest component  
   
   
   
   
   
 15
Income from discontinued operations, net of tax(e)
  
   
   
   
   
   
 20
Net income  
   
   
   
   
   
 $2,831
Capital investments expenditures and acquisitions$6,974
 $45
 $1,131
 $8,150
 $213
 $
 $8,363
Segment Assets111,562
 3,271
 4,010
 118,843
 2,125
 188
 121,156
(a)Regulated Utilities includes an after-tax charge of $58 million related to the Edwardsport settlement. Refer to Note 4 for further information.
(b)Commercial Portfolio includes state tax expense of $41 million, resulting from changes to state apportionment factors due to the sale of the Disposal Group, that does not qualify for discontinued operations. Refer to Note 2 for further information related to the sale.
(c)    Other includes $60 million of after-tax costs to achieve mergers.
(d)Other includes an after-tax charge of $77 million related to cost savings initiatives. Refer to Note 19 for further information related to the cost savings initiatives.
(e)Includes after-tax impact of $53 million for the settlement agreement reached in a lawsuit related to the Disposal Group. Refer to Note 5 for further information related to the lawsuit.

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PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

 Year Ended December 31, 2014
       Total
      
 Regulated
 International
 Commercial
 Reportable
      
(in millions)Utilities
 Energy
 Portfolio
 Segments
 Other
 Eliminations
 Total
Unaffiliated Revenues$22,228
 $1,417
 $255
 $23,900
 $25
 $
 $23,925
Intersegment Revenues43
 
 
 43
 80
 (123) 
Total Revenues$22,271
 $1,417
 $255
 $23,943
 $105
 $(123) $23,925
Interest Expense$1,093
 $93
 $58
 $1,244
 $400
 $(22) $1,622
Depreciation and amortization2,759
 97
 92
 2,948
 118
 
 3,066
Equity in earnings of unconsolidated affiliates(3) 120
 10
 127
 3
 
 130
Income tax expense (benefit)(a)
1,628
 449
 (171) 1,906
 (237) 
 1,669
Segment income (loss)(b)(c)(d)
2,795
 55
 (55) 2,795
 (334) (10) 2,451
Add back noncontrolling interest component  
   
   
   
   
   
 14
Loss from discontinued operations, net of tax  
   
   
   
   
   
 (576)
Net income  
   
   
   
   
   
 $1,889
Capital investments expenditures and acquisitions$4,744
 $67
 $555
 $5,366
 $162
 $
 $5,528
Segment Assets106,574
 5,093
 6,278
 117,945
 2,423
 189
 120,557
(a)International Energy includes a tax adjustment of $373 million related to deferred tax impact resulting from the decision to repatriate all cumulative historical undistributed foreign earnings. See Note 22 for additional information.
(b)Commercial Portfolio recorded a $94 million pretax impairment charge related to OVEC.
(c)Other includes costs to achieve mergers.
(d)Regulated Utilities includes an increase in the litigation reserve related to the criminal investigation of the Dan River coal ash spill. See Note 5 for additional information.
 Year Ended December 31, 2013
       Total
      
 Regulated
 International
 Commercial
 Reportable
      
(in millions)Utilities
 Energy
 Portfolio
 Segments
 Other
 Eliminations
 Total
Unaffiliated Revenues(a)(b)(c)
$20,871
 $1,546
 $254
 $22,671
 $85
 $
 $22,756
Intersegment Revenues39
 
 6
 45
 90
 (135) 
Total Revenues$20,910
 $1,546
 $260
 $22,716
 $175
 $(135) $22,756
Interest Expense$986
 $86
 $61
 $1,133
 $416
 $(6) $1,543
Depreciation and amortization2,323
 100
 110
 2,533
 135
 
 2,668
Equity in earnings of unconsolidated affiliates(1) 110
 7
 116
 6
 
 122
Income tax expense (benefit)1,522
 166
 (148) 1,540
 (335) 
 1,205
Segment income (loss) (a)(b)(c)(d)(e)(f)(g)
2,504
 408
 (88) 2,824
 (238) (12) 2,574
Add back noncontrolling interest component  
   
   
   
   
   
 16
Income from discontinued operations, net of tax  
   
   
   
   
   
 86
Net income  
   
   
   
   
   
 $2,676
Capital investments expenditures and acquisitions$5,049
 $67
 $268
 $5,384
 $223
 $
 $5,607
Segment Assets99,884
  4,998
 6,955
 111,837
 2,754
 188
 114,779
(a)In May 2013, the PUCO approved a Duke Energy Ohio settlement agreement that provides for a net annual increase in electric distribution revenues beginning in May 2013. This rate increase impacts Regulated Utilities.
(b)In June 2013, NCUC approved a Duke Energy Progress settlement agreement that included an increase in rates in the first year beginning in June 2013. This rate increase impacts Regulated Utilities.
(c)In September 2013, Duke Energy Carolinas implemented revised customer rates approved by the NCUC and the PSCSC. These rate increases impact Regulated Utilities.

130


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

(d)Regulated Utilities recorded an impairment charge related to Duke Energy Florida's Crystal River Unit 3. See Note 4 for additional information.
(e)Regulated Utilities recorded an impairment charge related to the letter Duke Energy Progress filed with the NRC requesting the NRC to suspend its review activities associated with the combined construction and operating license (COL) at the Harris site. Regulated Utilities also recorded an impairment charge related to the write-off of the wholesale portion of the Levy investments at Duke Energy Florida in accordance with the 2013 Settlement. See Note 4 for additional information.
(f)Other includes costs to achieve mergers.
(g)Other includes gain from the sale of Duke Energy's ownership interest in DukeNet. See Note 12 for additional information on the sale of DukeNet.
Geographical Information
(in millions)U.S.
 
Latin America(a)

 Consolidated
2015        
Consolidated revenues$22,371
 $1,088
 $23,459
Consolidated long-lived assets87,552
 2,012
 89,564
2014        
Consolidated revenues$22,508
 $1,417
 $23,925
Consolidated long-lived assets80,709
 2,458
 83,167
2013        
Consolidated revenues$21,211
 $1,545
 $22,756
Consolidated long-lived assets78,581
 2,781
 81,362
(a)Change in amounts of long-lived assets in Latin America includes foreign currency translation adjustments on property, plant and equipment and other long-lived asset balances.
Products and Services
The following table summarizes revenues of the reportable segments by type.
 Retail
 Wholesale
 Retail
 Wholesale
   Total
(in millions)Electric
 Electric
 Natural Gas
 Natural Gas
 Other
 Revenues
2015          
Regulated Utilities$18,695
 $2,014
 $546
 $
 $807
 $22,062
International Energy
 1,025
 
 63
 
 1,088
Commercial Portfolio
 260
 
 
 41
 301
Total Reportable Segments$18,695
 $3,299
 $546

$63
 $848
 $23,451
2014          
Regulated Utilities$19,007
 $1,879
 $571
 $
 $814
 $22,271
International Energy
 1,326
 
 91
 
 1,417
Commercial Portfolio
 255
 
 
 
 255
Total Reportable Segments$19,007
 $3,460
 $571

$91
 $814
 $23,943
2013          
Regulated Utilities$17,837
 $1,720
 $506
 $
 $847
 $20,910
International Energy
 1,447
 
 99
 
 1,546
Commercial Portfolio
 260
 
 
 
 260
Total Reportable Segments$17,837
 $3,427
 $506

$99

$847
 $22,716
Duke Energy Ohio
Duke Energy Ohio hadhas two reportable operating segments, RegulatedElectric Utilities and Commercial Portfolio, prior to the sale of the nonregulated Midwest generation business. As a result of the sale discussed in Note 2, Commercial Portfolio no longer qualifies as a Duke Energy Ohio reportable operating segment. Therefore, for periods subsequent to the sale, beginning in the second quarter of 2015, all of the remaining assetsInfrastructure and related results of operations previously presented in Commercial Portfolio are presented in RegulatedGas Utilities and Other.Infrastructure.
RegulatedElectric Utilities and Infrastructure transmits and distributes electricity in portions of Ohio and generates, distributes and sells electricity in portions of Kentucky. RegulatedGas Utilities alsoand Infrastructure transports and sells natural gas in portions of Ohio and northern Kentucky. It conducts operations primarily through Duke Energy Ohio and its wholly owned subsidiary, Duke Energy Kentucky.

131138


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Other is primarily comprised of governance costs allocated by its parent, Duke Energy, and revenues and expenses related to Duke Energy Ohio's contractual arrangement to buy power from OVEC's power plants. For additional information on related party transactions refer to Note 9. See Note 13 for additional information.13. All of Duke Energy Ohio’s revenues are generated domestically and its long-lived assets are all in the U.S.
Year Ended December 31, 2015Year Ended December 31, 2016
    Total
      Electric
 Gas
 Total
      
Regulated
 Commercial
 Reportable
      Utilities and
 Utilities and
 Reportable
      
(in millions)
Utilities
 Portfolio
 Segments
 Other
 Eliminations
 Total
Infrastructure
 Infrastructure
 Segments
 Other
 Eliminations
 Total
Unaffiliated revenues$1,872
 $14
 $1,886
 $19
 $
 $1,905
Intersegment revenues 1
 
 1
 
 (1) 
Total revenues$1,873
 $14
 $1,887
 $19
 $(1) $1,905
$1,410
 $503
 $1,913
 $31
 $
 $1,944
Interest expense $78
 $
 $78
 $1
 $
 $79
$58
 $27
 $85
 $1
 $
 $86
Depreciation and amortization 226
 
 226
 1
 
 227
151
 80
 231
 2
 
 233
Income tax expense (benefit) 105
 (5) 100
 (19) 
 81
55
 44
 99
 (21) 
 78
Segment income (loss)191
 (8) 183
 (33) (1) 149
154
 77
 231
 (39) 
 192
Income from discontinued operations, net of tax          23
          36
Net income

 

 

 

   $172


 

 

 

   $228
Capital expenditures $399
 $
 $399
 $
 $
 $399
$322
 $154
 $476
 $
 $
 $476
Segment assets 7,050
 
 7,050
 55
 (8) 7,097
4,782
 2,696
 7,478
 62
 (12) 7,528
Year Ended December 31, 2014Year Ended December 31, 2015
    Total
      Electric
 Gas
 Total
      
Regulated
 Commercial
 Reportable
      Utilities and
 Utilities and
 Reportable
      
(in millions) Utilities
 Portfolio
 Segments
 Other
 Eliminations
 Total
Infrastructure
 Infrastructure
 Segments
 Other
 Eliminations
 Total
Unaffiliated revenues$1,894
 $19
 $1,913
 $
 $
 $1,913
Intersegment revenues 1
 
 1
 
 (1) 
Total revenues$1,895
 $19
 $1,914
 $
 $(1) $1,913
$1,331
 $541
 $1,872
 $33
 $
 $1,905
Interest expense $81
 $5
 $86
 $
 $
 $86
$53
 $25
 $78
 $1
 $
 $79
Depreciation and amortization 211
 2
 213
 1
 
 214
147
 79
 226
 1
 
 227
Income tax expense (benefit) 117
 (67) 50
 (7) 
 43
59
 45
 104
 (23) 
 81
Segment income (loss)(a)
202
 (121) 81
 (13) 
 68
Segment income (loss)118
 73
 191
 (41) (1) 149
Income from discontinued operations, net of tax          (563)          23
Net loss

 

 

 

   $(495)
Net income

 

 

 

   $172
Capital expenditures $300
 $22
 $322
 $
 $
 $322
$264
 $135
 $399
 $
 $
 $399
Segment assets 6,902
 3,187
 10,089
 134
 (230) 9,993
4,534
 2,516
 7,050
 56
 (9) 7,097
 Year Ended December 31, 2014
 Electric
 Gas
 Total
      
 Utilities and
 Utilities and
 Reportable
      
(in millions)  Infrastructure
 Infrastructure
 Segments
 Other
 Eliminations
 Total
Total revenues$1,317
 $578
 $1,895
 $19
 $(1) $1,913
Interest expense  $43
 $37
 $80
 $5
 $1
 $86
Depreciation and amortization  138
 73
 211
 3
 
 214
Income tax expense (benefit)  71
 45
 116
 (73) 
 43
Segment income (loss)(a)
122
 80
 202
 (133) (1) 68
Loss from discontinued operations, net of tax(b)
          (563)
Net loss

 

 

 

   $(495)
Capital expenditures  $193
 $107
 $300
 $22
 $
 $322
Segment assets(c)
4,428
 2,487
 6,915
 3,321
 (243) 9,993
(a)Commercial Portfolio recordedOther includes a $94 million pretax impairment charge related to OVEC.
(b)Includes an impairment of the Midwest Generation Disposal Group. Refer to Note 2 for further information.
(c)Other includes Assets Held for Sale balances related to the Midwest Generation Disposal Group. Refer to Note 2 for further information.

 Year Ended December 31, 2013
     Total
      
 Regulated
 Commercial
 Reportable
      
(in millions)  Utilities
 Portfolio
 Segments
 Other
 Eliminations
 Total
Total revenues$1,765
 $40
 $1,805
 $
 $
 $1,805
Interest expense  $74
 $
 $74
 $
 $
 $74
Depreciation and amortization  200
 13
 213
 
 
 213
Income tax expense (benefit)  91
 (36) 55
 (12) 
 43
Segment income (loss)151
 (65) 86
 (19) 
 67
Income from discontinued operations, net of tax          35
Net income

 

 

 

   $102
Capital expenditures  $375
 $58
 $433
 $
 $
 $433
Segment assets  6,649
 4,170
 10,819
 99
 (155) 10,763

132139


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

DUKE ENERGY CAROLINAS, PROGRESS ENERGY, DUKE ENERGY PROGRESS, DUKE ENERGY FLORIDA AND DUKE ENERGY INDIANA
The remaining Subsidiary Registrants each have one reportable operating segment, RegulatedElectric Utilities and Infrastructure, which generates, transmits, distributes and sells electricity. The remainder of each company’s operations is classified as Other. While not considered a reportable segment for any of these companies, Other consists of certain unallocated corporate costs. Other for Progress Energy also includes interest expense on corporate debt instruments of $221 million, $240 million $241 million and $300$241 million for the years ended December 31, 2016, 2015 2014 and 2013.2014. The following table summarizes the net loss for Other for each of these entities.
Years Ended December 31,Years Ended December 31,
(in millions)2015
 2014
 2013
2016
 2015
 2014
Duke Energy Carolinas$(95) $(79) $(97)$(104) $(95) $(79)
Progress Energy(159) (190) (241)(200) (159) (190)
Duke Energy Progress(32) (31) (46)(56) (32) (31)
Duke Energy Florida(16) (19) (24)(23) (16) (19)
Duke Energy Indiana(10) (11) (16)(13) (10) (11)
Duke Energy Progress earned approximately 10 percent of its consolidated operating revenues from North Carolina Electric Membership Corporation (NCEMC) in 2015. These revenues relate to wholesale contracts and transmission revenues. The assets of Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida and Duke Energy Indiana are substantially all included within the RegulatedElectric Utilities and Infrastructure segment at December 31, 2016, 2015 2014 and 2013.32014.

140


PART II
DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

4. REGULATORY MATTERS
Regulatory Assets and LiabilitiesREGULATORY ASSETS AND LIABILITIES
The Duke Energy Registrants record regulatory assets and liabilities that result from the ratemaking process. See Note 1 for further information.

133


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

The following tables present the regulatory assets and liabilities recorded on the Consolidated Balance Sheets.
 December 31, 2015
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Regulatory Assets             
Asset retirement obligations – coal ash$2,555
 $1,120
 $1,394
 $1,386
 $8
 $4
 $37
Asset retirement obligations – nuclear and other838
 104
 487
 195
 292
 
 
Accrued pension and OPEB2,151
 479
 807
 366
 441
 139
 220
Retired generation facilities509
 49
 409
 179
 230
 
 51
Debt fair value adjustment1,191
 
 
 
 
 
 
Net regulatory asset related to income taxes1,075
 564
 318
 106
 212
 55
 120
Nuclear asset securitizable balance, net1,237
 
 1,237
 
 1,237
 
 
Hedge costs and other deferrals571
 127
 410
 171
 239
 7
 27
Demand side management (DSM)/Energy efficiency (EE)340
 80
 250
 237
 13
 10
 
Grid Modernization68
 
 
 
 
 68
 
Vacation accrual192
 79
 38
 38
 
 5
 10
Deferred fuel and purchased power151
 21
 129
 93
 36
 1
 
Nuclear deferral245
 107
 138
 62
 76
 
 
Post-in-service carrying costs and deferred operating expenses383
 97
 38
 38
 
 21
 227
Gasification services agreement buyout32
 
 
 
 
 
 32
Transmission expansion obligation72
 
 
 
 
 72
 
Manufactured gas plant (MGP)104
 
 
 
 
 104
 
NCEMPA deferrals21
 
 21
 21
 
 
 
East Bend deferrals16
 
 
 
 
 16
 
Other499
 244
 121
 82
 39
 31
 94
Total regulatory assets12,250
 3,071
 5,797
 2,974
 2,823
 533
 818
Less: current portion877
 305
 362
 264
 98
 36
 102
Total noncurrent regulatory assets$11,373
 $2,766
 $5,435
 $2,710
 $2,725
 $497
 $716
 December 31, 2015
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Regulatory Liabilities  
             
Costs of removal$5,329
 $2,413
 $2,078
 $1,725
 $353
 $222
 $616
Amounts to be refunded to customers71
 
 
 
 
 
 71
Storm reserve150
 24
 125
 
 125
 1
 
Accrued pension and OPEB288
 68
 51
 25
 26
 21
 83
Deferred fuel and purchased power311
 55
 255
 58
 197
 1
 
Other506
 281
 164
 155
 8
 12
 46
Total regulatory liabilities  
6,655
 2,841
 2,673
 1,963
 709
 257
 816
Less: current portion  
400
 39
 286
 85
 200
 12
 62
Total noncurrent regulatory liabilities  
$6,255
 $2,802
 $2,387
 $1,878
 $509
 $245
 $754
 December 31, 2016
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Regulatory Assets             
AROs – coal ash$3,761
 $1,536
 $1,830
 $1,822
 $8
 $12
 $276
AROs – nuclear and other684
 9
 569
 275
 294
 
 
Accrued pension and OPEB2,387
 481
 882
 423
 458
 135
 222
Retired generation facilities534
 39
 422
 165
 257
 
 73
Debt fair value adjustment1,313
 
 
 
 
 
 
Net regulatory asset related to income taxes894
 484
 231
 7
 224
 63
 119
Storm cost deferrals153
 
 148
 148
 
 5
 
Nuclear asset securitized balance, net1,193
 
 1,193
 
 1,193
 
 
Hedge costs and other deferrals217
 93
 91
 66
 25
 7
 26
Derivatives – gas supply contracts187
 
 
 
 
 
 
Demand side management (DSM)/Energy efficiency (EE)407
 122
 278
 263
 15
 6
 
Grid Modernization65
 
 
 
 
 65
 
Vacation accrual196
 76
 38
 38
 
 4
 10
Deferred fuel and purchased power156
 
 111
 24
 87
 5
 40
Nuclear deferral226
 92
 134
 38
 96
 
 
Post-in-service carrying costs and deferred operating expenses413
 70
 42
 42
 
 20
 281
Gasification services agreement buyout8
 
 
 
 
 
 8
Transmission expansion obligation71
 
 
 
 
 71
 
Manufactured gas plant (MGP)99
 
 
 
 
 99
 
Advanced metering infrastructure218
 172
 
 
 
 
 46
NCEMPA deferrals51
 
 51
 51
 
 
 
East Bend deferrals32
 
 
 
 
 32
 
Other636
 223
 103
 69
 36
 33
 121
Total regulatory assets13,901
 3,397
 6,123
 3,431
 2,693
 557
 1,222
Less: current portion1,023
 238
 401
 188
 213
 37
 149
Total noncurrent regulatory assets$12,878
 $3,159
 $5,722
 $3,243
 $2,480
 $520
 $1,073


134141


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

 December 31, 2014
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Regulatory Assets  
             
Asset retirement obligations – coal ash$1,992
 $840
 $1,152
 $1,152
 $
 $
 $
Asset retirement obligations – nuclear and other1,025
 67
 730
 432
 298
 
 
Accrued pension and OPEB2,015
 412
 812
 354
 458
 132
 217
Retired generation facilities1,659
 58
 1,545
 152
 1,393
 
 56
Debt fair value adjustment1,305
 
 
 
 
 
 
Net regulatory asset related to income taxes1,144
 614
 354
 141
 213
 64
 111
Hedge costs and other deferrals628
 103
 490
 217
 273
 7
 28
DSM/EE330
 106
 203
 193
 10
 21
 
Grid Modernization76
 
 
 
 
 76
 
Vacation accrual213
 86
 46
 46
 
 6
 12
Deferred fuel and purchased power246
 50
 182
 138
 44
 9
 5
Nuclear deferral296
 141
 155
 43
 112
 
 
Post-in-service carrying costs and deferred operating expenses494
 124
 121
 28
 93
 21
 228
Gasification services agreement buyout  55
 
 
 
 
 
 55
Transmission expansion obligation70
 
 
 
 
 74
 
MGP  115
 
 
 
 
 115
 
Other494
 263
 109
 66
 42
 36
 66
Total regulatory assets12,157
 2,864
 5,899
 2,962
 2,936
 561
 778
Less: current portion1,115
 399
 491
 287
 203
 49
 93
Total noncurrent regulatory assets$11,042
 $2,465
 $5,408
 $2,675
 $2,733
 $512
 $685
December 31, 2014December 31, 2016
  Duke
   Duke
 Duke
 Duke
 Duke
  Duke
   Duke
 Duke
 Duke
 Duke
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Regulatory Liabilities
                          
Costs of removal$5,221
 $2,420
 $1,975
 $1,692
 $283
 $222
 $613
$6,074
 $2,476
 $2,198
 $1,840
 $358
 $212
 $660
Amounts to be refunded to customers166
 
 70
 
 70
 
 96
45
 
 
 
 
 
 45
Storm reserve150
 25
 125
 
 125
 
 
83
 22
 60
 
 60
 1
 
Accrued pension and OPEB379
 76
 121
 61
 60
 19
 91
174
 46
 
 
 
 19
 72
Deferred fuel and purchased power37
 6
 23
 23
 
 
 8
192
 105
 81
 64
 17
 6
 
Other444
 217
 171
 127
 44
 10
 42
722
 352
 245
 200
 44
 19
 11
Total regulatory liabilities6,397
 2,744
 2,485
 1,903
 582
 251
 850
7,290
 3,001
 2,584
 2,104
 479
 257
 788
Less: current portion204
 34
 106
 71
 35
 10
 54
409
 161
 189
 158
 31
 21
 40
Total noncurrent regulatory liabilities$6,193
 $2,710
 $2,379
 $1,832
 $547
 $241
 $796
$6,881
 $2,840
 $2,395
 $1,946
 $448
 $236
 $748
 December 31, 2015
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Regulatory Assets  
             
AROs – coal ash$2,555
 $1,120
 $1,394
 $1,386
 $8
 $4
 $37
AROs – nuclear and other838
 104
 487
 195
 292
 
 
Accrued pension and OPEB2,151
 479
 807
 366
 441
 139
 220
Retired generation facilities509
 49
 409
 179
 230
 
 51
Debt fair value adjustment1,191
 
 
 
 
 
 
Net regulatory asset related to income taxes1,075
 564
 318
 106
 212
 55
 120
Nuclear asset securitizable balance, net1,237
 
 1,237
 
 1,237
 
 
Hedge costs and other deferrals571
 127
 410
 171
 239
 7
 27
DSM/EE340
 80
 250
 237
 13
 10
 
Grid Modernization68
 
 
 
 
 68
 
Vacation accrual192
 79
 38
 38
 
 5
 10
Deferred fuel and purchased power151
 21
 129
 93
 36
 1
 
Nuclear deferral245
 107
 138
 62
 76
 
 
Post-in-service carrying costs and deferred operating expenses383
 97
 38
 38
 
 21
 227
Gasification services agreement buyout  32
 
 
 
 
 
 32
Transmission expansion obligation72
 
 
 
 
 72
 
MGP104
 
 
 
 
 104
 
NCEMPA deferrals21
 
 21
 21
 
 
 
East Bend deferrals16
 
 
 
 
 16
 
Other499
 244
 121
 82
 39
 31
 94
Total regulatory assets12,250
 3,071
 5,797
 2,974
 2,823
 533
 818
Less: current portion877
 305
 362
 264
 98
 36
 102
Total noncurrent regulatory assets$11,373
 $2,766
 $5,435
 $2,710
 $2,725
 $497
 $716

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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

 December 31, 2015
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Regulatory Liabilities  
             
Costs of removal$5,329
 $2,413
 $2,078
 $1,725
 $353
 $222
 $616
Amounts to be refunded to customers71
 
 
 
 
 
 71
Storm reserve150
 24
 125
 
 125
 1
 
Accrued pension and OPEB288
 68
 51
 25
 26
 21
 83
Deferred fuel and purchased power311
 55
 255
 58
 197
 1
 
Other506
 281
 164
 155
 8
 12
 46
Total regulatory liabilities6,655
 2,841
 2,673
 1,963
 709
 257
 816
Less: current portion400
 39
 286
 85
 200
 12
 62
Total noncurrent regulatory liabilities$6,255
 $2,802
 $2,387
 $1,878
 $509
 $245
 $754
Descriptions of regulatory assets and liabilities, summarized in the tables above, as well as their recovery and amortization periods follow. Items are excluded from rate base unless otherwise noted.
Asset retirement obligationsAROs coal ash. Represents regulatory assets including deferred depreciation and accretion related to the legal obligation to close ash basins. The costs are deferred until recovery treatment has been determined. The recovery period for these costs has yet to be established. Duke Energy Carolinas, Duke Energy Progress and Duke Energy Ohio earn a debt return on their expenditures. See Notes 1 and 9 for additional information.
Asset retirement obligationsAROs nuclear and other. Represents regulatory assets, including deferred depreciation and accretion, related to legal obligations associated with the future retirement of property, plant and equipment, excluding amounts related to coal ash. The Asset retirement obligationsAROs relate primarily to decommissioning nuclear power facilities. The amounts also include certain deferred gains on NDTF investments. The recovery period for costs related to nuclear facilities runs through the decommissioning period of each nuclear unit, the latest of which is currently estimated to be 2086. See Notes 1 and 9 for additional information.

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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

Accrued pension and OPEB. Accrued pension and OPEBother post-retirement benefit obligations (OPEB) represent regulatory assets and liabilities related to each of the Duke Energy Registrants’ respective shares of unrecognized actuarial gains and losses and unrecognized prior service cost and credit attributable to Duke Energy’s pension plans and OPEB plans. The regulatory asset or liability is amortized with the recognition of actuarial gains and losses and prior service cost and credit to net periodic benefit costs for pension and OPEB plans. The accrued pension and OPEB regulatory asset is expected to be recovered primarily over average remaining service periods of active employees covered by the benefit plans, which is approximately 9 years. See Note 21 for additional detail.
Retired generation facilities. Duke Energy Carolinas earns a return on the outstanding retail balance with recovery periods ranging from one to six years. Duke Energy Progress earns a return on the outstanding balance with recovery over a period of 10 years beginning in 2013 for retail purposes and over the longer of 10 years or the previously estimated planned retirement date for wholesale purposes. Duke Energy Indiana earns a return on the outstanding balances and the costs are included in rate base. Duke Energy Indiana’s recovery period will be determined in the next general rate case. Duke Energy Florida earns a full return on a portion of the regulatory asset related to the retired nuclear plant currently recovered in the nuclear cost recovery clause (NCRC), with the remaining portion earning a reduced return. Duke Energy Carolinas earns a return on the outstanding retail balance withFlorida’s recovery periods ranging from five to 10 years. Duke Energy Progress earns a return on the outstanding balance with recovery over a period of 10 years for retail purposes and over the longer of 10 years or the previously estimated planned retirement date for wholesale purposes. Duke Energy Indiana earns a return on the outstanding balances and the costs are included in rate base.varies.
Debt fair value adjustment. Purchase accounting adjustmentadjustments recorded to state the carrying value of Progress Energy and Piedmont at fair value in connection with the 2012 merger.and 2016 mergers, respectively. Amount is amortized over the life of the related debt.
Net regulatory asset related to income taxes. Regulatory assets principally associated with the depreciation and recovery of AFUDC equity. Amounts have no impact on rate base as regulatory assets are offset by deferred tax liabilities. The recovery period is over the life of the associated assets. Amounts for all registrants include regulatory liabilities related to the gross up of federal ITCs. Amounts for Duke Energy, Duke Energy Carolinas, Progress Energy and Duke Energy Progress include regulatory liabilities related to the change in the North Carolina corporate tax rate discussed in Note 22.
Storm cost deferrals. Represents deferred incremental costs incurred related to extraordinary weather-related events, primarily damage resulting from Hurricane Matthew in the fourth quarter of 2016. The recovery period is unknown.
Nuclear asset securitizable balance, net. Represents the balance associated with Crystal River Unit 3 retirement approved for recovery by the FPSC on September 15, 2015, and the deferred operating expenses expected to beupfront financing costs securitized in 2016 uponwith issuance of the associated bonds. The regulatory asset balance is net of the AFUDC equity portion of the $1.283 billion amount approved by the FPSC.portion. The regulatory asset balance approved for recovery by the FPSC will earn a reduced return until the expected bond issuance, after which it will earn a return in rates to recover the interest costs of the associated debt. Once bonds are issued, the balance will be recovered over approximately 20 years. This regulatory assetperiod is not included in rate base.through 2036.
Hedge costs and other deferrals. Amounts relate to unrealized gains and losses on derivatives recorded as a regulatory asset or liability, respectively, until the contracts are settled. The recovery period varies for these costs and currently extends to 2048.
Derivatives – gas supply contracts held for utility operations. Represents costs for certain long-dated, fixed quantity forward gas supply contracts which are recoverable through Piedmont's PGA clauses.

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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

DSM/EE. The recovery period varies for these costs, with some currently unknown. Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida are required to pay interest on the outstanding liability balance. Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida collect a return on DSM/EE investments.
Grid Modernization. RepresentsDuke Energy Ohio amounts represent deferred depreciation and operating expenses as well as carrying costs on the portion of capital expenditures placed in service but not yet reflected in retail rates as plant in service. Recovery period is generally one year for depreciation and operating expenses. Recovery for post-in-service carrying costs is over the life of the assets. Duke Energy Ohio is earning a return on these costs.
Vacation accrual. Generally recovered within one year. Duke Energy Carolinas earns a return on the North Carolina balance.
Deferred fuel and purchased power. Represents certain energy relatedenergy-related costs that are recoverable or refundable as approved by the applicable regulatory body. Duke Energy Florida amount includes capacity costs. Duke Energy Florida earns a return on the retail portion of under-recovered costs. Duke Energy Ohio earns a return on under-recovered costs. Duke Energy Florida and Duke Energy Ohio pay interest on over-recovered costs. Duke Energy Carolinas and Duke Energy Progress amounts include certain purchased power costs in both North Carolina and South Carolina and costs of distributed energy resource programs in South Carolina. Duke Energy Carolinas and Duke Energy Progress pay interest on over-recovered costs in North Carolina. Recovery period is generally over one year. Duke Energy Indiana recovery period is quarterly.
Nuclear deferral. Includes (i) amounts related to levelizing nuclear plant outage costs at Duke Energy Carolinas in North Carolina and South Carolina, and Duke Energy Progress in North Carolina and South Carolina, which allows for the recognition of nuclear outage expenses over the refueling cycle rather than when the outage occurs, resulting in the deferral of operations and maintenance costs associated with refueling and (ii) certain deferred preconstruction and carrying costs at Duke Energy Florida as approved by the FPSC, primarily associated with the Levy nuclear project (Levy), with a final true-up to be filed by May 2017.
Post-in-service carrying costs and deferred operating expenses. Represents deferred depreciation and operating expenses as well as carrying costs on the portion of capital expenditures placed in service but not yet reflected in retail rates as plant in service. Duke Energy Carolinas, Duke Energy Progress, Duke Energy Ohio and Duke Energy Indiana earn a return on the outstanding balance. Duke Energy Florida earns a return at a reduced rate. For Duke Energy Ohio and Duke Energy Indiana, some amounts are included in rate base. Recovery is over various lives and the latest recovery period is 2082.2083.
Gasification services agreement buyout. The IURC authorized Duke Energy Indiana to recover costs incurred to buyout a gasification services agreement, including carrying costs through 2018.2017. Duke Energy Indiana earns a return on this balance.
Transmission expansion obligation. Represents transmission expansion obligations related to Duke Energy Ohio’s withdrawal from Midcontinent Independent System Operator, Inc. (MISO).
MGP. Represents remediation costs forincurred at former MGP sites. In November 2013,sites and the PUCOdeferral of costs to be incurred at the East End and West End sites through 2019. Costs incurred between 2008 and 2012 are recovered through an approved recoveryMGP rider. Recovery of costs incurred through 2019.after 2012 has been requested but is pending approval from the PUCO. Duke Energy Ohio does not earn a return on these costs.
Advanced metering infrastructure (AMI). Duke Energy Carolinas amount represents deferred costs related to the installation of AMI meters and remaining net book value of non-AMI meters to be replaced. Duke Energy Carolinas earns a return on a portion of the costs and the recovery period varies. Duke Energy Indiana amount represents expected future recovery of net book value of electromechanical meters that have been replaced with AMI meters. Duke Energy Indiana expects to recover this asset over a six-year period and the meters will remain in rate base until the next general rate case.
NCEMPA deferrals. Represents retail allocated cost deferrals and returns associated with the additional ownership interest in assets acquired from NCEMPA discussed in Note 2. The North Carolina retail allocated costs are generally being recovered over a period of time between three years and the remaining life of the assets purchased through a rider that became effective on December 1, 2015. The South Carolina retail allocated costs will be amortized over an average of 24 years beginning January 2017 are being deferred until Duke Energy Progress' next general rate case, earning a return pursuant to an order received from the PSCSC.return.

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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

East Bend deferrals. Represents both deferred operating expenses and deferred depreciation as well as carrying costs on the portion of East Bend Generating Station (East Bend) that was acquired from Dayton Power and Light and that had been previously operated as a jointly owned facility. Recovery will not commence until the settlementresolution of the next electric rate case in Kentucky. Duke Energy Ohio is earning a return on these deferred costs.
Costs of removal. Represents funds received from customers to cover the future removal of property, plant and equipment from retired or abandoned sites as property is retired. Also includes certain deferred gains on NDTF investments.
Amounts to be refunded to customers. Represents required rate reductions to retail customers by the applicable regulatory body. The period of refund for Duke Energy Indiana is through 2017.2018.
Storm reserve. Duke Energy Carolinas and Duke Energy Florida are allowed to petition the PSCSC and FPSC, respectively, to seek recovery of incremental or allowable costs incurred for named storms. Funds are used to offset future incurred costs.
Restrictions on the Ability of Certain Subsidiaries to Make Dividends, Advances and Loans to Duke EnergyRESTRICTIONS ON THE ABILITY OF CERTAIN SUBSIDIARIES TO MAKE DIVIDENDS, ADVANCES AND LOANS TO DUKE ENERGY
As a condition to the approval of merger transactions, the NCUC, PSCSC, PUCO, KPSC and IURC imposed conditions on the ability of Duke Energy Carolinas, Duke Energy Progress, Duke Energy Ohio, Duke Energy Kentucky, and Duke Energy Indiana and Piedmont to transfer funds to Duke Energy through loans or advances, as well as restricted amounts available to pay dividends to Duke Energy. Certain subsidiaries may transfer funds to Duke Energy Corporation Holding Company (the parent) by obtaining approval of the respective state regulatory commissions. These conditions imposed restrictions on the ability of the public utility subsidiaries to pay cash dividends as discussed below.

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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Duke Energy Progress and Duke Energy Florida also have restrictions imposed by their first mortgage bond indentures and Articles of Incorporation which, in certain circumstances, limit their ability to make cash dividends or distributions on common stock. Amounts restricted as a result of these provisions were not material at December 31, 2015.2016.
Additionally, certain other subsidiaries of Duke Energy have restrictions on their ability to dividend, loan or advance funds to Duke Energy due to specific legal or regulatory restrictions, including, but not limited to, minimum working capital and tangible net worth requirements.
The restrictions discussed below were less than 25 percent of Duke Energy's net assets at December 31, 2016.
Duke Energy Carolinas
Duke Energy Carolinas must limit cumulative distributions subsequent to mergers to (i) the amount of retained earnings on the day prior to the closing of the mergers, plus (ii) any future earnings recorded.
Duke Energy Progress
Duke Energy Progress must limit cumulative distributions subsequent to the mergermergers between Duke Energy and Progress Energy and Duke Energy and Piedmont to (i) the amount of retained earnings on the day prior to the closing of the merger,respective mergers, plus (ii) any future earnings recorded.
Duke Energy Ohio
Duke Energy Ohio will not declare and pay dividends out of capital or unearned surplus without the prior authorization of the PUCO. Duke Energy Ohio received FERC and PUCO approval to pay dividends from its equity accounts that are reflective of the amount that it would have in its retained earnings account had push-down accounting for the Cinergy Corp. (Cinergy) merger not been applied to Duke Energy Ohio’s balance sheet. The conditions include a commitment from Duke Energy Ohio that equity, adjusted to remove the impacts of push-down accounting, will not fall below 30 percent of total capital.
Duke Energy Kentucky is required to pay dividends solely out of retained earnings and to maintain a minimum of 35 percent equity in its capital structure.
Duke Energy Indiana
Duke Energy Indiana must limit cumulative distributions subsequent to the merger between Duke Energy and Cinergy to (i) the amount of retained earnings on the day prior to the closing of the merger, plus (ii) any future earnings recorded. In addition, Duke Energy Indiana will not declare and pay dividends out of capital or unearned surplus without prior authorization of the IURC.
The restrictions discussed above were less than 25 percentPiedmont
Piedmont must limit cumulative distributions subsequent to the acquisition of Piedmont by Duke Energy's net assets at December 31, 2015.Energy to (i) the amount of retained earnings on the day prior to the closing of the merger, plus (ii) any future earnings recorded.
Rate Related InformationRATE RELATED INFORMATION
The NCUC, PSCSC, FPSC, IURC, PUCO, TRA and KPSC approve rates for retail electric and natural gas services within their states. The FERC approves rates for electric sales to wholesale customers served under cost-based rates (excluding Ohio and Indiana), as well as sales of transmission service. The FERC also regulates certification and siting of new interstate natural gas pipeline projects.
Duke Energy Carolinas and Duke Energy Progress
Ash Basin Closure Costs Deferral
On July 13, 2016, in response to a joint petition of Duke Energy Carolinas and Duke Energy Progress, the PSCSC issued an accounting order for the deferment into a regulatory account of certain costs incurred in connection with federal and state environmental remediation requirements related to the permanent closure of ash basins and other ash storage units at coal-fired generating facilities that have provided or are providing generation to customers located in South Carolina. The decision allows for ash basin closure expenses to be partially offset with excess regulatory liability amounts from the deferral of nuclear decommissioning costs that are collected from South Carolina retail customers and for Duke Energy Progress to partially offset incurred ash basin closure costs with costs of removal amounts collected from customers. The PSCSC's ruling does not change retail rates or the tariff amounts and does not limit the ability of interested parties to challenge the reasonableness of expenditures in subsequent proceedings. In connection with Duke Energy Progress' base rate case filed in July 2016, in December 2016, the PSCSC approved recovery of coal ash costs incurred from January 1, 2015, through June 30, 2016, over a 15-year period and ongoing deferral of future ash basin closure costs incurred from July 1, 2016, until its next base rate case in South Carolina.
On December 30, 2016, Duke Energy Carolinas and Duke Energy Progress filed a joint petition with the NCUC seeking an accounting order authorizing deferral of certain costs incurred in connection with federal and state environmental remediation requirements related to the permanent closure of ash basins and other ash storage units at coal-fired generating facilities that have provided or are providing generation to customers located in North Carolina. Initial comments are due by March 1, 2017, and reply comments are due by March 29, 2017. Duke Energy Carolinas and Duke Energy Progress cannot predict the outcome of this matter.

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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

FERC Transmission Return on Equity ComplaintComplaints
On January 7, 2016, a customer group of transmission service customers filed a complaint with the FERC that the rate of return on equity of 10.2 percent in Duke Energy Carolinas' transmission formula rates is excessive and should be reduced to no higher than 8.49 percent, effective upon the complaint date. The customer group requests consolidation withOn the same date, a similar complaint was filed againstwith FERC claiming that the rate of return on equity of 10.8 percent in Duke Energy Progress' transmission formula rates is excessive and should be reduced to no higher than 8.49 percent, effective upon the complaint date. On April 21, 2016, FERC issued an order which consolidated the cases, set a refund effective date of January 7, 2016, and set the consolidated case for settlement and hearing. On June 14, 2016, Duke Energy Carolinas and Duke Energy Progress reached a settlement agreement in principle to reduce the return on equity for both companies to 10 percent. On November 21, 2016, the same day.FERC approved the settlement agreement resolving the complaints. The Impact on results of operations, cash flows and the financial position of Duke Energy Carolinas cannot predictand Duke Energy Progress will not be material.
Duke Energy Carolinas
Advanced Metering Infrastructure Deferral
On July 12, 2016, the outcomePSCSC issued an accounting order for Duke Energy Carolinas to defer the financial effects of this matter.depreciation expense incurred for the installation of AMI meters, the carrying costs on the investment at its weighted average cost of capital (WACC) and the carrying costs on the deferred costs at its WACC not to exceed $45 million. The decision also allows Duke Energy Carolinas to continue to depreciate the non-AMI meters to be replaced. Current retail rates will not change as a result of the decision and the ability of interested parties to challenge the reasonableness of expenditures in subsequent proceedings is not limited.

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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

William States Lee Combined Cycle Facility
On April 9, 2014, the PSCSC granted Duke Energy Carolinas and NCEMCNorth Carolina Electric Membership Corporation (NCEMC) a Certificate of Environmental Compatibility and Public Convenience and Necessity (CECPCN) for the construction and operation of a 750 MW combined-cycle natural gas-fired generating plant at Duke Energy Carolinas' existing William States Lee Generating Station in Anderson, South Carolina. Duke Energy Carolinas began construction in July 2015 and estimates a cost to build of $600 million for its share of the facility, including AFUDC. The project is expected to be commercially available in late 2017. NCEMC will own approximately 13 percent of the project. On July 3, 2014, the South Carolina Coastal Conservation League (SCCL) and Southern Alliance for Clean Energy (SACE) jointly filed a Notice of Appeal with the Court of Appeals of South Carolina (S.C. Court of Appeals) seeking the court's review of the PSCSC's decision, claiming the PSCSC did not properly consider a request related to a proposed solar facility prior to granting approval of the CECPCN. The S.C. Court of Appeals affirmed the PSCSC's decision on February 10, 2016, and on March 24, 2016, denied a request for rehearing filed by SCCL and SACE. On April 21, 2016, SCCL and SACE petitioned the South Carolina Supreme Court for review of the S.C. Court of Appeals decision. Duke Energy Carolinas filed its response on June 13, 2016, and SCCL and SACE filed a reply on June 23, 2016. On February 23,September 6, 2016, the Small Business Chamber of Commerce filed a motion for permission to file a brief supporting the environmental intervenors’ position. On September 22, 2016, the South Carolina Coastal Conservation LeagueSupreme Court granted permission for the brief and Southern Alliance for Cleanallowed Duke Energy Carolinas an opportunity to file a response, which was filed a petition for rehearing withon October 3, 2016. Duke Energy Carolinas cannot predict the Courtoutcome of Appeals.this matter.
William States Lee III Nuclear Station
In December 2007, Duke Energy Carolinas applied to the NRC for a COLcombined operating licenses (COLs) for two Westinghouse AP1000 (advanced passive) reactors for the proposed William States Lee III Nuclear Station (Lee Nuclear Station)to be located at a site in Cherokee County, South Carolina. Submitting the COL application did not commit Duke Energy Carolinas to build nuclear units. Through several separate orders, theThe NCUC and PSCSC have concurred with the prudency of Duke Energy Carolinas incurring certain project development and pre-constructionpreconstruction costs through several separately issued orders, although full cost recovery of costs is not guaranteed. In December 2016, the NRC issued a COL for each reactor. As of December 31, 2016, Duke Energy Carolinas has incurred approximately $471$520 million of costs, including AFUDC, through December 31, 2015. This amount isrelated to the project. These project costs are included in Net property, plant and equipment on Duke Energy Carolinas’ Consolidated Balance Sheets.
Design changes have been identified in Duke Energy Carolinas is not required to build the Westinghouse AP1000 certified design that must be addressed before NRC can complete its reviewnuclear reactors as result of the Lee Nuclear Station COL application. These design changes set the schedule for completion of the NRC COL application review and issuance of the Lee COL. Receipt of the Lee Nuclear Station COL is currently expected by late 2016.COLs being issued.
Duke Energy Progress
FERC Transmission Return on Equity ComplaintStorm Cost Deferral Filings
On January 7,December 16, 2016, a customer groupDuke Energy Progress filed a complaintpetition with the FERC thatNCUC requesting an accounting order to defer certain costs incurred in connection with response to Hurricane Matthew and other significant storms in 2016. Current estimated incremental operation and maintenance and capital costs total approximately $140 million. Additional costs could be incurred in 2017 related to storms in the ratefourth quarter of return on equity of 10.8 percent in2016. Duke Energy Progress' transmission formula rates is excessive and should be reducedProgress proposes to no higher than 8.49 percent, effective upontrue-up the complaint date. The customer group requests consolidation with a similar complaint filed against Duke Energy Carolinas on the same day.total costs quarterly through August 2017. Duke Energy Progress cannot predict the outcome of this matter.
Sutton Black Start Combustion Turbine CPCN
On April 15, 2015,December 16, 2016, Duke Energy Progress filed a Certificatepetition with the PSCSC requesting an accounting order to defer certain costs incurred related to repairs and restoration of Public Convenienceservice following Hurricane Matthew. Estimated total restoration costs are approximately $60 million. Actual total costs would be trued-up quarterly through 2017. In January 2017, the PSCSC approved the deferral request and Necessity (CPCN)issued an accounting order.

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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

South Carolina Rate Case
On July 1, 2016, Duke Energy Progress filed an application with the NCUC for approvalPSCSC requesting an average 14.5 percent increase in retail revenues. The requested rate change would increase annual revenues by approximately $79 million, with a rate of return on equity of 10.75 percent. The increase is designed to construct an 84 MW black start combustion turbine (CT) project atrecover the existing Sutton Plant (Sutton Black Start CT Project). The Sutton Black Start CT Project would replace three existing CTscost of investment in new generation infrastructure, environmental expenditures including allocated historical ash basin closure costs and increased nuclear operating costs. Duke Energy Progress has requested new rates to be effective January 1, 2017. On October 19, 2016, Duke Energy Progress, the ORS and intervenors entered into a settlement agreement that was filed with total capacity of 61 MW with two new 42 MW CT units with black start and fast start capability. In addition to peaking system capacity, the Sutton Black Start CT Project will provide regional black start capability and tertiary backup power services forPSCSC on the Brunswick Nuclear Plant. In June 2015, the Public Staffsame day. Terms of the NCUC recommended the NCUC approvesettlement agreement include an approximate $56 million increase in revenues over a two-year period. An increase of approximately $38 million in revenues was effective January 1, 2017, and an additional increase of approximately $18.5 million in revenues will be effective January 1, 2018. Duke Energy Progress' application. On August 3,Progress will amortize approximately $18.5 million from the cost of removal reserve in 2017. Other settlement terms include a rate of return on equity of 10.1 percent, recovery of coal ash costs incurred from January 1, 2015, through June 30, 2016, over a 15-year period and ongoing deferral of allocated ash basin closure costs from July 1, 2016, until the NCUCnext base rate case. The settlement also provides that Duke Energy Progress will not seek an increase in rates in South Carolina to occur prior to 2019, with limited exceptions. In December 2016, the PSCSC approved the settlement and issued an order granting the application and requiring annual construction and cost progress reports. The new units are expected to be commercially available in the summer of 2017.approval order.
Western Carolinas Modernization Plan
In May 2015, Duke Energy Progress announced a $1.1 billion plan to modernize the Western Carolinas energy system. The plan included retirement of the Asheville coal-fired plant, building a 650 MW combined-cycle natural gas power plant, installing solar generation at the site, building new transmission lines, a new substation and upgrades to area substations. On June 24, 2015, the North Carolina governor signed into law the North Carolina Mountain Energy Act of 2015 (Mountain Energy Act) which provides for an expedited CPCN process for the proposed Asheville combined-cycle project and extends certain North Carolina Coal Ash Management Act of 2014 (Coal Ash Act) deadlines for the coal ash basin at the Asheville Plant site.
On November 4, 2015, in response to community feedback, Duke Energy Progress announced a revised plan.Western Carolinas Modernization Plan with an estimated cost of $1.1 billion. The revised plan replacesincludes retirement of the planned 650 MWexisting Asheville coal-fired plant, withthe construction of two 280 MW combined-cycle natural gas plants having dual fuel capability, with the option to build a third natural gas simple cycle unit in 2023 based upon the outcome of initiatives to reduce the region's power demand. The revised plan includes upgrades to existing transmission lines and substations, but eliminates the need for a new transmission line and a new substation associated with the project in South Carolina. The revised plan has the same overall project cost as the original plan and the plans to install solar generation remain unchanged. Duke Energy Progress has also proposed to add a pilot battery storage project. These investments will be made within the next seven years. Duke Energy Progress is also working with the local natural gas distribution company to upgrade an existing natural gas pipeline to serve the natural gas plant. The plan requires various approvals including regulatory approvals in North Carolina.
Duke Energy Progress filed for a CPCNCertificate of Public Convenience and Necessity (CPCN) with the NCUC for the new natural gas units on January 15, 2016. At the NCUC's staff conference on February 22,On March 28, 2016, the Public Staff recommended approval ofNCUC issued an order approving the CPCN for the two combined cyclenew combined-cycle natural gas plants, and recommended thatbut denying the NCUC not issue a CPCN for the contingent simple cycle unit at this time. The NCUC also heard arguments from intervenors andwithout prejudice to Duke Energy Progress. PursuantProgress to refile for approval in the future. Site preparation activities are underway and construction of these plants is scheduled to begin in early 2017. The plants are expected to be in service by late 2019. Duke Energy Progress plans to file for future approvals related to the Mountainproposed solar generation and pilot battery storage project.
On May 27, 2016, N.C. Waste Awareness and Reduction Network (NC WARN) and The Climate Times filed a notice of appeal from the CPCN order to the N.C. Court of Appeals. On May 31, 2016, Duke Energy Act,Progress filed a motion to dismiss the notice of appeal with the NCUC due to NC WARN's and The Climate Times' failure to post a required appeal bond. After a series of filings, an NCUC order, petitions to the N.C. Court of Appeals and an evidentiary hearing, on July 8, 2016, the NCUC issued an order setting NC WARN's and The Climate Times' appeal bond at $98 million. On July 28, 2016, NC WARN and The Climate Times filed a notice of appeal and exceptions from the NCUC's deadlineJuly 8, 2016, appeal bond order. On August 2, 2016, the NCUC granted Duke Energy Progress' motion to issue a decision ondismiss NC WARN's and The Climate Times' notice of appeal from the CPCN is February 29,order due to failure to post the requisite bond. On August 18, 2016, NC WARN and The Climate Times filed a petition with the N.C. Court of Appeals seeking appellate review of the NCUC’s CPCN order, the July 8, 2016, appeal bond order and the August 2, 2016, order dismissing their notice of appeal, which the N.C. Court of Appeals denied on September 6, 2016. On September 19, 2016, the NCUC granted Duke Energy Progress' motion to dismiss NC WARN's and The Climate Times' subsequent appeal of the second bond order dated July 28, 2016, and NC WARN's and The Climate Times' subsequent appeal of the CPCN order and dismissal order dated August 18, 2016. On October 17, 2016, NC WARN and The Climate Times filed another petition for review with the N.C. Court of Appeals asking the court to reverse the CPCN order, the second bond order and the dismissal of their first and second notices of appeal as to the CPCN order. On November 3, 2016, the N.C. Court of Appeals denied NC WARN's and The Climate Times' petition for review. All appeals have been concluded.
The carrying value of the 376 MW Asheville coal-fired plant, including associated ash basin closure costs, of $492 million and $548 million isare included in Generation facilities to be retired, net on Duke Energy Progress' Consolidated Balance SheetSheets as of December 31, 2015.2016 and 2015, respectively.

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Shearon Harris Nuclear Plant Expansion
In 2006, Duke Energy Progress selected a site at Harris to evaluate for possible future nuclear expansion. On February 19, 2008, Duke Energy Progress filed its COL application with the NRC for two Westinghouse AP1000 reactors at Harris, which the NRC docketed for review. On May 2, 2013, Duke Energy Progress filed a letter with the NRC requesting the NRC to suspend its review activities associated with the COL at the Harris site. As a result of the decision to suspend the COL applications, during the second quarter of 2013, Duke Energy Progress recorded a pretax impairment charge of $22 million which represented costs associated with the COL, which were not probable of recovery. The NCUC and PSCSC have approved deferral for $48 million of retail costs which are recorded in Regulatory assets on Duke Energy Progress’ Consolidated Balance Sheets. On November 17, 2016, the FERC approved Duke Energy Progress’ rate recovery request filing for the wholesale ratepayers’ share of the abandonment costs, including a debt only return to be recovered through revised formula rates and amortized over a 15-year period beginning May 1, 2014.

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Duke Energy Florida
FERC Transmission Return on Equity ComplaintHines Chiller Uprate Project
Seminole Electric Cooperative, Inc. and Florida Municipal Power Agency filed multiple complaints with the FERC alleging Duke Energy Florida's current rate of return on equity in transmission formula rates of 10.8 percent is unjust and unreasonable. The latest complaint, filed on August 12, 2014, claims the rate of return on equity should be reduced to 8.69 percent. The FERC consolidated all complaints for the purposes of settlement, hearing and decision. On July 21, 2015, the parties filed with the FERC for approval of a settlement agreement under which (i)May 20, 2016, Duke Energy Florida will payfiled a total of $14.1 million as refundspetition seeking approval to include in base rates the revenue requirement for all periods through December 31, 2014, (ii)a Chiller Uprate Project (Uprate Project) at the rate of return on equity will be 10 percent effective January 1, 2015, and (iii) none of the parties will seek a change in the rate of return on equity prior to January 1, 2018. On November 19, 2015, the FERC approved the settlement agreement resolving all complaints.Hines Energy Complex (Hines). Duke Energy Florida paid $14.1proposed to complete the Uprate Project in two phases: Phase one to include work on Hines units 1-3 and common equipment, to be placed in service during October 2016; and Phase two work on Hines Unit 4 to be placed in service during January 2017. The final combined construction cost estimate for both phases of approximately $150 million is below the cost estimate provided during the need determination proceeding. Duke Energy Florida estimated an annual retail revenue requirement for Phase one and Phase two of approximately $17 million and $3 million, respectively. On August 29, 2016, the FPSC approved the Phase one revenue requirement to be effective in refunds during December 2015.customer rates in November 2016. However, Duke Energy Florida made filings with the FPSC in October 2016 to remove the Uprate Project from customer rates because a portion of the common equipment required for either phase to be considered in service was not completed as expected. Duke Energy Florida filed for recovery of the costs associated with the Uprate Project in February 2017. Duke Energy Florida cannot predict the outcome of this matter.
Citrus County Combined Cycle Facility
On October 2, 2014, the FPSC granted Duke Energy Florida a Determination of Need for the construction of a 1,640 MW combined-cycle natural gas plant in Citrus County, Florida. On May 5, 2015, the Florida Department of Environmental Protection approved Duke Energy Florida's Site Certification Application. The project has received all required permits and approvals and construction began in October 2015. The facility is expected to be commercially available in 2018 at an estimated cost of $1.5 billion, including AFUDC. The project has received all required permits and approvals and construction began in October 2015.
Purchase of Osprey Energy Center
In December 2014, Duke Energy Florida and Osprey Energy Center, LLC, a wholly owned subsidiary of Calpine Corporation (Calpine), entered into an Asset Purchase and Sale Agreement for the purchase of a 599 MW combined-cycle natural gas plant in Auburndale, Florida (Osprey Plant acquisition) for approximately $166 million. On January 30, 2015,August 2, 2016, Duke Energy Florida petitionedfiled a petition seeking approval to include in base rates the FPSC requesting a determination thatrevenue requirements for the Osprey Plant acquisition or, alternatively, the construction of a 320 MW combustion turbine at its existing Suwannee generating facility (Suwannee project) with an estimated cost of $197 million, is the most cost-effective generation alternative to meetbe included in customer bills beginning in February 2017. Duke Energy Florida's remaining generation need priorFlorida estimated the retail revenue requirements for the Osprey acquisition to 2018.be approximately $48 million. On July 21, 2015,November 1, 2016, the FPSC approved the Osprey Plant acquisition aspetition to include the most cost-effective alternative and issued an order of approval on July 31, 2015. On July 24, 2015, the FERC issued an order approving the Osprey Plant acquisition.revenue requirements in base rates. Closing of the acquisition is contingent uponoccurred on January 3, 2017.
Duke Energy Florida received a Civil Investigative Demand from the expirationDepartment of Justice (DOJ) related to alleged violation of the Hart-Scott-Rodino waiting period for the Hart-Scott-Rodino Antitrust Improvements Act of 1976. The DOJ alleged Duke Energy Florida assumed operational control of the Osprey Plant before the waiting period expiration on February 27, 2015. On January 17, 2017, Duke Energy Florida entered into a stipulation agreement to settle with the DOJ for $600,000 without admission of liability. On January 18, 2017, the DOJ filed a complaint and the stipulation in the U.S. District Court for the District of Columbia. The stipulation is expectedsubject to occur bycourt approval. Duke Energy recorded a reserve in the firstfourth quarter of 2017, upon the expiration of an existing Power Purchase Agreement between Calpine and Duke Energy Florida.2016.
FPSC Settlement Agreements
On February 22, 2012, the FPSC approved a settlement agreement (the 2012 Settlement) among Duke Energy Florida, the Florida Office of Public Counsel (OPC)OPC and other customer advocates. The 2012 Settlement was to continue through the last billing cycle of December 2016. On October 17, 2013, the FPSC approved a settlement agreement (the 2013 Settlement) between Duke Energy Florida, Florida OPC and other customer advocates. The 2013 Settlement replaces and supplants the 2012 Settlement and substantially resolves issues related to (i) Crystal River Unit 3, (ii) Levy, (iii) Crystal River 1 and 2 coal units and (iv) future generation needs in Florida. Refer to the remaining sections below for further discussion of these settlement agreements.
Crystal River Unit 3
On February 5, 2013,In December 2014, the FPSC approved Duke Energy Florida announcedFlorida's decision to construct an independent spent fuel storage installation (ISFSI) for the retirement of Crystal River Unit 3. On February 20, 2013, Duke Energy Florida filed with the NRC a certification of permanent cessation of power operations and permanent removal of fuel from the reactor vessel. In December 2013, and March 2014, Duke Energy Florida filed an updated site-specific decommissioning plan with the NRC and FPSC, respectively. The plan, which was approved by the FPSC in November 2014, included a decommissioning cost estimate of $1,180 million, including amounts applicable to joint owners at that time, under the SAFSTOR option. Duke Energy Florida’s decommissioning study assumesretired Crystal River Unit 3 will benuclear plant and approved Duke Energy Florida's request to defer amortization of the ISFSI pending resolution of litigation against the federal government as a result of the Department of Energy's breach of its obligation to accept spent nuclear fuel. The return rate is based on the currently approved AFUDC rate with a return on equity of 7.35 percent, or 70 percent of the currently approved 10.5 percent. The return rate is subject to change if the return on equity changes in SAFSTOR configuration, requiring limited staffing to monitor plant conditions, until the eventual dismantling and decontamination activities to be completed by 2074. This decommissioning approach is currently utilized at a number of retired domestic nuclear power plants and is one of three accepted approaches to decommissioningfuture. In September 2016, the FPSC approved by the NRC.
Pursuantan amendment to the 2013 Settlement authorizing recovery of the ISFSI through the Capacity Cost Recovery Clause. Through December 31, 2016, Duke Energy Florida reclassified allhas deferred approximately $93 million for recovery associated with building the ISFSI.
The regulatory asset associated with the original Crystal River Unit 3 investments, including property, plant and equipment, nuclear fuel, inventory, and other assets,power uprate project will continue to regulatory assets. Portionsbe recovered through the NCRC over an estimated seven years period that began in 2013 with a remaining uncollected balance of the nuclear fuel balances that are under contract for sale were subsequently moved to Other within Current Assets and Other within Investments and Other Assets on the Consolidated Balance Sheets. Duke Energy Florida agreed to forgo recovery of $295$128 million of regulatory assets and an impairment charge was recorded in the second quarter of 2013 for this matter. Duke Energy Florida also accelerated cash recovery of approximately $47 million, net of tax, of the at December 31, 2016.
Crystal River Unit 3 regulatory asset from retail customers during 2014 and 2015, through its fuel clause.Regulatory Asset

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On May 22, 2015, Duke Energy Florida petitioned the FPSC for approval to include in base rates the revenue requirement for the projected $1.298 billion Crystal River Unit 3 regulatory asset as authorized by the 2013 Revised and Restated Stipulation and Settlement Agreement (2013 Agreement). On September 15, 2015, the FPSC approved Duke Energy Florida's motion for approval of a settlement agreement with intervenors to reduce the value of the projected Crystal River Unit 3 regulatory asset to be recovered to $1.283 billion as of December 31, 2015. An impairment charge of $15 million was recognized in the third quarter of 2015 to adjust the regulatory asset balance.
In June 2015, the governor of Florida signed legislation to allow utilities to securitizeissue nuclear asset-recovery bonds to finance the recovery of certain retired nuclear generation assets, with approval of the FPSC. OnIn November 19, 2015, the FPSC issued a financing order approving Duke Energy Florida’s request to securitizeissue nuclear asset-recovery bonds to finance its unrecovered regulatory asset related to Crystal River Unit 3 through a debt issuance at a wholly owned special purpose entity. Securitization wouldNuclear asset-recovery bonds replace the base rate recovery methodology authorized by the 2013 Agreement and result in a lower rate impact to customers with ana recovery period of approximately 20 year recovery period. On February 9,years.

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Pursuant to provisions in Florida Statutes and the FPSC financing order, in 2016, Duke Energy Florida filed a registration statement for the proposed initial public offering of the bonds. Use of the registration statement for purposes of the offering is subject to review and declaration of its effectiveness by the SEC.formed Duke Energy Florida expectsProject Finance, LLC (DEFPF), a wholly owned, bankruptcy remote special purpose subsidiary for the purpose of issuing nuclear asset-recovery bonds. In June 2016, DEFPF issued $1,294 million aggregate principal amount of senior secured bonds (nuclear asset-recovery bonds) to issue securitization bonds infinance the first halfrecovery of 2016.
In December 2014, the FPSC approved Duke Energy Florida's decisionCrystal River 3 regulatory asset.
In connection with this financing, net proceeds to construct an independent spent fuel storage installation (ISFSI) and approved Duke Energy Florida's requestDEFPF of approximately $1,287 million, after underwriting costs, were used to defer amortization of the ISFSI pending resolution of its litigation against the federal government as a result of the Department of Energy's breach of its obligation to accept spentacquire nuclear fuel. The return rate will be based on the currently approved AFUDC rate with a return on equity of 7.35 percent, or 70 percent of the currently approved 10.5 percent. The return rate is subject to change if the return on equity changes in the future. Through December 31, 2015asset-recovery property from Duke Energy Florida has deferred approximately $60 million for recovery associated with buildingand to pay transaction related expenses. The nuclear asset-recovery property includes the ISFSI.
The regulatory asset associated with the original Crystal River Unit 3 power uprate project will continueright to impose, bill, collect and adjust a non-bypassable nuclear asset-recovery charge, to be recovered throughcollected on a per kilowatt-hour basis, from all Duke Energy Florida retail customers until the NCRC over an estimated seven-year period thatbonds are paid in full. Duke Energy Florida began collecting the nuclear asset-recovery charge on behalf of DEFPF in 2013 with a remaining uncollected balance at December 31, 2015 of $169 million.customer rates in July 2016.
See Notes 6 and 17 for additional information.
Customer Rate Matters
Pursuant to the 2013 Settlement, Duke Energy Florida will maintain base rates at the current level through the last billing period of 2018, subject to the return on equity range of 9.5 percent to 11.5 percent, with exceptions for base rate increases for the recovery of the Crystal River Unit 3 regulatory asset beginning no later than 2017, unless the regulatory asset is securitized as discussed above, and base rate increases for new generation through 2018, per the provisions of the 2013 Settlement. Duke Energy Florida is not required to file a depreciation study, fossil dismantlement study or nuclear decommissioning study until the earlier of the next rate case filing or March 31, 2019. The 20122013 Settlement also provided for a $150 million increase in base revenue effective with the first billing cycle of January 2013. If Duke Energy Florida’s retail base rate earnings fall below the return on equity range, as reported on a FPSC-adjusted or pro forma basis on a monthly earnings surveillance report, it may petition the FPSC to amend its base rates during the term of the 2013 Settlement.
Duke Energy Florida agreed to refund $388 million to retail customers through its fuel clause, as required by the 2012 Settlement. At December 31, 2015, $70 million remains to be refunded and is included in Regulatory liabilities within Current Liabilities on the Consolidated Balance Sheets.
Levy Nuclear Project
On July 28, 2008, Duke Energy Florida applied to the NRC for a COL for two Westinghouse AP1000 reactors at Levy. In 2008, the FPSC granted Duke Energy Florida’s petition for an affirmative Determination of Need and related orders requesting cost recovery under Florida’s nuclear cost-recovery rule, together with the associated facilities, including transmission lines and substation facilities. Design changes have been identified in the Westinghouse AP1000 certified design that must be addressed beforeIn October 2016, the NRC can complete its review ofissued COLs for the proposed Levy COL application. These design changes set the schedule for completion of the NRC COL application reviewNuclear Plant Units 1 and issuance of the Levy COL. Based on the current review schedule, the Levy COL is currently expected by late 2016.2.
On January 28, 2014, Duke Energy Florida terminated the Levy engineering, procurement and construction agreement (EPC). Duke Energy Florida may be required to pay for work performed under the EPC and to bring existing work to an orderly conclusion, including but not limited to costs to demobilize and cancel certain equipment and material orders placed. Duke Energy Florida recorded an exit obligation of $25 million in first quarter 2014 for the termination of the EPC. This liability was recorded within Other in Deferred Credits and Other Liabilities with an offset primarily to Regulatory assets on the Consolidated Balance Sheets. Duke Energy Florida is allowed to recover reasonable and prudent EPC cancellation costs from its retail customers.
The 2012 Settlement provided that Duke Energy Florida include the allocated wholesale cost of Levy as a retail regulatory asset and include this asset as a component of rate base and amortization expense for regulatory reporting. In accordance with the 2013 Settlement, Duke Energy Florida ceased amortization of the wholesale allocation of Levy investments against retail rates. In the second quarter of 2013, Duke Energy Florida recorded a pretax charge of $65 million to write off the wholesale portion of Levy investments. This amount is included in Impairment charges on Duke Energy Florida's Statements of Operations and Comprehensive Income.
On October 27, 2014, the FPSC approved Duke Energy Florida rates for 2015 for Levy as filed and consistent with those established in the 2013 Revised and Restated Settlement Agreement. Recovery of the remaining retail portion of the project costs may occur over five5 years from 2013 through 2017. Duke Energy Florida has an ongoing responsibility to demonstrate prudency related to the wind down of the Levy investment and the potential for salvage of Levy assets. As of December 31, 2015,2016, Duke Energy Florida has a net uncollected investment in Levy of approximately $183$219 million, including AFUDC. Of this amount, $105$119 million related to land and the COL is included in Net, property, plant and equipment and will be recovered through base rates and $78$100 million is included in Regulatory assets within Regulatory Assets and Deferred Debits on the Consolidated Balance Sheets and will be recovered through the NCRC.

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On April 16, 2015, the FPSC approved Duke Energy Florida’s petition to cease collection of the Levy Nuclear Project fixed charge beginning with the first billing cycle in May 2015. On August 18, 2015, the FPSC approved leaving the Levy Nuclear Project portion of the Nuclear Cost Recovery ClauseNCRC charge at zero dollars for 2016 and 2017, consistent with the 2013 Settlement. Duke Energy Florida will submit by May 2017 a true-up of Levy Nuclear Project costs or credits to be recovered no earlier than January 2018. To the extent costs become known after May 2017, Duke Energy Florida will petition for recovery at that time.
Crystal River 1 and 2 Coal Units
Duke Energy Florida has evaluated Crystal River 1 and 2 coal units for retirement in order to comply with certain environmental regulations. Based on this evaluation, those units will likely be retired by 2018. Once those units are retired Duke Energy Florida will continue recovery of existing annual depreciation expense through the end of 2020. Beginning in 2021, Duke Energy Florida will be allowed to recover any remaining net book value of the assets from retail customers through the Capacity Cost Recovery Clause. In April 2014, the FPSC approved Duke Energy Florida's petition to allow for the recovery of prudently incurred costs to comply with the Mercury and Air Toxics Standard through the Environmental Cost Recovery Clause.
Cost of Removal Reserve
The 2012 Settlement and the 2013 Settlement provide Duke Energy FloridaOhio
East Bend Coal Ash Basin Filing
On December 2, 2016, Duke Energy Kentucky filed with the discretionKPSC a request for a CPCN for construction projects necessary to reduceclose and repurpose an ash basin at the East Bend necessitated by current and proposed EPA regulations. Duke Energy Kentucky is targeting a completion date in fourth quarter 2018 for these projects and estimates a total cost of removal amortization expenseapproximately $93 million. Duke Energy Kentucky has requested an order to be issued by April 30, 2017.

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Base Rate Case
In connection with Duke Energy Ohio’s deployment of SmartGrid network, consisting of investments in AMI and distribution automation, a rider was established to recover these investments and return expected savings to customers. A stipulation updating this rider was approved by the PUCO in 2012, whereby Duke Energy Ohio committed to filing a base electric distribution case within one year of full deployment of SmartGrid. On October 22, 2015, PUCO staff concluded that full deployment had occurred thereby, absent relief by the PUCO, Duke Energy Ohio would be required to file a base electric rate case. Pursuant to an order (PUCO order) authorizing a modification in the filing date, Duke Energy Ohio notified the PUCO of its intent to file an electric distribution rate case in Ohio. The base rate case application and supporting testimony will be filed March 2, 2017, and March 16, 2017, respectively. Duke Energy Ohio cannot predict the outcome of this matter.
Natural Gas Pipeline Extension
Duke Energy Ohio is proposing to install a new natural gas pipeline in its Ohio service territory to increase system reliability and enable the retirement of older infrastructure. The proposed project involves the installation of a natural gas line and is estimated to cost between $86 million and $110 million, excluding AFUDC. On September 13, 2016, Duke Energy Ohio filed with the Ohio Power Siting Board for a certain portionapproval of one of two proposed routes. If approved, construction of the cost of removal reserve until the earlier of its applicable cost of removal reserve reaches zero or the expiration of the 2013 Settlement.pipeline extension is expected to be completed by 2019.
Advanced Metering Infrastructure
On April 25, 2016, Duke Energy Florida could not reduce amortization expense ifKentucky filed with the reduction would cause it to exceedKPSC an application for approval of a CPCN for the appropriate high pointconstruction of the return on equity range.AMI. Duke Energy Florida recognizedKentucky anticipates that the estimated $49 million project, if approved, will take about two years to complete. Duke Energy Kentucky also requested approval to establish a reduction in amortization expenseregulatory asset of $114approximately $10 million for the year ended December 31, 2013.remaining book value of existing meter equipment and inventory that will be replaced. On July 20, 2016, the Kentucky Attorney General, the only intervenor in the proceeding, moved to dismiss the application. Duke Energy Florida had no cost of removal reserves eligible for amortizationKentucky filed its opposition to income remaining after December 31, 2013.
the Kentucky Attorney General's motion to dismiss on July 27, 2016. On September 28, 2016, the KPSC denied the Kentucky Attorney General's motion to dismiss and granted Duke Energy OhioKentucky's motion to file rebuttal testimony. Duke Energy Kentucky and the Kentucky Attorney General entered into a stipulation resolving the matters raised in the application. An evidentiary hearing was held on December 8, 2016. Duke Energy Kentucky cannot predict the outcome of this matter.
Accelerated Natural Gas Service Line Replacement Rider
On January 20, 2015, Duke Energy Ohio filed an application for approval of an accelerated natural gas service line replacement program (ASRP). The ASRP is modeled after the accelerated main replacement program (AMRP), which concluded on December 31, 2015. Under the ASRP, Duke Energy Ohio proposesproposed to replace certain natural gas service lines on an accelerated basis. The program is proposed to last 10 years. Through the ASRP,basis over a 10-year period. Duke Energy Ohio also proposesproposed to complete preliminary survey and investigation work related to natural gas service lines that are customer-ownedcustomer owned and for which it does not have valid records and, further, to relocate interior natural gas meters to suitable exterior locations where such relocation can be accomplished. Duke Energy Ohio projectsOhio's current projected total capital and operations and maintenance expenditures under the ASRP to approximate $320are approximately $240 million. The filing also seekssought approval of Rider ASRP the rider through which expenditures would be recovered. Similar to the Rider AMRP methodology,recover related expenditures. Duke Energy Ohio proposesproposed to update Rider ASRP on an annual basis. Duke Energy Ohio’s application is pending before the PUCO and it is uncertain when an order will be issued.
Intervenors opposeopposed the ASRP, primarily because they believe the program is neither required nor necessary under federal pipeline regulation. On October 26, 2016, the PUCO issued an order denying the proposed ASRP. The hearing concluded on November 19, 2015PUCO did, however, encourage Duke Energy Ohio to work with the PUCO Staff and initial and reply briefs wereintervenors to identify a reasonable solution for the risks attributed to service line leaks caused by corrosion. Duke Energy Ohio filed with briefing complete onan application for rehearing of the PUCO decision. In December 23, 2015.
2016, the PUCO granted the request for the purpose of further review. Duke Energy Ohio cannot predict the outcome of this matter.
Energy Efficiency Cost Recovery
On March 28, 2014, Duke Energy Ohio filed an application for recovery of program costs, lost distribution revenue and performance incentives related to its energy efficiency and peak demand reduction programs. These programs are undertaken to comply with environmental mandates set forth in Ohio law. After a comment period, the PUCO approved Duke Energy Ohio’s application, but found that Duke Energy Ohio was not permitted to use banked energy savings from previous years in order to calculate the amount of allowed incentive. This conclusion represented a change to the cost recovery mechanism that had been agreed to by intervenors and approved by the PUCO in previous cases. As a result ofThe PUCO granted the PUCO’s decision,applications for rehearing filed by Duke Energy Ohio reversed $23 million in revenues deemed to be refundable for the period between January 2013 and April 2015 in second quarter 2015. The PUCO granted Duke Energy Ohio's application for rehearingan intervenor on July 8, 2015. Substantive ruling on the application for rehearing is pending. The PUCO granted all applications for rehearing for future consideration. On January 6, 2016, Duke Energy Ohio and PUCO Staff entered into a stipulation pending PUCO approval, resolving the issues related to, among other things, performance incentives and the PUCO Staff audit of 2013 costs. Based on thisthe stipulation, in December 2015, Duke Energy Ohio re-established approximately $20 million of the revenues that had been reversed in the second quarter. A hearing onOn October 26, 2016, the PUCO issued an order approving the stipulation is scheduledwithout modification. Intervenors requested rehearing of the PUCO decision and, in December 2016, the PUCO granted rehearing for March 10, 2016.the purpose of further review. Duke Energy Ohio cannot predict the outcome of this matter.
East Bend Station
On December 30, 2014, Duke Energy Ohio acquired The Dayton Power and Light Company's (DP&L) 31 percent interest in the jointly owned East Bend Station for approximately $12.4 million. The purchase price, in accordance with FERC guidelines, was reflected with the net purchase amount as an increase to property, plant and equipment as of December 31, 2014 and with the DP&L's historical original cost as an increase to property, plant and equipment and accumulated depreciation as of December 31, 2015. On August 20, 2015, the KPSC approved Duke Energy Kentucky's application to use the purchase price as the value of the newly acquired interest in the East Bend Station for depreciation purposes and ratemaking.

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Combined Notes To Consolidated Financial Statements – (Continued)

2014 Electric Security Plan (ESP)
In April 2015, the PUCO modified and approved Duke Energy Ohio's proposed ESP,electric security plan (ESP), with a three-year term and an effective date of June 1, 2015. The PUCO approved a competitive procurement process for SSO load, a distribution capital investment rider and a tracking mechanism for incremental distribution expenses caused by major storms. The PUCO order also approved a placeholder tariff for a price stabilization rider, but denied Duke Energy Ohio's specific request to include Duke Energy Ohio's entitlement to generation from OVEC in the rider at this time; however, the order allows Duke Energy Ohio to submit additional information to request recovery in the future. On May 4, 2015, Duke Energy Ohio filed an application for rehearing requesting the PUCO to modify or amend certain aspects of the order. On May 28, 2015, the PUCO granted all applications for rehearing filed in the case for future consideration. Duke Energy Ohio cannot predict the outcome of the appeals in this matter.
During May and November 2015,2016, Duke Energy Ohio completed two competitive bidding processes with results approved by the PUCO to procure a portion of the supply for its SSO load for the term of the ESP. In 2016, Duke Energy Ohio also issued requests for proposal (RFP) to serve a portion of the load attributed to its customers on the state’s percentage of income payment plan. This RFP was issued consistent with state law enacted in 2016.

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Combined Notes To Consolidated Financial Statements – (Continued)

2012 Natural Gas Rate CaseCase/Manufactured Gas Plant Cost Recovery
On November 13, 2013, the PUCO issued an order approving a settlement among Duke Energy Ohio, the PUCO Staff and intervening parties (the Gas Settlement). The Gas Settlement provided for (i) no increase in base rates for natural gas distribution service and (ii) a return on equity of 9.84 percent. The Gas Settlement provided for a subsequent hearing on Duke Energy Ohio’s request for ridernatural gas base rate case and authorizing the recovery of costs incurred between 2008 and 2012 for environmental investigation and remediation costs associated with itsof two former MGP sites. The PUCO order also authorized Duke Energy Ohio to recover $56 million excluding carryingcontinue deferring MGP environmental investigation and remediation costs of environmental remediation costs. The MGP rider became effective in April 2014 for a five-year period. On March 31, 2014, Duke Energy Ohio filed an application with the PUCOincurred subsequent to 2012 and to submit annual filings to adjust the MGP rider for investigation and remediation costs incurred in 2013.
Certain consumer groupsfuture costs. Intervening parties appealed the PUCO’sthis decision authorizing the MGP rider to the Ohio Supreme Court and asked the court to stay implementation of the PUCO’s orderthat appeal remains pending. Oral argument is scheduled for February 28, 2017. Incurred and collections underprojected investigation and remediation expenses at these MGP sites that have not been collected through the MGP rider pending their appeal. The Ohio Supreme Court granted the motion to stayare approximately $99 million and subsequently required the posting of a bond to effectuate the stay. When the bond was not posted, the PUCO approvedare recorded as Regulatory assets on Duke Energy Ohio’s request, in January 2015, to reinstate collections under the MGP rider and Duke Energy Ohio resumed billings. Amounts collected prior to the suspensionOhio's Consolidated Balance Sheet as of the rider were immaterial. On MarchDecember 31, 2015, Duke Energy Ohio filed an application to adjust the MGP rider to recover remediation costs incurred in 2014.2016. Duke Energy Ohio cannot predict the outcome of this matter.
The PUCO order also contained deadlines for completing the appealMGP environmental investigation and remediation costs at the MGP sites. For the property known as the East End site, the PUCO order established a deadline of December 31, 2016. The PUCO order authorized Duke Energy Ohio to seek to extend these deadlines due to certain circumstances. On May 16, 2016, Duke Energy Ohio filed an application to extend the deadline for cost recovery applicable to the East End site. In December 2016, the PUCO approved the request, extending the deadline to complete the remediation work until December 31, 2019. In January 2017, intervening parties filed for rehearing of the PUCO's decision. On February 8, 2017, the PUCO denied the rehearing request. As of December 31, 2016, $46 million of the regulatory asset represents future remediation cost expected to be incurred at the East End site. Duke Energy Ohio cannot predict the outcome of this matter.
Regional Transmission Organization (RTO) Realignment
Duke Energy Ohio, including Duke Energy Kentucky, transferred control of its transmission assets from MISO to PJM Interconnection, LLC (PJM), effective December 31, 2011.
On December 22, 2010, the KPSC approved Duke Energy Kentucky’s request to effect the RTO realignment, subject to a commitment not to seek double recovery in a future rate case of the transmission expansion fees that may be charged by MISO and PJM in the same period or overlapping periods.
On May 25, 2011, the The PUCO approved a settlement between Duke Energy Ohio, Ohio Energy Group, the Office of Ohio Consumers’ Counsel and the PUCO Staff related to Duke Energy Ohio’s recovery of certain costs of the RTORegional Transmission Organization (RTO) realignment via a non-bypassable rider. Duke Energy Ohio is allowed to recover all MISO Transmission Expansion Planning (MTEP) costs, including but not limited to Multi Value Project (MVP) costs, directly or indirectly charged to Ohio customers. Duke Energy Ohio also agreed to vigorously defend against any charges for MVP projects from MISO.
Upon its exit from The KPSC also approved a request to effect the RTO realignment, subject to a commitment not to seek double recovery in a future rate case of the transmission expansion fees that may be charged by MISO on December 31, 2011, Duke Energy Ohio recorded a liability for its exit obligation and share of MTEP costs, excluding MVP. This liability was recorded within OtherPJM in Current liabilities and Other in Deferred credits and other liabilities on Duke Energy Ohio’s Consolidated Balance Sheets.the same period or overlapping periods.
The following table provides a reconciliation of the beginning and ending balance of Duke Energy Ohio’s recorded obligations related toliability for its withdrawal from MISO.exit obligation and share of MTEP costs, excluding MVP, recorded within Other in Current liabilities and Other in Deferred credits and other liabilities on the Consolidated Balance Sheets. The retail portions of MTEP costs billed by MISO are recovered by Duke Energy Ohio through a non-bypassable rider. As of December 31, 20152016, and 2015, $71 million and $72 million isare recorded as ain Regulatory assetassets on Duke Energy Ohio's Consolidated Balance Sheets.Sheets, respectively.
  Provisions/
 Cash
    Provisions/
 Cash
  
(in millions)December 31, 2014
 Adjustments
 Reductions
 December 31, 2015
December 31, 2015
 Adjustments
 Reductions
 December 31, 2016
Duke Energy Ohio$94
 $3
 $(5) $92
$92
 $3
 $(5) $90
MVP. MISO approved 17 MVP proposals prior to Duke Energy Ohio’s exit from MISO on December 31, 2011. Construction of these projects is expected to continue through 2020. Costs of these projects, including operating and maintenance costs, property and income taxes, depreciation and an allowed return, are allocated and billed to MISO transmission owners.
On December 29, 2011, MISO filed a tariff with the FERC providing for the allocation of MVP costs to a withdrawing owner based on monthly energy usage. The FERC set for hearing (i) whether MISO’s proposed cost allocation methodology to transmission owners who withdrew from MISO prior to January 1, 2012, is consistent with the tariff at the time of their withdrawal from MISO and, (ii) if not, what the amount of and methodology for calculating any MVP cost responsibility should be. In 2012, MISO estimated Duke Energy Ohio’s MVP obligation over the period from 2012 to 2071 at $2.7 billion, on an undiscounted basis. On July 16, 2013, a FERC Administrative Law Judge (ALJ) issued an initial decision. Under this initial decision, Duke Energy Ohio would be liable for MVP costs. Duke Energy Ohio filed exceptions to the initial decision, requesting FERC to overturn the ALJ’s decision.
On October 29, 2015, the FERC issued an order reversing the ALJ's decision. The FERC ruled the cost allocation methodology is not consistent with the MISO tariff and that Duke Energy Ohio has no liability for MVP costs after its withdrawal from MISO. On November 30, 2015,May 19, 2016, the FERC denied the request for rehearing filed by MISO and the MISO Transmission Owners. On July 15, 2016, the MISO Transmission Owners filed a petition for review with the FERC a requestU.S. Court of Appeals for rehearing.the Sixth Circuit. Duke Energy Ohio cannot predict the outcome of this matter.

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Combined Notes To Consolidated Financial Statements – (Continued)

FERC Transmission Return on Equity and MTEP Cost SettlementDuke Energy Indiana
Coal Combustion Residual Plan
On October 14, 2011,March 17, 2016, Duke Energy OhioIndiana filed with the IURC a request for approval of its first group of federally mandated Coal Combustion Residual (CCR) rule compliance projects (Phase I CCR Compliance Projects) to comply with the EPA's CCR rule. The projects in this Phase I filing are CCR compliance projects, including the conversion of Cayuga and Gibson Stations to dry bottom ash handling and related water treatment. Duke Energy Kentucky submitted with the FERC proposed modifications to the PJM Interconnection Open Access Transmission Tariff pertaining toIndiana has requested timely recovery of the transmission revenue requirement as PJM transmission owners. The filing was madeapproximately $380 million in connectionretail capital costs and incremental operating and maintenance costs, including AFUDC, under a federal mandate tracker which provides for timely recovery of 80 percent of such costs and deferral with carrying costs of 20 percent of such costs for recovery in a subsequent retail base rate case. On January 24, 2017, Duke Energy Ohio'sIndiana and Duke Energy Kentucky's move from MISO to PJM effective December 31, 2011. On April 24, 2012, the FERC issued an order accepting the proposed filing effective January 1, 2012, except that the order denied a request to recover certain costs associated with the move from MISO to PJM without prejudice to the right to submit another filing seeking such recovery and including certain additional evidence, and set the rate of return on equity of 12.38 percent for settlement and hearing. On April 16, 2015, the FERC approvedvarious Intervenors filed a settlement agreement betweenwith the IURC. Terms of the settlement include recovery of 60 percent of the estimated CCR compliance construction project capital costs through existing rider mechanisms and deferral of 40 percent of these costs until Duke Energy Ohio,Indiana's next general retail rate case. The deferred costs will earn a return based on Duke Energy Kentucky and six PJM transmission customers with loadIndiana's long-term debt rate of 4.73 percent until costs are included in retail rates, at which time the deferred costs will earn a full return. Costs are to be capped at $365 million, plus actual AFUDC. Costs above the cap may be recoverable in the Duke Energy Ohio and Duke Energy Kentucky zone. The principal termsnext rate case. Terms of the settlement agreement are that, effective upon the date of FERC approval, (i) the return on equity for wholesale transmission service is reduced to 11.38 percent, (ii) the settling parties agreed not to seek a change in the return on equity that would be effective prior to June 1, 2017, and (iii)also require Duke Energy OhioIndiana to perform certain reporting and groundwater monitoring. The settlement is subject to approval by the IURC. An evidentiary hearing was held on February 23, 2017. Duke Energy Kentucky will recover 30 percentIndiana cannot predict the outcome of the wholesale portion of costs arising from their obligation to pay any portion of the costs of projects included in any MTEP that was approved prior to the date of Duke Energy Ohio's and Duke Energy Kentucky's integration into PJM.
Duke Energy Indianathis matter.
Edwardsport Integrated Gasification Combined Cycle (IGCC) Plant
On November 20, 2007, the IURC granted Duke Energy Indiana a CPCN for the construction of the Edwardsport IGCC Plant. The Citizens Action Coalition of Indiana, Inc., Sierra Club, Inc., Save the Valley, Inc., and Valley Watch, Inc. (collectively, the Joint Intervenors) were intervenors in several matters related to the Edwardsport IGCC Plant. The Edwardsport IGCC Plant was placed in commercial operation in June 2013. Costs for the Edwardsport IGCCIntegrated Gasification Combined Cycle (IGCC) Plant are recovered from retail electric customers via a tracking mechanism the IGCC rider.
The ninth semi-annual IGCC rider order was appealed by the Joint Intervenors. On September 8, 2014, the Indiana Court of Appeals remanded the IURC order in the ninth IGCC rider proceeding back to the IURC for further findings. On February 25, 2015, the IURC issued a new order upholding its prior decision and provided additional detailed findings. Joint Intervenors appealed this remand order to the Indiana Court of Appeals. On September 23, 2015, the Indiana Court of Appeals affirmed the IURC remand decision on one of the key financial issues. The Indiana Court of Appeals found that there was sufficient evidence for the IURC to find that the three-month delay in construction for this time period was not unreasonable and therefore the costs of such delay should be borne(IGCC rider) with updates filed by Duke Energy Indiana customers.Indiana. The Indiana Court of Appeals found that the IURC did not support its findings regarding the ratemaking impact of the tax in-service declaration and reversed and remanded this issue back to the IURC, with direction to hold further proceedings and issue additional findings on the issue. On December 10, 2015, the Indiana Court of Appeals denied a request for rehearing by Joint Intervenors, and the decisionIGCC Plant was not further appealed. The proceeding will be remanded to the IURC for further proceedings and additional findings on the tax in-service issue.placed into commercial operation in June 2013.
The 10th semi-annual IGCC rider order was also appealed by the Joint Intervenors. On August 21, 2014, the Indiana Court of Appeals affirmed the IURC order in the 10th IGCC rider proceeding and on October 29, 2014, denied the Joint Intervenors' request for rehearing. The Joint Intervenors requested the Indiana Supreme Court to review the decision, which was denied on April 23, 2015, concluding the appeal.
Duke Energy Indiana has filed the 14th and 15th semi-annualseveral intervenors agreed upon a settlement (IGCC settlement) in 2015 to resolve disputes related to five IGCC rider proceedings. Theriders (the 11th through 15th semi-annual IGCC riders15th) and a subdocket to Duke Energy Indiana's fuel adjustment clause are currently in various stages of approval byclause. The settlement agreement resolved disputes related to the IURC in the filing process. Issues in these filings include the determination on whether the IGCC plant was properly declared in servicein-service for ratemaking purposes in June 2013, and a review ofas well as the operational performance of the plant. On September 17, 2015, Duke Energy Indiana, the Office of Utility Consumer Counselor, the Industrial Group and Nucor Steel Indiana reached aThe IGCC settlement agreement to resolve these pending issues. On January 15, 2016, The Citizens Action Coalition of Indiana, Inc., Sierra Club, Save the Valley and Valley Watch joined the settlement. The proposed settlement will resultresulted in customers not being billed for previously incurred plant operating costs of $87.5 million and for additionalpayments and commitments from Duke Energy Indiana payments and commitments of $5.5 million for attorneys’ fees and amounts to fund consumer programs. Attorneys’ fees and expenses for the new settling parties will be addressed in a separate proceeding.programs funding. Duke Energy Indiana recorded $87.5recognized pretax impairment and related charges of $93 million within Impairment charges and $5.5 million within Other Income and Expenses, net in the Consolidated Statements of Operations and Comprehensive Income for the twelve months ended December 31, 2015. Duke Energy Indiana also recorded an $80.3 million reduction of Regulatory assets within Regulatory Assets and Deferred Debits, an additional $7.2 million of Other within Deferred Credits and Other Liabilities and $5.5 million of Accounts payable within Current Liabilities on the Consolidated Balance Sheets at December 31, 2015. Additionally, under the proposedIGCC settlement, the recovery of operating and maintenance expenses and ongoing maintenance capital at the plant are subject to certain caps during the years of 2016 and 2017. The revisedIGCC settlement also includes a commitment to either retire or stop burning coal by December 31, 2022, at the Gallagher Station. Pursuant to the IGCC settlement, the in-service date used for accounting and ratemaking will remain as June 2013. Remaining deferred costs will be recovered over eight years and not earn a carrying cost. On August 24, 2016, the IURC approved the settlement in full with no changes or conditions. The settlementorder was not appealed and the proceeding is subject to IURC approval which is expected in the first half of 2016.concluded. As of December 31, 2015,2016, deferred costs related to the project are approximately $128$161 million. FutureUnder the IGCC settlement, future IGCC riders will be filed annually, rather than every six months, with the next filing scheduled for first quarter 2017.
Duke Energy Indiana cannot predict the outcome of the settlement of these matters or futureThe ninth semi-annual IGCC rider proceedings.order was appealed by various intervenors and the matter was remanded to the IURC for further proceedings and additional findings on a tax in-service issue. On February 2, 2017, the IURC issued an order upholding the original decision, finding that an estimate of impact on customer rates due to the federal income tax in-service determination was reasonable. The intervenors could appeal this order.
FERC Transmission Return on Equity Complaint
Customer groups have filed with the FERC complaints against MISO and its transmission-owning members, including Duke Energy Indiana, alleging, among other things, that the current base rate of return on equity earned by MISO transmission owners of 12.38 percent is unjust and unreasonable. The latest complaint, filed on February 12, 2015, claims the base rate of return on equity should be reduced to 8.67 percent and requests a consolidation of complaints. The motion to consolidate complaints was denied. On January 5, 2015, the FERC issued an order accepting the MISO transmission owners 0.50 percent adder to the base rate of return on equity based on participation in an RTO subject to it being applied to a return on equity that is shown to be just and reasonable in the pending return on equity complaint.complaints. A hearing in the base return on equity proceeding was held in August 2015. On December 22, 2015, the presiding FERC ALJ in the first complaint issued an Initial Decision in which hethe base rate of return on equity was set at 10.32 percent. On September 28, 2016, the Initial Decision in the first complaint was affirmed by FERC. On June 30, 2016, the presiding FERC ALJ in the second complaint issued an Initial Decision setting the base rate of return on equity at 10.329.70 percent. The Initial Decision will be reviewed byin the FERC.second complaint is pending FERC review. Duke Energy Indiana currently believes these matters will not have an immateriala material impact on its results of operations, cash flows and financial position.

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Combined Notes To Consolidated Financial Statements – (Continued)

Grid Infrastructure Improvement Plan
On August 29, 2014, pursuant to a new statute, Duke Energy Indiana filed a seven-year grid infrastructure improvement plan with the IURC with an estimated cost of $1.9 billion, focusing on the reliability, integrity and modernization of the transmission and distribution system. The plan also provided for cost recovery through a transmission and distribution rider (T&D Rider). In May 2015, the IURC denied the original proposal due to an insufficient level of detailed projects and cost estimates in the plan. On December 7, 2015, Duke Energy Indiana filed a revised infrastructure improvement plan with an estimated cost of $1.8 billion in response to guidance from IURC orders and the Indiana Court of Appeals decisions related to this new statute. The revised plan uses a combination of advanced technology and infrastructure upgrades to improve service to customers and provide them with better information about their energy use. The plan is subject to approval of the IURC, with an order expected in July 2016.It also provides for cost recovery through a T&D Rider. In March 2016, Duke Energy Indiana cannot predictentered into a settlement with all parties to the outcomeproceeding except the Citizens Action Coalition of this matter.Indiana, Inc. The settlement agreement decreased the capital expenditures eligible for timely recovery of costs in the seven-year plan to approximately $1.4 billion, including the removal of an AMI project. Under the settlement, the return on equity to be used in the T&D Rider is 10 percent. The IURC approved the settlement and issued a final order on June 29, 2016. The order was not appealed and the proceeding is concluded.

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Combined Notes To Consolidated Financial Statements – (Continued)

The settlement also provided for deferral accounting for depreciation and post-in-service carrying costs for AMI projects outside the seven-year plan. Duke Energy Indiana withdrew its request for a regulatory asset for current meters and will retain any savings associated with future AMI installation until the next retail base rate case, which is required to be filed prior to the end of the seven-year plan. In 2016, Duke Energy Indiana decided to implement the AMI project. This decision resulted in a pretax impairment charge related to existing or non-AMI meters of approximately $8 million, based in part on Duke Energy Indiana's intent to file a base rate case in 2022 under the approved T&D Rider plan. At December 31, 2016, Duke Energy Indiana's remaining net book value of non-AMI meters is approximately $46 million which will be depreciated through 2022. In the event that Duke Energy Indiana was to file a base rate case earlier than 2022, it may incur additional impairment charges.
Other Regulatory Matters
Atlantic Coast Pipeline
On September 2, 2014, Duke Energy, Dominion Resources (Dominion), Piedmont and Southern Company Gas, formerly AGL Resources Inc., announced the formation of a company, ACP to build and own the proposed Atlantic Coast Pipeline (the(ACP pipeline), a 564-milean approximately 600-mile interstate natural gas pipeline.pipeline running from West Virginia to North Carolina. The ACP pipeline is designed to meet the needs identified in requests for proposalsRFPs by Duke Energy Carolinas, Duke Energy Progress and Piedmont. The ACP pipeline development costs are estimated between $5.0 billion to $5.5 billion. Dominion will build and operate the pipeline and hasACP pipeline. Originally, Dominion held a 45 percent membership interest in ACP, Duke Energy held a 40 percent interest, Piedmont held a 10 percent interest and Southern Company Gas held a 5 percent interest. On October 3, 2016, Duke Energy and Piedmont completed a merger transaction that resulted in Piedmont becoming a wholly owned subsidiary of Duke Energy. In connection with this transaction, and pursuant to terms of the ACP partnership agreement, Piedmont transferred 3 percent of its membership interest in ACP to Dominion in exchange for approximately $14 million. As a result of this transfer, Dominion maintains a leading ownership percentage in ACP.ACP of 48 percent and Duke Energy hasowns a 4047 percent ownership interest in ACP through its Commercial PortfolioGas Utilities and Infrastructure segment. Piedmont owns 10Southern Company Gas maintains a 5 percent and the remaining share is owned by AGL Resources. interest. See Note 2 for additional information related to Duke Energy's acquisition of Piedmont.
Duke Energy Carolinas, and Duke Energy Progress and Piedmont, among others, will be customers of the pipeline. Purchases will be made under several 20-year supply contracts, subject to state regulatory approval. In October 2014, the NCUC and PSCSC approved the Duke Energy Carolinas and Duke Energy Progress requests to enter into certain affiliate agreements, pay compensation to ACP and to grant a waiver of certain Code of Conduct provisions relating to contractual and jurisdictional matters. On September 18, 2015, ACP filed an application with the FERC requesting a CPCN authorizing ACP to construct the pipeline. ACP requestedIn December 2016, FERC issued a preliminary Environmental Impact Statement (EIS) indicating that the proposed pipeline would not cause significant harm to the environment or protected populations. The final EIS is expected by June 30, 2017. FERC approval of the application by July 1, 2016, to enable constructionis expected within 90 days of the issuance of the final EIS. Construction is projected to begin byonce FERC approval is received with a targeted in-service date in the second half of 2019. ACP executed a construction agreement in September 2016 with an in-service date of on or before November 1, 2018. ACPand is working with various agencies to develop the final pipeline route. ACP also requested approval of an open access tariff and the precedent agreements it entered into with future pipeline customers, including Duke Energy Carolinas and Duke Energy Progress.
On October 24, 2015, Duke Energy entered into a Merger Agreement with Piedmont. The ACP partnership agreement includes provisions to allow Dominion an option to purchase See Notes 12 and 17 for additional ownership interest in ACP to maintain a leading ownership percentage. Any change in ownership interests is not expected to be material to Duke Energy. Refer to Note 2 for further information related to Duke Energy's proposed acquisition of Piedmont.information.
Sabal Trail Transmission LLC (Sabal Trail) Pipeline
On May 4, 2015, Duke Energy acquired a 7.5 percent ownership interest in Sabal Trail Transmission, LLC (Sabal Trail) from Spectra Energy Partners, LP, a master limited partnership, formed by Spectra Energy Corp. Spectra Energy Partners, LP holds a 50 percent ownership interest in the proposed 500-mile Sabal Trail natural gas pipeline. Spectra Energy will continue to own 59.5 percent of the Sabal Trail pipeline and NextEra Energy will own the remaining 33 percent.has a 42.5 percent ownership interest. Sabal Trail is a joint venture that is constructing a 515-mile natural gas pipeline (Sabal Trail pipeline) to transport natural gas to Florida. Total estimated project costs are approximately $3.2 billion. The Sabal Trail pipeline will traverse Alabama, Georgia and Florida to meet rapidly growing demand for natural gas in those states.Florida. The primary customers of the Sabal Trail pipeline, Duke Energy Florida and Florida Power & Light Company (FP&L), have each contracted to buy pipeline capacity for 25-year initial terms. On February 3, 2016, the FERC issued an order granting the request for a CPCN to construct and operate the pipeline. The Sabal Trail pipeline requires additionalhas received regulatory approvals and initiated construction of the pipeline with an expected in-service date in mid-2017. See Notes 12 and 17 for additional information.
Constitution Pipeline
Duke Energy owns a 24 percent ownership interest in Constitution Pipeline Company, LLC (Constitution) through a wholly owned subsidiary of Piedmont. Constitution is scheduleda natural gas pipeline project slated to begin servicetransport natural gas supplies from the Marcellus supply region in 2017. 
NC WARN FERC Complaintnorthern Pennsylvania to major northeastern markets. The pipeline will be constructed and operated by Williams Partners L.P. which has a 41 percent ownership share. The remaining interest is held by Cabot Oil and Gas Corporation and WGL Holdings, Inc.
On DecemberApril 22, 2016, the New York State Department of Environmental Conservation (NYSDEC) denied Constitution’s application for a necessary water quality certification for the New York portion of the Constitution pipeline. Constitution filed legal actions in the U.S. District Court for the Northern District of New York and in the U.S. Court of Appeals for the Second Circuit (U.S. Court of Appeals) challenging the legality and appropriateness of the NYSDEC’s decision. Both courts granted Constitution's motions to expedite the schedules for the legal actions. On November 16, 2014, North Carolina Waste Awareness2016, oral arguments were heard in the U.S. Court of Appeals.
Constitution remains steadfastly committed to pursuing the project and Reduction Network (NC WARN) filed a complaint withintends to pursue all available options to challenge the NYSDEC's decision. In light of the denial of the certification, Constitution revised its target in-service date of the project to be as early as the second half of 2018, assuming that the challenge process is satisfactorily and promptly concluded.
In July 2016, Constitution requested and the FERC against Duke Energy Carolinas and Duke Energy Progress that alleged (i) Duke Energy Carolinas and Duke Energy Progress manipulated the electricity market by constructing costly and unneeded generation facilities leading to unjust and unreasonable rates; (ii) Duke Energy Carolinas and Duke Energy Progress failed to comply with Order 1000 by not effectively connecting their transmission systems with neighboring utilities which also have excess capacity; (iii) the plans of Duke Energy Carolinas and Duke Energy Progress for unrealistic future growth lead to unnecessary and expensive generating plants; (iv) the FERC should investigate the practices of Duke Energy Carolinas and Duke Energy Progress and the potential benefits of having them enter into a regional transmission organization; and (v) the FERC should force Duke Energy Carolinas and Duke Energy Progress to purchase power from other utilities rather than construct wasteful and redundant power plants. NC WARN also filed a copyapproved an extension of the complaint withconstruction period and in-service deadline of the PSCSC on January 6, 2015. In April 2015, the FERC and the PSCSC issued separate orders dismissing the NC WARN petition. On May 14, 2015, NC WARN filed with FERC a motion for reconsideration whichproject to December 2018. Also in July, the FERC denied the New York Attorney General's (NYAG) complaint and request for a stay of the certificate order authorizing the project on the grounds that Constitution had improperly cut trees along the proposed route. The FERC found the complaint procedurally deficient and that there was no justification for a stay; it did find the filing constituted a valid request for investigation and thus referred the matter to FERC staff for further examination as may be appropriate. On November 19, 2015. This matter22, 2016, the FERC denied the NYAG's request for reconsideration of this order.

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Combined Notes To Consolidated Financial Statements – (Continued)

Since April 2016, with the actions of the NYSDEC, Constitution stopped construction and discontinued capitalization of future development costs until the project's uncertainty is now closed.resolved. As a result, Duke Energy evaluated the investment in the Constitution project for OTTIs. At this time, no OTTI has been determined and therefore no impairment charge to reduce the carrying value of the investment has been recorded. However, to the extent that the legal and regulatory proceedings have unfavorable outcomes, or if Constitution concludes that the project is not viable or does not go forward as legal and regulatory actions progress, the conclusions with respect to OTTIs could change and may require that an impairment charge of up to the recorded investment in the project, net of any cash and working capital returned, be recorded. Duke Energy will continue to monitor and update the OTTI analysis as required. Different assumptions could affect the timing and amount of any charge recorded in a period.
Pending the outcome of the matters described above, and when construction proceeds, Duke Energy remains committed to fund an amount in proportion to its ownership interest for the development and construction of the new pipeline. Duke Energy's total anticipated contributions are approximately $229 million. See Notes 12 and 17 for additional information.
Progress Energy Merger FERC Mitigation
In June 2012, the FERC approved the merger with Progress Energy, including Duke Energy and Progress Energy’s revised market power mitigation plan, the Joint Dispatch Agreement (JDA) and the joint Open Access Transmission Tariff. Several intervenors filed requests for rehearing challenging various aspects of the FERC approval. On October 29, 2014, FERC denied all of the requests for rehearing.
The revised market power mitigation plan provided for the acceleration of one transmission project and the completion of seven other transmission projects (Long-Term FERC Mitigation) and interim firm power sale agreements during the completion of the transmission projects (Interim FERC Mitigation). The Long-Term FERC Mitigation was expected to increase power imported into the Duke Energy Carolinas and Duke Energy Progress service areas and enhance competitive power supply options in the service areas. All of these projects were completed in or before 2014. On May 30, 2014, the Independent Monitor filed with FERC a final report stating that the Long-Term FERC Mitigation is complete. Therefore, Duke Energy Carolinas' and Duke Energy Progress' obligations associated with the Interim FERC Mitigation have terminated. In the second quarter of 2014, Duke Energy Progress recorded an $18 million partial reversal of an impairment recorded in the third quarter of 2012. This reversal adjusts the initial disallowance from the Long-Term FERC mitigation and reflects updated information on the construction costs and in-service dates of the transmission projects.

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Following the closing of the merger, outside counsel reviewed Duke Energy’s mitigation plan and discovered a technical error in the calculations. On December 6, 2013, Duke Energy submitted a filing to the FERC disclosing the error and arguing that no additional mitigation is necessary. The city of New Bern filed a protest and requested that FERC order additional mitigation. On October 29, 2014, the FERC ordered that the amount of the stub mitigation be increased from 25 MW to 129 MW. The stub mitigation is Duke Energy’s commitment to set aside for third parties a certain quantity of firm transmission capacity from Duke Energy Carolinas to Duke Energy Progress during summer off-peak hours. The FERC also ordered that Duke Energy operate certain phase shifters to create additional import capability and that such operation be monitored by an independent monitor. Duke Energy does not expect theThe costs to comply with this order to beare not material. The FERC also referred Duke Energy’s failure to expressly designate the phase shifter reactivation as a mitigation project in Duke Energy’sthe original mitigation plan filing in March 2012 to the FERC Office of Enforcement for further inquiry. In response, and since December 2014, the FERC Office of Enforcement has been conducting a nonpublic investigation of Duke Energy's market power analyses included in the Progress merger filings submitted to FERC. Duke Energy cannot predict the outcome of this additional inquiry.investigation.
Potential Coal Plant Retirements
The Subsidiary Registrants periodically file Integrated Resource Plans (IRP) with their state regulatory commissions. The IRPs provide a view of forecasted energy needs over a long term (10 to 20 years), and options being considered to meet those needs. Recent IRPs filed by the Subsidiary Registrants included planning assumptions to potentially retire certain coal-fired generating facilities in Florida and Indiana earlier than their current estimated useful lives. Theselives primarily because facilities do not have the requisite emission control equipment primarily to meet EPA regulations recently approved or proposed.
The table below contains the net carrying value of generating facilities planned for retirement or included in recent IRPs as evaluated for potential retirement due to a lack of requisite environmental control equipment. Dollar amounts in the table below are included in Net property, plant and equipment on the Consolidated Balance Sheets.Sheets as of December 31, 2016 and exclude capitalized asset retirement costs.
 December 31, 2015
   Duke
 Duke
 Duke
 Energy
 Energy
 Energy
 
Florida(b)

 
Indiana(c)

Capacity (in MW)1,821
 873
 948
Remaining net book value (in millions)(a)
$352
 $131
 $221
   Remaining Net
 Capacity
 Book Value
 (in MW)
 (in millions)
Duke Energy Carolinas   
Allen Steam Station Units 1-3(a)
585
 $168
Progress Energy and Duke Energy Florida   
Crystal River Units 1 and 2873
 120
Duke Energy Indiana(b)
   
Gallagher Units 2 and 4(c)
280
 136
Total Duke Energy1,738
 $424
(a)Remaining net book value amounts presented exclude any capitalized asset retirement costs related to closureDuke Energy Carolinas will retire Allen Steam Station Units 1 through 3 by December 31, 2024, as part of ash basins.the resolution of a lawsuit involving alleged New Source Review violations.
(b)Includes CrystalDuke Energy Indiana retired Wabash River Units 1 and 2. Progress Energy amounts are equal to Duke Energy Florida amounts. 2 through 6 in 2016.
(c)Includes Wabash River Units 2 through 6 and Gallagher Units 2 and 4. Wabash River Unit 6 is being evaluated for potential conversion to natural gas. Duke Energy Indiana committed to retire or convert the Wabash River Units 2 through 6 by June 2018 in conjunction with a settlement agreement associated with the Edwardsport air permit. Duke Energy Indiana committed to either retire or stop burning coal at Gallagher Units 2 and 4 by December 31, 2022, as part of the proposed settlement of Edwardsport IGCC matters.

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Combined Notes To Consolidated Financial Statements – (Continued)

On October 23, 2015, the EPA published in the Federal Register the final Clean Power Plan (CPP) rule for regulating carbon dioxide (CO2) emissions from existing fossil fuel-fired electric generating units (EGUs). The CPP establishes CO2emission rates and mass cap goals that apply to existing fossil fuel-fired generation. UnderEGUs. Petitions challenging the CPP, states are required to develop and submit a final compliance plan, or an initial plan with an extension request, to the EPA by September 6, 2016, or no later than September 6, 2018, with an approved extension. These state plans are subject to EPA approval, with a federal plan applied to states that fail to submit a plan to the EPA or if a state plan is not approved. Legal challenges to the CPP have been filed by stakeholdersseveral groups and motions to stay the requirements of the rule pending the outcome of the litigation were granted byon February 9, 2016, the U.S. Supreme Court in February 2016. Final resolutionissued a stay of thesethe final CPP rule, halting implementation until legal challenges could take several years.are resolved. States in which the Duke Energy Registrants operate have suspended work on CPP compliance plans as a result of the stay. The court is expected to decide the case in early 2017. Compliance with CPP could cause the industry to replace coalcoal-fired generation with natural gas and renewables, especially in states that have significant CO2reduction targets under the rule. Costs to operate coal-fired generation plants continue to grow due to increasing environmental compliance requirements, including ash management costs unrelated to CPP, and thiswhich may result in the retirement of coal-fired generation plants earlier than the current end of useful lives. Duke Energy continues to evaluate the need to retire generating facilities and plans to seek regulatory recovery, where appropriate, for amounts that have not been recovered upon asset retirements. However, recovery is subject to future regulatory approval, including the recovery of carrying costs on remaining book values, and therefore cannot be assured.
Refer to the "Western Carolinas Modernization Plan" discussion above for details of Duke Energy Progress' planned retirements.
5. COMMITMENTS AND CONTINGENCIES
INSURANCE
General Insurance
The Duke Energy Registrants have insurance and reinsurance coverage either directly or through indemnification from Duke Energy’s captive insurance company, Bison, and its affiliates, consistent with companies engaged in similar commercial operations with similar type properties. The Duke Energy Registrants’ coverage includes (i) commercial general liability coverage for liabilities arising to third parties for bodily injury and property damage; (ii) workers’ compensation; (iii) automobile liability coverage; and (iv) property coverage for all real and personal property damage. Real and personal property damage coverage excludes electric transmission and distribution lines, but includes damages arising from boiler and machinery breakdowns, earthquakes, flood damage and extra expense, but not outage or replacement power coverage. All coverage is subject to certain deductibles or retentions, sublimits, exclusions, terms and conditions common for companies with similar types of operations.
The Duke Energy Registrants self-insure their electric transmission and distribution lines against loss due to storm damage and other natural disasters. As discussed further in Note 4, Duke Energy Florida maintains a storm damage reserve and has a regulatory mechanism to recover the cost of named storms on an expedited basis.
The cost of the Duke Energy Registrants’ coverage can fluctuate from year to year reflecting claims history and conditions of the insurance and reinsurance markets.

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Combined Notes To Consolidated Financial Statements – (Continued)

In the event of a loss, terms and amounts of insurance and reinsurance available might not be adequate to cover claims and other expenses incurred. Uninsured losses and other expenses, to the extent not recovered by other sources, could have a material effect on the Duke Energy Registrants’ results of operations, cash flows or financial position. Each company is responsible to the extent losses may be excluded or exceed limits of the coverage available.
Nuclear Insurance
Duke Energy Carolinas owns and operates the McGuire Nuclear Station (McGuire) and the Oconee Nuclear Station (Oconee) and operates and has a partial ownership interest in the Catawba Nuclear Station (Catawba). McGuire and Catawba each have two reactors. Oconee has three reactors. The other joint owners of Catawba reimburse Duke Energy Carolinas for certain expenses associated with nuclear insurance per the Catawba joint owner agreements.
Duke Energy Progress owns and operates the Robinson Nuclear Plant (Robinson), Brunswick and Harris. Robinson and Harris each have one reactor. Brunswick has two reactors.
Duke Energy Florida manages and has a partial ownership interest inowns Crystal River Unit 3, which has been retired. The other joint owner of Crystal River Unit 3 reimburses Duke Energy Florida for certain expenses associated with nuclear insurance per the Crystal River Unit 3 joint owner agreement.
In the event of a loss, terms and amounts of insurance available might not be adequate to cover property damage and other expenses incurred. Uninsured losses and other expenses, to the extent not recovered by other sources, could have a material effect on Duke Energy Carolinas’, Duke Energy Progress’ and Duke Energy Florida’s results of operations, cash flows or financial position. Each company is responsible to the extent losses may be excluded or exceed limits of the coverage available.
Nuclear Liability Coverage
The Price-Anderson Act requires owners of nuclear reactors to provide for public nuclear liability protection per nuclear incident up to a maximum total financial protection liability. The maximum total financial protection liability, which is currently $13.5approximately $13.4 billion, is subject to change every five years for inflation and for the number of licensed reactors. Total nuclear liability coverage consists of a combination of private primary nuclear liability insurance coverage and a mandatory industry risk-sharing program to provide for excess nuclear liability coverage above the maximum reasonably available private primary coverage. The United States Congress could impose revenue-raising measures on the nuclear industry to pay claims.
Primary Liability Insurance
Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida have purchased the maximum reasonably available private primary nuclear liability insurance as required by law, which currently iswas $375 million per station. For incidents after January 1, 2017, this primary nuclear liability insurance limit increased to $450 million per station.

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Combined Notes To Consolidated Financial Statements – (Continued)

Excess Liability Program
This program provides $13.1$13 billion of coverage per incident through the Price-Anderson Act’s mandatory industrywide excess secondary financial protection program of risk pooling. This amount is the product of potential cumulative retrospective premium assessments of $127 million times the current 103102 licensed commercial nuclear reactors in the U.S. Under this program, licensees could be assessed retrospective premiums to compensate for public nuclear liability damages in the event of a nuclear incident at any licensed facility in the U.S. Retrospective premiums may be assessed at a rate not to exceed $19 million per year per licensed reactor for each incident. The assessment may be subject to state premium taxes.
Nuclear Property and Accidental Outage Coverage
Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida are members of Nuclear Electric Insurance Limited (NEIL), an industry mutual insurance company, which provides "all risk" property damage, decontamination and premature decommissioning insurance for each station for losses resulting from damage to its nuclear plants, either due to accidents or acts of terrorism. Additionally, NEIL provides some replacement power cost insurance for each station for losses in the event of a major accidental outage at an insured nuclear station. NEIL requires its members to maintain an investment grade credit rating or to ensure collectability of their annual retrospective premium obligation by providing a financial guarantee, letter of credit, deposit premium or other means of assurance. The companies are required each year to report to the NRC the current levels and sources of insurance that demonstrate it possesses sufficient financial resources to stabilize and decontaminate its reactors and reactor station sites in the event of an accident.
Pursuant to regulations of the NRC, each company’s property damage insurance policies provide that all proceeds from such insurance be applied, first, to place the plant in a safe and stable condition after a qualifying accident and second, to decontaminate the plant before any proceeds can be used for decommissioning, plant repair or restoration.
Losses resulting from acts of terrorism are covered as common occurrences, such that if terrorist acts occur against one or more commercial nuclear power plants insured by NEIL within a 12-month period, they would be treated as one event and the owners of the plants where the act occurred would share one full limit of liability. The full limit of liability is currently $3.2 billion. NEIL sublimits the total aggregate for all of their policies for non-nuclear terrorist events to approximately $1.83 billion.

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Combined Notes To Consolidated Financial Statements – (Continued)

Each nuclear facility has accident property damage, decontamination and premature decommissioning liability insurance from NEIL with limits of $1.5 billion, except for Crystal River Unit 3. Crystal River Unit 3’s limit is $1 billion$50 million and is on an actual cash value basis. NEIL coverage for Crystal River Unit 3 does not include property damage to or resulting from the containment structure although the coverage does apply to decontamination and debris removal, if required following an accident, to ensure public health and safety or if property damage results from a terrorism event. All nuclear facilities except for Catawba and Crystal River Unit 3 also share an additional $1.25 billion nuclear accident insurance limit above their dedicated underlying limit. This shared additional excess limit is not subject to reinstatement in the event of a loss. Catawba has a dedicated $1.25 billion of additional nuclear accident insurance limit above its dedicated underlying limit. Catawba and Oconee also have an additional $750 million of non-nuclear accident property damage limit. All coverages are subject to sublimits and significant deductibles.
NEIL’s Accidental Outage policy provides some replacement power cost insurance for losses in the event of a major accident property damage outage of a nuclear unit. Coverage is provided on a weekly limit basis after a significant waiting period deductible and at 100 percent of the available weekly limits for 52 weeks and 80 percent of the available weekly limits for the next 110 weeks. Coverage is provided until these available weekly periods are met where the accidental outage policy limit will not exceed $490 million for McGuire, Catawba, Oconee, Brunswick and Harris, $464 million for Oconee and $457$404 million for Robinson. NEIL sublimits the accidental outage recovery to the first 104 weeks of coverage not to exceed $328 million from non-nuclear accidental property damage. Coverage amounts decrease in the event more than one unit at a station is out of service due to a common accident. All coverages are subject to sublimits and significant deductibles.
Potential Retroactive Premium Assessments
In the event of NEIL losses, NEIL’s board of directors may assess member companies retroactive premiums of amounts up to 10 times their annual premiums for up to six years after a loss. NEIL has never exercised this assessment. The maximum aggregate annual retrospective premium obligations for Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida are $159$164 million, $108$104 million and $7$1 million, respectively. TheDuke Energy Carolinas' maximum assessment amounts includeamount includes 100 percent of Duke Energy Carolinas’ and Duke Energy Florida’s potential obligations to NEIL for their share of jointly owned reactors. Duke Energy Carolinas would seek reimbursement from the joint owners for their portion of these assessment amounts.
ENVIRONMENTAL
The Duke Energy is subject to international, federal, state and local regulations regarding air and water quality, hazardous and solid waste disposal and other environmental matters. The Subsidiary Registrants are subject to federal, state and local regulations regarding air and water quality, hazardous and solid waste disposal and other environmental matters. These regulations can be changed from time to time, imposing new obligations on the Duke Energy Registrants.
The following environmental matters impact all of the Duke Energy Registrants.
Remediation Activities
In addition to the Asset Retirement ObligationsARO recorded as a result of various environmental regulations, discussed in Note 9, the Duke Energy Registrants are responsible for environmental remediation at various sites. These include certain properties that are part of ongoing operations and sites formerly owned or used by Duke Energy entities. These sites are in various stages of investigation, remediation and monitoring. Managed in conjunction with relevant federal, state and local agencies, remediation activities vary based upon site conditions and location, remediation requirements, complexity and sharing of responsibility. If remediation activities involve joint and several liability provisions, strict liability, or cost recovery or contribution actions, the Duke Energy Registrants could potentially be held responsible for environmental impacts caused by other potentially responsible parties and may also benefit from insurance policies or contractual indemnities that cover some or all cleanup costs. Liabilities are recorded when losses become probable and are reasonably estimable. The total costs that may be incurred cannot be estimated because the extent of environmental impact, allocation among potentially responsible parties, remediation alternatives and/or regulatory decisions have not yet been determined.determined at all sites. Additional costs associated with remediation activities are likely to be incurred in the future and could be significant. Costs are typically expensed as Operation, maintenance and other in the Consolidated Statements of Operations unless regulatory recovery of the costs is deemed probable.

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Combined Notes To Consolidated Financial Statements – (Continued)

The following tables contain information regarding reserves for probable and estimable costs related to the various environmental sites. These reserves are recorded in Other within Deferred Credits and Other Liabilities on the Consolidated Balance Sheets.
  Duke
   Duke
 Duke
 Duke
 Duke
  Duke
   Duke
 Duke
 Duke
 Duke
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Balance at December 31, 2012$75
 $12
 $33
 $14
 $19
 $15
 $8
Provisions/adjustments26
 
 4
 (1) 5
 20
 1
Cash reductions(22) (1) (10) (5) (5) (8) (2)
Balance at December 31, 201379
 11
 27
 8
 19
 27
 7
$74
 $11
 $27
 $8
 $19
 $27
 $7
Provisions/adjustments32
 (1) 1
 4
 (3) 28
 4
32
 (1) 1
 4
 (3) 28
 4
Cash reductions(14) 
 (11) (7) (4) (1) (1)(14) 
 (11) (7) (4) (1) (1)
Balance at December 31, 201497
 10
 17
 5
 12
 54
 10
92
 10
 17
 5
 12
 54
 10
Provisions/adjustments9
 1
 4
 
 4
 1
 5
11
 1
 4
 
 4
 1
 5
Cash reductions(9) (1) (4) (2) (2) (1) (3)(9) (1) (4) (2) (2) (1) (3)
Balance at December 31, 2015$97
 $10
 $17
 $3
 $14
 $54
 $12
94
 10
 17
 3
 14
 54
 12
Provisions/adjustments19
 4
 7
 2
 4
 7
 1
Cash reductions(15) (4) (6) (2) (4) (2) (3)
Balance at December 31, 2016$98
 $10
 $18
 $3
 $14
 $59
 $10

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Combined Notes To Consolidated Financial Statements – (Continued)

Additional losses in excess of recorded reserves that could be incurred for the stages of investigation, remediation and monitoring for environmental sites that have been evaluated at this time are not material except as presented in the table below.
(in millions)  
Duke Energy$74
$69
Duke Energy Carolinas22
22
Duke Energy Ohio42
36
Duke Energy Indiana7
7
North Carolina and South Carolina Ash Basins
OnIn February 2, 2014, a break in a stormwater pipe beneath an ash basin at Duke Energy Carolinas’ retired Dan River Steam Station caused a release of ash basin water and ash into the Dan River. On February 8, 2014, a permanent plug was installed in the stormwater pipe, stopping the release of materials into the river. Duke Energy Carolinas estimates 30,000 to 39,000 tons of ash and 24 million to 27 million gallons of basin water were released into the river. In July 2014, Duke Energy completed remediation work identified by the EPA and continues to cooperate with the EPA's civil enforcement process. During 2014, Duke Energy Carolinas incurred repairs and remediation expenses related to the release of approximately $24 million. No additional expenses were recorded in 2015. Duke Energy Carolinas will not seek recovery of these costs from customers. OtherFuture costs related to the Dan River release, including pending or future state or federal civil enforcement proceedings, future regulatory directives, natural resources damages, additional pending litigation, future claims or litigation and long-term environmental impact costs, cannot be reasonably estimated at this time.
The North Carolina Department of Environmental Quality (NCDEQ), formerly the North Carolina Department of Environment and Natural Resources, has historically assessed Duke Energy Carolinas and Duke Energy Progress with Notice of Violations (NOV) for violations that were most often resolved through satisfactory corrective actions and minor, if any, fines or penalties. Subsequent to the Dan River matter discussed above,ash release, Duke Energy CarolinaCarolinas and Duke Energy Progress have been served with a higher level of NOVs, including assessed penalties for violations at L.V. Sutton Combined Cycle Plant (Sutton) and Dan River Steam Station. In August 2014, NCDEQ issued an NOV for alleged groundwater violations at Duke Energy Progress' L.V. Sutton Plant. On March 10, 2015, NCDEQ issued a civil penalty of approximately $25 million to Duke Energy Progress for environmental damages related to groundwater contamination at the L.V. Sutton Plant. See "Litigation" section below for information related to the resolution of this civil penalty. On February 8, 2016, NCDEQ assessed a penalty of approximately $6.8 million, including enforcement costs, against Duke Energy Carolinas related to storm-water pipes and associated discharges at the Dan River Steam Station. Duke Energy Carolinas recorded a charge to Operation, maintenance and other on the Consolidated Statements of Operations and Comprehensive Income in December 2015. Duke Energy Carolinas is reviewing the NCDEQ action to determine next steps and cannot predict the outcome of this matter. These fines and penalties are unprecedented and were not consistent with historic enforcement practices of NCDEQ. Based on historic practices the expected liability of any existing notice of violations would not be material. Duke Energy Carolinas and Duke Energy Progress cannot predict whether the NCDEQ will assess future penalties related to existing unresolved NOVs and if such penalties would be material.
See the "Litigation""NCDEQ Notices of Violation" section below for additional information on litigation, investigations and enforcement actions related to ash basins, including the Memorandum of Plea Agreement (Plea Agreements) in connection to the North Carolina Ash Basin Grand Jury Investigation and NCDEQ matters.discussion.
LitigationLITIGATION
Duke Energy
Duke Energy no longer has exposure to litigation matters related to the International Energy Disposal Group as a result of the divestiture of the business in December 2016. See Note 2 for additional information related to the sale of International Energy.
Ash Basin Shareholder Derivative Litigation
Five shareholder derivative lawsuits were filed in Delaware Chancery Court relating to the release at Dan River and to the management of Duke Energy’s ash basins. On October 31, 2014, the five lawsuits were consolidated in a single proceeding titled "InIn Re Duke Energy Corporation Coal Ash Derivative Litigation."Litigation. On December 2, 2014, plaintiffs filed a Corrected Verified Consolidated Shareholder Derivative Complaint (Consolidated Complaint). The Consolidated Complaint names as defendants several current and former Duke Energy officers and directors (collectively, the “Duke Energy Defendants”). Duke Energy is named as a nominal defendant.

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Combined Notes To Consolidated Financial Statements – (Continued)

The Consolidated Complaint alleges the Duke Energy Defendants breached their fiduciary duties by failing to adequately oversee Duke Energy’s ash basins and that these breaches of fiduciary duty may have contributed to the incident at Dan River and continued thereafter. The lawsuit also asserts claims against the Duke Energy Defendants for corporate waste (relating to the money Duke Energy has spent and will spend as a result of the fines, penalties and coal ash removal) and unjust enrichment (relating to the compensation and director remuneration that was received despite these alleged breaches of fiduciary duty). The lawsuit seeks both injunctive relief against Duke Energy and restitution from the Duke Energy Defendants. On January 21, 2015, the Duke Energy Defendants filed a Motion to Stay and an alternative Motion to Dismiss. On August 31, 2015, the court issued an order staying the case through November 15, 2015. A rulingwhich was lifted on defendants'March 24, 2016. On April 22, 2016, plaintiffs filed an Amended Verified Consolidated Shareholder Derivative Complaint (Amended Complaint) making the same allegations as in the Consolidated Complaint. The Duke Energy Defendants filed a motion to further extenddismiss the stay remains pending.Amended Complaint on June 21, 2016. On December 14, 2016, the Delaware Chancery Court entered an order dismissing the Amended Complaint. Plaintiffs filed an appeal to the Delaware Supreme Court on January 9, 2017. Opening briefs were due by February 24, 2017, and a date for oral argument has not been set.

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Combined Notes To Consolidated Financial Statements – (Continued)

On March 5, 2015, shareholder Judy Mesirov filed a shareholder derivative complaint (Mesirov Complaint) in North Carolina state court. The lawsuit, styled Mesirov v. Good, iswas similar to the consolidated derivative action pending in Delaware Chancery Court and was filed against the same current directors and former directors and officers as the Delaware litigation. Duke Energy Corporation, Duke Energy Progress and Duke Energy Carolinas arewere named as nominal defendants. The Mesirov Complaint allegesalleged that the Duke Energy Board of Directors was aware of Clean Water Act (CWA) compliance issues and failures to maintain structures in ash basins, but that the Board of Directors did not require Duke Energy Carolinas and Duke Energy Progress to take action to remedy deficiencies. The Mesirov Complaint further allegesalleged that the Board of Directors sanctioned activities to avoid compliance with the law by allowing improper influence of the NCDEQ to minimize regulation and by opposing previously anticipated citizen suit litigation. The Mesirov Complaint seekssought corporate governance reforms and damages relating to costs associated with the Dan River release, remediation of ash basins that are out of compliance with the CWA and defending and payment of fines, penalties and settlements relating to criminal and civil investigations and lawsuits. On December 7, 2015,July 5, 2016, the Duke Energy Defendantsplaintiff filed a Motion to Stay the proceedings. A hearing was held on February 17, 2016, and a ruling onNotice of Voluntary Dismissal Without Prejudice, closing this motion is pending.matter.
In addition to the above derivative complaints, in 2014, Duke Energy also received two shareholder litigation demand letters. The letters allegealleged that the members of the Board of Directors and certain officers breached their fiduciary duties by allowing the company to illegally dispose of and store coal ash pollutants. One of the letters also allegesalleged a breach of fiduciary duty in the decision-making relating to the leadership changes following the close of the Progress Energy merger in July 2012.
By letter dated September 4, 2015, attorneys for the shareholders were informed that, on the recommendation of the Demand Review Committee formed to consider such matters, the Board of Directors concluded not to pursue potential claims against individuals. One of the shareholders, Mitchell Pinsly, sent a formal demand for records and Duke Energy is respondinghas responded to this request.
On October 30, 2015, shareholder Saul Bresalier filed a shareholder derivative complaint (Bresalier Complaint) in the U. S.U.S. District Court for the District of Delaware. The lawsuit alleges that several current and former Duke Energy officers and directors (Bresalier Defendants) breached their fiduciary duties in connection with coal ash environmental issues, the post-merger change in Chief Executive Officer (CEO) and oversight of political contributions. Duke Energy is named as a nominal defendant. The Bresalier Complaint contends that the Demand Review Committee failed to appropriately consider the shareholder’s earlier demand for litigation and improperly decided not to pursue claims against the Bresalier Defendants. The Bresalier Defendants filed a Motion to Dismiss the Bresalier litigation on January 15, 2016. In lieu of a response to the Motion to Dismiss, the plaintiff filed a Motion to Convert the Bresalier Defendants' Motion to Dismiss into a Motion for Summary Judgment and also for limited discovery. Following a hearing on June 15, 2016, the court denied the plaintiff's Motion to Convert and is requiring the parties to complete briefing on the Bresalier Defendants' Motion to Dismiss. On July 29, 2016, the Bresalier Defendants filed an Amended Motion to Dismiss. Oral argument on the Amended Motion to Dismiss was heard on December 20, 2016. As discussed below, an agreement-in-principle has been reached to settle the merger related claims in the Bresalier Complaint.
It is not possible to predict whether Duke Energy will incur any liability or to estimate the damages, if any, it might incur in connection with these matters.
Progress Energy Merger Shareholder Litigation
Duke Energy, the 11 members of the Board of Directors who were also members of the pre-merger Board of Directors (Legacy Duke Energy Directors) and certain Duke Energy officers arewere defendants in a purported securities class action lawsuit (Nieman v. Duke Energy Corporation, et al). This lawsuit consolidatesconsolidated three lawsuits originally filed in July 2012 and is pending in the United States District Court for the Western District of North Carolina.2012. The plaintiffs allegealleged federal Securities Act of 1933 and Securities Exchange Act of 1934 (Exchange Act) claims based on allegations of materially false and misleading representations and omissions in the Registration Statement filed on July 7, 2011, and purportedly incorporated into other documents, all in connection with the post-merger change in Chief Executive Officer (CEO).
CEO. On August 15, 2014, the parties reached an agreement in principle to settle the litigation. On March 10, 2015, the parties filed a Stipulation of Settlement and a Motion for Preliminary Approval of the Settlement. The court issued an order for preliminary approval of the settlement on March 25, 2015. Under the terms of the agreement, Duke Energy agreed to pay $146 million to settle the claim. On April 22, 2015, Duke Energy made a payment of $25 million into the settlement escrow account. The remainder of $121 million was paid by insurers into the settlement escrow account. Notice has been sent to members of the class and a final approval hearing was held on August 12, 2015. The final order approving the settlement was issued on November 2, 2015, thus closing the matter.
On May 31, 2013, the Delaware Chancery Court consolidated four shareholder derivative lawsuits filed in 2012. The Court also appointed a lead plaintiff and counsel for plaintiffs and designated the case as In Re Duke Energy Corporation Derivative Litigation(Merger Chancery Litigation). The lawsuit names as defendants the Legacy Duke Energy Directors. Duke Energy is named as a nominal defendant. The case alleges claims for breach of fiduciary duties of loyalty and care in connection with the post-merger change in CEO. On December 10, 2015, the Duke Energy defendants filed a Motion to Dismiss the litigation.
Two shareholder Derivative Complaints, filed in 2012 in federal district court in Delaware, were consolidated as Tansey v. Rogers, et al. The case alleges claims against the Legacy Duke Energy Directors for breach of fiduciary duty and waste of corporate assets, as well as claims under Section 14(a) and 20(a) of the Exchange Act. Duke Energy is named as a nominal defendant. On December 21, 2015, Plaintiff filed a Consolidated Amended Complaint asserting the same claims contained in the original complaints.

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Combined Notes To Consolidated Financial Statements – (Continued)

The Legacy Duke Energy filedDirectors have reached an agreement-in-principle to settle the Merger Chancery Litigation, conditioned on dismissal as well, of the Tansey v. Rogers, et al case and the merger related claims in the Bresalier Complaint discussed above, for a Motiontotal of $27 million. The entire settlement amount is to Dismiss on February 19, 2016.
Itbe funded by insurance. The settlement amount, less court-approved attorney fees, will be payable to Duke Energy. The settlement is not possiblesubject to predict whether Duke Energy will incur any liability or to estimate the damages, if any, it might incur in connection with the remaining litigation.execution of definitive settlement documents and court approval.
Price Reporting Cases
Duke Energy Trading and Marketing, LLC (DETM), a non-operating Duke Energy affiliate, iswas a defendant, along with numerous other energy companies, in four class-action lawsuits and a fifth single-plaintiff lawsuit pending in a consolidated federal court proceeding in Nevada. Each of these lawsuits containscontained similar claims that defendants allegedly manipulated natural gas markets by various means, including providing false information to natural gas trade publications and entering into unlawful arrangements and agreements in violation of the antitrust laws of the respective states. Plaintiffs seeksought damages in unspecified amounts.

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On July 18, 2011, the judge granted a defendant’s motion for summary judgment in two of five cases. The U.S. Court of Appeals for the Ninth Circuit subsequently reversed the lower court’s decision. On April 21, 2015, the Supreme Court affirmed the U.S. Court of Appeals decision. The case has been reassigned to the same consolidated federal court proceeding in Nevada for further proceedings. In February 2016, DETM reached agreements in principle to settle all of the pending lawsuits. Settlement of the single-plaintiff settlement was finalized and paid in March 2016. The proposed settlement of the class-action settlementslawsuits was submitted to the Court and preliminarily approved on January 26, 2017. The Court will be subjectconsider final approval of the class settlement following notice to court approval, which is pending.the class members. The settlement amount isamounts are not material to Duke Energy.
Brazil Expansion Lawsuit
On August 9, 2011, the State of São Paulo sued Duke Energy International Geracao Paranapenema S.A. (DEIGP) in Brazilian state court. The lawsuit claims DEIGP is under a continuing obligation to expand installed generation capacity in the State of São Paulo by 15 percent pursuant to a stock purchase agreement under which DEIGP purchased generation assets from the state. On August 10, 2011, a judge granted an ex parte injunction ordering DEIGP to present a detailed expansion plan in satisfaction of the 15 percent obligation. DEIGP has previously taken a position that the expansion obligation is no longer viable given changes that have occurred in the electric energy sector since privatization. DEIGP submitted its proposed expansion plan on November 11, 2011, but reserved objections regarding enforceability. In January 2013, DEIGP filed appeals in the federal courts, which are still pending, regarding various procedural issues. A decision on the merits in the first instance court is also pending. It is not possible to predict whether Duke Energy will incur any liability or to estimate the damages, if any, it might incur in connection with this matter.
Brazil Generation
Record drought conditions in Brazil continue to impact Duke Energy International, Geracao Paranapanema S.A. (DEIGP). A number of electric generators have filed lawsuits seeking relief in the Brazilian courts to mitigate hydrological exposure and diminishing dispatch levels. Some courts have granted injunction orders to limit the financial exposure of certain generators. The implication of these orders is that other electricity market participants not covered by the injunctions may be required to compensate for the financial impact of the liability limitations. The Independent Power Producer Association (APINE) filed one such lawsuit on behalf of DEIGP and other hydroelectric generators against the Brazilian electric regulatory agency. On July 2, 2015, an injunction was granted in favor of APINE limiting the financial exposure of DEIGP and the other plaintiff generators, until the merits of the lawsuit are determined. The APINE decision is subject to appeal and the outcome of these lawsuits is uncertain. It is not possible to predict the impact to Duke Energy from the outcome of these matters.
Duke Energy Carolinas and Duke Energy Progress
NCDEQ Notice of Violation (NOV)
In August 2014, NCDEQ issued an NOV for alleged groundwater violations at Duke Energy Progress' L.V. Sutton Plant. On March 10, 2015, NCDEQ issued a civil penalty of approximately $25 million to Duke Energy Progress for environmental damages related to thealleged groundwater contamination at the L.V. Sutton Plant. On April 9, 2015, Duke Energy Progress filed a Petition for Contested Case hearing in the Office of Administrative Hearings. In February 2015, NCDEQ issued an NOV for alleged groundwater violations at Duke Energy Progress' Asheville Plant. Duke Energy Progress responded to NCDEQ regarding this NOV.
On September 29, 2015, Duke Energy Progress and Duke Energy Carolinas entered into a settlement agreement with NCDEQ resolving all former, current and future groundwater penalties at all Duke Energy Carolinas and Duke Energy Progress coal facilities in North Carolina. Under the agreement, Duke Energy Progress paid approximately $6 million and Duke Energy Carolinas paid approximately $1 million. In addition to these payments, Duke Energy Progress and Duke Energy Carolinas will accelerate remediation actions at the Sutton, Asheville, Belews Creek and H.F. Lee plants. The court entered a consent order resolving the contested case relating to the Sutton Plant and NCDEQ rescinded the NOVs relating to alleged groundwater violations at both the Sutton and Asheville plants.
On October 13, 2015, the Southern Environmental Law Center (SELC), representing multiple conservation groups, filed a lawsuit in North Carolina Superior Court seeking judicial review of the order approving the settlement agreement with NCDEQ. The conservation groups contend that the Administrative Law JudgeALJ exceeded his statutory authority in approving a settlement that provided for past, present and future resolution of groundwater issues at facilities which were not at issue in the penalty appeal. On December 18, 2015, Duke Energy Carolinas and Duke Energy Progress filed a Motion to Dismiss the complaint. AtOn February 12, 2016, the ALJ entered a hearing heldnew order clarifying that the dismissal of the contested case only applied to the specific issues before the ALJ in the Petition for Contested Case. On March 10, 2016, the court dismissed the SELC lawsuit based on the ALJ's entry of the new order.
On February 12,8, 2016, the NCDEQ assessed a penalty of approximately $6.8 million, including enforcement costs, against Duke Energy Carolinas related to stormwater pipes and associated discharges at the Dan River Steam Station. Duke Energy Carolinas recorded a charge in December 2015 for this penalty. In March 2016, Duke Energy Carolinas andfiled an appeal of this penalty. On September 23, 2016, Duke Energy Progress stated thatCarolinas entered into a proposed revised order would be submittedsettlement agreement with the NCDEQ, without admission of liability, under which Duke Energy Carolinas agreed to a payment of $6 million to resolve allegations underlying the asserted civil penalty related to the Administrative Law Judge to addressDan River coal ash release and a March 4, 2016, NOV alleging unpermitted discharges at the court's and SELC's concerns. It is not possible to predict the outcome of this matter.facility.
NCDEQ State Enforcement Actions
In the first quarter of 2013, SELC sent notices of intent to sue Duke Energy Carolinas and Duke Energy Progress related to alleged groundwater violations and CWA violations from coal ash basins at two of their coal-fired power plants in North Carolina. The NCDEQ filed enforcement actions against Duke Energy Carolinas and Duke Energy Progress alleging violations of water discharge permits and North Carolina groundwater standards. The cases have been consolidated and are being heard before a single judge.
On August 16, 2013, the NCDEQ filed an enforcement action against Duke Energy Carolinas and Duke Energy Progress related to their remaining plants in North Carolina, alleging violations of the CWA and violations of the North Carolina groundwater standards. Both of these cases have been assigned to the judge handling the enforcement actions discussed above. SELC on behalf ofis representing several environmental groups haswho have been permitted to intervene in these cases.
On July 10, 2015, Duke Energy Carolinas and Duke Energy Progress filed two Motions for Partial Summary Judgment in the case on the basis that there is no longer either a genuine controversy or disputed material facts about the relief for seven of the 14 North Carolina plants with coal ash basins. On September 14, 2015, the court granted the Motions for Partial Summary Judgment pending court approval of the terms through an order. On April 4, 2016, the court issued an order granting Duke Energy Progress' Motion for Partial Summary Judgment for cases involving the H.F. Lee, Cape Fear and Weatherspoon plants. On June 1, 2016, the court issued an order granting Duke Energy Carolinas' and Duke Energy Progress' Motion for Partial Summary Judgment for cases involving the Asheville, Dan River, Riverbend and Sutton plants. The litigation is concluded for these seven plants. Litigation continues for the remaining seven plants. In November 2015, NCDEQ submittedresponse to a proposed order. On November 23, 2015,motion for partial summary judgment on the groundwater claims filed by the environmental groups, on October 17, 2016, Duke Energy Carolinas and Duke Energy Progress filed a cross-motion for partial summary judgment on the groundwater claims. On February 13, 2017, the court issued an order denying both the environmental groups' motion for partial summary judgment and SELC filed separate objections to portions of the NCDEQ filing. The parties are drafting a consolidated order to comply with the ruling made by the judge at a hearing held on February 12, 2016.Duke Energy Carolinas and Duke Energy Progress' cross-motion for partial summary judgment.

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Combined Notes To Consolidated Financial Statements – (Continued)

It is not possible to predict any liability or estimate any damages Duke Energy Carolinas or Duke Energy Progress might incur in connection with these matters.
North Carolina Declaratory Judgment Action
On October 10, 2012, the SELC, on behalf of the same environmental groups that are involved in the state enforcement actions discussed above, filed a petition with the North Carolina Environmental Management Commission (EMC) asking for a declaratory ruling seeking to clarify the application of the state’s groundwater protection rules to coal ash basins. The petition sought to change the interpretation of regulations that permitted NCDEQ to assess the extent, cause and significance of any groundwater contamination before ordering action to eliminate the source of contamination, among other issues. Duke Energy Carolinas and Duke Energy Progress were both permitted to intervene in the matter. On December 3, 2012, the EMC affirmed this interpretation of the regulations.
On March 6, 2014, a North Carolina Superior Court judge overturned the ruling of the EMC holding that in the case of groundwater contamination, NCDEQ was required to issue an order to immediately eliminate the source of the contamination before an assessment of the nature, significance and extent of the contamination or the continuing damage to the groundwater was conducted. Duke Energy Carolinas, Duke Energy Progress and the EMC appealed the ruling in April 2014. On May 16, 2014, the North Carolina Court of Appeals denied a petition to stay the case during the appeal. On October 10, 2014, the parties were notified the case has been transferred to the North Carolina Supreme Court (NCSC). Oral argument was held on March 16, 2015. On June 11, 2015, the NCSC issued its opinion in favor of Duke Energy Carolinas, Duke Energy Progress and the EMC and remanded the matter to the state court judge with instructions to dismiss the case. This matter is now closed.
Federal Citizens Suits
There are currently five cases filed in various North Carolina federal courts related to the Riverbend, Sutton, Cape Fear, H.F. Lee and Buck plants.
On June 11, 2013, Catawba Riverkeeper Foundation, Inc. (Catawba Riverkeeper)13, 2016, the Roanoke River Basin Association filed a separate action in the United States Court for the Western District of North Carolina. The lawsuit contends the state enforcement action discussed above does not adequately address issues raised in Catawba Riverkeeper’s notice of intent to sue relating to the Riverbend Steam Station. On April 11, 2014, the Court denied Catawba Riverkeeper’s objections to the Magistrate Judge’s recommendation that plaintiff’s case be dismissed as well as Duke Energy Carolinas’ motion to dismiss. On August 13, 2015, the court issued an order suspending all proceedings until further order from the court.
On September 12, 2013, Cape Fear River Watch, Inc., Sierra Club and Waterkeeper Alliance filed afederal citizen suit in the Federal District Court for the Eastern District of North Carolina. The lawsuit alleges unpermitted discharges to surface water and groundwater violations at the Sutton Plant. On June 9, 2014, the court granted Duke Energy Progress' request to dismiss the groundwater claims but rejected its request to dismiss the surface water claims. In response to a motion filed by the SELC, on August 1, 2014, the court modified the original June 9order to dismiss only the plaintiff's federal law claim based on hydrologic connections at Sutton Lake. The claims related to the alleged state court violations of the permits are back in the case. On August 26, 2015, the court suspended the proceedings until further order from the court.
On September 3, 2014, three citizen suits were filed by various environmental groups: (i) a citizen suit in the United States Court for the Middle District of North Carolina alleging unpermitted discharges to surface water and groundwater violations at the Cape Fear Plant; (ii) in the United States Court for the Eastern District of North Carolina alleging unpermitted dischargesMayo Plant. On August 19, 2016, Duke Energy Progress filed a Motion to surface water and groundwater violations at the H.F. Lee Plant; and (iii) in the United States Court for the Middle District of North Carolina alleging unpermitted discharges to surface water and groundwater violations at the Buck Steam Station. Motions to Stay or Dismiss the proceedings were filed in each of the three cases. The proceedings related to Cape Fearcomplaint and H.F. Lee have been stayed. On October 20, 2015, the court issued an order denying the motions in the Buck proceedings. Duke Energy Carolinas' motion seeking appellate review of the District Court'sa decision was denied on January 29, 2016.
is pending. It is not possible to predict whether Duke Energy Carolinas or Duke Energy Progress will incur any liability or to estimate the damages, if any, they might incur in connection with these matters.this matter.
Five previously filed cases involving the Riverbend, Cape Fear, H.F. Lee, Sutton and Buck plants have been dismissed or settled during 2016.
North Carolina Ash Basin Grand Jury Investigation
As a result of the Dan River ash basin water release discussed above, NCDEQ issued a Notice of ViolationNOV and Recommendation of Assessment of Civil Penalties with respect to this matter on February 28, 2014, which the company responded to on March 13, 2014. Duke Energy and certain Duke Energy employees received subpoenas issued by the United States Attorney for the Eastern District of North Carolina in connection with a criminal investigation related to all 14 of the North Carolina facilities with ash basins and the nature of Duke Energy's contacts with NCDEQ with respect to those facilities. This was a multidistrict investigation that also involves state law enforcement authorities.
On February 20, 2015, Duke Energy Carolinas, Duke Energy Progress and Duke Energy Business Services LLC (DEBS), a wholly owned subsidiary of Duke Energy, each entered into Plea Agreements in connection with the investigation initiated by the United States Department of Justice Environmental Crimes Section and the United States Attorneys for the Eastern District of North Carolina, the Middle District of North Carolina and the Western District of North Carolina (collectively, USDOJ). On May 14, 2015, the United States District Court for the Eastern District of North Carolina approved the Plea Agreements.

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Under the Plea Agreements, DEBS and Duke Energy Progress pleaded guilty to four misdemeanor CWA violations related to violations at Duke Energy Progress’ H.F. Lee Steam Electric Plant, Cape Fear Steam Electric Plant and Asheville Steam Electric Generating Plant. Duke Energy Carolinas and DEBS pleaded guilty to five misdemeanor CWA violations related to violations at Duke Energy Carolinas’ Dan River Steam Station and Riverbend Steam Station. DEBS, Duke Energy Carolinas and Duke Energy Progress also agreed (i) to a five-year probation period, (ii) to pay a total of approximately $68 million in fines and restitution and $34 million for community service and mitigation (the Payments), (iii) to fund and establish environmental compliance plans subject to the oversight of a court-appointed monitor in addition to certain other conditions set out in the Plea Agreements. Duke Energy Carolinas and Duke Energy Progress also agree to each maintain $250 million under their Master Credit Facility as security to meet their obligations under the Plea Agreements. Payments under the Plea Agreements will be borne by shareholders and are not tax deductible. Duke Energy Corporation has agreed to issue a guarantee of all payments and performance due from DEBS, Duke Energy Carolinas and Duke Energy Progress, including but not limited to payments for fines, restitution, community service, mitigation and the funding of, and obligations under, the environmental compliance plans. As a result of the Plea Agreements, Duke Energy Carolinas and Duke Energy Progress recognized charges of $72 million and $30 million, respectively, in Operation, maintenance and other on the Consolidated Statements of Operations and Comprehensive Income during 2014. Payment of the amounts relating to fines and restitution were made between May and July 2015. The Plea Agreements do not cover pending civil claims related to the Dan River coal ash release and operations at other North Carolina coal plants.
On May 14, 2015, Duke Energy reached an Interim Administrative Agreement with the U.S. Environmental Protection Agency Office of Suspension and Debarment that avoids debarment of DEBS, Duke Energy Carolinas or Duke Energy Progress with respect to all active generating facilities. The Interim Administrative Agreement imposes a number of requirements relating to environmental and ethical compliance, subject to the oversight of an independent monitor.
Potential Groundwater Contamination Claims
Beginning in May 2015, a number of residents living in the vicinity of the North Carolina facilities with ash basins received letters from the NCDEQ advising them not to drink water from the private wells on their land tested by the NCDEQ as the samples were found to have certain substances at levels higher than the criteria set by the North Carolina Department of Health and Human Services (DHHS). The criteria, in some cases, are considerably more stringent than federal drinking water standards established to protect human health and welfare. The North Carolina Coal Ash Management Act of 2014, as amended, (Coal Ash Act) requires additional groundwater monitoring and assessments for each of the 14 coal-fired plants in North Carolina, including sampling of private water supply wells. The data gathered through these Comprehensive Site Assessments (CSAs) will be used by NCDEQ to determine whether the water quality of these private water supply wells has been adversely impacted by the ash basins. Duke Energy has submitted CSAs documenting the results of extensive groundwater monitoring around coal ash basins at all 14 of the plants with coal ash basins. Generally, the data gathered through the installation of new monitoring wells and soil and water samples across the state have been consistent with historical data provided to state regulators over many years. The DHHS and NCDEQ sent follow-up letters on October 15, 2015, to residents near coal ash basins who have had their wells tested, stating that private well samplings at a considerable distance from coal ash impoundments,basins, as well as some municipal water supplies, contain similar levels of vanadium and hexavalent chromium which leads investigators to believe these constituents are naturally occurring. In March 2016, DHHS rescinded the advisories.

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Duke Energy Carolinas and Duke Energy Progress have received formal demand letters from residents near Duke Energy Carolinas' and Duke Energy Progress' coal ash basins. The residents claim damages for nuisance and diminution in property value, among other things. The parties held three days of mediation discussions which ended at impasse. On January 6, 2017, Duke Energy Carolinas and Duke Energy Progress received the plaintiffs' notice of their intent to file suits should the matter not settle. The NCDEQ preliminarily approved Duke Energy’s permanent water solution plans on January 13, 2017, and as a result shortly thereafter, Duke Energy issued a press release, providing additional details regarding the homeowner compensation package. This package consists of three components: (i) a $5,000 goodwill payment to each eligible well owner to support the transition to a new water supply, (ii) where a public water supply is available and selected by the eligible well owner, a stipend to cover 25 years of water bills and (iii) the Property Value Protection Plan. The Property Value Protection Plan is a program offered by Duke Energy designed to guarantee eligible plant neighbors the fair market value of their residential property should they decide to sell their property during the time which the plan is offered. Duke Energy Carolinas and Duke Energy Progress recognized charges of $18 million and $4 million, respectively, in Operation, maintenance and other on the Consolidated Statements of Operations and Comprehensive Income in December 2016.
It is not possible to estimate the maximum exposure of loss, if any, that may occur in connection with claims which might be made by these residents.
Duke Energy Carolinas
New Source Review
In 1999-2000, the U.S. Department of Justice (DOJ) on behalf of the EPA filed a number of complaints and notices of violation against multiple utilities, including Duke Energy Carolinas, for alleged violations of the New Source Review (NSR) provisions of the Clean Air Act (CAA). The government alleges the utilities violated the CAA when undertaking certain maintenance and repair projects at certain coal plants without (i) obtaining NSR permits and (ii) installing the best available emission controls for sulfur dioxide, nitrogen oxide and particulate matter. The complaints sought the installation of pollution control technology on generating units that allegedly violated the CAA, and unspecified civil penalties in amounts of up to $37,500 per day for each violation.
In 2000, the government sued Duke Energy Carolinas in the U.S. District Court in Greensboro, North Carolina, claiming NSR violations for 29 projects performed at 25 of Duke Energy Carolinas’ coal-fired units. Duke Energy Carolinas asserted there were no CAA violations because the applicable regulations do not require NSR permitting in cases where the projects undertaken are routine or otherwise do not result in an increase in emissions. In 2011, the parties filed a stipulation agreeing to dismiss with prejudice all but 13 claims at 13 generating units, 11 of which have since been retired. On October 20, 2015, the Court approved and entered a consent decree to resolve this matter. Under the consent decree, Duke Energy Carolinas will retire by the end of 2024, the remaining units at the Allen plant that are part of the litigation as well as a third unit that is not part of the litigation. Prior to closure, Duke Energy Carolinas will comply with new, lower emissions limits at the Allen units named in the litigation. Additionally, Duke Energy Carolinas will spend approximately $4 million on environmental projects and donations and pay a civil penalty of $975 thousand. This matter is now closed.
Asbestos-related Injuries and Damages Claims
Duke Energy Carolinas has experienced numerous claims for indemnification and medical cost reimbursement related to asbestos exposure. These claims relate to damages for bodily injuries alleged to have arisen from exposure to or use of asbestos in connection with construction and maintenance activities conducted on its electric generation plants prior to 1985. As of December 31, 2015,2016, there were 156121 asserted claims for non-malignant cases with the cumulative relief sought of up to $37$32 million and 7058 asserted claims for malignant cases with the cumulative relief sought of up to $11$16 million. Based on Duke Energy Carolinas’ experience, it is expected that the ultimate resolution of most of these claims likely will be less than the amount claimed.

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Combined Notes To Consolidated Financial Statements – (Continued)

Duke Energy Carolinas has recognized asbestos-related reserves of $536$512 million and $575$536 million at December 31, 20152016 and 2014,2015, respectively. These reserves are classified in Other within Deferred Credits and Other Liabilities and Other within Current Liabilities on the Consolidated Balance Sheets. These reserves are based upon the minimum amount of the range of loss for current and future asbestos claims through 2033,2036, are recorded on an undiscounted basis and incorporate anticipated inflation. In light of the uncertainties inherent in a longer-term forecast, management does not believe they can reasonably estimate the indemnity and medical costs that might be incurred after 20332036 related to such potential claims. It is possible Duke Energy Carolinas may incur asbestos liabilities in excess of the recorded reserves.
Duke Energy Carolinas has third-party insurance to cover certain losses related to asbestos-related injuries and damages above an aggregate self-insured retention. Duke Energy Carolinas’ cumulative payments began to exceed the self-insurance retention in 2008. Future payments up to the policy limit will be reimbursed by the third-party insurance carrier. The insurance policy limit for potential future insurance recoveries indemnification and medical cost claim payments is $847$814 million in excess of the self-insured retention. Receivables for insurance recoveries were $599$587 million and $616$599 million at December 31, 20152016 and 2014,2015, respectively. These amounts are classified in Other within Investments and Other Assets and Receivables on the Consolidated Balance Sheets. Duke Energy Carolinas is not aware of any uncertainties regarding the legal sufficiency of insurance claims. Duke Energy Carolinas believes the insurance recovery asset is probable of recovery as the insurance carrier continues to have a strong financial strength rating.
Duke Energy Progress and Duke Energy Florida
Spent Nuclear Fuel Matters
On December 12, 2011,October 16, 2014, Duke Energy Progress and Duke Energy Florida sued the United StatesU.S. in the U.S. Court of Federal Claims. The lawsuit claimed the Department of Energy breached a contract in failing to accept spent nuclear fuel under the Nuclear Waste Policy Act of 1982 and asserted damages for the cost of on-site storage. Duke Energy Progress and Duke Energy Florida asserted damages for the period January 1, 20062011 through December 31, 2010.2013, of $48 million and $25 million, respectively. Claims for all periods prior to 20062011 have been resolved. On March 24, 2014,Additional claims are likely to be filed after the U.S. Court of Federal Claims issued a judgment in favor ofcurrent litigation is resolved. Trial has been set for June 2017. Duke Energy Progress and Duke Energy Florida oncannot predict the outcome of this matter, awarding amounts of $83 million and $21 million, respectively. The majority of the awards were recorded as a reduction to capital costs associated with construction of on-site storage facilities. Duke Energy Progress and Duke Energy Florida received payment of the award in September 2014. On October 16, 2014, Duke Energy Progress and Duke Energy Florida filed a new action for costs incurred from 2011 through 2013 of $48 million and $25 million, respectively.matter.
Duke Energy Florida
Class Action Lawsuit
On February 22, 2016, Newton, et al v. Duke Energy Florida, LLC and Florida Power & Light Company,a lawsuit was filed in the U.S. District Court for the Southern District of Florida on behalf of a putative class of Duke Energy Florida and Florida Power & Light Company’sFP&L’s customers in Florida. Plaintiffs allege thatThe suit alleges the State of Florida’s Nuclear Cost Recovery Statutesnuclear power plant cost recovery statutes (NCRS) are unconstitutional and are pre-empted by federal law. Plaintiffs claim they are entitled to repayment of all money paid by customers of Duke Energy Florida and FP&L as a result of the NCRS, as well as an injunction against any future charges under those statutes. The constitutionality of the NCRS has not yet been servedchallenged unsuccessfully in a number of prior cases on alternative grounds. Duke Energy Florida and FP&L filed motions to dismiss the complaint on May 5, 2016. On September 21, 2016, the Court granted the motions to dismiss with prejudice. Plaintiffs filed a motion for reconsideration, which was denied. On January 4, 2017, plaintiffs filed a notice of appeal. Duke Energy Florida cannot predict the lawsuit.outcome of this appeal.
Westinghouse Contract Litigation
On March 28, 2014, Duke Energy Florida filed a lawsuit against Westinghouse in the U.S. District Court for the Western District of North Carolina. The lawsuit seeks recovery of $54 million in milestone payments in excess of work performed under the terminated EPC for Levy as well as a determination by the court of the amounts due to Westinghouse as a result of the termination of the EPC. Duke Energy Florida recognized an exit obligation as a result of the termination of the EPC contract.

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On March 31, 2014, Westinghouse filed a lawsuit against Duke Energy Florida in U.S. District Court for the Western District of Pennsylvania. The Pennsylvania lawsuit alleged damages under the EPC in excess of $510 million for engineering and design work, costs to end supplier contracts and an alleged termination fee.
On June 9, 2014, the judge in the North Carolina case ruled that the litigation will proceed in the Western District of North Carolina. In November 2014,On July 11, 2016, Duke Energy Florida and Westinghouse filed a Motionseparate Motions for Partial JudgmentSummary Judgment. On September 29, 2016, the court issued its ruling on the pleadings, whichparties' respective Motions for Summary Judgment, ruling in favor of Westinghouse on a $30 million termination fee claim and dismissing Duke Energy Florida's $54 million refund claim, but stating that Duke Energy Florida could use the refund claim to offset any damages for termination costs. Westinghouse's claim for termination costs was denied on March 30, 2015. The case isunaffected by this ruling and continued to be readytrial. At trial, Westinghouse reduced its claim for termination costs from $482 million to $424 million.
Following a trial on September 19, 2016. the matter, the court issued its final order in December 2016 denying Westinghouse’s claim for termination costs and re-affirming its earlier ruling in favor of Westinghouse on the $30 million termination fee and Duke Energy Florida’s refund claim. Judgment was entered against Duke Energy Florida in the amount of approximately $34 million, which includes pre-judgment interest. Westinghouse has appealed the trial court's order and Duke Energy Florida has cross-appealed.
It is not possible to predict the ultimate outcome of the litigation, whether Duke Energy Florida will ultimately have any liability for terminatingappeal of the EPC contract or to estimate the damages, if any, it might incur in connection with these matters.trial court's order. Ultimate resolution of these matters could have a material effect on the results of operations, financial position or cash flows of Duke Energy Florida. However, appropriate regulatory recovery will be pursued for the retail portion of any costs incurred in connection with such resolution.
MGP Cost Recovery Action
On December 30, 2011, Duke Energy Florida filed a lawsuit against FirstEnergy Corp. (FirstEnergy) to recover investigation and remediation costs incurred by Duke Energy Florida in connection with the restoration of two former MGP sites in Florida. Duke Energy Florida alleged that FirstEnergy, as the successor to Associated Gas & Electric Co., owes past and future contribution and response costs of up to $43 million for the investigation and remediation of MGP sites. On December 6, 2016, the trial court entered judgment against Duke Energy Florida in the case. In January 2017, Duke Energy Florida appealed the decision to the U.S. Court of Appeals for the 6th Circuit. Duke Energy Florida cannot predict the outcome of this appeal.
Duke Energy Ohio
Antitrust Lawsuit
In January 2008, four plaintiffs, including individual, industrial and nonprofit customers, filed a lawsuit against Duke Energy Ohio in federal court in the Southern District of Ohio. Plaintiffs alleged Duke Energy Ohio conspired to provide inequitable and unfair price advantages for certain large business consumers by entering into nonpublic option agreements in exchange for their withdrawal of challenges to Duke Energy Ohio’s Rate Stabilization Plan implemented in early 2005. In March 2014, a federal judge certified this matter as a class action. Plaintiffs allegealleged claims forof antitrust violations under the federal Robinson Patman Act as well as fraud and conspiracy allegations under the federal Racketeer Influenced and Corrupt Organizations statute and the Ohio Corrupt Practices Act.
On October 21,During 2015, the parties received preliminary court approval forof a settlement agreement. ADuke Energy Ohio recorded a litigation settlement reserve was recorded for the full amount of $81 million and classified in Other within Current Liabilities on Duke Energy Ohio'sthe Consolidated Balance Sheets as ofSheet at December 31, 2015. Duke Energy Ohio also recognized the full amounta pretax charge of $81 million in (Loss) Income From Discontinued Operations, net of tax in the Consolidated Statements of Operations and Comprehensive Income for the twelve monthsyear ended December 31, 2015. AThe settlement agreement was approved at a federal court hearing to consider objections toon April 19, 2016. Distribution of the settlement is scheduled for April 2016.

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Combined Notes To Consolidated Financial Statements – (Continued)

checks was approved by the court in January 2017. See Note 2 for further discussion on the Midwest Generation Exit.
W.C. Beckjord Fuel Release
On August 18, 2014, approximately 9,000 gallons of fuel oil were inadvertently discharged into the Ohio River during a fuel oil transfer at the W.C. Beckjord generating station. The Ohio Environmental Protection Agency (Ohio EPA) issued a Notice of ViolationNOV related to the discharge. On November 22, 2016, Duke Energy Ohio is cooperatingentered into a plea agreement with the Ohio EPA, the EPA and the U.S. Attorney for the Southern District of Ohio. No NoticeTerms of Violation has been issued by the EPAagreement include a misdemeanor violation of the CWA, a fine of $1 million and no penalty has been assessed. Total repair and remediation costs relateda $100 thousand contribution to the releaseFoundation for Ohio River Education, which were not material. Otherpaid in fourth quarter 2016. Duke Energy Ohio has also reimbursed government and private entities for approximately $1 million of costs related toincurred as a result of the release, including state or federal civil or criminal enforcement proceedings, cannot be reasonably estimated at this time.fuel release.
Duke Energy Indiana
Edwardsport IGCCBenton County Wind Farm Dispute
On December 11, 2012,16, 2013, Benton County Wind Farm LLC (BCWF) filed a lawsuit against Duke Energy Indiana filed an arbitration actionseeking damages for past generation losses totaling approximately $16 million alleging Duke Energy Indiana violated its obligations under a 2006 PPA by refusing to offer electricity to the market at negative prices. Damage claims continue to increase during times that BCWF is not dispatched. Under 2013 revised MISO market rules, Duke Energy Indiana is required to make a price offer to MISO for the power it proposes to sell into MISO markets and MISO determines whether BCWF is dispatched. Because market prices would have been negative due to increased market participation, Duke Energy Indiana determined it would not bid at negative prices in order to balance customer needs against General Electric CompanyBCWF's need to run. BCWF contends Duke Energy Indiana must bid at the lowest negative price to ensure dispatch, while Duke Energy Indiana contends it is not obligated to bid at any particular price, that it cannot ensure dispatch with any bid and Bechtel Corporationthat is has reasonably balanced the parties' interests. On July 6, 2015, the U.S. District Court for the Southern District of Indiana entered judgment against BCWF on all claims. BCWF appealed the decision and on December 9, 2016, the appeals court ruled in favor of BCWF. The matter has been remanded to a lower court to determine damages. Duke Energy Indiana cannot predict the outcome of this matter. Ultimate resolution of this matter could have a material effect on the results of operations, financial position or cash flows of Duke Energy Indiana. However, appropriate regulatory recovery will be pursued for the retail portion of any costs incurred in connection with their work at the Edwardsport IGCC facility. Duke Energy Indiana sought damages equaling some or all of the additional costs incurred in the construction of the project not recovered at the IURC. The arbitration hearing concluded in December 2014. On May 6, 2015, the arbitration panel issued its final decision unanimously dismissing all of Duke Energy Indiana’s claims. This ruling resolves all outstanding issues in the arbitration.such resolution.

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DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Other Litigation and Legal Proceedings
The Duke Energy Registrants are involved in other legal, tax and regulatory proceedings arising in the ordinary course of business, some of which involve significant amounts. The Duke Energy Registrants believe the final disposition of these proceedings will not have a material effect on their results of operations, cash flows or financial position.
The table below presents recorded reserves based on management’s best estimate of probable loss for legal matters, excluding asbestos-related reserves and the exit obligation discussed above related to the termination of an EPC contract. Reserves are classified on the Consolidated Balance Sheets in Other within Deferred Credits and Other Liabilities and Accounts payable and Other within Current Liabilities. The reasonably possible range of loss in excess of recorded reserves is not material, other than as described above.
December 31,December 31,
(in millions)
2015
 2014
2016
 2015
Reserves for Legal Matters      
Duke Energy$166
 $323
$98
 $156
Duke Energy Carolinas11
 72
23
 11
Progress Energy54
 93
59
 54
Duke Energy Progress6
 37
14
 6
Duke Energy Florida31
 36
28
 31
Duke Energy Ohio80
 
4
 80
OTHER COMMITMENTS AND CONTINGENCIES
General
As part of their normal business, the Duke Energy Registrants are party to various financial guarantees, performance guarantees and other contractual commitments to extend guarantees of credit and other assistance to various subsidiaries, investees and other third parties. These guarantees involve elements of performance and credit risk, which are not fully recognized on the Consolidated Balance Sheets and have unlimited maximum potential payments. However, the Duke Energy Registrants do not believe these guarantees will have a material effect on their results of operations, cash flows or financial position.
Purchase Obligations
Purchased Power
Duke Energy Progress, Duke Energy Florida and Duke Energy FloridaOhio have ongoing purchased power contracts, including renewable energy contracts, with other utilities, wholesale marketers, co-generators and qualified facilities. These purchased power contracts generally provide for capacity and energy payments. In addition, Duke Energy Progress and Duke Energy Florida have various contracts to secure transmission rights.
The following table presents executory purchased power contracts with terms exceeding one year, excluding contracts classified as leases.
  Minimum Purchase Amount at December 31, 2015  Minimum Purchase Amount at December 31, 2016
Contract              Contract              
(in millions)Expiration 2016
 2017
 2018
 2019
 2020
 Thereafter
 Total
Expiration 2017
 2018
 2019
 2020
 2021
 Thereafter
 Total
Duke Energy Progress(a)
2019-2031 $54
 $60
 $61
 $62
 $49
 $363
 $649
2019-2031 $66
 $67
 $67
 $50
 $51
 $267
 $568
Duke Energy Florida(b)
2021-2043 305
 345
 360
 377
 394
 1,591
 3,372
2021-2043 341
 357
 377
 394
 376
 1,211
 3,056
Duke Energy Ohio(c)(d)
2017-2018 236
 195
 59
 
 
 
 490
2018 203
 89
 
 
 
 
 292

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DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

(a)    Contracts represent between 15 percent and 100 percent of net plant output.
(b)     Contracts represent between 8081 percent and 100 percent of net plant output.
(c)    Contracts represent between 1 percent and 11 percent of net plant output.
(d)    Excludes purchase power agreementPPA with OVEC. See Note 17 for additional information.
Gas Supply and Capacity Contracts
Duke Energy and Duke Energy Ohio routinely enter into long-term gas supply commodity and capacity commitments and other agreements that commit future cash flows to acquire services needed in their businesses. These commitments include pipeline and storage capacity contracts and natural gas supply contracts to provide service to customers. Costs arising from the natural gas supply commodity and capacity commitments, while significant, are pass-through costs to customers and are generally fully recoverable through the fuel adjustment or PGA procedures and prudence reviews in North Carolina and South Carolina and under the Tennessee Incentive Plan in Tennessee. In the Midwest, these costs are recovered via the Gas Cost Recovery Rate in Ohio or the Gas Cost Adjustment Clause in Kentucky. The time periods for fixed payments under pipeline and storage capacity contracts are up to 19 years. The time periods for fixed payments under natural gas supply contracts are up to three years. The time period for the natural gas supply purchase commitments is up to 15 years.

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DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Certain storage and pipeline capacity contracts require the payment of demand charges that are based on rates approved by the FERC in order to maintain rights to access the natural gas storage or pipeline capacity on a firm basis during the contract term. The demand charges that are incurred in each period are recognized in the Consolidated Statements of Operations and Comprehensive Income as part of natural gas purchases and are included in Cost of natural gas.
The following table presents future unconditional purchase obligations under natural gas supply and capacity contracts as of December 31, 2016.
(in millions)Duke EnergyDuke Energy Ohio
2017$371
$52
2018308
35
2019286
26
2020269
22
2021267
22
Thereafter1,595
7
Total$3,096
$164
Operating and Capital Lease Commitments
The Duke Energy Registrants lease office buildings, railcars, vehicles, computer equipment and other property and equipment with various terms and expiration dates. Additionally, Duke Energy Progress has a capital lease related to firm gas pipeline transportation capacity. Duke Energy Progress and Duke Energy Florida have entered into certain purchased power agreements, which are classified as leases. Consolidated capitalized lease obligations are classified as Long-Term Debt or Other within Current Liabilities on the Consolidated Balance Sheets. Amortization of assets recorded under capital leases is included in Depreciation and amortization and Fuel used in electric generation – regulated on the Consolidated Statements of Operations.
The following table presents rental expense for operating leases. These amounts are included in Operation, maintenance and other on the Consolidated Statements of Operations.
Years Ended December 31,Years Ended December 31,
(in millions)2015
 2014
 2013
2016
 2015
 2014
Duke Energy$318
 $355
 $321
$242
 $313
 $350
Duke Energy Carolinas41
 41
 39
45
 41
 41
Progress Energy230
 257
 225
140
 230
 257
Duke Energy Progress149
 161
 153
68
 149
 161
Duke Energy Florida81
 96
 72
72
 81
 96
Duke Energy Ohio13
 17
 14
16
 13
 17
Duke Energy Indiana20
 21
 22
23
 20
 21
The following table presents future minimum lease payments under operating leases, which at inception had a non-cancelable term of more than one year.
December 31, 2015December 31, 2016
  Duke
   Duke
 Duke
 Duke
 Duke
  Duke
   Duke
 Duke
 Duke
 Duke
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
2016$219
 $41
 $132
 $66
 $66
 $13
 $20
2017182
 33
 111
 63
 48
 9
 15
$218
 $41
 $129
 $75
 $54
 $12
 $20
2018161
 24
 108
 61
 47
 6
 12
205
 35
 126
 73
 53
 11
 17
2019146
 21
 102
 56
 46
 4
 8
181
 27
 120
 68
 52
 7
 11
2020127
 16
 93
 48
 45
 3
 5
164
 23
 109
 58
 51
 6
 10
2021134
 17
 91
 43
 48
 4
 6
Thereafter864
 51
 622
 365
 257
 5
 8
948
 52
 602
 379
 223
 7
 9
Total$1,699
 $186
 $1,168
 $659
 $509
 $40
 $68
$1,850
 $195
 $1,177
 $696
 $481
 $47
 $73

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DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

The following table presents future minimum lease payments under capital leases.
December 31, 2015December 31, 2016
  Duke
   Duke
 Duke
 Duke
 Duke
  Duke
   Duke
 Duke
 Duke
 Duke
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
2016$173
 $6
 $46
 $20
 $26
 $7
 $3
2017171
 6
 46
 21
 25
 1
 1
$148
 $6
 $46
 $21
 $25
 $4
 $1
2018180
 6
 46
 21
 25
 5
 2
154
 6
 46
 21
 25
 3
 2
2019178
 6
 45
 22
 25
 1
 1
154
 6
 45
 20
 25
 1
 1
2020182
 5
 46
 21
 25
 
 1
159
 5
 46
 22
 25
 
 1
2021163
 1
 45
 20
 25
 
 1
Thereafter1,176
 30
 367
 272
 95
 1
 43
784
 30
 322
 250
 71
 
 41
Minimum annual payments2,060
 59
 596
 377
 221
 15
 51
1,562
 54
 550
 354
 196
 8
 47
Less: amount representing interest(724) (35) (295) (230) (65) (2) (38)(462) (32) (265) (212) (53) (1) (36)
Total$1,336
 $24
 $301
 $147
 $156
 $13
 $13
$1,100
 $22
 $285
 $142
 $143
 $7
 $11

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DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

6. DEBT AND CREDIT FACILITIES
Summary of Debt and Related Terms
The following tables summarize outstanding debt.
December 31, 2015December 31, 2016
Weighted
  Weighted
  
Average
  Duke
 Duke
Duke
Duke
Duke
Average
  Duke
 Duke
Duke
Duke
Duke
Interest
 Duke
Energy
Progress
Energy
Energy
Energy
Energy
Interest
 Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions) Rate  
 Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Rate
 Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Unsecured debt, maturing 2016 - 2073 4.99% $13,392
$1,152
$3,850
$
$150
$765
$740
Secured debt, maturing 2016 - 20372.57% 2,635
425
479
254
225


First mortgage bonds, maturing 2016 - 2045(a)
4.74% 18,980
6,161
9,750
5,975
3,775
750
2,319
Capital leases, maturing 2016 - 2051(b)
5.38% 1,336
24
300
144
156
13
14
Unsecured debt, maturing 2017 - 20734.30% $17,812
$1,150
$3,551
$
$150
$810
$415
Secured debt, maturing 2017 - 20372.60% 3,909
425
1,819
300
1,519


First mortgage bonds, maturing 2017 - 2046(a)
4.61% 21,879
7,410
10,800
6,425
4,375
1,000
2,669
Capital leases, maturing 2018 - 2051(b)
4.48% 1,100
22
285
142
143
7
11
Tax-exempt bonds, maturing 2017 - 2041(c)
2.59% 1,053
355
48
48

77
572
2.84% 1,053
355
48
48

77
572
Notes payable and commercial paper(d)
0.88% 4,258






1.01% 3,112






Money pool/intercompany borrowings (e)   
300
1,458
359
813
128
150
  
300
1,902
150
297
41
150
Fair value hedge carrying value adjustment    6
6





  6
6





Unamortized debt discount and premium, net(e)(f)
   1,712
(17)(28)(16)(8)(28)(8)  1,753
(20)(31)(16)(10)(28)(9)
Unamortized debt issuance costs(f)(g)
  (170)(39)(85)(37)(32)(4)(19)  (242)(45)(104)(38)(52)(7)(22)
Total debt 4.25% $43,202
$8,367
$15,772
$6,727
$5,079
$1,701
$3,768
4.07% $50,382
$9,603
$18,270
$7,011
$6,422
$1,900
$3,786
Short-term notes payable and commercial paper    (3,633)





  (2,487)





Short-term money pool/intercompany borrowings   

(1,308)(209)(813)(103)
  

(729)
(297)(16)
Current maturities of long-term debt(g)(h)
   (2,074)(356)(315)(2)(13)(106)(547)  (2,319)(116)(778)(452)(326)(1)(3)
Total long-term debt(g)(h)

 $37,495
$8,011
$14,149
$6,516
$4,253
$1,492
$3,221

 $45,576
$9,487
$16,763
$6,559
$5,799
$1,883
$3,783
(a)Substantially all electric utility property is mortgaged under mortgage bond indentures.
(b)Duke Energy includes $98 million and $670 million of capital lease purchase accounting adjustments related to Duke Energy Progress and Duke Energy Florida, respectively, related to power purchase agreements that are not accounted for as capital leases in their respective financial statements because of grandfathering provisions in GAAP.
(c)Substantially all tax-exempt bonds are secured by first mortgage bonds or letters of credit.
(d)Includes $625 million that was classified as Long-Term Debt on the Consolidated Balance Sheets due to the existence of long-term credit facilities that backstop these commercial paper balances, along with Duke Energy’s ability and intent to refinance these balances on a long-term basis. The weighted average days to maturity for Duke Energy and Piedmont's commercial paper programs were 14 days and eight days, respectively.
(e)Progress Energy amount includes a $1 billion intercompany loan related to the sale of the International Disposal Group. See Note 2 for further discussion of the sale.
(f)Duke Energy includes $1,653 million and $197 million in purchase accounting adjustments related to Progress Energy and Piedmont, respectively.
(g)Duke Energy includes $53 million in purchase accounting adjustments primarily related to the merger with Progress Energy.
(h)Refer to Note 17 for additional information on amounts from consolidated VIEs.

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DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

 December 31, 2015
 Weighted
        
 Average
  Duke
 Duke
Duke
Duke
Duke
 Interest
 Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)Rate
 Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Unsecured debt, maturing 2016 - 20734.68% $12,960
$1,152
$3,850
$
$150
$765
$740
Secured debt, maturing 2016 - 20372.37% 2,361
425
479
254
225


First mortgage bonds, maturing 2016 - 2045(a)
4.74% 18,980
6,161
9,750
5,975
3,775
750
2,319
Capital leases, maturing 2016 - 2051(b)
5.39% 1,335
24
300
144
156
13
14
Tax-exempt bonds, maturing 2017 - 2041(c)
2.59% 1,053
355
48
48

77
572
Notes payable and commercial paper(d)
0.88% 4,258






Money pool/intercompany borrowings  
300
1,458
359
813
128
150
Fair value hedge carrying value adjustment  6
6





Unamortized debt discount and premium, net(e)
  1,712
(17)(28)(16)(8)(28)(8)
Unamortized debt issuance costs(f)
  (164)(39)(85)(37)(32)(4)(19)
Total debt4.15% $42,501
$8,367
$15,772
$6,727
$5,079
$1,701
$3,768
Short-term notes payable and commercial paper  (3,633)





Short-term money pool/intercompany borrowings  

(1,308)(209)(813)(103)
Current maturities of long-term debt(g)
  (2,026)(356)(315)(2)(13)(106)(547)
Total long-term debt(g)

 $36,842
$8,011
$14,149
$6,516
$4,253
$1,492
$3,221
(a)Substantially all electric utility property is mortgaged under mortgage bond indentures.
(b)Duke Energy includes $114 million and $731 million of capital lease purchase accounting adjustments related to Duke Energy Progress and Duke Energy Florida, respectively, related to power purchase agreements that are not accounted for as capital leases in their respective financial statements because of grandfathering provisions in GAAP.
(c)Substantially all tax-exempt bonds are secured by first mortgage bonds or letters of credit.
(d)Includes $625 million that was classified as Long-Term Debt on the Consolidated Balance Sheets due to the existence of long-term credit facilities that back-stopbackstop these commercial paper balances, along with Duke Energy’s ability and intent to refinance these balances on a long-term basis. The weighted average days to maturity for commercial paper was 15 days.
(e)Duke Energy includes $1,798 million in purchase accounting adjustments related to the merger with Progress Energy.
(f)Duke Energy includes $59 million in purchase accounting adjustments primarily related to the merger with Progress Energy.
(g)Refer to Note 17 for additional information on amounts from consolidated VIEs.

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DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

  December 31, 2014
 Weighted
        
 Average
  Duke
 Duke
Duke
Duke
Duke
 Interest
 Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)  Rate  
 Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Unsecured debt, maturing 2015 - 2073  4.92% $12,937
$1,155
$3,850
$
$150
$773
$742
Secured debt, maturing 2016 - 20372.50% 2,806
400
525
300
225


First mortgage bonds, maturing 2015 - 2044(a)
4.76% 19,180
6,161
9,800
5,475
4,325
900
2,319
Capital leases, maturing 2015 - 2051(b)
5.30% 1,428
27
314
146
168
20
16
Tax-exempt bonds, maturing 2015 - 2041(c)
2.13% 1,296
355
291
291

77
573
Notes payable and commercial paper(d)
0.70% 2,989






Money pool/intercompany borrowings     
300
835

84
516
221
Fair value hedge carrying value adjustment     8
8





Unamortized debt discount and premium, net(e)
   1,890
(15)(26)(11)(8)(29)(9)
Unamortized debt issuance costs  (152)(38)(86)(31)(37)(6)(22)
Total debt  4.29% $42,382
$8,353
$15,503
$6,170
$4,907
$2,251
$3,840
Short-term notes payable and commercial paper     (2,514)





Short-term money pool/intercompany borrowings    

(835)
(84)(491)(71)
Current maturities of long-term debt(f)
   (2,807)(507)(1,507)(945)(562)(157)(5)
Total long-term debt(f)

 $37,061
$7,846
$13,161
$5,225
$4,261
$1,603
$3,764
(a)Substantially all electric utility property is mortgaged under mortgage bond indentures.
(b)Duke Energy includes $129 million and $787 million of capital lease purchase accounting adjustments related to Duke Energy Progress and Duke Energy Florida, respectively, related to power purchase agreements that are not accounted for as capital leases in their respective financial statements because of grandfathering provisions in GAAP.
(c)Substantially all tax-exempt bonds are secured by first mortgage bonds or letters of credit.
(d)Includes $475 million that was classified as Long-Term Debt on the Consolidated Balance Sheets due to the existence of long-term credit facilities that back-stop these commercial paper balances, along with Duke Energy’s ability and intent to refinance these balances on a long-term basis. The weighted average days to maturity for commercial paper was 27 days.
(e)Duke Energy includes $1,975 million in purchase accounting adjustments related to the merger with Progress Energy.
(f)Refer to Note 17 for additional information on amounts from consolidated VIEs.
Current Maturities of Long-Term Debt
The following table shows the significant components of Current maturities of long-term debtLong-Term Debt on the Consolidated Balance Sheets. The Duke Energy Registrants currently anticipate satisfying these obligations with cash on hand and proceeds from additional borrowings.
(in millions)Maturity Date Interest Rate
 December 31, 2015
Maturity Date Interest Rate
 December 31, 2016
Unsecured Debt        
Progress Energy (Parent)January 2016 5.625% $300
Duke Energy IndianaJune 2016 6.05% 325
Duke Energy (Parent)November 2016 2.150% 500
April 2017 1.226% $400
Duke Energy (Parent)August 2017 1.625% 700
Piedmont Natural GasSeptember 2017 8.510% 35
First Mortgage Bonds        
Duke Energy IndianaJuly 2016 0.670% 150
Duke Energy ProgressMarch 2017 1.146% 250
Duke Energy FloridaSeptember 2017 5.800% 250
Duke Energy ProgressNovember 2017 1.111% 200
Secured    
Duke EnergyJune 2017 2.365% 45
Duke EnergyJune 2017 2.260% 34
Tax-exempt Bonds    
Duke Energy CarolinasDecember 2016 1.750% 350
February 2017 3.600% 77
Other   449
Duke Energy CarolinasFebruary 2017 0.810% 10
Duke Energy CarolinasFebruary 2017 0.790% 25
Other(a)
   293
Current maturities of long-term debt   $2,074
   $2,319

157166


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DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

(a)Includes capital lease obligations, amortizing debt and small bullet maturities.
Maturities and Call Options
The following table shows the annual maturities of long-term debt for the next five years and thereafter. Amounts presented exclude short-term notes payable and commercial paper and money pool borrowings for the Subsidiary Registrants.
December 31, 2015December 31, 2016
  Duke
   Duke
 Duke
 Duke
 Duke
  Duke
   Duke
 Duke
 Duke
 Duke
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)
Energy(a)

 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Energy(a)

 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
2016$2,074
 $356
 $315
 $2
 $13
 $106
 $547
20172,468
 115
 923
 446
 482
 1
 2
$2,319
 $116
 $778
 $452
 $326
 $1
 $3
20183,441
 1,629
 510
 
 512
 5
 3
3,466
 1,629
 559
 
 561
 3
 3
20193,022
 5
 1,667
 855
 14
 552
 63
3,316
 5
 1,992
 902
 292
 551
 63
20202,091
 755
 415
 152
 265
 25
 653
2,112
 755
 469
 152
 319
 25
 653
20213,699
 501
 1,473
 602
 372
 49
 70
Thereafter24,616
 5,507
 10,634
 5,063
 2,980
 909
 2,500
31,090
 6,597
 12,270
 4,903
 4,255
 1,255
 2,994
Total long-term debt, including current maturities$37,712

$8,367

$14,464

$6,518

$4,266

$1,598

$3,768
$46,002

$9,603

$17,541

$7,011

$6,125

$1,884

$3,786
(a)Excludes $1,857$1,893 million in purchase accounting adjustments related to the Progress Energy merger with Progress Energy.and the Piedmont acquisition.
The Duke Energy Registrants have the ability under certain debt facilities to call and repay the obligation prior to its scheduled maturity. Therefore, the actual timing of future cash repayments could be materially different than as presented above.
Short-Term Obligations Classified as Long-Term Debt
Tax-exempt bonds that may be put to the Duke Energy Registrants at the option of the holder and certain commercial paper issuances and money pool borrowings are classified as Long-Term Debt on the Consolidated Balance Sheets. These tax-exempt bonds, commercial paper issuances and money pool borrowings, which are short-term obligations by nature, are classified as long term due to Duke Energy’s intent and ability to utilize such borrowings as long-term financing. As Duke Energy’s Master Credit Facility and other bilateral letter of credit agreements have non-cancelable terms in excess of one year as of the balance sheet date, Duke Energy has the ability to refinance these short-term obligations on a long-term basis. The following tables show short-term obligations classified as long-term debt.
December 31, 2015December 31, 2016
  Duke
 Duke
 Duke
 Duke
  Duke
 Duke
 Duke
 Duke
Duke
 Energy
 Energy
 Energy
 Energy
Duke
 Energy
 Energy
 Energy
 Energy
(in millions) Energy
 Carolinas
 Progress
 Ohio
 Indiana
Energy
 Carolinas
 Progress
 Ohio
 Indiana
Tax-exempt bonds $347
 $35
 $
 $27
 $285
$347
 $35
 $
 $27
 $285
Commercial paper(a)
625
 300
 150
 25
 150
625
 300
 150
 25
 150
Total $972

$335
 $150

$52

$435
$972

$335
 $150

$52

$435
December 31, 2014December 31, 2015
  Duke
 Duke
 Duke
  Duke
 Duke
 Duke
 Duke
Duke
 Energy
 Energy
 Energy
Duke
 Energy
 Energy
 Energy
 Energy
(in millions) Energy
 Carolinas
 Ohio
 Indiana
Energy
 Carolinas
 Progress
 Ohio
 Indiana
Tax-exempt bonds $347
 $35
 $27
 $285
$347
 $35
 $
 $27
 $285
Commercial paper (a)475
 300
 25
 150
625
 300
 150
 25
 150
Secured debt(b)
200
 
 
 
Total $1,022

$335

$52

$435
$972

$335

$150
 $52

$435
(a)Progress Energy amounts are equal to Duke Energy Progress amounts.
(b)In December 2015, Duke Energy used cash held by the lender to repay debt. Instrument had a term of less than one year with the right to extend the maturity date for additional one-year periods with a final maturity date no later than December 2026.
Summary of Significant Debt Issuances
Piedmont Acquisition Financing
In JanuaryAugust 2016, Duke Energy Kentucky issued $95 million$3.75 billion of senior unsecured debentures, of which $45 million carry a fixed interest rate of 3.42 percent and mature January 15, 2026 and $50 million carry a fixed interest rate of 4.45 percent and mature January 15, 2046. Proceeds will primarily benotes in three separate series. The net proceeds were used to refinance existing debt, including money pool borrowings, capital expenditures andfinance a portion of the Piedmont acquisition. The $4.9 billion Bridge Facility was terminated following the issuance of this debt. See Note 2 for general corporate purposes.additional information on the Piedmont acquisition.

158167


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Nuclear Asset-Recovery Bonds
In June 2016, DEFPF issued $1,294 million of nuclear asset-recovery bonds and used the proceeds to acquire nuclear asset-recovery property from its parent, Duke Energy Florida. The nuclear asset-recovery bonds are payable only from and secured by the nuclear asset-recovery property. DEFPF is consolidated for financial reporting purposes; however, the nuclear asset-recovery bonds do not constitute a debt, liability or other legal obligation of, or interest in, Duke Energy Florida or any of its affiliates other than DEFPF. The assets of DEFPF, including the nuclear asset-recovery property, are not available to pay creditors of Duke Energy Florida or any of its affiliates. Duke Energy Florida used the proceeds from the sale to repay short-term borrowings under the intercompany money pool borrowing arrangement and make an equity distribution of $649 million to the ultimate parent, Duke Energy (Parent), which repaid short-term borrowings. See Notes 4 and 17 for additional information.
Solar Facilities Financing
In August 2016, Emerald State Solar, LLC, an indirect wholly owned subsidiary of Duke Energy, entered into a $333 million portfolio financing of approximately 22 North Carolina Solar facilities. Tranche A of $228 million is secured by substantially all the assets of the solar facilities and is nonrecourse to Duke Energy. Tranche B of $105 million is secured by an Equity Contribution Agreement with Duke Energy. Proceeds were used to reimburse Duke Energy for a portion of previously funded construction expenditures related to the Emerald State Solar, LLC portfolio. The initial interest rate on the loans was six months London Interbank Offered Rate (LIBOR) plus an applicable margin of 1.75 percent plus a 0.125 percent increase every three years thereafter. In connection with this debt issuance, Emerald State Solar, LLC entered into two interest rate swaps to convert the substantial majority of the loan interest payments from variable rates to fixed rates of approximately 1.81 percent for Tranche A and 1.38 percent for Tranche B, plus the applicable margin. See Note 14 for further information on the notional amounts of the interest rate swaps.
Duke Energy Florida Bond Issuance
In January 2017, Duke Energy Florida issued $900 million of first mortgage bonds. The issuance was split between a $250 million, three-year series and a $650 million, 10-year series. The net proceeds from the issuance were used to repay at maturity $250 million aggregate principal amount of bonds due September 2017, as well as to fund capital expenditures for ongoing construction and capital maintenance and for general corporate purposes.
The following tables summarize significant debt issuances (in millions).
     Year Ended December 31, 2016  
       Duke
 Duke
 Duke
 Duke
 Duke
 Duke
 Maturity Interest
 Duke
 Energy
 Energy
 Energy
 Energy
 Energy
 Energy
Issuance DateDate Rate
 Energy
 (Parent)
 Carolinas
 Progress
 Florida
 Ohio
 Indiana
Unsecured Debt                 
April 2016(a)
April 2023 2.875% $350
 $350
 $
 $
 $
 $
 $
August 2016September 2021 1.800% 750
 750
 
 
 
 
 
August 2016September 2026 2.650% 1,500
 1,500
 
 
 
 
 
August 2016September 2046 3.750% 1,500
 1,500
 
 
 
 
 
Secured Debt    

            
June 2016(b)
March 2020 1.196% 183
 
 
 
 183
 
 
June 2016(b)
September 2022 1.731% 150
 
 
 
 150
 
 
June 2016(b)
September 2029 2.538% 436
 
 
 
 436
 
 
June 2016(b)
March 2033 2.858% 250
 
 
 
 250
 
 
June 2016(b)
September 2036 3.112% 275
 
 
 
 275
 
 
August 2016June 2034 2.747% 228
 
 
 
 
 
 
August 2016June 2020 2.747% 105
 
 
 
 
 
 
First Mortgage Bonds    

            
March 2016(c)
March 2023 2.500% 500
 
 500
 
 
 
 
March 2016(c)
March 2046 3.875% 500
 
 500
 
 
 
 
May 2016(d)
May 2046 3.750% 500
 
 
 
 
 
 500
June 2016(c)
June 2046 3.700% 250
 
 
 
 
 250
 
September 2016(e)
October 2046 3.400% 600
 
 
 
 600
 
 
September 2016(c)
October 2046 3.700% 450
 
 
 450
 
 
 
November 2016(f)
December 2026 2.950% 600
 
 600
 
 
 
 
Total issuances    $9,127
 $4,100

$1,600
 $450
 $1,894
 $250
 $500
(a)Proceeds were used to pay down outstanding commercial paper and for general corporate purposes.
(b)The nuclear asset recovery bonds are sequential pay amortizing bonds. The maturity date above represents the scheduled final maturity date for the bonds.
(c)Proceeds were used to fund capital expenditures for ongoing construction, capital maintenance and for general corporate purposes.

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PART II
DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

(d)Proceeds were used to repay $325 million of unsecured debt due June 2016, $150 million of first mortgage bonds due July 2016 and for general corporate purposes.
(e)Proceeds were used to fund capital expenditures for ongoing construction, capital maintenance, to repay short-term borrowings under the intercompany money pool borrowing arrangement and for general corporate purposes.
(f)Proceeds were used to repay at maturity $350 million aggregate principal amount of certain bonds due December 2016, as well as to fund capital expenditures for ongoing construction and capital maintenance and for general corporate purposes.
     Year Ended December 31, 2015
       Duke
 Duke
 Duke
 Maturity Interest
 Duke
 Energy
 Energy
 Energy
Issuance DateDate Rate
 Energy
 (Parent)
 Carolinas
 Progress
Unsecured Debt           
November 2015(a)(b)
April 2024 3.750% $400
 $400
 $
 $
November 2015(a)(b)
December 2045 4.800% 600
 600
 
 
First Mortgage Bonds           
March 2015(c)
June 2045 3.750% 500
 
 500
 
August 2015(a)(d)
August 2025 3.250% 500
 
 
 500
August 2015(a)(d)
August 2045 4.200% 700
 
 
 700
Total issuances    $2,700
 $1,000

$500
 $1,200
(a)Proceeds were used to repay short-term money pool and commercial paper borrowing issued to fund a portion of the NCEMPA acquisition, see Note 2 for further information.
(b)Proceeds were used to refinance at maturity $300 million of unsecured notes at Progress Energy due January 2016.
(c)Proceeds were used to redeem at maturity $500 million of first mortgage bonds due October 2015.
(d)Proceeds were used to refinance at maturity $400 million of first mortgage bonds due December 2015.
     Year Ended December 31, 2014
       Duke
 Duke
 Duke
 Maturity Interest
 Duke
 Energy
 Energy
 Energy
Issuance DateDate Rate
 Energy
 (Parent)
 Progress
 Florida
Unsecured Debt           
April 2014(a)
April 2024 3.750% $600
 $600
 $
 $
April 2014(a)(b)
April 2017 0.613% 400
 400
 
 
June 2014(c)
May 2019 11.970% 108
 
 
 
June 2014(c)
May 2021 13.680% 110
 
 
 
Secured Debt           
March 2014(d)
March 2017 0.863% 225
 
 
 225
July 2014(e)
July 2036 5.340% 129
 
 
 
First Mortgage Bonds           
March 2014(f)
March 2044 4.375% 400
 
 400
 
March 2014(f)(g)
March 2017 0.435% 250
 
 250
 
November 2014(h)
December 2044 4.150% 500
 
 500
 
November 2014(g)(h)
November 2017 0.432% 200
 
 200
 
Total issuances    $2,922
 $1,000

$1,350

$225
(a)Proceeds were used to redeem $402 million of tax-exempt bonds at Duke Energy Ohio, the repayment of outstanding commercial paper and for general corporate purposes. See Note 13 for additional information related to the redemption of Duke Energy Ohio's tax-exempt bonds.
(b)The debt is floating rate based on three-month London Interbank Offered Rate (LIBOR) plus a fixed credit spread of 38 basis points.
(c)Proceeds were used to repay $196 million of debt for International Energy and for general corporate purposes. The interest rates include country specific risk premiums.
(d)Relates to the securitization of accounts receivable at a subsidiary of Duke Energy Florida. Proceeds were used to repay short-term borrowings under the intercompany money pool borrowing arrangement and for general corporate purposes. See Note 17 for further details.
(e)Proceeds were used to fund a portion of Duke Energy's prior investment in the existing Wind Star renewables portfolio.
(f)Proceeds were used to repay short-term borrowings under the intercompany money pool borrowing arrangement and for general corporate purposes.
(g)The debt is floating rate based on three-month LIBOR plus a fixed credit spread of 20 basis points.
(h)Proceeds were used to redeem $450 million of tax-exempt bonds, repay short-term borrowings under the intercompany money pool borrowing arrangement and for general corporate purposes.

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PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

Available Credit Facilities
Duke Energy has a Master Credit Facility with a capacity of $7.5 billion through January 2020. The Duke Energy Registrants, excluding Progress Energy (Parent), and Piedmont, have borrowing capacity under the Master Credit Facility up to specified sublimits for each borrower. Duke Energy has the unilateral ability at any time to increase or decrease the borrowing sublimits of each borrower, subject to a maximum sublimit for each borrower. The amount available under the Master Credit Facility has been reduced to backstop the issuances of commercial paper, certain letters of credit and variable-rate demand tax-exempt bonds that may be put to the Duke Energy Registrants at the option of the holderholder. Duke Energy Carolinas and Duke Energy Progress are also required to each maintain $250 million of available capacity under the Master Credit Facility as security to meet obligations under plea agreements reached with the Plea Agreements. U.S. Department of Justice in 2015 related to violations at North Carolina facilities with ash basins.
Piedmont has a separate five-year revolving syndicated credit facility, with a capacity of $850 million through December 2020 and an expansion option of up to an additional $200 million. The facility provides a line of credit for letters of credit of $10 million.
The table below includes the current borrowing sublimits and available capacity under the Master Credit Facility.these credit facilities.
December 31, 2015December 31, 2016
  Duke
 Duke
 Duke
 Duke
 Duke
 Duke
  Duke
 Duke
 Duke
 Duke
 Duke
 Duke
Duke
 Energy
 Energy
 Energy
 Energy
 Energy
 Energy
Duke
 Energy
 Energy
 Energy
 Energy
 Energy
 Energy
(in millions) Energy
 (Parent)
 Carolinas
 Progress
 Florida
 Ohio
 Indiana
Energy(a)

 (Parent)
 Carolinas
 Progress
 Florida
 Ohio
 Indiana
Facility size(a)(b)
$7,500
 $3,475
 $800
 $1,000
 $1,200
 $425
 $600
$8,350
 $3,400
 $1,100
 $1,000
 $950
 $450
 $600
Reduction to backstop issuances                            
Commercial paper(b)(c)
(3,138) (1,531) (300) (333) (709) (115) (150)(2,022) (977) (300) (150) (84) (31) (150)
Outstanding letters of credit (72) (65) (4) (2) (1) 
 
(78) (69) (4) (2) (1) 
 
Tax-exempt bonds (116) 
 (35) 
 
 
 (81)(116) 
 (35) 
 
 
 (81)
Coal ash set-aside(c)
(500) 
 (250) (250) 
 
 
(500) 
 (250) (250) 
 
 
Available capacity $3,674

$1,879

$211

$415

$490

$310

$369
$5,634

$2,354

$511

$598

$865

$419

$369
(a)Includes amounts related to Piedmont's $850 million credit facility.
(b)Represents the sublimit of each borrower.
(b)(c)Duke Energy issued $625 million of commercial paper and loaned the proceeds through the money pool to Duke Energy Carolinas, Duke Energy Progress, Duke Energy Ohio and Duke Energy Indiana. The balances are classified as Long-Term Debt Payable to Affiliated Companies in the Consolidated Balance Sheets.
(c)On May 14, 2015, the United States District Court for the Eastern District of North Carolina approved the separate Plea Agreements entered into by Duke Energy Carolinas, Duke Energy Progress and DEBS, a wholly owned subsidiary of Duke Energy, in connection with the investigation initiated by the USDOJ. Duke Energy Carolinas and Duke Energy Progress are required to each maintain $250 million of available capacity under the Master Credit Facility as security to meet their obligations under the Plea Agreements, in addition to certain other conditions. See Note 5 for further details.

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PART II
DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Term Loan Facility
In connection with the Merger Agreement with Piedmont,2016, Duke Energy (Parent) entered into a $4.9$1.5 billion senior unsecured bridge financingterm loan facility, (Bridge Facility) with Barclays Capital, Inc. (Barclays). The Bridge Facility, if drawn upon, may be used (i) to fund the cash consideration for the transaction and (ii) to pay certain fees and expenses in connection with the transaction. In November 2015, Barclays syndicated its commitment under the Bridge Facility to a broader group of lenders. Duke Energy intends to finance the transaction with proceeds raised through the issuance of debt, equity, and other sources and, therefore, does not expect to draw upon the Bridge Facility. See Note 2 for further details.
On February 22,as amended (Term Loan) maturing on July 31, 2017. During 2016, Duke Energy entered into a six months term loan facility (Term Loan) with commitments totaling $1 billion to provide additional flexibility in managing short-term liquidity. The Term Loan can be drawn upon in a single borrowing of up to $1 billion, which must occur no later than 45 calendar days following February 22, 2016. As of February 24, 2016, no amounts have been drawn(Parent) drew the full amount available under the Term Loan.  Amounts drawn under this facility, if any, will be due on August 19, 2016.Loan and used $750 million of proceeds to fund a portion of the Piedmont acquisition and the remaining $750 million to manage short-term liquidity and for general corporate purposes. The terms and conditions of thisthe Term Loan are generally consistent with those governing theDuke Energy’s Master Credit Facility discussed above.Facility. In December 2016, Duke Energy (Parent) repaid the $1.5 billion term loan which terminated this credit facility.
Other Debt Matters
Duke Energy Florida expects to issue $1.3 billion of securitization bonds related to Crystal River Unit 3 in the first half of 2016. See Note 4 for additional details.
In September 2013,2016, Duke Energy filed a registrationRegistration statement (Form S-3) with the Securities and Exchange Commission (SEC).SEC. Under this Form S-3, which is uncapped, the Duke Energy Registrants, excluding Progress Energy, may issue debt and other securities in the future at amounts, prices and with terms to be determined at the time of future offerings. The registration statement was filed to replace a similar prior filing upon expiration of its three-year term and also allows for the issuance of common stock by Duke Energy.
Duke Energy has an effective Form S-3 with the SEC to sell up to $3 billion of variable denomination floating-rate demand notes, called PremierNotes. The Form S-3 states that no more than $1.5 billion of the notes will be outstanding at any particular time. The notes are offered on a continuous basis and bear interest at a floating rate per annum determined by the Duke Energy PremierNotes Committee, or its designee, on a weekly basis. The interest rate payable on notes held by an investor may vary based on the principal amount of the investment. The notes have no stated maturity date, are non-transferable and may be redeemed in whole or in part by Duke Energy or at the investor’s option at any time. The balance as of December 31, 2016 and 2015 and 2014 was $1,121$1,090 million and $968$1,121 million, respectively. The notes are short-term debt obligations of Duke Energy and are reflected as Notes payable and commercial paper on Duke Energy’s Consolidated Balance Sheets.
At December 31, 2015In January 2017, Duke Energy amended its Form S-3 to add Piedmont as a registrant and 2014, $767 million ofincluded in the amendment a prospectus for Piedmont under which it may issue debt securities in the same manner as other Duke Energy Registrants.
Duke Energy guaranteed debt issued by Duke Energy Carolinas was guaranteed by Duke Energy.

160


of $762 million and $767 million, respectively, as of December 31, 2016 and 2015.
PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

Money Pool
The Subsidiary Registrants, excluding Progress Energy, are eligible to receive support for their short-term borrowing needs through participation with Duke Energy and certain of its subsidiaries in a money pool arrangement. Under this arrangement, those companies with short-term funds may provide short-term loans to affiliates participating in this arrangement. The money pool is structured such that the Subsidiary Registrants, excluding Progress Energy, separately manage their cash needs and working capital requirements. Accordingly, there is no net settlement of receivables and payables between money pool participants. Duke Energy (Parent), may loan funds to its participating subsidiaries, but may not borrow funds through the money pool. Accordingly, as the money pool activity is between Duke Energy and its wholly owned subsidiaries, all money pool balances are eliminated within Duke Energy’s Consolidated Balance Sheets.
Money pool receivable balances are reflected within Notes receivable from affiliated companies on the Subsidiary Registrants’ Consolidated Balance Sheets. Money pool payable balances are reflected within either Notes payable to affiliated companies or Long-Term Debt Payable to Affiliated Companies on the Subsidiary Registrants’ Consolidated Balance Sheets.
Restrictive Debt Covenants
The Duke Energy Registrants’ debt and credit agreements contain various financial and other covenants. TheDuke Energy's Master Credit Facility contains a covenant requiring the debt-to-total capitalization ratio not to exceed 65 percent for each borrower. Piedmont's credit facility contains a debt-to-total capitalization ratio covenant not to exceed 70 percent. Failure to meet those covenants beyond applicable grace periods could result in accelerated due dates and/or termination of the agreements. As of December 31, 2015,2016, each of the Duke Energy Registrants were in compliance with all covenants related to their debt agreements. In addition, some credit agreements may allow for acceleration of payments or termination of the agreements due to nonpayment, or acceleration of other significant indebtedness of the borrower or some of its subsidiaries. None of the debt or credit agreements contain material adverse change clauses.
Other Loans
As of December 31, 20152016 and 2014,2015, Duke Energy had loans outstanding of $629$661 million, including $41$39 million at Duke Energy Progress and $603$629 million, including $44$41 million at Duke Energy Progress, respectively, against the cash surrender value of life insurance policies it owns on the lives of its executives. The amounts outstanding were carried as a reduction of the related cash surrender value that is included in Other within Investments and Other Assets on the Consolidated Balance Sheets.
7. GUARANTEES AND INDEMNIFICATIONS
Duke Energy and Progress Energy have various financial and performance guarantees and indemnifications, which are issued in the normal course of business. As discussed below, these contracts include performance guarantees, stand-by letters of credit, debt guarantees, surety bonds and indemnifications. Duke Energy and Progress Energy enter into these arrangements to facilitate commercial transactions with third parties by enhancing the value of the transaction to the third party. At December 31, 2015,2016, Duke Energy and Progress Energy do not believe conditions are likely for significant performance under these guarantees. To the extent liabilities are incurred as a result of the activities covered by the guarantees, such liabilities are included on the accompanying Consolidated Balance Sheets.

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PART II
DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

On January 2, 2007, Duke Energy completed the spin-off of its natural gas businesses to shareholders. Guarantees issued by Duke Energy or its affiliates, or assigned to Duke Energy prior to the spin-off, remained with Duke Energy subsequent to the spin-off. Guarantees issued by Spectra Energy Capital, LLC, formerly known as Duke Capital, LLC (Spectra Capital) or its affiliates prior to the spin-off remained with Spectra Capital subsequent to the spin-off, except for guarantees that were later assigned to Duke Energy. Duke Energy has indemnified Spectra Capital against any losses incurred under certain of the guarantee obligations that remain with Spectra Capital. At December 31, 2015,2016, the maximum potential amount of future payments associated with these guarantees was $205 million, the majority of which expires by 2028.
Duke Energy has issued performance guarantees to customers and other third parties that guarantee the payment and performance of other parties, including certain non-wholly owned entities, as well as guarantees of debt of certain non-consolidated entities and less than wholly owned consolidated entities. If such entities were to default on payments or performance, Duke Energy would be required under the guarantees to make payments on the obligations of the less than wholly owned entity. The maximum potential amount of future payments required under these guarantees as of December 31, 2015,2016, was $253$333 million. Of this amount, $15$11 million relates to guarantees issued on behalf of less than wholly owned consolidated entities, with the remainder related to guarantees issued on behalf of third parties and unconsolidated affiliates of Duke Energy. Of the guarantees noted above, $112$215 million of the guarantees expire between 20162017 and 2033, with the remaining performance guarantees having no contractual expiration.
Duke Energy has guaranteed certain issuers of surety bonds, obligating itself to make payment upon the failure of a wholly owned and former non-wholly owned entity to honor its obligations to a third party. Under these arrangements, Duke Energy has payment obligations that are triggered by a draw by the third party or customer due to the failure of the wholly owned or former non-wholly owned entity to perform according to the terms of its underlying contract. At December 31, 2015,2016, Duke Energy had guaranteed $47$44 million of outstanding surety bonds, most of which have no set expiration.
Duke Energy uses bank-issued stand-by letters of credit to secure the performance of wholly owned and non-wholly owned entities to a third party or customer. Under these arrangements, Duke Energy has payment obligations to the issuing bank which are triggered by a draw by the third party or customer due to the failure of the wholly owned or non-wholly owned entity to perform according to the terms of its underlying contract. At December 31, 2015,2016, Duke Energy had issued a total of $427$485 million in letters of credit, which expire between 20162017 and 2020. The unused amount under these letters of credit was $58$77 million.
Duke Energy and Progress Energy have issued indemnifications for certain asset performance, legal, tax and environmental matters to third parties, including indemnifications made in connection with sales of businesses. At December 31, 2015,2016, the estimated maximum exposure for these indemnifications was $97$96 million, the majority of which expires in 2017. Of this amount, $7 million has no contractual expiration. For certain matters for which Progress Energy receives timely notice, indemnity obligations may extend beyond the notice period. Certain indemnifications related to discontinued operations have no limitations as to time or maximum potential future payments.

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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

The following table includes the liabilities recognized for the guarantees discussed above. These amounts are primarily recorded in Other within Deferred Credits and other Liabilities on the Consolidated Balance Sheets. As current estimates change, additional losses related to guarantees and indemnifications to third parties, which could be material, may be recorded by the Duke Energy Registrants in the future.
December 31,December 31,
2015 2014
(in millions)2016 2015
Duke Energy$21
 $28
$13
 $21
Progress Energy7
 13

 7
Duke Energy Florida7
 7

 7

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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

8. JOINT OWNERSHIP OF GENERATING AND TRANSMISSION FACILITIES
The Duke Energy Registrants maintain ownership interests in certain jointly owned generating and transmission facilities. The Duke Energy Registrants are entitled to a share of the generating capacity and output of each unit equal to their respective ownership interests, except as otherwise noted below.interests. The Duke Energy Registrants pay their ownership share of additional construction costs, fuel inventory purchases and operating expenses, except in certain instances where agreements have been executed to limit certain joint owners’ maximum exposure to the additional costs.expenses. The Duke Energy Registrants share of revenues and operating costs of the jointly owned facilities is included within the corresponding line in the Consolidated Statements of Operations. Each participant in the jointly owned facilities must provide its own financing, except in certain instances where agreements have been executed to limit certain joint owners’ maximum exposure to the additional costs. financing.
The following table presents the Duke Energy Registrants' interest of jointly owned plant or facilities and amounts included on the Consolidated Balance Sheets. All facilities are operated by the Duke Energy Registrants and are included in the RegulatedElectric Utilities segment unless otherwise noted.and Infrastructure segment.
 December 31, 2015
       Construction
 Ownership
 Property, Plant
 Accumulated
 Work in
 Interest
 and Equipment
 Depreciation
 Progress
Duke Energy Carolinas 
      
Catawba Nuclear Station (units 1 and 2)(a)
19.25% $926
 $567
 $9
Duke Energy Florida   
  
  
Intercession City Plant (unit 11)(b)
 24
 15
 
Duke Energy Ohio   
  
  
Transmission facilities(c)
Various
 85
 50
 1
Duke Energy Indiana 
  
  
  
Gibson Station (unit 5)(d)
50.05% 329
 151
 5
Vermillion(e)
62.5% 153
 108
 
Transmission and local facilities(d)
Various
 4,094
 1,688
 
International Energy 
  
  
  
Brazil – Canoas I and II(f)
47.2% 160
 57
 
 December 31, 2016
       Construction
 Ownership
 Property, Plant
 Accumulated
 Work in
(in millions except for ownership interest)Interest
 and Equipment
 Depreciation
 Progress
Duke Energy Carolinas 
      
Catawba Nuclear Station (units 1 and 2)(a)
19.25% $954
 $612
 $12
Duke Energy Ohio   
  
  
Transmission facilities(b)
Various
 90
 60
 1
Duke Energy Indiana 
  
  
  
Gibson Station (unit 5)(c)
50.05% 333
 157
 11
Vermillion Generating Station(d)
62.5% 154
 111
 
Transmission and local facilities(c)
Various
 4,315
 1,715
 
(a)Jointly owned with North Carolina Municipal Power Agency Number One,1, NCEMC and Piedmont Municipal Power Agency.
(b)Jointly owned with Georgia Power Company (GPC). GPC has exclusive rights to the output of the unit during the months of June through September and pays all fuel and water costs during this period. Duke Energy Florida pays all fuel and water costs during the remaining months. Other costs are allocated 66.67 percent to Duke Energy Florida and the remainder to GPC.
(c)Jointly owned with America Electric Power Generation Resources and The Dayton Power and Light Company.
(d)(c)Jointly owned with Wabash Valley Power Association, Inc. (WVPA) and Indiana Municipal Power Agency.
(e)(d)Jointly owned with WVPA.
(f)Jointly owned with Companhia Brasileira de Aluminio and included in the International segment.
On JulyAugust 31, 2015,2016, Duke Energy ProgressFlorida completed the purchase of NCEMPA'sGeorgia Power Company's (GPC) ownership interestsinterest in jointly owned facilities. See Note 2Intercession City Station Unit 11 for additional information.an amount equal to GPC's net book value of the facility as of the transaction close date. Following the purchase, Duke Energy Florida controls the entire output of the facility.
At December 31, 2016, Duke Energy Florida owns 98.3100 percent interest inof the retired Crystal River Unit 3 nuclear plant and is in3. Duke Energy Florida completed the processpurchase of obtaining the remaining 1.7 percent ownership interest from Seminole Electric Cooperative.Cooperative, Inc. on November 30, 2016. On October 30, 2015, Duke Energy Florida completed the purchase of 6.52 percent ownership interest in Crystal River Unit 3 from the Florida Municipal Joint Owners (FMJO) and settled other disputes for $55 million. All costs associated with Crystal River Unit 3 are included within Regulatory assets on the Consolidated Balance Sheets of Duke Energy, Progress Energy and Duke Energy Florida. See Note 4 for additional information.

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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

9. ASSET RETIREMENT OBLIGATIONS
Duke Energy records an asset retirement obligation (ARO)ARO when it has a legal obligation to incur retirement costs associated with the retirement of a long-lived asset and the obligation can be reasonably estimated. Certain assets of the Duke Energy Registrants’ have an indeterminate life, such as transmission and distribution facilities, and thus the fair value of the retirement obligation is not reasonably estimable. A liability for these asset retirement obligationsAROs will be recorded when a fair value is determinable.
The Duke Energy Registrants’ regulated operations accrue costs of removal for property that does not have an associated legal retirement obligation based on regulatory orders from state commissions. These costs of removal are recorded as a regulatory liability in accordance with regulatory accounting treatment. The Duke Energy Registrants do not accrue the estimated cost of removal for any nonregulated assets. See Note 4 for the estimated cost of removal for assets without an associated legal retirement obligation, which are included in Regulatory liabilities on the Consolidated Balance Sheets.

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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

The following table presents the AROs recorded on the Consolidated Balance Sheets.
December 31, 2015December 31, 2016
  Duke
   Duke
 Duke
 Duke
 Duke
  Duke
   Duke
 Duke
 Duke
 Duke
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Decommissioning of Nuclear Power Facilities(a)$5,072
 $1,730
 $3,093
 $2,349
 $744
 $
 $
$5,204
 $1,834
 $3,172
 $2,454
 $717
 $
 $
Closure of Ash Impoundments4,958
 2,161
 2,196
 2,188
 7
 94
 507
5,150
 2,032
 2,228
 2,209
 19
 43
 847
Other(a)(b)
234
 27
 80
 30
 51
 31
 18
257
 29
 75
 34
 42
 34
 19
Total Asset retirement obligation$10,264
 $3,918
 $5,369
 $4,567
 $802
 $125
 $525
Total asset retirement obligation$10,611
 $3,895
 $5,475
 $4,697
 $778
 $77
 $866
Less: current portion411
 222
 189
 189
 
 
 
Total noncurrent asset retirement obligation$10,200
 $3,673
 $5,286
 $4,508
 $778
 $77
 $866
(a)IncludesThe Duke Energy amount includes purchase accounting adjustments related to the merger with Progress Energy.
(b)Primarily includes obligations related to asbestos removal and the closure of certain landfills at fossil generation facilities. Duke Energy Ohio also includes AROs related to the retirement of natural gas mains.mains and services. Duke Energy also includes AROs related to the removal of renewable energy generation assets.assets and Piedmont's underground natural gas mains and services.
North Carolina Ash Basins
AROs recorded on the Duke Energy Carolinas and South CarolinaDuke Energy Progress Consolidated Balance Sheets include the legal obligation for closure of coal ash basins and the disposal of related ash as a result of the Coal Ash ImpoundmentsAct, the EPA CCR rule and other agreements.
On September 20,In 2014 the Coal Ash Act became law and was amended on June 24, 2015, by the Mountain Energy Act.and July 14, 2016. The Coal Ash Act, as amended, (i) establishes a Coal Ash Management Commission (Coal Ash Commission) to oversee handling of coal ash within the state; (ii) prohibits
Prohibits construction of new and expansion of existing ash impoundments and use of existing impoundments at retired facilities; (iii) requires closure of ash impoundments at Duke Energy Progress' Asheville and Sutton plants and Duke Energy Carolinas' Riverbend and Dan River stations no later than August 1, 2019 (the Mountain Energy Act provides for the potential extension of closure of the Asheville impoundment until 2022); (iv) requires dry disposal of fly ash at active plants, excluding the Asheville Plant, not retired by December 31, 2018; (v) requires dry disposal of bottom ash at active plants, excluding the Asheville Plant, by December 31, 2019, or retirement of active plants; (vi) requires all remaining
Requires ash impoundments in North Carolina to be categorized as high-risk, intermediate-riskhigh risk, intermediate risk or low-risk no later than December 31, 2015,low risk by the NCDEQ with the method of closure and timing to be based upon the assigned risk, with closure no later than December 31, 2029; (vii) establishes2029 (see below for category descriptions);
Classifies Duke Energy Progress' Asheville and Sutton plants and Duke Energy Carolinas' Riverbend and Dan River stations as high risk;
Requires dry disposal of fly ash at active plants, excluding the Asheville Plant, not retired by December 31, 2018;
Requires dry disposal of bottom ash at active plants, excluding the Asheville Plant, by December 31, 2019, or retirement of active plants;
Establishes requirements to deal with groundwater and surface water impacts from impoundments; and (viii) increases
Increases the level of regulation for structural fills utilizing coal ash.
High risk basins (Asheville, Sutton, Riverbend and Dan River) require closure through excavation, including a combination of transferring the ash to an appropriate engineered landfill or conversion of the ash for beneficial use. Closure of high risk basins is required to be completed no later than August 1, 2019, except for Asheville which is required to be completed no later than August 1, 2022.
Intermediate risk basins require closure through excavation including a combination of converting the basin to a lined industrial landfill, transferring of the ash to an appropriate engineered landfill or conversion of the ash for beneficial use. Closure of intermediate risk basins is required to be completed no later than December 31, 2024, except for H.F. Lee, Cape Fear and Weatherspoon to be completed no later than August 1, 2028.
Low risk basins require closure through either the combination of the installation and maintenance of a cap system and groundwater monitoring system designed to minimize infiltration and erosion or other closure options available to intermediate risk basins. Closure of low risk basins is required to be completed no later than December 31, 2029.
In January 2016, the NCDEQ published its draft risk classifications.classifications for sites not specifically delineated by the Coal Ash Act as high risk. These risk rankings were generally determined based on three primary criteria: structural integrity of the impoundments and impactimpacts to both surface water and groundwaters. NCDEQto groundwater. The NCDEQ's draft proposed classifications categorized 12 basins at four sites as intermediate risk and four basins at three plantssites as low risk. NCDEQThe NCDEQ's draft proposed classifications also categorized nine basins at six plantssites as “low-to-intermediate” risk, thereby not assigning a proposeddefinitive risk ranking at thisthat time. On May 18, 2016, the NCDEQ issued new proposed risk classifications, proposing to rank all originally proposed low risk and "low-to-intermediate" risk sites as intermediate.
On July 14, 2016, the former governor of North Carolina signed legislation which amended the Coal Ash Act and required Duke Energy to undertake dam improvement projects and to provide access to a permanent alternative drinking water source to certain residents within a half mile of coal ash basin compliance boundaries and to certain other potentially impacted residents. The new legislation also ranks basins at the H.F. Lee, Cape Fear and Weatherspoon stations as intermediate risk rankingsconsistent with Duke Energy's previously announced plans to excavate those basins. These specific intermediate basins require closure through excavation including a combination of transferring ash to an appropriate engineered landfill or conversion of the ash for beneficial use. Closure of these sites willspecific intermediate basins is required to be based upon receipt of additional data primarily related to groundwater quality and thecompleted no later than August 1, 2028. Upon satisfactory completion of specific modificationsthe dam improvement projects and repairsinstallation of alternative drinking water sources by October 15, 2018, the legislation requires the NCDEQ to reclassify sites proposed as intermediate risk, excluding H.F. Lee, Cape Fear and Weatherspoon, as low risk. In January 2017, NCDEQ issued preliminary approval of Duke Energy's plans for the alternative water sources.
Per the Coal Ash Act, final proposed classifications were to be subject to Coal Ash Management Commission (Coal Ash Commission) approval. In March 2016, the Coal Ash Commission created by the Coal Ash Act was disbanded by the former governor of North Carolina based on a North Carolina Supreme Court ruling regarding the constitutionality of the body. The July 2016 legislation eliminates the Coal Ash Commission and transfers responsibility for ash basin closure oversight to the impoundments. NCDEQ isNCDEQ.

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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Additionally, the July 2016 legislation requires the installation and operation of three large-scale coal ash beneficiation projects which are expected to finalize its risk classifications as partproduce reprocessed ash for use in the concrete industry. Closure of a public comment process.basins at sites with these beneficiation projects are required to be completed no later than December 31, 2029. On October 5, 2016, Duke Energy cannot predictannounced Buck Steam Station as a first location for one of the final classification.beneficiation projects. On December 13, 2016, Duke Energy announced H.F. Lee as the second location. Duke Energy intends to announce the third location by July 1, 2017.
The Coal Ash Act includes a variance procedure for compliance deadlines and modificationother issues surrounding the management of requirements regarding structural fillsCCR and compliance boundaries.CCR surface impoundments. Provisions of the Coal Ash Act prohibit cost recovery in customer rates for unlawful discharge of ash impoundment waters occurring after January 1, 2014. The Coal Ash Act leaves the decision on cost recovery determinations related to closure of ash impoundments to the normal ratemaking processes before utility regulatory commissions. Consistent with the requirements of the Coal Ash Act, Duke Energy has submitted CSAs and groundwater corrective action plans to NCDEQ and will periodically submit to NCDEQ site-specific coal ash impoundment closure plans or excavation plans in advance of closure. These plans and all associated permits must be approved by NCDEQ before any excavation or closure work can begin.
Federal Coal Combustion Residuals Regulation
In April 2015, the EPA published a rule to regulate the disposal of CCR from electric utilities as solid waste. The federal regulation classifies CCR as nonhazardous waste and allows for beneficial use of CCR with some restrictions. The regulation applies to all new and existing landfills, new and existing surface impoundments receiving CCR and existing surface impoundments that are no longer receiving CCR but contain liquid located at stations currently generating electricity (regardless of fuel source). The rule establishes requirements regarding landfill design, structural integrity design and assessment criteria for surface impoundments, groundwater monitoring and protection procedures and other operational and reporting procedures to ensure the safe disposal and management of CCR. As a result of the EPA rule, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Ohio and Duke Energy Indiana recorded additional ARO amounts during 2015.
In addition to the requirements of the federal CCR regulation, CCR landfills and surface impoundments will continue to be independently regulated by most states.
In September 2014, Duke Energy Carolinas executed a consent agreement with the South Carolina Department of Health and Environmental Control (SCDHEC) requiring the excavation of an inactive ash basin and ash fill area at the W.S. Lee Steam Station. As part of this agreement, in December 2014, Duke Energy Carolinas filed an ash removal plan and schedule with SCDHEC. In April 2015, the federal Coal Combustion Residuals (CCR)CCR rules were published and Duke Energy Carolinas subsequently executed an agreement with the conservation groups Upstate Forever and Save Our Saluda that requires Duke Energy Carolinas to remediate all active and inactive ash storage areas at the W.S. Lee Steam Station. Coal-fired generation at W.S. Lee ceased in 2014 and unit 3 was converted to natural gas in March 2015. In July 2015, Duke Energy Progress executed a consent agreement with the SCDHEC requiring the excavation of an inactive ash fill area at the Robinson Plant within eight years. Coal ash impoundments at the Robinson Plant and W.S. Lee Station sites are required to be closed pursuant to the recently issued CCR rule and the provisions of these consent agreements are consistent with the federal CCR closure requirements.

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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

Coal Combustion Residuals
On April 17, 2015, the EPA published in the Federal Register a rule to regulate the disposal of CCR from electric utilities as solid waste. The federal regulation, which became effective in October 2015, classifies CCR as nonhazardous waste under Subtitle D of the Resource Conservation and Recovery Act and allows for beneficial use of CCR with some restrictions. The regulation applies to all new and existing landfills, new and existing surface impoundments receiving CCR and existing surface impoundments that are no longer receiving CCR but contain liquid located at stations currently generating electricity (regardless of fuel source). The rule establishes requirements regarding landfill design, structural integrity design and assessment criteria for surface impoundments, groundwater monitoring and protection procedures and other operational and reporting procedures to ensure the safe disposal and management of CCR. In addition to the requirements of the federal CCR regulation, CCR landfills and surface impoundments will continue to be independently regulated by most states. As a result of the EPA rule, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Ohio and Duke Energy Indiana recorded additional asset retirement obligation amounts during 2015.
Coal Ash Liability
The ARO amount recorded on the Consolidated Balance Sheets is based upon estimated closure costs for impacted ash impoundments. The amount recorded represents the discounted cash flows for estimated closure costs based upon either specific closure plans or the probability weightings of the potential closure methods as evaluated on a site-by-site basis. Actual costs to be incurred will be dependent upon factors that vary from site to site. The most significant factors are the method and time frame of closure at the individual sites. Closure methods considered include removing the water from the basins, consolidating material as necessary and capping the ash with a synthetic barrier, excavating and relocating the ash to a lined structural fill or lined landfill, or recycling the ash for concrete or some other beneficial use. The ultimate method and timetable for closure will be in compliance with standards set by federal and state regulations. The ARO amount will be adjusted as additional information is gained through the closure and post-closure process, including acceptance and approval of compliance approaches which may change management assumptions, and may result in a material change to the balance. See ARO Liability Rollforward section below for information about revisions made to the coal ash liability during 2016.
Asset retirement costs associated with the asset retirement obligationsAROs for operating plants and retired plants are included in Net property, plant and equipment and Regulatory assets, respectively, on the Consolidated Balance Sheets. See Note 4 for additional information on Regulatory assets related to AROs.
Cost recovery for future expenditures will be pursued through the normal ratemaking process with federal and state utility commissions, which permit recovery of necessary and prudently incurred costs associated with Duke Energy’s regulated operations.
Nuclear Decommissioning Liability
Asset retirement obligationsAROs related to nuclear decommissioning are based on site-specific cost studies. The NCUC, PSCSC and FPSC require updated cost estimates for decommissioning nuclear plants every five years.

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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

The following table summarizes information about the most recent site-specific nuclear decommissioning cost studies. Decommissioning costs in the table below are presented in dollars of the year of the cost study and include costs to decommission plant components not subject to radioactive contamination.
Annual Funding
 Decommissioning
 Annual Funding
 Decommissioning
 
(in millions)
Requirement(a)

 
Costs(a)(b)

 Year of Cost Study
Requirement(a)

 
Costs(a)(b)

 Year of Cost Study
Duke Energy$14
 $8,130
 2013 and 2014$14
 $8,150
 2013 and 2014
Duke Energy Carolinas
 3,420
 2013
 3,420
 2013
Duke Energy Progress14
 3,550
 201414
 3,550
 2014
Duke Energy Florida
 1,160
 2013
 1,180
 2013
(a)Amounts for Progress Energy equal the sum of Duke Energy Progress and Duke Energy Florida.
(b)Amounts include the Subsidiary Registrant's ownership interest in jointly owned reactors. Other joint owners are responsible for decommissioning costs related to their interest in the reactors.
Duke Energy Progress’ site-specific nuclear decommissioning cost studies were filed with the NCUC and PSCSC in 2015. New funding studies were completed and filed with the NCUC and PSCSC in 2015 as well. Accordingly, in January 2016 Duke Energy Progress received approval from the PSCSC to reduce the annual funding requirement. The NCUC will decide on the appropriate funding level in 2016. Duke Energy Progress will complete and file new funding studies with the FERC in 2016.
Nuclear Decommissioning Trust Funds (NDTF)
Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida each maintain Nuclear Decommissioning Trust Funds (NDTF)NDTFs that are intended to pay for the decommissioning costs of the respective nuclear power plants. The NDTF investments are managed and invested in accordance with applicable requirements of various regulatory bodies including the NRC, FERC, NCUC, PSCSC, FPSC and the Internal Revenue Service. Service (IRS).
Use of the NTDFNDTF investments is restricted to nuclear decommissioning activities including license termination, spent fuel and site restoration. The license termination and spent fuel obligations relate to contaminated decommissioning and are recorded as ARO’s.AROs. The site restoration obligation relates to non-contaminated decommissioning and is recorded to cost of removal within Regulatory liabilities on the Consolidated Balance Sheets.

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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

The following table presents the fair value of NDTF assets legally restricted for purposes of settling asset retirement obligationsAROs associated with nuclear decommissioning.
 December 31,
(in millions)2015 2014
Duke Energy$4,670
 $5,182
Duke Energy Carolinas2,686
 2,678
Duke Energy Progress(a)
1,984
 1,701
Duke Energy Florida(a)(b)

 803
(a)    Amounts Duke Energy Florida is actively decommissioning Crystal River Unit 3 and was granted an exemption from the NRC which allows for Progress Energy equaluse of the sumNDTF for all aspects of nuclear decommissioning. Therefore, the entire balance of Duke Energy ProgressFlorida's NDTF may be applied toward license termination, spent fuel and site restoration costs incurred to decommission Crystal River Unit 3.
 December 31,
(in millions)2016 2015
Duke Energy$5,099
 $4,670
Duke Energy Carolinas2,882
 2,686
Duke Energy Progress2,217
 1,984
See Note 16 for additional information related to the fair value of the Duke Energy Florida.Registrants' NDTFs.
(b)Duke Energy Florida is actively decommissioning Crystal River Unit 3 and was granted an exemption from the NRC which allows for unrestricted use of the NDTF. Therefore, the entire balance of Duke Energy Florida’s NDTF may be applied towards license termination, spent fuel and site restoration costs incurred to decommission Crystal River Unit 3.
Nuclear Operating Licenses
Operating licenses for nuclear units are potentially subject to extension. The following table includes the current expiration of nuclear operating licenses. Duke Energy Florida has requested the NRC terminate the operating license for Crystal River Unit 3 as it permanently ceased operation in February 2013. Refer to Note 4 for further information on decommissioning activity and transition to SAFSTOR.
UnitYear of Expiration
Duke Energy Carolinas 
Catawba Units 1 and 22043
McGuire Unit 12041
McGuire Unit 22043
Oconee Units 1 and 22033
Oconee Unit 32034
Duke Energy Progress 
Brunswick Unit 12036
Brunswick Unit 22034
Harris2046
Robinson2030

165Duke Energy Florida has requested the NRC terminate the operating license for Crystal River Unit 3 as it permanently ceased operation in February 2013. Refer to Note 4 for further information on the Crystal River Unit 3 decommissioning activity and transition to SAFSTOR.


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

ARO Liability Rollforward
During 2016, the Duke Energy Registrants updated coal ash ARO liability estimates based on additional site-specific information about the related costs, methods and timing of work to be performed. Actual closure costs incurred could be materially different from current estimates that form the basis of the recorded AROs.

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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

The following table presents changes in the liability associated with AROs.
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Balance at December 31, 20134,958
 1,594
 2,570
 1,737
 833
 28
 30
Acquisitions4
 
 
 
 
 
 
Accretion expense(a)
246
 113
 135
 97
 38
 2
 2
Liabilities settled(b)  
(68) 
 (68) 
 (68) 
 
Liabilities incurred in the current year(c)
3,500
 1,717
 1,783
 1,783
 
 
 
Revisions in estimates of cash flows(d)
(174) 4
 291
 288
 3
 (3) 
Balance at December 31, 20148,466
 3,428
 4,711
 3,905
 806
 27
 32
Acquisitions(e)
226
 
 226
 204
 23
 
 
Accretion expense(a)
384
 165
 203
 169
 34
 4
 15
Liabilities settled(b)  
(422) (200) (195) (125) (70) (4) (23)
Liabilities incurred in the current year(c)
1,016
 178
 282
 282
 
 116
 418
Revisions in estimates of cash flows(f)
594
 347
 142
 132
 9
 (18) 83
Balance at December 31, 2015$10,264

$3,918

$5,369

$4,567

$802

$125

$525
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Balance at December 31, 2014$8,464
 $3,428
 $4,711
 $3,905
 $806
 $27
 $32
Acquisitions(a)
226
 
 226
 204
 23
 
 
Accretion expense(b)
380
 165
 203
 169
 34
 4
 15
Liabilities settled(c)  
(422) (200) (195) (125) (70) (4) (23)
Liabilities incurred in the current year(d)
1,016
 178
 282
 282
 
 116
 418
Revisions in estimates of cash flows585
 347
 142
 132
 9
 (18) 83
Balance at December 31, 201510,249
 3,918
 5,369
 4,567
 802
 125
 525
Acquisitions22
 
 2
 
 2
 
 
Accretion expense(b)
400
 187
 230
 194
 35
 5
 24
Liabilities settled(c)  
(613) (287) (272) (212) (60) (5) (49)
Liabilities incurred in the current year51
 
 3
 3
 
 
 29
Revisions in estimates of cash flows502
 77
 143
 145
 (1) (48) 337
Balance at December 31, 2016$10,611

$3,895

$5,475

$4,697

$778

$77

$866
(a)Duke Energy Progress amount relates to the NCEMPA acquisition. See Note 2 for additional information.
(b)Substantially all accretion expense for the years ended December 31, 20152016 and 20142015 relates to Duke Energy’s regulated electric operations and has been deferred in accordance with regulatory accounting treatment.
(b)(c)For 2014, amounts relate to nuclear decommissioning of Crystal River Unit 3. For 2015, amountsAmounts primarily relate to ash impoundment closures and nuclear decommissioning of Crystal River Unit 3.
(c)(d)For 2014, amounts primarily relate to AROs recorded as a result of the Coal Ash Act and an agreement with the SCDHEC related to the W.S. Lee Steam Station. For 2015, amountsAmounts primarily relate to AROs recorded as a result of the EPA's rule for disposal of CCR.
(d)Amounts for Progress Energy and Duke Energy Progress primarily relate to Duke Energy Progress' site-specific nuclear decommissioning cost studies. The Duke Energy amount also includes the impact of Duke Energy Progress' site-specific nuclear decommissioning cost studies on purchase accounting amounts.
(e)Duke Energy Progress amount relates to the NCEMPA acquisition. See footnote 2 for additional information.
(f)Primarily relates to the closure of ash impoundments.

166


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

10. PROPERTY, PLANT AND EQUIPMENT
The following tables summarize the property, plant and equipment for Duke Energy and its subsidiary registrants.
December 31, 2015December 31, 2016
Estimated              Estimated              
Useful   Duke
   Duke
 Duke
 Duke
 Duke
Useful   Duke
   Duke
 Duke
 Duke
 Duke
Life Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
Life Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)(Years) Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
(Years) Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Land  $1,466
 $407
 $719
 $392
 $327
 $118
 $108
 $1,501
 $432
 $735
 $393
 $342
 $150
 $106
Plant – Regulated    
   
   
   
   
   
   
              
Electric generation, distribution and transmission 8 - 100 87,593
 33,623
 36,422
 22,888
 13,534
 4,429
 13,118
8 - 100 89,864
 34,515
 37,596
 23,683
 13,913
 4,593
 13,160
Natural gas transmission and distribution 12 - 67 2,322
 
 
 
 
 2,322
 
12 - 67 7,738
 
 
 
 
 2,456
 
Other buildings and improvements 15 - 100 1,480
 477
 621
 294
 322
 204
 179
15 - 100 1,692
 502
 634
 293
 341
 211
 197
Plant – Nonregulated      
   
   
   
   
   
   
               
Electric generation, distribution and transmission 1 - 30 3,348
 
 
 
 
 
 
5 - 30 4,298
 
 
 
 
 
 
Other buildings and improvements 5 - 50 2,363
 
 
 
 
 
 
25 - 35 421
 
 
 
 
 
 
Nuclear fuel    3,194
 1,827
 1,367
 1,367
 
 
 
  3,572
 2,092
 1,480
 1,480
 
 
 
Equipment 3 - 38 1,791
 368
 530
 398
 132
 344
 173
3 - 38 1,941
 358
 505
 378
 127
 338
 156
Construction in process    4,525
 1,860
 1,827
 1,118
 709
 180
 214
  6,186
 2,324
 2,708
 1,329
 1,379
 206
 396
Other 2 - 60 4,744
 836
 1,180
 856
 319
 153
 215
5 - 40 4,184
 904
 1,206
 863
 332
 172
 226
Total property, plant and equipment(a)(d)
 112,826
 39,398
 42,666
 27,313
 15,343
 7,750
 14,007
 121,397
 41,127
 44,864
 28,419
 16,434
 8,126
 14,241
Total accumulated depreciation – regulated(b)(c)(d)
 (35,367) (13,521) (14,867) (10,141) (4,720) (2,507) (4,484) (37,831) (14,365) (15,212) (10,561) (4,644) (2,579) (4,317)
Total accumulated depreciation – nonregulated(c)(d)
 (2,298) 
 
 
 
 
 
 (1,575) 
 
 
 
 
 
Generation facilities to be retired, net 548
 
 548
 548
 
 
 
 529
 
 529
 529
 
 
 
Total net property, plant and equipment  $75,709

$25,877

$28,347

$17,720

$10,623

$5,243
 $9,523
 $82,520

$26,762

$30,181

$18,387

$11,790

$5,547
 $9,924

176


PART II
DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

(a)Includes capitalized leases of $1,470$1,355 million, $40 million, $288 million, $142 million, $146 million, $81 million and $35 million at Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio and Duke Energy Indiana, respectively, primarily within Plant – Regulated. The Progress Energy, Duke Energy Progress and Duke Energy Florida amounts are net of $99 million, $9 million and $90 million, respectively, of accumulated amortization of capitalized leases.
(b)Includes $1,922 million, $1,192 million, $730 million and $730 million of accumulated amortization of nuclear fuel at Duke Energy, Duke Energy Carolinas, Progress Energy and Duke Energy Progress, respectively.
(c)Includes accumulated amortization of capitalized leases of $50 million, $9 million, $19 million and $8 million at Duke Energy, Duke Energy Carolinas, Duke Energy Ohio and Duke Energy Indiana, respectively.
(d)Includes gross property, plant and equipment cost of consolidated VIEs of $2,591 million and accumulated depreciation of consolidated VIEs of $411 million at Duke Energy.
 December 31, 2015
 Estimated              
 Useful   Duke
   Duke
 Duke
 Duke
 Duke
 Life Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)(Years) Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Land  $1,391
 $407
 $719
 $392
 $327
 $118
 $108
Plant – Regulated               
Electric generation, distribution and transmission8 - 100 87,593
 33,623
 36,422
 22,888
 13,534
 4,429
 13,118
Natural gas transmission and distribution12 - 67 2,322
 
 
 
 
 2,322
 
Other buildings and improvements15 - 100 1,480
 477
 621
 294
 322
 204
 179
Plant – Nonregulated               
Electric generation, distribution and transmission1 - 30 3,348
 
 
 
 
 
 
Other buildings and improvements25 - 35 410
 
 
 
 
 
 
Nuclear fuel  3,194
 1,827
 1,367
 1,367
 
 
 
Equipment3 - 38 1,736
 368
 530
 398
 132
 344
 173
Construction in process  4,485
 1,860
 1,827
 1,118
 709
 180
 214
Other5 - 60 4,008
 836
 1,180
 856
 319
 153
 215
Total property, plant and equipment(a)(d)
  109,967
 39,398
 42,666
 27,313
 15,343
 7,750
 14,007
Total accumulated depreciation – regulated(b)(c)(d)
  (35,367) (13,521) (14,867) (10,141) (4,720) (2,507) (4,484)
Total accumulated depreciation – nonregulated(c)(d)
  (1,369) 
 
 
 
 
 
Generation facilities to be retired, net  548
 
 548
 548
 
 
 
Total net property, plant and equipment  $73,779
 $25,877
 $28,347
 $17,720
 $10,623
 $5,243
 $9,523
(a)Includes capitalized leases of $1,465 million, $40 million, $302 million, $144 million, $158 million, $96 million and $39 million at Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio and Duke Energy Indiana, respectively, primarily within Plant - Regulated.in regulated plant. The Progress Energy, Duke Energy Progress and Duke Energy Florida amounts are net of $85 million, $7 million and $78 million, respectively, of accumulated amortization of capitalized leases.
(b)Includes $1,621 million, $976 million, $645 million and $645 million of accumulated amortization of nuclear fuel at Duke Energy, Duke Energy Carolinas, Progress Energy and Duke Energy Progress, respectively.
(c)Includes accumulated amortization of capitalized leases of $58$57 million, $11 million, $27 million and $7 million at Duke Energy, Duke Energy Carolinas, Duke Energy Ohio and Duke Energy Indiana, respectively.
(d)Includes gross property, plant and equipment cost of consolidated VIEs of $2,033 million and accumulated depreciation of consolidated VIEs of $327 million at Duke Energy.

167177


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

 December 31, 2014
 Estimated              
 Useful   Duke
   Duke
 Duke
 Duke
 Duke
 Life Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)(Years) Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Land    $1,459
 $403
 $704
 $380
 $324
 $114
 $108
Plant – Regulated      
   
   
   
   
   
   
Electric generation, distribution and transmission  2 - 138 82,206
 31,751
 33,672
 20,616
 13,056
 3,956
 11,911
Natural gas transmission and distribution  12 - 67 2,230
 
 
 
 
 2,230
 
Other buildings and improvements  9 - 100 1,445
 465
 607
 286
 318
 200
 173
Plant – Nonregulated       
   
   
   
   
   
   
Electric generation, distribution and transmission  1- 30 2,380
 
 
 
 
 
 
Other buildings and improvements  5 - 50 2,498
 
 
 
 
 
 
Nuclear fuel     2,865
 1,676
 1,190
 1,190
 
 
 
Equipment  3 - 34 1,762
 341
 506
 388
 118
 330
 166
Construction in process     4,519
 2,081
 1,215
 908
 307
 97
 481
Other  5 - 80 3,497
 655
 756
 439
 310
 214
 195
Total property, plant and equipment(a)(d)
  104,861
 37,372
 38,650
 24,207
 14,433
 7,141
 13,034
Total accumulated depreciation – regulated(b)(c)(d)
  (32,628) (12,700) (13,506) (9,021) (4,478) (2,213) (4,219)
Total accumulated depreciation – nonregulated(c)(d)
  (2,196) 
 
 
 
 
 
Generation facilities to be retired, net  9
 
 
 
 
 9
 
Total net property, plant and equipment    $70,046
 $24,672
 $25,144
 $15,186
 $9,955
 $4,937
 $8,815
(a)Includes capitalized leases of $1,548 million, $40 million, $315 million, $146 million, $169 million, $98 million, and $30 million at Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, and Duke Energy Indiana, respectively, primarily in regulated plant. The Progress Energy, Duke Energy Progress and Duke Energy Florida amounts are net of $72 million, $5 million and $67 million, respectively, of accumulated amortization of capitalized leases.
(b)Includes $1,408 million, $847 million, $561 million and $561 million of accumulated amortization of nuclear fuel at Duke Energy, Duke Energy Carolinas, Progress Energy and Duke Energy Progress, respectively.
(c)Includes accumulated amortization of capitalized leases of $52 million, $8 million, $25 million and $6 million at Duke Energy, Duke Energy Carolinas, Duke Energy Ohio and Duke Energy Indiana, respectively.
(d)Includes gross property, plant and equipment cost of consolidated VIEs of $1,873 million and accumulated depreciation of consolidated VIEs of $257 million at Duke Energy.
The following table presents capitalized interest, which includes the debt component of AFUDC.
Years Ended December 31,Years Ended December 31,
(in millions)2015
 2014
 2013
2016
 2015
 2014
Duke Energy$98
 $75
 $89
$100
 $98
 $75
Duke Energy Carolinas38
 38
 41
38
 38
 38
Progress Energy24
 11
 19
31
 24
 11
Duke Energy Progress20
 10
 16
17
 20
 10
Duke Energy Florida4
 1
 3
14
 4
 1
Duke Energy Ohio10
 10
 11
8
 10
 10
Duke Energy Indiana6
 6
 9
7
 6
 6

168


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

Operating Leases
Duke Energy's Commercial PortfolioRenewables segment operates various renewable energy projects and sells the generated output to utilities, electric cooperatives, municipalities and commercial and industrial customers through long-term contracts. In certain situations, these long-term contracts and the associated renewable energy projects qualify as operating leases. Rental income from these leases is accounted for as Operating Revenues in the Consolidated Statements of Operations. There are no minimum lease payments as all payments are contingent based on actual electricity generated by the renewable energy projects. Contingent lease payments were $216 million, $172 million $164 million and $154$164 million for the years ended December 31, 2016, 2015 2014 and 2013.2014. As of December 31, 2015,2016, renewable energy projects owned by Duke Energy and accounted for as operating leases had a cost basis of $2,455$3,127 million and accumulated depreciation of $258$347 million. These assets are principally classified as nonregulated electric generation and transmission assets.
11. GOODWILL AND INTANGIBLE ASSETS
Goodwill
The following table presents goodwill by reportable operating segment for Duke Energy.
Duke Energy
 Regulated
 International
 Commercial
  
(in millions)  Utilities
 Energy
 Portfolio
 Total
Goodwill at December 31, 2014(a)
$15,950
 $307
 $64
 $16,321
Foreign exchange and other changes  
 (36) 
 (36)
Acquisitions
 
 58
 58
Goodwill at December 31, 2015$15,950
 $271
 $122
 $16,343
 Electric Utilities
 Gas Utilities
 Commercial
  
(in millions)and Infrastructure
 and Infrastructure
 Renewables
 Total
Goodwill at December 31, 2015$15,656
 $294
 $122
 $16,072
Piedmont Acquisition(a)
1,723
 1,630
 
 3,353
Goodwill at December 31, 2016$17,379
 $1,924
 $122
 $19,425
(a)Excludes fully impaired Goodwill related to the nonregulated Midwest Generation business which was sold in the second quarter of 2015. See Note 2 for further information related to the sale.
(a)    Refer to Note 2 for more information on the purchase accounting related to the acquisition of Piedmont.
Duke Energy Ohio
Duke Energy Ohio's Goodwill balance of $920 million, allocated $596 million to Electric Utilities and Infrastructure and $324 million to Gas Utilities and Infrastructure, is included in the Regulated Utilities operating segment and presented net of accumulated impairment charges of $216 million on the Consolidated Balance Sheets at December 31, 20152016 and 2014.2015.
Progress Energy
Progress Energy's Goodwill is included in the RegulatedElectric Utilities and Infrastructure operating segment and there are no accumulated impairment charges.
Impairment Testing
Duke Energy, Duke Energy Ohio and Progress Energy perform annual goodwill impairment tests each year as of August 31. Duke Energy, Duke Energy Ohio and Progress Energy update their test between annual tests if events or circumstances occur that would more likely than not reduce the fair value of a reporting unit below its carrying value. As the fair value of Duke Energy, Duke Energy Ohio and Progress Energy’s reporting units exceeded their respective carrying values at the date of the annual impairment analysis, no impairment charges were recorded in 2015.recorded.

169178


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Intangible Assets
The following tables show the carrying amount and accumulated amortization of intangible assets included in Other within Investments and Other Assets on the Consolidated Balance Sheets of the Duke Energy Registrants at December 31, 20152016 and 2014.2015.
December 31, 2015December 31, 2016
  Duke
   Duke
 Duke
 Duke
 Duke
  Duke
   Duke
 Duke
 Duke
 Duke
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions) Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Emission allowances $20
 $1
 $6
 $2
 $4
 $
 $14
$19
 $1
 $6
 $2
 $4
 $
 $13
Renewable energy certificates 116
 30
 80
 80
 
 5
 
125
 36
 84
 84
 
 4
 
Gas, coal and power contracts 24
 
 
 
 
 
 24
24
 
 
 
 
 
 24
Wind development rights 115
 
 
 
 
 
 
Renewable operating and development projects97
 
 
 
 
 
 
Other 68
 
 
 
 
 
 
6
 
 
 
 
 
 
Total gross carrying amounts 343
 31
 86
 82
 4
 5
 38
271
 37
 90
 86
 4
 4
 37
Accumulated amortization – gas, coal and power contracts (16) 
 
 
 
 
 (16)(17) 
 
 
 
 
 (17)
Accumulated amortization – wind development rights (18) 
 
 
 
 
 
Accumulated amortization – renewable operating and development projects(23) 
 
 
 
 
 
Accumulated amortization – other (24) 
 
 
 
 
 
(5) 
 
 
 
 
 
Total accumulated amortization (58) 
 
 
 
 
 (16)(45) 
 
 
 
 
 (17)
Total intangible assets, net $285

$31

$86

$82

$4

$5

$22
$226

$37

$90

$86

$4

$4

$20
December 31, 2014December 31, 2015
  Duke
   Duke
 Duke
 Duke
 Duke
  Duke
   Duke
 Duke
 Duke
 Duke
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions) Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Emission allowances $23
 $1
 $7
 $3
 $4
 $
 $16
$20
 $1
 $6
 $2
 $4
 $
 $14
Renewable energy certificates 97
 25
 69
 69
 
 3
 
116
 30
 80
 80
 
 5
 
Gas, coal and power contracts 24
 
 
 
 
 
 24
24
 
 
 
 
 
 24
Wind development rights 97
 
 
 
 
 
 
Renewable operating and development projects115
 
 
 
 
 
 
Other 76
 
 
 
 
 
 
2
 
 
 
 
 
 
Total gross carrying amounts 317
 26
 76
 72
 4
 3
 40
277
 31
 86
 82
 4
 5
 38
Accumulated amortization – gas, coal and power contracts (15) 
 
 
 
 
 (15)(16) 
 
 
 
 
 (16)
Accumulated amortization – wind development rights (14) 
 
 
 
 
 
Accumulated amortization – renewable operating and development projects(18) 
 
 
 
 
 
Accumulated amortization – other (25) 
 
 
 
 
 
(1) 
 
 
 
 
 
Total accumulated amortization (54) 
 
 
 
 
 (15)(35) 
 
 
 
 
 (16)
Total intangible assets, net $263

$26

$76

$72

$4

$3

$25
$242

$31

$86

$82

$4

$5

$22
Amortization Expense
The following table presents amortization expense for gas, coal and power contracts, wind development rightsrenewable operating projects and other intangible assets.
December 31,December 31,
(in millions)2015
 2014
 2013
2016
 2015
 2014
Duke Energy$4
 $6
 $13
$6
 $5
 $6
Duke Energy Ohio
 2
 8

 
 2
Duke Energy Indiana1
 1
 1
1
 1
 1

170179


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

The table below shows the expected amortization expense for the next five years for intangible assets as of December 31, 2015.2016. The expected amortization expense includes estimates of emission allowances consumption and estimates of consumption of commodities such as gas and coal under existing contracts, as well as estimated amortization related to the wind developmentrenewable operating projects. The amortization amounts discussed below are estimates and actual amounts may differ from these estimates due to such factors as changes in consumption patterns, sales or impairments of emission allowances or other intangible assets, delays in the in-service dates of windrenewable assets, additional intangible acquisitions and other events.
(in millions)2016
 2017
 2018
 2019
 2020
2017
 2018
 2019
 2020
 2021
Duke Energy$8
 $8
 $8
 $7
 $7
$5
 $5
 $5
 $5
 $5
Duke Energy Indiana2
 2
 2
 2
 2
2
 2
 2
 2
 2
12. INVESTMENTS IN UNCONSOLIDATED AFFILIATES
EQUITY METHOD INVESTMENTS
Investments in domestic and international affiliates that are not controlled by Duke Energy, but over which it has significant influence, are accounted for using the equity method. As of December 31, 2015,2016, the carrying amount of investments in affiliates with carrying amounts greater than zero exceeded the underlying investment by $60$24 million. These differences are attributable to intangibles associated with underlying contracts which are reflected in the investments balance and the equity in earnings reported in the table below.
The following table presents Duke Energy’s investments in unconsolidated affiliates accounted for under the equity method, as well as the respective equity in earnings, by segment.
Years Ended December 31,Years Ended December 31,
2015 2014 20132016 2015 2014
  Equity in
   Equity in
 Equity in
  Equity in
   Equity in
 Equity in
(in millions)Investments
 earnings
 Investments
 earnings
 earnings
Investments
 earnings
 Investments
 earnings
 earnings
Regulated Utilities$2
 $(4) $3
 $(3) $(1)
International Energy39
 74
 69
 120
 110
Commercial Portfolio433
 (3) 258
 10
 7
Electric Utilities and Infrastructure$93
 $5
 $57
 $(2) $(1)
Gas Utilities and Infrastructure566
 19
 113
 1
 
Commercial Renewables185
 (82) 265
 (6) 8
Other25
 2
 28
 3
 6
81
 43
 64
 76
 123
Total$499
 $69
 $358
 $130
 $122
$925

$(15)
$499

$69

$130
During the years ended December 31, 2016, 2015 2014 and 2013,2014, Duke Energy received distributions from equity investments of $31 million, $104 million $154 million and $144$154 million, respectively, which are included in Other assets within Cash Flows from Operating Activities on the Consolidated Statements of Cash Flows.
Significant investments in affiliates accounted for under the equity method are discussed below.
InternationalElectric Utilities and Infrastructure
Duke Energy owns a 50 percent interest in Duke-American Transmission Co. (DATC) and in Pioneer Transmission, LLC (Pioneer), which build, own and operate electric transmission facilities in North America.
Gas Utilities and Infrastructure
The table below outlines Duke Energy's ownership interests in natural gas pipeline companies and natural gas storage facilities. See Notes 4 and 17 for more information.
   Investment Amount (in millions)
 Ownership December 31, December 31,
Entity NameInterest 2016 2015
Pipeline Investments     
Atlantic Coast Pipeline, LLC47% $265
 $52
Sabal Trail Transmission, LLC7.5% 140
 61
Constitution Pipeline, LLC24% 82
 
Cardinal Pipeline Company, LLC21.49% 16
 
Storage Facilities     
Pine Needle LNG Company, LLC45% 16
 
Hardy Storage Company, LLC50% 47
 
Total Investments  $566
 $113
For regulatory matters and other information on the ACP, Sabal Trail and Constitution investments, see Notes 4 and 17.

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DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Commercial Renewables
In 2016, Duke Energy sold its interest in three of the Catamount Sweetwater, LLC wind farm projects. Duke Energy has a 47 percent ownership interest in each of the two other Catamount Sweetwater, LLC wind farm projects and 50 percent interest in DS Cornerstone, LLC, which owns wind farm projects in the U.S.
Impairment of Equity Method Investments
During the year ended December 31, 2016, Duke Energy recorded an OTTI of certain wind project investments. The $71 million pretax impairment was recorded within Equity in earnings (losses) of unconsolidated affiliates on Duke Energy's Consolidated Statements of Operations. The other-than-temporary decline in value of these investments was primarily attributable to a sustained decline in market pricing where the wind investments are located, projected net losses for the projects and a reduction in the projected cash distribution to the class of investment owned by Duke Energy.
Other
Duke Energy owns a 25 percent indirect interest in NMC, which owns and operates a methanol and MTBE business in Jubail, Saudi Arabia. International Energy’sDuke Energy's economic ownership interest will decrease to 17.5 percent upon successful startup of NMC's polyacetal production facility, which is expected to occur in Januarythe second quarter of 2017.
Commercial Portfolio
Investments Duke Energy will retain 25 percent of the board representation and voting rights of NMC. The investment in NMC is accounted for under the equity method primarily consist of Duke Energy’s approximate 50 percent ownership interest in the five Catamount Sweetwater, LLC wind farm projects (Phase I-V), and DS Cornerstone, LLC. All of these entities own wind power projects in the United States. Duke Energy also owns a 50 percent interest in Duke American Transmission Co., LLC, which builds, owns and operates electric transmission facilities in North America. Duke Energy also owns a 40 percent and 7.5 percent interest in Atlantic Coast Pipeline, LLC and Sabal Trail Transmission, LLC, respectively, which will build and own natural gas pipelines.accounting.
Other
On December 31, 2013, Duke Energy completed the sale of its 50 percent ownership interest in DukeNet, which owned and operated telecommunications businesses, to Time Warner Cable, Inc. After retiring existing DukeNet debt and payment of transaction expenses, Duke Energy received $215 million in cash proceeds and recorded a $105 million pretax gain in the fourth quarter of 2013.

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PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

13. RELATED PARTY TRANSACTIONS
The Subsidiary Registrants engage in related party transactions in accordance with the applicable state and federal commission regulations. Refer to the Consolidated Balance Sheets of the Subsidiary Registrants for balances due to or due from related parties. Material amounts related to transactions with related parties included in the Consolidated Statements of Operations and Comprehensive Income are presented in the following table.
Years Ended December 31,Years Ended December 31,
(in millions)2015
 2014
 2013
2016
 2015
 2014
Duke Energy Carolinas          
Corporate governance and shared service expenses(a)
$914
 $851
 $927
$831
 $914
 $851
Indemnification coverages(b)
24
 21
 22
22
 24
 21
JDA revenue(c)
51
 133
 121
38
 51
 133
JDA expense(c)
183
 198
 116
156
 183
 198
Progress Energy           
Corporate governance and shared services provided by Duke Energy(a)
$712
 $732
 $290
Corporate governance and shared services provided to Duke Energy(d)

 
 96
Corporate governance and shared service expenses(a)
$710
 $712
 $732
Indemnification coverages(b)
38
 33
 34
35
 38
 33
JDA revenue(c)
183
 198
 116
156
 183
 198
JDA expense(c)
51
 133
 121
38
 51
 133
Intercompany natural gas purchases(d)
19
 
 
Duke Energy Progress          
Corporate governance and shared service expenses(a)
$403
 $386
 $266
$397
 $403
 $386
Indemnification coverages(b)
16
 17
 20
14
 16
 17
JDA revenue(c)
183
 198
 116
156
 183
 198
JDA expense(c)
51
 133
 121
38
 51
 133
Intercompany natural gas purchases(d)
19
 
 
Duke Energy Florida          
Corporate governance and shared service expenses(a)
$309
 $346
 $182
$313
 $309
 $346
Indemnification coverages(b)
22
 16
 14
21
 22
 16
Duke Energy Ohio          
Corporate governance and shared service expenses(a)
$342
 $316
 $347
$356
 $342
 $316
Indemnification coverages(b)
6
 13
 15
5
 6
 13
Duke Energy Indiana          
Corporate governance and shared service expenses(a)
$349
 $384
 $422
$366
 $349
 $384
Indemnification coverages(b)
9
 11
 14
8
 9
 11

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PART II
DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

(a)The Subsidiary Registrants are charged their proportionate share of corporate governance and other shared services costs, primarily related to human resources, employee benefits, legal and accounting fees, as well as other third-party costs. These amounts are recorded in Operation, maintenance and other on the Consolidated Statements of Operations and Comprehensive Income.
(b)The Subsidiary Registrants incur expenses related to certain indemnification coverages through Bison, Duke Energy’s wholly owned captive insurance subsidiary. These expenses are recorded in Operation, maintenance and other on the Consolidated Statements of Operations and Comprehensive Income.
(c)Duke Energy Carolinas and Duke Energy Progress participate in a JDA which allows the collective dispatch of power plants between the service territories to reduce customer rates. Revenues from the sale of power under the JDA are recorded in Operating Revenues on the Consolidated Statements of Operations and Comprehensive Income. Expenses from the purchase of power under the JDA are recorded in Fuel used in electric generation and purchased power on the Consolidated Statements of Operations and Comprehensive Income.
(d)In 2013,Duke Energy Progress Energy Service Company (PESC), a consolidated subsidiary of Progress Energy, charged a proportionate share of corporate governancepurchases natural gas from Piedmont to supply electric generation facilities. These expenses are recorded in Fuel used in electric generation and other costs to consolidated affiliates of Duke Energy. Corporate governance and other shared costs were primarily related to human resources, employee benefits, legal and accounting fees, as well as other third-party costs. These charges were recorded as an offset to Operation, maintenance and other inpurchased power on the Consolidated Statements of Operations and Comprehensive Income. Effective January 1, 2014, PESC was contributed to Duke Energy Corporate Services (DECS), a consolidated subsidiary of Duke Energy, and these costs were no longer charged out of Progress Energy. Progress Energy recorded a non-cash after-tax equity transfer related to the contribution of PESC to DECS in its Consolidated Statements of Changes in Common Stockholder's Equity.
In addition to the amounts presented above, the Subsidiary Registrants record the impact on net income of other affiliate transactions, including rental of office space, participation in a money pool arrangement, other operational transactions and their proportionate share of certain charged expenses. See Note 6 for more information regarding money pool. The net impact of these transactions was not material for the years ended December 31, 2016, 2015 2014 and 20132014 for the Subsidiary Registrants.

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PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

As discussed in Note 17, certain trade receivables have been sold by Duke Energy Ohio and Duke Energy Indiana to CRC, an affiliate formed by a subsidiary of Duke Energy. The proceeds obtained from the sales of receivables are largely cash but do include a subordinated note from CRC for a portion of the purchase price.
Duke Energy Ohio's nonregulated indirect subsidiary, Duke Energy Commercial Asset Management, LLC (DECAM), owned generating plants included in the Midwest Generation Disposal Group sold to Dynegy on April 2, 2015. On April 1, 2015, Duke Energy Ohio distributed its indirect ownership interest in DECAM to a Duke Energy subsidiary and non-cash settled DECAM's intercompany loan payable of $294 million. The intercompany loan payable recorded in Notes payable to affiliated companies on Duke Energy Ohio’s Consolidated Balance Sheets was $459 million as of December 31, 2014.
Refer to Note 2 for further information on the sale of the Midwest Generation Disposal Group.
Intercompany Income Taxes
Duke Energy and its subsidiaries file a consolidated federal income tax return and other state and jurisdictional returns. The Subsidiary Registrants have a tax sharing agreement with Duke Energy for the allocation of consolidated tax liabilities and benefits. Income taxes recorded represent amounts the Subsidiary Registrants would incur as separate C-Corporations. The following table includes the balance of intercompany income tax receivables for the subsidiary registrants.
Duke
 Duke
Duke
Duke
Duke
Duke
 Duke
Duke
Duke
Duke
Energy
Progress
Energy
Energy
Energy
Energy
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)Carolinas
Energy
Progress
Florida
Ohio
Indiana
Carolinas
Energy
Progress
Florida
Ohio
Indiana
December 31, 2016 
Intercompany income tax receivable$1
$
$
$37
$
$
Intercompany income tax payable
37
90

1
3
 
December 31, 2015  
Intercompany income tax receivable$122
$120
$104
$
$54
$
$122
$120
$104
$
$54
$
Intercompany income tax payable


96

47



96

47
 
December 31, 2014 
Intercompany income tax receivable$43
$713
$267
$174
$39
$95
14. DERIVATIVES AND HEDGING
The Duke Energy Registrants use commodity and interest rate contracts to manage commodity price risk and interest rate risk. The primary use of commodity derivatives is to hedge the generation portfolio against changes in the prices of electricity and natural gas. Interest rate swaps are used to manage interest rate risk associated with borrowings.
All derivative instruments not identified as normal purchase/normal sale (NPNS)NPNS are recorded at fair value as assets or liabilities on the Consolidated Balance Sheets. Cash collateral related to derivative instruments executed under master netting arrangements is offset against the collateralized derivatives on the Consolidated Balance Sheets. The cash impacts of settled derivatives are recorded as operating activities on the Consolidated Statements of Cash Flows.
INTEREST RATE RISK
The Duke Energy Registrants are exposed to changes in interest rates as a result of their issuance or anticipated issuance of variable-rate and fixed-rate debt and commercial paper. Interest rate risk is managed by limiting variable-rate exposures to a percentage of total debt and by monitoring changes in interest rates. To manage risk associated with changes in interest rates, the Duke Energy Registrants may enter into interest rate swaps, U.S. Treasury lock agreements and other financial contracts. In anticipation of certain fixed-rate debt issuances, a series of forward-starting interest rate swaps may be executed to lock in components of current market interest rates. These instruments are later terminated prior to or upon the issuance of the corresponding debt.

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DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Cash Flow Hedges
For a derivative designated as hedging the exposure to variable cash flows of a future transaction, referred to as a cash flow hedge, the effective portion of the derivative's gain or loss is initially reported as a component of other comprehensive income and subsequently reclassified into earnings once the future transaction effectsimpacts earnings. Amounts for interest rate contracts are reclassified to earnings as interest expense over the term of the related debt. GainsSee the Consolidated Statements of Changes in Equity for gains and losses reclassified out of AOCI for the years ended December 31, 20152016 and 2014 were not material.2015. Duke Energy's interest rate derivatives designated as hedges include interest rate swaps used to hedge existing debt within the International Energy and Renewables' businesses.Commercial Renewables business.
Undesignated Contracts
Undesignated contracts include contracts not designated as a hedge because they are accounted for under regulatory accounting and contracts that do not qualify for hedge accounting.
Duke Energy’s interest rate swaps for its Regulated Utilitiesregulated operations employ regulatory accounting. With regulatory accounting, the mark-to-market gains or losses on the swaps are deferred as regulatory liabilities or regulatory assets, respectively. Regulatory assets and liabilities are amortized consistent with the treatment of the related costs in the ratemaking process. The accrual of interest on the swaps is recorded as Interest Expense.

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PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

Interest rate contracts issued in 2015 that use regulatory accounting include $400 million notional amountIn August 2016, Duke Energy unwound $1.4 billion of forward-starting interest rate swaps issuedassociated with the Piedmont acquisition financing described in October 2015 at Duke Energy Carolinas to hedge debt anticipated to be issued in 2018. In January 2015, Duke Energy Progress executed fixed-to-floating rate swaps that also use regulatory accounting.Note 6. The swaps were issued to economically convert $250 million of fixed-rate first mortgage bonds due September 15, 2021, to floating-rate with an initial rate of approximately 1.75 percent.
As of December 31, 2015, Duke Energy entered into $900 million of forward-starting interest rate swaps to lock in components of interest rates for the expected financing of the Piedmont acquisition. In January 2016, Duke Energy entered into an additional $500 million notional amount. The swaps doconsidered undesignated as they did not qualify for hedge accounting andaccounting. Losses on the swaps of $190 million are marked-to-market, with any gains or losses included in earnings. The impactwithin Interest Expense on net income was not material in 2015. The swaps will be terminated in conjunction with the acquisition financing.Consolidated Statements of Operations for the year ended December 31, 2016. See noteNote 2 for additional information related to the Piedmont acquisition.
The following table showstables show notional amounts forof outstanding derivatives related to interest rate risk.
 December 31, 2016
   Duke
   Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
(in millions)Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
Cash flow hedges(a)
$750
 $
 $
 $
 $
 $
Undesignated contracts927
 400
 500
 250
 250
 27
Total notional amount$1,677
 $400
 $500
 $250
 $250
 $27
December 31, 2015 December 31, 2014December 31, 2015
  Duke
   Duke
 Duke
 Duke
     Duke
 Duke
  Duke
   Duke
 Duke
 Duke
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Duke
 Progress
 Energy
 Energy
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
(in millions)Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Energy
 Energy
 Florida
 Ohio
Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
Cash flow hedges(a)
$700
 $
 $
 $
 $
 $
 $750
 $
 $
 $
$497
 $
 $
 $
 $
 $
Undesignated contracts1,827
 400
 500
 250
 250
 27
 277
 250
 250
 27
1,827
 400
 500
 250
 250
 27
Total notional amount$2,527
 $400
 $500
 $250
 $250
 $27
 $1,027
 $250
 $250
 $27
$2,324
 $400
 $500
 $250
 $250
 $27
(a)Duke Energy includes amounts related to consolidated Variable Interest Entities (VIEs)VIEs of $497$750 million and $541$497 million at December 31, 2016 and 2015, respectively. The December 31, 2016, amount includes interest rate swaps related to solar facilities financing with an outstanding notional amount of $300 million, including $81 million of four-year swaps and 2014, respectively.$219 million of 18-year swaps. See note 6 for additional information related to the solar facilities financing.
COMMODITY PRICE RISK
The Duke Energy Registrants are exposed to the impact of changes in the prices of electricity purchased and sold in bulk power markets and coal and natural gas.gas purchases. Exposure to commodity price risk is influenced by a number of factors including the term of contracts, the liquidity of markets and delivery locations.
Regulated public utilities may have cost-based rate regulations For the Subsidiary Registrants, bulk power electricity and variouscoal and natural gas purchases flow through fuel adjustment clauses, formula based contracts or other cost recovery mechanisms that resultsharing mechanisms. Differences between the costs included in a limited exposure to market volatility of commodity fuel prices. Financialrates and the incurred costs, including undesignated derivative contracts, where approved by the respective state regulatory commissions, can be used to manage the risk of price volatility. At December 31, 2015 all of Duke Energy's open commodity derivative instruments were undesignated because they are accounted for under regulatory accounting. Mark-to-market gains or losses on contracts that use regulatory accounting arelargely deferred as regulatory liabilitiesassets or regulatory assets, respectively. Undesignated contracts expire as late as 2048.
The Subsidiary Registrants utilize cost-tracking mechanisms, commonly referred to as fuel adjustment clauses. These clausesliabilities. Piedmont policies allow for the recoveryuse of fuelfinancial instruments to hedge commodity price risks, but not for speculative trading. The strategy and fuel-related costs, including settlementsobjective of undesignated derivativesthese hedging programs are to use the financial instruments to reduce gas cost volatility for fuel commodities, and portions of purchased power costs through surcharges on customer rates. The difference between the costs incurred and the surcharge revenues is recorded as an adjustment to Fuel used in electric generation and purchased powercustomers.

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PART II
DUKE ENERGY CORPORATIONregulated or as Operating Revenues: Regulated electric on theDUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements of Operations with an offsetting impact on regulatory assets or liabilities. Therefore, due to the regulatory accounting followed by the Subsidiary Registrants for undesignated derivatives, realized and unrealized gains and losses on undesignated commodity derivatives do not have an immediate impact on reported net income.– (Continued)
Mark-to-market gains and losses related to the nonregulated Midwest generation business were recorded in discontinued operations and open positions at April 2, 2014, were included in the sale of the Disposal Group. Refer to Note 2 for further information on the sale of the Disposal Group. Gains and losses on undesignated derivative contracts for nonregulated continuing operations are not material.
Volumes
The tables below show information relating toinclude volumes of outstanding commodity derivatives. Amounts disclosed represent the absolute value of notional volumes of commodity contracts excluding NPNS. The Duke Energy Registrants have netted contractual amounts where offsetting purchase and sale contracts exist with identical delivery locations and times of delivery. Where all commodity positions are perfectly offset, no quantities are shown.
 December 31, 2015
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
 Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Electricity (gigawatt-hours)70
 
 
 
 
 34
 36
Natural gas (millions of decatherms)398
 66
 332
 117
 215
 
 
December 31, 2014December 31, 2016
  Duke
   Duke
 Duke
 Duke
 Duke
  Duke
   Duke
 Duke
 Duke
 Duke
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Electricity (gigawatt-hours)(b)
25,370
 
 
 
 
 19,141
 
147
 
 
 
 
 
 147
Natural gas (millions of decatherms)(a)
676
 35
 328
 116
 212
 313
 
Natural gas (millions of dekatherms)(a)
890
 91
 269
 118
 151
 
 1
(a)    Amounts at Duke Energy increased 529 million dekatherms due to the acquisition of Piedmont in 2016.
 December 31, 2015
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
 Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Electricity (gigawatt-hours)70
 
 
 
 
 34
 36
Natural gas (millions of dekatherms)398
 66
 332
 117
 215
 
 

174184


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

(a)Duke Energy Ohio includes amounts related to the Disposal Group. Refer to Note 2 for further information on the sale.
(b)Amounts at Duke Energy Ohio include intercompany positions that eliminate at Duke Energy.
LOCATION AND FAIR VALUE OF DERIVATIVE ASSETS AND LIABILITIES RECOGNIZED IN THE CONSOLIDATED BALANCE SHEETS
The following tables show the fair value and balance sheet location of derivative instruments. Although derivatives subject to master netting arrangements are netted on the Consolidated Balance Sheets, the fair values presented below are shown gross and cash collateral on the derivatives has not been netted against the fair values shown.
Derivative Assets December 31, 2015 December 31, 2016
   Duke
   Duke
 Duke
 Duke
 Duke
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions) Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
 Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Commodity Contracts                            
Not Designated as Hedging Instruments                            
Current 12
 
 1
 
 1
 3
 7
 $108
 $23
 $61
 $35
 $26
 $4
 $16
Noncurrent 4
 
 4
 
 4
 
 
 32
 10
 21
 10
 11
 1
 
Total Derivative Assets – Commodity Contracts $16
 $
 $5
 $
 $5
 $3
 $7
 $140
 $33
 $82
 $45
 $37
 $5
 $16
Interest Rate Contracts                            
Designated as Hedging Instruments                            
Noncurrent $4
 $
 $
 $
 $
 $
 $
 $19
 $
 $
 $
 $
 $
 $
Not Designated as Hedging Instruments                            
Current 6
 
 6
 2
 2
 
 
 3
 
 3
 1
 2
 
 
Total Derivative Assets – Interest Rate Contracts $10

$

$6

$2

$2

$

$
 $22

$

$3

$1

$2

$

$
Total Derivative Assets $26
 $
 $11
 $2
 $7
 $3
 $7
 $162
 $33
 $85
 $46
 $39
 $5
 $16
Derivative Liabilities December 31, 2015 December 31, 2016
   Duke
   Duke
 Duke
 Duke
 Duke
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions) Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
 Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Commodity Contracts                            
Not Designated as Hedging Instruments                            
Current $256
 $32
 $222
 $77
 $145
 $
 $
 $43
 $
 $12
 $
 $12
 $
 $2
Noncurrent 100
 8
 92
 16
 71
 
 
 166
 1
 7
 1
 
 
 
Total Derivative Liabilities – Commodity Contracts $356
 $40
 $314
 $93
 $216
 $
 $
 $209
 $1
 $19
 $1
 $12
 $
 $2
Interest Rate Contracts                            
Designated as Hedging Instruments                            
Current $11
 $
 $
 $
 $
 $
 $
 $8
 $
 $
 $
 $
 $
 $
Noncurrent 33
 
 
 
 
 
 
 8
 
 
 
 
 
 
Not Designated as Hedging Instruments                            
Current 4
 
 3
 
 
 1
 
 1
 
 
 
 
 1
 
Noncurrent 15
 5
 5
 5
 
 6
 
 26
 15
 6
 6
 
 5
 
Total Derivative Liabilities – Interest Rate Contracts $63
 $5
 $8
 $5
 $
 $7
 $
 $43
 $15
 $6
 $6
 $
 $6
 $
Total Derivative Liabilities $419
 $45
 $322
 $98
 $216
 $7
 $
 $252
 $16
 $25
 $7
 $12
 $6
 $2

175185


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Derivative Assets December 31, 2014 December 31, 2015
   Duke
   Duke
 Duke
 Duke
 Duke
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions) Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
 Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Commodity Contracts                            
Not Designated as Hedging Instruments                            
Current Assets: Other $18
 $
 $
 $
 $
 $1
 $14
Current Assets: Assets held for sale 15
 
 
 
 
 28
 
Investments and Other Assets: Other 3
 
 
 
 
 
 
Investments and Other Assets: Assets held for sale 15
 
 
 
 
 26
 
Current Liabilities: Other 1
 
 
 
 
 
 
Current Liabilities: Assets held for sale 174
 
 
 
 
 175
 
Deferred Credits and Other Liabilities: Other 2
 
 
 
 
 
 
Deferred Credits and Other Liabilities: Assets held for sale 111
 
 
 
 
 111
 
Current $12
 $
 $1
 $
 $1
 $3
 $7
Noncurrent 4
 
 4
 
 4
 
 
Total Derivative Assets – Commodity Contracts $339

$
 $
 $
 $
 $341
 $14
 $16
 $
 $5
 $
 $5
 $3
 $7
Interest Rate Contracts                            
Designated as Hedging Instruments                            
Investments and Other Assets: Other 10
 
 
 
 
 
 
Noncurrent $3
 $
 $
 $
 $
 $
 $
Not Designated as Hedging Instruments                            
Current Assets: Other 2
 
 2
 
 2
 
 
Current 6
 
 6
 2
 2
 
 
Total Derivative Assets – Interest Rate Contracts $12
 $
 $2
 $
 $2
 $
 $
 $9
 $
 $6
 $2
 $2
 $
 $
Total Derivative Assets $351
 $
 $2
 $
 $2
 $341
 $14
 $25
 $
 $11
 $2
 $7
 $3
 $7
Derivative Liabilities December 31, 2014 December 31, 2015
   Duke
   Duke
 Duke
 Duke
 Duke
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions) Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
 Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Commodity Contracts                            
Designated as Hedging Instruments              
Current Liabilities: Other $
 $
 $1
 $1
 $
 $
 $
Not Designated as Hedging Instruments                            
Current Assets: Assets held for sale 
 
 
 
 
 4
 
Investments and Other Assets: Assets held for sale 
 
 
 
 
 4
 
Current Liabilities: Other 307
 14
 288
 108
 180
 
 
Current Liabilities: Assets held for sale 253
 
 
 
 
 252
 
Deferred Credits and Other Liabilities: Other 91
 5
 80
 23
 57
 
 
Deferred Credits and Other Liabilities: Assets held for sale 208
 
 
 
 
 207
 
Current $256
 $32
 $222
 $77
 $145
 $
 $
Noncurrent 100
 8
 92
 16
 71
 
 
Total Derivative Liabilities – Commodity Contracts $859
 $19
 $369
 $132
 $237
 $467
 $
 $356
 $40
 $314
 $93
 $216
 $
 $
Interest Rate Contracts                            
Designated as Hedging Instruments                            
Current Liabilities: Other $13
 $
 $
 $
 $
 $
 $
Deferred Credits and Other Liabilities: Other 29
 
 
 
 
 
 
Current $9
 $
 $
 $
 $
 $
 $
Noncurrent 13
 
 
 
 
 
 
Not Designated as Hedging Instruments                            
Current Liabilities: Other 1
 
 
 
 
 1
 
Deferred Credits and Other Liabilities: Other 7
 
 2
 
 2
 5
 
Current 4
 
 3
 
 
 1
 
Noncurrent 15
 5
 5
 5
 
 6
 
Total Derivative Liabilities – Interest Rate Contracts $50
 $
 $2
 $
 $2
 $6
 $
 $41
 $5
 $8
 $5
 $
 $7
 $
Total Derivative Liabilities $909
 $19
 $371
 $132
 $239
 $473
 $
 $397
 $45
 $322
 $98
 $216
 $7
 $

176186


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

OFFSETTING ASSETS AND LIABILITIES
The following tables present the line items on the Consolidated Balance Sheets where derivatives are reported. Substantially all of Duke Energy's outstanding derivative contracts are subject to enforceable master netting arrangements. The Gross amounts offset in the tables below show the effect of these netting arrangements on financial position and include collateral posted to offset the net position. The amounts shown are calculated by counterparty. Accounts receivable or accounts payable may also be available to offset exposures in the event of bankruptcy. These amounts are not included in the tables below.
Derivative Assets December 31, 2015 December 31, 2016
   Duke
   Duke
 Duke
 Duke
 Duke
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions) Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
 Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Current                            
Gross amounts recognized $18
 $
 $7
 $2
 $3
 $3
 $7
 $111
 $23
 $64
 $36
 $28
 $4
 $16
Gross amounts offset (3) 
 (2) 
 (2) 
 
 (11) 
 (11) 
 (11) 
 
Net amounts presented in Current Assets: Other $15

$

$5

$2

$1

$3

$7
 $100

$23

$53

$36

$17

$4

$16
Noncurrent                            
Gross amounts recognized $8
 $
 $4
 $
 $4
 $
 $
 $51
 $10
 $21
 $10
 $11
 $1
 $
Gross amounts offset (4) 
 (4) 
 (4) 
 
 (2) (1) (1) (1) 
 
 
Net amounts presented in Investments and Other Assets: Other $4
 $
 $
 $
 $
 $
 $
 $49
 $9
 $20
 $9
 $11
 $1
 $
Derivative Liabilities December 31, 2015 December 31, 2016
   Duke
   Duke
 Duke
 Duke
 Duke
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions) Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
 Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Current                            
Gross amounts recognized $271
 $32
 $225
 $77
 $145
 $1
 $
 $52
 $
 $12
 $
 $12
 $1
 $2
Gross amounts offset (22) 
 (21) (1) (20) 
 
 (11) 
 (11) 
 (11) 
 
Net amounts presented in Current Liabilities: Other $249
 $32
 $204
 $76
 $125
 $1
 $
 $41
 $
 $1
 $
 $1
 $1
 $2
Noncurrent                            
Gross amounts recognized $148
 $13
 $97
 $21
 $71
 $6
 $
 $200
 $16
 $13
 $7
 $
 $5
 $
Gross amounts offset (16) 
 (15) 
 (15) 
 
 (2) (1) (1) (1) 
 
 
Net amounts presented in Deferred Credits and Other Liabilities: Other $132
 $13
 $82
 $21
 $56
 $6
 $
 $198
 $15
 $12
 $6
 $
 $5
 $

177187


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Derivative Assets December 31, 2014
    Duke
   Duke
 Duke
 Duke
 Duke
  Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions) Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Current(a)
              
Gross amounts recognized $210
 $
 $2
 $
 $2
 $204
 $14
Gross amounts offset (153) 
 (2) 
 (2) (179) 
Net amounts subject to master netting 57
 
 
 
 
 25
 14
Amounts not subject to master netting 
 
 
 
 
 
 
Net amounts recognized on the Condensed Consolidated Balance Sheet $57
 $
 $
 $
 $
 $25
 $14
Noncurrent(b)
              
Gross amounts recognized $136
 $
 $
 $
 $
 $137
 $
Gross amounts offset (88) 
 
 
 
 (114) 
Net amounts subject to master netting 48
 
 
 
 
 23
 
Amounts not subject to master netting 5
 
 
 
 
 
 
Net amounts recognized on the Condensed Consolidated Balance Sheet $53
 $
 $
 $
 $
 $23
 $
(a)Amounts for Duke Energy Registrants, except Duke Energy and Duke Energy Ohio, are included in Other within Current Assets on the Condensed Consolidated Balance Sheets. Amounts for Duke Energy and Duke Energy Ohio are included in Other and Assets held for sale within Current Assets on the Condensed Consolidated Balance Sheets.
(b)Amounts for Duke Energy Registrants, except Duke Energy and Duke Energy Ohio, are included in Other within Investments and Other Assets on the Condensed Consolidated Balance Sheets. Amounts for Duke Energy and Duke Energy Ohio are included in Other and Assets held for sale within Investments and Other Assets on the Condensed Consolidated Balance Sheets.
Derivative Liabilities December 31, 2014
    Duke
   Duke
 Duke
 Duke
 Duke
  Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions) Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Current(c)
              
Gross amounts recognized $573
 $14
 $289
 $109
 $180
 $257
 $
Gross amounts offset (213) 
 (17) 
 (17) (222) 
Net amounts subject to master netting 360
 14
 272
 109
 163
 35
 
Amounts not subject to master netting 1
 
 
 
 
 
 
Net amounts recognized on the Condensed Consolidated Balance Sheet $361
 $14
 $272
 $109
 $163
 $35
 $
Noncurrent(d)
              
Gross amounts recognized $319
 $5
 $82
 $23
 $59
 $216
 $
Gross amounts offset (173) 
 (8) 
 (8) (193) 
Net amounts subject to master netting 146
 5
 74
 23
 51
 23
 
Amounts not subject to master netting 16
 
 
 
 
 
 
Net amounts recognized on the Condensed Consolidated Balance Sheet $162
 $5
 $74
 $23
 $51
 $23
 $
(c)Amounts for Duke Energy Registrants, except Duke Energy and Duke Energy Ohio, are included in Other within Current Liabilities on the Condensed Consolidated Balance Sheets. Amounts for Duke Energy and Duke Energy Ohio are included in Other and Liabilities associated with assets held for sale within Current Liabilities on the Condensed Consolidated Balance Sheets.
(d)Amounts for Duke Energy Registrants, except Duke Energy and Duke Energy Ohio, are included in Other within Deferred Credits and Other Liabilities on the Condensed Consolidated Balance Sheets. Amounts for Duke Energy and Duke Energy Ohio are included in Other and Liabilities associated with assets held for sale within Deferred Credits and Other Liabilities on the Condensed Consolidated Balance Sheets.

178


PART II
Derivative Assets December 31, 2015
    Duke
   Duke
 Duke
 Duke
 Duke
  Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions) Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Current              
Gross amounts recognized $18
 $
 $7
 $2
 $3
 $3
 $7
Gross amounts offset (3) 
 (2) 
 (2) 
 
Net amounts presented in Current Assets: Other $15
 $
 $5
 $2
 $1
 $3
 $7
Noncurrent              
Gross amounts recognized $7
 $
 $4
 $
 $4
 $
 $
Gross amounts offset (4) 
 (4) 
 (4) 
 
Net amounts presented in Investments and Other Assets: Other $3
 $
 $
 $
 $
 $
 $
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)
Derivative Liabilities December 31, 2015
    Duke
   Duke
 Duke
 Duke
 Duke
  Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions) Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Current              
Gross amounts recognized $269
 $32
 $225
 $77
 $145
 $1
 $
Gross amounts offset (22) 
 (21) (1) (20) 
 
Net amounts presented in Current Liabilities: Other $247
 $32
 $204
 $76
 $125
 $1
 $
Noncurrent              
Gross amounts recognized $128
 $13
 $97
 $21
 $71
 $6
 $
Gross amounts offset (16) 
 (15) 
 (15) 
 
Net amounts presented in Deferred Credits and Other Liabilities: Other $112
 $13
 $82
 $21
 $56
 $6
 $

OBJECTIVE CREDIT CONTINGENT FEATURES
Certain derivative contracts contain objective credit contingent features. These features include the requirement to post cash collateral or letters of credit if specific events occur, such as a credit rating downgrade below investment grade. The following tables show information with respect to derivative contracts that are in a net liability position and contain objective credit-risk-related payment provisions. Amounts for Duke Energy Ohio and Duke Energy Indiana were not material.
December 31, 2015December 31, 2016
  Duke
   Duke
 Duke
 Duke
  Duke
   Duke
 Duke
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
Duke
 Energy
 Progress
 Energy
 Energy
(in millions)Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
Energy
 Carolinas
 Energy
 Progress
 Florida
Aggregate fair value of derivatives in a net liability position$334
 $45
 $290
 $93
 $194
 $
$34
 $16
 $18
 $6
 $12
Fair value of collateral already posted30
 
 30
 
 30
 

 
 
 
 
Additional cash collateral or letters of credit in the event credit-risk-related contingent features were triggered304
 45
 260
 93
 164
 
34
 16
 18
 6
 12
December 31, 2014December 31, 2015
  Duke
   Duke
 Duke
 Duke
  Duke
   Duke
 Duke
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
Duke
 Energy
 Progress
 Energy
 Energy
(in millions)Energy
 Carolinas
 Energy
 Progress
 Florida
 
Ohio(a)

Energy
 Carolinas
 Energy
 Progress
 Florida
Aggregate fair value of derivatives in a net liability position$845
 $19
 $370
 $131
 $239
 $456
$334
 $45
 $290
 $93
 $194
Fair value of collateral already posted209
 
 23
 
 23
 186
30
 
 30
 
 30
Additional cash collateral or letters of credit in the event credit-risk-related contingent features were triggered407
 19
 347
 131
 216
 41
304
 45
 260
 93
 164
(a)    Duke Energy Ohio includes amounts related to the Disposal Group for the year ended December 31, 2014.
The Duke Energy Registrants have elected to offset cash collateral and fair values of derivatives. For amounts to be netted, the derivative and cash collateral must be executed with the same counterparty under the same master netting arrangement. Amounts disclosed below represent theAt December 31, 2015, receivables of $30 million at Duke Energy Florida related to the right to reclaim cash collateral under master netting arrangements.arrangements were offset against net derivative positions on the Consolidated Balance Sheets of Duke Energy, Progress Energy and Duke Energy Florida.

188


PART II
DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)
 December 31, 2015 December 31, 2014
(in millions)Receivables Receivables
Duke Energy   
Amounts offset against net derivative positions$30
 $145
Amounts not offset against net derivative positions
 64
Progress Energy   
Amounts offset against net derivative positions30
 23
Duke Energy Florida   
Amounts offset against net derivative positions30
 23
Duke Energy Ohio   
Amounts offset against net derivative positions
 122
Amounts not offset against net derivative positions
 64

15. INVESTMENTS IN DEBT AND EQUITY SECURITIES
TRADING SECURITIES
Investments in debt and equity securities held in rabbi trusts associated with certain deferred compensation plans are classified as trading securities. The fair value of these investments was $5 million at December 31, 2016.
AVAILABLE-FOR-SALE SECURITIES
The Duke Energy Registrants classify their investments in debt and equity securities as available-for-sale.
Duke Energy’s available-for-sale securities are primarily comprised of investments held in (i) the NDTF at Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida, (ii) grantor trusts at Duke Energy Progress, Duke Energy Florida and Duke Energy Indiana related to OPEB plans and (iii) Duke Energy’s captive insurance investment portfolio, and (iv) Duke Energy’s foreign operations investment portfolio.Bison.
Duke Energy classifies all other investments in debt and equity securities as long-term, unless otherwise noted.

179


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

Investment Trusts
The investments within the NDTF investments and the Duke Energy Progress, Duke Energy Florida and Duke Energy Indiana grantor trusts (Investment Trusts) are managed by independent investment managers with discretion to buy, sell and invest pursuant to the objectives set forth by the trust agreements. The Duke Energy Registrants have limited oversight of the day-to-day management of these investments. As a result, the ability to hold investments in unrealized loss positions is outside the control of the Duke Energy Registrants. Accordingly, all unrealized losses associated with debt and equity securities within the Investment Trusts are considered other-than-temporary impairmentsOTTIs and are recognized immediately.
Investments within the Investment Trusts generally qualify for regulatory accounting and accordingly realized and unrealized gains and losses are generally deferred as a regulatory asset or liability. Certain investments held in Duke Energy Florida's NDTF were acquired in a settlement with FMJO and do not qualify for regulatory accounting. Unrealized gains and losses on these assets are included in other comprehensive income until realized, unless it is determined the carrying value of an investment is other-than-temporarily impaired, and realized gains and losses are included within Other income and expense, net on the Consolidated Statements of Operations. The value of these assets have not materially changed since the assets were acquired from FMJO. As a result, there is no material impact on earnings of the Duke Energy Registrants.
Other Available-for-Sale Securities
Unrealized gains and losses on all other available-for-sale securities are included in other comprehensive income until realized, unless it is determined the carrying value of an investment is other-than-temporarily impaired. If an other-than-temporary impairmentOTTI exists, the unrealized loss is included in earnings based on the criteria discussed below.
The Duke Energy Registrants analyze all investment holdings each reporting period to determine whether a decline in fair value should be considered other-than-temporary. Criteria used to evaluate whether an impairment associated with equity securities is other-than-temporary includes, but is not limited to, (i) the length of time over which the market value has been lower than the cost basis of the investment, (ii) the percentage decline compared to the cost of the investment and (iii) management’s intent and ability to retain its investment for a period of time sufficient to allow for any anticipated recovery in market value. If a decline in fair value is determined to be other-than-temporary, the investment is written down to its fair value through a charge to earnings.
If the entity does not have an intent to sell a debt security and it is not more likely than not management will be required to sell the debt security before the recovery of its cost basis, the impairment write-down to fair value would be recorded as a component of other comprehensive income, except for when it is determined a credit loss exists. In determining whether a credit loss exists, management considers, among other things, (i) the length of time and the extent to which the fair value has been less than the amortized cost basis, (ii) changes in the financial condition of the issuer of the security, or in the case of an asset backed security, the financial condition of the underlying loan obligors, (iii) consideration of underlying collateral and guarantees of amounts by government entities, (iv) ability of the issuer of the security to make scheduled interest or principal payments and (v) any changes to the rating of the security by rating agencies. If a credit loss exists, the amount of impairment write-down to fair value is split between credit loss and other factors. The amount related to credit loss is recognized in earnings. The amount related to other factors is recognized in other comprehensive income. There were no material credit losses as of December 31, 20152016 and 2014.2015.

180189


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

DUKE ENERGY
The following table presents the estimated fair value of investments in available-for-sale securities.
December 31, 2015 December 31, 2014December 31, 2016 December 31, 2015
Gross
 Gross
   Gross
 Gross
  Gross
 Gross
   Gross
 Gross
  
Unrealized
 Unrealized
   Unrealized
 Unrealized
  Unrealized
 Unrealized
   Unrealized
 Unrealized
  
Holding
 Holding
 Estimated
 Holding
 Holding
 Estimated
Holding
 Holding
 Estimated
 Holding
 Holding
 Estimated
(in millions) Gains
 
Losses(b)

 Fair Value
 Gains
 
Losses(b)

 Fair Value
Gains
 
Losses(a)

 Fair Value
 Gains
 
Losses(a)

 Fair Value
NDTF               
            
  
Cash and cash equivalents $
 $
 $179
 $
 $
 $136
$
 $
 $111
 $
 $
 $179
Equity securities 1,823
 58
 3,590
 1,926
 29
 3,650
2,092
 54
 4,106
 1,823
 58
 3,590
Corporate debt securities 7
 8
 432
 14
 2
 454
10
 8
 528
 7
 8
 432
Municipal bonds 5
 1
 185
 5
 
 184
3
 10
 331
 5
 1
 185
U.S. government bonds 11
 5
 1,254
 19
 2
 978
10
 8
 984
 11
 5
 1,254
Other debt securities
 4
 177
 1
 2
 147

 3
 124
 
 4
 177
Total NDTF(c)
$1,846
 $76
 $5,817
 $1,965
 $35
 $5,549
$2,115
 $83
 $6,184
 $1,846
 $76
 $5,817
Other Investments   
   
   
   
   
   
 
  
  
  
  
  
Cash and cash equivalents $
 $
 $29
 $
 $
 $15
$
 $
 $25
 $
 $
 $29
Equity securities 32
 1
 95
 34
 
 96
38
 
 104
 32
 1
 95
Corporate debt securities 1
 3
 92
 1
 1
 58
1
 1
 66
 1
 3
 92
Municipal bonds 3
 1
 74
 3
 1
 76
2
 1
 82
 3
 1
 74
U.S. government bonds
 
 45
 
 
 27

 1
 51
 
 
 45
Other debt securities
 2
 62
 1
 1
 80

 2
 42
 
 2
 62
Total Other Investments(a)(b)
$36
 $7
 $397
 $39
 $3
 $352
$41
 $5
 $370
 $36
 $7
 $397
Total Investments $1,882
 $83
 $6,214
 $2,004
 $38
 $5,901
$2,156
 $88
 $6,554
 $1,882
 $83
 $6,214
(a)Substantially all these amounts are considered OTTIs on investments within Investment Trusts that have been recognized immediately as a regulatory asset.
(a)(b)     These amounts are recorded in Other within Investments and Other Assets on the Consolidated Balance Sheets.
(b)Substantially all these amounts are considered other-than-temporary impairments on investments within Investment Trusts that have been recognized immediately as a regulatory asset.
(c)The increase in estimated fair value of the NDTF as of December 31, 2015, is primarily due to NDTF assets acquired with the purchase of NCEMPA's ownership interest in certain generating assets and the NDTF assets acquired in a settlement with FMJO. This is partially offset due to reimbursements from the NDTF for Duke Energy Florida's costs related to ongoing decommissioning activity of the Crystal River Unit 3 Nuclear Plant. Refer to Note 2 for further information.
The table below summarizes the maturity date for debt securities.
(in millions)December 31, 2015
Due in one year or less120
Due after one through five years775
Due after five through 10 years598
Due after 10 years828
Total2,321
(in millions)December 31, 2016
Due in one year or less$94
Due after one through five years653
Due after five through 10 years515
Due after 10 years946
Total$2,208
Realized gains and losses, which were determined on a specific identification basis, from sales of available-for-sale securities were as follows.
Years Ended December 31,Years Ended December 31,
(in millions)2015
 2014
 2013
2016
 2015
 2014
Realized gains$193
 $271
 $209
$246
 $193
 $271
Realized losses98
 105
 65
187
 98
 105

181190


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

DUKE ENERGY CAROLINAS
The following table presents the estimated fair value of investments in available-for-sale securities.
  December 31, 2015  December 31, 2014
 Gross
 Gross
   Gross
 Gross
  
 Unrealized
 Unrealized
   Unrealized
 Unrealized
  
 Holding
 Holding
 Estimated
 Holding
 Holding
 Estimated
(in millions)  Gains
 
Losses(b)

 Fair Value
 Gains
 
Losses(b)

 Fair Value
NDTF                   
Cash and cash equivalents  $
 $
 $34
 $
 $
 $51
Equity securities  1,021
 27
 2,094
 1,102
 17
 2,162
Corporate debt securities  3
 5
 292
 8
 2
 316
Municipal bonds  1
 
 33
 1
 
 62
U.S. government bonds  3
 3
 438
 7
 1
 308
Other debt securities  
 4
 147
 1
 2
 133
Total NDTF  
$1,028
 $39
 $3,038
 $1,119
 $22
 $3,032
Other Investments    
   
   
   
   
   
Other debt securities  $
 $1
 $3
 $
 $1
 $3
Total Other Investments(a)
$
 $1
 $3
 $
 $1
 $3
Total Investments  $1,028
 $40
 $3,041
 $1,119
 $23
 $3,035
(a)    These amounts are recorded in Other within Investments and Other Assets on the Consolidated Balance Sheets.
 December 31, 2016 December 31, 2015
 Gross
 Gross
   Gross
 Gross
  
 Unrealized
 Unrealized
   Unrealized
 Unrealized
  
 Holding
 Holding
 Estimated
 Holding
 Holding
 Estimated
(in millions)Gains
 
Losses(a)

 Fair Value
 Gains
 
Losses(a)

 Fair Value
NDTF           
Cash and cash equivalents$
 $
 $18
 $
 $
 $34
Equity securities1,157
 28
 2,245
 1,021
 27
 2,094
Corporate debt securities5
 6
 354
 3
 5
 292
Municipal bonds1
 2
 67
 1
 
 33
U.S. government bonds2
 5
 458
 3
 3
 438
Other debt securities
 3
 116
 
 4
 147
Total NDTF  
$1,165
 $44
 $3,258
 $1,028
 $39
 $3,038
Other Investments 
  
  
  
  
  
Other debt securities$
 $1
 $3
 $
 $1
 $3
Total Other Investments(b)
$
 $1
 $3
 $
 $1
 $3
Total Investments$1,165
 $45
 $3,261
 $1,028
 $40
 $3,041
(b)(a)Substantially all these amounts represent other-than-temporary impairmentsOTTIs on investments within Investment Trusts that have been recognized immediately as a regulatory asset.
(b)These amounts are recorded in Other within Investments and Other Assets on the Consolidated Balance Sheets.
The table below summarizes the maturity date for debt securities.
(in millions)December 31, 2015
December 31, 2016
Due in one year or less$13
$3
Due after one through five years187
230
Due after five through 10 years275
260
Due after 10 years438
505
Total$913
$998
Realized gains and losses, which were determined on a specific identification basis, from sales of available-for-sale securities were as follows.
Years Ended December 31,Years Ended December 31,
(in millions)2015
 2014
 2013
2016
 2015
 2014
Realized gains$158
 $109
 $115
$157
 $158
 $109
Realized losses83
 93
 12
121
 83
 93

182191


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

PROGRESS ENERGY
The following table presents the estimated fair value of investments in available-for-sale securities.
 December 31, 2015 December 31, 2014
 Gross
 Gross
   Gross
 Gross
  
 Unrealized
 Unrealized
   Unrealized
 Unrealized
  
 Holding
 Holding
 Estimated
 Holding
 Holding
 Estimated
(in millions)  Gains
 
Losses(b)

 Fair Value
 Gains
 
Losses(b)

 Fair Value
NDTF                   
Cash and cash equivalents  $
 $
 $145
 $
 $
 $85
Equity securities  802
 31
 1,496
 824
 12
 1,488
Corporate debt securities  4
 3
 140
 6
 
 138
Municipal bonds  4
 1
 152
 4
 
 122
U.S. government bonds  8
 2
 816
 12
 1
 670
Other debt securities  
 
 30
 
 
 14
Total NDTF(c)
$818
 $37
 $2,779
 $846
 $13
 $2,517
Other Investments    
   
   
   
   
   
Cash and cash equivalents  $
 $
 $18
 $
 $
 $15
Municipal bonds  3
 
 45
 3
 
 43
Total Other Investments(a)
$3
 $
 $63
 $3
 $
 $58
Total Investments  $821
 $37
 $2,842
 $849
 $13
��$2,575
(a)     These amounts are recorded in Other within Investments and Other Assets on the Consolidated Balance Sheets.
 December 31, 2016 December 31, 2015
 Gross
 Gross
   Gross
 Gross
  
 Unrealized
 Unrealized
   Unrealized
 Unrealized
  
 Holding
 Holding
 Estimated
 Holding
 Holding
 Estimated
(in millions)Gains
 
Losses(a)

 Fair Value
 Gains
 
Losses(a)

 Fair Value
NDTF           
Cash and cash equivalents$
 $
 $93
 $
 $
 $145
Equity securities935
 26
 1,861
 802
 31
 1,496
Corporate debt securities5
 2
 174
 4
 3
 140
Municipal bonds2
 8
 264
 4
 1
 152
U.S. government bonds8
 3
 526
 8
 2
 816
Other debt securities
 
 8
 
 
 30
Total NDTF$950
 $39
 $2,926
 $818
 $37
 $2,779
Other Investments 
  
  
  
  
  
Cash and cash equivalents$
 $
 $21
 $
 $
 $18
Municipal bonds2
 
 44
 3
 
 45
Total Other Investments(b)
$2
 $
 $65
 $3
 $
 $63
Total Investments$952
 $39
 $2,991
 $821
 $37
 $2,842
(b)(a)Substantially all these amounts are considered other-than-temporary impairmentsrepresent OTTIs on investments within Investment Trusts that have been recognized immediately as a regulatory asset.
(c)(b)The increaseThese amounts are recorded in estimated fair value ofOther within Investments and Other Assets on the NDTF as of December 31, 2015, is primarily due to NDTF assets acquired with the purchase of NCEMPA's ownership interest in certain generating assets and the NDTF assets acquired in a settlement with FMJO. This is partially offset due to reimbursements from the NDTF for Duke Energy Florida's costs related to ongoing decommissioning activity of the Crystal River Unit 3 Nuclear Plant. Refer to Note 2 for further information.Consolidated Balance Sheets.
The table below summarizes the maturity date for debt securities.
(in millions)December 31, 2015
December 31, 2016
Due in one year or less$94
$84
Due after one through five years496
347
Due after five through 10 years254
187
Due after 10 years339
398
Total$1,183
$1,016
Realized gains and losses, which were determined on a specific identification basis, from sales of available-for-sale securities were as follows.
Years Ended December 31,Years Ended December 31,
(in millions)2015
 2014
 2013
2016
 2015
 2014
Realized gains$33
 $157
 $90
$84
 $33
 $157
Realized losses13
 11
 46
64
 13
 11

183192


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

DUKE ENERGY PROGRESS
The following table presents the estimated fair value of investments in available-for-sale securities.
  December 31, 2015 December 31, 2014
 Gross
 Gross
   Gross
 Gross
  
 Unrealized
 Unrealized
   Unrealized
 Unrealized
  
 Holding
 Holding
 Estimated
 Holding
 Holding
 Estimated
(in millions)  Gains
 
Losses(b)

 Fair Value
 Gains
 
Losses(b)

 Fair Value
NDTF                   
Cash and cash equivalents  $
 $
 $110
 $
 $
 $50
Equity securities  596
 25
 1,178
 612
 10
 1,171
Corporate debt securities  3
 2
 96
 5
 
 97
Municipal bonds  4
 1
 150
 4
 
 120
U.S. government bonds  6
 2
 486
 9
 1
 265
Other debt securities  
 
 18
 
 
 8
Total NDTF(c)
$609
 $30
 $2,038
 $630
 $11
 $1,711
Other Investments    
   
   
   
   
   
Cash and cash equivalents  $
 $
 $1
 $
 $
 $
Total Other Investments(a)
$
 $
 $1
 $
 $
 $
Total Investments  $609
 $30
 $2,039
 $630
 $11
 $1,711
(a)    These amounts are recorded in Other with Investments and Other Assets on the Consolidated Balance Sheets.
 December 31, 2016 December 31, 2015
 Gross
 Gross
   Gross
 Gross
  
 Unrealized
 Unrealized
   Unrealized
 Unrealized
  
 Holding
 Holding
 Estimated
 Holding
 Holding
 Estimated
(in millions)Gains
 
Losses(a)

 Fair Value
 Gains
 
Losses(a)

 Fair Value
NDTF           
Cash and cash equivalents$
 $
 $45
 $
 $
 $110
Equity securities704
 21
 1,505
 596
 25
 1,178
Corporate debt securities4
 1
 120
 3
 2
 96
Municipal bonds2
 8
 263
 4
 1
 150
U.S. government bonds5
 2
 275
 6
 2
 486
Other debt securities
 
 5
 
 
 18
Total NDTF$715
 $32
 $2,213
 $609
 $30
 $2,038
Other Investments 
  
  
  
   
  
Cash and cash equivalents$
 $
 $1
 $
 $
 $1
Total Other Investments(b)
$
 $
 $1
 $
 $
 $1
Total Investments$715
 $32
 $2,214
 $609
 $30
 $2,039
(b)(a)Substantially all these amounts represent other-than-temporary impairmentsare considered OTTIs on investments within Investment Trusts that have been recognized immediately as a regulatory asset.
(c)As of December 31, 2015, the estimated fair value of the NDTF includes NDTF assets acquired with the purchase of NCEMPA's ownership interest in certain generating assets. Refer to Note 2 for further information.
(b)     These amounts are recorded in Other within Investments and Other Assets on the Consolidated Balance Sheets.
The table below summarizes the maturity date for debt securities.
(in millions)December 31, 2015
December 31, 2016
Due in one year or less$15
$28
Due after one through five years285
190
Due after five through 10 years206
142
Due after 10 years244
303
Total$750
$663
Realized gains and losses, which were determined on a specific identification basis, from sales of available-for-sale securities were as follows.
Years Ended December 31,Years Ended December 31,
(in millions)2015
 2014
 2013
2016
 2015
 2014
Realized gains$26
 $19
 $58
$71
 $26
 $19
Realized losses11
 5
 26
55
 11
 5

184193


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

DUKE ENERGY FLORIDA
The following table presents the estimated fair value of investments in available-for-sale securities.
  December 31, 2015 December 31, 2014
 Gross
 Gross
   Gross
 Gross
  
 Unrealized
 Unrealized
   Unrealized
 Unrealized
  
 Holding
 Holding
 Estimated
 Holding
 Holding
 Estimated
(in millions)  Gains
 
Losses(b)

 Fair Value
 Gains
 
Losses(b)

 Fair Value
NDTF                   
Cash and cash equivalents  $
 $
 $35
 $
 $
 $35
Equity securities  206
 6
 318
 212
 2
 317
Corporate debt securities  1
 1
 44
 1
 
 41
Municipal bonds  
 
 2
 
 
 2
U.S. government bonds  2
 
 330
 3
 
 405
Other debt securities  
 
 12
 
 
 6
Total NDTF(c)
$209
 $7
 $741
 $216
 $2
 $806
Other Investments    
   
   
   
   
   
Cash and cash equivalents  $
 $
 $6
 $
 $
 $1
Municipal bonds  3
 
 45
 3
 
 43
Total Other Investments(a)
$3
 $
 $51
 $3
 $
 $44
Total Investments  $212
 $7
 $792
 $219
 $2
 $850
(a)    These amounts are recorded in Other with Investments and Other Assets on the Consolidated Balance Sheets.
 December 31, 2016 December 31, 2015
 Gross
 Gross
   Gross
 Gross
  
 Unrealized
 Unrealized
   Unrealized
 Unrealized
  
 Holding
 Holding
 Estimated
 Holding
 Holding
 Estimated
(in millions)Gains
 
Losses(a)

 Fair Value
 Gains
 
Losses(a)

 Fair Value
NDTF            
Cash and cash equivalents$
 $
 $48
 $
 $
 $35
Equity securities231
 5
 356
 206
 6
 318
Corporate debt securities1
 1
 54
 1
 1
 44
Municipal bonds
 
 1
 
 
 2
U.S. government bonds3
 1
 251
 2
 
 330
Other debt securities
 
 3
 
 
 12
Total NDTF(b)
$235
 $7
 $713
 $209
 $7
 $741
Other Investments 
  
  
  
  
  
Cash and cash equivalents$
 $
 $4
 $
 $
 $6
Municipal bonds2
 
 44
 3
 
 45
Total Other Investments(c)
$2
 $
 $48
 $3
 $
 $51
Total Investments$237
 $7
 $761
 $212
 $7
 $792
(b)(a)Substantially all these amounts represent other-than-temporary impairmentsare considered OTTIs on investments within Investment Trusts that have been recognized immediately as a regulatory asset.
(c)(b)The decrease in estimated fair value of the NDTF as of December 31, 2015,2016, is primarily due to reimbursements from the NDTF for costs related to ongoing decommissioning activity of the Crystal River Unit 3 Nuclear Plant, partially offset by the NDTF asset acquired in a settlement with FMJO. Refer to Note 2 for further information.3.
(c)     These amounts are recorded in Other within Investments and Other Assets on the Consolidated Balance Sheets.
The table below summarizes the maturity date for debt securities.
(in millions)December 31, 2015
December 31, 2016
Due in one year or less$79
$56
Due after one through five years211
157
Due after five through 10 years48
45
Due after 10 years95
95
Total$433
$353
Realized gains and losses, which were determined on a specific identification basis, from sales of available-for-sale securities were as follows.
Years Ended December 31,Years Ended December 31,
(in millions)2015
 2014
 2013
2016
 2015
 2014
Realized gains$7
 $138
 $32
$13
 $7
 $138
Realized losses2
 5
 20
9
 2
 5

185194


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

DUKE ENERGY INDIANA
The following table presents the estimated fair value of investments in available-for-sale securities.
December 31, 2015 December 31, 2014December 31, 2016 December 31, 2015
Gross
 Gross
   Gross
 Gross
  Gross
 Gross
   Gross
 Gross
  
Unrealized
 Unrealized
   Unrealized
 Unrealized
  Unrealized
 Unrealized
   Unrealized
 Unrealized
  
Holding
 Holding
 Estimated
 Holding
 Holding
 Estimated
Holding
 Holding
 Estimated
 Holding
 Holding
 Estimated
(in millions) Gains
 
Losses(b)

 Fair Value
 Gains
 
Losses(b)

 Fair Value
Gains
 
Losses(a)

 Fair Value
 Gains
 
Losses(a)

 Fair Value
Other Investments                             
Cash and cash equivalents
$
 $
 $2
 $
 $
 $
$
 $
 $
 $
 $
 $2
Equity securities 27
 
 71
 28
 
 71
33
 
 79
 27
 
 71
Corporate debt securities
 
 2
 
 
 

 
 2
 
 
 2
Municipal bonds
 1
 26
 
 1
 30

 1
 28
 
 1
 26
Total Other Investments(a)
$27
 $1
 $101
 $28
 $1
 $101
U.S. government bonds
 
 1
 
 
 
Total Other Investments(b)
$33
 $1
 $110
 $27
 $1
 $101
Total Investments $27
 $1
 $101
 $28
 $1
 $101
$33
 $1
 $110
 $27
 $1
 $101
(a)Substantially all these amounts are considered OTTIs on investments within Investment Trusts that have been recognized immediately as a regulatory asset.
(a)(b)     These amounts are recorded in Other within Investments and Other Assets on the Consolidated Balance Sheets.
(b)Substantially all these amounts represent other-than-temporary impairments on investments within Investment Trusts that have been recognized immediately as a regulatory asset.
The table below summarizes the maturity date for debt securities.
(in millions)December 31, 2015
December 31, 2016
Due in one year or less$2
$3
Due after one through five years14
13
Due after five through 10 years9
9
Due after 10 years3
6
Total$28
$31
Realized gains and losses, which were determined on a specific identification basis, from sales of available-for-sale securities were insignificant for the years ended December 31, 2016, 2015 2014 and 2013.2014.
16. FAIR VALUE MEASUREMENTS
Fair value is the exchange price to sell an asset or transfer a liability in an orderly transaction between market participants at the measurement date. The fair value definition focuses on an exit price versus the acquisition cost. Fair value measurements use market data or assumptions market participants would use in pricing the asset or liability, including assumptions about risk and the risks inherent in the inputs to the valuation technique. These inputs may be readily observable, corroborated by market data, or generally unobservable. Valuation techniques maximize the use of observable inputs and minimize use of unobservable inputs. A midmarket pricing convention (the midpoint price between bid and ask prices) is permitted for use as a practical expedient.
Fair value measurements are classified in three levels based on the fair value hierarchy:
Level 1 – Unadjusted quoted prices in active markets for identical assets or liabilities that the reporting entity can access at the measurement date. An active market is one in which transactions for an asset or liability occur with sufficient frequency and volume to provide ongoing pricing information.
Level 2 – A fair value measurement utilizing inputs other than quoted prices included in Level 1 that are observable, either directly or indirectly, for an asset or liability. Inputs include (i) quoted prices for similar assets or liabilities in active markets, (ii) quoted prices for identical or similar assets or liabilities in markets that are not active, (iii) and inputs other than quoted market prices that are observable for the asset or liability, such as interest rate curves and yield curves observable at commonly quoted intervals, volatilities and credit spreads. A Level 2 measurement cannot have more than an insignificant portion of its valuation based on unobservable inputs. Instruments in this category include non-exchange-traded derivatives, such as over-the-counter forwards, swaps and options; certain marketable debt securities; and financial instruments traded in less than active markets.
Level 3 – Any fair value measurement which includes unobservable inputs for more than an insignificant portion of the valuation. These inputs may be used with internally developed methodologies that result in management’s best estimate of fair value. Level 3 measurements may include longer-term instruments that extend into periods in which observable inputs are not available.
Not CategorizedAs discussed in Note 1, certainCertain investments are not categorized within the Fair Value hierarchy. These investments are measured based on the fair value of the underlying investments but may not be readily redeemable at that fair value.

195


PART II
DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Fair value accounting guidance permits entities to elect to measure certain financial instruments that are not required to be accounted for at fair value, such as equity method investments or the company’s own debt, at fair value. The Duke Energy Registrants have not elected to record any of these items at fair value.

186


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

Transfers between levels represent assets or liabilities that were previously (i) categorized at a higher level for which the inputs to the estimate became less observable or (ii) classified at a lower level for which the inputs became more observable during the period. The Duke Energy Registrant’s policy is to recognize transfers between levels of the fair value hierarchy at the end of the period. There were no transfers between Levels 1 and 2 during the years ended December 31, 2016, 2015 2014 and 2013.2014. Transfers out of Level 3 during the year ended December 31, 2014, were the result of forward commodity prices becoming observable due to the passage of time.
Valuation methods of the primary fair value measurements disclosed below are as follows.
Investments in equity securities
The majority of investments in equity securities are valued using Level 1 measurements. Investments in equity securities are typically valued at the closing price in the principal active market as of the last business day of the quarter. Principal active markets for equity prices include published exchanges such as NASDAQ andthe New York Stock Exchange (NYSE). and the NASDAQ Stock Market. Foreign equity prices are translated from their trading currency using the currency exchange rate in effect at the close of the principal active market. There was no after-hours market activity that was required to be reflected in the reported fair value measurements.
Investments in debt securities
Most investments in debt securities are valued using Level 2 measurements because the valuations use interest rate curves and credit spreads applied to the terms of the debt instrument (maturity and coupon interest rate) and consider the counterparty credit rating. If the market for a particular fixed incomefixed-income security is relatively inactive or illiquid, the measurement is Level 3.
Commodity derivatives
Commodity derivatives with clearinghouses are classified as Level 1. Other commodity derivatives are primarily valued using internally developed discounted cash flow models which incorporate forward price, adjustments for liquidity (bid-ask spread) and credit or non-performance risk (after reflecting credit enhancements such as collateral), and are discounted to present value. Pricing inputs are derived from published exchange transaction prices and other observable data sources. In the absence of an active market, the last available price may be used. If forward price curves are not observable for the full term of the contract and the unobservable period had more than an insignificant impact on the valuation, the commodity derivative is classified as Level 3. In isolation, increases (decreases) in natural gas forward prices result in favorable (unfavorable) fair value adjustments for gas purchase contracts; and increases (decreases) in electricity forward prices result in unfavorable (favorable) fair value adjustments for electricity sales contracts. Duke Energy regularly evaluates and validates pricing inputs used to estimate the fair value of gas commodity contracts by a market participant price verification procedure. This procedure provides a comparison of internal forward commodity curves to market participant generated curves.
Interest rate derivatives
Most over-the-counter interest rate contract derivatives are valued using financial models which utilize observable inputs for similar instruments and are classified as Level 2. Inputs include forward interest rate curves, notional amounts, interest rates and credit quality of the counterparties.
Goodwill and Long-Lived Assets and Assets Held for SaleOther fair value considerations
See Note 11 for a discussion of the valuation of goodwill and long-livedintangible assets. See Note 2 related to the assets and related liabilitiesacquisition of the Disposal Group classified as held for sale,Piedmont in 2016 and the purchase of NCEMPA's ownership interests in certain generating assets.assets in 2015.
DUKE ENERGY
The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. Derivative amounts in the table below exclude cash collateral which is disclosed in Note 14. See Note 15 for additional information related to investments by major security type.
December 31, 2015December 31, 2016
(in millions)Total Fair Value
Level 1
Level 2
Level 3
Not categorized
Total Fair Value
Level 1
Level 2
Level 3
Not Categorized
Nuclear decommissioning trust fund equity securities$3,590
$3,418
$
$
$172
$4,106
$4,029
$
$
$77
Nuclear decommissioning trust fund debt securities2,227
672
1,555

 2,078
632
1,446


Other available-for-sale equity securities95
95



Other available-for-sale debt securities302
75
222
5
 
Other trading and available-for-sale equity securities104
104



Other trading and available-for-sale debt securities266
75
186
5

Derivative assets26

16
10
 162
5
136
21

Total assets6,240
4,260
1,793
15
172
6,716
4,845
1,768
26
77
Derivative liabilities(419)
(419)
 (252)(2)(63)(187)
Net assets$5,821
$4,260
$1,374
$15
$172
Net assets (liabilities)$6,464
$4,843
$1,705
$(161)$77

187196


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

December 31, 2014December 31, 2015
(in millions)Total Fair Value
Level 1
Level 2
Level 3
Not categorized
Total Fair Value
Level 1
Level 2
Level 3
Not Categorized
Nuclear decommissioning trust fund equity securities$3,650
$3,493
$6
$
$151
$3,590
$3,418
$
$
$172
Nuclear decommissioning trust fund debt securities1,899
648
1,251

 2,227
672
1,555


Other trading and available-for-sale equity securities96
96



Other trading and available-for-sale debt securities263
41
217
5
 
Other available-for-sale equity securities95
95



Other available-for-sale debt securities302
75
222
5

Derivative assets110
49
24
37
 25

15
10

Total assets6,018
4,327
1,498
42
151
6,239
4,260
1,792
15
172
Derivative liabilities(668)(162)(468)(38) (397)
(397)

Net assets$5,350
$4,165
$1,030
$4
$151
$5,842
$4,260
$1,395
$15
$172
The following tables provide reconciliations of beginning and ending balances of assets and liabilities measured at fair value using Level 3 measurements. Amounts included in earnings for derivatives are primarily included in Operating Revenues.
December 31, 2015December 31, 2016
  Derivatives
    Derivatives
  
(in millions) Investments
 (net)
 Total
Investments
 (net)
 Total
Balance at beginning of period$5
 $(1) $4
$5
 $10
 $15
Total pretax realized or unrealized gains (losses) included in earnings
 21
 21
Derivative liability resulting from the acquisition of Piedmont
 (187) (187)
Purchases, sales, issuances and settlements:    

    

Purchases
 24
 24

 33
 33
Sales
 (1) (1)
Settlements
 (37) (37)
 (28) (28)
Total gains included on the Consolidated Balance Sheet as regulatory assets or liabilities
 4
 4

 6
 6
Balance at end of period$5

$10
 $15
$5

$(166) $(161)
December 31, 2014December 31, 2015
  Derivatives
    Derivatives
  
(in millions)Investments
 (net)
 Total
Investments
 (net)
 Total
Balance at beginning of period$20
 $13
 $33
$5
 $(1) $4
Total pretax realized or unrealized gains (losses) included in earnings
 (7) (7)
 21
 21
Purchases, sales, issuances and settlements:    

    

Purchases
 50
 50

 24
 24
Sales(15) 
 (15)
 (1) (1)
Settlements
 (54) (54)
 (37) (37)
Net transfers In (Out) of Level 3 due to observability of inputs
 6
 6
Total losses included on the Consolidated Balance Sheet as regulatory assets or liabilities
 (9) (9)
Total gains included on the Consolidated Balance Sheet as regulatory assets or liabilities
 4
 4
Balance at end of period$5
 $(1) $4
$5
 $10
 $15
Pretax amounts included in the Consolidated Statements of Comprehensive Income related to Level 3 measurements outstanding$
 $(14) $(14)
DUKE ENERGY CAROLINAS
The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. Derivative amounts in the table below exclude cash collateral, which is disclosed in Note 14. See Note 15 for additional information related to investments by major security type.
December 31, 2015December 31, 2016
(in millions)Total Fair Value
Level 1
Level 2
Level 3
Not categorized
Total Fair Value
Level 1
Level 2
Level 3
Not Categorized
Nuclear decommissioning trust fund equity securities$2,094
$1,922
$
$
$172
$2,245
$2,168
$
$
$77
Nuclear decommissioning trust fund debt securities944
246
698

 1,013
178
835


Other available-for-sale debt securities3


3
 3


3

Derivative assets33

33


Total assets3,041
2,168
698
3
172
3,294
2,346
868
3
77
Derivative liabilities(45)
(45)
 (16)
(16)

Net assets$2,996
$2,168
$653
$3
$172
$3,278
$2,346
$852
$3
$77

188197


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

December 31, 2014December 31, 2015
(in millions)Total Fair Value
Level 1
Level 2
Level 3
Not categorized
Total Fair Value
Level 1
Level 2
Level 3
Not Categorized
Nuclear decommissioning trust fund equity securities$2,162
$2,005
$6
$
$151
$2,094
$1,922
$
$
$172
Nuclear decommissioning trust fund debt securities870
138
732

 944
246
698


Other trading and available-for-sale debt securities3


3
 
Other available-for-sale debt securities3


3

Total assets3,035
2,143
738
3
151
3,041
2,168
698
3
172
Derivative liabilities(19)
(19)
 (45)
(45)

Net assets$3,016
$2,143
$719
$3
$151
$2,996
$2,168
$653
$3
$172
The following tables provide a reconciliation of beginning and ending balances of assets and liabilities measured at fair value using Level 3 measurements. There was no change to the Level 3 balance during the yearyears ended December 31, 2016 and 2015.
 
  December 31, 2014
   Derivatives
  
(in millions)Investments
 (net)
 Total
Balance at beginning of period$3
 $(2) $1
Settlements
 2
 2
Balance at end of period$3
 $
 $3
PROGRESS ENERGY
The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. Derivative amounts in the table below exclude cash collateral, which is disclosed in Note 14. See Note 15 for additional information related to investments by major security type.
December 31, 2015December 31, 2016
(in millions)Total Fair Value
Level 1
Level 2
Level 3
Total Fair Value
Level 1
Level 2
Nuclear decommissioning trust fund equity securities$1,496
$1,496
$
$
$1,861
$1,861
$
Nuclear decommissioning trust fund debt securities1,283
426
857

1,065
454
611
Other available-for-sale debt securities63
18
45

65
21
44
Derivative assets11

11

85

85
Total assets2,853
1,940
913

3,076
2,336
740
Derivative liabilities(322)
(322)
(25)
(25)
Net assets$2,531
$1,940
$591
$
$3,051
$2,336
$715
December 31, 2014December 31, 2015
(in millions)Total Fair Value
Level 1
Level 2
Level 3
Total Fair Value
Level 1
Level 2
Nuclear decommissioning trust fund equity securities$1,488
$1,488
$
$
$1,496
$1,496
$
Nuclear decommissioning trust fund debt securities1,029
510
519

1,283
426
857
Other trading and available-for-sale debt securities58
15
43

Other available-for-sale debt securities63
18
45
Derivative assets4

4

11

11
Total assets2,579
2,013
566

2,853
1,940
913
Derivative liabilities(373)
(373)
(322)
(322)
Net assets$2,206
$2,013
$193
$
$2,531
$1,940
$591

189198


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

DUKE ENERGY PROGRESS
The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. Derivative amounts in the table below exclude cash collateral which is disclosed in Note 14. See Note 15 for additional information related to investments by major security type.
December 31, 2015December 31, 2016
(in millions)Total Fair Value
Level 1
Level 2
Level 3
Total Fair Value
Level 1
Level 2
Nuclear decommissioning trust fund equity securities$1,178
$1,178
$
$
$1,505
$1,505
$
Nuclear decommissioning trust fund debt securities and other860
141
719

708
207
501
Other available-for-sale debt securities and other1
1


1
1

Derivative assets2

2

46

46
Total assets2,041
1,320
721

2,260
1,713
547
Derivative liabilities(98)
(98)
(7)
(7)
Net assets$1,943
$1,320
$623
$
$2,253
$1,713
$540
December 31, 2014December 31, 2015
(in millions)Total Fair Value
Level 1
Level 2
Level 3
Total Fair Value
Level 1
Level 2
Nuclear decommissioning trust fund equity securities$1,171
$1,171
$
$
$1,178
$1,178
$
Nuclear decommissioning trust fund debt securities and other540
151
389

860
141
719
Other available-for-sale debt securities and other1
1

Derivative assets2

2
Total assets1,711
1,322
389

2,041
1,320
721
Derivative liabilities(132)
(132)
(98)
(98)
Net assets$1,579
$1,322
$257
$
$1,943
$1,320
$623
DUKE ENERGY FLORIDA
The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. Derivative amounts in the table below exclude cash collateral which is disclosed in Note 14. See Note 15 for additional information related to investments by major security type.
December 31, 2015December 31, 2016
(in millions)Total Fair Value
Level 1
Level 2
Level 3
Total Fair Value
Level 1
Level 2
Nuclear decommissioning trust fund equity securities$318
$318
$
$
$356
$356
$
Nuclear decommissioning trust fund debt securities and other423
285
138

357
247
110
Other available-for-sale debt securities and other51
6
45

48
4
44
Derivative assets7

7

39

39
Total assets799
609
190

800
607
193
Derivative liabilities(216)
(216)
(12)
(12)
Net assets (liabilities)$583
$609
$(26)$
Net assets$788
$607
$181
December 31, 2014December 31, 2015
(in millions)Total Fair Value
Level 1
Level 2
Level 3
Total Fair Value
Level 1
Level 2
Nuclear decommissioning trust fund equity securities$317
$317
$
$
$318
$318
$
Nuclear decommissioning trust fund debt securities and other489
359
130

423
285
138
Other trading and available-for-sale debt securities and other44

44

Other available-for-sale debt securities and other51
6
45
Derivative assets4

4

7

7
Total assets854
676
178

799
609
190
Derivative liabilities(241)
(241)
(216)
(216)
Net assets (liabilities)$613
$676
$(63)$
$583
$609
$(26)

190199


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

DUKE ENERGY OHIO
The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. Derivative amounts in the table below exclude cash collateral, which are disclosed in Note 14.
December 31, 2015December 31, 2016
(in millions)Total Fair Value
 Level 1
 Level 2
 Level 3
Total Fair Value
 Level 1
 Level 2
 Level 3
Derivative assets$3
 $
 $
 $3
$5
 $
 $
 $5
Derivative liabilities(7) 
 (7) 
(6) 
 (6) 
Net assets (liabilities)$(4)
$
 $(7) $3
Net (liabilities) assets$(1)
$
 $(6) $5
December 31, 2014December 31, 2015
(in millions)Total Fair Value
 Level 1
 Level 2
 Level 3
Total Fair Value
 Level 1
 Level 2
 Level 3
Derivative assets$49
 $20
 $9
 $20
$3
 $
 $
 $3
Derivative liabilities(181) (117) (26) (38)(7) 
 (7) 
Net assets (liabilities)$(132)
$(97)
$(17)
$(18)
Net (liabilities) assets$(4)
$

$(7)
$3
The following table provides a reconciliation of beginning and ending balances of assets and liabilities measured at fair value using Level 3 measurements.
Derivatives (net)Derivatives (net)
Years Ended December 31,Years Ended December 31,
(in millions)2015
 2014
2016
 2015
Balance at beginning of period$(18) $(4)$3
 $(18)
Total pretax realized or unrealized gains (losses) included in earnings21
 (9)
 21
Purchases, sales, issuances and settlements:      
Purchases5
 1
5
 5
Settlements(5) (13)(5) (5)
Net transfers In (Out) of Level 3 due to observability of inputs
 6
Total gains included on the Consolidated Balance Sheet as regulatory assets or liabilities
 1
2
 
Balance at end of period$3
 $(18)$5
 $3
DUKE ENERGY INDIANA
The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. Derivative amounts in the table below exclude cash collateral, which is disclosed in Note 14. See Note 15 for additional information related to investments by major security type.
December 31, 2015December 31, 2016
(in millions)Total Fair Value
Level 1
Level 2
Level 3
Total Fair Value
Level 1
Level 2
Level 3
Other available-for-sale equity securities$71
$71
$
$
$79
$79
$
$
Other available-for-sale debt securities and other30
2
28

31

31

Derivative assets7


7
16


16
Net assets (liabilities)$108
$73
$28
$7
Total assets126
79
31
16
Derivative liabilities(2)(2)

Net assets$124
$77
$31
$16
  December 31, 2014
(in millions)Total Fair Value
Level 1
Level 2
Level 3
Other trading and available-for-sale equity securities$71
$71
$
$
Other trading and available-for-sale debt securities and other30

30

Derivative assets14


14
Net assets (liabilities)$115
$71
$30
$14
 December 31, 2015
(in millions)Total Fair Value
Level 1
Level 2
Level 3
Other available-for-sale equity securities$71
$71
$
$
Other available-for-sale debt securities and other30
2
28

Derivative assets7


7
Net assets$108
$73
$28
$7

191200


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

The following table provides a reconciliation of beginning and ending balances of assets and liabilities measured at fair value using Level 3 measurements.
Derivatives (net)Derivatives (net)
Years Ended December 31,Years Ended December 31,
(in millions)2015
 2014
2016
 2015
Balance at beginning of period$14
 $12
$7
 $14
Total pretax realized or unrealized gains included in earnings
 3
Purchases, sales, issuances and settlements:      
Purchases19
 49
29
 19
Settlements(30) (41)(24) (30)
Total gains (losses) included on the Consolidated Balance Sheet as regulatory assets or liabilities4
 (9)
Total gains included on the Consolidated Balance Sheet as regulatory assets or liabilities4
 4
Balance at end of period$7
 $14
$16
 $7
QUANTITATIVE INFORMATION ABOUT UNOBSERVABLE INPUTS
The following table includes quantitative information about the Duke Energy Registrants' derivatives classified as Level 3.
December 31, 2015December 31, 2016
Fair Value    Fair Value    
Investment Type(in millions)Valuation TechniqueUnobservable InputRange  (in millions)Valuation TechniqueUnobservable InputRange
Duke Energy               
Financial transmission rights (FTRs)$10
RTO auction pricingFTR price – per Megawatt-Hour (MWh)$(0.74)-7.29
Natural gas contracts$(187)Discounted cash flowForward natural gas curves - price per million British thermal unit (MMBtu)$2.31
-$4.18
Financial Transmission Rights (FTRs)21
RTO auction pricingFTR price – per megawatt-hour (MWh)(0.83)-9.32
Total Level 3 derivatives$(166)    
Duke Energy Ohio  
    $5
RTO auction pricingFTR price – per MWh$0.77
-$3.52
FTRs$3
RTO auction pricingFTR price – per MWh$0.67
-2.53
Duke Energy Indiana  
    16
RTO auction pricingFTR price – per MWh(0.83)-9.32
FTRs$7
RTO auction pricingFTR price – per MWh$(0.74)-7.29
  December 31, 2014
 Fair Value     
Investment Type(in millions)Valuation TechniqueUnobservable InputRange  
Duke Energy            
Natural gas contracts$(5)Discounted cash flowForward natural gas curves – price per Million British Thermal Unit (MMBtu)$2.12
-4.35
FTRs14
RTO auction pricingFTR price – per MWh(1.92)-9.86
Electricity contracts(1)Discounted cash flowForward electricity curves – price per MWh25.16
-51.75
Commodity capacity option contracts2
Discounted cash flowForward capacity option curves  – price per MW day21.00
-109.00
Reserves(11)  Bid-ask spreads, implied volatility, probability of default  
    
Total Level 3 derivatives$(1)      
    
Duke Energy Ohio  
        
Electricity contracts$(6)Discounted cash flowForward electricity curves – price per MWh$25.25
-51.75
Natural gas contracts(5)Discounted cash flowForward natural gas curves – price per MMBtu2.12
-4.35
Reserves(7)  Bid-ask spreads, implied volatility, probability of default    
Total Level 3 derivatives$(18)        
Duke Energy Indiana  
        
FTRs$14
RTO auction pricingFTR price – per MWh$(1.92)-9.86
 December 31, 2015
 Fair Value     
Investment Type(in millions)Valuation TechniqueUnobservable InputRange
Duke Energy$10
RTO auction pricingFTR price – per MWh$(0.74)-$7.29
Duke Energy Ohio3
RTO auction pricingFTR price – per MWh0.67
-2.53
Duke Energy Indiana7
RTO auction pricingFTR price – per MWh(0.74)-7.29

192


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

OTHER FAIR VALUE DISCLOSURES
The fair value and book value of long-term debt, including current maturities, is summarized in the following table. Estimates determined are not necessarily indicative of amounts that could have been settled in current markets. Fair value of long-term debt uses Level 2 measurements.
December 31, 2015 December 31, 2014December 31, 2016 December 31, 2015
(in millions)Book Value
 Fair Value
 Book Value
 Fair Value
Book Value
 Fair Value
 Book Value
 Fair Value
Duke Energy$39,569
 $42,537
 $39,868
 $44,566
$47,895
 $49,161
 $38,868
 $41,767
Duke Energy Carolinas8,367
 9,156
 8,353
 9,626
9,603
 10,494
 8,367
 9,156
Progress Energy14,464
 15,856
 14,668
 16,951
17,541
 19,107
 14,464
 15,856
Duke Energy Progress6,518
 6,757
 6,170
 6,696
7,011
 7,357
 6,518
 6,757
Duke Energy Florida4,266
 4,908
 4,823
 5,767
6,125
 6,728
 4,266
 4,908
Duke Energy Ohio1,598
 1,724
 1,760
 1,970
1,884
 2,020
 1,598
 1,724
Duke Energy Indiana3,768
 4,219
 3,769
 4,456
3,786
 4,260
 3,768
 4,219
At both December 31, 20152016 and December 31, 2014,2015, fair value of cash and cash equivalents, accounts and notes receivable, accounts payable, notes payable and commercial paper and non-recourse notes payable of variable interest entitiesVIEs are not materially different from their carrying amounts because of the short-term nature of these instruments and/or because the stated rates approximate market rates.

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DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

17. VARIABLE INTEREST ENTITIES
A VIE is an entity that is evaluated for consolidation using more than a simple analysis of voting control. The analysis to determine whether an entity is a VIE considers contracts with an entity, credit support for an entity, the adequacy of the equity investment of an entity and the relationship of voting power to the amount of equity invested in an entity. This analysis is performed either upon the creation of a legal entity or upon the occurrence of an event requiring reevaluation, such as a significant change in an entity’s assets or activities. A qualitative analysis of control determines the party that consolidates a VIE. This assessment is based on (i) what party has the power to direct the most significant activities of the VIE that most significantly impact its economic performance and (ii) what party has rights to receive benefits or is obligated to absorb losses that arecould potentially be significant to the VIE. The analysis of the party that consolidates a VIE is a continual reassessment.
No financial support was provided to any of the consolidated VIEs during the years ended December 31, 2015, 2014 and 2013, or is expected to be provided in the future, that was not previously contractually required.

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DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

CONSOLIDATED VIEs
The following tables summarize the impact of VIEs consolidated by Duke Energy and the Subsidiary Registrants on the Consolidated Balance Sheets.
  December 31, 2015
 Duke Energy
 Duke
Duke
Duke
    
 Energy
Energy
Energy
    
 Carolinas
Progress
Florida
    
(in millions)  DERF
DEPR(c)

DEFR(c)

CRCRenewablesOtherTotal
ASSETS    
  
  
  
  
  
  
Current Assets    
  
  
  
  
  
  
Cash and Cash Equivalents$
$
$
$
$
$2
$2
Restricted receivables of variable interest entities (net of allowance for doubtful accounts)596
349
309
454
19
21
1,748
Other   



138
4
142
Investments and Other Assets    
  
  
  
  
  
  
Other  



70

70
Property, Plant and Equipment    
  
  
  
  
  
  
Property, plant and equipment, cost(a)




2,015
20
2,035
Accumulated depreciation and amortization  



(321)(6)(327)
Total assets  $596
$349
$309
$454
$1,921
$41
$3,670
LIABILITIES AND EQUITY    
  
  
  
  
  
  
Current Liabilities    
  
  
  
  
  
  
Accounts payable  



35

35
Taxes accrued  5
3


5
1
14
Current maturities of long-term debt  



108
17
125
Other   



15
2
17
Long-Term Debt(b)
425
254
225
325
968

2,197
Deferred Credits and Other Liabilities    
  
  
  
  
   
Deferred income taxes



289

289
Asset retirement obligations



35

35
Other   



33

33
Total liabilities   $430
$257
$225
$325
$1,488
$20
$2,745
Net assets of consolidated variable interest entities  $166
$92
$84
$129
$433
$21
$925

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PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

  December 31, 2014
 Duke Energy
 Duke
Duke
Duke
    
 Energy
Energy
Energy
    
 Carolinas
Progress
Florida
    
(in millions)  DERF
DEPR(c)

DEFR(c)

CRCRenewablesOtherTotal
ASSETS    
  
   
  
  
  
Current Assets    
  
   
  
  
  
Restricted receivables of variable interest entities (net of allowance for doubtful accounts) $647
$436
$305
$547
$20
$18
$1,973
Other  



68
6
74
Investments and Other Assets    
  
   
  
  
  
Other  



25
25
50
Property, Plant and Equipment    
  
   
  
  
  
Property, plant and equipment, cost(a)




1,855
18
1,873
Accumulated depreciation and amortization  

��

(250)(5)(255)
Regulatory Assets and Deferred Debits    
  
   
  
  
  
Other   



34
2
36
Total assets   $647
$436
$305
$547
$1,752
$64
$3,751
LIABILITIES AND EQUITY    
  
   
  
  
  
Current Liabilities    
  
   
  
  
  
Accounts payable   




3

3
Taxes accrued   




6

6
Current maturities of long-term debt  




68
16
84
Other   




16
5
21
Long-Term Debt(b)
400
300
225
325
967
17
2,234
Deferred Credits and Other Liabilities    
  
   
  


  
Deferred income taxes   




283

283
Asset retirement obligations   




29

29
Other  




34
4
38
Total liabilities   $400
$300
$225
$325
$1,406
$42
$2,698
Net assets of consolidated variable interest entities  $247
$136
$80
$222
$346
$22
$1,053
(a)Restricted as collateral for non-recourse debt of VIEs.
(b)Non-recourse to the general assets of the applicable registrant.
(c)The amount for Progress Energy is equal to the total amount for Duke Energy Progress and Duke Energy Florida.
The obligations of these VIEs discussed in the following paragraphs are non-recoursenonrecourse to the Duke Energy Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida. These entitiesRegistrants. The registrants have no requirement to provide liquidity to, purchase assets of or guarantee performance of these VIEs unless noted in the following paragraphs.
No financial support was provided to any of the consolidated VIEs during the years ended December 31, 2016, 2015 and 2014, or is expected to be provided in the future, that was not previously contractually required.
Receivables Financing – DERF/DEPR/DEFR
Duke Energy Receivables Finance Company, LLC (DERF), Duke Energy Progress Receivables, LLC (DEPR) and Duke Energy Florida Receivables, LLC (DEFR) are bankruptcy remote, special purpose subsidiaries of Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida, respectively. On a daily basis, DERF, DEPR and DEFR buy certain accounts receivable arising from the sale of electricity and/or related services from their parent companies. DERF, DEPR and DEFR are wholly owned limited liability companies with separate legal existence from their parentsparent companies and their assets are not generally available to creditors of their parent companies. On a revolving basis, DERF, DEPR and DEFR buy certain accounts receivable arising from the sale of electricity and related services from their parent companies.
DERF, DEPR and DEFR borrow amounts under credit facilities to buy thethese receivables. Borrowing availability from the credit facilities is limited to the amount of qualified receivables sold, whichpurchased. The sole source of funds to satisfy the related debt obligations is generally expected to be in excess ofcash collections from the credit facilities. Thereceivables. Amounts borrowed under the credit facilities are reflected on the Consolidated Balance Sheets as Long-Term Debt. The secured credit facilities were not structured to meet the criteria for sale accounting treatment under the accounting guidance for transfers and servicing of financial assets.
The most significant activity that impacts the economic performance of DERF, DEPR and DEFR are the decisions made to manage delinquent receivables. Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida consolidate DERF, DEPR and DEFR, respectively, as they make those decisions.

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DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLCReceivables FinancingDUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

The following table outlines amounts and expiration dates of the credit facilities.
 DERF
DEPR
DEFR
Credit facility amount (in millions)$425
$300
$225
Expiration dateDecember 2018
February 2019
March 2017
CRC
CRC
is a bankruptcy remote, special purpose entity indirectly owned by Duke Energy. On a revolving basis, Duke Energy Ohio and Duke Energy Indiana sell to CRC buys certain accounts receivable arising from the sale of electricity, natural gas and related services. The receivables sold are securitized byservices from Duke Energy Ohio and Duke Energy Indiana. CRC throughborrows amounts under a $325 million credit facility managed by two unrelated third parties.to buy the receivables from Duke Energy Ohio and Duke Energy Indiana. Borrowing availability from the credit facility is limited to the amount of qualified receivables sold to CRC. The sole source of funds to satisfy the related debt obligation is cash collections from the receivables. TheAmounts borrowed under the credit facility expires in December 2018 and isare reflected on Duke Energy's Consolidated Balance Sheets as Long-Term Debt.
The proceeds Duke Energy Ohio and Duke Energy Indiana receive from the sale of receivables to CRC are typically 75 percent cash and 25 percent in the form of a subordinated note from CRC. The subordinated note is a retained interest in the receivables sold. Depending on collection experience, additional equity infusions to CRC may be required by Duke Energy to maintain a minimum equity balance of $3 million. There were no infusions to CRC during the years ended December 31, 2015 and 2014.
CRC is considered a VIE because (i) equity capitalization is insufficient to support its operations, (ii) power to direct the most significant activities that most significantly impact the economic performance of the entity are not performed by the equity holder Cinergy, and (iii) deficiencies in net worth of CRC are not funded by Cinergy, but by Duke Energy. The most significant activityactivities that impact the economic performance of CRC relates to theare decisions made with respect to the management ofmanage delinquent receivables. Duke Energy consolidates CRC as it makes these decisions. Neither Duke Energy Ohio nor Duke Energy Indiana consolidate CRC.
RenewablesReceivables Financing – Credit Facilities
CertainThe following table outlines amounts and expiration dates of the credit facilities described above.
 Duke Energy
   Duke Energy
 Duke Energy
 Duke Energy
   Carolinas
 Progress
 Florida
 CRC
 DERF
 DEPR
 DEFR
Expiration dateDecember 2018
 December 2018
 February 2019
 April 2019
Credit facility amount (in millions)$325
 $425
 $300
 $225
Amounts borrowed at December 31, 2016325
 425
 300
 225
Amounts borrowed at December 31, 2015325
 425
 254
 225
Nuclear Asset-Recovery Bonds – DEFPF
DEFPF is a bankruptcy remote, wholly owned special purpose subsidiary of Duke Energy’s renewable energy facilitiesEnergy Florida. DEFPF was formed in 2016 for the sole purpose of issuing nuclear asset-recovery bonds to finance Duke Energy Florida's unrecovered regulatory asset related to Crystal River Unit 3.

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DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

In June 2016, DEFPF issued $1,294 million of senior secured bonds and used the proceeds to acquire nuclear asset-recovery property from Duke Energy Florida. The nuclear asset-recovery property acquired includes the right to impose, bill, collect and adjust a non-bypassable nuclear asset-recovery charge from all Duke Energy Florida retail customers until the bonds are VIEs duepaid in full and all financing costs have been recovered. The nuclear asset-recovery bonds are secured by the nuclear asset-recovery property and cash collections from the nuclear asset-recovery charges are the sole source of funds to long-term fixed pricesatisfy the debt obligation. The bondholders have no recourse to Duke Energy Florida. For additional information see Notes 4 and 6.
DEFPF is considered a VIE primarily because the equity capitalization is insufficient to support its operations. Duke Energy Florida has the power purchase agreements. These fixed price agreements effectively transfer commodity price risk to direct the buyersignificant activities of the power. VIE as described above and therefore Duke Energy Florida is considered the primary beneficiary and consolidates DEFPF.
The following table summarizes the impact of DEFPF on Duke Energy Florida's Consolidated Balance Sheets.
(in millions)December 31, 2016
Receivables of VIEs$6
Regulatory Assets: Current50
Current Assets: Other53
Regulatory Assets and Deferred Debits: Regulatory assets1,142
Current Liabilities: Other17
Current maturities of long-term debt62
Long-Term Debt1,217
Commercial Renewables
Certain other of Duke Energy’s renewable energy facilities are VIEs due to Duke Energy issuing guarantees for debt service and operations and maintenance reserves in support of debt financings. For certain VIEs, assetsAssets are restricted and cannot be pledged as collateral or sold to third parties without prior approval of debt holders. The most significant activities that most significantly impact the economic performance of these renewable energy facilities were decisions associated with siting, negotiating purchase power agreements,PPAs, engineering, procurement and construction and decisions associated with ongoing operations and maintenance-related activities. Duke Energy consolidates the entities as it makesis responsible for all of these decisions. The table below presents material balances reported on Duke Energy's Consolidated Balance Sheets related to renewables VIEs.
(in millions)December 31, 2016
December 31, 2015
Current Assets: Other$223
$138
Property, plant and equipment, cost3,419
2,015
Accumulated depreciation and amortization(453)(321)
Current maturities of long-term debt198
108
Long-Term Debt1,097
968
Deferred Credits and Other Liabilities: Deferred income taxes275
289
Deferred Credits and Other Liabilities: Other252
33
NON-CONSOLIDATED VIEs
The following tables below showsummarize the impact of non-consolidated VIEs not consolidated and how these entities impacton the Consolidated Balance Sheets.
December 31, 2015December 31, 2016
Duke Energy      Duke Energy    
      Duke
 Duke
        Duke
 Duke
      Energy
 Energy
Pipeline
 Commercial
     Energy
 Energy
(in millions)Renewables
 Other
 Total
 Ohio
 Indiana
Investments
 Renewables
 Other
 Total
 Ohio
 Indiana
Receivables$
 $
 $
 $47
 $60
Receivables from affiliated companies$
 $
 $
 $
 $82
 $101
Investments in equity method unconsolidated affiliates235
 152
 387
 
 
487
 174
 90
 751
 
 
Investments and other assets12
 
 
 12
 
 
Total assets$235
 $152
 $387
 $47
 $60
$499
 $174
 $90
 $763
 $82
 $101
Other current liabilities
 3
 3
 
 

 
 3
 3
 
 
Deferred credits and other liabilities
 14
 14
 
 

 
 13
 13
 
 
Total liabilities$
 $17
 $17
 $
 $
$
 $
 $16
 $16
 $
 $
Net assets (liabilities)$235
 $135
 $370
 $47
 $60
$499
 $174
 $74
 $747
 $82
 $101

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PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

December 31, 2014December 31, 2015
Duke Energy     
Duke Energy    
      Duke
 Duke
        Duke
 Duke
      Energy
 Energy
Pipeline
 Commercial
     Energy
 Energy
(in millions)Renewables
 Other
 Total
 Ohio
 Indiana
Investments
 Renewables
 Other
 Total
 Ohio
 Indiana
Receivables$
 $
 $
 $91
 $113
Receivables from affiliated companies$
 $
 $
 $
 $47
 $60
Investments in equity method unconsolidated affiliates150
 38
 188
 
 
113
 235
 39
 387
 

 
Intangibles
 
 
 
 
Investments and other assets
 4
 4
 
 
Total assets$150
 $42
 $192
 $91
 $113
$113
 $235
 $39
 $387
 $47
 $60
Other current liabilities
 3
 3
 
 

 
 3
 3
 
 
Deferred credits and other liabilities
 14
 14
 
 

 
 14
 14
 
 
Total liabilities$
 $17
 $17
 $
 $
$
 $
 $17
 $17
 $
 $
Net assets$150
 $25
 $175
 $91
 $113
$113
 $235
 $22
 $370
 $47
 $60
The Duke Energy Registrants are not aware of any situations where the maximum exposure to loss significantly exceeds the carrying values shown above except for the power purchase agreement with OVEC, which is discussed below, and various guarantees, some of which are reflected in the table above as Deferred credits and other liabilities. For more information on various guarantees, refer to Note 7, "Guarantees7.
Pipeline Investments
Duke Energy has investments in various joint ventures with pipeline projects currently under construction. These entities are considered VIEs due to having insufficient equity to finance their own activities without subordinated financial support. Duke Energy does not have the power to direct the activities that most significantly impact the economic performance, the obligation to absorb losses or the right to receive benefits of these VIEs and Indemnifications."therefore does not consolidate these entities. The table below presents Duke Energy's ownership interest and investment balance in in these joint ventures.
   Investment Amount (in millions)
 Ownership December 31, December 31,
Entity Name
Interest(a)
 2016 2015
ACP47% $265
 $52
Sabal Trail7.5% 140
 61
Constitution24% 82
 
Total  $487
 $113
(a)The percentages presented reflect Duke Energy's ownership interest as of December 31, 2016. The investment amount presented for ACP as of December 31, 2015, reflects 40 percent ownership interest prior to acquiring an additional 7 percent as a result of the Piedmont acquisition. See Notes 2 and 4 for additional information related to the Piedmont acquisition and increased ownership of ACP.
Commercial Renewables
Duke Energy has investments in various renewable energy project entities. Some of these entities are VIEs due to long-term fixed price power purchase agreements. These fixed price agreements effectively transfer commodity price risk to the buyerDuke Energy issuing guarantees for debt service and operations and maintenance reserves in support of the power.debt financings. Duke Energy does not consolidate these VIEs because power to direct and control key activities is shared jointly by Duke Energy and other owners.
During the year ended December 31, 2016, Duke Energy recorded a $71 million pretax OTTI of certain wind project investments within Equity in earnings (losses) of unconsolidated affiliates on Duke Energy's Consolidated Statements of Operations. See Note 12 for additional information related to the OTTI.
Other
Duke Energy holds a 50 percent equity interest in Duke-American Transmission Company, LLC (DATC).DATC. DATC is considered a VIE due to having insufficient equity at risk to permit DATC to finance itstheir own activities without additional subordinated financial support. The activities that most significantly impact DATC’sDATC's economic performance are the decisions related to investing in existing and development of new transmission facilities. The power to direct these activities is jointly and equally shared by Duke Energy and the other joint venture partner, and,American Transmission Company, LLC, therefore Duke Energy does not consolidate.consolidate DATC.
Duke Energy hasholds a 40 percent equity interest and a 7.550 percent equity interest in ACP and Sabal Trail, respectively. These entities arePioneer. Pioneer is considered VIEs as theira VIE due to having insufficient equity is not sufficient to permit the entities to finance their own activities without additional subordinated financial support. The activityactivities that most significantly impacts theimpact Pioneer's economic performance are decisions related to the development of both ACPnew transmission facilities. The power to direct these activities is jointly and Sabal Trail is construction.equally shared by Duke Energy and the other joint venture partner, American Electric Power, therefore Duke Energy does not control these activities and therefore does not consolidate ACP or Sabal Trail.Pioneer.

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DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

OVEC
Duke Energy Ohio’s 9 percent ownership interest in OVEC is considered a non-consolidated VIE. Through its ownership interest in OVEC,VIE due to having insufficient equity to finance their activities without subordinated financial support. As a counterparty to an inter-company power agreement (ICPA), Duke Energy Ohio has a contractual arrangement to buy power from OVEC’s power plants through June 2040. Proceeds from the sale of power by OVEC to2040 commensurate with its power purchase agreement counterparties are designedparticipation ratio, which is equivalent to be sufficient to meet itsDuke Energy Ohio's ownership interest. Costs, including fuel, operating expenses, fixed costs, debt amortization, and interest expense as well as earn a returnare allocated to counterparties to the ICPA based on equity. Accordingly, thetheir power participation ratio. The value of this contractthe ICPA is subject to variability due to fluctuationsfluctuation in power prices and changes in OVEC’s costsOVEC's cost of business, including costs associated with its 2,256 MW of coal-fired generation capacity. Proposed environmental rulemakingDeterioration in the credit quality, or bankruptcy of one or more parties to the ICPA could increase the costs of OVEC, which would be passed through to Duke Energy Ohio.OVEC. In 2014, Duke Energy Ohio recorded a $94 million impairment related to OVEC.addition, certain proposed environmental rulemaking could result in future increased cost allocations.
CRC
See discussion under Consolidated VIEs for additional information related to CRC.
Amounts included in Receivables from affiliated companies in the above table for Duke Energy Ohio and Duke Energy Indiana reflect their retained interest in receivables sold to CRC. These subordinated notes held by Duke Energy Ohio and Duke Energy Indiana are stated at fair value. Carrying values of retained interests are determined by allocating carrying value of the receivables between assets sold and interests retained based on relative fair value. The allocated bases of the subordinated notes are not materially different than their face value because (i) the receivables generally turnover in less than two months, (ii) credit losses are reasonably predictable due to the broad customer base and lack of significant concentration and (iii) the equity in CRC is subordinate to all retained interests and thus would absorb losses first. The hypothetical effect on fair value of the retained interests assuming both a 10 percent and a 20 percent unfavorable variation in credit losses or discount rates is not material due to the short turnover of receivables and historically low credit loss history. Interest accrues to Duke Energy Ohio and Duke Energy Indiana on the retained interests using the acceptable yield method. This method generally approximates the stated rate on the notes since the allocated basis and the face value are nearly equivalent. An impairment charge is recorded against the carrying value of both retained interests and purchased beneficial interest whenever it is determined that an other-than-temporary impairmentOTTI has occurred.

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DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

Key assumptions used in estimating fair value are detailed in the following table.
Duke Energy Ohio Duke Energy IndianaDuke Energy Ohio Duke Energy Indiana
2015
 2014
 2015
 2014
2016
 2015
 2016
 2015
Anticipated credit loss ratio0.6% 0.6% 0.3% 0.3%0.5% 0.6% 0.3% 0.3%
Discount rate1.2% 1.2% 1.2% 1.2%1.5% 1.2% 1.5% 1.2%
Receivable turnover rate12.9% 12.8% 10.6% 10.5%13.3% 12.9% 10.6% 10.6%
The following table shows the gross and net receivables sold.
Duke Energy Ohio Duke Energy IndianaDuke Energy Ohio Duke Energy Indiana
(in millions)2015
 2014
 2015
 2014
2016
 2015
 2016
 2015
Receivables sold$233
 $273
 $260
 $310
$267
 $233
 $306
 $260
Less: Retained interests47
 91
 60
 113
82
 47
 101
 60
Net receivables sold$186
 $182
 $200
 $197
$185
 $186
 $205
 $200
The following table shows sales and cash flows related to receivables sold.
Duke Energy Ohio Duke Energy IndianaDuke Energy Ohio Duke Energy Indiana
Years Ended December 31, Years Ended December 31,Years Ended December 31, Years Ended December 31,
(in millions)2015
 2014
 2013
 2015
 2014
 2013
2016
 2015
 2014
 2016
 2015
 2014
Sales                            
Receivables sold$1,963
 $2,246
 $2,251
 $2,627
 $2,913
 $2,985
$1,926
 $1,963
 $2,246
 $2,635
 $2,627
 $2,913
Loss recognized on sale9
 11
 12
 11
 11
 11
9
 9
 11
 11
 11
 11
Cash Flows                            
Cash proceeds from receivables sold1,995
 2,261
 2,220
 2,670
 2,932
 2,944
1,882
 1,995
 2,261
 2,583
 2,670
 2,932
Collection fees received1
 1
 1
 1
 1
 1
1
 1
 1
 1
 1
 1
Return received on retained interests3
 4
 5
 5
 6
 6
2
 3
 4
 5
 5
 6
Cash flows from the sales of receivables are reflected within Cash Flows From Operating Activities on Duke Energy Ohio’s and Duke Energy Indiana’s Consolidated Statements of Cash Flows.
Collection fees received in connection with servicing transferred accounts receivable are included in Operation, maintenance and other on Duke Energy Ohio’s and Duke Energy Indiana’s Consolidated Statements of Operations and Comprehensive Income. The loss recognized on sales of receivables is calculated monthly by multiplying receivables sold during the month by the required discount. The required discount is derived monthly utilizing a three-year weighted average formula that considers charge-off history, late charge history and turnover history on the sold receivables, as well as a component for the time value of money. The discount rate, or component for the time value of money, is the prior month-end LIBOR plus a fixed rate of 1.00 percent.

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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

18. COMMON STOCK
Basic Earnings Per Share (EPS) is computed by dividing net income attributable to Duke Energy common stockholders, adjusted for distributed and undistributed earnings allocated to participating securities, by the weighted average number of common stock outstanding during the period. Diluted EPS is computed by dividing net income attributable to Duke Energy common stockholders, as adjusted for distributed and undistributed earnings allocated to participating securities, by the diluted weighted average number of common stock outstanding during the period. Diluted EPS reflects the potential dilution that could occur if securities or other agreements to issue common stock, such as stock options, were exercised or settled. Duke Energy’s participating securities are restricted stock units that are entitled to dividends declared on Duke Energy common sharesstock during the restricted stock unit’s vesting periods.

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DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

The following table presents Duke Energy’s basic and diluted EPS calculations and reconciles the weighted average number of common stock outstanding to the diluted weighted average number of common stock outstanding.
Years Ended December 31,Years Ended December 31,
(in millions, except per share amounts)2015
 2014
 2013
2016
 2015
 2014
Income from continuing operations attributable to Duke Energy common stockholders excluding impact of participating securities$2,791
 $2,446
 $2,565
$2,567
 $2,640
 $2,529
Weighted average shares outstanding – basic694
 707
 706
691
 694
 707
Weighted average shares outstanding – diluted694
 707
 706
691
 694
 707
Earnings per share from continuing operations attributable to Duke Energy common stockholders          
Basic$4.02
 3.46
 3.64
$3.71
 3.80
 3.58
Diluted$4.02
 3.46
 3.63
$3.71
 3.80
 3.58
Potentially dilutive items excluded from the calculation(a)
2
 2
 2
2
 2
 2
Dividends declared per common share$3.24
 3.15
 3.09
$3.36
 3.24
 3.15
(a)Performance stock awards and certain stock options were not included in the dilutive securities calculation because either the performance measures related to the awards had not been met or the option exercise prices were greater than the average market price of the common shares during the presented periods.met.
Stock Issuance
In March 2016, Duke Energy marketed an equity offering of 10.6 million shares of common stock. In lieu of issuing equity at the time of the offering, Duke Energy entered into Equity Forwards with Barclays. The Equity Forwards required Duke Energy to either physically settle the transactions by issuing 10.6 million shares, or net settle in whole or in part through the delivery or receipt of cash or shares.
On October 5, 2016, following the close of the Piedmont acquisition, Duke Energy physically settled the Equity Forwards in full by delivering 10.6 million shares of common stock in exchange for net cash proceeds of approximately $723 million. The net proceeds were used to finance a portion of the Piedmont acquisition.
Accelerated Stock Repurchase Program
On April 6, 2015, Duke Energy entered into agreements with each of Goldman, Sachs & Co. and JPMorgan Chase Bank, National Association (the Dealers) to repurchase a total of $1.5 billion of Duke Energy common stock under an accelerated stock repurchase program (the ASR). Duke Energy made payments of $750 million to each of the Dealers and was delivered 16.6 million shares, with a total fair value of $1.275 billion, which represented approximately 85 percent of the total number of shares of Duke Energy common stock expected to be repurchased under the ASR. The $225 million unsettled portion met the criteria to be accounted for as a forward contract indexed to Duke Energy's stock and qualified as an equity instrument. The company recorded the $1.5 billion payment as a reduction to common stock as of April 6, 2015. In June 2015, the Dealers delivered 3.2 million additional shares to Duke Energy to complete the ASR. Approximately 19.8 million shares, in total, were delivered to Duke Energy and retired under the ASR at an average price of $75.75 per share. The final number of shares repurchased was based upon the average of the daily volume weighted average stock prices of Duke Energy’s common stock during the term of the program, less a discount.
19. SEVERANCE
DuringAs part of strategic planning processes launched in 2015, Duke Energy developedcontinued to implement targeted cost-savingscost savings initiatives during 2016 aimed at reducing operatingoperations and maintenance expense. The initiatives includeincluded efforts to reduce costs through the standardization of processes and systems, leveraging technology and workforce optimization throughout the company in ordercompany.
Also during 2016, Duke Energy and Piedmont announced severance plans covering certain eligible employees whose employment will be involuntarily terminated without cause as a result of Duke Energy's acquisition of Piedmont. These reductions are a part of the synergies expected to achieve sustainablebe realized with the acquisition. Refer to Note 2 for additional information on the Piedmont acquisition.

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DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

As part of the cost reductions. In conjunction with thesesavings initiatives and the Piedmont integration, voluntary and involuntary severance benefitsbenefit costs were extended toaccrued for a total of approximately 600 employees in 2016 and 900 employees.employees in 2015. The following table presents the direct and allocated severance and related expenses recorded by the Duke Energy Registrants associated with these initiatives.Registrants. Amounts are included within Operation, maintenance and other on the Consolidated Statements of Operations.
 Duke
 Duke
Duke
Duke
Duke
 Duke
 Duke
Duke
Duke
Duke
Duke
Energy
Progress
Energy
Energy
Energy
Energy
Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Year Ended December 31, 2016$118
$39
$40
$23
$17
$3
$7
Year Ended December 31, 2015$142
$93
$36
$28
$8
$2
$6
142
93
36
28
8
2
6
In conjunction with the 2012 merger with Progress Energy, Duke Energy and Progress Energy offered a voluntary severance plan to certain eligible employees. As of December 31, 2015, all plan participants have separated from the company. The following table presents direct and allocated severance and related expenses recorded by the Duke Energy Registrants associated with this plan. Amounts are included within Operation, maintenance and other on the Consolidated Statements of Operations. Amounts for 2014 and 2015 were not material.
  Duke
 Duke
Duke
Duke
Duke
 Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)
Energy(a)

Carolinas
Energy
Progress
Florida
Ohio
Indiana
Year Ended December 31, 2013$34
$8
$19
$14
$5
$2
$2
(a)Includes $5 million of accelerated stock award expense and $2 million of COBRA and health care reimbursement expense.
During 2013, in conjunction with the retirement of Crystal River Unit 3, severance benefits were made available to certain impacted unionized and non-unionized employees, to the extent that those employees did not find job opportunities at other locations. For the year ended December 31, 2013, Duke Energy Florida deferred $26 million of severance costs as a regulatory asset. Severance costs accrued in 2014 and 2015 related to this plan were not material. As of December 31, 2015, all plan participants have separated from the company. Refer to Note 4 for further discussion regarding Crystal River Unit 3.

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DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

The table below presents the severance liability for past and ongoing severance plans including the plans described above. Amounts for Duke Energy Indiana and Duke Energy Ohio are not material.
 Duke
 Duke
Duke
 Duke
 Duke
Duke
Duke
Energy
Progress
Energy
Energy
Duke
Energy
Progress
Energy
Energy
(in millions)Energy
Carolinas
Energy
Progress
Florida
Energy
Carolinas
Energy
Progress
Florida
Balance at December 31, 2014$28
$2
$18
$1
$17
Balance at December 31, 2015$136
$78
$23
$19
$4
Provision/Adjustments144
80
20
20

110
18
20
11
9
Cash Reductions(36)(4)(15)(2)(13)(167)(83)(29)(24)(5)
Balance at December 31, 2015$136
$78
$23
$19
$4
Balance at December 31, 2016$79
$13
$14
$6
$8
20. STOCK-BASED COMPENSATION
The Duke Energy Corporation 2015 Long-Term Incentive Plan (the 2015 Plan) provides for the grant of stock-based compensation awards to employees and outside directors. The 2015 Plan reserves 10 million shares of common stock for issuance. Duke Energy has historically issued new shares upon exercising or vesting of share-based awards. However, Duke Energy may use a combination of new share issuances and open market repurchases for share-based awards that are exercised or vest in the future. Duke Energy has not determined with certainty the amount of such new share issuances or open market repurchases.
The 2015 Plan supersedes the 2010 Long-Term Incentive Plan, as amended (the 2010 Plan), and the Progress Energy, Inc. 2007 Equity Incentive Plan (the Progress Plan). No additional grants will be made from the 2010 Plan and Progress Plan.
The following table summarizes the total expense recognized by the Duke Energy Registrants, net of tax, for stock-based compensation.
Years Ended December 31,Years Ended December 31,
(in millions)2015
 2014
 2013
2016
 2015
 2014
Duke Energy$38
 $38
 $52
$35
 $38
 $38
Duke Energy Carolinas14
 12
 13
12
 14
 12
Progress Energy14
 14
 23
12
 14
 14
Duke Energy Progress9
 9
 14
7
 9
 9
Duke Energy Florida5
 5
 9
5
 5
 5
Duke Energy Ohio2
 5
 4
2
 2
 5
Duke Energy Indiana4
 3
 4
3
 4
 3
 
Duke Energy's pretax stock-based compensation costs, the tax benefit associated with stock-based compensation expense and stock-based compensation costs capitalized are included in the following table.
Years Ended December 31,Years Ended December 31,
(in millions)2015
 2014
 2013
2016
 2015
 2014
Restricted stock unit awards$38
 $39
 $49
$36
 $38
 $39
Performance awards23
 22
 34
19
 23
 22
Stock options
 
 2
Pretax stock-based compensation cost$61
 $61
 $85
$55
 $61
 $61
Tax benefit associated with stock-based compensation expense$23
 $23
 $33
$20
 $23
 $23
Stock-based compensation costs capitalized3
 4
 3
2
 3
 4
STOCK OPTIONS
Stock options are granted with a maximum option term of 10 years and with an exercise price not less than the market price of Duke Energy's common stock on the grant date. Stock options outstanding at December 31, 2015, were not exercisable and the aggregate intrinsic value was not material. The following table summarizes information about stock options outstanding.
   Weighted Average
  
 Stock Options
 Exercise Price
 Weighted Average
  (in thousands)
 (per share)
 Remaining Life
Outstanding at December 31, 2014373
 $64
   
Exercised  (270) 62
   
Outstanding at December 31, 2015(a)
103
 69
 7 years, 2 months
(a)    Outstanding stock options all vested on January 1, 2016.

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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

The following table summarizes additional information related to stock options exercised and granted.
  Years Ended December 31,
 2015
 2014
 2013
Intrinsic value of options exercised (in millions)$5
 $6
 $26
Tax benefit related to options exercised (in millions)2
 2
 10
Cash received from options exercised (in millions)17
 25
 9
Stock options granted (in thousands)(a)

 
 310
(a)    Stock options granted in 2013 were expensed immediately.
RESTRICTED STOCK UNIT AWARDS
Restricted stock unit awards generally vest over periods from immediate to three years. Fair value amounts are based on the market price of Duke Energy's common stock on the grant date. The following table includes information related to restricted stock unit awards.
Years Ended December 31,Years Ended December 31,
2015
 2014
 2013
2016
 2015
 2014
Shares awarded (in thousands) 524
 557
 612
684
 524
 557
Fair value (in millions)$41
 $40
 $42
$52
 $41
 $40
The following table summarizes information about restricted stock unit awards outstanding.
  Weighted Average
  Weighted Average
Shares
 Grant Date Fair Value
Shares
 Grant Date Fair Value
(in thousands)
 (per share)
(in thousands)
 (per share)
Outstanding at December 31, 20141,080
 $69
Outstanding at December 31, 2015953
 $75
Piedmont transfers in113
 79
Granted524
 79
684
 75
Vested(602) 68
(525) 73
Forfeited(49) 73
(86) 76
Outstanding at December 31, 2015953
 75
Outstanding at December 31, 20161,139
 76
Restricted stock unit awards expected to vest924
 75
1,056
 76
The total grant date fair value of shares vested during the years ended December 31, 2016, 2015 and 2014 and 2013 was $38 million, $41 million $52 million and $50$52 million, respectively. At December 31, 2015,2016, Duke Energy had $19$27 million of unrecognized compensation cost, which is expected to be recognized over a weighted average period of one year, eleventen months.
PERFORMANCE AWARDS
Stock-based performance awards generally vest overafter three years if performance targets are met.
Performance awards granted in 2016, 2015 2014 and 20132014 contain market conditions based on the total shareholder return (TSR) of Duke Energy stock relative to a predefined peer group (relative TSR). These awards are valued using a path-dependent model that incorporates expected relative TSR into the fair value determination of Duke Energy’s performance-based share awards. The model uses three-year historical volatilities and correlations for all companies in the predefined peer group, including Duke Energy, to simulate Duke Energy’s relative TSR as of the end of the performance period. For each simulation, Duke Energy’s relative TSR associated with the simulated stock price at the end of the performance period plus expected dividends within the period results in a value per share for the award portfolio. The average of these simulations is the expected portfolio value per share. Actual life to date results of Duke Energy’s relative TSR for each grant are incorporated within the model.
For performance awards granted in 2015,2016, the model used a risk-feerisk-free interest rate of 1.00.9 percent, which reflects the yield on three-year Treasury bonds as of the grant date, and an expected volatility of 13.616.1 percent based on Duke Energy's historical volatility over three years using daily stock prices. The performance awards granted in 2016 also contain a performance condition based on Duke Energy's cumulative adjusted EPS.
The following table includes information related to stock-based performance awards.
Years Ended December 31,Years Ended December 31,
2015
 2014
 2013
2016
 2015
 2014
Shares awarded (in thousands)642
 542
 633
675
 642
 542
Fair value (in millions)$26
 $19
 $28
$25
 $26
 $19

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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

The following table summarizes information about stock-based performance awards outstanding and assumes payout at the maximum level.
  Weighted Average
  Weighted Average
Shares
 Grant Date Fair Value
Shares
 Grant Date Fair Value
(in thousands)
 (per share)
(in thousands)
 (per share)
Outstanding at December 31, 20141,627
 $42
Outstanding at December 31, 20151,697
 $40
Granted642
 41
675
 38
Vested(271) 51
(544) 46
Forfeited(301) 38
(104) 38
Outstanding at December 31, 20151,697
 40
Outstanding at December 31, 20161,724
 38
Stock-based performance awards expected to vest1,301
 40
1,199
 38

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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

The total grant date fair value of shares vested during the years ended December 31, 2016, 2015 and 2014 and 2013 was $25 million, $26 million $27 million and $42$27 million, respectively. At December 31, 2015,2016, Duke Energy had $22$24 million of unrecognized compensation cost, which is expected to be recognized over a weighted average period of one year, twoten months.
STOCK OPTIONS
Stock options are granted with a maximum option term of 10 years and with an exercise price not less than the market price of Duke Energy's common stock on the grant date. The following table summarizes information about stock options outstanding.
   Weighted Average
 Stock Options
 Exercise Price
 (in thousands)
 (per share)
Outstanding at December 31, 2015103
 $69
Exercised(103) 69
Outstanding at December 31, 2016
 
The following table summarizes additional information related to stock options exercised and granted.
 Years Ended December 31,
(in millions)2016
 2015
 2014
Intrinsic value of options exercised$1
 $5
 $6
Tax benefit related to options exercised
 2
 2
Cash received from options exercised7
 17
 25
21. EMPLOYEE BENEFIT PLANS
DEFINED BENEFIT RETIREMENT PLANS
Duke Energy maintains,or its affiliates maintain, and the Subsidiary Registrants participate in, qualified, non-contributory defined benefit retirement plans. The plans cover most U.S. employees using a cash balance formula. Under a cash balance formula, a plan participant accumulates a retirement benefit consisting of pay credits based upon a percentage of current eligible earnings based on age, or age and years of service and interest credits. Certain employees are covered under plans that use a final average earnings formula. Under these average earnings formulas, a plan participant accumulates a retirement benefit equal to the sum of percentages of their (i) highest three-year, four-year, or four-yearfive-year average earnings, (ii) highest three-year, four-year, or four-yearfive-year average earnings in excess of covered compensation per year of participation (maximum of 35 years), and/or (iii) highest three-year average earnings times years of participation in excess of 35 years. Duke Energy also maintains, and the Subsidiary Registrants participate in, non-qualified, non-contributory defined benefit retirement plans which cover certain executives. As of January 1, 2014, the qualified and non-qualified non-contributory defined benefit plans are closed to new and rehired non-union and certain unionized employees. Piedmont employees hired or rehired after December 31, 2007, cannot participate in the qualified non-contributory defined benefit plans, but are participants in the Money Purchase Pension (MPP) plan, discussed below.
Duke Energy uses a December 31 measurement date for its defined benefit retirement plan assets and obligations.
Net periodic benefit costs disclosed in the tables below represent the cost of the respective benefit plan for the periods presented. However, portions of the net periodic benefit costs disclosed in the tables below have been capitalized as a component of property, plant and equipment. Amounts presented in the tables below for the Subsidiary Registrants represent the amounts of pension and other post-retirement benefit cost allocated by Duke Energy for employees of the Subsidiary Registrants. Additionally, the Subsidiary Registrants are allocated their proportionate share of pension and post-retirement benefit cost for employees of Duke Energy’s shared services affiliate that provide support to the Subsidiary Registrants. These allocated amounts are included in the governance and shared service costs discussed in Note 13.
Duke Energy’s policy is to fund amounts on an actuarial basis to provide assets sufficient to meet benefit payments to be paid to plan participants. The following table includes information related to the Duke Energy Registrants’ contributions to its U.S. qualified defined benefit pension plans.
  Duke
   Duke
 Duke
 Duke
 Duke
  Duke
   Duke
 Duke
 Duke
 Duke
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions) Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Anticipated Contributions:
  
   
   
   
   
   
   
  
   
   
   
   
   
   
2017$160
 $45
 $45
 $25
 $20
 $4
 $9
Contributions Made:
  
   
   
   
   
   
   
2016$145
 $43
 $43
 $24
 $20
 $4
 $9
$155
 $43
 $43
 $24
 $20
 $5
 $9
Contributions Made:
  
   
   
   
   
   
   
2015$302
 $91
 $83
 $42
 $40
 $8
 $19
302
 91
 83
 42
 40
 8
 19
2014
 
 
 
 
 
 

 
 
 
 
 
 
2013250
 
 250
 63
 133
 
 

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DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

QUALIFIED PENSION PLANS
Components of Net Periodic Pension Costs
  Year Ended December 31, 2016
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)  Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Service cost  $147
 $48
 $42
 $24
 $19
 $4
 $9
Interest cost on projected benefit obligation  335
 86
 106
 49
 55
 19
 28
Expected return on plan assets  (519) (142) (168) (82) (84) (27) (42)
Amortization of actuarial loss  134
 33
 51
 23
 29
 4
 11
Amortization of prior service credit(17) (8) (3) (2) (1) 
 (1)
Settlement charge3
 
 
 
 
 
 
Other  8
 2
 3
 1
 1
 1
 1
Net periodic pension costs(a)(b)
$91

$19
 $31
 $13
 $19
 $1
 $6
  Year Ended December 31, 2015
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)  Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Service cost  $159
 $50
 $44
 $23
 $20
 $4
 $10
Interest cost on projected benefit obligation  324
 83
 104
 48
 54
 18
 27
Expected return on plan assets  (516) (139) (171) (79) (87) (26) (42)
Amortization of actuarial loss  166
 39
 65
 33
 31
 7
 13
Amortization of prior service (credit) cost(15) (7) (3) (2) (1) 
 1
Other  8
 2
 3
 1
 1
 
 1
Net periodic pension costs(a)(b)
$126
 $28
 $42
 $24
 $18
 $3
 $10
  Year Ended December 31, 2014
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)  Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Service cost  $135
 $41
 $40
 $21
 $20
 $4
 $9
Interest cost on projected benefit obligation  344
 85
 112
 54
 57
 20
 29
Expected return on plan assets  (511) (132) (173) (85) (85) (27) (41)
Amortization of actuarial loss  150
 36
 68
 32
 32
 4
 13
Amortization of prior service credit  (15) (8) (3) (2) (1) 
 
Other  8
 2
 3
 1
 1
 
 1
Net periodic pension costs(a)(b)
$111
 $24
 $47
 $21
 $24
 $1
 $11
  Year Ended December 31, 2013
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)  Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Service cost  $167
 $49
 $60
 $22
 $30
 $6
 $11
Interest cost on projected benefit obligation  320
 80
 116
 50
 53
 21
 28
Expected return on plan assets  (549) (148) (199) (94) (87) (31) (46)
Amortization of actuarial loss  244
 60
 101
 46
 49
 13
 24
Amortization of prior service (credit) cost   (11) (6) (4) (1) (2) 
 1
Other  7
 2
 2
 1
 1
 
 1
Net periodic pension costs(a)(b)
$178
 $37
 $76
 $24
 $44
 $9
 $19
(a)Duke Energy amounts exclude $8 million, $9 million $10 million, and $12$10 million for the years ended December 2016, 2015 2014, and 2013,2014, respectively, of regulatory asset amortization resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.
(b)Duke Energy Ohio amounts exclude $4 million, $5$4 million and $6$5 million for the years ended December 2016, 2015 2014, and 2013,2014, respectively, of regulatory asset amortization resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.

203210


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Amounts Recognized in Accumulated Other Comprehensive Income and Regulatory Assets
Year Ended December 31, 2015Year Ended December 31, 2016
  Duke
   Duke
 Duke
 Duke
 Duke
  Duke
   Duke
 Duke
 Duke
 Duke
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions) Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Regulatory assets, net increase$173
 $65
 $18
 $14
 $4
 $14
 $11
$214
 $4
 $34
 $18
 $16
 $2
 $9
Accumulated other comprehensive loss (income)                          
Deferred income tax expense$6
 
 5
 
 
 
 
$4
 
 
 
 
 
 
Actuarial losses arising during the year 4
 
 
 
 
 
 
Amortization of prior year service credit 1
 
 
 
 
 
 
Prior year service credit arising during the year(2) 
 
 
 
 
 
Amortization of prior year actuarial losses (11) 
 (4) 
 
 
 
(7) 
 (1) 
 
 
 
Transfer with the disposal group3
            
Reclassification of actuarial losses to regulatory assets (6) 
 
 
 
 
 
Net amount recognized in accumulated other comprehensive income $(3) $
 $1
 $
 $
 $
 $
$(5) $
 $(1) $
 $
 $
 $
Year Ended December 31, 2014Year Ended December 31, 2015
  Duke
   Duke
 Duke
 Duke
 Duke
  Duke
   Duke
 Duke
 Duke
 Duke
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions) Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Regulatory assets, net increase (decrease)$112
 $30
 $(73) $(17) $11
 $17
 $4
$173
 $65
 $18
 $14
 $4
 $14
 $11
Accumulated other comprehensive (income) loss   
   
   
   
   
   
   
  
   
   
   
   
   
   
Deferred income tax expense$(10) $
 $(2) $
 $
 $
 $
$6
 $
 $5
 $
 $
 $
 $
Actuarial losses arising during the year 29
 
 
 
 
 
 
4
 
 
 
 
 
 
Prior year service credit arising during the year
 
 
 
 
 
 
1
 
 
 
 
 
 
Amortization of prior year actuarial losses (9) 
 
 
 
 
 
(11) 
 (4) 
 
 
 
Transfer with the Midwest Generation Disposal Group3
 
 
 
 
 
 
Reclassification of actuarial losses to regulatory assets (1) 
 
 
 
 
 
(6) 
 
 
 
 
 
Net amount recognized in accumulated other comprehensive income $9
 $
 $(2) $
 $
 $
 $
$(3) $
 $1
 $
 $
 $
 $

204211


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Reconciliation of Funded Status to Net Amount Recognized
  Year Ended December 31, 2015
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)  Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Change in Projected Benefit Obligation  
  
                  
Obligation at prior measurement date  $8,107
 $2,053
 $2,557
 $1,187
 $1,335
 $469
 $673
Obligation transferred with the Disposal Group(83) 
 
 
 
 
 
Service cost  159
 50
 44
 23
 20
 4
 10
Interest cost  324
 83
 104
 48
 54
 18
 27
Actuarial gain(241) (53) (111) (46) (62) (9) (15)
Transfers  
 8
 4
 7
 (3) 8
 
Plan amendments  (6) 
 
 
 
 
 (4)
Benefits paid  (533) (146) (147) (76) (68) (37) (42)
Obligation at measurement date  $7,727
 $1,995
 $2,451
 $1,143
 $1,276
 $453
 $649
Accumulated Benefit Obligation at measurement date  $7,606
 $1,993
 $2,414
 $1,143
 $1,240
 $442
 $628
Change in Fair Value of Plan Assets  
  
   
   
   
   
   
   
Plan assets at prior measurement date  
$8,498
 $2,300
 $2,722
 $1,321
 $1,363
 $456
 $681
Plan assets transferred with the Disposal Group(81) 
 
 
 
 
 
Employer contributions302
 91
 83
 42
 40
 8
 19
Actual return on plan assets  (50) (10) (22) (10) (11) (2) (3)
Benefits paid  (533) (146) (147) (76) (68) (37) (42)
Transfers  
 8
 4
 7
 (3) 8
 
Plan assets at measurement date  $8,136
 $2,243
 $2,640
 $1,284
 $1,321
 $433
 $655
Funded status of plan  $409
 $248
 $189
 $141
 $45
 $(20) $6
Year Ended December 31, 2014Year Ended December 31, 2016
  Duke
   Duke
 Duke
 Duke
 Duke
  Duke
   Duke
 Duke
 Duke
 Duke
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions) Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Change in Projected Benefit Obligation
                      
                  
Obligation at prior measurement date $7,510
 $1,875
 $2,739
 $1,172
 $1,233
 $442
 $632
$7,727
 $1,995
 $2,451
 $1,143
 $1,276
 $453
 $649
Obligation assumed from acquisition352
 
 
 
 
 
 
Service cost 135
 41
 40
 21
 20
 4
 9
147
 48
 42
 24
 19
 4
 9
Interest cost 344
 85
 112
 54
 57
 20
 29
335
 86
 106
 49
 55
 19
 28
Actuarial loss(a)
618
 132
 211
 98
 105
 41
 41
Actuarial loss307
 46
 111
 52
 57
 13
 41
Transfers
 37
 (375) (61) (9) (6) 

 14
 (3) (3) 
 (3) 
Plan amendments (4) (1) 
 
 
 (1) 
(52) (3) 
 
 
 (3) (15)
Benefits paid (496) (116) (170) (97) (71) (31) (38)(679) (234) (195) (107) (84) (36) (54)
Impact of settlements(6) 
 
 
 
 
 
Obligation at measurement date $8,107
 $2,053
 $2,557
 $1,187
 $1,335
 $469
 $673
$8,131

$1,952

$2,512

$1,158

$1,323

$447

$658
Accumulated Benefit Obligation at measurement date
$7,966
 $2,052
 $2,519
 $1,187
 $1,297
 $459
 $645
$8,006
 $1,952
 $2,479
 $1,158
 $1,290
 $436
 $649
Change in Fair Value of Plan Assets
  
   
   
   
   
   
   
  
   
   
   
   
   
   
Plan assets at prior measurement date $8,142
 $2,162
 $2,944
 $1,330
 $1,299
 $448
 $654
$8,136
 $2,243
 $2,640
 $1,284
 $1,321
 $433
 $655
Assets received from acquisition343
 
 
 
 
 
 
Employer contributions155
 43
 43
 24
 20
 5
 9
Actual return on plan assets 852
 217
 300
 149
 144
 45
 65
582
 159
 190
 92
 95
 29
 47
Benefits paid (496) (116) (170) (97) (71) (31) (38)(679) (234) (195) (107)
(84)
(36)
(54)
Impact of settlements(6) 
 
 
 
 
 
Transfers
 37
 (352) (61) (9) (6) 

 14
 (3) (3)


(3)

Plan assets at measurement date $8,498
 $2,300
 $2,722
 $1,321
 $1,363
 $456
 $681
$8,531
 $2,225
 $2,675
 $1,290
 $1,352
 $428
 $657
Funded status of plan $391
 $247
 $165
 $134
 $28
 $(13) $8
$400
 $273
 $163
 $132
 $29
 $(19) $(1)

(a)Includes an increase in benefit obligation of $180 million as a result of changes in Duke Energy's mortality assumptions.

205212


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

  Year Ended December 31, 2015
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)  Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Change in Projected Benefit Obligation  
                   
Obligation at prior measurement date  $8,107
 $2,053
 $2,557
 $1,187
 $1,335
 $469
 $673
Obligation transferred with Midwest Generation Disposal Group(83) 
 
 
 
 
 
Service cost  159
 50
 44
 23
 20
 4
 10
Interest cost  324
 83
 104
 48
 54
 18
 27
Actuarial gain(241) (53) (111) (46) (62) (9) (15)
Transfers  
 8
 4
 7
 (3) 8
 
Plan amendments  (6) 
 
 
 
 
 (4)
Benefits paid  (533) (146) (147) (76) (68) (37) (42)
Obligation at measurement date  $7,727
 $1,995
 $2,451
 $1,143
 $1,276
 $453
 $649
Accumulated Benefit Obligation at measurement date  
$7,606
 $1,993
 $2,414
 $1,143
 $1,240
 $442
 $628
Change in Fair Value of Plan Assets  
             
Plan assets at prior measurement date  $8,498
 $2,300
 $2,722
 $1,321
 $1,363
 $456
 $681
Obligation transferred with Midwest Generation Disposal Group(81) 
 
 
 
 
 
Employer contributions302
 91
 83
 42
 40
 8
 19
Actual return on plan assets  (50) (10) (22) (10) (11) (2) (3)
Benefits paid  (533) (146) (147) (76) (68) (37) (42)
Transfers  
 8
 4
 7
 (3) 8
 
Plan assets at measurement date  $8,136
 $2,243
 $2,640
 $1,284
 $1,321
 $433
 $655
Funded status of plan  $409
 $248
 $189
 $141
 $45
 $(20) $6

213


PART II
DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Amounts Recognized in the Consolidated Balance Sheets
December 31, 2015December 31, 2016
  Duke
   Duke
 Duke
 Duke
 Duke
  Duke
   Duke
 Duke
 Duke
 Duke
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions) Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Prefunded pension(a)
$474
 $252
 $232
 $145
 $84
 $1
 $6
$518
 $273
 $225
 $132
 $91
 $6
 $
Noncurrent pension liability(b)
$65
 $4
 $43
 $4
 $39
 $21
 $
$118
 $
 $62
 $
 $62
 $25
 $1
Net asset recognized $409
 $248
 $189
 $141
 $45
 $(20) $6
$400

$273

$163

$132

$29

$(19)
$(1)
Regulatory assets $1,884
 $472
 $771
 $360
 $410
 $79
 $162
$2,098
 $476
 $805
 $378
 $426
 $81
 $171
Accumulated other comprehensive (income) loss   
   
   
   
   
   
   
  
   
   
   
   
   
   
Deferred income tax asset $(45) $
 $(6) $
 $
 $
 $
$(41) $
 $(6) $
 $
 $
 $
Prior service credit (4) 
 
 
 
 
 
(6) 
 
 
 
 
 
Net actuarial loss 130
 
 17
 
 
 
 
123
 
 16
 
 
 
 
Net amounts recognized in accumulated other comprehensive loss(c)
$81
 $
 $11
 $
 $
 $
 $
$76
 $
 $10
 $
 $
 $
 $
Amounts to be recognized in net periodic pension costs in the next year   
   
   
   
   
   
   
  
   
   
   
   
   
   
Unrecognized net actuarial loss $132
 $31
 $59
 $25
 $31
 $4
 $11
$147
 $31
 $52
 $23
 $29
 $5
 $8
Unrecognized prior service credit
(16) (8) (3) (2) (1) 
 
(24) (8) (3) (2) (1) 
 (2)
December 31, 2014December 31, 2015
  Duke
   Duke
 Duke
 Duke
 Duke
  Duke
   Duke
 Duke
 Duke
 Duke
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions) Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Prefunded pension(a)
$441
 $247
 $165
 $134
 $28
 $
 $8
$474
 $252
 $232
 $145
 $84
 $1
 $6
Noncurrent pension liability(b)
$50
 $
 $
 $
 $
 $13
 $
$65
 $4
 $43
 $4
 $39
 $21
 $
Net asset recognized $391
 $247
 $165
 $134
 $28
 $(13) $8
$409
 $248
 $189
 $141
 $45
 $(20) $6
Regulatory assets $1,711
 $407
 $753
 $346
 $406
 $65
 $151
$1,884
 $472
 $771
 $360
 $410
 $79
 $162
Accumulated other comprehensive (income) loss   
   
   
   
   
   
   
  
     
   
   
   
   
Deferred income tax asset $(51) $
 $(11) $
 $
 $
 $
$(45) $
 $(6) $
 $
 $
 $
Prior service credit (5) 
 
 
 
 
 
(4) 
 
 
 
 
 
Net actuarial loss 140
 
 21
 
 
 
 
130
 
 17
 
 
 
 
Net amounts recognized in accumulated other comprehensive loss(c)
$84
 $
 $10
 $
 $
 $
 $
$81
 $
 $11
 $
 $
 $
 $
(a)Included in Other within Investments and Other Assets on the Consolidated Balance Sheets.
(b)Included in Accrued pension and other post-retirement benefit costs on the Consolidated Balance Sheets.
(c)Excludes accumulated other comprehensive income of $13 million and $22 million as of December 31, 2015, and 2014, respectively, net of tax, associated with a Brazilian retirement plan.

214


PART II
DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Information for Plans with Accumulated Benefit Obligation in Excess of Plan Assets
  December 31, 2016
   Duke
Duke
 Duke
Progress
Energy
Energy
(in millions)  Energy
Energy
Florida
Ohio
Projected benefit obligation  $1,299
$665
$665
$311
Accumulated benefit obligation  1,239
633
633
299
Fair value of plan assets  1,182
604
604
286
  December 31, 2015
   Duke
Duke
 Duke
Progress
Energy
Energy
(in millions)  Energy
Energy
Florida
Ohio
Projected benefit obligation  $1,216
$611
$611
$307
Accumulated benefit obligation  1,158
575
575
298
Fair value of plan assets  1,151
574
574
289

206


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

  December 31, 2014
   Duke
 Duke
 Energy
(in millions)  Energy
 Ohio
Projected benefit obligation  $702
 $315
Accumulated benefit obligation  672
 306
Fair value of plan assets  652
 302
Assumptions Used for Pension Benefits Accounting
The discount rate used to determine the current year pension obligation and following year’s pension expense is based on a bond selection-settlement portfolio approach. This approach develops a discount rate by selecting a portfolio of high quality corporate bonds that generate sufficient cash flow to provide for projected benefit payments of the plan. The selected bond portfolio is derived from a universe of non-callable corporate bonds rated Aa quality or higher. After the bond portfolio is selected, a single interest rate is determined that equates the present value of the plan’s projected benefit payments discounted at this rate with the market value of the bonds selected.
The average remaining service period of active covered employees is sevennine years for Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio and Duke Energy Indiana.
The following tables present the assumptions or range of assumptions used for pension benefit accounting.
 December 31, December 31,
 2015 2014 2013 2016 2015 2014
Benefit Obligations                              
Discount rate    4.40%   4.10%   4.70%   4.10%   4.40%   4.10%
Salary increase  4.00%-4.40% 4.00%-4.40% 4.00%-4.40% 4.00%-4.50% 4.00%-4.40% 4.00%-4.40%
Net Periodic Benefit Cost                              
Discount rate    4.10%   4.70% 

 4.10%   4.40%   4.10% 

 4.70%
Salary increase
 4.00%-4.40% 4.00%-4.40% 4.00%-4.30% 4.00%-4.40% 4.00%-4.40% 4.00%-4.40%
Expected long-term rate of return on plan assets    6.50%   6.75% 

 7.75% 6.50%-6.75%   6.50% 

 6.75%
Expected Benefit Payments
 Duke
 Duke
Duke
Duke
Duke
 Duke
 Duke
Duke
Duke
Duke
Duke
Energy
Progress
Energy
Energy
Energy
Energy
Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions) Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Years ending December 31,     
2016$628
$189
$164
$91
$71
$35
$48
2017639
199
167
92
73
35
47
$585
$162
$159
$84
$74
$35
$49
2018640
203
169
92
75
34
47
595
171
159
83
75
33
49
2019643
202
171
91
77
34
47
613
177
164
86
76
33
48
2020641
201
174
92
80
35
47
632
186
171
90
79
34
47
2021 – 20253,053
906
869
438
420
171
230
2021637
181
175
92
81
35
48
2022 – 20263,099
867
890
455
425
161
219

207215


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

NON-QUALIFIED PENSION PLANS
Components of Net Periodic Pension Costs
  Year Ended December 31, 2016
  Duke
 Duke
Duke
Duke
Duke
 Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)  Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Service cost  $2
$
$
$
$
$
$
Interest cost on projected benefit obligation  14
1
5
1
2


Amortization of actuarial loss  8
1
1
1
1


Amortization of prior service credit  (1)





Net periodic pension costs  $23
$2
$6
$2
$3
$
$
  Year Ended December 31, 2015
  Duke
 Duke
Duke
Duke
Duke
 Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)  Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Service cost  $3
$
$1
$
$
$
$
Interest cost on projected benefit obligation  13
1
4
1
2


Amortization of actuarial loss  6

2
1
2

1
Amortization of prior service credit  (1)
(1)



Net periodic pension costs  $21
$1
$6
$2
$4
$
$1
  Year Ended December 31, 2014
  Duke
 Duke
Duke
Duke
Duke
 Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)  Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Service cost  $3
$
$1
$1
$
$
$
Interest cost on projected benefit obligation  14
1
5
1
2


Amortization of actuarial loss  3

2




Amortization of prior service credit  (1)
(1)



Net periodic pension costs  $19
$1
$7
$2
$2
$
$
  Year Ended December 31, 2013
  Duke
 Duke
Duke
Duke
Duke
 Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)  Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Service cost  $3
$
$1
$1
$
$
$
Interest cost on projected benefit obligation  13
1
7
1
1


Amortization of actuarial loss  5

3
1
1


Amortization of prior service credit  (1)
(1)



Net periodic pension costs  $20
$1
$10
$3
$2
$
$


208216


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Amounts Recognized in Accumulated Other Comprehensive Income and Regulatory Assets and Liabilities
Year Ended December 31, 2015Year Ended December 31, 2016
 Duke
 Duke
Duke
Duke
Duke
 Duke
 Duke
Duke
Duke
Duke
Duke
Energy
Progress
Energy
Energy
Energy
Energy
Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions) Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Regulatory assets, net (decrease) increase $(13)$2
$(16)$(1)$(15)$
$(1)$(3)$(2)$2
$1
$1
$
$(1)
Regulatory liabilities, net increase (decrease)$
$
$
$
$
$
$
Accumulated other comprehensive (income) loss   
  
  
  
  
  
  
  
  
  
  
  
  
  
Deferred income tax benefit $(7)$
$(5)$
$
$
$
$
$
$
$
$
$
$
Amortization of prior service credit1






Actuarial gains arising during the year 17

13




Prior service credit arising during the year(1)





Actuarial loss arising during the year 1






Net amount recognized in accumulated other comprehensive loss (income) $11
$
$8
$
$
$
$
$
$
$
$
$
$
$
Year Ended December 31, 2014Year Ended December 31, 2015
 Duke
 Duke
Duke
Duke
Duke
 Duke
 Duke
Duke
Duke
Duke
Duke
Energy
Progress
Energy
Energy
Energy
Energy
Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions) Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Regulatory assets, net increase $44
$1
$14
$4
$19
$1
$2
Regulatory liabilities, net decrease $(7)$
$
$
$
$
$
Regulatory assets, net (decrease) increase $(13)$2
$(16)$(1)$(15)$
$(1)
Accumulated other comprehensive (income) loss   
  
  
  
  
  
  
 
Deferred income tax benefit $4
$
$5
$
$
$
$
$(7)$
$(5)$
$
$
$
Amortization of prior service credit1






Actuarial gains arising during the year (9)
(11)



17

13




Net amount recognized in accumulated other comprehensive loss (income) $(5)$
$(6)$
$
$
$
$11
$
$8
$
$
$
$
Reconciliation of Funded Status to Net Amount Recognized

  Year Ended December 31, 2015
  Duke
 Duke
Duke
Duke
Duke
 Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)  Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Change in Projected Benefit Obligation  
  
  
  
  
  
  
  
Obligation at prior measurement date  $337
$16
$116
$35
$61
$4
$5
Service cost  3

1




Interest cost  13
1
4
1
2


Actuarial losses (gains)10
1
(1)
(14)

Transfers  4






Benefits paid  (26)(2)(8)(3)(3)

Obligation at measurement date  $341
$16
$112
$33
$46
$4
$5
Accumulated Benefit Obligation at measurement date  
$336
$16
$112
$33
$46
$4
$5
Change in Fair Value of Plan Assets  
  
  
  
  
  
  
  
Plan assets at prior measurement date  







Benefits paid  (26)(2)(8)(3)(3)

Employer contributions  26
2
8
3
3


Plan assets at measurement date  $
$
$
$
$
$
$

209217


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Reconciliation of Funded Status to Net Amount Recognized
  Year Ended December 31, 2016
  Duke
 Duke
Duke
Duke
Duke
 Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)  Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Change in Projected Benefit Obligation  
  
  
  
  
  
  
  
Obligation at prior measurement date  $341
$16
$112
$33
$46
$4
$5
Obligation assumed from acquisition5






Service cost ��2






Interest cost  14
1
5
1
2


Actuarial losses (gains)4
(1)5
2
1

(2)
Plan amendments(2)





Benefits paid  (32)(2)(8)(3)(3)

Obligation at measurement date  $332
$14
$114
$33
$46
$4
$3
Accumulated Benefit Obligation at measurement date  
$332
$14
$114
$33
$46
$4
$3
Change in Fair Value of Plan Assets  
  
  
  
  
  
  
  
Benefits paid  $(32)$(2)$(8)$(3)$(3)$
$
Employer contributions  32
2
8
3
3


Plan assets at measurement date  $
$
$
$
$
$
$
  Year Ended December 31, 2014
  Duke
 Duke
Duke
Duke
Duke
 Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)  Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Change in Projected Benefit Obligation  
    
  
  
  
  
  
Obligation at prior measurement date  $304
$15
$140
$34
$39
$3
$5
Service cost  3

1
1



Interest cost  14
1
5
1
2


Actuarial losses(a)  
43
2
11
2
20
1
1
Settlements  






Plan amendments  






Transfers  

(32)
4


Benefits paid  (27)(2)(9)(3)(4)
(1)
Obligation at measurement date  $337
$16
$116
$35
$61
$4
$5
Accumulated Benefit Obligation at measurement date  $333
$15
$116
$35
$61
$4
$5
Change in Fair Value of Plan Assets    
  
  
  
  
  
  
Plan assets at prior measurement date  






Benefits paid  (27)(2)(9)(3)(4)
(1)
Employer contributions  27
2
9
3
4

1
Plan assets at measurement date  $
$
$
$
$
$
$
(a)Includes an increase in benefit obligation of $21 million as a result of changes in Duke Energy's mortality assumptions.
Amounts Recognized in the Consolidated Balance Sheets
  Year Ended December 31, 2015
  Duke
 Duke
Duke
Duke
Duke
 Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)  Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Change in Projected Benefit Obligation  
    
  
  
  
  
  
Obligation at prior measurement date  $337
$16
$116
$35
$61
$4
$5
Service cost  3

1




Interest cost  13
1
4
1
2


Actuarial losses (gains)10
1
(1)
(14)

Transfers  4






Benefits paid  (26)(2)(8)(3)(3)

Obligation at measurement date  $341
$16
$112
$33
$46
$4
$5
Accumulated Benefit Obligation at measurement date  $336
$16
$112
$33
$46
$4
$5
Change in Fair Value of Plan Assets    
  
  
  
  
  
  
Plan assets at prior measurement date  






Benefits paid  (26)(2)(8)(3)(3)

Employer contributions  26
2
8
3
3


Plan assets at measurement date  $
$
$
$
$
$
$
  December 31, 2015
  Duke
 Duke
Duke
Duke
Duke
 Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)  Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Current pension liability(a)
$27
$2
$8
$3
$3
$
$
Noncurrent pension liability(b)
314
14
104
30
43
4
5
Total accrued pension liability  $341
$16
$112
$33
$46
$4
$5
Regulatory assets  $76
$7
$16
$6
$10
$1
$1
Accumulated other comprehensive (income) loss     
  
  
  
  
  
Deferred income tax liability  $(3)$
$(3)$
$
$
$
Net actuarial loss  9

9




Net amounts recognized in accumulated other comprehensive income$6
$
$6
$
$
$
$
Amounts to be recognized in net periodic pension expense in the next year     
  
  
  
  
  
Unrecognized net actuarial loss  $8
$
$1
$
$
$
$
Unrecognized prior service credit  
(1)







210218


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Amounts Recognized in the Consolidated Balance Sheets
  December 31, 2016
  Duke
 Duke
Duke
Duke
Duke
 Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)  Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Current pension liability(a)
$28
$2
$8
$2
$3
$
$
Noncurrent pension liability(b)
304
12
106
31
43
4
3
Total accrued pension liability  $332
$14
$114
$33
$46
$4
$3
Regulatory assets  $73
$5
$18
$7
$11
$1
$
Accumulated other comprehensive (income) loss     
  
  
  
  
  
Deferred income tax asset$(3)$
$(3)$
$
$
$
Prior service credit(1)





Net actuarial loss  10

9




Net amounts recognized in accumulated other comprehensive income$6
$
$6
$
$
$
$
Amounts to be recognized in net periodic pension expense in the next year     
  
  
  
  
  
Unrecognized net actuarial loss  $7
$
$2
$1
$1
$
$
Unrecognized prior service credit  
(2)





  December 31, 2015
  Duke
 Duke
Duke
Duke
Duke
 Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)  Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Current pension liability(a)
$27
$2
$8
$3
$3
$
$
Noncurrent pension liability(b)
314
14
104
30
43
4
5
Total accrued pension liability  $341
$16
$112
$33
$46
$4
$5
Regulatory assets  $76
$7
$16
$6
$10
$1
$1
Accumulated other comprehensive (income) loss    
  
  
  
  
  
  
Deferred income tax asset$(3)$
$(3)$
$
$
$
Net actuarial loss9

9




Net amounts recognized in accumulated other comprehensive loss  $6
$
$6
$
$
$
$
  December 31, 2014
  Duke
 Duke
Duke
Duke
Duke
 Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)  Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Current pension liability(a)
$27
$2
$8
$3
$4
$
$
Noncurrent pension liability(b)
310
14
108
32
57
4
5
Total accrued pension liability  $337
$16
$116
$35
$61
$4
$5
Regulatory assets  $89
$5
$32
$7
$25
$1
$2
Regulatory liabilities  $
$
$
$
$
$
$
Accumulated other comprehensive (income) loss    
  
  
  
  
  
  
Deferred income tax asset  $4
$
$2
$
$
$
$
Prior service credit  (1)





Net actuarial gain  (8)
(4)



Net amounts recognized in accumulated other comprehensive loss  $(5)$
$(2)$
$
$
$
(a)    Included in Other within Current Liabilities on the Consolidated Balance Sheets.
(a)Included in Other within Current Liabilities on the Consolidated Balance Sheets.
(b)Included in Accrued pension and other post-retirement benefit costs on the Consolidated Balance Sheets.
Information for Plans with Accumulated Benefit Obligation in Excess of Plan Assets
  December 31, 2016
  Duke
 Duke
Duke
Duke
Duke
 Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)  Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Projected benefit obligation  $332
$14
$114
$33
$46
$4
$3
Accumulated benefit obligation  332
14
114
33
46
4
3
  December 31, 2015
  Duke
 Duke
Duke
Duke
Duke
 Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)  Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Projected benefit obligation  $341
$16
$112
$33
$46
$4
$5
Accumulated benefit obligation  336
16
112
33
46
4
5
  December 31, 2014
  Duke
 Duke
Duke
Duke
Duke
 Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)  Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Projected benefit obligation  $337
$16
$116
$35
$61
$4
$5
Accumulated benefit obligation  333
15
116
35
61
4
5

219


PART II
DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Assumptions Used for Pension Benefits Accounting
The discount rate used to determine the current year pension obligation and following year’s pension expense is based on a bond selection-settlement portfolio approach. This approach develops a discount rate by selecting a portfolio of high quality corporate bonds that generate sufficient cash flow to provide for projected benefit payments of the plan. The selected bond portfolio is derived from a universe of non-callable corporate bonds rated Aa quality or higher. After the bond portfolio is selected, a single interest rate is determined that equates the present value of the plan’s projected benefit payments discounted at this rate with the market value of the bonds selected.
The average remaining service period of active covered employees is 10 years for Duke Energy, and Progress Energy, seven years for Duke Energy Carolinas, Duke Energy Ohio and Duke Energy Indiana, 14 years for Progress Energy, 12 years for Duke Energy Progress and 1715 years for Duke Energy Florida.
The following tables present the assumptions used for pension benefit accounting.
 December 31, December 31,
 2015
 2014
 2013
 2016
 2015
 2014
Benefit Obligations
   
   
   
   
   
   
Discount rate  4.40% 4.10% 4.70% 4.10% 4.40% 4.10%
Salary increase  4.40% 4.40% 4.40% 4.40% 4.40% 4.40%
Net Periodic Benefit Cost
   
   
   
   
   
   
Discount rate  4.10% 4.70% 4.10% 4.40% 4.10% 4.70%
Salary increase
 4.40% 4.40% 4.30% 4.40% 4.40% 4.40%

211


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

Expected Benefit Payments
 Duke
 Duke
Duke
Duke
Duke
 Duke
 Duke
Duke
Duke
Duke
Duke
Energy
Progress
Energy
Energy
Energy
Energy
Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions) Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Years ending December 31,     
2016$28
$2
$8
$3
$3
$
$
201729
2
8
3
3


$29
$2
$8
$3
$3
$
$
201825
2
8
3
3


25
2
8
3
3


201926
2
8
3
3


25
2
8
2
3


202025
2
8
3
3

1
24
2
8
2
3


202124
1
8
2
3


2021 - 2025126
9
38
12
16
1
2
111
5
36
11
15
1
1
OTHER POST-RETIREMENT BENEFIT PLANS
Duke Energy provides, and the Subsidiary Registrants participate in, some health care and life insurance benefits for retired employees on a contributory and non-contributory basis. Employees are eligible for these benefits if they have met age and service requirements at retirement, as defined in the plans. The health care benefits include medical, dental and prescription drug coverage and are subject to certain limitations, such as deductibles and co-payments.
Duke Energy did not make any pre-funding contributions to its other post-retirement benefit plans during the years ended December 31, 2016, 2015 2014 or 2013.2014.
Components of Net Periodic Other Post-Retirement Benefit Costs
Year Ended December 31, 2015Year Ended December 31, 2016
  Duke
   Duke
 Duke
 Duke
 Duke
  Duke
   Duke
 Duke
 Duke
 Duke
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions) Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Service cost $6
 $1
 $1
 $1
 $1
 $
 $1
$3
 $1
 $1
 $
 $1
 $
 $
Interest cost on accumulated post-retirement benefit obligation 36
 9
 15
 8
 7
 2
 4
35
 8
 15
 8
 7
 1
 4
Expected return on plan assets (13) (8) 
 
 
 (1) (1)(12) (8) 
 
 
 
 (1)
Amortization of actuarial loss (gain) 16
 (2) 28
 18
 10
 (2) (2)6
 (3) 22
 13
 9
 (2) (1)
Amortization of prior service credit (140) (14) (102) (68) (35) 
 
(141) (14) (103) (68) (35) 
 (1)
Net periodic post-retirement benefit costs(a)(b)
$(95) $(14) $(58) $(41) $(17) $(1) $2
$(109) $(16) $(65) $(47) $(18) $(1) $1

  Year Ended December 31, 2014
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)  Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Service cost  $10
 $2
 $4
 $1
 $3
 $
 $1
Interest cost on accumulated post-retirement benefit obligation  49
 12
 22
 11
 12
 2
 5
Expected return on plan assets  (13) (9) 
 
 
 
 (1)
Amortization of actuarial loss (gain)  39
 3
 42
 31
 10
 (2) 
Amortization of prior service credit  (125) (11) (95) (73) (21) 
 
Net periodic post-retirement benefit costs(a)(b)
$(40) $(3) $(27) $(30) $4
 $
 $5

212220


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Year Ended December 31, 2013Year Ended December 31, 2015
  Duke
   Duke
 Duke
 Duke
 Duke
  Duke
   Duke
 Duke
 Duke
 Duke
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions) Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Service cost $24
 $2
 $18
 $9
 $7
 $1
 $1
$6
 $1
 $1
 $1
 $1
 $
 $1
Interest cost on accumulated post-retirement benefit obligation 68
 13
 41
 22
 16
 2
 5
36
 9
 15
 8
 7
 2
 4
Expected return on plan assets (14) (11) 
 
 
 (1) (1)(13) (8) 
 
 
 (1) (1)
Amortization of actuarial loss (gain) 52
 3
 57
 34
 16
 (1) 1
16
 (2) 28
 18
 10
 (2) (2)
Amortization of prior service credit (41) (7) (30) (20) (6) (1) 
(140) (14) (102) (68) (35) 
 
Net periodic post-retirement benefit costs(a)(b)
$89
 $
 $86
 $45
 $33
 $
 $6
$(95) $(14) $(58) $(41) $(17) $(1) $2
  Year Ended December 31, 2014
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)  Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Service cost  $10
 $2
 $4
 $1
 $3
 $
 $1
Interest cost on accumulated post-retirement benefit obligation  49
 12
 22
 11
 12
 2
 5
Expected return on plan assets  (13) (9) 
 
 
 
 (1)
Amortization of actuarial loss (gain)  39
 3
 42
 31
 10
 (2) 
Amortization of prior service credit  (125) (11) (95) (73) (21) 
 
Net periodic post-retirement benefit costs(a)(b)
$(40) $(3) $(27) $(30) $4
 $
 $5
(a)Duke Energy amounts exclude $8 million, $10 million $9 million, and $8$9 million for the years ended December 2016, 2015 2014, and 2013,2014, respectively, of regulatory asset amortization resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.
(b)Duke Energy Ohio amounts exclude $3$2 million, $2$3 million and $2 million for the years ended December 2016, 2015 2014, and 2013,2014, respectively, of regulatory asset amortization resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.
Amounts Recognized in Accumulated Other Comprehensive Income and Regulatory Assets and Liabilities
  Year Ended December 31, 2015
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)  Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Regulatory assets, net increase (decrease)$1
 $
 $1
 $
 $1
 $
 $(7)
Regulatory liabilities, net increase (decrease)  $(92) $(8) $(71) $(36) $(35) $2
 $(8)
Accumulated other comprehensive (income) loss    
   
     
   
   
   
Deferred income tax benefit   $2
 $
 $(1) $
 $
 $
 $
Actuarial losses (gains) arising during the year  (5) 
 2
 
 
 
 
Transfer with the disposal group(3) 
 
 
 
 
 
Amortization of prior year prior service credit  3
 
 (1) 
 
 
 
Net amount recognized in accumulated other comprehensive income  $(3) $
 $
 $
 $
 $
 $

  Year Ended December 31, 2014
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)  Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Regulatory assets, net increase (decrease)$162
 $34
 $129
 $97
 $(4) $
 $(7)
Regulatory liabilities, net increase (decrease)  $249
 $76
 $122
 $61
 $61
 $(2) $14
Accumulated other comprehensive (income) loss    
   
     
   
   
   
Deferred income tax benefit   $1
 $
 $1
 $
 $
 $
 $
Actuarial losses (gains) arising during the year  1
 
 (2) 
 
 
 
Prior year service credit arising during the year  (6) 
 
 
 
 
 
Amortization of prior year prior service credit 2
 
 
 
 
 
 
Net amount recognized in accumulated other comprehensive income  $(2) $
 $(1) $
 $
 $
 $

213221


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Reconciliation of Funded Status to AccruedAmounts Recognized in Accumulated Other Post-Retirement Benefit CostsComprehensive Income and Regulatory Assets and Liabilities
  Year Ended December 31, 2016
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)  Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Regulatory assets, net increase (decrease)$53
 $
 $47
 $38
 $9
 $
 $(6)
Regulatory liabilities, net increase (decrease)  $(114) $(22) $(51) $(25) $(26) $(2) $(12)
Accumulated other comprehensive (income) loss               
Deferred income tax benefit   $(2) $
 $
 $
 $
 $
 $
Actuarial losses arising during the year  3
 
 
 
 
 
 
Amortization of prior year prior service credit  1
 
 1
 
 
 
 
Net amount recognized in accumulated other comprehensive income  $2
 $
 $1
 $
 $
 $
 $
  Year Ended December 31, 2015
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)  Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Regulatory assets, net increase (decrease)$1
 $
 $1
 $
 $1
 $
 $(7)
Regulatory liabilities, net increase (decrease)  $(92) $(8) $(71) $(36) $(35) $2
 $(8)
Accumulated other comprehensive (income) loss               
Deferred income tax benefit   $2
 $
 $(1) $
 $
 $
 $
Actuarial losses (gains) arising during the year  (5) 
 2
 
 
 
 
Transfer with the Midwest Generation Disposal Group(3) 
 
 
 
 
 
Amortization of prior year prior service credit 3
 
 (1) 
 
 
 
Net amount recognized in accumulated other comprehensive income  $(3) $
 $
 $
 $
 $
 $
  Year Ended December 31, 2015
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)  Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Change in Projected Benefit Obligation  
  
                  
Accumulated post-retirement benefit obligation at prior measurement date  $916
 $220
 $379
 $207
 $170
 $39
 $96
Service cost  6
 1
 1
 1
 1
 
 1
Interest cost  36
 9
 15
 8
 7
 2
 4
Plan participants' contributions  20
 4
 7
 4
 3
 1
 2
Actuarial (gains) losses(39) (18) (1) (13) 11
 (3) 1
Transfers  
 2
 
 
 
 
 
Plan amendments  (9) 
 
 
 
 (1) (4)
Benefits paid  (100) (18) (47) (19) (28) (3) (13)
Obligation transferred with the Disposal Group(3) 
 
 
 
 
 
Accrued retiree drug subsidy  1
 
 
 
 
 
 
Accumulated post-retirement benefit obligation at measurement date  $828
 $200
 $354
 $188
 $164
 $35
 $87
Change in Fair Value of Plan Assets  
  
   
   
   
   
   
   
Plan assets at prior measurement date  
$227
 $145
 $
 $(1) $
 $8
 $23
Actual return on plan assets  (1) (1) 1
 1
 1
 
 (1)
Benefits paid  (100) (18) (47) (19) (28) (3) (13)
Employer contributions  62
 4
 39
 15
 25
 2
 8
Plan participants' contributions  20
 4
 7
 4
 3
 1
 2
Plan assets at measurement date  $208
 $134
 $
 $
 $1
 $8
 $19

  Year Ended December 31, 2014
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)  Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Change in Projected Benefit Obligation  
                    
Accumulated post-retirement benefit obligation at prior measurement date  $1,106
 $265
 $533
 $233
 $253
 $42
 $118
Service cost  10
 2
 4
 1
 3
 
 1
Interest cost  49
 12
 22
 11
 12
 2
 5
Plan participants' contributions  25
 10
 8
 4
 4
 
 2
Actuarial gains(a)
(87) (35) (19) (21) 
 
 (20)
Transfers  
 1
 (48) (2) 
 (1) 
Plan amendments  (85) (4) (77) 
 (78) (1) 
Benefits paid  (103) (31) (44) (19) (24) (3) (10)
Accrued retiree drug subsidy  1
 
 
 
 
 
 
Accumulated post-retirement benefit obligation at measurement date  $916
 $220
 $379
 $207
 $170
 $39
 $96
Change in Fair Value of Plan Assets  
  
   
   
   
   
   
   
Plan assets at prior measurement date  $214
 $143
 $
 $
 $
 $8
 $18
Actual return on plan assets  18
 12
 
 
 
 
 2
Benefits paid  (103) (31) (44) (19) (24) (3) (10)
Transfers
 (1) 
 
 
 
 
Employer contributions  73
 12
 36
 14
 20
 3
 11
Plan participants' contributions  25
 10
 8
 4
 4
 
 2
Plan assets at measurement date  $227
 $145
 $
 $(1) $
 $8
 $23
(a)Includes an increase in benefit obligation of $7 million as a result of changes in Duke Energy's mortality assumptions.

214222


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Reconciliation of Funded Status to Accrued Other Post-Retirement Benefit Costs
  Year Ended December 31, 2016
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)  Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Change in Projected Benefit Obligation  
  
                  
Accumulated post-retirement benefit obligation at prior measurement date  $828
 $200
 $354
 $188
 $164
 $35
 $87
Obligation assumed from acquisition39
 
 
 
 
 
 
Service cost  3
 1
 1
 
 1
 
 
Interest cost  35
 8
 15
 8
 7
 1
 4
Plan participants' contributions  19
 3
 7
 4
 3
 1
 2
Actuarial (gains) losses33
 5
 16
 8
 8
 
 3
Transfers  
 1
 
 
 
 
 
Plan amendments  (1) 
 
 
 
 (1) 
Benefits paid  (88) (17) (36) (17) (19) (4) (13)
Accumulated post-retirement benefit obligation at measurement date  $868
 $201
 $357
 $191
 $164
 $32
 $83
Change in Fair Value of Plan Assets  
  
   
   
   
   
   
   
Plan assets at prior measurement date  
$208
 $134
 $
 $
 $1
 $8
 $19
Assets received from acquisition29
 
 
 
 
 
 
Actual return on plan assets  14
 8
 1
 
 
 1
 2
Benefits paid  (88) (17) (36) (17) (19) (4) (13)
Employer contributions  62
 9
 29
 13
 15
 1
 12
Plan participants' contributions  19
 3
 7

4

3

1

2
Plan assets at measurement date  $244
 $137
 $1
 $
 $
 $7
 $22
  Year Ended December 31, 2015
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)  Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Change in Projected Benefit Obligation  
                    
Accumulated post-retirement benefit obligation at prior measurement date  $916
 $220
 $379
 $207
 $170
 $39
 $96
Service cost  6
 1
 1
 1
 1
 
 1
Interest cost  36
 9
 15
 8
 7
 2
 4
Plan participants' contributions  20
 4
 7
 4
 3
 1
 2
Actuarial (gains) losses(39) (18) (1) (13) 11
 (3) 1
Transfers  
 2
 
 
 
 
 
Plan amendments  (9) 
 
 
 
 (1) (4)
Benefits paid  (100) (18) (47) (19) (28) (3) (13)
Obligations transferred with the Midwest Generation Disposal Group(3) 
 
 
 
 
 
Accrued retiree drug subsidy  1
 
 
 
 
 
 
Accumulated post-retirement benefit obligation at measurement date  $828
 $200
 $354
 $188
 $164
 $35
 $87
Change in Fair Value of Plan Assets  
  
   
   
   
   
   
   
Plan assets at prior measurement date  $227
 $145
 $
 $(1) $
 $8
 $23
Actual return on plan assets  (1) (1) 1
 1
 1
 
 (1)
Benefits paid  (100) (18) (47) (19) (28) (3) (13)
Employer contributions  62
 4
 39
 15
 25
 2
 8
Plan participants' contributions  20
 4
 7
 4
 3
 1
 2
Plan assets at measurement date  $208
 $134
 $
 $
 $1
 $8
 $19

223


PART II
DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Amounts Recognized in the Consolidated Balance Sheets
December 31, 2015December 31, 2016
  Duke
   Duke
 Duke
 Duke
 Duke
  Duke
   Duke
 Duke
 Duke
 Duke
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions) Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Current post-retirement liability(a)
$37
 $
 $31
 $16
 $15
 $2
 $
$38
 $
 $31
 $17
 $15
 $2
 $
Noncurrent post-retirement liability(b)
583
 66
 323
 172
 149
 25
 68
586
 64
 325
 174
 149
 23
 63
Total accrued post-retirement liability $620
 $66
 $354
 $188
 $164
 $27
 $68
$624
 $64
 $356
 $191
 $164
 $25
 $63
Regulatory assets $1
 $
 $1
 $
 $1
 $
 $57
$54
 $
 $48
 $38
 $10
 $
 $51
Regulatory liabilities $288
 $68
 $51
 $25
 $26
 $21
 $83
$174
 $46
 $
 $
 $
 $19
 $71
Accumulated other comprehensive (income) loss   
   
   
   
   
   
   
  
   
   
   
   
   
   
Deferred income tax liability $7
 $
 $
 $
 $
 $
 $
$5
 $
 $
 $
 $
 $
 $
Prior service credit (6) 
 (1) 
 
 
 
(5) 
 
 
 
 
 
Net actuarial gain (13) 
 
 
 
 
 
(10) 
 
 
 
 
 
Net amounts recognized in accumulated other comprehensive income $(12) $
 $(1) $
 $
 $
 $
$(10) $
 $
 $
 $
 $
 $
Amounts to be recognized in net periodic pension expense in the next year   
   
   
   
   
   
   
  
   
   
   
   
   
   
Unrecognized net actuarial loss (gain) $6
 $(3) $22
 $13
 $9
 $(2) $(2)$10
 $(2) $21
 $12
 $9
 $(2) $(6)
Unrecognized prior service credit(142) (14) (103) (68) (35) 
 (1)(115) (10) (85) (55) (30) 
 (1)
December 31, 2014December 31, 2015
  Duke
   Duke
 Duke
 Duke
 Duke
  Duke
   Duke
 Duke
 Duke
 Duke
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions) Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Current post-retirement liability(a)
$35
 $
 $29
 $16
 $14
 $2
 $
$37
 $
 $31
 $16
 $15
 $2
 $
Noncurrent post-retirement liability(b)
654
 75
 350
 192
 156
 29
 73
583
 66
 323
 172
 149
 25
 68
Total accrued post-retirement liability $689
 $75
 $379
 $208
 $170
 $31
 $73
$620
 $66
 $354
 $188
 $164
 $27
 $68
Regulatory assets $
 $
 $
 $
 $
 $
 $64
$1
 $
 $1
 $
 $1
 $
 $57
Regulatory liabilities $380
 $76
 $122
 $61
 $61
 $19
 $91
$288
 $68
 $51
 $25
 $26
 $21
 $83
Accumulated other comprehensive (income) loss   
   
   
   
   
   
   
  
   
   
   
   
   
   
Deferred income tax liability $5
 $
 $1
 $
 $
 $
 $
$7
 $
 $
 $
 $
 $
 $
Prior service credit (9) 
 
 
 
 
 
(6) 
 (1) 
 
 
 
Net actuarial gain (5) 
 (2) 
 
 
 
(13) 
 
 
 
 
 
Net amounts recognized in accumulated other comprehensive income $(9) $
 $(1) $
 $
 $
 $
$(12) $
 $(1) $
 $
 $
 $
(a)Included in Other within Current Liabilities on the Consolidated Balance Sheets. 
(b)Included in Accrued pension and other post-retirement benefit costs on the Consolidated Balance Sheets.
Assumptions Used for Other Post-Retirement Benefits Accounting
The discount rate used to determine the current year other post-retirement benefits obligation and following year’s other post-retirement benefits expense is based on a bond selection-settlement portfolio approach. This approach develops a discount rate by selecting a portfolio of high quality corporate bonds that generate sufficient cash flow to provide for projected benefit payments of the plan. The selected bond portfolio is derived from a universe of non-callable corporate bonds rated Aa quality or higher. After the bond portfolio is selected, a single interest rate is determined that equates the present value of the plan’s projected benefit payments discounted at this rate with the market value of the bonds selected. The average remaining service period of active covered employees is nine years for Duke Energy, 11 years for Duke Energy Carolinas, eight years for Duke Energy Ohio, nine years for Duke Energy Indiana and Duke Energy Kentucky, seven years for Progress Energy and Duke Energy Progress and eight years for Duke Energy Florida.

215224


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

The following tables present the assumptions used for other post-retirement benefits accounting.
 December 31, December 31,
 2015
 2014
 2013
 2016
 2015
 2014
Benefit Obligations
   
   
      
   
   
Discount rate  4.40% 4.10% 4.70% 4.10% 4.40% 4.10%
Net Periodic Benefit Cost
   
   
      
   
   
Discount rate  4.10% 4.70% 4.10% 4.40% 4.10% 4.70%
Expected long-term rate of return on plan assets  6.50% 6.75% 7.75% 6.50% 6.50% 6.75%
Assumed tax rate  35% 35% 35% 35% 35% 35%
Assumed Health Care Cost Trend Rate
December 31,December 31,
2015
 2014
2016
 2015
Health care cost trend rate assumed for next year 7.50% 6.75%7.00% 7.50%
Rate to which the cost trend is assumed to decline (the ultimate trend rate) 4.75% 4.75%4.75% 4.75%
Year that rate reaches ultimate trend 2023
 2023
2023
 2023
Sensitivity to Changes in Assumed Health Care Cost Trend Rates
Year Ended December 31, 2015Year Ended December 31, 2016
 Duke
 Duke
Duke
Duke
Duke
 Duke
 Duke
Duke
Duke
Duke
Duke
Energy
Progress
Energy
Energy
Energy
Energy
Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions) Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
1-Percentage Point Increase
        
          
  
Effect on total service and interest costs $2
$
$1
$1
$
$
$
$1
$
$1
$1
$
$
$
Effect on post-retirement benefit obligation 29
7
12
6
6
1
3
29
7
12
6
5
1
3
1-Percentage Point Decrease  
  
  
  
  
  
  
 
Effect on total service and interest costs (1)
(1)(1)


(1)
(1)(1)


Effect on post-retirement benefit obligation (26)(6)(11)(6)(5)(1)(3)(25)(6)(10)(6)(5)(1)(2)
Expected Benefit Payments
 Duke
 Duke
Duke
Duke
Duke
 Duke
 Duke
Duke
Duke
Duke
Duke
Energy
Progress
Energy
Energy
Energy
Energy
Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions) Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Years ending December 31,    
      
  
2016$76
$16
$31
$16
$15
$4
$10
201776
17
31
16
15
3
10
$85
$18
$32
$17
$15
$4
$10
201874
18
30
16
14
3
9
81
18
31
16
15
3
9
201973
18
29
15
14
3
9
78
18
31
16
14
3
9
202071
18
29
15
13
3
8
75
18
30
16
14
3
8
202172
18
29
15
13
3
7
2021 – 2025312
80
129
68
60
14
33
310
76
126
67
58
12
31
PLAN ASSETS
Description and Allocations
Duke Energy Master Retirement Trust
Assets for both the qualified pension and other post-retirement benefits are maintained in the Duke Energy Master Retirement Trust. Piedmont also has qualified pension (Piedmont Pension Assets) and other post-retirement assets. Approximately 98 percent of the Duke Energy Master Retirement Trust assets were allocated to qualified pension plans and approximately 2 percent were allocated to other post-retirement plans (comprised of 401(h) accounts), as of December 31, 20152016 and 2014.2015. The investment objective of the Duke Energy Master Retirement Trust is to achieve reasonable returns, subject to a prudent level of portfolio risk, for the purpose of enhancing the security of benefits for plan participants.

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DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

As of December 31, 2015,2016, Duke Energy assumes pension and other post-retirement plan assets will generate a long-term rate of return of 6.50 percent.percent (6.75 percent for Piedmont Pension and OPEB Assets). The expected long-term rate of return was developed using a weighted average calculation of expected returns based primarily on future expected returns across asset classes considering the use of active asset managers, where applicable. The asset allocation targets were set after considering the investment objective and the risk profile. Equity securities are held for their higher expected return. Debt securities are primarily held to hedge the qualified pension plan liability. Hedge funds, real estate and other global securities are held for diversification. Investments within asset classes are diversified to achieve broad market participation and reduce the impact of individual managers or investments.
In 2013, Duke Energy adopted a de-risking investment strategy for the Duke Energy Master Retirement Trust. As the funded status of the pension plans increase, the targeted allocation to return seeking assets will be reduced and the targeted allocation to fixed-income assets willmay be increased to better manage Duke Energy’s pension liability and reduce funded status volatility. Duke Energy regularly reviews its actual asset allocation and periodically rebalances its investments to the targeted allocation when considered appropriate.
The Duke Energy Master Retirement Master Trust is authorized to engage in the lending of certain plan assets. Securities lending is an investment management enhancement that utilizes certain existing securities of the Duke Energy Master Retirement Master Trust to earn additional income. Securities lending involves the loaning of securities to approved parties. In return for the loaned securities, the Duke Energy Master Retirement Master Trust receives collateral in the form of cash and securities as a safeguard against possible default of any borrower on the return of the loan under terms that permit the Duke Energy Master Retirement Master Trust to sell the securities. The Duke Energy Master Retirement Trust mitigates credit risk associated with securities lending arrangements by monitoring the fair value of the securities loaned, with additional collateral obtained or refunded as necessary. The fair value of securities on loan was approximately $305$156 million and $383$305 million at December 31, 20152016 and 2014,2015, respectively. Cash and securities obtained as collateral exceeded the fair value of the securities loaned at December 31, 20152016 and 2014,2015, respectively. Securities lending income earned by the Duke Energy Master Retirement Trust was immaterial for the years ended December 31, 2016, 2015 2014 and 2013,2014, respectively.
Qualified pension and other post-retirement benefits for the Subsidiary Registrants are derived from the Duke Energy Master Retirement Trust, as such, each are allocated their proportionate share of the assets discussed below.
The following table includes the target asset allocations by asset class at December 31, 20152016 and the actual asset allocations for the Duke Energy Master Retirement Trust.
   Actual Allocation at
  December 31,   Actual Allocation at
Target
    Target
 December 31,
Allocation
 2015
 2014
Allocation(a)

 
2016(a)

 2015
U.S. equity securities 10% 11% 10%10% 11% 11%
Non-U.S. equity securities 8% 8% 8%8% 8% 8%
Global equity securities 10% 10% 10%10% 10% 10%
Global private equity securities 3% 2% 3%3% 2% 2%
Debt securities 63% 63% 63%63% 63% 63%
Hedge funds 2% 2% 3%2% 2% 2%
Real estate and cash 2% 2% 1%2% 2% 2%
Other global securities 2% 2% 2%2% 2% 2%
Total 100% 100% 100%100% 100% 100%
(a)
Excludes Piedmont Pension Assets, which have a targeted asset allocation of 60 percent return-seeking and 40 percent liability hedging fixed-income. Actual asset allocations were 61 percent return-seeking and 39 percent liability hedging fixed-income at December 31, 2016.
VEBA IOther post-retirement assets
Duke Energy also investsEnergy's other post-retirement assets in(OPEB Assets) are comprised of Voluntary Employees' Beneficiary Association trusts and mutual funds within a Piedmont 401(h) account (OPEB Assets exclude 401(h) accounts within the Duke Energy Corporation Employee Benefits Trust (VEBA I)Master Retirement Trust). TheDuke Energy's investment objective of VEBA I is to achieve sufficient returns, subject to a prudent level of portfolio risk, for the purpose of promoting the security of plan benefits for participants.  VEBA I is passively managed. 
The following table presents target and actual asset allocations for VEBA Ithe OPEB Assets at December 31, 2015.2016.
   Actual Allocation at   Actual Allocation at
Target
 December 31,Target
 December 31,
Allocation
 2015
 2014
Allocation
 2016
 2015
U.S. equity securities 30% 29% 29%38% 39% 29%
Real estate2% 2% %
Debt securities 45% 28% 28%45% 37% 28%
Cash 25% 43% 43%15% 22% 43%
Total 100% 100% 100%100% 100% 100%

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DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Fair Value Measurements
Duke Energy classifies recurring and non-recurring fair value measurements based on the fair value hierarchy as discussed in Note 16.
Valuation methods of the primary fair value measurements disclosed below are as follows:

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DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

Investments in equity securities
Investments in equity securities are typically valued at the closing price in the principal active market as of the last business day of the reporting period. Principal active markets for equity prices include published exchanges such as NASDAQ and NYSE. Foreign equity prices are translated from their trading currency using the currency exchange rate in effect at the close of the principal active market. Prices have not been adjusted to reflect after-hours market activity. The majority of investments in equity securities are valued using Level 1 measurements. When the price of an institutional commingled fund is unpublished, it is not categorized in the fair value hierarchy, even though the funds are readily available at the fair value.
Investments in corporate debt securities and U.S. government securities
Most debt investments are valued based on a calculation using interest rate curves and credit spreads applied to the terms of the debt instrument (maturity and coupon interest rate) and consider the counterparty credit rating. Most debt valuations are Level 2 measurements. If the market for a particular fixed incomefixed-income security is relatively inactive or illiquid, the measurement is Level 3. U.S. Treasury debt is typically Level 2.
Investments in short-term investment funds
Investments in short-term investment funds are valued at the net asset value of units held at year end and are readily redeemable at the measurement date. Investments in short-term investment funds with published prices are valued as Level 1. Investments in short-term investment funds with unpublished prices are valued as Level 2.
Investments in real estate limited partnerships
Investments in real estate limited partnerships are valued by the trustee at each valuation date (monthly). As part of the trustee’s valuation process, properties are externally appraised generally on an annual basis, conducted by reputable, independent appraisal firms, and signed by appraisers that are members of the Appraisal Institute, with the professional designation MAI. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. There are three valuation techniques that can be used to value investments in real estate assets: the market, income or cost approach. The appropriateness of each valuation technique depends on the type of asset or business being valued. In addition, the trustee may cause additional appraisals to be performed as warranted by specific asset or market conditions. Property valuations and the salient valuation-sensitive assumptions of each direct investment property are reviewed by the trustee quarterly and values are adjusted if there has been a significant change in circumstances related to the investment property since the last valuation. Value adjustments for interim capital expenditures are only recognized to the extent that the valuation process acknowledges a corresponding increase in fair value. An independent firm is hired to review and approve quarterly direct real estate valuations. Key inputs and assumptions used to determine fair value includes among others, rental revenue and expense amounts and related revenue and expense growth rates, terminal capitalization rates and discount rates. Development investments are valued using cost incurred to date as a primary input until substantive progress is achieved in terms of mitigating construction and leasing risk at which point a discounted cash flow approach is more heavily weighted. Key inputs and assumptions in addition to those noted above used to determine the fair value of development investments include construction costs and the status of construction completion and leasing. Investments in real estate limited partnerships are valued at net asset value of units held at year end and are not readily redeemable at the measurement date. Investments in real estate limited partnerships are not categorized within the fair value hierarchy.

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DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Duke Energy Master Retirement Trust
The following tables provide the fair value measurement amounts for the Duke Energy Master Retirement Trust qualified pension and other post-retirement assets.assets and Piedmont Pension Assets.
December 31, 2015December 31, 2016
Total Fair
       Not
Total Fair
       Not
(in millions) Value
 Level 1
 Level 2
 Level 3
 
Categorized(b)

Value
 Level 1
 Level 2
 Level 3
 
Categorized(b)

Equity securities $2,160
 $1,470
 $2
 $
 688
$2,472
 $1,677
 $27
 $9
 759
Corporate debt securities 4,362
 
 4,362
 
 
4,330
 8
 4,322
 
 
Short-term investment funds 404
 192
 212
 
 
476
 211
 265
 
 
Partnership interests 185
 
 
 
 185
157
 
 
 
 157
Hedge funds 210
 
 
 
 210
232
 
 
 
 232
Real estate limited partnerships 118
 
 
 
 118
144
 17
 
 
 127
U.S. government securities 748
 
 748
 
 
734
 
 734
 
 
Guaranteed investment contracts 31
 
 
 31
 
29
 
 
 29
 
Governments bonds – foreign 34
 
 34
 
 
32
 
 32
 
 
Cash 10
 10
 
 
 
17
 15
 2
 
 
Government and commercial mortgage backed securities 9
 
 9
 
 

 
 
 
 
Net pending transactions and other investments (28) (36) 8
 
 
32
 1
 6
 
 25
Total assets(a)
$8,243
 $1,636
 $5,375
 $31

$1,201
$8,655
 $1,929
 $5,388
 $38

$1,300
(a)Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio and Duke Energy Indiana were allocated approximately 27 percent, 30 percent, 15 percent, 15 percent, 5 percent and 8 percent, respectively, of the Duke Energy Master Retirement Trust and Piedmont Pension assets at December 31, 2016. Accordingly, all amounts included in the table above are allocable to the Subsidiary Registrants using these percentages.
(b)Certain investments are not categorized. These investments are measured based on the fair value of the underlying investments but may not be readily redeemable at that fair value.
  December 31, 2015
 Total Fair
       Not
(in millions)  Value
 Level 1
 Level 2
 Level 3
 
Categorized(b)

Equity securities  $2,160
 $1,470
 $2
 $
 $688
Corporate debt securities  4,362
 
 4,362
 
 
Short-term investment funds  404
 192
 212
 
 
Partnership interests  185
 
 
 
 185
Hedge funds  210
 
 
 
 210
Real estate limited partnerships  118
 
 
 
 118
U.S. government securities  748
 
 748
 
 
Guaranteed investment contracts  31
 
 
 31
 
Governments bonds – foreign  34
 
 34
 
 
Cash  10
 10
 
 
 
Government and commercial mortgage backed securities  9
 
 9
 
 
Net pending transactions and other investments  (28) (36) 8
 
 
Total assets(a)
$8,243
 $1,636
 $5,375
 $31
 $1,201
(a)Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio and Duke Energy Indiana were allocated approximately 28 percent, 32 percent, 15 percent, 16 percent, 5 percent and 8 percent, respectively, of the Duke Energy Master Retirement Trust assets at December 31, 2015. Accordingly, all amounts included in the table above are allocable to the Subsidiary Registrants using these percentages.
(b)Certain investments are not categorized. These investments are measured based on the fair value of the underlying investments but may not be readily redeemable at that fair value.

  December 31, 2014
 Total Fair
       Not
(in millions)  Value
 Level 1
 Level 2
 Level 3
 
Categorized(b)

Equity securities  $2,346
 $1,625
 $3
 $
 $718
Corporate debt securities  4,349
 
 4,348
 1
 
Short-term investment funds  333
 171
 162
 
 
Partnership interests  298
 
 
 
 298
Hedge funds  146
 
 
 
 146
Real estate limited partnerships  104
 
 
 
 104
U.S. government securities  917
 
 916
 1
 
Guaranteed investment contracts  32
 
 
 32
 
Governments bonds – foreign  44
 
 44
 
 
Cash  30
 30
 
 
 
Government and commercial mortgage backed securities  9
 
 9
 
 
Net pending transactions and other investments  10
 (10) 20
 
 
Total assets(a)
$8,618
 $1,816
 $5,502
 $34
 $1,266
(a)Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio and Duke Energy Indiana were allocated approximately 28 percent, 31 percent, 15 percent, 16 percent, 5 percent and 8 percent, respectively, of the Duke Energy Master Retirement Trust assets at December 31, 2014. Accordingly, all amounts included in the table above are allocable to the Subsidiary Registrants using these percentages.
(b)Certain investments are not categorized. These investments are measured based on the fair value of the underlying investments but may not be readily redeemable at that fair value.

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DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

The following table provides a reconciliation of beginning and ending balances of Duke Energy Master Retirement Trust qualified pension and other post-retirement assets of master trusts measuredand Piedmont Pension Assets at fair value on a recurring basis where the determination of fair value includes significant unobservable inputs (Level 3).
(in millions) 2015
 2014
2016
 2015
Balance at January 1 $34
 $37
$31
 $34
Combination of Piedmont Pension Assets9
 
Sales (2) (4)(2) (2)
Total gains (losses) and other, net (1) 1

 (1)
Balance at December 31 $31
 $34
$38
 $31
VEBA IOther post-retirement assets
The following tables provide the fair value measurement amounts for VEBA I other post-retirement assets.OPEB Assets.
December 31, 2015December 31, 2016
Total Fair
      Total Fair
      
(in millions) Value
 Level 1
 Level 2
 Level 3
Value
 Level 1
 Level 2
 Level 3
Cash and cash equivalents $18
 
 $18
 
$14
 
 $14
 
Real estate1
 
 1
 
Equity securities 12
 
 12
 
26
 
 26
 
Debt securities 12
 
 12
 
25
 
 25
 
Total assets $42
 
 $42
 
$66
 
 $66
 
December 31, 2014December 31, 2015
Total Fair
      Total Fair
      
(in millions) Value
 Level 1
 Level 2
 Level 3
Value
 Level 1
 Level 2
 Level 3
Cash and cash equivalents $21
 
 $21
 
$18
 
 $18
 
Equity securities 14
 
 14
 
12
 
 12
 
Debt securities 13
 
 13
 
12
 
 12
 
Total assets $48
 
 $48
 
$42
 
 $42
 
 
EMPLOYEE SAVINGS PLANS
Retirement Savings Plan
Duke Energy sponsors,or its affiliates sponsor, and the Subsidiary Registrants participate in, employee savings plans that cover substantially all U.S. employees. Most employees participate in a matching contribution formula where Duke Energy provides a matching contribution generally equal to 100 percent of employee before-tax and Roth 401(k) contributions and, as applicable, after-tax contributions, of up to 6 percent of eligible pay per pay period.period (5 percent for Piedmont employees). Dividends on Duke Energy shares held by the savings plans are charged to retained earnings when declared and shares held in the plans are considered outstanding in the calculation of basic and diluted earnings per share.EPS.
As of January 1, 2014, for new and rehired non-union and certain unionized employees who are not eligible to participate in Duke Energy’s defined benefit plans, an additional employer contribution of 4 percent of eligible pay per pay period, which is subject to a three-year vesting schedule, is provided to the employee’s savings plan account.
The following table includes pretax employer matching contributions made by Duke Energy and expensed by the Subsidiary Registrants.
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)  Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Years ended December 31,                      
2015(a)
$159
 $54
 $48
 $34
 $13
 $3
 $7
2014(a)
143
 47
 43
 30
 14
 3
 7
2013134
 45
 45
 25
 14
 3
 7
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)  Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Years ended December 31,                      
2016$169
 $57
 $50
 $35
 $15
 $3
 $8
2015159
 54
 48
 34
 13
 3
 7
2014143
 47
 43
 30
 14
 3
 7
(a)For 2014 and 2015, amounts include the additional employer contribution of 4 percent of eligible pay per pay period for employees not eligible to participate in a defined benefit plan.

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DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Money Purchase Pension Plan
Piedmont sponsors the MPP plan, which is a defined contribution pension plan that allows employees to direct investments and assume risk of investment returns. Under the MPP plan, Piedmont annually deposits a percentage of each participant’s pay into an account of the MPP plan. This contribution equals 4 percent of the participant’s compensation plus an additional 4 percent of compensation above the Social Security wage base up to the IRS compensation limit. The participant is vested in MPP plan after three years of service. No contributions were made to the MPP plan during the three months ended December 31, 2016. In January 2017, a $2.2 million contribution was made to the MPP plan.
22. INCOME TAXES
Income Tax Expense
Components of Income Tax Expense
Year Ended December 31, 2015Year Ended December 31, 2016
 Duke
 Duke
Duke
Duke
Duke
 Duke
 Duke
Duke
Duke
Duke
Duke
Energy
Progress
Energy
Energy
Energy
Energy
Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Current income taxes     
Federal $
$216
$(193)$(56)$1
$(18)$(86)$
$139
$15
$(59)$76
$(7)$7
State (12)14
1
(4)(7)(1)(12)(15)25
(19)(25)22
(13)6
Foreign 99






2






Total current income taxes 87
230
(192)(60)(6)(19)(98)(13)164
(4)(84)98
(20)13
Deferred income taxes       
Federal 1,089
345
694
334
290
96
245
1,064
430
486
350
199
88
202
State 181
57
27
27
58
5
17
117
45
50
40
25
11
11
Foreign (17)





Total deferred income taxes(a)
1,253
402
721
361
348
101
262
1,181
475
536
390
224
99
213
Investment tax credit amortization (14)(5)(7)(7)
(1)(1)(12)(5)(5)(5)
(1)(1)
Income tax expense from continuing operations 1,326
627
522
294
342
81
163
1,156
634
527
301
322
78
225
Tax expense (benefit) from discontinued operations 19

(1)

22

Tax (benefit) expense from discontinued operations (30)
1


(36)
Total income tax expense included in Consolidated Statements of Operations $1,345
$627
$521
$294
$342
$103
$163
$1,126
$634
$528
$301
$322
$42
$225
(a)Includes benefits of net operating loss (NOL) carryforwards and tax credit carryforwards of $648 million at Duke Energy, $4 million at Duke Energy Carolinas, $190 million at Progress Energy, $60 million at Duke Energy Progress, $49 million at Duke Energy Florida, $26 million at Duke Energy Ohio and $58 million at Duke Energy Indiana.
  Year Ended December 31, 2015
  Duke
 Duke
Duke
Duke
Duke
 Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)  
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Current income taxes                
Federal  $
$216
$(193)$(56)$1
$(18)$(86)
State  (12)14
1
(4)(7)(1)(12)
Foreign  4






Total current income taxes  (8)230
(192)(60)(6)(19)(98)
Deferred income taxes               
Federal  1,097
345
694
334
290
96
245
State  181
57
27
27
58
5
17
Total deferred income taxes(a)
1,278
402
721
361
348
101
262
Investment tax credit amortization  (14)(5)(7)(7)
(1)(1)
Income tax expense from continuing operations  1,256
627
522
294
342
81
163
Tax expense (benefit) from discontinued operations  89

(1)

22

Total income tax expense included in Consolidated Statements of Operations  $1,345
$627
$521
$294
$342
$103
$163
(a)Includes benefits of NOL carryforwards and utilization of NOL and tax credit carryforwards of $264 million at Duke Energy, $15 million at Duke Energy Carolinas, $119 million at Progress Energy, $21 million at Duke Energy Progress, $84 million at Duke Energy Florida, $3 million at Duke Energy Ohio and $45 million at Duke Energy Indiana.

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DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

Year Ended December 31, 2014Year Ended December 31, 2014
 Duke
 Duke
Duke
Duke
Duke
 Duke
 Duke
Duke
Duke
Duke
Duke
Energy
Progress
Energy
Energy
Energy
Energy
Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Current income taxes     
Federal $
$161
$(466)$(184)$(53)$(73)$(112)$
$161
$(466)$(184)$(53)$(73)$(112)
State 56
51
(8)14
1
3
1
56
51
(8)14
1
3
1
Foreign 144






6






Total current income taxes 200
212
(474)(170)(52)(70)(111)62
212
(474)(170)(52)(70)(111)
Deferred income taxes     
Federal 1,517
407
938
436
350
113
294
1,144
407
938
436
350
113
294
State 35
(25)84
25
52
1
15
35
(25)84
25
52
1
15
Foreign (67)





Total deferred income taxes(a)(b)
1,485
382
1,022
461
402
114
309
1,179
382
1,022
461
402
114
309
Investment tax credit amortization (16)(6)(8)(6)(1)(1)(1)(16)(6)(8)(6)(1)(1)(1)
Income tax expense from continuing operations 1,669
588
540
285
349
43
197
1,225
588
540
285
349
43
197
Tax benefit from discontinued operations (295)
(4)

(300)
Tax expense (benefit) from discontinued operations 149

(4)

(300)
Total income tax expense (benefit) included in Consolidated Statements of Operations $1,374
$588
$536
$285
$349
$(257)$197
$1,374
$588
$536
$285
$349
$(257)$197
(a)There were no benefits of NOL carryforwards.
(b)Includes utilization of NOL and tax credit carryforwards of $1,544 million at Duke Energy, $345 million at Duke Energy Carolinas, $530 million at Progress Energy, $291 million at Duke Energy Progress, $64 million at Duke Energy Florida, $56 million at Duke Energy Ohio and $141 million at Duke Energy Indiana.
Duke Energy Income from Continuing Operations before Income Taxes
  Years Ended December 31,
(in millions)2016 2015 2014
Domestic$3,689
 $3,831
 $3,637
Foreign45
 79
 126
Income from continuing operations before income taxes$3,734
 $3,910
 $3,763
Taxes on Foreign Earnings
During 2014, Duke Energy declared a taxable dividend of foreign earnings in the form of notes payable that was expected to result in the repatriation of approximately $2.7 billion of cash held, and expected to be generated, by International businesses over a period of up to eight years. As a result of the decision to repatriate cumulative historical undistributed foreign earnings, Duke Energy recorded U.S. income tax expense of approximately $373 million in 2014. As of December 31, 2014, Duke Energy's intention was to indefinitely reinvest any future undistributed foreign earnings.
In February 2016, Duke Energy announced it had initiated a process to divest the International Disposal Group and, accordingly, no longer intended to indefinitely reinvest post-2014 undistributed foreign earnings. This change in the Company's intent, combined with the extension of bonus depreciation by Congress in late 2015, allowed Duke Energy to more efficiently utilize foreign tax credits and reduce U.S. deferred tax liabilities associated with the historical unremitted foreign earnings by approximately $95 million during the year ended December 31, 2016.
Due to the classification of the International Disposal Group as discontinued operations beginning in the fourth quarter of 2016, income tax amounts related to the International Disposal Group's foreign earnings are presented within (Loss) Income from Discontinued Operations, net of tax on the Consolidated Statements of Operations. In December 2016, Duke Energy closed on the sale of the International Disposal Group in two separate transactions to execute the divestiture. See Note 2 for additional information on the sale.

221231


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

  Year Ended December 31, 2013
  Duke
 Duke
Duke
Duke
Duke
 Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)  
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Current income taxes                
Federal  $(141)$49
$(221)$(70)$(143)$(24)$(88)
State  (40)11
(37)(10)(13)(4)7
Foreign  151






Total current income taxes  (30)60
(258)(80)(156)(28)(81)
Deferred income taxes                
Federal  1,092
464
555
316
326
65
276
State  144
75
84
59
44
6
29
Foreign  14






Total deferred income taxes(a)
1,250
539
639
375
370
71
305
Investment tax credit amortization  (15)(5)(8)(7)(1)
(1)
Income tax expense from continuing operations  1,205
594
373
288
213
43
223
Tax expense (benefit) from discontinued operations  29

(26)

32

Total income tax expense included in Consolidated Statements of Operations  $1,234
$594
$347
$288
$213
$75
$223
(a)Includes benefits of NOL carryforwards of $808 million at Duke Energy, $458 million at Progress Energy, $64 million at Duke Energy Progress, $301 million at Duke Energy Florida and $179 million at Duke Energy Indiana.
Duke Energy Income from Continuing Operations before Income Taxes
  Years Ended December 31,
(in millions)2015 2014 2013
Domestic$3,828
 $3,600
 $3,183
Foreign309
 534
 612
Income from continuing operations before income taxes$4,137
 $4,134
 $3,795

222


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

Statutory Rate Reconciliation
The following tables present a reconciliation of income tax expense at the U.S. federal statutory tax rate to the actual tax expense from continuing operations.
Year Ended December 31, 2015Year Ended December 31, 2016
 Duke
 Duke
Duke
Duke
Duke
 Duke
 Duke
Duke
Duke
Duke
Duke
Energy
Progress
Energy
Energy
Energy
Energy
Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Income tax expense, computed at the statutory rate of 35 percent$1,448
$598
$555
$302
$330
$81
$168
$1,307
$630
$548
$315
$306
$95
$212
State income tax, net of federal income tax effect109
46
18
15
33
2
2
64
46
20
10
30
(2)11
Tax differential on foreign earnings(27)





AFUDC equity income(58)(34)(19)(17)(3)(1)(4)(70)(36)(26)(17)(9)(2)(6)
Renewable energy production tax credits(72)
(1)



(97)





Audit adjustment(22)
(23)1
(24)

5
3





Tax true-up2
2
(3)(4)2
(5)(9)(14)(14)(11)(3)(9)(16)2
Other items, net(54)15
(5)(3)4
4
6
(39)5
(4)(4)4
3
6
Income tax expense from continuing operations$1,326
$627
$522
$294
$342
$81
$163
$1,156
$634
$527
$301
$322
$78
$225
Effective tax rate32.1%36.7%32.9%34.2%36.3%35.2%34.0%31.0%35.2%33.7%33.4%36.9%28.9%37.1%
Year Ended December 31, 2014Year Ended December 31, 2015
 Duke
 Duke
Duke
Duke
Duke
 Duke
 Duke
Duke
Duke
Duke
Duke
Energy
Progress
Energy
Energy
Energy
Energy
Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Income tax expense, computed at the statutory rate of 35 percent$1,447
$581
$497
$263
$314
$39
$195
$1,369
$598
$555
$302
$330
$81
$168
State income tax, net of federal income tax effect59
17
49
25
34
3
10
109
46
18
15
33
2
2
Tax differential on foreign earnings(a)
(110)





AFUDC equity income(47)(32)(9)(9)
(1)(5)(58)(34)(19)(17)(3)(1)(4)
Renewable energy production tax credits(67)





(72)
(1)



International tax dividend(b)
373






Audit adjustment(22)
(23)1
(24)

Tax true-up2
2
(3)(4)2
(5)(9)
Other items, net14
22
3
6
1
2
(3)(72)15
(5)(3)4
4
6
Income tax expense (benefit) from continuing operations$1,669
$588
$540
$285
$349
$43
$197
Income tax expense from continuing operations$1,256
$627
$522
$294
$342
$81
$163
Effective tax rate40.4%35.4%38.0%37.9%38.9%38.9%35.5%32.1%36.7%32.9%34.2%36.3%35.2%34.0%
  Year Ended December 31, 2014
  Duke
 Duke
Duke
Duke
Duke
 Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)  
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Income tax expense, computed at the statutory rate of 35 percent$1,317
$581
$497
$263
$314
$39
$195
State income tax, net of federal income tax effect59
17
49
25
34
3
10
AFUDC equity income(47)(32)(9)(9)
(1)(5)
Renewable energy production tax credits(67)





Other items, net(37)22
3
6
1
2
(3)
Income tax expense from continuing operations$1,225
$588
$540
$285
$349
$43
$197
Effective tax rate32.6%35.4%38.0%37.9%38.9%38.9%35.5%
(a)Includes a $57 million benefit as a result of the merger of two Chilean subsidiaries and a change in income tax rates in various countries primarily relating to Peru.
(b)During 2014, Duke Energy declared a taxable dividend of foreign earnings in the form of notes payable that was expected to result in the repatriation of approximately $2.7 billion of cash held, and expected to be generated, by International Energy over a period of up to eight years. In 2015, approximately $1.5 billion was remitted. As a result of the decision to repatriate cumulative historical undistributed foreign earnings Duke Energy recorded U.S. income tax expense of approximately $373 million in 2014.
  Year Ended December 31, 2013
  Duke
 Duke
Duke
Duke
Duke
 Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)  
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Income tax expense, computed at the statutory rate of 35 percent$1,328
$549
$361
$276
$188
$39
$203
State income tax, net of federal income tax effect66
56
31
31
20
2
23
Tax differential on foreign earnings(49)





AFUDC equity income(55)(32)(18)(15)(3)
(5)
Renewable energy production tax credits(62)





Other items, net(23)21
(1)(4)8
2
2
Income tax expense from continuing operations$1,205
$594
$373
$288
$213
$43
$223
Effective tax rate31.8%37.8%36.2%36.5%39.6%39.1%38.4%

223


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

Valuation allowances have been established for certain foreign and state NOL carryforwards and state income tax credits that reduce deferred tax assets to an amount that will be realized on a more-likely-than-not basis. The net change in the total valuation allowance is included in Tax differential on foreign earnings andthe State income tax, net of federal income tax effect in the above tables.
Undistributed Foreign Earnings
As of December 31, 2015, Duke Energy’s intention was to indefinitely reinvest undistributed earnings generated by Duke Energy's foreign subsidiaries. As a result, no U.S. tax is recorded on such earnings of approximately $250 million. The amount of unrecognized deferred tax liability related to undistributed earnings was approximately $12 million.
232


On February 18, 2016, Duke Energy announced it had initiated a process to divest the International Energy business segment, excluding the investment in NMC. See Note 2 for further information. Accordingly, Duke Energy no longer intends to indefinitely reinvest the undistributed foreign earnings of International Energy and will therefore record U.S. taxes related to International Energy's undistributed foreign earnings during the first quarter of 2016.PART II
DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

DEFERRED TAXES
Net Deferred Income Tax Liability Components
December 31, 2015December 31, 2016
 Duke
 Duke
Duke
Duke
Duke
 Duke
 Duke
Duke
Duke
Duke
Duke
Energy
Progress
Energy
Energy
Energy
Energy
Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Deferred credits and other liabilities $245
$38
$115
$25
$66
$29
$5
$382
$66
$126
$40
$93
$21
$4
Capital lease obligations 63
9




2
60
8




1
Pension, post-retirement and other employee benefits 580
46
186
92
82
24
40
561
16
199
91
96
22
37
Progress Energy merger purchase accounting adjustments(a)
1,009






918






Tax credits and NOL carryforwards 3,719
170
997
163
177
25
215
4,682
192
1,165
222
232
49
278
Investments and other assets




3






3

Other 206
20
48
2
46
37
20
205
16
35
8

5
9
Valuation allowance (160)
(38)



(96)
(12)



Total deferred income tax assets 5,662
283
1,308
282
371
118
282
6,712
298
1,513
361
421
100
329
Investments and other assets (1,584)(1,057)(412)(228)(201)
(7)(1,892)(1,149)(597)(313)(297)
(21)
Accelerated depreciation rates (13,070)(4,429)(4,169)(2,325)(1,868)(1,356)(1,797)(14,872)(4,664)(4,490)(2,479)(2,038)(1,404)(1,938)
Regulatory assets and deferred debits, net (3,633)(943)(1,517)(756)(762)(169)(135)(4,103)(1,029)(1,672)(892)(780)(139)(270)
Total deferred income tax liabilities (18,287)(6,429)(6,098)(3,309)(2,831)(1,525)(1,939)(20,867)(6,842)(6,759)(3,684)(3,115)(1,543)(2,229)
Net deferred income tax liabilities $(12,625)$(6,146)$(4,790)$(3,027)$(2,460)$(1,407)$(1,657)$(14,155)$(6,544)$(5,246)$(3,323)$(2,694)$(1,443)$(1,900)
(a)Primarily related to capital lease obligations and debt fair value adjustments.
The following table presents the expiration of tax credits and NOL carryforwards.
December 31, 2015December 31, 2016
(in millions)
Amount
 Expiration YearAmount
 Expiration Year
Investment tax credits $864
 2029  2035$1,143
 2027  2036
Alternative minimum tax credits 1,121
 Indefinite1,151
 Indefinite
Federal NOL carryforwards 484
 2030  20331,267
 2020  2036
State NOL carryforwards and credits(a)
299
 2016  2035248
 2017  2036
Foreign NOL carryforwards(b)
100
 2026  203412
 2026  2036
Foreign Tax Credits851
 2024 859
 2024  2026
Charitable Carryforwards2
 2017  2019
Total tax credits and NOL carryforwards $3,719
         $4,682
         
(a)A valuation allowance of $81$84 million has been recorded on the state Net Operating LossNOL carryforwards, as presented in the Net Deferred Income Tax Liability Components table.
(b)A valuation allowance of $79$12 million has been recorded on the foreign Net Operating LossNOL carryforwards, as presented in the Net Deferred Income Tax Liability Components table.

224233


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

December 31, 2014December 31, 2015
 Duke
 Duke
Duke
Duke
Duke
 Duke
 Duke
Duke
Duke
Duke
Duke
Energy
Progress
Energy
Energy
Energy
Energy
Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Deferred credits and other liabilities $188
$53
$108
$28
$78
$(8)$12
$201
$38
$115
$25
$66
$29
$5
Capital lease obligations 63
10




2
63
9




2
Pension, post-retirement and other employee benefits 546
4
188
96
93
17
43
580
46
186
92
82
24
40
Progress Energy merger purchase accounting adjustments(a)
1,124






1,009






Tax credits and NOL carryforwards 3,540
157
980
91
252
38
260
3,631
170
997
163
177
25
215
Investments and other assets




14






3

Other
12

55

35
11
206
20
48
2
46
37
20
Valuation allowance (184)
(13)(1)


(93)
(38)



Total deferred income tax assets 5,277
236
1,263
269
423
96
328
5,597
283
1,308
282
371
118
282
Investments and other assets (1,625)(1,051)(427)(232)(245)
(4)(1,573)(1,057)(412)(228)(201)
(7)
Accelerated depreciation rates (11,715)(4,046)(3,284)(2,030)(1,252)(1,660)(1,603)(12,939)(4,429)(4,169)(2,325)(1,868)(1,356)(1,797)
Regulatory assets and deferred debits, net (3,694)(953)(1,602)(809)(792)(141)(106)(3,633)(943)(1,517)(756)(762)(169)(135)
Other(44)
(151)
(246)

Total deferred income tax liabilities (17,078)(6,050)(5,464)(3,071)(2,535)(1,801)(1,713)(18,145)(6,429)(6,098)(3,309)(2,831)(1,525)(1,939)
Net deferred income tax liabilities $(11,801)$(5,814)$(4,201)$(2,802)$(2,112)$(1,705)$(1,385)$(12,548)$(6,146)$(4,790)$(3,027)$(2,460)$(1,407)$(1,657)
(a)Primarily related to capital lease obligations and debt fair value adjustments.
On July 23, 2013, HB 998 was signed into law. HB 998 reduces the North Carolina corporate income tax rate from a statutory 6.9 percent to 6.0 percent in January 2014 with a further reduction to 5.0 percent in January 2015. Duke Energy recorded a net reduction of approximately $145 million to its North Carolina deferred tax liability in the third quarter of 2013. The significant majority of this deferred tax liability reduction was offset by recording a regulatory liability pending NCUC determination of the disposition of the amounts related to Duke Energy Carolinas and Duke Energy Progress. The impact of HB 998 did not have a significant impact on the financial position, results of operation, or cash flows of Duke Energy, Duke Energy Carolinas, Progress Energy or Duke Energy Progress.
On August 6, 2015, pursuant to N.C. Gen. Stat. 105-130.3C, the North Carolina Department of Revenue announced the North Carolina corporate income tax rate would be reduced from a statutory rate of 5.0 percent to 4.0 percent beginning January 1, 2016. Duke Energy recorded a net reduction of approximately $95 million to its North Carolina deferred tax liability in the third quarter of 2015. The significant majority of this deferred tax liability reduction was offset by recording a regulatory liability pending NCUC determination of the disposition of amounts related to Duke Energy Carolinas and Duke Energy Progress. The impact did not have a significant impact on the financial position, results of operation, or cash flows of Duke Energy, Duke Energy Carolinas, Progress Energy or Duke Energy Progress.
Balance Sheet ClassificationOn August 4, 2016, pursuant to N.C. Gen. Stat. 105-130.3C, the North Carolina Department of Deferred Taxes
As discussed in NoteRevenue announced the North Carolina corporate income tax rate would be reduced from a statutory rate of 4.0 percent to 3.0 percent beginning January 1, the FASB issued revised accounting guidance for the Balance Sheet classification2017. Duke Energy recorded a net reduction of approximately $80 million to its North Carolina deferred taxes. As showntax liability in the table below, allthird quarter of 2016. The significant majority of this deferred tax assetsliability reduction was offset by recording a regulatory liability pending NCUC determination of the disposition of amounts related to Duke Energy Carolinas and liabilities are presented as noncurrent asDuke Energy Progress. The impact did not have a significant impact on the financial position, results of December 31, 2015. However, for December 31, 2014, the revised guidance was not applied. As a result, a portionoperation, or cash flows of deferred tax assets and liabilities is shown as current at December 31, 2014.Duke Energy, Duke Energy Carolinas, Progress Energy or Duke Energy Progress.

225

234


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

  December 31, 2015
  Duke
 Duke
Duke
Duke
Duke
 Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)  
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Investments and Other Assets: Other80






Deferred Credits and Other Liabilities: Deferred income taxes(12,705)(6,146)(4,790)(3,027)(2,460)(1,407)(1,657)
Net deferred income tax liabilities$(12,625)$(6,146)$(4,790)$(3,027)$(2,460)$(1,407)$(1,657)
  December 31, 2014
  Duke
 Duke
Duke
Duke
Duke
 Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)  
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Current Assets: Other$1,593
$3
$558
$106
$340
$60
$206
Investments and Other Assets: Other29






Current Liabilities: Other
(5)




Deferred Credits and Other Liabilities: Deferred income taxes(13,423)(5,812)(4,759)(2,908)(2,452)(1,765)(1,591)
Net deferred income tax liabilities$(11,801)$(5,814)$(4,201)$(2,802)$(2,112)$(1,705)$(1,385)

226


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

UNRECOGNIZED TAX BENEFITS
The following tables present changes to unrecognized tax benefits.
  Year Ended December 31, 2016
  Duke
 Duke
Duke
Duke
 Duke
Energy
Progress
Energy
Energy
Energy
(in millions)  
Energy
Carolinas
Energy
Progress
Ohio
Indiana
Unrecognized tax benefits – January 1$88
$72
$1
$3
$
$1
Unrecognized tax benefits increases (decreases)      
Gross increases – tax positions in prior periods



4

Gross decreases – tax positions in prior periods(4)(4)(1)(1)

Decreases due to settlements(68)(67)


(1)
Reduction due to lapse of statute of limitations1

2



Total changes(71)(71)1
(1)4
(1)
Unrecognized tax benefits – December 31$17
$1
$2
$2
$4
$
  Year Ended December 31, 2015
  Duke
 Duke
Duke
Duke
 Duke
Energy
Progress
Energy
Energy
Energy
(in millions)  
Energy
Carolinas
Energy
Progress
Florida
Indiana
Unrecognized tax benefits – January 1$213
$160
$32
$23
$8
$1
Unrecognized tax benefits increases (decreases)      
Gross increases – tax positions in prior periods

1
1


Gross decreases – tax positions in prior periods(48)(45)



Decreases due to settlements(45)(43)



Reduction due to lapse of statute of limitations(32)
(32)(21)(8)
Total changes(125)(88)(31)(20)(8)
Unrecognized tax benefits – December 31$88
$72
$1
$3
$
$1
  Year Ended December 31, 2014
  Duke
 Duke
Duke
Duke
 Duke
Energy
Progress
Energy
Energy
Energy
(in millions)  
Energy
Carolinas
Energy
Progress
Florida
Indiana
Unrecognized tax benefits – January 1$230
$171
$32
$22
$8
$1
Unrecognized tax benefits (decreases) increases      
Gross increases – tax positions in prior periods

1
1


Gross decreases – tax positions in prior periods(2)




Decreases due to settlements(15)(11)(1)


Total changes(17)(11)
1


Unrecognized tax benefits – December 31$213
$160
$32
$23
$8
$1
Year Ended December 31, 2013Year Ended December 31, 2014
 Duke
 Duke
Duke
Duke
Duke
 Duke
 Duke
Duke
Duke
Duke
Energy
Progress
Energy
Energy
Energy
Energy
Duke
Energy
Progress
Energy
Energy
Energy
(in millions)
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Energy
Carolinas
Energy
Progress
Florida
Indiana
Unrecognized tax benefits – January 1$540
$271
$131
$67
$44
$36
$32
$230
$171
$32
$22
$8
$1
Unrecognized tax benefits increases (decreases)  
Gross increases — tax positions in prior periods

1
1


Gross decreases – tax positions in prior periods(231)(100)(86)(45)(37)(36)(31)(2)




Decreases due to settlements(66)





(15)(11)(1)


Reduction due to lapse of statute of limitations(13)
(13)
1


Total changes(310)(100)(99)(45)(36)(36)(31)(17)(11)
1


Unrecognized tax benefits – December 31$230
$171
$32
$22
$8
$
$1
$213
$160
$32
$23
$8
$1
The following table includes additional information regarding the Duke Energy Registrants' unrecognized tax benefits. It is reasonably possible that Duke Energy could reflect an approximate $65$8 million reduction and Duke Energy Carolinas could reflect an approximate $63$1 million reduction in unrecognized tax benefits within the next 12 months. All other Duke Energy Registrants do not anticipate a material increase or decrease in unrecognized tax benefits within the next 12 months.
December 31, 2015 December 31, 2016 
 Duke
 Duke
Duke
Duke
Duke
 Duke
 Duke
Duke
Duke
Duke
Duke
Energy
Progress
Energy
Energy
Energy
Energy
Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Amount that if recognized, would affect the
effective tax rate or regulatory liability(a)
$62
$54
$2
$3
$1
$
$2
$8
$1
$2
$2
$
$
$
Amount that if recognized, would be recorded as a
component of discontinued operations
4






5




2

(a)Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida and Duke Energy Indiana are unable to estimate the specific amounts that would affect the effective tax rate versus the regulatory liability.

227235


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

OTHER TAX MATTERS
The following tables include interest recognized in the Consolidated Statements of Operations and the Consolidated Balance Sheets.
Year Ended December 31, 2015Year Ended December 31, 2016
 Duke
 Duke
Duke
Duke
Duke
 Duke
 Duke
Duke
Duke
Energy
Progress
Energy
Energy
Energy
Energy
Duke
Energy
Progress
Energy
Energy
(in millions)
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Energy
Carolinas
Energy
Progress
Florida
Net interest income recognized related to income taxes$12
$
$2
$2
$1
$
$1
$
$
$1
$
$2
Net interest expense recognized related to income taxes
1






7



Interest receivable related to income taxes3





3
Interest payable related to income taxes
14

1



4
23
1
1

Year Ended December 31, 2014Year Ended December 31, 2015
 Duke
 Duke
Duke
Duke
Duke
 Duke
 Duke
Duke
Duke
Duke
Energy
Progress
Energy
Energy
Energy
Energy
Duke
Energy
Progress
Energy
Energy
Energy
(in millions)
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Energy
Carolinas
Energy
Progress
Florida
Indiana
Net interest income recognized related to income taxes$6
$
3

1
4
$4
$12
$
$2
$2
$1
$1
Net interest expense recognized related to income taxes
1

1




1




Interest receivable related to income taxes





2
3




3
Interest payable related to income taxes13
13
5
3
5



14

1


Year Ended December 31, 2013Year Ended December 31, 2014
 Duke
 Duke
Duke
Duke
Duke
 Duke
 Duke
Duke
Duke
Duke
Duke
Energy
Progress
Energy
Energy
Energy
Energy
Duke
Energy
Progress
Energy
Energy
Energy
Energy
(in millions)
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Energy
Carolinas
Energy
Progress
Florida
Ohio
Indiana
Net interest income recognized related to income taxes$2
$2
$6
$7
$
4
1
$6
$
$3
$
$1
$4
$4
Net interest expense recognized related to income taxes
1

1



Interest receivable related to income taxes





2
Interest payable related to income taxes27
8
10
2
7


13
13
5
3
5


 
Duke Energy and its subsidiaries are no longer subject to U.S. federal examination for years before 2008. The years 2008 through 2011 are in Appeals. The IRS is currently auditing the federal income tax returns for years 2012 through 2014.2015. With few exceptions, Duke Energy and its subsidiaries are no longer subject to state, local or non-U.S. income tax examinations by tax authorities for years before 2004.

228


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

23. OTHER INCOME AND EXPENSES, NET
The components of Other income and expenses, net on the Consolidated Statements of Operations are as follows.
Year Ended December 31, 2015Year Ended December 31, 2016
  Duke
   Duke
 Duke
 Duke
 Duke
  Duke
   Duke
 Duke
 Duke
 Duke
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions) Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Interest income $38
 $2
 $4
 $2
 $2
 $4
 $6
$21
 $4
 $4
 $3
 $2
 $5
 $6
Foreign exchange losses (4) 
 
 
 
 
 
AFUDC equity 164
 96
 54
 47
 7
 3
 11
200
 102
 76
 50
 26
 6
 16
Post in-service equity returns 73
 60
 13
 13
 
 
 
67
 55
 12
 12
 
 
 
Nonoperating income (expense), other 36
 2
 26
 9
 15
 (1) (6)36
 1
 22
 6
 16
 (2) 
Other income and expense, net $307
 $160
 $97
 $71
 $24
 $6
 $11
$324
 $162
 $114
 $71
 $44
 $9
 $22
Year Ended December 31, 2014Year Ended December 31, 2015
  Duke
   Duke
 Duke
 Duke
 Duke
  Duke
   Duke
 Duke
 Duke
 Duke
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions) Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Interest income $57
 $4
 $3
 $
 $2
 $8
 $6
$20
 $2
 $4
 $2
 $2
 $4
 $6
Foreign exchange gains 3
 
 
 
 
 
 
AFUDC equity 135
 91
 26
 25
 
 4
 14
164
 96
 54
 47
 7
 3
 11
Post in-service equity returns 89
 71
 17
 17
 
 
 
73
 60
 13
 13
 
 
 
Nonoperating income (expense), other67
 6
 31
 9
 18
 (2) 2
33
 2
 26
 9
 15
 (1) (6)
Other income and expense, net $351
 $172
 $77
 $51
 $20
 $10
 $22
$290
 $160
 $97
 $71
 $24
 $6
 $11
  Year Ended December 31, 2013
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)  Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Interest income  $26
 $1
 $7
 $1
 $3
 $5
 $6
Foreign exchange losses(18) 
 
 
 
 
 
AFUDC equity  157
 91
 50
 42
 8
 1
 15
Post in-service equity returns  39
 32
 7
 7
 
 
 
Nonoperating income (expense), other58
 (4) 30
 7
 19
 (4) (3)
Other income and expense, net  $262
 $120
 $94
 $57
 $30
 $2
 $18
24. SUBSEQUENT EVENTS
For information on subsequent events related to significant accounting policies, acquisitions and dispositions, business segments, regulatory matters, commitments and contingencies, debt and credit facilities, asset retirement obligations, derivatives and hedging and income taxes see Notes 1, 2, 3, 4, 5, 6, 9, 14 and 22, respectively.

229236


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

 Year Ended December 31, 2014
   Duke
   Duke
 Duke
 Duke
 Duke
 Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Interest income$16
 $4
 $3
 $
 $2
 $8
 $6
AFUDC equity135
 91
 26
 25
 
 4
 14
Post in-service equity returns89
 71
 17
 17
 
 
 
Nonoperating income (expense), other80
 6
 31
 9
 18
 (2) 2
Other income and expense, net$320
 $172
 $77
 $51
 $20
 $10
 $22
24. SUBSEQUENT EVENTS
For information on subsequent events related to regulatory matters, commitments and contingencies, and debt and credit facilities see Notes 4, 5 and 6, respectively.


237


PART II
DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

25. QUARTERLY FINANCIAL DATA (UNAUDITED)
DUKE ENERGY
Quarterly EPS amounts may not sum to the full-year total due to changes in the weighted average number of common shares outstanding and rounding.
First
 Second
 Third
 Fourth
  First
 Second
 Third
 Fourth
  
(in millions, except per share data) Quarter
 Quarter
 Quarter
 Quarter
 Total
Quarter
 Quarter
 Quarter
 Quarter
 Total
2016         
Operating revenues$5,377
 $5,213
 $6,576
 $5,577
 $22,743
Operating income1,240
 1,259
 1,954
 888
 5,341
Income from continuing operations577
 624
 1,001
 376
 2,578
Income (loss) from discontinued operations, net of tax122
 (112) 180
 (598) (408)
Net income (loss)699
 512
 1,181
 (222) 2,170
Net income (loss) attributable to Duke Energy Corporation694
 509
 1,176
 (227) 2,152
Earnings per share:         
Income from continuing operations attributable to Duke Energy Corporation common stockholders         
Basic$0.83
 $0.90
 $1.44
 $0.53
 $3.71
Diluted$0.83
 $0.90
 $1.44
 $0.53
 $3.71
Income (Loss) from discontinued operations attributable to Duke Energy Corporation common stockholders         
Basic$0.18
 $(0.16) $0.26
 $(0.86) $(0.60)
Diluted$0.18
 $(0.16) $0.26
 $(0.86) $(0.60)
Net income (loss) attributable to Duke Energy Corporation common stockholders         
Basic$1.01
 $0.74
 $1.70
 $(0.33) $3.11
Diluted$1.01
 $0.74
 $1.70
 $(0.33) $3.11
2015                       
Operating revenues $6,065
 $5,589
 $6,483
 $5,322
 $23,459
$5,792
 $5,302
 $6,202
 $5,075
 $22,371
Operating income 1,456
 1,246
 1,688
 977
 5,367
1,390
 1,192
 1,606
 890
 5,078
Income from continuing operations 776
 604
 940
 491
 2,811
755
 576
 890
 433
 2,654
Income (loss) from discontinued operations, net of tax91
 (57) (5) (9) 20
Income (Loss) from discontinued operations, net of tax112
 (29) 45
 49
 177
Net income867
 547
 935
 482
 2,831
867
 547
 935
 482
 2,831
Net income attributable to Duke Energy Corporation 864
 543
 932
 477
 2,816
864
 543
 932
 477
 2,816
Earnings per share:                        
Income from continuing operations attributable to Duke Energy Corporation common stockholders                        
Basic $1.09
 $0.87
 $1.36
 $0.70
 $4.02
$1.06
 $0.83
 $1.29
 $0.62
 $3.80
Diluted $1.09
 $0.87
 $1.36
 $0.70
 $4.02
$1.06
 $0.83
 $1.29
 $0.62
 $3.80
Income (loss) from discontinued operations attributable to Duke Energy Corporation common stockholders         
Income (Loss) from discontinued operations attributable to Duke Energy Corporation common stockholders         
Basic$0.13
 $(0.09) $(0.01) $(0.01) $0.03
$0.16
 $(0.05) $0.06
 $0.07
 $0.25
Diluted$0.13
 $(0.09) $(0.01) $(0.01) $0.03
$0.16
 $(0.05) $0.06
 $0.07
 $0.25
Net income attributable to Duke Energy Corporation common stockholders                       
Basic $1.22
 $0.78
 $1.35
 $0.69
 $4.05
$1.22
 $0.78
 $1.35
 $0.69
 $4.05
Diluted $1.22
 $0.78
 $1.35
 $0.69
 $4.05
$1.22
 $0.78
 $1.35
 $0.69
 $4.05
2014              
Operating revenues $6,263
 $5,708
 $6,395
 $5,559
 $23,925
Operating income 1,362
 1,289
 1,619
 988
 5,258
Income from continuing operations 750
 726
 891
 98
 2,465
(Loss) Income from discontinued operations, net of tax(843) (113) 378
 2
 (576)
Net (loss) income (93) 613
 1,269
 100
 1,889
Net (loss) income attributable to Duke Energy Corporation (97) 609
 1,274
 97
 1,883
Earnings per share:               
Income from continuing operations attributable to Duke Energy Corporation common stockholders               
Basic $1.05
 $1.02
 $1.25
 $0.14
 $3.46
Diluted $1.05
 $1.02
 $1.25
 $0.14
 $3.46
(Loss) Income from discontinued operations attributable to Duke Energy Corporation common stockholders         
Basic$(1.19) $(0.16) $0.55
 $
 $(0.80)
Diluted$(1.19) $(0.16) $0.55
 $
 $(0.80)
Net (loss) income attributable to Duke Energy Corporation common stockholders               
Basic $(0.14) $0.86
 $1.80
 $0.14
 $2.66
Diluted $(0.14) $0.86
 $1.80
 $0.14
 $2.66

230238


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.LLC
Combined Notes To Consolidated Financial Statements – (Continued)

The following table includes unusual or infrequently occurring items in each quarter during the two most recently completed fiscal years. All amounts discussed below are pretax.
 First
 Second
 Third
 Fourth
  
(in millions)  
Quarter
 Quarter
 Quarter
 Quarter
 Total
2015              
Costs to Achieve, Mergers$(21) $(22) $(24) $(30) $(97)
Edwardsport Settlement (see Note 4)
 
 (90) (3) (93)
Ash Basin Settlement and Penalties (see Note 5)
 
 (7) (7) (14)
State Tax Adjustment related to Midwest Generation Sale
 (41) 
 
 (41)
Cost Savings Initiatives (see Note 19)
 
 
 (142) (142)
Total  $(21) $(63) $(121) $(182) $(387)
2014              
Costs to Achieve, Mergers$(55) $(61) $(56) $(33) $(205)
Midwest Generation Impairment(1,287) 
 477
 (39) (849)
Coal Ash Plea Agreements Reserve (see Note 5)
 
 
 (102) (102)
International Tax Adjustment (see Note 22)
 
 
 (373) (373)
Asset Impairment(94) 
 
 
 (94)
Total  $(1,436) $(61) $421
 $(547) $(1,623)
DUKE ENERGY CAROLINAS
 First
 Second
 Third
 Fourth
  
(in millions)Quarter
 Quarter
 Quarter
 Quarter
 Total
2015              
Operating revenues$1,901
 $1,707
 $2,061
 $1,560
 $7,229
Operating income515
 483
 666
 296
 1,960
Net income292
 265
 383
 141
 1,081
2014              
Operating revenues$2,000
 $1,755
 $1,938
 $1,658
 $7,351
Operating income509
 438
 630
 318
 1,895
Net income286
 270
 377
 139
 1,072
The following table includes unusual or infrequently occurring items in each quarter during the two most recently completed fiscal years. All amounts discussed below are pretax.
 First
 Second
 Third
 Fourth
  
(in millions)  
Quarter
 Quarter
 Quarter
 Quarter
 Total
2015              
Costs to Achieve, Mergers$(9) $(11) $(11)
$(16) $(47)
Ash Basin Settlement and Penalties (see Note 5)
 
 (1) (7) (8)
Cost Savings Initiatives (see Note 19)
 
 
 (93) (93)
Total$(9) $(11) $(12) $(116) $(148)
2014              
Costs to Achieve, Mergers$(29) $(38) $(25) $(17) $(109)
Coal Ash Plea Agreements Reserve (see Note 5)
 
 
 (72) (72)
Total$(29) $(38) $(25) $(89) $(181)

231


 First
 Second
 Third
 Fourth
  
(in millions)  
Quarter
 Quarter
 Quarter
 Quarter
 Total
2016         
Costs to Achieve Mergers (see Note 2)$(120) $(111) $(84) $(208) $(523)
Commercial Renewables Impairment (see Note 12)
 
 (71) 
 (71)
Loss on Sale of International Disposal Group (see Note 2)
 
 
 (514) (514)
Impairment of Assets in Central America (see Note 2)
 (194) 
 
 (194)
Cost Savings Initiatives (see Note 19)(20) (24) (19) (29) (92)
Total$(140) $(329) $(174) $(751) $(1,394)
2015         
Costs to Achieve Mergers$(21) $(22) $(24) $(30) $(97)
Edwardsport Settlement (see Note 4)
 
 (90) (3) (93)
Ash Basin Settlement and Penalties (see Note 5)
 
 (7) (7) (14)
State Tax Adjustment related to Midwest Generation Sale
 (41) 
 
 (41)
Cost Savings Initiatives (see Note 19)
 
 
 (142) (142)
Total$(21) $(63) $(121) $(182) $(387)
PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

PROGRESS ENERGY
First
 Second
 Third
 Fourth
  First
 Second
 Third
 Fourth
  
(in millions) Quarter
 Quarter
 Quarter
 Quarter
 Total
Quarter
 Quarter
 Quarter
 Quarter
 Total
2016         
Operating revenues$1,740
 $1,675
 $2,226
 $1,681
 $7,322
Operating income481
 464
 815
 302
 2,062
Net income271
 261
 494
 140
 1,166
2015                       
Operating revenues $2,536
 $2,476
 $2,929
 $2,336
 $10,277
$1,901
 $1,707
 $2,061
 $1,560
 $7,229
Operating income 549
 504
 756
 351
 2,160
515
 483
 666
 296
 1,960
Income from continuing operations 264
 217
 452
 132
 1,065
Net income263
 217
 451
 131
 1,062
292
 265
 383
 141
 1,081
Net income attributable to Parent 260
 215
 448
 128
 1,051
2014              
Operating revenues $2,541
 $2,421
 $2,863
 $2,341
 $10,166
Operating income 477
 488
 665
 388
 2,018
Income from continuing operations 204
 207
 330
 139
 880
Net income203
 202
 330
 139
 874
Net income attributable to Parent 202
 202
 329
 136
 869
The following table includes unusual or infrequently occurring items in each quarter during the two most recently completed fiscal years. All amounts discussed below are pretax.
First
 Second
 Third
 Fourth
  First
 Second
 Third
 Fourth
  
(in millions)
Quarter
 Quarter
 Quarter
 Quarter
 Total
Quarter
 Quarter
 Quarter
 Quarter
 Total
2016         
Costs to Achieve Mergers$(11) $(12) $(13)
$(68) $(104)
Cost Savings Initiatives (see Note 19)(10) (10) (8) (11) (39)
Total$(21) $(22) $(21) $(79) $(143)
2015                       
Costs to Achieve, Mergers$(8) $(8) $(8) $(10) $(34)
Costs to Achieve Mergers$(9) $(11) $(11) $(16) $(47)
Ash Basin Settlement and Penalties (see Note 5)
 
 (6) 
 (6)
 
 (1) (7) (8)
Cost Savings Initiatives (see Note 19)
 
 
 (36) (36)
 
 
 (93) (93)
Total$(8) $(8) $(14) $(46) $(76)$(9) $(11) $(12) $(116) $(148)
2014              
Costs to Achieve, Mergers$(19) $(12) $(21) $(13) $(65)
Coal Ash Plea Agreements Reserve (see Note 5)
 
 
 (30) (30)
Total $(19) $(12) $(21) $(43) $(95)

239


PART II
DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

PROGRESS ENERGY
First
 Second
 Third
 Fourth
  First
 Second
 Third
 Fourth
  
(in millions)
Quarter
 Quarter
 Quarter
 Quarter
 Total
Quarter
 Quarter
 Quarter
 Quarter
 Total
2016         
Operating revenues$2,332
 $2,348
 $2,965
 $2,208
 $9,853
Operating income475
 560
 814
 292
 2,141
Income from continuing operations212
 274
 449
 104
 1,039
Net income212
 274
 449
 106
 1,041
Net income attributable to Parent209
 272
 446
 104
 1,031
2015                       
Operating revenues$1,449
 $1,193
 $1,488
 $1,160
 $5,290
$2,536
 $2,476
 $2,929
 $2,336
 $10,277
Operating income316
 184
 394
 130
 1,024
549
 504
 756
 351
 2,160
Income from continuing operations264
 217
 452
 132
 1,065
Net income183
 85
 229
 69
 566
263
 217
 451
 131
 1,062
2014              
Operating revenues$1,422
 $1,191
 $1,367
 $1,196
 $5,176
Operating income258
 212
 285
 180
 935
Net income133
 101
 157
 76
 467
Net income attributable to Parent260
 215
 448
 128
 1,051
The following table includes unusual or infrequently occurring items in each quarter during the two most recently completed fiscal years. All amounts discussed below are pretax.
First
 Second
 Third
 Fourth
  First
 Second
 Third
 Fourth
  
(in millions)
Quarter
 Quarter
 Quarter
 Quarter
 Total
Quarter
 Quarter
 Quarter
 Quarter
 Total
2016         
Costs to Achieve Mergers$(7) $(8) $(10) $(44) $(69)
Cost Savings Initiatives (see Note 19)(8) (8) (10) (14) (40)
Total$(15) $(16) $(20) $(58) $(109)
2015                       
Costs to Achieve, Mergers$(5) $(5) $(6) $(6) $(22)
Costs to Achieve Mergers$(8) $(8) $(8) $(10) $(34)
Ash Basin Settlement and Penalties (see Note 5)
 
 (6) 
 (6)
 
 (6) 
 (6)
Cost Savings Initiatives (see Note 19)
 
 
 (28) (28)
 
 
 (36) (36)
Total$(5)
$(5)
$(12)
$(34)
$(56)$(8) $(8) $(14) $(46) $(76)
2014              
Costs to Achieve, Mergers$(14) $(3) $(15) $(10) $(42)
Coal Ash Plea Agreements Reserve (see Note 5)
 
 
 (30) (30)
Total$(14) $(3) $(15) $(40) $(72)

232


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

DUKE ENERGY FLORIDAPROGRESS
First
 Second
 Third
 Fourth
  First
 Second
 Third
 Fourth
  
(in millions)
Quarter
 Quarter
 Quarter
 Quarter
 Total
Quarter
 Quarter
 Quarter
 Quarter
 Total
2016         
Operating revenues$1,307
 $1,213
 $1,583
 $1,174
 $5,277
Operating income258
 255
 438
 135
 1,086
Net income137
 131
 271
 60
 599
2015                       
Operating revenues$1,086
 $1,281
 $1,436
 $1,174
 $4,977
$1,449
 $1,193
 $1,488
 $1,160
 $5,290
Operating income227
 315
 357
 216
 1,115
316
 184
 394
 130
 1,024
Net income113
 165
 216
 105
 599
183
 85
 229
 69
 566
2014              
Operating revenues$1,116
 $1,225
 $1,491
 $1,143
 $4,975
Operating income219
 276
 378
 205
 1,078
Net income108
 142
 205
 93
 548
The following table includes unusual or infrequently occurring items in each quarter during the two most recently completed fiscal years. All amounts discussed below are pretax.
First
 Second
 Third
 Fourth
  First
 Second
 Third
 Fourth
  
(in millions)
Quarter
 Quarter
 Quarter
 Quarter
 Total
Quarter
 Quarter
 Quarter
 Quarter
 Total
2015              
Costs to Achieve, Mergers$(3) $(3) $(3) $(4) $(13)
2016         
Costs to Achieve Mergers$(5) $(5) $(6) $(40) $(56)
Cost Savings Initiatives (see Note 19)
 
 
 (8) (8)(5) (5) (7) (6) (23)
Total$(3) $(3) $(3) $(12) $(21)$(10)
$(10)
$(13)
$(46)
$(79)
2014              
Costs to Achieve, Mergers$(5) $(9) $(6) $(3) $(23)
2015         
Costs to Achieve Mergers$(5) $(5) $(6) $(6) $(22)
Ash Basin Settlement and Penalties (see Note 5)
 
 (6) 
 (6)
Cost Savings Initiatives (see Note 19)
 
 
 (28) (28)
Total$(5) $(5) $(12) $(34) $(56)

240


PART II
DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

DUKE ENERGY OHIOFLORIDA
 First
 Second
 Third
 Fourth
  
(in millions)  
Quarter
 Quarter
 Quarter
 Quarter
 Total
2015              
Operating revenues$586
 $405
 $462
 $452
 $1,905
Operating income111
 43
 76
 73
 303
Income (loss) from discontinued operations, net of tax90
 (65) (2) 
 23
Net income (loss)149
 (52) 32
 43
 172
2014              
Operating revenues$575
 $412
 $446
 $480
 $1,913
Operating (loss) income(7) 60
 58
 76
 187
(Loss) Income from discontinued operations, net of tax(875) (135) 413
 34
 (563)
Net (loss) income(890) (107) 439
 63
 (495)
 First
 Second
 Third
 Fourth
  
(in millions)  
Quarter
 Quarter
 Quarter
 Quarter
 Total
2016         
Operating revenues$1,024
 $1,133
 $1,381
 $1,030
 $4,568
Operating income213
 300
 373
 155
 1,041
Net income110
 171
 206
 64
 551
2015         
Operating revenues$1,086
 $1,281
 $1,436
 $1,174
 $4,977
Operating income227
 315
 357
 216
 1,115
Net income113
 165
 216
 105
 599
The following table includes unusual or infrequently occurring items in each quarter during the two most recently completed fiscal years. All amounts discussed below are pretax.
First
 Second
 Third
 Fourth
  First
 Second
 Third
 Fourth
  
(in millions)
Quarter
 Quarter
 Quarter
 Quarter
 Total
Quarter
 Quarter
 Quarter
 Quarter
 Total
2015              
Costs to Achieve, Mergers$(1) $(1) $(1) $(1) $(4)
2016         
Costs to Achieve Mergers$(2) $(3) $(4) $(4) $(13)
Cost Savings Initiatives (see Note 19)
 
 
 (2) (2)(2) (3) (3) (9) (17)
Total$(1) $(1) $(1) $(3) $(6)$(4) $(6) $(7) $(13) $(30)
2014              
Costs to Achieve, Mergers$(2) $(4) $(3) $(2) $(11)
Midwest Generation Impairment(1,318) 
 477
 (39) (880)
Asset Impairment(94) 
 
 
 (94)
2015         
Costs to Achieve Mergers$(3) $(3) $(3) $(4) $(13)
Cost Savings Initiatives (see Note 19)
 
 
 (8) (8)
Total$(1,414) $(4) $474
 $(41) $(985)$(3) $(3) $(3) $(12) $(21)

233


PART II
DUKE ENERGY CORPORATION - DUKE ENERGY CAROLINAS, LLC - PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC - DUKE ENERGY OHIO, INC. - DUKE ENERGY INDIANA, INC.
Combined Notes To Consolidated Financial Statements – (Continued)

DUKE ENERGY INDIANAOHIO
First
 Second
 Third
 Fourth
  First
 Second
 Third
 Fourth
  
(in millions)
Quarter
 Quarter
 Quarter
 Quarter
 Total
Quarter
 Quarter
 Quarter
 Quarter
 Total
2016         
Operating revenues$516
 $428
 $489
 $511
 $1,944
Operating income96
 55
 106
 90
 347
Income from discontinued operations, net of tax2
 
 34
 
 36
Net income59
 23
 89
 57
 228
2015                       
Operating revenues$788
 $686
 $749
 $667
 $2,890
$586
 $405
 $462
 $452
 $1,905
Operating income210
 146
 117
 171
 644
111
 43
 76
 73
 303
Net income108
 68
 46
 94
 316
2014              
Operating revenues$845
 $748
 $790
 $792
 $3,175
Operating income215
 178
 182
 130
 705
Net income113
 87
 101
 58
 359
Income (Loss) from discontinued operations, net of tax90
 (65) (2) 
 23
Net income (loss)149
 (52) 32
 43
 172
The following table includes unusual or infrequently occurring items in each quarter during the two most recently completed fiscal years. All amounts discussed below are pretax.
First
 Second
 Third
 Fourth
  First
 Second
 Third
 Fourth
  
(in millions)
Quarter
 Quarter
 Quarter
 Quarter
 Total
Quarter
 Quarter
 Quarter
 Quarter
 Total
2015              
Costs to Achieve, Mergers$(2) $(1) $(2) $(2) $(7)
Edwardsport Settlement (see Note 4)
 
 (90) (3) (93)
2016         
Costs to Achieve Mergers$(1) $(1) $(2) $(2) $(6)
Cost Savings Initiatives (see Note 19)
 
 
 (6) (6)(1) (1) 
 (1) (3)
Total$(2) $(1) $(92) $(11) $(106)$(2) $(2) $(2) $(3) $(9)
2014              
Costs to Achieve, Mergers$(2) $(5) $(3) $(2) $(12)
2015         
Costs to Achieve Mergers$(1) $(1) $(1) $(1) $(4)
Cost Savings Initiatives (see Note 19)
 
 
 (2) (2)
Total$(1) $(1) $(1) $(3) $(6)

234241


PART II
DUKE ENERGY CORPORATION – DUKE ENERGY CAROLINAS, LLC – PROGRESS ENERGY, INC. –
DUKE ENERGY PROGRESS, LLC – DUKE ENERGY FLORIDA, LLC – DUKE ENERGY OHIO, INC. – DUKE ENERGY INDIANA, LLC
Combined Notes To Consolidated Financial Statements – (Continued)

DUKE ENERGY INDIANA
 First
 Second
 Third
 Fourth
  
(in millions)  
Quarter
 Quarter
 Quarter
 Quarter
 Total
2016         
Operating revenues$714
 $702
 $809
 $733
 $2,958
Operating income176
 174
 239
 176
 765
Net income95
 85
 129
 72
 381
2015         
Operating revenues$788
 $686
 $749
 $667
 $2,890
Operating income210
 146
 117
 171
 644
Net income108
 68
 46
 94
 316
The following table includes unusual or infrequently occurring items in each quarter during the two most recently completed fiscal years. All amounts discussed below are pretax.
 First
 Second
 Third
 Fourth
  
(in millions)  
Quarter
 Quarter
 Quarter
 Quarter
 Total
2016         
Costs to Achieve Mergers$(1) $(2) $(3) $(3) $(9)
Cost Savings Initiatives (see Note 19)(1) (4) (1) (1) (7)
Total$(2) $(6) $(4) $(4) $(16)
2015         
Costs to Achieve Mergers$(2) $(1) $(2) $(2) $(7)
Edwardsport Settlement (see Note 4)
 
 (90) (3) (93)
Cost Savings Initiatives (see Note 19)
 
 
 (6) (6)
Total$(2) $(1) $(92) $(11) $(106)

242


PART II

ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE
 
None.
ITEM 9A. CONTROLS AND PROCEDURES
 
Disclosure Controls and Procedures
Disclosure controls and procedures are controls and other procedures that are designed to ensure that information required to be disclosed by the Duke Energy Registrants in the reports they file or submit under the Securities Exchange Act of 1934 (Exchange Act) is recorded, processed, summarized and reported, within the time periods specified by the SEC rules and forms.
Disclosure controls and procedures include, without limitation, controls and procedures designed to provide reasonable assurance that information required to be disclosed by the Duke Energy Registrants in the reports they file or submit under the Exchange Act is accumulated and communicated to management, including the Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure.
Under the supervision and with the participation of management, including the Chief Executive Officer and Chief Financial Officer, the Duke Energy Registrants have evaluated the effectiveness of their disclosure controls and procedures (as such term is defined in Rule 13a-15(e) and 15d-15(e) under the Exchange Act) as of December 31, 2015,2016, and, based upon this evaluation, the Chief Executive Officer and Chief Financial Officer have concluded that these controls and procedures are effective in providing reasonable assurance of compliance.
Changes in Internal Control Over Financial Reporting
Under the supervision and with the participation of management, including the Chief Executive Officer and Chief Financial Officer, the Duke Energy Registrants have evaluated changes in internal control over financial reporting (as such term is defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) that occurred during the fiscal quarter ended December 31, 2015,2016, and have concluded no change has materially affected, or is reasonably likely to materially affect, internal control over financial reporting.
Management’s Annual Report On Internal Control Over Financial Reporting
The Duke Energy Registrants’ management is responsible for establishing and maintaining an adequate system of internal control over financial reporting, as such term is defined in Exchange Act Rules 13a−15(f) and 15d−15(f). The Duke Energy Registrants’ internal control system was designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes, in accordance with generally accepted accounting principles in the United States. Due to inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness of the internal control over financial reporting to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with policies and procedures may deteriorate.
The Duke Energy Registrants’ management, including their Chief Executive Officer and Chief Financial Officer, has conducted an evaluation of the effectiveness of their internal control over financial reporting as of December 31, 2015,2016, based on the framework in the Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on that evaluation, management concluded that its internal controls over financial reporting were effective as of December 31, 2015.2016.
Deloitte & Touche LLP, Duke Energy’s independent registered public accounting firm, has issued an attestation report on the effectiveness of Duke Energy’s internal control over financial reporting. This attestation report is included in Part II, Item 8 of this Form 10-K. This report is not applicable to the Subsidiary Registrants as these companies are not accelerated or large accelerated filers.

235243


PART III

 
ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE
 
Information regarding Duke Energy's Executive Officers is set forth in Part I, Item 1, "Business – Executive Officers of the Registrants," in this Annual Report on Form 10-K. Duke Energy will provide information that is responsive to the remainder of this Item 10 in its definitive proxy statement or in an amendment to this Annual Report not later than 120 days after the end of the fiscal year covered by this Annual Report. That information is incorporated in this Item 10 by reference.
ITEM 11. EXECUTIVE COMPENSATION
 
Duke Energy will provide information that is responsive to this Item 11 in its definitive proxy statement or in an amendment to this Annual Report not later than 120 days after the end of the fiscal year covered by this Annual Report. That information is incorporated in this Item 11 by reference.
ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS
 
Equity Compensation Plan Information
The following table shows information as of December 31, 2016, about securities to be issued upon exercise of outstanding options, warrants and rights under Duke Energy's equity compensation plans, along with the weighted average exercise price of the outstanding options, warrants and rights and the number of securities remaining available for future issuance under the plans.
Plan Category
Number of securities
to be issued upon
exercise of
outstanding options,
warrants and rights
(a)
Weighted average
exercise price of
outstanding options,
warrants and rights
(b)(1)
Number of securities remaining available for future issuance under equity compensation plans (excluding securities reflected in column (a))
(c)
Equity compensation plans approved by security holders3,224,537
(2) 
n/a8,661,659
(3) 
Equity compensation plans not approved by security holders191,181
(4) 
n/an/a
(5) 
Total3,415,718
 n/a8,661,659 
(1)    As of December 31, 2016, no options were outstanding under equity compensation plans.
(2)Includes restricted stock units and performance shares (assuming the maximum payout level) granted under the Duke Energy Corporation 2010 Long-Term Incentive Plan or the Duke Energy Corporation 2015 Long-Term Incentive Plan, as well as shares that could be payable with respect to certain compensation deferred under the Duke Energy Corporation Executive Savings Plan (Executive Savings Plan) and the Duke Energy Corporation Directors' Savings Plan (Directors' Savings Plan).
(3)    Includes shares remaining for issuance pursuant to stock awards under the Duke Energy will provide information that is responsiveCorporation 2015 Long-Term Incentive Plan.
(4)Includes shares that could be payable with respect to certain compensation deferred under the Executive Savings Plan and the Directors' Savings Plan, each of which is a non-qualified deferred compensation plan described in more detail below. Upon the acquisition of Piedmont Natural Gas Company, Inc., performance shares granted prior to the acquisition under the Piedmont Natural Gas Company, Inc. Incentive Compensation Plan were converted to restricted stock units payable in shares of Duke Energy common stock. As of December 31, 2016, 109,023 such restricted stock units were outstanding. Following the acquisition, no further stock awards were permitted to be granted under the Piedmont Natural Gas Company, Inc. Incentive Compensation Plan. These converted awards are not listed in the table above.
(5)The number of shares remaining available for future issuance under equity compensation plans not approved by security holders cannot be determined because it is based on the amount of future voluntary deferrals, if any, under the Executive Savings Plan and the Directors' Savings Plan.
Under the Executive Savings Plan, participants can elect to this Item 12defer a portion of their base salary and short-term incentive compensation. Participants also receive a company matching contribution in its definitive proxy statement or in an amendment to this Annual Report not later than 120 days after the endexcess of the fiscal year coveredcontribution limits prescribed by this Annual Report. That informationthe Internal Revenue Code under the Duke Energy Retirement Savings Plan, which is incorporatedthe 401(k) plan in this Item 12which the named executive officers participate. In general, payments are made following the termination of employment or death in the form of a lump sum or installments, as selected by reference.the participant. Participants may direct the deemed investment of base deferrals, short-term incentive compensation deferrals and matching contributions among investment options available under the Duke Energy Retirement Savings Plan, including the Duke Energy Common Stock Fund. Participants may change their investment elections on a daily basis. Deferrals of equity awards are credited with earnings and losses based on the performance of the Duke Energy Common Stock Fund. The benefits payable under the plan are unfunded and subject to claims of Duke Energy's creditors.
Under the Directors' Savings Plan, outside directors may elect to defer all or a portion of their annual compensation, consisting of retainers and attendance fees. Deferred amounts are credited to an unfunded account, the balance of which is adjusted for the performance of phantom investment options, including the Duke Energy Common Stock Fund, as elected by the director, and generally are paid when the director terminates his or her service from the Board of Directors.

244


PART III

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS AND DIRECTOR INDEPENDENCE
 
Duke Energy will provide information that is responsive to this Item 13 in its definitive proxy statement or in an amendment to this Annual Report not later than 120 days after the end of the fiscal year covered by this Annual Report. That information is incorporated in this Item 13 by reference.
ITEM 14. PRINCIPAL ACCOUNTING FEES AND SERVICES
 
Deloitte & Touche LLP and the member firms of Deloitte Touche Tohmatsu and their respective affiliates (collectively, Deloitte) provided professional services to the Duke Energy Registrants. The following tables present the Deloitte fees for services rendered to the Duke Energy Registrants during 20152016 and 2014.2015.
Year Ended December 31, 2015Year Ended December 31, 2016
  Duke
   Duke
 Duke
 Duke
 Duke
  Duke
   Duke
 Duke
 Duke
 Duke
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)
Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Types of Fees
                                 
Audit Fees(a)
$12.5
 $4.6
 $5.1
 $2.9
 $2.2
 $0.8
 $1.3
$13.8
 $4.9
 $5.2
 $3.0
 $2.2
 $0.8
 $1.4
Audit-Related Fees(b)
2.7
 
 
 
 
 1.2
 
0.7
 
 
 
 
 
 
Tax Fees(c)
0.2
 0.1
 
 
 
 
 
0.4
 0.1
 0.1
 0.1
 
 
 0.1
Other Fees0.2
 0.1
 0.1
 0.1
 
 
 
Total Fees $15.4
 $4.7
 $5.1
 $2.9
 $2.2
 $2.0
 $1.3
$15.1
 $5.1
 $5.4
 $3.2
 $2.2
 $0.8
 $1.5
Year Ended December 31, 2014Year Ended December 31, 2015
  Duke
   Duke
 Duke
 Duke
 Duke
  Duke
   Duke
 Duke
 Duke
 Duke
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
Duke
 Energy
 Progress
 Energy
 Energy
 Energy
 Energy
(in millions)
Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Energy
 Carolinas
 Energy
 Progress
 Florida
 Ohio
 Indiana
Types of Fees
                                 
Audit Fees(a)
$12.0
 $4.2
 $4.6
 $2.6
 $2.0
 $1.2
 $1.2
$12.4
 $4.6
 $5.1
 $2.9
 $2.2
 $0.8
 $1.3
Audit-Related Fees(b)
4.2
 0.1
 0.1
 0.1
 
 2.6
 
2.4
 
 
 
 
 1.2
 
Tax Fees(c)
0.7
 0.3
 0.3
 0.2
 0.1
 0.1
 0.1
0.2
 0.1
 
 
 
 
 
Other Fees0.1
 
 
 
 
 
 
Total Fees $16.9
 $4.6
 $5.0
 $2.9
 $2.1
 $3.9
 $1.3
$15.1
 $4.7
 $5.1
 $2.9
 $2.2
 $2.0
 $1.3
(a)Audit Fees are fees billed or expected to be billed for professional services for the audit of the Duke Energy Registrants’ financial statements included in the annual reportAnnual Report on Form 10-K and the review of financial statements included in quarterly reports on Form 10‑Q, for services that are normally provided by Deloitte in connection with statutory, regulatory or other filings or engagements, or for any other service performed by Deloitte to comply with generally accepted auditing standards. Total Fees for Duke Energy in 2016 include amounts for audit work related to Piedmont. For additional information related to acquisition of Piedmont see Note 2 to the Consolidated Financial Statements, “Acquisitions and Dispositions.”
(b)Audit-Related Fees are fees billed, or expected to be billed, for assurance and related services that are reasonably related to the performance of an audit or review of financial statements, including assistance with acquisitions and divestitures and internal control reviews.
(c)Tax Fees are fees for tax return assistance and preparation, tax examination assistance and professional services related to tax planning and tax strategy.

236


PART III

To safeguard the continued independence of the independent auditor, the Audit Committee of the Board of Directors (Audit Committee) of Duke Energy adopted a policy that all services provided by the independent auditor require preapproval by the Audit Committee. Pursuant to the policy, certain audit services, audit-related services, tax services and other services have been specifically preapproved up to fee limits. In the event the cost of any of these services may exceed the fee limits, the Audit Committee must preapprove the service. All services performed in 20152016 and 20142015 by the independent accountant were approved by the Audit Committee pursuant to their preapproval policy.

237245


PART IV

 
ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES
 
(a)Consolidated Financial Statements, Supplemental Financial Data and Supplemental Schedules included in Part II of this annual report are as follows:
Duke Energy Corporation
Consolidated Financial Statements
Consolidated Statements of Operations for the Years Ended December 31, 2016, 2015 2014 and 20132014
Consolidated Statements of Comprehensive Income for the Years Ended December 31, 2016, 2015 2014 and 20132014
Consolidated Balance Sheets as of December 31, 20152016 and 20142015
Consolidated Statements of Cash Flows for the Years Ended December 31, 2016, 2015 2014 and 20132014
Consolidated Statements of Changes in Equity for the Years Ended December 31, 2016, 2015 2014 and 20132014
Notes to the Consolidated Financial Statements
Quarterly Financial Data, (unaudited, included in Note 25 to the Consolidated Financial Statements)
Report of Independent Registered Public Accounting Firm
All other schedules are omitted because they are not required, or because the required information is included in the Consolidated Financial Statements or Notes.
Duke Energy Carolinas, LLC
Consolidated Financial Statements
Consolidated Statements of Operations and Comprehensive Income for the Years Ended December 31, 2016, 2015 2014 and 20132014
Consolidated Balance Sheets as of December 31, 20152016 and 20142015
Consolidated Statements of Cash Flows for the Years Ended December 31, 2016, 2015 2014 and 20132014
Consolidated Statements of Changes in Equity for the Years Ended December 31, 2016, 2015 2014 and 20132014
Notes to the Consolidated Financial Statements
Quarterly Financial Data, (unaudited, included in Note 25 to the Consolidated Financial Statements)
Report of Independent Registered Public Accounting Firm
All other schedules are omitted because they are not required, or because the required information is included in the Consolidated Financial Statements or Notes.
Progress Energy, Inc.
Consolidated Financial Statements
Consolidated Statements of Operations and Comprehensive Income for the Years Ended December 31, 2016, 2015 2014 and 20132014
Consolidated Balance Sheets as of December 31, 20152016 and 20142015
Consolidated Statements of Cash Flows for the Years Ended December 31, 2016, 2015 2014 and 20132014
Consolidated Statements of Changes in Equity for the Years Ended December 31, 2016, 2015 2014 and 20132014
Notes to the Consolidated Financial Statements
Quarterly Financial Data, (unaudited, included in Note 25 to the Consolidated Financial Statements)
Report of Independent Registered Public Accounting Firm
All other schedules are omitted because they are not required, or because the required information is included in the Consolidated Financial Statements or Notes.
Duke Energy Progress, LLC (formerly Duke Energy Progress, Inc.)
Consolidated Financial Statements
Consolidated Statements of Operations and Comprehensive Income for the Years Ended December 31, 2016, 2015 2014 and 20132014
Consolidated Balance Sheets as of December 31, 20152016 and 20142015
Consolidated Statements of Cash Flows for the Years Ended December 31, 2016, 2015 2014 and 20132014
Consolidated Statements of Changes in Equity for the Years Ended December 31, 2016, 2015 2014 and 20132014
Notes to the Consolidated Financial Statements
Quarterly Financial Data, (unaudited, included in Note 25 to the Consolidated Financial Statements)
Report of Independent Registered Public Accounting Firm
All other schedules are omitted because they are not required, or because the required information is included in the Consolidated Financial Statements or Notes.
Duke Energy Florida, LLC (formerly Duke Energy Florida, Inc.)
Consolidated Financial Statements
Consolidated Statements of Operations and Comprehensive Income for the Years Ended December 31, 2016, 2015 2014 and 20132014
Consolidated Balance Sheets as of December 31, 20152016 and 20142015
Consolidated Statements of Cash Flows for the Years Ended December 31, 2016, 2015 2014 and 20132014
Consolidated Statements of Changes in Equity for the Years Ended December 31, 2016, 2015 2014 and 20132014
Notes to the Consolidated Financial Statements
Quarterly Financial Data, (unaudited, included in Note 25 to the Consolidated Financial Statements)
Report of Independent Registered Public Accounting Firm
All other schedules are omitted because they are not required, or because the required information is included in the Consolidated Financial Statements or Notes.

238246


PART IV

Duke Energy Ohio, Inc.
Consolidated Financial Statements
Consolidated Statements of Operations and Comprehensive Income for the Years Ended December 31, 2016, 2015 2014 and 20132014
Consolidated Balance Sheets as of December 31, 20152016 and 20142015
Consolidated Statements of Cash Flows for the Years Ended December 31, 2016, 2015 2014 and 20132014
Consolidated Statements of Changes in Equity for the Years Ended December 31, 2016, 2015 2014 and 20132014
Notes to the Consolidated Financial Statements
Quarterly Financial Data, (unaudited, included in Note 25 to the Consolidated Financial Statements)
Report of Independent Registered Public Accounting Firm
All other schedules are omitted because they are not required, or because the required information is included in the Consolidated Financial Statements or Notes.
Duke Energy Indiana, Inc. (subsequently Duke Energy Indiana, LLC)LLC
Consolidated Financial Statements
Consolidated Statements of Operations and Comprehensive Income for the Years Ended December 31, 2016, 2015 2014 and 20132014
Consolidated Balance Sheets as of December 31, 20152016 and 20142015
Consolidated Statements of Cash Flows for the Years Ended December 31, 2016, 2015 2014 and 20132014
Consolidated Statements of Changes in Equity for the Years Ended December 31, 2016, 2015 2014 and 20132014
Notes to the Consolidated Financial Statements
Quarterly Financial Data, (unaudited, included in Note 25 to the Consolidated Financial Statements)
Report of Independent Registered Public Accounting Firm
All other schedules are omitted because they are not required, or because the required information is included in the Consolidated Financial Statements or Notes.
(b) Exhibits – See Exhibit Index immediately following the signature page.

239247


PART IV

SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrants have duly caused this report to be signed on their behalf by the undersigned, thereunto duly authorized.
Date: February 25, 201624, 2017
 
DUKE ENERGY CORPORATION
(Registrant)
 
 By:/s/ LYNN J. GOOD
   
Lynn J. Good
Chairman, President and Chief Executive Officer
Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the date indicated.
(i)/s/ LYNN J. GOOD    
 Lynn J. Good 
 Chairman, President and Chief Executive Officer (Principal Executive Officer and Director)
   
(ii)/s/ STEVEN K. YOUNG    
 Steven K. Young 
 Executive Vice President and Chief Financial Officer (Principal Financial Officer)
   
(iii)/s/ BRIAN D. SAVOYWILLIAM E. CURRENS JR.    
 Brian D. SavoyWilliam E. Currens Jr. 
 Senior Vice President, Chief Accounting Officer and Controller (Principal Accounting Officer)
    
(iv)Directors:  
    
 Michael J. Angelakis*John T. Herron*William E. Kennard* 
    
 Michael G. Browning*James B. Hyler, Jr.*
Harris E. DeLoach, Jr.*William E. Kennard*Marie McKee* 
    
 Daniel R. DiMicco*E. Marie McKee*Charles W. Moorman IV* 
    
 John H. Forsgren*RichardCarlos A. Meserve*Saladrigas* 
    
 Ann Maynard Gray*JamesThomas E. Skains*
John T. Rhodes*Herron*William E. Webster, Jr.* 
    
 James H. Hance,B. Hyler, Jr.*Carlos A. Saladrigas*
  
Steven K. Young, by signing his name hereto, does hereby sign this document on behalf of the registrant and on behalf of each of the above-named persons previously indicated by asterisk (*) pursuant to a power of attorney duly executed by the registrant and such persons, filed with the Securities and Exchange Commission as an exhibit hereto.
   
 By:/s/ STEVEN K. YOUNG
 Attorney-In-Fact 
     
 Date: February 25, 201624, 2017

240248


PART IV

SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
Date: February 25, 201624, 2017
 
DUKE ENERGY CAROLINAS, LLC
(Registrant)
 
 By:/s/ LYNN J. GOOD
   
Lynn J. Good
Chief Executive Officer
Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the date indicated.
   
(i)/s/ LYNN J. GOOD 
 Lynn J. Good 
 Chief Executive Officer (Principal Executive Officer)
   
(ii)/s/ STEVEN K.YOUNGK. YOUNG  
 Steven K. Young 
 Executive Vice President and Chief Financial Officer (Principal Financial Officer)
   
(iii)/s/ BRIAN D. SAVOY WILLIAM E. CURRENS JR. 
 Brian D. SavoyWilliam E. Currens Jr. 
 Senior Vice President, Chief Accounting Officer and Controller (Principal Accounting Officer)
   
(iv)Directors: 
   
 /s/ LYNN J. GOOD  
 Lynn J. Good 
   
 /s/ DHIAA M. JAMIL 
 Dhiaa M. Jamil 
   
 /s/ LLOYD M. YATES  
 Lloyd M. Yates 
Date: February 25, 201624, 2017

241249


PART IV

SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
Date: February 25, 201624, 2017
 
PROGRESS ENERGY, INC.
(Registrant)
 
 By:/s/ LYNN J. GOOD
   
Lynn J. Good
Chief Executive Officer
Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the date indicated.
   
(i)/s/ LYNN J. GOOD  
 Lynn J. Good 
 Chief Executive Officer (Principal Executive Officer)
   
(ii)/s/ STEVEN K. YOUNG 
 Steven K. Young 
 Executive Vice President and Chief Financial Officer (Principal Financial Officer)
   
(iii)/s/ BRIAN D. SAVOYWILLIAM E. CURRENS JR. 
 Brian D. SavoyWilliam E. Currens Jr. 
 Senior Vice President, Chief Accounting Officer and Controller (Principal Accounting Officer)
   
(iv)Directors: 
   
 /s/ LYNN J. GOOD 
 Lynn J. Good 
   
 /s/ JULIA S. JANSON 
 Julia S. Janson 
   
   
Date: February 25, 201624, 2017


242250


PART IV

SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
Date: February 25, 201624, 2017
 
DUKE ENERGY PROGRESS, LLC
(Registrant)
 
 By:/s/ LYNN J. GOOD
   
Lynn J. Good
Chief Executive Officer
Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the date indicated.
(i)/s/ LYNN J. GOOD 
 Lynn J. Good 
 Chief Executive Officer (Principal Executive Officer)
   
(ii)/s/ STEVEN K. YOUNG 
 Steven K. Young 
 Executive Vice President and Chief Financial Officer (Principal Financial Officer)
   
(iii)/s/ BRIAN D. SAVOYWILLIAM E. CURRENS JR. 
 Brian D. SavoyWilliam E. Currens Jr. 
 Senior Vice President, Chief Accounting Officer and Controller (Principal Accounting Officer)
   
(iv)Directors: 
   
 /s/ DOUGLAS F ESAMANN 
 Douglas F Esamann 
   
 /s/ LYNN J. GOOD 
 Lynn J. Good 
   
 /s/ DHIAA M. JAMIL 
 Dhiaa M. Jamil 
   
 /s/ JULIA S. JANSON 
 Julia S. Janson 
   
 /s/ LLOYD M. YATES 
 Lloyd M. Yates 
Date: February 25, 201624, 2017

243251


PART IV

SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
Date: February 25, 201624, 2017
 
DUKE ENERGY FLORIDA, LLC
(Registrant)
 
 By:/s/ LYNN J. GOOD
   
Lynn J. Good
Chief Executive Officer
 
Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the date indicated.
   
(i)/s/ LYNN J. GOOD 
 Lynn J. Good 
 Chief Executive Officer (Principal Executive Officer)
   
(ii)/s/ STEVEN K. YOUNG  
 Steven K. Young 
 Executive Vice President and Chief Financial Officer (Principal Financial Officer)
   
(iii)/s/ BRIAN D. SAVOY WILLIAM E. CURRENS JR. 
 Brian D. SavoyWilliam E. Currens Jr. 
 Senior Vice President, Chief Accounting Officer and Controller (Principal Accounting Officer)
   
(iv)Directors: 
   
 /s/ DOUGLAS F ESAMANN 
  Douglas F Esamann 
   
 /s/ LYNN J. GOOD 
 Lynn J. Good 
   
 /s/ DHIAA M. JAMIL 
 Dhiaa M. Jamil 
   
 /s/ JULIA S. JANSON 
 Julia S. Janson 
   
 /s/ LLOYD M. YATES 
 Lloyd M. Yates 
Date: February 25, 201624, 2017

244252


PART IV

SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
Date: February 25, 201624, 2017
 
DUKE ENERGY OHIO, INC.
(Registrant)
 
 By:/s/ LYNN J. GOOD
   
Lynn J. Good
Chief Executive Officer
Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the date indicated.
   
(i)/s/ LYNN J. GOOD 
 Lynn J. Good 
 Chief Executive Officer (Principal Executive Officer)
   
(ii)/s/ STEVEN K. YOUNG  
 Steven K. Young 
 Executive Vice President and Chief Financial Officer (Principal Financial Officer)
   
(iii)/s/ BRIAN D. SAVOYWILLIAM E. CURRENS JR. 
 Brian D. SavoyWilliam E. Currens Jr. 
 Senior Vice President, Chief Accounting Officer and Controller (Principal Accounting Officer)
   
(iv)Directors: 
   
 /s/ DOUGLAS F ESAMANN 
 Douglas F Esamann 
   
 /s/ LYNN J. GOOD 
 Lynn J. Good 
   
 /s/ DHIAA M. JAMIL 
 Dhiaa M. Jamil 
Date: February 25, 201624, 2017

245253


PART IV

SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
Date: February 25, 201624, 2017
 
DUKE ENERGY INDIANA, LLC
(Registrant)
 
 By:/s/ LYNN J. GOOD
   
Lynn J. Good
Chief Executive Officer
Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the date indicated.
   
(i)/s/ LYNN J. GOOD 
 Lynn J. Good 
 Chief Executive Officer (Principal Executive Officer)
   
(ii)/s/ STEVEN K. YOUNG 
 Steven K. Young 
 Executive Vice President and Chief Financial Officer (Principal Financial Officer)
   
(iii)/s/ BRIAN. D. SAVOYWILLIAM E. CURRENS JR. 
 Brian D. SavoyWilliam E. Currens Jr. 
 Senior Vice President, Chief Accounting Officer and Controller (Principal Accounting Officer)
   
(iv)Directors: 
   
 /s/ MELODY BIRMINGHAM-BYRD 
 Melody Birmingham-Byrd 
   
 /s/ DOUGLAS F ESAMANN 
 Douglas F Esamann 
   
 /s/ KELLEY A. KARN 
 Kelley A. Karn 
Date: February 25, 201624, 2017

246254


PART IV

EXHIBIT INDEX
Exhibits filed herewithin are designated by an asterisk (*). All exhibits not so designated are incorporated by reference to a prior filing, as indicated. Items constituting management contracts or compensatory plans or arrangements are designated by a double asterisk (**). The Company agrees to furnish upon request to the Commission a copy of any omitted schedules or exhibits upon request on all items designated by a triple asterisk (***). A management contract or compensation plan or arrangement under legacy Progress Energy that is required to be filed as an exhibit to this report pursuant to Item 15(b) of Form 10-K is designated by a plus (+).
    Duke   Duke Duke Duke Duke
Exhibit Duke Energy Progress Energy Energy Energy Energy
Number Energy Carolinas Energy Progress Florida Ohio Indiana
2.1Agreement and Plan of Merger between Duke Energy Corporation, Diamond Acquisition Corporation and Progress Energy, Inc., dated as of January 8, 2011 (incorporated by reference to Exhibit 2.1 to Duke Energy Corporation's Current Report on Form 8-K filed on January 11, 2011, File No. 1-32853).X            
2.2Agreement and Plan of Merger between Piedmont Natural Gas Company, Duke Energy Corporation and Forest Subsidiary, Inc. (incorporated by reference to Exhibit 2.1 to Duke Energy Corporation's Current Report on Form 8-K filed on October 26, 2015, File No. 1-32853).X            
3.1Amended and Restated Certificate of Incorporation (incorporated by reference to Exhibit 3.1 to Duke Energy Corporation's Current Report on Form 8-K filed on May 20, 2014, File No. 1-32853).X            
3.2Amended and Restated By-Laws of Duke Energy Corporation (incorporated by reference to Exhibit 3.1 to Duke Energy Corporation's Current Report on Form 8-K filed on January 4, 2016, File No. 1-32853).X            
3.3Articles of Organization including Articles of Conversion (incorporated by reference to Exhibit 3.1 to Duke Energy Carolinas, LLC's Current Report on Form 8-K filed on April 7, 2006, File No. 1-4928).  X          
3.3.1Amended Articles of Organization, effective October 1, 2006 (incorporated by reference to Exhibit 3.1 to Duke Energy Carolinas, LLC's Quarterly Report on Form 10-Q for the quarter ended September 30, 2006 filed on November 13, 2006, File No. 1-4928).  X          
3.4Amended Articles of Consolidation of Duke Energy Ohio, Inc. (formerly The Cincinnati Gas & Electric Company), effective October 23, 1996 (incorporated by reference to Exhibit 3(a) to registrant's Quarterly Report on Form 10-Q for the quarter ended September 30, 1996 filed on November 13, 1996, File No. 1-1232).          X  
3.4.1Amended Articles of Consolidation, effective October 1, 2006 (incorporated by reference to Exhibit 3.1 to Duke Energy Ohio, Inc.'s (formerly The Cincinnati Gas & Electric Company) Quarterly Report on Form 10-Q for the quarter ended September 30, 2006 filed on November 17, 2006, File No. 1-1232).          X  
3.5Certificate of Conversion of Duke Energy Indiana, Inc.LLC (incorporated by reference to Exhibit 3.1 to registrant's Current Report on Form 8-K filed on January 4, 2016, File No. 1-3543).            X
3.5.1Articles of Entity Conversion of Duke Energy Indiana, Inc.LLC (incorporated by reference to Exhibit 3.2 to registrant's Current Report on Form 8-K filed on January 4, 2016, File No. 1-3543).            X
3.5.2Plan of Entity Conversion of Duke Energy Indiana, Inc.LLC (incorporated by reference to Exhibit 3.3 to registrant's Current Report on Form 8-K filed on January 4, 2016, File No. 1-3543).            X
3.5.3Articles of Organization of Duke Energy Indiana, LLC (incorporated by reference to Exhibit 3.4 to registrant's Current Report on Form 8-K filed on January 4, 2016, File No. 1-3543).            X
3.5.4Limited Liability Company Operating Agreement of Duke Energy Indiana, LLC (incorporated by reference to Exhibit 3.5 to registrant's Current Report on Form 8-K filed on January 4, 2016, File No. 1-3543).            X
3.6Limited Liability Company Operating Agreement of Duke Energy Carolinas, LLC (incorporated by reference to Exhibit 3.2 to registrant's Current Report on Form 8-K filed on April 7, 2006, File No. 1-4928).  X          
3.7Regulations of Duke Energy Ohio, Inc. (formerly The Cincinnati Gas & Electric Company), effective July 23, 2003 (incorporated by reference to Exhibit 3.2 to registrant's Quarterly Report on Form 10-Q for the quarter ended June 30, 2003 filed on August 13, 2003, File No. 1-1232).          X  
3.8Articles of Organization including Articles of Conversion for Duke Energy Progress, LLC (incorporated by reference to Exhibit 3.1 to registrant's Current Report on Form 8-K filed on August 4, 2015, File No. 1-3382).      X      
3.8.1Plan of Conversion of Duke Energy Progress, Inc. (incorporated by reference to Exhibit 3.2 to registrant's Current Report on Form 8-K filed on August 4, 2015, File No. 1-3382).      X      
3.8.2Limited Liability Company Operating Agreement of Duke Energy Progress, LLC (incorporated by reference to Exhibit 3.3 to registrant's Current Report on Form 8-K filed on August 4, 2015, File No. 1-3382).      X      
3.9Amended and Restated Articles of Incorporation of Progress Energy, Inc. (formerly CP&L Energy, Inc.), effective June 15, 2000 (incorporated by reference to Exhibit 3(a)(1) to registrant's Quarterly Report on Form 10-Q for the quarter ended June 30, 2000 filed on August 14, 2000, File No. 1-3382).    X        
3.9.1Articles of Amendment to the Amended and Restated Articles of Incorporation of Progress Energy, Inc. (formerly CP&L Energy, Inc.), effective December 4, 2000 (incorporated by reference to Exhibit 3(b)(1) to registrant's Annual Report on Form 10-K for the year ended December 31, 2001 filed on March 28, 2002, File No. 1-3382).    X        
3.9.2Articles of Amendment to the Amended and Restated Articles of Incorporation of Progress Energy, Inc. (formerly CP&L Energy, Inc.), effective May 10, 2006 (incorporated by reference to Exhibit 3(a) to registrant's Quarterly Report on Form 10-Q for the quarter ended June 30, 2006 filed on August 9, 2006, File No. 1-15929).    X        
3.9.3By-Laws of Progress Energy, Inc. (formerly CP&L Energy, Inc.), effective May 10, 2006 (incorporated by reference to Exhibit 3(b) to registrant's Quarterly Report on Form 10-Q for the quarter ended June 30, 2006 filed on August 9, 2006, File No. 1-15929).    X        
4.1Articles of Conversion for Duke Energy Florida, LLC (incorporated by reference to Exhibit 3.4 to registrant's Current Report on Form 8-K filed on August 4, 2015, File No. 1-3274).        X    
4.1.24.1.1Articles of Organization for Duke Energy Florida, LLC (incorporated by reference to Exhibit 3.5 to registrant's Current Report on Form 8-K filed on August 4, 2015, File No. 1-3274).        
X 
    
4.1.34.1.2Plan of Conversion of Duke Energy Florida, Inc. (incorporated by reference to Exhibit 3.6 to registrant's Current Report on Form 8-K filed on August 4, 2015, File No. 1-3274).        X    
4.1.44.1.3Limited Liability Company Operating Agreement of Duke Energy Florida, LLC (incorporated by reference to Exhibit 3.7 to registrant's Current Report on Form 8-K filed on August 4, 2015, File No. 1-3274).        X    
4.2Indenture between Duke Energy Corporation and The Bank of New York Mellon Trust Company, N.A., as Trustee, dated as of June 3, 2008 (incorporated by reference to Exhibit 4.1 to Duke Energy Corporation's Current Report on Form 8-K filed on June 16, 2008, File No. 1-32853).X            
4.2.1First Supplemental Indenture, dated as of June 16, 2008 (incorporated by reference to Exhibit 4.2 to Duke Energy Corporation's Current Report on Form 8-K filed on June 16, 2008, File No. 1-32853).X            
4.2.2Second Supplemental Indenture, dated as of January 26, 2009 (incorporated by reference to Exhibit 4.1 to Duke Energy Corporation's Current Report on Form 8-K filed on January 26, 2009, File No. 1-32853).X            
4.2.3Third Supplemental Indenture, dated as of August 28, 2009 (incorporated by reference to Exhibit 4.1 to Duke Energy Corporation's Current Report on Form 8-K filed on August 28, 2009, File No. 1-32853).X            
4.2.4Fourth Supplemental Indenture, dated as of March 25, 2010 (incorporated by reference to Exhibit 4.1 to Duke Energy Corporation's Current Report on Form 8-K filed on March 25, 2010, File No. 1-32853).X            
4.2.5Fifth Supplemental Indenture, dated as of August 25, 2011 (incorporated by reference to Exhibit 4.1 to Duke Energy Corporation's Current Report on Form 8-K filed on August 25, 2011, File No. 1-32853).X            
4.2.6Sixth Supplemental Indenture, dated as of November 17, 2011 (incorporated by reference to Exhibit 4.1 to Duke Energy Corporation's Current Report on Form 8-K filed on November 17, 2011, File No. 1-32853).X            
4.2.7Seventh Supplemental Indenture, dated as of August 16 , 2012 (incorporated by reference to Exhibit 4.1 to Duke Energy Corporation's Current Report on Form 8-K filed on August 16, 2012, File No. 1-32853).X            
4.2.8Eighth Supplemental Indenture, dated as of January 14, 2013 (incorporated by reference to Exhibit 2 to Duke Energy Corporation's Form 8-A filed on January 14, 2013, File No. 1-32853).X            
4.2.9Ninth Supplemental Indenture, dated as of June 13, 2013 (incorporated by reference to Exhibit 4.1 to Duke Energy Corporation's Current Report on Form 8-K filed on June 13, 2013, File No. 1-32853).X            
4.2.10Tenth Supplemental Indenture, dated as of October 11, 2013 (incorporated by reference to Exhibit 4.1 to Duke Energy Corporation's Current Report on Form 8-K filed on October 11, 2013, File No. 1-32853).X            
4.2.11Eleventh Supplemental Indenture, dated as of April 4, 2014 (incorporated by reference to Exhibit 4.1 to Duke Energy Corporation's Current Report on Form 8-K filed on April 4, 2014, File No. 1-32853).X            
4.2.12Twelfth Supplemental Indenture, dated as of November 19, 2015 (incorporated by reference to Exhibit 4.2 to Duke Energy Corporation's Current Report on Form 8-K filed on November 19, 2015, File No. 1-32853).X
4.2.13Thirteenth Supplemental Indenture, dated as of April 18, 2016, to the indenture dated as of June 3, 2008, between Duke Energy Corporation and The Bank of New York Mellon Trust Company, N.A., as Trustee (incorporated by reference to Exhibit 4.1 to Duke Energy Corporation's Quarterly Report on Form 10-Q for the quarter ended March 31, 2016 filed on May 5, 2016, File No. 1-32853).X
4.2.14Fourteenth Supplemental Indenture, dated as of August 12, 2016 (incorporated by reference to Exhibit 4.1 to registrant's Current Report on Form 8-K filed on August 12, 2016, File No. 1-32853).X            
4.3Senior Indenture between Duke Energy Carolinas, LLC and The Bank of New York Mellon Trust Company, N.A., as successor trustee to JPMorgan Chase Bank (formerly known as The Chase Manhattan Bank), dated as of September 1, 1998 (incorporated by reference to Exhibit 4-D-1 to registrant's Post-Effective Amendment No. 2 to Registration Statement on Form S-3 filed on April 7, 1999, File No. 333-14209).  X          
4.3.1Fifteenth Supplemental Indenture, dated as of April 3, 2006 (incorporated by reference to Exhibit 4.4.1 to registrant's Registration Statement on Form S-3 filed on October 3, 2007, File No. 333-146483-03).  X          
4.3.2Sixteenth Supplemental Indenture, dated as of June 5, 2007 (incorporated by reference to Exhibit 4.1 registrant's Current Report on Form 8-K filed on June 6, 2007, File No. 1-4928).  X          
4.4First and Refunding Mortgage from Duke Energy Carolinas, LLC to The Bank of New York Mellon Trust Company, N.A., successor trustee to Guaranty Trust Company of New York, dated as of December 1, 1927 (incorporated by reference to Exhibit 7(a) to registrant's Form S-1, effective October 15, 1947, File No. 2-7224).  X          
4.4.1Instrument of Resignation, Appointment and Acceptance among Duke Energy Carolinas, LLC, JPMorgan Chase Bank, N.A., as Trustee, and The Bank of New York Mellon Trust Company, N.A., as Successor Trustee, dated as of September 24, 2007 (incorporated by reference to Exhibit 4.6.1 to registrant's Registration Statement on Form S-3 filed on October 3, 2007, File No. 333-146483).  X          
4.4.2Ninth Supplemental Indenture, dated as of February 1, 1949 (incorporated by reference to Exhibit 7(j) to registrant's Form S-1 filed on February 3, 1949, File No. 2-7808).  X          
4.4.3Twentieth Supplemental Indenture, dated as of June 15, 1964 (incorporated by reference to Exhibit 4-B-20 to registrant's Form S-1 filed on August 23, 1966, File No. 2-25367).  X          
4.4.4Twenty-third Supplemental Indenture, dated as of February 1, 1968 (incorporated by reference to Exhibit 2-B-26 to registrant's Form S-9 filed on January 21, 1969, File No. 2-31304).  X          
4.4.5Sixtieth Supplemental Indenture, dated as of March 1, 1990 (incorporated by reference to Exhibit 4-B-61 to registrant's Annual Report on Form 10-K for the year ended December 31, 1990, File No.1-4928).  X          
4.4.6Sixty-third Supplemental Indenture, dated as of July 1, 1991 (incorporated by reference to Exhibit 4-B-64 to registrant's Registration Statement on Form S-3 filed on February 13, 1992, File No. 33-45501).  X          
4.4.7Eighty-fourth Supplemental Indenture, dated as of March 20, 2006 (incorporated by reference to Exhibit 4.6.9 to registrant's Registration Statement on Form S-3 filed on October 3, 2007, File No. 333-146483-03).  X          
4.4.8Eighty-fifth Supplemental Indenture, dated as of January 10, 2008 (incorporated by reference to Exhibit 4.1 to Duke Energy Carolinas, LLC’s Current Report on Form 8-K filed on January 11, 2008, File No.1-4928).  X          
4.4.9Eighty-seventh Supplemental Indenture, dated as of April 14, 2008 (incorporated by reference to Exhibit 4.1 to Duke Energy Carolinas, LLC’s Current Report on Form 8-K filed on April 15, 2008, File No.1-4928).  X          
4.4.10Eighty-eighth Supplemental Indenture, dated as of November 17, 2008 (incorporated by reference to Exhibit 4.1 to Duke Energy Carolinas, LLC’s Current Report on Form 8-K filed on November 20, 2008, File No.1-4928).  X          
4.4.11Ninetieth Supplemental Indenture, dated as of November 19, 2009 (incorporated by reference to Exhibit 4.1 to Duke Energy Carolinas, LLC’s Current Report on Form 8-K filed on November 19, 2009, File No.1-4928).  X          
4.4.12Ninety-first Supplemental Indenture, dated as of June 7, 2010 (incorporated by reference to Exhibit 4.1 to Duke Energy Carolinas, LLC’s Current Report on Form 8-K filed on June 7, 2010, File No.1-4928).  X          
4.4.13Ninety-third Supplemental Indenture, dated as of May 19, 2011 (incorporated by reference to Exhibit 4.1 to Duke Energy Carolinas, LLC’s Current Report on Form 8-K filed on May 19, 2011, File No.1-4928).  X          
4.4.14Ninety-fourth Supplemental Indenture, dated as of December 8, 2011 (incorporated by reference to Exhibit 4.1 to Duke Energy Carolinas, LLC’s Current Report on Form 8-K filed on December 8, 2011, File No.1-4928).  X          
4.4.15Ninety-fifth Supplemental Indenture, dated as of September 21, 2012 (incorporated by reference to Exhibit 4.1 to Duke Energy Carolinas, LLC’s Current Report on Form 8-K filed on September 21, 2012, File No.1-4928).  X          
4.4.16Ninety-sixth Supplemental Indenture, dated as of March 12, 2015, between Duke Energy Carolinas, LLC and The Bank of New York Mellon Trust Company, N.A., as Trustee (incorporated by reference to Exhibit 4.1 to Duke Energy Carolina,Carolinas, LLC's Current Report on Form 8-K filed on March 12, 2015, File No. 1-4928).X
4.4.17Ninety-seventh Supplemental Indenture, dated as of March 11, 2016 (incorporated by reference to Exhibit 4.1 to Duke Energy Carolinas, LLC's Current Report on Form 8-K filed on March 11, 2016, File No. 1-4928).X
4.4.18Ninety-eighth Supplemental Indenture, dated as of November 17, 2016 (incorporated by reference to Exhibit 4.1 to Duke Energy Carolinas, LLC's Current Report on Form 8-K filed on November 17, 2016, File No. 1-4928).  X          
4.5Mortgage and Deed of Trust between Duke Energy Progress, Inc. (formerly Carolina Power & Light Company) and The Bank of New York Mellon (formerly Irving Trust Company) and Frederick G. Herbst (Tina D. Gonzalez, successor), as Trustees, dated as of May 1, 1940.      X      
4.5.1First through Fifth Supplemental Indentures thereto (Exhibit 2(b), File No. 2-64189); the Sixth through Sixty-sixth Supplemental Indentures (Exhibit 2(b)-5, File No. 2-16210; Exhibit 2(b)-6, File No. 2-16210; Exhibit 4(b)-8, File No. 2-19118; Exhibit 4(b)-2, File No. 2-22439; Exhibit 4(b)-2, File No. 2-24624; Exhibit 2(c), File No. 2-27297; Exhibit 2(c), File No. 2-30172; Exhibit 2(c), File No. 2-35694; Exhibit 2(c), File No. 2-37505; Exhibit 2(c), File No. 2-39002; Exhibit 2(c), File No. 2-41738; Exhibit 2(c), File No. 2-43439; Exhibit 2(c), File No. 2-47751; Exhibit 2(c), File No. 2-49347; Exhibit 2(c), File No. 2-53113; Exhibit 2(d), File No. 2-53113; Exhibit 2(c), File No. 2-59511; Exhibit 2(c), File No. 2-61611; Exhibit 2(d), File No. 2-64189; Exhibit 2(c), File No. 2-65514; Exhibits 2(c) and 2(d), File No. 2-66851; Exhibits 4(b)-1, 4(b)-2, and 4(b)-3, File No. 2-81299; Exhibits 4(c)-1 through 4(c)-8, File No. 2-95505; Exhibits 4(b) through 4(h), File No. 33-25560; Exhibits 4(b) and 4(c), File No. 33-33431; Exhibits 4(b) and 4(c), File No. 33-38298; Exhibits 4(h) and 4(i), File No. 33-42869; Exhibits 4(e)-(g), File No. 33-48607; Exhibits 4(e) and 4(f), File No. 33-55060; Exhibits 4(e) and 4(f), File No. 33-60014; Exhibits 4(a) and 4(b) to Post-Effective Amendment No. 1, File No. 33-38349; Exhibit 4(e), File No. 33-50597; Exhibit 4(e) and 4(f) to Registration Statement on Form S-3, File No. 33-57835, filed on February 24, 1995; Exhibit to the Current Report on Form 8-K filed on August 28, 1997, File No. 1-3382; Exhibit 4(b) to Registration Statement on Form S-3, File No. 333-69237, filed on December 18, 1998; and Exhibit 4(c) to the Current Report on Form 8-K filed on March 19, 1999, File No. 1-3382).      X      
4.5.2Seventy-second Supplemental Indenture, dated as of September 1, 2003 (incorporated by reference to Exhibit 4 to Duke Energy Progress, Inc.'s (formerly Carolina Power & Light Company (d/b/a Progress Energy Carolinas, Inc.)) Current Report on Form 8-K filed on September 12, 2003, File No. 1-3382).      X      
4.5.3Seventy-third Supplemental Indenture, dated as of March 1, 2005 (incorporated by reference to Exhibit 4 to Duke Energy Progress, Inc.'s (formerly Carolina Power & Light Company (d/b/a Progress Energy Carolinas, Inc.)) Current Report on Form 8-K filed on March 22, 2005, File No. 1-3382).      X      
4.5.4Seventy-fourth Supplemental Indenture, dated as of November 1, 2005 (incorporated by reference to Exhibit 4 to Duke Energy Progress, Inc.'s (formerly Carolina Power & Light Company (d/b/a Progress Energy Carolinas, Inc.)) Current Report on Form 8-K filed on November 30, 2005, File No. 1-3382).      X      
4.5.5Seventy-fifth Supplemental Indenture, dated as of March 1, 2008 (incorporated by reference to Exhibit 4 to Duke Energy Progress, Inc.'s (formerly Carolina Power & Light Company (d/b/a Progress Energy Carolinas, Inc.)) Current Report on Form 8-K filed on March 13, 2008, File No. 1-3382).      X      
4.5.6Seventy-sixth Supplemental Indenture, dated as of January 1, 2009 (incorporated by reference to Exhibit 4 to Duke Energy Progress, Inc.'s (formerly Carolina Power & Light Company (d/b/a Progress Energy Carolinas, Inc.)) Current Report on Form 8-K filed on January 15, 2009, File No. 1-3382).      X      
4.5.7Seventy-seventh Supplemental Indenture, dated as of June 18, 2009 (incorporated by reference to Exhibit 4 to Duke Energy Progress, Inc.'s (formerly Carolina Power & Light Company (d/b/a Progress Energy Carolinas, Inc.)) Current Report on Form 8-K filed on June 23, 2009, File No. 1-3382).      X      
4.5.8Seventy-eighth Supplemental Indenture, dated as of September 1, 2011 (incorporated by reference to Exhibit 4 to Duke Energy Progress, Inc.'s (formerly Carolina Power & Light Company (d/b/a Progress Energy Carolinas, Inc.)) Current Report on Form 8-K filed on September 15, 2011, File No. 1-3382).      X      
4.5.9Seventy-ninth Supplemental Indenture, dated as of May 1, 2012 (incorporated by reference to Exhibit 4 to Duke Energy Progress, Inc.'s (formerly Carolina Power & Light Company (d/b/a Progress Energy Carolinas, Inc.)) Current Report on Form 8-K filed on May 18, 2012, File No. 1-3382).      X      
4.5.10Eightieth Supplemental Indenture, dated as of March 1, 2013 (incorporated by reference to Exhibit 4.1 to Duke Energy Progress, Inc.'s (formerly Carolina Power & Light Company (d/b/a Progress Energy Carolinas, Inc.)) Current Report on Form 8-K filed on March 12, 2013, File No. 1-3382).      X      
4.5.11Eighty-second Supplemental Indenture, dated as of March 1, 2014, between the Company and The Bank of New York Mellon (formerly Irving Trust Company) and Tina D. Gonzalez (successor to Frederick G. Herbst) and forms of global notes (incorporated by reference to Exhibit 4.1 to Duke Energy Progress, Inc.'s Current Report on Form 8-K filed on March 6, 2014, File No. 1-3382).      X      
4.5.12Eighty-third Supplemental Indenture, dated as of November 1, 2014, between the Company and The Bank of New York Mellon (formerly Irving Trust Company) and Tina D. Gonzalez (successor to Frederick G. Herbst) and forms of global notes (incorporated by reference to Exhibit 4.1 to Duke Energy Progress, Inc.'s Current Report on Form 8-K filed on November 20, 2014, File No. 1-3382).      X      
4.5.13Eighty-fifth Supplemental Indenture, dated as of August 1, 2015 (incorporated by reference to Exhibit 4.1 to Duke Energy Progress, LLC's Current Report on Form 8-K filed on August 13, 2015, File No. 1-3382).      X      
4.5.14Eighty-sixth Supplemental Indenture, dated as of September 1, 2016 (incorporated by reference to Exhibit 4.1 to registrant's Current Report on Form 8-K filed on September 16, 2016, File No. 1-15929).X
4.6Indenture (for Debt Securities) between Duke Energy Progress, Inc. (formerly Carolina Power & Light Company) and The Bank of New York Mellon (successor in interest to The Chase Manhattan Bank), as Trustee (incorporated by reference to Exhibit 4(a) to registrant's Current Report on Form 8-K filed on November 5, 1999, File No. 1-3382).      X      
4.7Indenture (for [Subordinated] Debt Securities) (open ended) (incorporated by reference to Exhibit 4(a)(2) to Duke Energy Progress, Inc.'s (formerly Carolina Power & Light Company (d/b/a Progress Energy Carolinas, Inc.)) Registration Statement on Form S-3 filed on November 18, 2008, File No. 333-155418).      X      
4.8Indenture (for First Mortgage Bonds) between Duke Energy Florida, Inc. (formerly Florida Power Corporation) and The Bank of New York Mellon (as successor to Guaranty Trust Company of New York and The Florida National Bank of Jacksonville), as Trustee, dated as of January 1, 1944 (incorporated by reference to Exhibit B-18 to registrant's Form A-2, File No. 2-5293).        X    
4.8.1Seventh Supplemental Indenture (incorporated by reference to Exhibit 4(b) to Duke Energy Florida, Inc.'s (formerly Florida Power Corporation) Registration Statement on Form S-3 filed on September 27, 1991, File No. 33-16788).        X    
4.8.2Eighth Supplemental Indenture (incorporated by reference to Exhibit 4(c) to Duke Energy Florida, Inc.'s (formerly Florida Power Corporation) Registration Statement on Form S-3 filed on September 27, 1991, File No. 33-16788).        X    
4.8.3Sixteenth Supplemental Indenture (incorporated by reference to Exhibit 4(d) to Duke Energy Florida, Inc.'s (formerly Florida Power Corporation) Registration Statement on Form S-3 filed on September 27, 1991, File No. 33-16788).        X    
4.8.4Twenty-ninth Supplemental Indenture (incorporated by reference to Exhibit 4(c) to Duke Energy Florida, Inc.'s (formerly Florida Power Corporation) Registration Statement on Form S-3 filed on September 17, 1982, File No. 2-79832).        X    
4.8.5Thirty-eighth Supplemental Indenture, dated as of July 25, 1994 (incorporated by reference to exhibit 4(f) to Duke Energy Florida, Inc.'s (formerly Florida Power Corporation) Registration Statement on Form S-3 filed on August 29, 1994, File No. 33-55273).        X    
4.8.6Forty-first Supplemental Indenture, dated as of February 1, 2003 (incorporated by reference to Exhibit 4 to Duke Energy Florida, Inc.'s (formerly Duke Energy Florida Power Corporation (d/b/a Progress Energy Florida, Inc.)) Current Report on Form 8-K filed on February 21, 2003, File No. 1-3274).        X    
4.8.7Forty-second Supplemental Indenture, dated as of April 1, 2003 (incorporated by reference to Exhibit 4 to Duke Energy Florida, Inc.'s (formerly Florida Power Corporation (d/b/a Progress Energy Florida, Inc.)) Quarterly Report on Form 10-Q for the quarter ended June 30, 2003 filed on August 11, 2003, File No. 1-3274).               X        
4.8.8Forty-third Supplemental Indenture, dated as of November 1, 2003 (incorporated by reference to Exhibit 4 to Duke Energy Florida, Inc.'s (formerly Florida Power Corporation (d/b/a Progress Energy Florida, Inc.)) Current Report on Form 8-K filed on November 21, 2003, File No. 1-3274).                X        
4.8.9Forty-fourth Supplemental Indenture, dated as of August 1, 2004 (incorporated by reference to Exhibit 4(m) to Duke Energy Florida, Inc.'s (formerly Florida Power Corporation (d/b/a Progress Energy Florida, Inc.)) Annual Report on Form 10-K for the year ended December 31, 2004 filed on March 16, 2005, File No. 1-3274).                X        
4.8.10Forty-sixth Supplemental Indenture, dated as of September 1, 2007 (incorporated by reference to Exhibit 4 to Duke Energy Florida, Inc.'s (formerly Florida Power Corporation (d/b/a Progress Energy Florida, Inc.)) Current Report on Form 8-K filed on September 19, 2007, File No. 1-3274).                X        
4.8.11Forty-seventh Supplemental Indenture, dated as of December 1, 2007 (incorporated by reference to Exhibit 4 to Duke Energy Florida, Inc.'s (formerly Florida Power Corporation (d/b/a Progress Energy Florida, Inc.)) Current Report on Form 8-K filed on December 13, 2007, File No. 1-3274).                X        
4.8.12Forty-eighth Supplemental Indenture, dated as of June 1, 2008 (incorporated by reference to Exhibit 4 to Duke Energy Florida, Inc.'s (formerly Florida Power Corporation (d/b/a Progress Energy Florida, Inc.)) Current Report on Form 8-K filed on June 18, 2008, File No. 1-3274).                X        
4.8.13Forty-ninth Supplemental Indenture, dated as of March 1, 2010 (incorporated by reference to Exhibit 4 to Duke Energy Florida, Inc.'s (formerly Florida Power Corporation (d/b/a Progress Energy Florida, Inc.)) Current Report on Form 8-K filed on March 25, 2010, File No. 1-3274).                X        
4.8.14Fiftieth Supplemental Indenture, dated as of August 11, 2011 (incorporated by reference to Exhibit 4 to Duke Energy Florida, Inc.'s (formerly Florida Power Corporation (d/b/a Progress Energy Florida, Inc.)) Current Report on Form 8-K filed on August 18, 2011, File No. 1-3274).                X        
4.8.15Fifty-first Supplemental Indenture, dated as of November 1, 2012 (incorporated by reference to Exhibit 4.1 to Duke Energy Florida, Inc.'s (formerly Florida Power Corporation (d/b/a Progress Energy Florida, Inc.)) Current Report on Form 8-K filed on November 20, 2012, File No. 1-3274).                X        
4.8.16Fifty-third Supplemental Indenture, dated as of September 1, 2016 (incorporated by reference to Exhibit 4.1 to registrant's Current Report on Form 8-K filed on September 9, 2016, File No. 1-03274).X
4.9Indenture (for Debt Securities) between Duke Energy Florida, Inc. (formerly Florida Power Corporation (d/b/a Progress Energy Florida, Inc.)) and The Bank of New York Mellon Trust Company, National Association (successor in interest to J.P. Morgan Trust Company, National Association), as Trustee, dated as of December 7, 2005 (incorporated by reference to Exhibit 4(a) to registrant's Current Report on Form 8-K filed on December 13, 2005, File No. 1-3274).                X        
4.10Indenture (for [Subordinated] Debt Securities) (open ended) (incorporated by reference to Exhibit 4(a)(2) Duke Energy Florida, Inc.'s (formerly Florida Power Corporation (d/b/a Progress Energy Florida, Inc.)) Registration Statement on Form S-3 filed on November 18, 2008, File No. 333-155418).                X        
4.11Original Indenture (Unsecured Debt Securities) between Duke Energy Ohio, Inc. (formerly The Cincinnati Gas & Electric Company) and The Bank of New York Mellon Trust Company, N.A., as Successor Trustee, dated as of May 15, 1995 (incorporated by reference to Exhibit 3 to registrant's Form 8-A filed on July 27, 1995, File No. 1-1232).                    X    
4.11.1First Supplemental Indenture, dated as of June 1, 1995 (incorporated by reference to Exhibit 4 B to Duke Energy Ohio, Inc.'s (formerly The Cincinnati Gas & Electric Company) Quarterly Report on Form 10-Q for the quarter ended June 30, 1995 filed on August 11, 1995, File No. 1-1232).                    X    
4.11.2Seventh Supplemental Indenture, dated as of June 15, 2003 (incorporated by reference to Exhibit 4.1 to Duke Energy Ohio, Inc.'s (formerly The Cincinnati Gas & Electric Company) Quarterly Report on Form 10-Q for the quarter ended June 30, 2003 filed on August 13, 2003, File No. 1-1232).                    X    
4.12Original Indenture (First Mortgage Bonds) between Duke Energy Ohio, Inc. (formerly The Cincinnati Gas & Electric Company) and The Bank of New York Mellon Trust Company, N.A., as Successor Trustee, dated as of August 1, 1936 (incorporated by reference to an exhibit to registrant's Registration Statement No. 2-2374).                    X    
4.12.1Fortieth Supplemental Indenture, dated as of March 23, 2009 (incorporated by reference to Exhibit 4.1 to Duke Energy Ohio, Inc.’s (formerly The Cincinnati Gas & Electric Company) Current Report on Form 8-K filed on March 24, 2009, File No. 1-1232).                    X    
4.12.2Forty-second Supplemental Indenture, dated as of September 6, 2013 (incorporated by reference to Exhibit 4.1 to Duke Energy Ohio, Inc.’s (formerly The Cincinnati Gas & Electric Company) Current Report on Form 8-K filed on September 6, 2013, File No. 1-1232).                    X    
4.12.3Forty-fourth Supplemental Indenture, dated as of June 23, 2016 (incorporated by reference to Exhibit 4.1 registrant's Current Report on Form 8-K filed on June 23, 2016, File No. 1-1232).X
4.13Indenture between Duke Energy Indiana, Inc.LLC (formerly PSI Energy, Inc.) and The Bank of New York Mellon Trust Company, N.A., as Successor Trustee, dated as of November 15, 1996 (incorporated by reference to Exhibit 4(v) to registrant's Annual Report on Form 10-K for the year ended December 31, 1996 filed on March 27, 1997, File No. 1-3543).                        X
4.13.1Third Supplemental Indenture, dated as of March 15, 1998 (incorporated by reference to Exhibit 4 to Duke Energy Indiana, Inc.'sLLC's (formerly PSI Energy, Inc.) Annual Report on Form 10-K for the year ended December 31, 1997 filed on March 27, 1998, File No. 1-3543).                        X
4.13.2Eighth Supplemental Indenture, dated as of September 23, 2003 (incorporated by reference to Exhibit 4.2 to Duke Energy Indiana, Inc.'sLLC's (formerly PSI Energy, Inc.) Quarterly Report on Form 10-Q for the quarter ended September 30, 2003 filed on November 13, 2003,  File No. 1-3543).                        X
4.13.3Ninth Supplemental Indenture, dated as of October 21, 2005 (incorporated by reference to Exhibit 4.7.3 to Duke Energy Indiana, Inc.'sLLC's (formerly PSI Energy, Inc.) Registration Statement on Form S-3 filed on September 29, 2010, File No. 333-169633).                        X
4.13.4Tenth Supplemental Indenture, dated as of June 9, 2006 (incorporated by reference to Exhibit 4.1 to Duke Energy Indiana, Inc.’sLLC’s (formerly PSI Energy, Inc.) Current Report on Form 8-K filed on June 15, 2006, File No. 1-3543).                        X
4.14Original Indenture (First Mortgage Bonds) between Duke Energy Indiana, Inc.LLC (formerly PSI Energy, Inc.) and Deutsche Bank National Trust Company, as Successor Trustee, dated as of September 1, 1939 (filed as an exhibit in File No. 70-258).                        X
4.14.1Tenth Supplemental Indenture, dated as of July 1, 1952 (filed as an exhibit in File No. 2-9687).                        X
4.14.2Twenty-third Supplemental Indenture, dated as of January 1, 1977 (filed as an exhibit in File No. 2-57828).                        X
4.14.3Twenty-fifth Supplemental Indenture, dated as of September 1, 1978 (filed as an exhibit in File No. 2-62543).                        X
4.14.4Twenty-sixth Supplemental Indenture, dated as of September 1, 1978 (filed as an exhibit in File No. 2-62543).                        X
4.14.5Thirtieth Supplemental Indenture, dated as of August 1, 1980 (filed as an exhibit in File No. 2-68562).                        X
4.14.6Thirty-fifth Supplemental Indenture, dated as of March 30, 1984 (filed as an exhibit to registrant's Annual Report on Form 10-K for the year ended December 31, 1984, File No. 1-3543).                        X
4.14.7Forty-sixth Supplemental Indenture, dated as of June 1, 1990 (filed as an exhibit to registrant's Annual Report on Form 10-K for the year ended December 31, 1991, File No. 1-3543).                        X
4.14.8Forty-seventh Supplemental Indenture, dated as of July 15, 1991 (filed as an exhibit to registrant's Annual Report on Form 10-K for the year ended December 31, 1991, File No. 1-3543).                        X
4.14.9Forty-eighth Supplemental Indenture, dated as of July 15, 1992 (filed as an exhibit to registrant's Annual Report on Form 10-K for the year ended December 31, 1992, File No. 1-3543).                        X
4.14.10Fifty-second Supplemental Indenture, dated as of April 30, 1999 (incorporated by reference to Exhibit 4 to Duke Energy Indiana, Inc.’sLLC’s (formerly PSI Energy, Inc.) Quarterly Report on Form 10-Q for the quarter ended March 31, 1999 filed on May 13, 1999, File No. 1-3543).                        X
4.14.11Fifty-seventh Supplemental Indenture, dated as of August 21, 2008 (incorporated by reference to Exhibit 4.1 to Duke Energy Indiana, Inc.’sLLC’s (formerly PSI Energy, Inc.) Current Report Form 8-K filed on August 21, 2008, File No. 1-3543).                        X
4.14.12Fifty-eighth Supplemental Indenture, dated as of December 19, 2008 (incorporated by reference to Exhibit 4.8.12 to Duke Energy Indiana, Inc.’sLLC’s (formerly PSI Energy, Inc.) Registration Statement on Form S-3 filed on September 29, 2010, File No. 333-169633-02).                        X
4.14.13Fifty-ninth Supplemental Indenture, dated as of March 23, 2009 (incorporated by reference to Exhibit 4.1 to Duke Energy Indiana, Inc.’sLLC’s (formerly PSI Energy, Inc.) Current Report on Form 8-K filed on March 24, 2009, File No. 1-3543).                        X
4.14.14Sixtieth Supplemental Indenture, dated as of June 1, 2009 (incorporated by reference to Exhibit 4.8.14 to Duke Energy Indiana, Inc.’sLLC’s (formerly PSI Energy, Inc.) Registration Statement on Form S-3 filed on September 29, 2010, File No. 333-169633-02).                        X
4.14.15Sixty-first Supplemental Indenture, dated as of October 1, 2009 (incorporated by reference to Exhibit 4.8.15 to Duke Energy Indiana, Inc.’sLLC’s (formerly PSI Energy, Inc.) Registration Statement on Form S-3 filed on September 29, 2010, File No. 333-169633-02).                        X
4.14.16Sixty-second Supplemental Indenture, dated as of July 9, 2010 (incorporated by reference to Exhibit 4.1 to Duke Energy Indiana, Inc.’sLLC’s (formerly PSI Energy, Inc.) Current Report on Form 8-K filed on July 9, 2010, File No. 1-3543).                         X
4.14.17Sixty-third Supplemental Indenture, dated as of September 23, 2010 (incorporated by reference to Exhibit 4.8.17 to Duke Energy Indiana, Inc.’sLLC’s (formerly PSI Energy, Inc.) Registration Statement on Form S-3 filed on September 29, 2010, File No. 333-169633-02).                        X
4.14.18Sixty-fourth Supplemental Indenture, dated as of December 1, 2011 (incorporated by reference to Exhibit 4(d)(2)(xviii) to Duke Energy Indiana, Inc.’sLLC’s (formerly PSI Energy, Inc.) Registration Statement on Form S-3 filed on September 30, 2013, File No. 333-191462-03).                        X
4.14.19Sixty-fifth Supplemental Indenture, dated as of March 15, 2012 (incorporated by reference to Exhibit 4.1 to Duke Energy Indiana, Inc.’sLLC’s (formerly PSI Energy, Inc.) Current Report on Form 8-K filed on March 15, 2012, File No. 1-3543).                        X
4.14.20Sixty-sixth Supplemental Indenture, dated as of July 11, 2013 (incorporated by reference to Exhibit 4.1 to Duke Energy Indiana, Inc.’sLLC’s (formerly PSI Energy, Inc.) Current Report on Form 8-K filed on July 11, 2013, File No. 1-3543).X
4.14.21Sixty-seventh Supplemental Indenture, dated as of January 1, 2016, between Duke Energy Indiana, Inc. and Deutsche Bank National Trust Company, as Trustee, supplementing and amending the Indenture of Mortgage or Deed of Trust, dated September 1, 1939, between Duke Energy Indiana, Inc. and Deutsche Bank National Trust Company, as Trustee (incorporated by reference to Exhibit 4.2 to Duke Energy Indiana, LLC's (formerly PSI Energy, Inc.) Quarterly Report on Form 10-Q for the quarter ended March 31, 2016 filed on May 5, 2016, File No. 1-3543).X
4.14.22Sixty-eighth Supplemental Indenture, dated as of May 12, 2016 (incorporated by reference to Exhibit 4.1 to registrant's Current Report on Form 8-K filed on May 12, 2016, File No. 1-3543).            X
4.15Repayment Agreement between Duke Energy Ohio, Inc. (formerly The Cincinnati Gas & Electric Company) and The Dayton Power and Light Company, dated as of December 23, 1992, (filed with registrant's Annual Report on Form 10-K for the year ended December 31, 1992, File No. 1-1232).                    X    
4.16Unsecured Promissory Note between Duke Energy Indiana, Inc.LLC (formerly PSI Energy, Inc.) and the Rural Utilities Service, dated as of October 14, 1998 (incorporated by reference to Exhibit 4 to registrant's Annual Report on Form 10-K for the year ended December 31, 1998 filed on March 8, 1999, File No. 1-3543).                        X
4.176.302% Subordinated Note between Duke Energy Indiana, Inc.LLC (formerly PSI Energy, Inc.) and Cinergy Corp., dated as of February 5, 2003 (incorporated by reference to Exhibit 4(yyy) to registrant's Quarterly Report on Form 10-Q for the quarter ended March 31, 2003 filed on May 12,2003, File No. 1-3543).                        X
4.186.403% Subordinated Note between Duke Energy Indiana, Inc.LLC (formerly PSI Energy, Inc.) and Cinergy Corp., dated as of February 5, 2003 (incorporated by reference to Exhibit 4(zzz) to registrant's Quarterly Report on Form 10-Q for the quarter ended March 31, 2003 filed on May 12, 2003, File No. 1-3543).                        X
4.19Form of Duke Energy InterNote (Fixed Rate), dated as of November 13, 2012 (incorporated by reference to Exhibit 4.1 to Duke Energy Corporation's Current Report on Form 8-K filed on November 14, 2012, File No. 1-32853).X                        
4.20Form of Duke Energy InterNote (Floating Rate), dated as of November 13, 2012 (incorporated by reference to Exhibit 4.2 to Duke Energy Corporation's Current Report on Form 8-K filed on November 14, 2012, File No. 1-32853).X                        
4.21Contingent Value Obligation Agreement between Progress Energy, Inc. (formerly CP&L Energy, Inc.) and The Chase Manhattan Bank, as Trustee, dated as of November 30, 2000 (incorporated by reference to Exhibit 4.1 to registrant's Current Report on Form 8-K filed on December 1, 2000, File No. 1-3382).        X                
4.22Forty-second Supplemental Indenture between Duke Energy Ohio, Inc. (formerly The Cincinnati Gas & Electric Company) and The Bank of New York Mellon Trust Company, N.A., as Trustee, dated as of September 6, 2013, (incorporated by reference to Exhibit 4.1 to registrant's Current Report on Form 8-K filed on September 6, 2013, File No. 1-1232).X
4.23
Sixty-sixth Supplemental Indenture between Duke Energy Indiana, Inc. (formerly PSI Energy, Inc.) and Deutsche Bank National Trust Company, as Trustee, dated as of July 11, 2013, (incorporated by reference to Exhibit 4.1 to registrant's Current Report on Form 8-K filed on July 11, 2013, File No. 1-3543).

X
10.1Purchase and Sale Agreement between Duke Energy Americas, LLC and LSP Bay II Harbor Holding, LLC, dated as of January 8, 2006 (incorporated by reference to Exhibit 10.2 to registrant's Quarterly Report on Form 10-Q for the quarter ended March 31, 2006 filed on May 10, 2006, File No. 1-32853).X  X                    
10.1.1Amendment to Purchase and Sale Agreement between Duke Energy Americas, LLC, LS Power Generation, LLC (formerly LSP Bay II Harbor Holding, LLC), LSP Gen Finance Co, LLC, LSP South Bay Holdings, LLC, LSP Oakland Holdings, LLC, and LSP Morro Bay Holdings, LLC, dated as of May 4, 2006 (incorporated by reference to Exhibit 10.2.1 to registrant's Quarterly Report on Form 10-Q for the quarter ended March 31, 2006 filed on May 10, 2006, File No.1-32853).X  X                    
10.2**Directors’ Charitable Giving Program (incorporated by reference to Exhibit 10-P to Duke Energy Carolinas, LLC's Annual Report on Form 10-K for the year ended December 31, 1992, File No. 1-4928).X                        
10.2.1**Amendment to Directors’ Charitable Giving Program, dated as of  June 18, 1997 (incorporated by reference to Exhibit 1-1.1 to Duke Energy Carolinas, LLC's Annual Report on Form 10-K for the year ended December 31, 2003 filed on March 15, 2004, File No. 1-4928).X          ��              
10.2.2**Amendment to Directors’ Charitable Giving Program, dated as of July 28, 1997 (incorporated by reference to Exhibit 10-1.2 to Duke Energy Carolinas, LLC's Annual Report on Form 10-K for the year ended December 31, 2003 filed on March 15, 2004, File No. 1-4928).X                        
10.2.3**Amendment to Directors’ Charitable Giving Program, dated as of February 18, 1998 (incorporated by reference to Exhibit 10-1.3 to Duke Energy Carolinas, LLC's Annual Report on Form 10-K for the year ended December 31, 2003 filed on March 15, 2004, File No. 1-4928).X                        
10.3Agreements with Piedmont Electric Membership Corporation, Rutherford Electric Membership Corporation and Blue Ridge Electric Membership Corporation to provide wholesale electricity and related power scheduling services from September 1, 2006 through December 31, 2021 (incorporated by reference to Exhibit 10.15 to Duke Energy Corporation's Quarterly Report on Form 10-Q for the quarter ended June 30, 2006 filed on August 9, 2006, File No. 1-32853).X                        
10.4Asset Purchase Agreement between Saluda River Electric Cooperative, Inc., as Seller, and Duke Energy Carolinas, LLC, as Purchaser, dated as of December 20, 2006 (incorporated by reference to Exhibit 10.1 to registrant's Current Report on Form 8-K filed on December 27, 2006, File No. 1-4928).    X                    
10.5Settlement between Duke Energy Corporation, Duke Energy Carolinas, LLC and the U.S. Department of Justice resolving Duke Energy's used nuclear fuel litigation against the U.S. Department of Energy, dated as of March 6, 2007 (incorporated by reference to Item 8.01 to registrant's Current Report on Form 8-K filed on March 12, 2007, File No. 1-4928).    X                    
10.6Engineering, Procurement and Construction Agreement between Duke Energy Carolinas, LLC and Stone & Webster National Engineering P.C., dated as of July 11, 2007 (incorporated by reference to Exhibit 10.1 to registrant's Quarterly Report on Form 10-Q for the quarter ended September 30, 2007, filed on November 12, 2007, File No. 1-4928). (Portions of the exhibit have been omitted and filed separately with the Securities and Exchange Commission pursuant to a request for confidential treatment pursuant to Rule 24b-2 under the Securities Exchange Act of 1934, as amended.)    X                    
10.7Amended and Restated Engineering, Procurement and Construction Agreement between Duke Energy Carolinas, LLC and Stone & Webster National Engineering P.C., dated as of February 20, 2008 (incorporated by reference to Exhibit 10.1 to registrant's Quarterly Report on Form 10-Q for the quarter ended March 31, 2008, filed on May 14, 2008, File No. 1-4928). (Portions of the exhibit have been omitted and filed separately with the Securities and Exchange Commission pursuant to a request for confidential treatment pursuant to Rule 24b-2 under the Securities Exchange Act of 1934, as amended).amended.)    X                    
10.8Asset Purchase Agreement between Cinergy Capital & Trading, Inc. (Capital & Trading), CinCap Madison, LLC and Duke Energy Indiana, Inc.LLC (formerly PSI Energy, Inc.), dated as of February 5, 2003 (incorporated by reference to Exhibit 10(tt) to registrant's Quarterly Report on Form 10-Q for the quarter ended March 31, 2003 filed on May 12, 2003, File No. 1-3543).                        X
10.9Amended and Restated Engineering and Construction Agreement between Duke Energy Carolinas, LLC and Shaw North Carolina, Inc., dated as of December 21, 2009 (incorporated by reference to Item 1.01 to registrant's Current Report on Form 8-K filed on December 28, 2009, File No. 1-4928).    X                    
10.10Asset Purchase Agreement between Capital & Trading, CinCap VII, LLC and Duke Energy Indiana, Inc.LLC (formerly PSI Energy, Inc.), dated as of February 5, 2003 (incorporated by reference to Exhibit 10(uu) to registrant's Quarterly Report on Form 10-Q for the quarter ended March 31, 2003 filed on May 12, 2003, File No. 1-3543).                        X
10.11Asset Purchase Agreement between Duke Energy Indiana, Inc.LLC (formerly PSI Energy, Inc.) and Duke Energy Ohio, Inc. (formerly The Cincinnati Gas & Electric Company) and Allegheny Energy Supply Company, LLC, Allegheny Energy Supply Wheatland Generating Facility, LLC and Lake Acquisition Company, L.L.C., dated as of May 6, 2005 (incorporated by reference to registrant's Quarterly Report on Form 10-Q for the quarter ended June 30, 2005 filed on August 4, 2005, File No. 1-1232).                    X    
10.12Asset Purchase Agreement between Duke Energy Indiana, Inc.LLC (formerly PSI Energy, Inc.) and CG&E and Allegheny Energy Supply Company, LLC, Allegheny Energy Supply Wheatland Generating Facility, LLC and Lake Acquisition Company, L.L.C., dated as of May 6, 2005 (incorporated by reference to Exhibit 10(kkkk) to registrant's Quarterly Report on Form 10-Q for the quarter ended June 30, 2005 filed on August 4, 2005, File No. 1-3543).                     X
10.13Keepwell Agreement between Duke Capital LLC and Duke Energy Ohio, Inc. (formerly The Cincinnati Gas & Electric Company), dated as of April 10, 2006 (incorporated by reference to Exhibit 10.1 to registrant's Current Report on Form 8-K filed on April 14, 2006, File No. 1-1232).                    X    
10.14Agreements between Piedmont Electric Membership Corporation, Rutherford Electric Membership Corporation and Blue Ridge Electric Membership Corporation to provide wholesale electricity and related power scheduling services from September 1, 2006 through December 31, 2021 (incorporated by reference to Exhibit 10.15 to Duke Energy Corporation's Quarterly Report on Form 10-Q for the quarter ended June 30, 2006 filed on August 9, 2006, File No. 1-32853).X                        
10.15Asset Purchase Agreement between Duke Energy Indiana, Inc.,LLC, (formerly PSI Energy, Inc.), as Seller, and Wabash Valley Power Association, Inc., as Buyer, dated as of December 1, 2006 (incorporated by reference to Exhibit 10.1 to registrant's Current Report on Form 8-K filed on December 7, 2006, File No. 1-3543).                        X
10.16Purchase and Sale Agreement between Cinergy Capital & Trading, Inc., as Seller, and Fortis Bank, S.A./N.V., as Buyer, dated as of June 26, 2006 (incorporated by reference to Exhibit 10.1 to Duke Energy Corporation's Current Report on Form 8-K filed on June 30, 2006, File No. 1-32853).X                        
10.17Engineering, Procurement and Construction Management Agreement between Duke Energy Indiana, Inc.LLC (formerly PSI Energy, Inc.) and Bechtel Power Corporation, dated as of December 15, 2008 (incorporated by reference to Exhibit 10.16 to registrant's Annual Report on Form 10-K for the year ended December 31, 2008, filed on March 13, 2009, File No. 1-3543). (Portions of the exhibit have been omitted and filed separately with the Securities and Exchange Commission pursuant to a request for confidential treatment pursuant to Rule 24b-2 under the Securities Exchange Act of 1934, as amended).amended.)                        X
10.18Formation and Sale Agreement between Duke Ventures, LLC, Crescent Resources, LLC, Morgan Stanley Real Estate Fund V U.S. L.P., Morgan Stanley Real Estate Fund V Special U.S., L.P., Morgan Stanley Real Estate Investors V U.S., L.P., MSP Real Estate Fund V, L.P., and Morgan Stanley Strategic Investments, Inc., dated as of September 7, 2006 (incorporated by reference to Exhibit 10.3 to Duke Energy Corporation's Quarterly Report on Form 10-Q for the quarter ended September 30, 2006 filed on November 9, 2006, File No. 1-32853).X                        
10.19Engineering, Procurement and Construction Agreement between Duke Energy Carolinas, LLC and Stone & Webster National Engineering P.C., dated as of July 11, 2007 (incorporated by reference to Exhibit 10.2 to Duke Energy Corporation's Quarterly Report on Form 10-Q for the quarter ended September 30, 2007 filed on November 9, 2007, File No. 1-32853). (Portions of the exhibit have been omitted and filed separately with the Securities and Exchange Commission pursuant to a request for confidential treatment pursuant to Rule 24b-2 under the Securities Exchange Act of 1934, as amended).amended.)X                        
10.20Amended and Restated Engineering, Procurement and Construction Agreement between Duke Energy Carolinas, LLC and Stone & Webster National Engineering P.C., dated as of February 20, 2008, (incorporated by reference to Exhibit 10.1 to Duke Energy Corporation's Quarterly Report on Form 10-Q for the quarter ended March 31, 2008, filed on May 9, 2008, File No. 1-32853). (Portions of the exhibit have been omitted and filed separately with the Securities and Exchange Commission pursuant to a request for confidential treatment pursuant to Rule 24b-2 under the Securities Exchange Act of 1934, as amended).amended.)X                        
10.21Agreement and Plan of Merger between DEGS Wind I, LLC, DEGS Wind Vermont, Inc., Catamount Energy Corporation, dated as of June 25, 2008 (incorporated by reference to Exhibit 10.2 to Duke Energy Corporation's Quarterly Report on Form 10-Q for the quarter ended June 30, 2008 filed on August 11, 2008, File No. 1-32853).X                        
10.22Amended and Restated Engineering and Construction Agreement between Duke Energy Carolinas, LLC and Shaw North Carolina, Inc., dated as of December 21, 2009 (incorporated by reference to Exhibit 10.41 to Duke Energy Corporation's Annual Report on Form 10-K for the year ended December 31, 2009 filed on February 26, 2010, File No.1-32853).X                        
10.23Operating Agreement of Pioneer Transmission, LLC (incorporated by reference to Exhibit 10.1 to Duke Energy Corporation's Quarterly Report on Form 10-Q for the quarter ended September 30, 2008 filed on November 7, 2008, File No. 1-32853).X                        
10.24**Amended and Restated Duke Energy Corporation Directors' Saving Plan, dated as of January 1, 2014 (incorporated by reference to Exhibit 10.32 to Duke Energy Corporation's Annual Report on Form 10-K for the year ended December 31, 2013 filed on February 28, 2014, File No. 1-32853).X                        
10.25Engineering, Procurement and Construction Management Agreement between Duke Energy Indiana, Inc.LLC (formerly PSI Energy, Inc.) and Bechtel Power Corporation, dated as of December 15, 2008 (incorporated by reference to Item 1.01 to registrant's Current Report on Form 8-K filed on December 19, 2008, File Nos. 1-32853 and 1-3543). (Portions of the exhibit have been omitted and filed separately with the Securities and Exchange Commission pursuant to a request for confidential treatment pursuant to Rule 24b-2 under the Securities Exchange Act of 1934, as amended).amended.)X                      X
10.26Amended and Restated Engineering and Construction Agreement between Duke Energy Carolinas, LLC and Shaw North Carolina, Inc., dated as of March 8, 2010 (incorporated by reference to Exhibit 10.1 to registrant's Quarterly Report on Form 10-Q for the quarter ended March 31, 2010 filed on May 7, 2010, File Nos. 1-32853 and 1-4928).X  X                    
10.27**Duke Energy Corporation Executive Severance Plan (incorporated by reference to Exhibit 10.1 to registrant's Current Report on Form 8-K filed on January 10, 2011, File No. 1-32853).X                        
10.28$6,000,000,000 Five-Year Credit Agreement between Duke Energy Corporation, Duke Energy Carolinas, LLC, Duke Energy Ohio, Inc., Duke Energy Indiana, Inc.,LLC, Duke Energy Kentucky, Inc., Carolina Power and Light Company d/b/a Duke Energy Progress, Inc. and Florida Power Corporation, d/b/a Duke Energy Florida, Inc., as Borrowers, the lenders listed therein, Wells Fargo Bank, National Association, as Administrative Agent, Bank of America, N.A. and��and The Royal Bank of Scotland plc, as Co-Syndication Agents and Bank of China, New York Branch, Barclays Bank PLC, Citibank, N.A., Credit Suisse AG, Cayman Islands Branch, Industrial and Commercial Bank of China Limited, New York Branch, JPMorgan Chase Bank, N.A. and UBS Securities LLC, as Co-Documentation Agents, dated as of November 18, 2011 (incorporated by reference to Exhibit 10.1 to registrant's Current Report on Form 8-K filed on November 25, 2011, File Nos. 1-32853, 1-4928, 1-1232 and 1-3543).X  X              X  X
10.28.1Amendment No. 1 and Consent between Duke Energy Corporation, Duke Energy Carolinas, LLC, Duke Energy Ohio, Inc., Duke Energy Indiana, Inc.,LLC, Duke Energy Kentucky, Inc., Duke Energy Progress, Inc., Duke Energy Florida, Inc., and Wells Fargo Bank, National Association, dated as of December 18, 2013 (incorporated by reference to Exhibit 10.1 to registrant's Current Report on Form 8-K filed on December 23, 2013, File Nos. 1-32853, 1-4928, 1-3382, 1-3274, 1-1232 and 1-3543).X X   X X X X
10.28.2Amendment No. 2 and Consent between Duke Energy Corporation, Duke Energy Carolinas, LLC, Duke Energy Ohio, Inc., Duke Energy Indiana, Inc.,LLC, Duke Energy Kentucky, Inc., Duke Energy Progress, Inc., and Duke Energy Florida, Inc., the Lenders party hereto, the issuing Lenders party hereto, Wells Fargo Bank, National Association, as Administrative Agent and Swingline Lender, dated as of January 30, 2015 (incorporated by reference to Exhibit 10.1 of registrant's Current Report on Form 8-K filed on February 5, 2015, File Nos. 1-32853, 1-4928, 1-1232, 1-3543, 1-3382 and 1-3274).X X   X X X X
10.29**Duke Energy Corporation 2010 Long-termLong-Term Incentive Plan (incorporated by reference to Appendix A to registrant's Form DEF 14A filed on March 22, 2010, File No. 1-32853).X                        
10.29.1**Amendment to Duke Energy Corporation 2010 Long-Term Incentive Plan (incorporated by reference to Exhibit 10.3 to registrant's Quarterly Report on Form 10-Q for the quarter ended June 30, 2012 filed on August 8, 2012, File No. 1-32853).X                        
10.30**Form of Performance Award Agreement of Duke Energy Corporation under the Duke Energy Corporation 2010 Long-Term Incentive Plan (incorporated by reference to Exhibit 10.1 to registrant's Current Report on Form 8-K filed on February 22, 2011, File No. 1-32853).X
10.31**Form of Phantom Stock Award Agreement of Duke Energy Corporation under the Duke Energy Corporation 2010 Long-Term Incentive Plan (incorporated by reference to Exhibit 10.2 to registrant's Current Report on Form 8-K filed on February 22, 2011, File No. 1-32853).X
10.32**Duke Energy Corporation 2015 Long-Term Incentive Plan (incorporated by reference to Appendix A to registrant's DEF 14A filed on March 26, 2015, File No. 1-32853).X            
10.33*10.31**Form of Restricted Stock Unit Award Agreement of Duke Energy Corporation under the Duke Energy Corporation 2015 Long-Term Incentive Plan (incorporated by reference to Exhibit 10.1 to registrant's Current Report on Form 8-K filed on May 12, 2015, File No. 1-32853).X            
10.34*10.32**Form of Performance Award Agreement of Duke Energy Corporation under the Duke Energy Corporation 2015 Long-Term Incentive Plan (incorporated by reference to Exhibit 10.2 to registrant's Current Report on Form 8-K filed on May 12, 2015, File No. 1-32853).X            
10.35*10.33**Form of Performance Award Agreement of Duke Energy Corporation under the Duke Energy Corporation 2015 Long-Term Incentive Plan (incorporated by reference to Exhibit 10.1 to registrant's Current Report on Form 8-K filed on February 18, 2016, File No. 1-32853).X            
10.36*10.34**Form of Restricted Stock Unit Award Agreement of Duke Energy Corporation under the Duke Energy Corporation 2015 Long-Term Incentive Plan (incorporated by reference to Exhibit 10.2 to registrant's Current Report on Form 8-K filed on February 18, 2016, File No. 1-32853).X            
10.3710.35Settlement Agreement between Duke Energy Corporation, the North Carolina Utilities Commission Staff and the North Carolina Public Staff, dated as of November 28, 2012 (incorporated by reference to Exhibit 10.1 to registrant's Current Report on Form 8-K filed on November 29, 2012, File No. 1-32853).X                        
10.3810.36Settlement Agreement between Duke Energy Corporation and the North Carolina Attorney General, dated as of December 3, 2012 (incorporated by reference Item 7.01 to registrant's Current Report on Form 8-K filed on December 3, 2012, File No. 1-32853).X                        
10.39*10.37**Form of Change-in-Control Agreement (incorporated by reference to Exhibit 10.58 to Duke Energy Corporation's Annual Report on Form 10-K for the year ended December 31, 2012 filed on March 1, 2013, File No. 1-32853).X                        
10.40**Form of Performance Share Award (incorporated by reference to Exhibit 10.64 to Duke Energy Corporation's Annual Report on Form 10-K for the year ended December 31, 2012, filed on March 1, 2013, File No. 1-32853).X
10.41*10.38**Amended and Restated Duke Energy Corporation Executive Cash Balance Plan, dated as of January 1, 2014 (incorporated by reference to Exhibit 10.52 to Duke Energy Corporation's Annual Report on Form 10-K for the year ended December 31, 2013 filed on February 28, 2014, File No. 1-32852).X                        
10.4210.39Purchase, Construction and Ownership Agreement, dated as of July 30, 1981, between Duke Energy Progress, Inc. (formerly Carolina Power & Light Company) and North Carolina Municipal Power Agency Number 3 and Exhibits, together with resolution, dated as of December 16, 1981, changing name to North Carolina Eastern Municipal Power Agency, amending letter, dated as of February 18, 1982, and amendment, dated as of February 24, 1982 (incorporated by reference to Exhibit 10(a) to registrant's File No. 33-25560).            X            
10.4310.40Operating and Fuel Agreement, dated as of July 30, 1981, between Duke Energy Progress, Inc. (formerly Carolina Power & Light Company) and North Carolina Municipal Power Agency Number 3 and Exhibits, together with resolution, dated as of December 16, 1981, changing name to North Carolina Eastern Municipal Power Agency, amending letters, dated as of August 21, 1981 and December 15, 1981, and amendment, dated as of February 24, 1982 (incorporated by reference to Exhibit 10(b) to registrant's File No. 33-25560).            X            
10.4410.41Power Coordination Agreement, dated as of July 30, 1981, between Duke Energy Progress, Inc. (formerly Carolina Power & Light Company) and North Carolina Municipal Power Agency Number 3 and Exhibits, together with resolution, dated as of December 16, 1981, changing name to North Carolina Eastern Municipal Power Agency and amending letter, dated as of January 29, 1982 (incorporated by reference to Exhibit 10(c) to registrant's File No. 33-25560).            X            
10.4510.42Amendment, dated as of December 16, 1982, to Purchase, Construction and Ownership Agreement, dated as of July 30, 1981, between Duke Energy Progress, Inc. (formerly Carolina Power & Light Company) and North Carolina Eastern Municipal Power Agency (incorporated by reference to Exhibit 10(d) to registrant's File No. 33-25560).            X            
10.46+10.43**Progress Energy, Inc. 2007 Equity Incentive Plan (incorporated by reference to Exhibit C to registrant's Form DEF 14A filed on March 30, 2007, File No. 1-15929).        X                
10.47+10.44**Form of Letter Agreement executed by certain officers of Progress Energy, Inc., waiving certain rights under Progress Energy, Inc.’s Management Change-in-Control Plan and their employment agreements, dated as of January 8, 2011 (incorporated by reference to Exhibit 10.1 to registrant's Current Report on Form 8-K filed on January 8, 2011, File No. 1-15929).        X                
10.48+10.45**Progress Energy, Inc. Management Change-in-Control Plan, Amended and Restated, effective July 13, 2011 (incorporated by reference to Exhibit 10(d) to registrant's Quarterly Report on Form 10-Q for the quarter ended September 30, 2011 filed on November 8, 2011, File Nos. 1-15929, 1-3382 and 1-3274).        X  X  X        
10.49+Form of Progress Energy, Inc. Restricted Stock Unit Award Agreement (Graded Vesting), effective September 15, 2011.XXX
10.50+Form of Progress Energy, Inc. Restricted Stock Unit Award Agreement (Cliff Vesting), effective September 15, 2011.XXX
10.5110.46
Precedent and Related Agreements between Duke Energy Florida, Inc. (formerly Florida Power
Corporation d/b/a Progress Energy Florida, Inc. (“PEF”)), Southern Natural Gas Company, Florida
Gas Transmission Company (“FGT”), and BG LNG Services, LLC (“BG”), including:
a) Precedent Agreement between Southern Natural Gas Company and PEF, dated as of
December 2, 2004;
b) Gas Sale and Purchase Contract between BG and PEF, dated as of December 1, 2004;
c) Interim Firm Transportation Service Agreement by and between FGT and PEF, dated as of
December 2, 2004;
d) Letter Agreement between FGT and PEF, dated as of December 2, 2004 and
Firm Transportation Service Agreement between FGT and PEF to be entered into upon satisfaction
of certain conditions precedent;
e) Discount Agreement between FGT and PEF, dated as of December 2, 2004;
f) Amendment to Gas Sale and Purchase Contract between BG and PEF, dated as of January 28,
2005; and
g) Letter Agreement between FGT and PEF, dated as of January 31, 2005 (incorporated by
reference to Exhibit 10.1 to registrant's Current Report on Form 8-K/A filed on March 15, 2005, File
Nos. 1-15929 and 1-3274). (Portions of the exhibit have been omitted and filed separately with the
Securities and Exchange Commission pursuant to a request for confidential treatment pursuant to Rule 24b-2 under the Securities Exchange Act of 1934, as amended).amended.)
    X   X    
10.5210.47Engineering, Procurement and Construction Agreement between Duke Energy Florida, Inc. (formerly Florida Power Corporation d/b/a/ Progress Energy Florida, Inc.), as owner, and a consortium consisting of Westinghouse Electric Company LLC and Stone & Webster, Inc., as contractor, for a two-unit AP1000 Nuclear Power Plant, dated as of December 31, 2008 (incorporated by reference to Exhibit 10.1 to registrant's Current Report on Form 8-K filed on March 2, 2009, File Nos. 1-15929 and 1-3274). (Portions of the exhibit have been omitted and filed separately with the Securities and Exchange Commission pursuant to a request for confidential treatment pursuant to Rule 24b-2 under the Securities Exchange Act of 1934, as amended).amended.)        X      X        
10.53*10.48**Employment Agreement between Duke Energy Corporation and Lynn J. Good, dated as of June 17, 2013 (incorporated by reference to Exhibit 10.1 to Duke Energy Corporation's Current Report on Form 8-K filed on June 18, 2013, File No. 1-32853).X                        
10.53.1*10.48.1**Amendment to Employment Agreement between Duke Energy Corporation and Lynn J. Good, dated as of June 25, 2015 (incorporated by reference to Exhibit 10.1 to Duke Energy Corporation's Current Report on Form 8-K filed on June 29, 2015, File No. 1-32853).X            
10.54*10.49**Duke Energy Corporation Executive Short-Term Incentive Plan, effective February 25, 2013 (incorporated by reference to Exhibit 10.1 to Duke Energy Corporation's Current Report on Form 8-8-K filed on May 7, 2013, File No. 1-32853).X                        
*10.55*10.50**Duke Energy Corporation 2016 Director Compensation Program Summary (incorporated by reference to Exhibit 10.55 to Duke Energy Corporation's Annual Report on Form 10-K for the year ended December 31, 2015 filed on February 25, 2016, File No. 1-32853).X            
10.56*10.51**Amended and Restated Duke Energy Corporation Executive Savings Plan, dated as of January 1, 2014 (incorporated by reference to Exhibit 10.82 to Duke Energy Corporation's Annual Report on Form 10-K for the year ended December 31, 2013 filed on February 28, 2014, File No. 1-32853).X            
10.5710.52Agreement between Duke Energy SAM, LLC, Duke Energy Ohio, Inc., Duke Energy Commercial Enterprise, Inc. and Dynegy Resource I, LLC, dated as of August 21, 2014 (incorporated by reference to Exhibit 10.61 to Duke Energy Corporation's Annual Report on Form 10-K for the year ended December 31, 2014 filed on March 2, 2015, File No. 1-32853).X         X  
10.5810.53Asset Purchase Agreement between Duke Energy Progress, Inc. and North Carolina Eastern Municipal Power Agency, dated as of September 5, 2014 (incorporated by reference to Exhibit 10.62 to Duke Energy Corporation's Annual Report on Form 10-K for the year ended December 31, 2014 filed on March 2, 2015, File No. 1-32853).X     X      
10.5910.54Change in Control Agreement between Duke Energy Corporation and Lloyd M. Yates, dated as of April 30, 2014 (incorporated by reference to Exhibit 10.1 to Duke Energy Corporation's Current Report on Form 8-K filed on May 6, 2014, File No. 1-32853).X            
10.6010.55Accelerated Stock Repurchase Program executed by Goldman, Sachs & Co., and JPMorgan Chase Bank, N.A. on April 6, 2015, under an agreement with Duke Energy Corporation (incorporated by reference to Exhibit 10.1 to Duke Energy Corporation's Current Report on Form 8-K filed on April 6, 2015, File No. 1-32853).X            
10.6110.56Plea Agreement between Duke Energy Corporation and the Court of the Eastern District of North Carolina in connection with the May 14, 2015, Dan River Grand Jury Settlement (incorporated by reference to Exhibit 10.3 to Duke Energy Corporation's Quarterly Report on Form 10-Q for the quarter ended June 30, 2015, filed on August 7, 2015, File No. 1-32853).X            
10.6210.57Plea Agreement between Duke Energy Corporation and the Court of the Eastern District of North Carolina in connection with the May 14, 2015, Dan River Grand Jury Settlement (incorporated by reference to Exhibit 10.4 to Duke Energy Corporation's Quarterly Report on Form 10-Q for the quarter ended June 30, 2015 filed on August 7, 2015, File No. 1-32853).X
10.58$1,500,000,000 Amended and Restated Term Loan Agreement among Duke Energy Corporation, as Borrower, the Lenders listed therein, The Bank of Tokyo-Mitsubishi UFJ, Ltd., as Administrative Agent, and The Bank of Tokyo-Mitsubishi UFJ, Ltd., Santander Bank, N.A. and TD Bank, N.A., as Joint Lead Arrangers and Bookrunners, dated as of August 1, 2016 (incorporated by reference to Exhibit 10.1 to Duke Energy Corporation's Quarterly Report on Form 10-Q for the quarter ended June 30,2016 filed on August 4, 2016, File No. 1-32853).X
10.59
Purchase and Sale Agreement by and among Duke Energy International Group S.à.r.l., Duke Energy International Brazil Holdings S.à.r.l. and China Three Gorges (Luxembourg) Energy S.à.r.l., dated as of October 10, 2016 (incorporated by reference to Exhibit 2.1 to registrant's Current Report on Form 8-K filed on October 13, 2016, File No. 1-32853).
X
10.60Purchase and Sale Agreement by and among Duke Energy Brazil Holdings II, C.V., Duke Energy International Uruguay Investments SRL, Duke Energy International Group S.à.r.l., Duke Energy International España Holdings SL, Duke Energy International Investments No. 2 Ltd., ISQ Enerlam Aggregator, L.P., and Enerlam (UK) Holdings Ltd., dated as of October 10, 2016 (incorporated by reference to Exhibit 2.2. to registrant's Current Report on Form 8-K filed on October 13, 2016, File No. 1-32853).X
10.61**Amended and Restated Employment Agreement, dated May 25, 2012, between Piedmont Natural Gas Company, Inc. and Franklin H. Yoho (incorporated by reference to Exhibits 10.12 and 10.13 to registrant's Annual Report on Form 10-K for the year ended October 31, 2015 filed on December 23, 2015, File No. 1-06196).X
10.62**Severance Agreements with Thomas E. Skains and Franklin H. Yoho, dated September 4, 2007 (incorporate by reference to Exhibits 10.2 and 10.3, respectively, to registrant's Annual Report on Form 10-K for the year ended October 31, 2015 filed on December 23, 2015, File No. 1-06196).X
10.63**Piedmont Natural Gas Company, Inc. Defined Contribution Restoration Plan, dated as of December 8, 2008, effective January 1, 2009 (incorporated by reference to Exhibit 10.2 to registrant's Quarterly Report on Form 10-Q for the quarter ended January 31, 2009 filed on March 9, 2009, File No. 1-06196).X
10.63.1**Instrument of Amendment for Piedmont Natural Gas Company, Inc. Defined Contribution Restoration Plan, dated as of January 23, 2012, by Piedmont Natural Gas Company, Inc. (incorporated by reference to Exhibit 10.1 to registrant's Quarterly Report on Form 10-Q for the quarter ended January 31, 2012 filed on March 9, 2012, File No. 1-06196).X
*10.63.2**Instrument of Second Amendment for Piedmont Natural Gas Company, Inc. Defined Contribution Restoration Plan, dated September 15, 2016.X
*10.64**Piedmont Natural Gas Company, Inc. Incentive Compensation Plan.X
10.64.1**First Amendment to Piedmont Natural Gas Company, Inc. Incentive Compensation Plan (incorporated by reference to Exhibit 4.2 to registrant's Registration Statement on Form S-8 filed on October 3, 2016, File No. 1-32853).X
10.65**Form of Performance Unit Award Agreement (incorporated by reference to Exhibit 10.4 to registrant's Quarterly Report on Form 10-Q for the quarter ended January 31, 2016 filed on March 9, 2016, File No. 1-06196).X
*10.66**Waiver of Certain Rights to Terminate for Good Reason between Duke Energy Corporation and Franklin H. Yoho.X
*10.67**Notice of Non-Renewal of Employment Agreement between Duke Energy Corporation and Franklin H. Yoho.X
*10.68**Retention Award Agreement, dated as of October 24, 2015, between Duke Energy Corporation and Franklin H. Yoho.X
10.69Confirmation of Forward Sale Transaction, dated as of March 1, 2016, between Duke Energy Corporation and Barclays Capital Inc. (incorporated by referenced to Exhibit 10.1 to registrant's Current Report on Form 8-K filed on March 7, 2016, File No. 1-32853).X
10.69.1Additional Confirmation of Forward Sale Transaction, dated as of March 2, 2016, between Duke Energy Corporation and Barclays Capital Inc. (incorporated by reference to Exhibit 10.2 to registrant's Current Report on Form 8-K filed on March 7, 2016, File No. 1-32853).X            
*12.1Computation of Ratio of Earnings to Fixed Charges – DUKE ENERGY CORPORATIONX                        
*12.2Computation of Ratio of Earnings to Fixed Charges – DUKE ENERGY CAROLINAS, LLC    X                    
*12.3Computation of Ratio of Earnings to Fixed Charges – PROGRESS ENERGY, INC.        X                
*12.4Computation of Ratio of Earnings to Fixed Charges – DUKE ENERGY PROGRESS, LLC            X            
*12.5Computation of Ratio of Earnings to Fixed Charges – DUKE ENERGY FLORIDA, LLC                X        
*12.6Computation of Ratio of Earnings to Fixed Charges – DUKE ENERGY OHIO, INC.                    X    
*12.7Computation of Ratio of Earnings to Fixed Charges – DUKE ENERGY INDIANA, INC.LLC                        X
*21List of SubsidiariesX                        
*23.1.1Consent of Independent Registered Public Accounting Firm.X                        
*23.1.2Consent of Independent Registered Public Accounting Firm.    X                    
*23.1.3Consent of Independent Registered Public Accounting Firm.            X            
*23.1.4Consent of Independent Registered Public Accounting Firm.                X        
*23.1.5Consent of Independent Registered Public Accounting Firm.                    X    
*23.1.6Consent of Independent Registered Public Accounting Firm.                        X
*24.1Power of attorney authorizing Lynn J. Good and others to sign the annual report on behalf of the registrant and certain of its directors and officers.X                        
*24.2Certified copy of resolution of the Board of Directors of the registrant authorizing power of attorney.X                        
*31.1.1Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.X                        
*31.1.2Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.    X                    
*31.1.3Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.        X                
*31.1.4Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.            X            
*31.1.5Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.                X        
*31.1.6Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.                    X    
*31.1.7Certification of the Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.                        X
*31.2.1Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.X                        
*31.2.2Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.    X                    
*31.2.3Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.        X                
*31.2.4Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.            X            
*31.2.5Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.                X        
*31.2.6Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.                    X    
*31.2.7Certification of the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.                   ��    X
*32.1.1Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.X                        
*32.1.2Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.    X                    
*32.1.3Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.        X                
*32.1.4Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.            X            
*32.1.5Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.                X        
*32.1.6Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.                    X    
*32.1.7Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.                        X
*32.2.1Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.X                        
*32.2.2Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.    X                    
*32.2.3Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.        X                
*32.2.4Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.            X            
*32.2.5Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.                X        
*32.2.6Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.                    X    
*32.2.7Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.                        X
*101.INSXBRL Instance DocumentX  X  X  X  X  X  X
*101.SCHXBRL Taxonomy Extension Schema DocumentX  X  X  X  X  X  X
*101.CALXBRL Taxonomy Calculation Linkbase DocumentX  X  X  X  X  X  X
*101.LABXBRL Taxonomy Label Linkbase DocumentX  X  X  X  X  X  X
*101.PREXBRL Taxonomy Presentation Linkbase DocumentX  X  X  X  X  X  X
*101.DEFXBRL Taxonomy Definition Linkbase DocumentX  X  X  X  X  X  X
The total amount of securities of the registrant or its subsidiaries authorized under any instrument with respect to long-term debt not filed as an exhibit does not exceed 10 percent of the total assets of the registrant and its subsidiaries on a consolidated basis. The registrant agrees, upon request of the SEC, to furnish copies of any or all of such instruments to it.

E-1