SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31 ~~2021~~

☐ 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 001-31303

BLACK HILLS CORPORATION

Incorporated in South Dakota IRS Identification Number 46-0458824

7001 Mount Rushmore Road

Rapid City, South Dakota57702

Registrant’s telephone number ~~(605)~~ (605) 721-1700

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol

Name of each exchange on which registered

Common stock of $1.00 par value

BKH

New York Stock Exchange


Indicate the number of shares outstanding of each of the registrant’s classes of common stock, as of the latest practicable date.
Class	Outstanding at January 31, ~~2022~~2024
Common stock, $1.00 par value	~~64,738,725~~ 68,196,551	shares

Documents Incorporated by Reference

GLOSSARY OF TERMS AND ABBREVIATIONS

The following terms and abbreviations appear in the text of this report and have the definitions described below:


AC	Alternating Current
AFUDC	Allowance for Funds Used During Construction
AOCI	Accumulated Other Comprehensive Income (Loss)
APSC	Arkansas Public Service Commission
Arkansas Gas	Black Hills Energy Arkansas, Inc., an indirect, wholly-owned subsidiary of Black Hills Utility Holdings, providing natural gas services to customers in Arkansas (doing business as Black Hills Energy).
ARO	Asset Retirement ~~Obligations~~Obligation
ASC	Accounting Standards Codification
ASU	Accounting Standards Update as issued by the FASB
ATM	At-the-market equity offering program
Availability	The availability factor of a power plant is the percentage of the time that it is available to provide energy.
BHC	Black Hills Corporation; the Company
BHSC	Black Hills Service Company, LLC, a direct, wholly-owned subsidiary of Black Hills Corporation (doing business as Black Hills Energy)
Black Hills Colorado IPP	Black Hills Colorado IPP, LLC, a 50.1% owned subsidiary of Black Hills Electric Generation
Black Hills Electric Generation	Black Hills Electric Generation, LLC, a direct, wholly-owned subsidiary of Black Hills Non-regulated Holdings, providing wholesale electric capacity and energy primarily to our affiliate utilities.
Black Hills Energy	The name used to conduct the business of our ~~utility companies~~Utilities
Black Hills Energy Renewable Resources (BHERR)	Black Hills Energy Renewable Resources, LLC, a direct, wholly-owned subsidiary of Black Hills Non-regulated Holdings
Black Hills Energy Services	Black Hills Energy Services Company, an indirect, wholly-owned subsidiary of Black Hills Utility Holdings, providing natural gas commodity supply for the Choice Gas Programs (doing business as Black Hills Energy).
Black Hills Non-regulated Holdings	Black Hills Non-regulated Holdings, LLC, a direct, wholly-owned subsidiary of Black Hills Corporation
Black Hills Power	Black Hills Power, Inc., a direct, wholly-owned subsidiary of Black Hills Corporation (doing business as Black Hills Energy). Also known as South Dakota Electric.
Black Hills Utility Holdings	Black Hills Utility Holdings, Inc., a direct, wholly-owned subsidiary of Black Hills Corporation (doing business as Black Hills Energy)
Black Hills Wyoming	Black Hills Wyoming, LLC, a direct, wholly-owned subsidiary of Black Hills Electric Generation
Blockchain Interruptible Service (BCIS) Tariff	A WPSC-approved tariff applicable to prospective new Wyoming Electric blockchain customers. The tariff allows customers to negotiate rates and terms and conditions for interruptible electric utility service of 10 MW or greater that would be interconnected with Wyoming Electric’s system. Agreements under the BCIS tariff must be filed with the WPSC prior to the first customer billing, be at least 2 years in duration and include specific pricing for all electricity purchased (with pricing terms subject to renegotiation every three years). BCIS customers shall not participate in the PCA to the extent of service received under the tariff.
Btu	British thermal unit
Busch Ranch I	The 29 MW wind farm near Pueblo, Colorado, jointly owned by Colorado Electric and Black Hills Electric Generation. Colorado Electric and Black Hills Electric Generation each have a 50% ownership interest in the wind farm. Black Hills Electric Generation provides its share of energy from the wind farm to Colorado Electric through a PPA, which expires in October 2037.
Busch Ranch II	The 59.4 MW wind farm near Pueblo, Colorado owned by Black Hills Electric Generation to provide wind energy to Colorado Electric through a PPA expiring in November 2044.

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CACJA Adjustment	Clean Air Clean Jobs Act Adjustment is an adjustment mechanism that allows Colorado Electric to collect from customers the capital costs related to Pueblo Airport Generation CT #6.
~~CARES Act~~	Coronavirus Aid, Relief, and Economic Security Act, signed on March 27, 2020, which is a tax and spending package intended to provide additional economic relief and address the impact of the COVID-19 pandemic.
CFTC		United States Commodity Futures Trading Commission
Cheyenne Light	Cheyenne Light, Fuel and Power Company, a direct, wholly-owned subsidiary of Black Hills Corporation, providing electric service in the Cheyenne, Wyoming area (doing business as Black Hills Energy). Also known as Wyoming Electric.
Cheyenne Prairie	Cheyenne Prairie Generating Station located in Cheyenne, Wyoming serves the utility customers of South Dakota Electric and Wyoming Electric. The facility includes one simple-cycle, 40 MW combustion turbine that is wholly-owned by Wyoming Electric and one combined-cycle, 100 MW unit that is jointly-owned by Wyoming Electric (42 MW) and South Dakota Electric (58 MW).
~~Chief Operating Decision Maker (CODM)~~	~~Chief Executive Officer~~
Choice Gas Program		Regulator-approved programs in Wyoming and Nebraska that allow certain utility customers to select their natural gas commodity supplier, providing the unbundling of the commodity service from the distribution delivery service.


~~City of Colorado Springs~~		~~Colorado Springs, Colorado~~
City of Gillette		Gillette, Wyoming


Clean Energy Plan	2030 Ready Plan that establishes a roadmap and preferred resource portfolio for Colorado Electric to cost-effectively achieve the State of Colorado’s requirement calling upon electric utilities to reduce GHG emissions by a minimum of 80% from 2005 levels by 2030. Based on initial modeling, the preferred resource portfolio proposes the addition of approximately 400 MW of clean energy resources (100 MW of wind, 200-250 MW of solar and 50 MW of battery storage) to Colorado Electric's system. The final mix of resources will be determined by the results of a competitive solicitation that was issued in July 2023. Colorado legislation allows electric utilities to own up to 50% of the renewable generation assets added to comply with the Clean Energy Plan.
CO2	Carbon dioxide
Chief Operating Decision Maker (CODM)	Chief Executive Officer
Colorado Electric	Black Hills Colorado Electric, LLC, a direct, wholly-owned subsidiary of Black Hills ~~Utility~~Electric Parent Holdings, providing electric service to customers in Colorado (doing business as Black Hills Energy).
Colorado Gas	Black Hills Colorado Gas, Inc., an indirect, wholly-owned subsidiary of Black Hills Utility Holdings, providing natural gas services to customers in Colorado (doing business as Black Hills Energy).
Common Use System	The Common Use System is a jointly operated transmission system we participate in with Basin Electric Power Cooperative and Powder River Energy Corporation. The Common Use System provides transmission service over these utilities' combined 230-kilovolt (kV) and limited 69-kV transmission facilities within areas of southwestern South Dakota and northeastern Wyoming.
Consolidated Indebtedness to Capitalization Ratio	Any Indebtedness outstanding at such time, divided by capital at such time. Capital being consolidated net-worth (excluding non-controlling interest) plus consolidated indebtedness (including letters of credit and certain guarantees issued) as defined within the current Revolving Credit Facility.
Cooling Degree Day	A cooling degree day is equivalent to each degree that the average of the high and low temperature for a day is above 65 degrees. The warmer the climate, the greater the number of cooling degree days. Cooling degree days are used in the utility industry to measure the relative warmth of weather and to compare relative temperatures between one geographic area and another. Normal degree days are based on the National Weather Service data for selected locations.
Corriedale	The 52.5 MW wind farm near Cheyenne, Wyoming, jointly owned by South Dakota Electric (32.5 MW) and Wyoming Electric (20 MW), serving as the dedicated wind energy supply to the Renewable Ready ~~program.~~program, which is a voluntary renewable energy subscription program for large commercial, industrial and governmental customers in South Dakota and Wyoming.
~~COVID-19~~	~~The official name for the 2019 novel coronavirus disease announced on February 11, 2020, by the World Health Organization, that is causing a global pandemic.~~


CP Program		Commercial Paper Program
CPCN	Certificate of Public Convenience and Necessity
CPUC	Colorado Public Utilities Commission
CSAPR	The United States Environmental Protection Agency's Cross-State Air Pollution Rule

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CT	Combustion Turbine
~~CTII~~	~~The 40 MW Gillette CT, a simple-cycle, gas-fired combustion turbine owned by the City of Gillette.~~
Cushion Gas		The portion of natural gas necessary to force saleable gas from a storage field into the transmission system and for system balancing, representing a permanent investment necessary to use storage facilities and maintain reliability.
~~CVA~~Cybersecurity incident	~~Credit Valuation Adjustment~~An unauthorized occurrence, or a series of related unauthorized occurrences, on or conducted through a registrant’s information systems that jeopardizes the confidentiality, integrity, or availability of a registrant’s information systems or any information residing therein.
Cybersecurity threat	Any potential unauthorized occurrence on or conducted through a registrant’s information systems that may result in adverse effects on the confidentiality, integrity or availability of a registrant’s information systems or any information residing therein.
DC	Direct Current
Dividend Payout Ratio	Annual dividends paid on common stock divided by net income from continuing operations available for common stock
DRSPP	Dividend Reinvestment and Stock Purchase Plan
DSM	Demand Side Management
Dth	Dekatherm. A unit of energy equal to 10 therms or one million British thermal units (MMBtu).
EBITDA	Earnings before interest, taxes, depreciation and amortization, a non-GAAP measure.
ECA	Energy Cost Adjustment is an adjustment that allows us to pass the prudently-incurred cost of fuel and purchased energy through to customers.
Economy Energy	Purchased energy that costs less than that produced with the utilities’ owned generation.
EECR	Energy Efficiency Cost Recovery is an adjustment mechanism that allows us to recover from customers the costs associated with providing energy efficiency programs.
EIA	Environmental Improvement Adjustment is an annual adjustment mechanism that allows us to recover from customers eligible investments in, and expense related to, new environmental measures.
EGU	Electric generating unit
Energy Assistance Benefit Charge	Energy Assistance Benefit Charge is a Colorado statutory-created surcharge to provide additional funding for bill assistance and weatherization for income-qualified customers. We collect these funds and remit them to a Colorado non-profit organization that assists low-income residents with utility bills, repairs, and energy efficiency upgrades.
Energy Transition	The global energy sector’s shift from fossil-based systems of energy production and consumption, including oil, natural gas and coal to renewable energy sources like wind and solar, as well as battery storage solutions.
EPA	United States Environmental Protection Agency
ESG	Environmental, Social and Governance
EV	Electric Vehicle
EWG	Exempt Wholesale Generator
FASB	Financial Accounting Standards Board

FERC		United States Department of Energy's Federal Energy Regulatory Commission
Fitch	Fitch Ratings Inc.
GAAP	Accounting principles generally accepted in the United States of America
Gas Price Risk Management Rider	Gas Price Risk Management Rider is a mechanism that is similar to GCA but designed to also provide a price floor and price ceiling.
GCA	Gas Cost Adjustment is an adjustment that allows us to pass the prudently-incurred cost of gas and certain services through to customers.
GHG	Greenhouse gases
Gillette Energy Complex	The Gillette Energy Complex located in Gillette, Wyoming includes 793 MW of coal-fired generating facilities (Neil Simpson II, Wygen I, Wygen II, Wygen III, Wyodak Plant) which are supplied by WRDC and a 40 MW gas-fired generation facility (Neil Simpson CT). We operate and own majority interests in five of the six facilities and own 20% of Wyodak Plant.


~~GHG~~	~~Greenhouse gases~~
Global Settlement		Settlement with a utility’s commission where the revenue requirement is agreed upon, but the specific adjustments used by each party to arrive at the amount are not specified in public rate orders.
~~Happy Jack~~GWh	~~Happy Jack Wind Farm, LLC, owned by Duke Energy Generation Services~~Gigawatt Hours
Heating Degree Day	A heating degree day is equivalent to each degree that the average of the high and the low temperatures for a day is below 65 degrees. The colder the climate, the greater the number of heating degree days. Heating degree days are used in the utility industry to measure the relative coldness of weather and to compare relative temperatures between one geographic area and another. Normal degree days are based on the National Weather Service data for selected locations.
HomeServe	We offer HomeServe products to our natural gas residential customers interested in purchasing additional home repair service plans.
Information systems	Electronic information resources, owned or used by the registrant, including physical or virtual infrastructure controlled by such information resources, or components thereof, organized for the collection, processing, maintenance, use, sharing, dissemination, or disposition of the registrant’s information to maintain or support the registrant’s operations.
Integrated Generation	Non-regulated power generation and mining businesses (Black Hills Electric Generation and WRDC) that are vertically integrated within our Electric Utilities segment.
Iowa Gas	Black Hills Iowa Gas Utility Company, LLC, a direct, wholly-owned subsidiary of Black Hills Utility Holdings, providing natural gas services to customers in Iowa (doing business as Black Hills Energy).
IPP	Independent Power Producer
IRA	Inflation Reduction Act of 2022
IRC	Internal Revenue Code
IRP	Integrated Resource Plan
IRS	United States Internal Revenue Service
ITC	Investment Tax Credit
~~IUB~~	~~Iowa Utilities Board~~
Kansas Gas		Black Hills Kansas Gas Utility Company, LLC, a direct, wholly-owned subsidiary of Black Hills Utility Holdings, providing natural gas services to customers in Kansas (doing business as Black Hills Energy).
~~KCC~~kV	~~Kansas Corporation Commission~~Kilovolt
kV	~~Kilovolt~~
LIBOR		London Interbank Offered Rate
Mcf	Thousand cubic feet
Mcfd	Thousand cubic feet per day
MDU	Montana-Dakota Utilities Co., a subsidiary of MDU Resources Group, Inc.
MEAN	Municipal Energy Agency of Nebraska
~~MISO~~	~~Midcontinent Independent System Operator, Inc.~~
MMBtu		Million British thermal units
Moody’s	Moody’s Investors Service, Inc.
MSHA	United States Department of Labor’s Mine Safety and Health Administration
MW	Megawatts
MWMWh	~~Megawatts~~Megawatt-hours
~~MWh~~	~~Megawatt-hours~~
N/A		Not Applicable
NAAQS	National Ambient Air Quality Standards
NAV	Net Asset Value
Nebraska Gas	Black Hills Nebraska Gas, LLC, an indirect, wholly-owned subsidiary of Black Hills Utility Holdings, providing natural gas services to customers in Nebraska (doing business as Black Hills Energy).
Neil Simpson II	A mine-mouth, coal-fired power plant owned and operated by South Dakota Electric with a total capacity of 90 MW located at our Gillette ~~Wyoming energy complex.~~Energy Complex.
NERC	North American Electric Reliability Corporation
NOxX	Nitrogen oxide

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NOL	Net Operating Loss
~~NPSC~~Northern Iowa Windpower	~~Nebraska Public Service Commission~~Northern Iowa Windpower, LLC, a 87.1 MW wind farm located near Joice, Iowa, previously owned by Black Hills Electric Generation. In March 2023, Black Hills Electric Generation completed the sale of Northern Iowa Windpower assets to a third-party.

OCI		Other Comprehensive Income
OPEB	Other Post-Employment Benefits
OSHA	United States Department of Labor’s Occupational Safety & Health Administration
OSM	United States Department of the Interior’s Office of Surface Mining
PacifiCorp	PacifiCorp, a wholly owned subsidiary of MidAmerican Energy Holdings Company, itself an affiliate of Berkshire Hathaway.


PCA	Power Cost Adjustment is an annual adjustment mechanism that allows us to pass a portion of prudently-incurred delivered power costs, including fuel, purchased capacity and energy, and transmission costs, through to customers.
PCCA	Power Capacity Cost Adjustment is an annual adjustment that allows us to pass the prudently-incurred purchased capacity costs, incremental to costs included in base rates, through to customers.
Peak View	The 60.8 MW wind farm owned by Colorado Electric.
PHMSA	United States Department of Transportation's Pipeline and Hazardous Materials Safety Administration
PPA	Power Purchase Agreement
~~PRPA~~	~~Platte River Power Authority~~
PSA		Power Sales Agreement
PTC	Production Tax Credit
Pueblo Airport Generation	~~The~~Pueblo Airport Generating Station located in Pueblo, Colorado includes 440 MW of combined cycle gas-fired power generation plants jointly owned by Colorado Electric (240 MW) and Black Hills Colorado IPP (200 MW). Black Hills Colorado IPP owns and operates this facility. The plants commenced operation on January 1, 2012.
PUHCA 2005	Public Utility Holding Company Act of 2005
Ready	The Company’s branding platform which emphasizes that we will 1) prioritize our customers; 2) act as a thoughtful, responsible leader; 3) listen first and lead with a focus on relationships; and 4) be creative in our approach to solutions.
Ready Wyoming	A ~~285-mile,~~260-mile, multi-phase transmission expansion project in Wyoming. This transmission project ~~will~~is expected to serve the growing needs of customers by enhancing resiliency of Wyoming Electric’s overall electric system and expanding access to power markets and renewable resources. The project ~~will~~is expected to help Wyoming Electric maintain top-quartile reliability and enable economic development in the Cheyenne, Wyoming region.

~~Renewable Ready~~		~~Voluntary renewable energy subscription program for large commercial, industrial and governmental customers in South Dakota and Wyoming.~~
RESA		Renewable Energy Standard Adjustment is an incremental retail rate limited to 2% for Colorado Electric customers that provides funding for renewable energy projects and programs to comply with Colorado’s Renewable Energy Standard.
Revolving Credit Facility	Our $750 million credit facility used to fund working capital needs, letters of credit and other corporate purposes, which was amended on May 9, 2023 and ~~restated~~will terminate on July 19, ~~2021,~~2026. This facility includes an accordion feature that allows us to increase total commitments up to $1.0 billion with the consent of the administrative agent, the issuing agents and ~~now terminates on July 19, 2026.~~each bank increasing or providing a new commitment.
RMNG	Rocky Mountain Natural Gas LLC, an indirect, wholly-owned subsidiary of Black Hills Utility Holdings, providing natural gas transmission and wholesale services in western Colorado (doing business as Black Hills Energy).
RNG	Renewable natural gas
RTO	Regional Transmission Organization
SDPUC	South Dakota Public Utilities Commission
SEC	United States Securities and Exchange Commission
Service Guard Comfort Plan	Appliance protection plan that provides home appliance repair services through on-going monthly service agreements to residential utility customers.
~~Silver Sage~~	~~Silver Sage Windpower, LLC, owned by Duke Energy Generation Services~~
SO2		Sulfur dioxide
SOFR	Secured Overnight Financing Rate

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S&P	S&P Global Ratings, a division of S&P Global Inc.
~~SourceGas Transaction~~	On February 12, 2016, Black Hills Utility Holdings acquired SourceGas pursuant to a purchase and sale agreement executed on July 12, 2015 for approximately $1.89 billion, which included the assumption of $760 million in debt at closing.
South Dakota Electric		Black Hills Power, Inc., a direct, wholly-owned subsidiary of Black Hills Corporation, providing electric service to customers in Montana, South Dakota and Wyoming (doing business as Black Hills Energy).
SPP	Southwest Power Pool, a regional transmission organization (RTO) that oversees the bulk electric grid and wholesale power market in the central United States.
SSIR	System Safety and Integrity Rider is a mechanism that allows us to recover the costs associated with certain pipeline safety and integrity investments, including the replacement of higher risk pipe, the improvement of the data management system, and the mitigation of other safety issues identified on our natural gas system.
System Peak Demand	Represents the highest point of retail customer usage for a single hour.
TCA	Transmission Cost Adjustment is an annual adjustment mechanism that allows us to recover from customers eligible transmission investments prior to the next rate review.
TCAM	Transmission Cost Adjustment Mechanism is a WPSC-approved tariff based on a formulaic approach that determines the recovery of Wyoming Electric's transmission costs.
TCJA	Tax Cuts and Jobs Act enacted on December 22, 2017, which reduced the U.S. federal corporate tax rate from 35% to 21%. As such, we remeasured our deferred income taxes at the 21% federal tax rate as of December 31, 2017.
Tech Services	Non-regulated product lines delivered by our Utilities that 1) provide electrical system construction services to large industrial customers of our electric utilities, and 2) serve gas transportation customers throughout its service territory by constructing and maintaining customer-owned gas infrastructure facilities, typically through one-time contracts.
~~Top of Iowa~~TEPR	~~Northern Iowa Windpower, LLC,~~Transportation Electrification Program Rider is a ~~87.1 MW wind farm located near Joice, Iowa, owned by Black Hills Electric Generation and operated by a third-party. We sell the wind energy generated in the MISO market.~~CPUC-approved mechanism associated with Colorado Electric's EV program.


TFA	Transmission Facility Adjustment is an annual adjustment mechanism that allows us to recover charges for qualifying new and modified transmission facilities from customers.
Transmission Tie	South Dakota Electric owns 35% of a DCAC-DC-AC transmission tie that interconnects the Western and Eastern transmission grids, which are independently-operated transmission grids serving the western and eastern United States, respectively. Basin Electric Power Cooperative owns the remaining ownership percentage. This transmission tie allows us to buy and sell energy in the Eastern grid without having to isolate and physically reconnect load or generation between the two transmission grids, thus enhancing the reliability of our system. It accommodates scheduling transactions in both directions simultaneously, provides additional opportunities to sell excess generation or to make economic purchases to serve our native load and contract obligations, and enables us to take advantage of power price differentials between the two grids. The total transfer capacity of the tie is 400 MW, including 200 MW from West to East and 200 MW from East to West.
TSA	United States Department of Homeland ~~Security’s~~Security's Transportation Security Administration
Utilities	Black Hills’ Electric and Gas Utilities
VEBA	Voluntary Employee Benefit Association
VIE	Variable Interest Entity
WEIS	Western Energy Imbalance Service
Wind Capacity Factor	Measures the amount of electricity a wind turbine produces in a given time period relative to its maximum potential
Winter Storm Uri	February 2021 winter weather event that caused extreme cold temperatures in the central United States and led to unprecedented fluctuations in customer demand and market pricing for natural gas and energy.
Working Capacity	Total gas storage capacity minus cushion gas
WPSC	Wyoming Public Service Commission
WRDC	Wyodak Resources Development Corp., a coal mine which is a direct, wholly-owned subsidiary of Black Hills Non-regulated Holdings, providing coal supply primarily to five on-site, mine-mouth generating facilities at our Gillette Energy Complex (doing business as Black Hills Energy).
Wygen I	A mine-mouth, coal-fired generating facility with a total capacity of 90 MW located at our Gillette ~~Wyoming energy complex.~~Energy Complex. Black Hills Wyoming owns 76.5% of the facility and Municipal Energy Agency of Nebraska (MEAN) owns the remaining 23.5%.

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Wygen II	A mine-mouth, coal-fired power plant owned by Wyoming Electric with a total capacity of 95 MW located at our Gillette ~~Wyoming energy complex.~~Energy Complex.
Wygen III	A mine-mouth, coal-fired power plant operated by South Dakota Electric with a total capacity of 116 MW located at our Gillette ~~Wyoming energy complex.~~Energy Complex. South Dakota Electric owns 52% of the power plant, MDU owns 25% and the City of Gillette owns the remaining 23%.
Wyodak Plant	The 402.3 MW mine-mouth, coal-fired generating facility located at our Gillette ~~Wyoming energy complex,~~Energy Complex, jointly owned by PacifiCorp (80%) and South Dakota Electric (20%). ~~Our~~ WRDC ~~mine~~ supplies all of the fuel for the facility.
Wyoming Electric	Cheyenne Light, Fuel and Power Company, a direct, wholly-owned subsidiary of Black Hills Corporation, providing electric service to customers in the Cheyenne, Wyoming area (doing business as Black Hills Energy).
Wyoming Gas	Black Hills Wyoming Gas, LLC, an indirect, wholly-owned subsidiary of Black Hills Utility Holdings, providing natural gas services to customers in Wyoming (doing business as Black Hills Energy).
Wyoming Integrity Rider	The Wyoming Integrity Rider (WIR) is a WPSC-approved tariff that allows Wyoming Gas to recover costs from customers associated with ongoing infrastructure replacement, gas meter and yard line replacement projects driven by federal regulation.

WEBSITE ACCESS TO REPORTS

The reports we file with the SEC are available free of charge at our website www.blackhillscorp.com as soon as reasonably practicable after they are filed. In addition, the charters of our Audit, Governance and Compensation Committees are located on our website along with our Code of Business Conduct, Code of Ethics for our Chief Executive Officer and Senior Finance Officers, Corporate Governance Guidelines of the Board of Directors and Policy for Director Independence. The information contained on our website is not part of this document.

FORWARD-LOOKING INFORMATION

This Form 10-K contains forward-looking statements as defined by the SEC. Forward-looking statements are all statements other than statements of historical fact, including, without limitation, those statements that are identified by the words “anticipates,” “estimates,” “expects,” “intends,” “plans,” “predicts” and similar expressions and include statements concerning plans, objectives, goals, strategies, future events or performance, and underlying assumptions and other statements that are other than statements of historical facts. From time to time, the Company may publish or otherwise make available forward-looking statements of this nature, including statements contained within Item 7 - Management’s Discussion & Analysis of Financial Condition and Results of Operations.

Forward-looking statements involve risks and uncertainties, which could cause actual results or outcomes to differ materially from those expressed. The Company’s expectations, beliefs and projections are expressed in good faith and are believed by the Company to have a reasonable basis, including, without limitation, management’s examination of historical operating trends, data contained in the Company’s records and other data available from third parties. Nonetheless, the Company’s expectations, beliefs or projections may not be achieved or accomplished.

Any forward-looking statement contained in this document speaks only as of the date on which the statement is made and the Company undertakes no obligation to update any forward-looking statement or statements to reflect events or circumstances that occur after the date on which the statement is made or to reflect the occurrence of unanticipated events. New factors emerge from time to time, such as ~~the COVID-19 pandemic~~adverse macroeconomic conditions, global pandemics or ~~Winter Storm Uri,~~severe weather events, and it is not possible for management to predict all of the factors, nor can it assess the effect of each factor on the Company’s business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statement. All forward-looking statements, whether written or oral and whether made by or on behalf of the Company, are expressly qualified by the risk factors and cautionary statements in this Annual Report on Form 10-K, including statements contained within Item 1A - Risk Factors.

History and Organization

Black Hills Corporation, a South Dakota corporation (together with its subsidiaries, referred to herein as the “Company,” “we,” “us” or “our”), is a customer-focused, growth-oriented utility company headquartered in Rapid City, South Dakota (incorporated in South Dakota in 1941).

We operate our business in the United States, reporting our operating results through our Electric Utilities and Gas Utilities segments. Certain unallocated corporate expenses that support our operating segments are presented as Corporate and Other. In the fourth quarter of 2021, we integrated our power generation and mining businesses within the Electric Utilities segment. The alignment is consistent with the current way our CODM evaluates the performance of the business and makes decisions related to the allocation of resources. Comparative periods presented reflect this change. See further segment information in ~~Note 16~~

~~of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K.~~

Our Electric Utilities segment generates, transmits and distributes electricity to approximately ~~218,000~~222,000 electric utility customers in Colorado, Montana, South Dakota and Wyoming. ~~We also own and operate non-regulated power generation and mining assets that are vertically integrated into our Electric Utilities.~~ Our Electric Utilities own ~~1,481.5~~1,394 MW of generation and ~~8,899~~9,106 miles of electric transmission and distribution lines.

Our Gas Utilities segment serves approximately ~~1,094,000~~1,116,000 natural gas utility customers in Arkansas, Colorado, Iowa, Kansas, Nebraska, and Wyoming. Our Gas Utilities own and operate ~~4,732~~4,663 miles of intrastate gas transmission pipelines and ~~41,644~~42,514 miles of gas distribution mains and service lines, ~~six~~seven natural gas storage sites, more than 50,000 horsepower of compression and ~~over 515~~516 miles of gathering lines.

We conduct electric utility operations through our Colorado, South Dakota and Wyoming subsidiaries. Our Electric Utilities generate, transmit and distribute electricity to our retail customers. Our electric generating facilities and power purchase agreements provide for the supply of electricity principally to our retail customers. ~~Additionally, we~~We also sell excess power to other utilities and marketing companies, including our affiliates. ~~We also~~Additionally, we provide non-regulated services to our retail customers under the Service Guard Comfort Plan and Tech Services.

~~Additionally, we~~

We also own and operate non-regulated power generation and mining assets that are vertically integrated into and primarily support our Electric Utilities. ~~Nearly all~~All of these operations are located at our electric generating complexes and are physically integrated into our Electric Utilities’ operations.

As of December 31,
Retail Customers 2021 2020 2019
Residential 186,852 184,872 183,232
Commercial 30,326 30,225 29,921
Industrial 81 83 83
Other 1,010 1,017 1,024
Total Electric Retail Customers at End of Year 218,269 216,197 214,260

As of December 31,
Retail Customers 2021 2020 2019
Colorado Electric 99,709 98,735 97,890
South Dakota Electric 74,509 73,700 73,052
Wyoming Electric 44,051 43,762 43,318
Total Electric Retail Customers at End of Year 218,269 216,197 214,260


	As of December 31,
Retail Customers	2023		2022		2021
Residential		190,776		188,921		186,852
Commercial		30,491		30,404		30,326
Industrial		84		82		81
Other		989		1,024		1,010
Total Electric Retail Customers at End of Year		222,340		220,431		218,269

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	As of December 31,
Retail Customers	2023		2022		2021
Colorado Electric		100,907		100,573		99,709
South Dakota Electric		76,479		75,169		74,509
Wyoming Electric		44,954		44,689		44,051
Total Electric Retail Customers at End of Year		222,340		220,431		218,269

Capacity and Demand. System Peak Demand for the Electric Utilities’ retail customers for each of the last three years are listed below:

System Peak Demand (in MW)
2021 2020 2019
Summer Winter Summer Winter Summer Winter
Colorado Electric 407 279 401 297 422 297
South Dakota Electric 397 299 378 304 335 320
Wyoming Electric 274 246 271 246 265 247

(a)

In 2023, Wyoming Electric set new summer and winter peak loads. See recent peak discussion in the Recent Developments section of Management’s Discussion and Analysis of Financial Condition and Results of Operations in Item 7 in this Annual Report on Form 10-K for additional information.

Unit Fuel
Type Location
Ownership
Interest % (d)
Owned Nameplate Capacity (MW) In Service Date
Colorado Electric:
Busch Ranch I (a)
Wind Pueblo, Colorado 50% 14.5 2012
Peak View (b)
Wind Pueblo, Colorado 100% 60.8 2016
Pueblo Airport Generation #1-2 Gas Pueblo, Colorado 100% 200.0 2011
Pueblo Airport Generation CT #6 Gas Pueblo, Colorado 100% 40.0 2016
AIP Diesel Oil Pueblo, Colorado 100% 10.0 2001
Diesel #1 and #3-5 Oil Pueblo, Colorado 100% 8.0 1964
Diesel #1-5 Oil Rocky Ford, Colorado 100% 10.0 1964
South Dakota Electric:
Cheyenne Prairie Gas Cheyenne, Wyoming 58% 58.0 2014
Corriedale (c)
Wind Cheyenne, Wyoming 62% 32.5 2020
Wygen III Coal Gillette, Wyoming 52% 60.3 2010
Neil Simpson II Coal Gillette, Wyoming 100% 90.0 1995
Wyodak Plant Coal Gillette, Wyoming 20% 80.5 1978
Neil Simpson CT Gas Gillette, Wyoming 100% 40.0 2000
Lange CT Gas Rapid City, South Dakota 100% 40.0 2002
Ben French Diesel #1-5 Oil Rapid City, South Dakota 100% 10.0 1965
Ben French CTs #1-4 Gas/Oil Rapid City, South Dakota 100% 100.0 1977-1979
Wyoming Electric:
Cheyenne Prairie Gas Cheyenne, Wyoming 42% 42.0 2014
Cheyenne Prairie CT Gas Cheyenne, Wyoming 100% 40.0 2014
Corriedale (c)
Wind Cheyenne, Wyoming 38% 20.0 2020
Wygen II Coal Gillette, Wyoming 100% 95.0 2008
Integrated Generation:
Wygen I Coal Gillette, Wyoming 76.5% 68.9 2003
Pueblo Airport Generation #4-5 Gas Pueblo, Colorado
50.1% (e)
200.0 2012
Busch Ranch I (a)
Wind Pueblo, Colorado 50% 14.5 2012
Busch Ranch II (c)
Wind Pueblo, Colorado 100% 59.4 2019
Top of Iowa (c)
Wind Joice, Iowa 100% 87.1 2019
Total MW Capacity 1,481.5

~~____________________~~

~~(a)~~ In 2013, Busch Ranch I was awarded a one-time cash grant in lieu of ITCs under the Section 1603 program created under the American Recovery and Reinvestment Act.

(b) ~~The Peak View facility qualifies for PTCs at $25/MWh under IRC 45 during the 10-year period beginning November 2016.~~

The PTCs for ~~this facility~~Peak View flow back to customers through a rider mechanism as a reduction to Colorado Electric’s margins.

(c)

This facility qualifies for PTCs at ~~$25/~~$28/MWh under IRC 45 during the 10-year period beginning on the date the facility was originally placed in service.

(d)

Jointly owned facilities are discussed in Note 6 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K.

(e)

In 2016, Black Hills Electric Generation sold a 49.9% non-controlling interest in Black Hills Colorado IPP to a third party. See Note 12 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K for additional information.

Our Electric Utilities’ power supply by resource as a percent of the total power supply for our energy needs for the years ended December 31 was as follows:


Power Supply	2023			2022			2021
Coal		35.0	%		35.1	%		34.2	%
Natural Gas		26.4	%		18.8	%		24.4	%
Wind (a)		8.9	%		11.4	%		11.3	%
Total Generated (b)		70.3	%		65.3	%		69.9	%
Coal, Natural Gas, Diesel Oil and Other Market Purchases		24.1	%		29.6	%		25.1	%
Wind and Solar Purchases		5.6	%		5.1	%		5.0	%
Total Purchased		29.7	%		34.7	%		30.1	%
Total		100.0	%		100.0	%		100.0	%

____________________

(a)

Wind generation decreased due to the sale of Northern Iowa Windpower assets in March 2023.

Power Supply 2021 2020 2019
Coal 34.2 % 40.3 % 40.0 %
Natural Gas and Diesel Oil (a)
24.4 25.0 22.2
Wind 11.3 8.8 5.8
Total Generated 69.9 74.1 68.0
Coal, Natural Gas, Oil and Other Market Purchases 25.1 21.1 29.1
Wind Purchases 5.0 4.8 2.9
Total Purchased 30.1 25.9 32.0
Total 100.0 % 100.0 % 100.0 %

(b)

~~____________________~~

~~(a)~~ The ~~diesel-fueled~~diesel oil-fueled generating units are generally used as supplemental peaking units. Power generated from these units, as a percentage of total power supply, was 0.0%~~, 0.0% and 0.1%~~ for each of the years ~~ended December 31, 2021, 2020, and 2019, respectively.~~presented.

Fuel and Purchased Power (dollars per MWh) 2021 2020 2019
Coal $ 11.55 $ 11.38 $ 12.42
Natural Gas and Diesel Oil (a)
33.65 8.59 11.04
Total Generated Weighted Average Fuel Cost 17.40 9.09 12.48
Coal, Natural Gas, Oil and Other Market Purchases (a)
64.85 40.80 44.16
Wind Purchases 34.69 42.06 49.19
Total Purchased Power Weighted Average Cost 59.84 41.03 44.62
Total Weighted Average Fuel and Purchased Power Cost $ 30.17 $ 17.36 $ 22.76

~~____________________~~

(a) The 2021 increase in prices paid for fuel and purchased power was primarily driven by unforeseeable and unprecedented market prices for natural gas and electricity during Winter Storm Uri. See further information in the ~~Recent Development~~s

~~section of Management’s Discussion and Analysis of Financial Condition and Results of Operations in~~ ~~Item 7~~


Fuel and Purchased Power (dollars per MWh)	2023		2022		2021
Coal	$	13.40	$	12.76	$	11.55
Natural Gas		20.20		37.09		33.65
Total Generated Weighted Average Fuel Cost		14.27		17.57		17.40
Coal, Natural Gas, Diesel Oil and Other Market Purchases		55.61		66.35		64.85
Wind and Solar Purchases		34.99		33.78		34.69
Total Purchased Power Weighted Average Cost		51.68		61.56		59.84
Total Weighted Average Fuel and Purchased Power Cost	$	25.39	$	32.82	$	30.17

~~and~~

~~Note 2~~ ~~of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K.~~

~~Power Purchase and Power Sales Agreements.~~Purchased Power. We have executed various PPAs to support our Electric Utilities’ capacity and energy needs beyond our regulated power plants’ generation, which include long-term related party agreements with our non-regulated power generation businesses. ~~We also have various long-term PSAs. Key contracts are disclosed~~See additional information in Note 3 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K.

Coal Mining. We own and operate a single coal mine through our WRDC ~~subsidiary.~~subsidiary which is reported within our Electric Utilities segment. We surface mine, process and sell low-sulfur sub-bituminous coal at our mine located immediately adjacent to our Gillette ~~energy complex~~Energy Complex in the Powder River Basin in northeastern Wyoming, where our five coal-fired power plants are located. We produced approximately ~~3.5~~3.7 million tons of coal in ~~2021.~~2023.

The mine provides low-sulfur coal directly to these five power plants via a conveyor belt system, minimizing transportation costs. ~~On average, the~~The fuel can be delivered to ~~the~~our adjacent power plants at ~~less than $1.00 per MMBtu, providing~~ very cost competitive ~~fuel to our power plants~~prices (i.e., $1.14 per MMBtu for year ended December 31, 2023) when compared to alternatives. Nearly all of the mine’s production is sold to our on-site generation facilities under long-term supply contracts.

As of December 31, ~~2021,~~2023, we estimated our recoverable reserves to be approximately ~~178~~179 million tons, based on a life-of-mine engineering study utilizing currently available drilling data and geological information prepared by internal engineering ~~studies.~~analyses. The recoverable reserve life is equal to approximately 5148 years at the current production levels.

Transmission and Distribution. Through our Electric Utilities, we own electric transmission and distribution systems composed of high voltage lines (greater than 69 kV) and low voltage lines (69 kV or less). We also jointly operate an electric transmission system, referred to as the Common Use System, with Basin Electric Power Cooperative and Powder River Energy Corporation. Each participant in the Common Use System individually owns assets that are operated together for a single system. The Common Use System also provides transmission service to our Transmission Tie. South Dakota Electric owns 35% of the Transmission Tie. The Transmission Tie is further discussed in Note 6 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K.

At December 31, ~~2021,~~2023, our Electric Utilities owned the electric transmission and distribution lines shown below:

South Dakota Electric (b)

(a)

Electric transmission line miles include voltages of 69 kV and above.

(b)

South Dakota Electric transmission line miles include 43 miles within the Common Use System.

Material transmission services agreements are ~~disclosed~~included in our disclosures in Note 3 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K.

Seasonal Variations of Business. Our Electric Utilities are seasonal businesses and weather patterns may impact their operating ~~performance.~~results. Demand for electricity is sensitive to seasonal cooling, heating and industrial load requirements, as well as market price. In particular, cooling demand is often greater in the summer and heating demand inis often greater in the winter.

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Competition. We generally have limited competition for the retail generation and distribution of electricity in our service areas. Various legislative or regulatory restructuring and competitive initiatives have been discussed in several of the states in which our utilities operate. These initiatives would be aimed at increasing competition or providing for distributed generation. To date, these initiatives have not had a material impact on our utilities. In Colorado, our electric utility is subject to rules which may require competitive bidding for generation supply. Because of these rules, we face competition from other utilities and non-affiliated IPPs for the right to supply electric energy and capacity for Colorado Electric when resource plans require additional resources. Additionally, electrification initiatives in our service territories could increase demand for electricity and increase customer growth.

The independent power industry consists of many strong and capable competitors, some of which may have more extensive operations or greater financial resources than we possess. With respect to the merchant power sector, FERC has taken steps to increase access to the national transmission grid by utility and non-utility purchasers and sellers of electricity to foster competition within the wholesale electricity markets. Our non-regulated power generation businesses could face greater competition if utilities are permitted to robustly invest in power generation assets. Conversely, state ~~regulatory rules~~regulations requiring utilities to competitively bid generation resources may provide opportunity for IPPs in some regions. To date, these initiatives have not had a material impact on our non-regulated power generation businesses.

Our ~~strategy for our~~ mining business strategy is to sell nearly all of our production to on-site generation facilities under long-term supply contracts. Historically, any off-site sales have been to consumers within close proximity to the WRDC mine. Rail transport market opportunities for WRDC are limited due to the lower heating value (Btu) of the coal, combined with the fact that the WRDC mine is served by only one railroad, resulting in less competitive transportation rates. Additionally, coalWRDC. Coal competes with other energy sources, such as natural gas, nuclear, wind, solar and hydropower. Costs and other factors relating to these alternative fuels, such as safety, environmental and availability considerations affect the overall demand for coal as a fuel.

Operating Statistics. See a summary of key operating statistics in the Electric Utilities segment operating results within Management’s Discussion and Analysis of Financial Condition and Results of Operations in Item 7 of this Annual Report on Form 10-K.

Gas Utilities

We conduct natural gas utility operations through our Arkansas, Colorado, Iowa, Kansas, Nebraska and Wyoming subsidiaries. Our Gas Utilities transport and distribute natural gas through our distribution network to our retail customers. Additionally, we sell contractual pipeline capacity and gas commodities to other utilities and marketing companies, including our affiliates, on an as-available basis.

We also provide non-regulated services to our regulated customers. Black Hills Energy Services provides natural gas supply to approximately 53,000 retail distribution customers under the Choice Gas Program in Nebraska and Wyoming. Additionally, we provide services under the Service Guard Comfort Plan, Tech Services and HomeServe.


	As of December 31,
Retail Customers	2023		2022		2021
Residential		871,930		864,038		853,908
Commercial		84,917		85,203		84,234
Industrial		2,179		2,189		2,158
Transportation		157,367		155,685		153,929
Total Natural Gas Retail Customers at End of Year		1,116,393		1,107,115		1,094,229


	As of December 31,
Retail Customers	2023		2022		2021
Arkansas Gas		186,216		183,270		180,216
Colorado Gas		211,155		208,060		202,747
Iowa Gas		163,281		162,801		161,905
Kansas Gas		119,407		118,599		117,862
Nebraska Gas		302,167		301,007		298,832
Wyoming Gas		134,167		133,378		132,667
Total Natural Gas Retail Customers at End of Year		1,116,393		1,107,115		1,094,229

We procure natural gas for our distribution customers from a diverse mix of producers, processors and marketers and generally use hedging, physical fixed-price purchases and market-based price purchases to achieve dollar-cost averaging within our natural gas portfolio. The majority of our procured natural gas is transported in interstate pipelines under firm transportation service agreements.

In addition to company-owned regulated underground natural gas storage assets in Arkansas, Colorado and Wyoming, we also contract with third-party transportation providers for natural gas storage service to provide gas supply during the winter heating season and to meet peak day customer demand for natural gas.

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The following table summarizes certain information regarding our company-owned regulated underground gas storage facilities as of December 31, 2023:


	Working Capacity (Mcf)		Cushion Gas (Mcf)		Total Capacity (Mcf)		Maximum Daily Withdrawal Capability (Mcfd)
Arkansas Gas		8,442,700		13,149,040		21,591,740		196,000
Colorado Gas		2,360,895		6,165,315		8,526,210		30,000
Wyoming Gas		5,733,900		17,545,600		23,279,500		36,000
Total		16,537,495		36,859,955		53,397,450		262,000

The following table summarizes certain information regarding our system infrastructure as of December 31, 2023:


	Intrastate Gas Transmission Pipelines (in line miles)		Gas Distribution Mains (in line miles)		Gas Distribution Service Lines (in line miles)
Arkansas Gas		875		5,197		1,380
Colorado Gas		694		7,188		1,861
Iowa Gas		173		2,890		2,765
Kansas Gas		339		3,026		1,400
Nebraska Gas		1,315		8,611		2,845
Wyoming Gas		1,267		3,625		1,726
Total		4,663		30,537		11,977

Seasonal Variations of Business. Our Gas Utilities are seasonal businesses and weather patterns may impact their operating results. Demand for natural gas is sensitive to seasonal heating and industrial load requirements, as well as market price. In particular, demand is often greater in the winter months for heating. Natural gas is used primarily for residential and commercial heating, and demand for this product can depend heavily upon weather throughout our service territories. As a result, a significant amount of natural gas revenue is normally recognized in the heating season consisting of the first and fourth quarters. Demand for natural gas can also be impacted by summer temperatures and precipitation, which can affect demand for irrigation.

Competition. We generally have limited competition for the retail distribution of natural gas in our service areas. Various restructuring and competitive initiatives have been discussed in several of the states in which our utilities operate. These initiatives are aimed at increasing competition. Additionally, electrification initiatives in our service territories could negatively impact demand for natural gas and decrease future growth. To date, these initiatives have not had a material impact on our utilities. Although we face competition from independent marketers for the sale of natural gas to our industrial and commercial customers, in instances where independent marketers displace us as the seller of natural gas, we still collect fees for transporting the gas through our distribution network.

Operating statistics. See a summary of key operating statistics in the Gas Utilities segment operating results within Management’s Discussion and Analysis of Financial Condition and Results of Operations in Item 7 of this Annual Report on Form 10-K.

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Utility Regulation Characteristics

Our Utilities are subject to regulation by a number of federal, state and other organizations, including, but not limited to, the following:

•

State public utility commissions, which have jurisdiction over services and facilities, rates and charges, accounting, valuation of property, depreciation rates and various other matters;

•

the FERC, which oversees the acquisition and disposition of generation, transmission and other facilities, transmission of electricity and natural gas in interstate commerce, proposals to build and operate interstate natural gas pipelines and storage facilities, and wholesale purchases and sales of electric energy, among other things;

•

the NERC, which, through its regional entities, establishes and enforces mandatory reliability standards, subject to approval by the FERC, to ensure the reliability of the U.S. electric transmission and generation system and to prevent major system blackouts;

•

the EPA, which has the responsibility to maintain and enforce national standards under a variety of environmental laws, in some cases delegating authority to state agencies. The EPA also works with industries and all levels of government, including federal and state governments, in a wide variety of voluntary pollution prevention programs and energy conservation efforts;

•

the TSA, which regulates certain activities related to the safety and security of natural gas pipelines. In May and July 2021 the TSA issued security directives that included several new cybersecurity requirements for critical pipeline owners and operators; and

•

the PHMSA, which is responsible for administering the federal regulatory program to help ensure the safe transportation of natural gas, petroleum and other hazardous materials by pipelines, including pipelines associated with natural gas storage, and develops regulations and other approaches to risk management to help ensure safety in design, construction, testing, operation, maintenance and emergency response of pipeline facilities.

Rates and ~~Regulation.~~ Regulation

Our ~~Electric~~ Utilities are subject to the jurisdiction of the public ~~utilities~~utility commissions in the states where they operate and the FERC for certain assets and transactions. These commissions oversee services and facilities, rates and charges, accounting, valuation of property, depreciation rates and various other matters. Rate decisions are influenced by many factors, including the cost of providing service, capital expenditures, the prudence of costs we incur, views concerning appropriate rates of return, general economic conditions and the political environment. Certain commissions also have jurisdiction over the issuance of debt or securities and the creation of liens on property located in their states to secure bonds or other securities.

~~Table of Contents~~

~~The following table provides regulatory information for each of our Electric Utilities:~~

Subsidiary Jurisdic-tion Authorized Rate of Return on Equity Authorized Return on Rate Base Authorized Capital Structure Debt/Equity Authorized Rate Base (in millions) Effective Date Additional Regulatory Mechanisms Percentage of Power Marketing Profit Shared with Customers
Colorado Electric (a)
CO 9.37% 7.43% 48%/52% $539.6 1/2017 ECA, TCA, PCCA, EECR/DSM, RESA 90%
CO 9.37% 6.02% 67%/33% $57.9 1/2017 Clean Air Clean Jobs Act Adjustment Rider N/A
South Dakota Electric WY 9.90% 8.13% 47%/53% $46.8 10/2014 ECA 65%
SD Global Settlement 7.76% Global Settlement $543.9 10/2014 ECA, TFA, EIA 70%
FERC 10.80% 8.76% 43%/57%
$148.4 (b)
2/2009 FERC Transmission Tariff N/A
Wyoming Electric (a)
WY 9.90% 7.98% 46%/54% $376.8 10/2014 PCA, EECR/DSM, Rate Base Recovery on Acquisition Adjustment N/A

~~____________________~~

~~(a) For both Colorado Electric and Wyoming Electric, transmission investments are recovered through retail rates rather than FERC Transmission Tariffs.~~

(b) Includes $131.3 million in 2021 rate base for the 2021 Projected Common Use System formula rate that is updated annually and $17.1 million in rate base for the Transmission Tie that is based on the approved stated rate from 2005.

The regulatory provisions for recovering the costs ~~to supply electricity~~of service vary by ~~state. We~~jurisdiction. Our Utilities have cost ~~adjustment~~recovery mechanisms ~~for our Electric Utilities~~ that allow us to pass the prudently-incurred cost of natural gas, fuel and purchased power to customers. These mechanisms allow the utility operating in that state to collect or refund the difference between the cost of commodities and certain services embedded in our base rates and the actual cost of the commodities and certain services without filing a general rate review. In addition, some ~~states~~jurisdictions allow ~~for recovery of new~~us to recover certain costs or earn a return on capital ~~investment~~investments placed in service between base rate reviews through approved rider ~~tariffs.~~tariffs, such as energy efficiency plan costs and system safety and integrity investments. These tariffs allow the utility a return on the investment.

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Electric Utilities

The following table provides regulatory information for each of our Electric Utilities:


Subsidiary	Jurisdiction	Authorized Rate of Return on Equity	Authorized Return on Rate Base	Authorized Capital Structure Debt/Equity	Authorized Rate Base (in millions)	Effective Date	Additional Regulatory Mechanisms	Percentage of Power Marketing Profit Shared with Customers

Colorado Electric	CO	9.37%	7.43%	48%/52%	$653.7 (a)	1/2017	ECA, TCA, PCCA, EECR/DSM, RESA, TEPR, Energy Assistance Benefit Charge	90%
	CO	9.37%	6.02%	67%/33%	$57.9	1/2017	CACJA Adjustment Rider	N/A
	FERC	9.80%	6.45%	53%/47%	(a)	9/2022	FERC Transmission Tariff	N/A
South Dakota Electric	WY	9.90%	8.13%	47%/53%	$46.8	10/2014	ECA	65%
	SD	Global Settlement	7.76%	Global Settlement	$543.9	10/2014	ECA, TFA, EIA	70%
	FERC	10.80%	8.76%	43%/57%	$197.7 (b)	2/2009	FERC Transmission Tariff	N/A
Wyoming Electric (c)	WY	9.75%	7.48%	48%/52%	$551.2 (a)	3/2023	PCA, EECR/DSM, Rate Base Recovery on Acquisition Adjustment, TCAM	N/A
	FERC	9.90%	8.77%	44%/56%	(a)	1/2019	FERC Transmission Tariff	N/A

____________________

(a)

For both Wyoming Electric and Colorado Electric retail customers, transmission investments are recovered through retail rates rather than FERC Transmission Tariffs. Transmission investments are recovered from wholesale transmission customers under the FERC Formula Transmission rate. The rate base associated with FERC assets is not displayed separate from that collected through the state recovery mechanisms, to avoid double counting. The rate base amounts for Colorado Electric and Wyoming Electric include rate base recovered through base rates and the authorized regulatory mechanisms.

(b)

Includes $180.6 million in 2023 rate base for the 2023 Projected Common Use System formula rate that is updated annually and $17.1 million in rate base for the Transmission Tie that is based on the approved stated rate from 2005.

(c)

For additional information regarding recent rate review updates, see Note 2 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K.

~~A summary of~~

The following table summarizes the mechanisms we have in place ~~are shown in the table below:~~

for each of our Electric Utilities:

Cost Recovery Mechanisms

Electric Utility Jurisdiction

Environmental
Cost ~~Recovery Mechanisms~~

EECR/DSM

Transmission
Expense

Fuel
Cost

Transmission
Capital

Purchased
Power

RESA

~~Environmental Cost~~Colorado Electric (a)

~~Energy Efficiency~~

~~Transmission Expense~~☑

~~Fuel Cost~~☑

~~Transmission Capital~~☑

~~Purchased Power~~☑

~~RESA~~☑

☑

Colorado Electric (FERC) (a)

þ☑

South Dakota Electric (SD) ~~(a)~~(b)

þ☑

South Dakota Electric (WY) ~~(b)~~(c)

þ☑

South Dakota Electric (FERC)~~(c)~~

þ☑

Wyoming Electric(a)

þ☑

☑

þ☑

Wyoming Electric (FERC) (a)

☑

____________________

(a)

~~____________________~~

(b)

~~(a)~~ South Dakota Electric’s ~~Environmental Cost (EIA)~~EIA and ~~Transmission Capital (TFA)~~TFA tariffs were suspended for a six-year moratorium period effective July 1, 2017. On January 7, 2020, South Dakota Electric received approval from the SDPUC to extend the 6-year moratorium period by an additional 3 years whereby these recovery mechanisms will not be effective prior to July 1, 2026.

~~(b)~~ (c)

South Dakota Electric has WPSC authorization to accumulate certain ~~Energy Efficiency~~energy efficiency costs in a regulatory asset with determination of recovery to be made in the next rate review.

~~(c) South Dakota Electric has an approved FERC Transmission Tariff based on a formulaic approach that determines~~

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Gas Utilities

The following table provides regulatory information for each of our Gas Utilities:


Subsidiary	Jurisdiction	Authorized Rate of Return on Equity	Authorized Return on Rate Base	Authorized Capital Structure Debt/Equity	Authorized Rate Base (in millions)	Effective Date	Additional Regulatory Mechanisms
Arkansas Gas (a)	AR	9.60%	6.20% (b)	55%/45%	$674.6 (c)	10/2022	GCA, Safety and Integrity Rider, EECR, Weather Normalization Adjustment, Billing Determinant Adjustment
Colorado Gas (a)	CO	9.20%	6.56%	50%/50%	$303.2	1/2022	GCA, SSIR, DSM, Gas Price Risk Management Rider, Energy Assistance Benefit Charge
RMNG (a)	CO	9.50%-9.70%	6.93%	48%-50%/ 50%-52%	$209.3	7/2023	Liquids/Off-system/Market Center Services Revenue Sharing
Iowa Gas	IA	9.60%	6.75%	50%/50%	$300.9	1/2022	GCA, EECR, System Safety and Maintenance Adjustment Rider, Gas Supply Optimization revenue sharing
Kansas Gas	KS	Global Settlement	Global Settlement	Global Settlement	Global Settlement	1/2022	GCA, Weather Normalization Tariff, Gas System Reliability Surcharge, Ad Valorem Tax Surcharge, Cost of Bad Debt Collected through GCA, Pension Levelized Adjustment, Tax Adjustment Rider, Gas Supply Optimization revenue sharing
Nebraska Gas (d)	NE	9.50%	6.71%	50%/50%	$504.2 (e)	3/2021	GCA, Cost of Bad Debt Collected through GCA, Infrastructure System Replacement Cost Recovery Surcharge, Choice Gas Program, SSIR, Bad Debt expense recovered through Choice Supplier Fee, Line Locate Surcharge, HEAT Program
Wyoming Gas (a)(d)	WY	9.85%	7.33%	49%/51%	$450.8	1/2024	GCA, EECR, Rate Base Recovery on Acquisition Adjustment, Wyoming Integrity Rider, Choice Gas Program

____________________

(a)

Colorado Gas regulatory information presented above does not reflect the ~~revenue component of South Dakota Electric’s open access transmission tariff.~~

recent settlement agreement which is subject to CPUC approval. For additional information regarding recent rate review updates, see

~~Tariff Filings.~~ ~~See~~ Note 2 of the Notes to Consolidated Financial Statements in this Annual Report on Form ~~10-K for tariff filings and additional information regarding current electric regulatory activity.~~

~~Operating Statistics~~. ~~See a summary of key operating statistics in the~~ ~~Electric Utilities~~ ~~segment operating results within Management’s Discussion and Analysis of Financial Condition and Results of Operations in~~ ~~Item 7~~ ~~of this Annual Report on Form~~ 10-K.

~~Table of Contents~~

~~Gas Utilities~~

We conduct natural gas utility operations through our Arkansas, Colorado, Iowa, Kansas, Nebraska and Wyoming subsidiaries. Our Gas Utilities transport and distribute natural gas through our distribution network to approximately 1,094,000 customers. Additionally, we sell contractual pipeline capacity and gas commodities to other utilities and marketing companies, including our affiliates, on an as-available basis.

We also provide non-regulated services to our regulated customers. Black Hills Energy Services provides natural gas supply to approximately 52,400 retail distribution customers under the Choice Gas Program in Nebraska and Wyoming. Additionally, we provide services under the Service Guard Comfort Plan, Tech Services and HomeServe.

As of December 31,
Retail Customers 2021 2020 2019
Residential 853,908 844,999 831,351
Commercial 84,234 83,135 82,912
Industrial 2,158 2,235 2,208
Transportation 153,929 152,568 149,971
Total Natural Gas Retail Customers at End of Year 1,094,229 1,082,937 1,066,442

As of December 31,
Retail Customers 2021 2020 2019
Arkansas 180,216 178,281 174,447
Colorado 202,747 197,817 191,950
Iowa 161,905 160,952 159,641
Kansas 117,862 116,973 115,846
Nebraska 298,832 296,778 293,576
Wyoming 132,667 132,136 130,982
Total Natural Gas Retail Customers at End of Year 1,094,229 1,082,937 1,066,442

In addition to company-owned natural gas storage assets in Arkansas, Colorado and Wyoming, we also contract with third-party transportation providers for natural gas storage service to provide gas supply during the winter heating season and to meet peak day customer demand for natural gas.

~~The following table summarizes certain information regarding our company-owned regulated underground gas storage facilities as of December 31, 2021:~~

State Working Capacity (Mcf) Cushion Gas
(Mcf) Total Capacity (Mcf) Maximum Daily Withdrawal Capability (Mcfd)
Arkansas 9,273,700 12,318,040 21,591,740 196,000
Colorado 2,361,495 6,164,715 8,526,210 30,000
Wyoming 5,733,900 17,145,600 22,879,500 36,000
Total 17,369,095 35,628,355 52,997,450 262,000

~~Table of Contents~~

~~The following table summarizes certain information regarding our system infrastructure as of December 31, 2021:~~

State Intrastate Gas
Transmission Pipelines
(in line miles) Gas Distribution
Mains
(in line miles) Gas Distribution
Service Lines
(in line miles)
Arkansas 874 4,972 1,275
Colorado 693 6,990 2,303
Iowa 172 2,863 2,486
Kansas 330 2,980 1,374
Nebraska 1,311 8,443 2,773
Wyoming 1,352 3,532 1,653
Total 4,732 29,780 11,864

~~Seasonal Variations of Business.~~ Our Gas Utilities are seasonal businesses and weather patterns may impact their operating performance. Demand for natural gas is sensitive to seasonal heating and industrial load requirements, as well as market price. In particular, demand is often greater in the winter months for heating. Natural gas is used primarily for residential and commercial heating, and demand for this product can depend heavily upon weather throughout our service territories. As a result, a significant amount of natural gas revenue is normally recognized in the heating season consisting of the first and fourth quarters. Demand for natural gas can also be impacted by summer temperatures and precipitation, which can affect demand for irrigation.

~~Competition.~~ We generally have limited competition for the retail distribution of natural gas in our service areas. Various restructuring and competitive initiatives have been discussed in several of the states in which our utilities operate. These initiatives are aimed at increasing competition. Additionally, electrification initiatives in our service territories could negatively impact demand for natural gas and decrease customer growth. To date, these initiatives have not had a material impact on our utilities. Although we face competition from independent marketers for the sale of natural gas to our industrial and commercial customers, in instances where independent marketers displace us as the seller of natural gas, we still collect a charge for transporting the gas through our distribution network.

~~Rates and Regulation.~~ Our Gas Utilities are subject to the jurisdiction of the public utility commissions in the states where they operate. These commissions oversee services and facilities, rates and charges, accounting, valuation of property, depreciation rates and various other matters. The public utility commissions determine the rates we are allowed to charge for our utility services. Rate decisions are influenced by many factors, including the cost of providing service, capital expenditures, the prudence of costs we incur, views concerning appropriate rates of return, general economic conditions and the political environment. Certain commissions also have jurisdiction over the issuance of debt or securities and the creation of liens on property located in their states to secure bonds or other securities.

Our Gas Utilities are authorized to use natural gas cost recovery mechanisms allowing rate adjustments reflecting changes in the wholesale cost of natural gas and recovery of all the costs prudently incurred in purchasing gas for customers. In addition to natural gas cost recovery mechanisms, other recovery mechanisms, which vary by utility, allow us to recover certain costs or earn a return on capital investments, such as energy efficiency plan costs and system safety and integrity investments.

~~Table of Contents~~

~~The following table provides regulatory information for each of our natural gas utilities:~~(b)
Subsidiary Jurisdic-tion Authorized Rate of Return on Equity Authorized Return on Rate Base Authorized Capital Structure Debt/Equity Authorized Rate Base (in millions) Effective Date Additional Regulatory Mechanisms
Arkansas Gas (c)
AR 9.61%
6.82% (a)
51%/49%
$451.5 (b)
10/2018 GCA, Main Replacement Program, At-Risk Meter Relocation Program, Legislative or Regulatory Mandated Expenditures, EECR, Weather Normalization Adjustment, Billing Determinant Adjustment
Colorado Gas (c)
CO 9.20% 6.56% 50%/50% $303.2 1/2022 GCA, SSIR, EECR/DSM
RMNG CO 9.90% 6.71% 53%/ 47% $118.7 6/2018 SSIR, Liquids/Off-system/Market Center Services Revenue Sharing
Iowa Gas (c)
IA 9.60% 6.75% 50%/50% $300.9 1/2022 GCA, EECR, System Safety and Maintenance Adjustment Rider, Gas Supply Optimization revenue sharing
Kansas Gas (c)
KS Global Settlement Global Settlement Global Settlement Global Settlement 1/2022 GCA, Weather Normalization Tariff, Gas System Reliability Surcharge, Ad Valorem Tax Surcharge, Cost of Bad Debt Collected through GCA, Pension Levelized Adjustment, Tax Adjustment Rider, Gas Supply Optimization revenue sharing
Nebraska Gas (d)
NE 9.50% 6.71% 50%/50% $504.2 3/2021 GCA, Cost of Bad Debt Collected through GCA, Infrastructure System Replacement Cost Recovery Surcharge, Choice Gas Program, SSIR, Bad Debt expense recovered through Choice Supplier Fee, Line Locate Surcharge
Wyoming Gas (d)
WY 9.40% 6.98% 50%/50% $354.4 3/2020 GCA, EECR, Rate Base Recovery on Acquisition Adjustment, Wyoming Integrity Rider, Choice Gas Program
~~____________________~~

~~(a)~~ Arkansas Gas return on rate base is adjusted to remove certain liabilities from rate review capital structure for comparison with other subsidiaries.

~~(b)~~ (c)

Arkansas Gas rate base is adjusted to include certain liabilities for comparison with other subsidiaries.

~~(c) For additional information regarding recent rate review updates, see~~ (d)~~Note 2~~ ~~of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K.~~

~~(d)~~ The Choice Gas Program mechanisms are applicable to only a portion of Nebraska Gas and Wyoming Gas customers.

(e)

Excludes amounts to serve non-jurisdictional and agriculture customers.

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The following table summarizes the mechanisms we have in place for each of our Gas Utilities:


Gas Utility Jurisdiction	Cost Recovery Mechanisms
Gas Utility Jurisdiction	EECR/DSM	Integrity Additions	Bad Debt	Weather Normal	Pension Recovery	Gas Cost (a)	Revenue Decoupling
Arkansas Gas	☑	☑		☑		☑	☑
Colorado Gas	☑	☑				☑
RMNG
Iowa Gas	☑	☑				☑
Kansas Gas		☑	☑	☑	☑	☑
Nebraska Gas		☑	☑			☑
Wyoming Gas	☑	☑				☑

____________________

(a)

All of our Gas Utilities, except where the Choice Gas Program is the only option, have GCAs that allow us to pass the prudently-incurred cost of gas and certain services through to the customer between rate reviews. ~~Some of the mechanisms we have in place include the following:~~

~~Gas Utility Jurisdiction~~

~~Cost Recovery Mechanisms~~

~~DSM/Energy Efficiency~~

~~Integrity Additions~~

~~Bad Debt~~

~~Weather Normal~~

~~Pension Recovery~~

~~Gas Cost~~

~~Revenue Decoupling~~

~~Arkansas Gas~~

~~Colorado Gas~~

~~RMNG~~ ~~(a)~~

~~Iowa Gas~~

~~Kansas Gas~~

~~Nebraska Gas~~

~~Wyoming Gas~~

~~____________________~~

(a) RMNG, which is an intrastate transmission pipeline that provides natural gas transmission and wholesale services in western Colorado, has an SSIR recovery mechanism. The other cost recovery mechanisms are not applicable to RMNG.

Recent Tariff ~~Filings.~~ Filings

See Note 2 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K for information regarding current ~~natural gas~~ regulatory activity.

~~Operating statistics. See a summary of key operating statistics in the~~ ~~Gas Utilities~~

~~segment operating results within Management’s Discussion and Analysis of Financial Condition and Results of Operations in~~

~~Item 7~~FERC

~~of this Annual Report on Form 10-K.~~

~~Table of Contents~~

~~Utility Regulation Characteristics~~

~~Federal Regulation~~

~~Energy Policy Act.~~ The Energy Policy Act of 2005 included provisions to create an Electric Reliability Organization, which is required to promulgate mandatory reliability standards governing the operation of the bulk power system in the U.S. FERC certified NERC as the Electric Reliability Organization and also issued an initial order approving many reliability standards that went into effect in 2007. Entities that violate standards can be subject to fines and can also be assessed non-monetary penalties, depending upon the nature and severity of the violation.

~~Federal Power Act~~. The Federal Power Act gives FERC exclusive rate-making jurisdiction over wholesale sales of electricity and the transmission of electricity in interstate commerce. Pursuant to the Federal Power Act, all public utilities subject to FERC’s jurisdiction must maintain tariffs and rate schedules on file with FERC that govern the rates, and terms and conditions for the provision of FERC-jurisdictional wholesale power and transmission services. Public utilities are also subject to accounting, record-keeping and reporting requirements administered by FERC. FERC also places certain limitations on transactions between public utilities and their affiliates. Our ~~public Electric Utility~~electric utility subsidiaries provide FERC-jurisdictional services subject to FERC’s oversight.

Our Electric Utilities entities are authorized by FERC to make wholesale sales of electric capacity and energy at market-based rates under tariffs on file with FERC. As a condition of their market-based rate authority, Electric Quarterly Reports are filed with FERC. Our Electric Utilities own and operate FERC-jurisdictional interstate transmission facilities and provide open access transmission service under tariffs on file with FERC. Our Electric Utilities are subject to routine audit by FERC with respect to their compliance with FERC’s regulations.

~~PUHCA 2005~~. PUHCA 2005 provides FERC authority with respect to the books and records of a utility holding company. As a utility holding company whose assets consist primarily of investments in our subsidiaries, including subsidiaries that are public utilities and also a centralized service company subsidiary, BHSC, we are subject to FERC’s authority under PUHCA 2005.

PUHCA 2005 reiterated the definition and benefits of EWG status. Under PUHCA 2005, an EWG is an entity or generator engaged, directly or indirectly through one or more affiliates, exclusively in the business of owning, operating or both owning and operating all or part of one or more eligible facilities and selling electric energy at wholesale. Though EWGs are public utilities within the definition set forth in the Federal Power Act and are subject to FERC regulation of rates and charges, they are exempt from other FERC requirements. Through its subsidiaries, Black Hills Corporation is affiliated with ~~three~~two EWGs, Wygen I and Pueblo Airport Generation (facilities #4-5) ~~and Top~~. Both of ~~Iowa. Each of~~ these ~~three~~ EWGs have been granted market-based rate authority.

NERC

The Energy Policy Act of 2005 included provisions to create an Electric Reliability Organization, which is required to promulgate mandatory reliability standards governing the operation of the bulk power system in the U.S. FERC certified NERC as the Electric Reliability Organization and also issued an initial order approving many reliability standards that went into effect in 2007. Entities that violate standards can be subject to fines and can also be assessed non-monetary penalties, depending upon the nature and severity of the violation.

Pipeline Security

In May and July 2021, the TSA issued security directives in response to a ransomware attack on the Colonial Pipeline that occurred earlier in 2021 that included several new cybersecurity requirements for critical pipeline owners and operators. Among these requirements is the implementation of specific mitigation measures to protect against ransomware attacks and other known threats to information and operational technology systems; development and implementation of a cybersecurity contingency and recovery plan; and performance of a cybersecurity architecture design review. Compliance with these measures has not had a material impact on our operations. We continue to evaluate the potential effect of these directives on our operations and facilities and will continue to monitor for any clarifications or amendments to these directives.

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Gas Pipeline and Storage Integrity and Safety

We are subject to regulation by PHMSA, which requires the following for certain gas distribution and transmission pipelines and underground storage facilities: inspection and maintenance plans; integrity management programs, including the determination of pipeline integrity risks and periodic assessments on certain pipeline segments; an operator qualification program, which includes certain trainings; a public awareness program that provides certain information; and a control room management plan. If we fail to comply with applicable statutes and the PHMSA Office of Pipeline Safety’s rules and related regulations and orders, we could be subject to significant penalties and fines.

Environmental Matters

~~In November 2020, we announced~~We have clean energy goals to reduce GHG emissions that are based on prudent and proven solutions while minimizing cost impacts to and ensuring safety of our customers. See more information in Key Elements of our Business Strategy within Management’s Discussion and Analysis of Financial Condition and Results of Operations in Item 7 of this Annual Report on Form 10-K.

We are subject to significant state and federal environmental regulations that encourage the use of clean energy technologies and regulate emissions of GHGs. We have undertaken initiatives to meet current requirements and to prepare for anticipated future regulations, reduce GHG emissions, and respond to state renewable and energy efficiency goals. Compliance with future environmental regulations could result in substantial cost.

In July of 2019, the EPA adopted the Affordable Clean Energy rule, which requires states to develop plans by 2022 for GHG reductions from coal-fired power plants. ~~In a January 2021 decision,~~On May 23, 2023, the ~~U.S. Court of Appeals for the D. C. Circuit issued a decision vacating and remanding~~EPA proposed to repeal the Affordable Clean Energy ~~rule. That decision, if not successfully appealed~~rule and at the same time issued a replacement rule to establish emissions limits for GHG emissions from existing coal-fired and oil/gas-fired electric power generating boilers. The EPA also proposed GHG emission limits for existing stationary combustion turbines. The proposed emissions limitations are based upon the application of carbon capture controls or ~~reconsidered, would allow~~the use of hydrogen fuel beginning in 2030. The EPA is expected to issue a final rule in the first half of 2024. We will continue to monitor any related guidelines and rulemakings issued by the EPA ~~to proceed with alternate regulation of coal-fired power plants, either reviving the Clean Power Plan~~ or ~~proposing additional regulation. Compliance could result in significant investment.~~

state regulatory authorities.

In February 2022, the EPA proposed the Good Neighbor Rule Provisions, which are part of the CSAPR framework and is intended to address ozone transport for the 2015 ozone NAAQS. The proposed rule included the state of Wyoming and imposed a NOx emissions trading program on fossil fueled electricity generating plants within the state. The EPA’s consideration of revised NOx emissions inventories and revised ozone modeling resulted in Wyoming’s exclusion from the final Good Neighbor Rule published on June 5, 2023. In a subsequent action published on August 14, 2023, the EPA approved Wyoming’s State Implementation Plan submission addressing interstate transport for the 2015 8-hour ozone NAAQS, and Wyoming sources will not be subject to the CSAPR.

Environmental risk changes constantly with the implementation of new or modified regulations, changing stakeholder interests and needs, and through the introduction of innovative work practices and technologies. We continually assess risk and develop mitigation strategies to manage and ensure compliance across the enterprise successfully and responsibly. For additional information on environmental matters, see Item 1A and Note 3 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K.

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Human Capital Resources

Overview

~~Black Hills Corporation is~~We are committed to ~~supporting operational excellence by~~retaining, attracting ~~motivating, retaining~~ and ~~encouraging the development of~~cultivating a ~~highly qualified~~talented, engaged and ~~diverse employee~~thriving team. ~~Our employees’ drive~~By making our people and ~~dedication~~culture a strategic priority, our employees are engaged and empowered to ~~their work, and their commitment~~contribute to the ~~safety~~success of our customers and their fellow employees, allows Black Hills Corporation to successfully grow and manage our business year over year. The impacts of COVID-19 to our businesses and employees are discussed in the business.~~Recent Developments~~

~~within Management’s Discussion and Analysis of Financial Condition and Results of Operations in~~ ~~Item 7~~ ~~of this Annual Report on Form 10-K.~~

Our Team As of December 31, 2021 As of December 31, 2020
Total employees 2,884 3,011
Women in executive leadership positions (a)
30% 31%
Gender diversity (women as a % of total employees) 26% 26%
Represented by a union 25% 25%
Military veterans 14% 16%
Ethnic diversity (non-white employees as a % of total) 12% 11%
For the year ended December 31, 2021 For the year ended December 31, 2020
Number of external hires 214 299
External hires gender diversity (as a % of total external hires) 25% 29%
External hires ethnic diversity (as a % of total external hires) 20% 16%
Turnover rate (b)
11% 8%
Retirement rate 3% 3%


Our Team	As of December 31, 2023	As of December 31, 2022
Total employees	2,874	2,982
Women in executive leadership positions (a)	29%	33%
Gender diversity (women as a % of total employees)	24%	25%
Represented by a union	25%	25%
Military veterans	10%	11%
Ethnic diversity (non-white employees as a % of total)	15%	14%

	For the year ended December 31, 2023	For the year ended December 31, 2022
Number of external hires	293	487
External hires gender diversity (as a % of total external hires)	27%	30%
External hires ethnic diversity (as a % of total external hires)	24%	23%
Turnover rate (b)	12%	13%
Retirement rate	3%	3%

____________________

(a)

Executive leadership positions are defined as positions with Vice President, Senior Vice President or Chief in their title.

(b)

Includes voluntary and involuntary separations but excludes internships.

Total Employees


	Number of Employees
	As of December 31, ~~2021~~2023
Electric Utilities	~~420~~	425
Gas Utilities	~~1,191~~	1,198
Corporate and Other	~~1,273~~	1,251
Total	~~2,884~~	2,874

At December 31, ~~2021,~~2023, approximately ~~20%~~18% of our total employees and ~~22%~~20% of our Electric and Gas Utilities employees were eligible for retirement (age 55 with at least 5 years of service).

Collective Bargaining Agreements

At December 31, ~~2021,~~2023, certain employees of our Electric Utilities and Gas Utilities were covered by the collective bargaining agreements as shown in the table below. We have not experienced any labor stoppages in decades.

~~Table of Contents~~


Utility	Number of Employees		Union Affiliation	Expiration Date of Collective Bargaining Agreement
Colorado Electric	94	108	IBEW Local 667	April 15, ~~2023~~2027
South Dakota Electric	~~128~~	122	IBEW Local 1250	March 31, ~~2022~~2027
Wyoming Electric	25	29	IBEW Local 111	June 30, 2024
Total Electric Utilities	~~247~~	259

Iowa Gas	~~132~~	129	IBEW Local 204	January 31, 2026
Kansas Gas	16	15	Communications Workers of America, AFL-CIO Local 6407	December 31, 2024
Nebraska Gas		92	IBEW Local 244	March 13, ~~2022~~2025
Nebraska Gas	~~140~~	134	CWA Local 7476	October 30, ~~2023~~2026
Wyoming Gas	15	16	IBEW Local 111	June 30, 2024
Wyoming Gas	78	80	CWA Local 7476	October 30, ~~2023~~2026
Total Gas Utilities	~~473~~	466

Total	~~720~~	725

~~Attraction~~

~~Continuous attraction~~Table of qualified team members is critical to our ability to serve our 1.3 million customers safely and efficiently. We actively recruit qualified candidates and continuously evaluate our interviewing and hiring practices to ensure equitable pay and processes. Our attraction efforts include the use of multiple nation-wide job boards, local college and high school outreach programs, a robust college internship program and participation in national and local job fairs. We have targeted diversity initiatives specific to recruiting groups, such as women, minorities and veterans, to fulfill our vision of continuing to build a thriving workforce, which is best able to support our communities, our customers and our shareholders.Contents

Diversity, Equity & Inclusion

~~At Black Hills Corporation, we~~

We believe in the benefits of diversity, equity and ~~inclusion.~~inclusion can be powerful, and we are committed to building a workforce whose diversity is representative of the communities we serve. Our recruiting strategies support our efforts to attract qualified individuals with targeted efforts to reach underrepresented talent. Our internship program and our partnerships and participation in outreach programs with local schools and colleges attract students to careers in the energy industry. Our commitment to equitable and inclusive hiring practices, including diverse candidate slates and interview panels and pay equity reviews, further supports our vision of retaining, attracting and cultivating an engaged and thriving team driven by improving life with energy. We ~~believe that~~continuously evaluate our recruitment strategies to determine their effectiveness to attract and build a talented, diverse ~~workforce will assist us in executing our strategic business plans, including our growth strategy.~~workforce. Workforce diversity trends, ~~including diverse~~which include new hires, promotions and turnover, are monitored at regular ~~intervals.~~

intervals throughout the year.

Development and Retention

~~Retaining~~

Developing and ~~developing team members~~retaining talent is critical to our continued success. Our development and retention efforts include ~~competitive compensation programs, monitoring employee engagement,~~internal and external skills training, career development ~~resources for all employees~~programs, and ~~internal training programs.~~competitive compensation. Our compensation programs are designed to be strategically aligned, externally competitive, internally equitable, personally motivating, cost effective and legally compliant. We ~~continuously~~ monitor employee engagement through bi-annual engagement surveys and quarterly pulse surveys. Every leader is responsible for creating and implementing an action plan based on their team’s engagement survey results. Our career development ~~resources~~programs include management onboarding, leadership development programs, mentoring programs, individual development assessments, stretch opportunities, talent sharing and more. Internal training opportunities include corporate-wide ~~trainings~~ and specialized training opportunities for different job functions. Our Field Career Path Program (FCPP) promotes career growth for our frontline customer-facing employees through established standards of knowledge, skills, abilities and performance.

Employee Safety and Wellness

Safety is one of our company values, a top priority in all we do and deeply embedded in our culture. ~~We are committed to consistently outperforming utility industry averages in key safety metrics.~~ Meetings of three or more employees begin with a safety share, a practice which contributes to keeping safety top of mind. Since 2009, we have reduced workplace injuries by more than ~~75%~~64% and continue to see long-term, sustained improvements in our safety practices and performance.


	For the year ended December 31, ~~2021~~2023
Total Case Incident Rate (incidents per 200,000 hours worked)	~~1.06~~1.51
Preventable Motor Vehicle Incident Rate (vehicle accidents per 1 million miles driven)	~~1.81~~1.65
Proactive Safety ~~and Wellness Participation Rate~~Activities per Employee ~~(a)~~	~~71%~~4
% of injuries reported within 1 day	93.3%

~~____________________~~

~~(a) Measures the employee engagement rate in a fitness tracking system used for the Company’s well-being program.~~

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ITEM 1A.RISK FACTORS

The nature of our business subjects us to a number of uncertainties and risks. Risks that may adversely affect our business operations, financial condition, results of operations or cash flows are described below. These risk factors, along with other risk factors that we discuss in our periodic reports filed with the SEC should be considered for a better understanding of our Company.

STRATEGIC ~~RISKS~~

RISK

Our continued success is dependent on execution of our ~~strategic~~ business ~~plans~~plan and growth strategy, including our ~~growth strategy.~~

capital investment program.

Our continued success depends, in significant part, on our ability to execute our strategic business ~~plans, including~~plans. Our strategy is centered on four critical priorities: Growth—to grow strategically and achieve strong financial performance, Operational Excellence—delivering safe, reliable and cost-effective energy to meet our customers’ needs, Transformation—be a simple and connected company positioned for growth, ~~strategy. Our plans~~ and ~~strategy include building sustainable operations~~People & Culture—retain and supporting the Energy Transition; consistently outperforming utility industry averages in key safety metrics; modernizing utility infrastructure; transforming the customer experience; growing our electricattract a talented, engaged and ~~natural gas customer load; and pursuing operating efficiencies.~~thriving team. Our current plans and strategy may be negatively impacted by disruptive forces and innovations in the marketplace, workforce capabilities, changing political, business or regulatory conditions and technology advancements.

In addition, we have significant capital investment programs planned for the next five years that are key to our strategic business plans. The successful execution of our capital investment program depends on, or could be affected by, a variety of factors that include, but are not limited to: access to capital to fund projects, weather conditions, effective management of projects, availability of qualified construction personnel including contractors, changes in commodity and other prices, impacts of supply chain disruptions on availability and ~~inflationary~~ cost of materials, governmental approvals and permitting, regulatory cost recovery and return on investment.

An inability to successfully and timely adapt to changing conditions and execute our strategic plans could materially affect our financial operating results including earnings, cash flow and liquidity.

~~Customer growth and usage in our service territories may fluctuate with economic conditions, emerging technologies, political influences or responses to price increases.~~

Our financial operating results are impacted by energy demand in our service territories. Customer growth and usage may be impacted by a number of factors, including the voluntary reduction in consumption of electricity and natural gas by our customers in response to increases in prices and energy efficiency programs, electrification initiatives that could negatively impact the demand for natural gas, economic conditions impacting customers’ disposable income and the use of distributed generation resources or other emerging technologies. Continued technological improvements may make customer and third-party distributed generation and energy storage systems, including fuel cells, micro-turbines, wind turbines, solar cells and batteries, more cost effective and feasible for our customers. If more customers utilize their own generation, demand for energy from us could decline. Such developments could affect the price of energy and delivery of energy, require further improvements to our distribution systems to address changing load demands and could make portions of our electric system power supply and transmission and/or distribution facilities obsolete prior to the end of their useful lives. Each of these factors could materially affect our financial operating results including earnings, cash flow and liquidity.

REGULATORY, LEGISLATIVE AND LEGAL RISKS

We may be subject to future laws, regulations or actions associated with climate change, including those relating to fossil-fuel generation and GHG emissions, which could increase our operating costs or restrict our market opportunities.

We own and operate regulated and non-regulated electric power plants that burn fossil fuels (natural gas and coal) and a surface mine that extracts and sells coal. We also purchase, store and deliver natural gas to our customers. These business activities are subject to evolving public concern regarding fossil fuels, GHG emissions (such as carbon dioxide and methane) and their impact on the climate.

There is uncertainty surrounding climate regulation due to legal challenges to some current regulations and anticipated new federal and/or state climate legislation and regulation. New or more stringent regulations or other energy efficiency requirements could require us to incur significant additional costs relating to, among other things, the installation of additional emission control equipment, the acceleration of capital expenditures, the purchase of additional emissions allowances or offsets, the acquisition or development of additional energy supply from renewable resources, the closure or capacity reductions of coal-fired power generation facilities or conversion to natural gas, and potential increased production from our combined cycle natural gas-fired generating units. Additional rules and regulations associated with fossil fuels and GHG emissions could result in the impairment or retirement of some of our existing or future transmission, distribution, generation and natural gas storage facilities or our coal mine. Further, these rules could create the need to purchase or build clean-energy fuel sources to fulfill obligations to our customers. These actions could also result in increased operating costs which could adversely impact customers and our financial operating results including earnings, cash flow and liquidity. We cannot definitively estimate the effect of GHG legislation or regulation on our results of operations, financial condition or cash flows.

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Future GHG constraints designed to minimize emissions from natural gas could likewise result in increased costs and affect the demand for natural gas as well as the prices charged to customers and the competitive position of natural gas among fuel alternatives. Certain cities in our operational footprint are focused on electrification and are considering initiatives that may restrict the direct use of natural gas in homes and businesses. Any such initiatives and legislation could have a negative impact on our results of operations, financial condition and cash flows.

We may be subject to unfavorable or untimely federal and state regulatory outcomes.

Our regulated ~~Electric and Gas~~ Utilities are subject to cost-of-service/rate-of-return regulation and earnings oversight from federal and eight state utility commissions. This regulatory treatment does not provide any assurance as to achievement of desired earnings levels. Our customer rates are regulated based on an analysis of our costs and investments, as reviewed and approved in regulatory proceedings. While rate regulation is premised on the full recovery of prudently incurred costs and a reasonable rate of return on invested capital, there can be no assurance that our various regulatory authorities will judge all of our costs to have been prudently incurred or that the regulatory process in which rates are determined will result in full or timely recovery of our costs with a reasonable return on invested capital. In addition, adverse rate decisions, including rate moratoriums, rate refunds, limits on rate increases, lower allowed returns on investments or rate reductions, could be influenced by competitive, economic, political, legislative, public perception and regulatory pressures and adversely impact ~~results of operations, financial condition~~earnings, cash flow and ~~cash flows.~~

liquidity.

Each of our ~~Electric and Gas~~ Utilities are permitted to recover certain costs (such as increased fuel and purchased power costs, including ~~incremental~~ costs from ~~Winter Storm Uri,~~certain severe weather events, or integrity capital investments) outside of a base rate review in order to stabilize customer rates and reduce regulatory lag. If regulators decide to discontinue these tariff-based recovery mechanisms, it could negatively impact ~~results of operations, financial condition~~earnings, cash flow and ~~cash flows.~~

liquidity.

Costs could significantly increase to achieve or maintain compliance with existing or future environmental laws, regulations or ~~requirements.~~

requirements including those associated with climate change.

Our business segments are subject to numerous environmental laws and regulations affecting many aspects of present and future operations, including air emissions (i.e., SO2, NOx, volatile organic compounds, particulate matter and GHG), water quality, wastewater discharges, solid waste and hazardous waste.

These laws and regulations may result in increased capital, operating and other costs. These laws and regulations generally require the business segments to obtain and comply with a wide variety of environmental licenses, permits, inspections and other government approvals. Compliance with environmental laws and regulations may require significant expenditures, including expenditures for cleanup costs and damages arising from contaminated properties. Failure or inability to comply with evolving environmental regulations may result in the imposition of fines, penalties and injunctive measures affecting operating assets.

Our business segments may not be successful in recovering increased capital and operating costs incurred to comply with new environmental regulations through existing regulatory rate structures and contracts with customers. More stringent environmental laws or regulations could result in additional costs of operation for existing facilities or impede the development of new facilities. ~~Although it~~

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There is ~~not expected that~~significant uncertainty regarding if and when new climate legislation, regulations or administrative policies will be adopted to reduce or limit GHG and the impact any such regulations would have on us. New or more stringent regulations or other energy efficiency requirements could require us to incur significant additional costs relating to, ~~comply~~among other things, the installation of additional emission control equipment, the acceleration of capital expenditures, the purchase of additional emissions allowances or offsets, the acquisition or development of additional energy supply from renewable resources, the closure or capacity reductions of coal-fired power generation facilities or conversion to alternative fuels, and potential increased production from our combined cycle natural gas-fired generating units. Additional rules and regulations associated with ~~current environmental regulations will have a material adverse~~fossil fuels and GHG emissions could result in the impairment or retirement of some of our existing or future transmission, distribution, generation and natural gas storage facilities or our coal mine. Further, these rules could create the need to purchase or build clean-energy fuel sources to fulfill obligations to our customers. These actions could also result in increased operating costs which could adversely impact customers and our financial operating results including earnings, cash flow and liquidity. We cannot definitively estimate the effect of GHG legislation or regulation on our ~~business segments’ financial position, results of operations or~~earnings, cash ~~flows, future environmental compliance costs could have a significant negative impact.~~

flow and liquidity.

Legislative and regulatory requirements may result in compliance penalties.

Business activities in the energy sector are heavily regulated, primarily by agencies of the federal government. Many agencies employ mandatory civil penalty structures for regulatory violations. The FERC, NERC, PHMSA, CFTC, EPA, OSHA, SEC, TSA and MSHA may impose significant civil and criminal penalties to enforce compliance requirements relative to our business, which could have a material adverse effect on our financial operating results including earnings, cash flow and liquidity.

Municipal governments may seek to limit or deny our franchise privileges.

Municipal governments within our utility service territories possess the power of condemnation and could establish a municipal utility within a portion of our current service territories by limiting or denying franchise privileges for our operations and exercising powers of condemnation over all or part of our utility assets within municipal boundaries. We regularly engage in negotiations on renewals of franchise agreements with our municipal governments. We have from time to time faced challenges or ballot initiatives on franchise renewals. To date, we have been successful in resolving or defending ~~each~~most of these challenges. Although condemnation is a process that is subject to constitutional protections requiring just and fair compensation, as with any judicial procedure, the outcome is uncertain. If a municipality sought to pursue this course of action, we cannot assure that we would secure adequate recovery of our investment in assets subject to condemnation. We also cannot quantify the impact that such action would have on the remainder of our business operations.

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Changes in Federal tax law may significantly impact our business.

We are subject to taxation by the various taxing authorities at the federal, state and local levels where we operate. ~~Similar to the TCJA, sweeping~~Sweeping legislation or regulation could be enacted by any of these governmental authorities which may affect our tax burden. Changes may include numerous provisions that affect businesses, including changes to corporate tax rates, business-related exclusions, and deductions and credits. The outcome of regulatory proceedings regarding the extent to which a change in corporate tax rate will affect our utility customers and the time period over which that change will occur could significantly impact future earnings and cash flows. Separately, a challenge by a taxing authority, changes in taxing authorities’ administrative interpretations, decisions, policies and positions, our ability to utilize tax benefits such as carryforwards or tax credits, or a deviation from other tax-related assumptions may cause actual financial results to deviate from previous estimates.

OPERATING RISKS

Failure to attract and retain an appropriately qualified workforce could have a negative impact on our operations and long-term business strategy.

Recent trends, such as a competitive and tight labor market and an aging workforce may lead to higher costs and increased risk of negative outcomes for safety, compliance, customer service, and operations. Our ability to transition and replace our retirement-eligible utility employees is a risk; at December 31, 2023, approximately 18% of our employees were eligible for retirement. Our ability to avoid or minimize work stoppages and labor disputes is also a risk with approximately 25% of our employees represented by unions. Failure to hire and retain qualified employees, including the ability to transfer significant internal historical knowledge and expertise to new employees, may adversely affect our ability to manage and operate our business. If we are unable to successfully attract and retain an appropriately qualified workforce and maintain satisfactory collective bargaining agreements, safety, service reliability, customer satisfaction and our results of operations could be adversely affected. As part of our strategic business plans, we will need to attract and retain personnel who are qualified to implement our strategy and may need to retrain or re-skill certain employees to support our long-term objectives.

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Supply chain challenges could negatively impact our operations.

We rely on various suppliers in our supply chain for the materials necessary to execute on our capital investment program that is key to our strategic business plans and to respond to a significant unplanned event such as a natural disaster. Our largest customers also rely on our supply chain and delays in critical materials could impact their ability to operate and grow as planned. Our supply chain, material costs, and capital investment program may be negatively impacted by:

•

Unanticipated price increases due to recent macroeconomic factors, such as inflation, including wage inflation, or rising demand for raw materials associated with the Energy Transition; and

•

Supply restrictions beyond our control or the control of our suppliers such as disruption of the freight system (e.g. labor union strikes), increased environmental threats from weather-related disasters, rising demand for raw materials associated with the Energy Transition and/or geopolitical unrest (e.g. Russia-Ukraine and Middle East conflicts).

~~OPERATING RISKS~~

An inability to successfully manage challenges in our supply chain network could materially affect our ability to execute our business plan and growth strategy and our financial operating results including earnings, cash flow and liquidity.

Our financial performance depends on the successful operation of electric generating facilities, electric and natural gas transmission and distribution systems, natural gas storage facilities and a coal mine.

The risks associated with managing these operations include:

•

Operating hazards. Operating hazards such as leaks, mechanical problems and accidents, including fires or explosions, could impact employee and public safety, reliability and customer confidence;

•

Inherent dangers. Electricity and natural gas can be dangerous to employees and the general public. Failures of or contact with power lines, natural gas pipelines or service facilities and equipment may result in fires, explosions, property damage and personal injuries, including death. While we maintain liability and property insurance coverage, such policies are subject to certain limits and deductibles. The occurrence of any of these events may not be fully covered by our insurance;

•

Weather, natural conditions and disasters including impacts from climate change. Severe weather events, such as snow and ice storms (e.g., Winter Storm Uri), fires, tornadoes, strong winds, significant thunderstorms, flooding and drought, could negatively impact operations, including our ability to provide energy safely, reliably and profitably and our ability to complete construction, expansion or refurbishment of facilities as planned. Climate change ~~may intensify these events or increase the frequency of occurrence;~~(discussed below);

•

Acts of sabotage, terrorism or other malicious physical attacks. Damage to our facilities due to deliberate acts could lead to outages or other adverse effects;

•~~Operating hazards. Operating hazards such as leaks, mechanical problems and accidents, including fires or explosions, could impact employee and public safety, reliability and customer confidence;~~

•Equipment and processes. Breakdown or failure of equipment or processes, unavailability or increased cost of equipment, and performance below expected levels of output or efficiency could negatively impact our results of operations;

•

Disrupted transmission and distribution. We depend on transmission and distribution facilities, including those operated by unaffiliated parties, to deliver the electricity and natural gas that we sell to our retail and wholesale customers. If transmission is interrupted physically, mechanically or with cyber means, our ability to sell or deliver utility services and satisfy our contractual obligations may be hindered;

•

Natural gas supply for generation and distribution. Our regulated ~~utilities~~Utilities and non-regulated entities purchase natural gas from a number of suppliers for our generating facilities and for distribution to our customers. Our results of operations could be negatively impacted by the lack of availability and cost of natural gas, and disruptions in the delivery of natural gas due to various factors, including but not limited to, transportation delays, labor relations, weather, sabotage, cyber-attacks and environmental regulations;

•

Replacement power. The cost of supplying or securing replacement power during scheduled and unscheduled outages of generation facilities could negatively impact our results of operations;

•

Governmental permits. The inability to obtain required governmental permits and approvals along with the cost of complying with or satisfying conditions imposed upon such approvals could negatively impact our ability to operate

and our results of operations;

•

Operational limitations. Operational limitations imposed by environmental and other regulatory requirements and contractual agreements, including those that restrict the timing of generation plant scheduled outages, could negatively impact our results of operations;

•

Increased costs. Increased capital and operating costs to comply with increasingly stringent laws and regulations, unexpected engineering, environmental and geological problems, and unanticipated cost overruns could negatively impact our results of operations;

•

23Supply chain challenges (discussed above);

•

Workforce capabilities and labor relations (discussed above); and

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•Supply chain disruptions. We rely on various suppliers in our supply chain for the materials necessary to execute on our capital investment program. Our supply chain, material costs, and capital investment program may be negatively impacted by unanticipated price increases due to factors exacerbated by the COVID-19 pandemic, such as inflation, including wage inflation, or due to supply restrictions beyond our control or the control of our suppliers;

•Labor and labor relations. The cost of recruiting and retaining skilled technical labor or the unavailability of such resources could have a negative impact on our operations. There is competition and a tightening market for skilled employees. During the COVID-19 pandemic and subsequent recovery, there is a national trend of increased employee turnover. Our ability to transition and replace our retirement-eligible utility employees is a risk; at December 31, 2021, approximately 22% of our Electric Utilities and Gas Utilities employees were eligible for retirement. Our ability to avoid or minimize supply interruptions, work stoppages and labor disputes is also a risk with approximately 25% of our employees are represented by unions; and

•Public opposition. Opposition by members of public or special-interest groups could negatively impact our ability to operate our businesses.

~~The ongoing operation of our business involves the risks described above, in addition to risks associated with threats to our overall business model, such as electrification initiatives.~~ Any of these risks described above could ~~cause us to experience negative financial results and~~ damage to our reputation and public confidence. These risks could also cause us to incur significant costs or be unable to deliver energy and/or operate below expected capacity levels, which in turn could reduce revenues or cause us to incur higher operating and maintenance costs and penalties. While we maintain insurance, obtain warranties from vendors and obligate contractors to meet certain performance levels, the proceeds of such insurance and our rights under contracts, warranties or performance guarantees may not be timely or adequate to cover lost revenues, increased expenses, liability or liquidated damage payments.

~~Cyberattacks,~~

The nature of our business subjects us to climate-related risk, stemming from both physical risk and transition risk of climate change, over varying time horizons.

Physical risks of climate change refer to risks to our facilities or operations that may result from changes in the physical climate, such as changes to temperature and weather patterns. Our utility businesses are seasonal businesses and weather conditions and patterns can have a material impact on our operating results. To the extent weather conditions are affected by climate change, fluctuations in commodity prices and customers’ energy usage could be magnified. Climate change may lead to increased intensity and frequency of storms, resulting in increased likelihood of fire, wind and extreme temperature events. Severe weather events, such as snow and ice storms (e.g., Winter Storm Uri), fire, and strong winds could negatively impact our operations, including our ability to provide energy safely, reliably and profitably and our ability to complete construction, expansion or refurbishment of facilities as planned. Climate change may intensify these events or increase the frequency of their occurrence. Over time, we may need to make additional investments to protect our facilities from physical risks of climate change.

Transition risks of climate change include changes to the energy systems as a result of new technologies, changing customer demand and/or expectations and voluntary GHG reduction goals, as well as local, state or federal regulatory requirements (discussed above). Policies such as a carbon or methane tax could increase costs associated with fossil fuel usage, resulting in higher operating costs including costs of energy generation, construction, and transportation. Risks of the transition to a low-carbon economy could result in shrinking customer demand for fossil fuel-based energy sources. This could come from increased use of behind the meter technology, such as residential solar and storage. Risk of investor pressure over climate risk and/or ESG standards, activist campaigns against coal producers, employee preferences to work for companies with certain sustainability goals and consumers preference for renewable energy could impact our reputation, ability to attract and retain an appropriately trained workforce, and overall access to capital and/or adequate insurance policies.

Cybersecurity incidents, terrorism, or other malicious acts targeting our key technology systems could disrupt our operations or lead to a loss or misuse of confidential and proprietary information.

To effectively operate our business, we rely upon a sophisticated electronic control system, information and operation technology systems and network infrastructure to generate, distribute and deliver energy, and collect and retain sensitive information including personal information about our customers and employees. ~~Cyberattacks,~~Cybersecurity incidents, terrorism or other malicious acts targeting electronic control systems could result in a full or partial disruption of our electric and/or natural gas operations. Attacks targeting other key technology systems, including our third-party vendors’ information systems, could further add to a full or partial disruption of our operations. The utility industry has been the target of several cyberattacks on operational systems and has seen an increased volume and sophistication of cybersecurity incidents from international activist organizations, other nation state actors and individuals. To date, we have not experienced a cybersecurity incident that has had a material impact on our business or results of operations. Any disruption of ~~these~~our electric and/or natural gas operations could result in a loss of service to customers and associated revenues, as well as significant expense to repair damages and remedy security breaches. In addition, any theft, loss and/or fraudulent use of customer, shareowner, employee or proprietary data could subject us to significant litigation, liability and costs, as well as adversely impact our reputation with customers and regulators, among others. We maintain cyber risk insurance to mitigate a portion, but not all, orof these risks and losses.

~~In May and July~~

As discussed in Utility Regulation Characteristics above, in 2021 the TSA issued security directives that included several new cybersecurity requirements for critical pipeline owners and operators. ~~Among these~~Such directives or other requirements ~~is the implementation~~may require expenditure of ~~specific mitigation~~significant additional resources to respond to cybersecurity incidents, to continue to modify or enhance protective measures, or to ~~protect against ransomware attacks~~assess, investigate and ~~other known threats~~remediate any critical infrastructure security vulnerabilities. Any failure to ~~information and operational technology systems; development and implementation of~~comply with such government regulations or failure in our cybersecurity protective measures may result in enforcement actions that may have a ~~cybersecurity contingency and recovery plan; and performance of a cybersecurity architecture design review. We are currently implementing several of these directives and evaluating the potential~~material adverse effect ~~of several others~~ on our business, results of operations and ~~facilities, as well as the potential cost of implementation, and~~financial condition. In addition, there is no certainty that costs incurred related to securing against threats will ~~continue to monitor for any clarifications or amendments to these directives.~~

be recovered through rates.

As discussed in Item 1C in this Annual Report on Form 10-K, we have instituted security measures and safeguards to protect our operational systems and information technology assets against cybersecurity threats, including certain safeguards required by ~~FERC.~~NERC. Despite our implementation of security measures and safeguards, all of our technology systems may still be vulnerable to disability, failures or unauthorized access.

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~~Weather~~

Our operations are subject to various conditions ~~including the impacts of climate change, may cause fluctuation~~that can result in fluctuations in customer ~~usage.~~usage, including customer growth and general economic conditions in our service territories, weather conditions, and responses to price increases and technological improvements.

Our results of operations and cash flows are affected by the demand for electricity and natural gas, which can vary greatly based upon:

•

Fluctuations in customer growth and general economic conditions in our service territories. Customer growth and energy use can be negatively impacted by population declines as well as adverse economic factors in our service territories, including recession, inflation, workforce reductions, stagnant wage growth, changing levels of support from state and local government for economic development, business closings, and reductions in the level of business investment. Our Utilities are impacted by economic cycles and the competitiveness of the commercial and industrial customers we serve. Any economic downturn, inflation, disruption of financial markets, or reduced incentives by state government for economic development could adversely affect the financial condition of our customers and demand for their products or services. These risks could directly influence the demand for electricity and natural gas as well as the need for additional power generation and generating facilities. We could also be exposed to greater risks of accounts receivable write-offs if customers are unable to pay their bills.

•

Weather conditions. Our ~~utility businesses~~Utilities are seasonal businesses and weather conditions and patterns can have a material impact on our operating performance. ~~To the extent weather conditions are affected by climate change, customers’ energy use could increase or decrease.~~ Demand for electricity is typically greater in the summer and winter months associated with cooling and heating, respectively. Demand for natural gas depends heavily upon winter-weather patterns throughout our service territory and a significant amount of natural gas revenues are recognized in the first and fourth quarters related to the heating season. Accordingly, our ~~utility operations~~Utilities have historically generated lower revenues, income and ~~income~~cash flows when weather conditions are cooler than normal in the summer and warmer than normal in the winter. Demand for natural gas is also impacted by summer weather patterns that are cooler than normal and provide higher than normal precipitation; both of which can reduce natural gas demand for irrigation. Unusually mild summers and winters, therefore, could have an adverse effect on our financial operating results, including earnings, cash flow and liquidity.

•

24Our customers' focus on energy conservation. Customer growth and usage may be impacted by the voluntary reduction in consumption of electricity and natural gas by our customers in response to increases in prices and energy efficiency programs, electrification initiatives that could negatively impact the demand for natural gas, economic conditions (i.e., inflation, recession) impacting customers’ disposable income and the use of distributed generation resources or other emerging technologies. Continued technological improvements may make customer and third-party distributed generation and energy storage systems, including fuel cells, micro-turbines, wind turbines, solar cells and batteries, more cost effective and feasible for our customers. If more customers utilize their own generation, demand for energy from us could decline. Such developments could affect the price and/or delivery of energy, require further improvements to our distribution systems to address changing load demands and could make portions of our electric system power supply and transmission and/or distribution facilities obsolete prior to the end of their useful lives.

Each of these factors described above could materially affect demand for electricity and natural gas which would impact our financial operating results including earnings, cash flow and liquidity.

If macroeconomic or other conditions adversely affect operations or require us to make changes to our strategic business plan, we may be forced to record a non-cash goodwill impairment charge.

We had approximately $1.3 billion of goodwill on our consolidated balance sheets as of December 31, 2023. If we make changes in our strategic business plan and growth strategy, or if macroeconomic or other conditions adversely affect operations in any of our businesses, we may be required to record a non-cash impairment charge. Goodwill is tested for impairment annually or whenever events or changes in circumstances indicate impairment may have occurred. If the testing performed indicates that impairment has occurred, we are required to record an impairment charge for the difference between the carrying value of the goodwill and the implied fair value of the goodwill in the period the determination is made. The testing of goodwill for impairment requires us to make significant estimates about our future performance and cash flows, as well as other assumptions. These estimates can be affected by numerous factors, including: future business operating performance, changes in macroeconomic conditions including recession, inflation and interest rates, changes in our regulatory environment, industry-specific market conditions, changes in business operations, changes in competition or changes in technologies. Any changes in key assumptions, or actual performance compared with key assumptions, about our business and its future prospects could affect the fair value of either or both of our operating segments, which may result in an impairment charge. See additional information in “Critical Accounting Estimates” under Item 7, Management’s Discussion and Analysis of Financial Condition and Results of Operations and Note 1of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K.

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FINANCIAL RISKS

A sub-investment grade credit rating could impact our ability to access capital markets.

Our senior unsecured debt rating is Baa2 (Stable outlook) by Moody’s; BBB+ (Stable outlook) by S&P; and BBB+ ~~(Stable~~(Negative outlook) by Fitch. Reduction of our investment grade credit ratings could impair our ability to refinance or repay our existing debt and complete new financings on reasonable ~~terms, if at all.~~terms. A credit rating downgrade, particularly to sub-investment grade, could also result in counterparties requiring us to post additional collateral under existing or new contracts. In addition, a ratings downgrade would increase our interest expense under some of our existing debt obligations, including borrowings under our credit facilities, potentially significantly increasing our cost of capital and other associated operating costs which may not be recoverable through existing regulatory rate structures and contracts with customers.

~~Our use of derivative financial instruments as hedges against commodity prices and financial market risks could result in material financial losses.~~

We use various financial and physical derivatives, including futures, forwards, options and swaps, to manage commodity price and interest rate risks. The timing of the recognition of gains or losses on these economic hedges in accordance with GAAP may not consistently match up with the gains or losses on the commodities being hedged. For Black Hills Energy Services under the Choice Gas Program, and in certain instances within our regulated Utilities where unrealized and realized gains and losses from derivative instruments are not approved for regulatory accounting treatment, fluctuating commodity prices may cause fluctuations in reported financial results due to mark-to-market accounting treatment.

To the extent that we hedge our commodity price and interest rate exposures, we forgo the benefits we would otherwise experience if commodity prices or interest rates were to change in our favor. In addition, even though they are closely monitored by management, our hedging activities can result in losses. Such losses could occur under various circumstances, including if a counterparty does not perform its obligations under the hedge arrangement, the hedge is economically imperfect, commodity prices or interest rates move unfavorably related to our physical or financial positions, or hedging policies and procedures are not followed.

Additionally, our exchange-traded futures contracts are subject to futures margin posting requirements. To the extent we are unable to meet these requirements, this could have a significant impact on our business by reducing our ability to execute derivative transactions to reduce commodity price uncertainty and to protect cash flows. Requirements to post collateral may cause significant liquidity issues by reducing our ability to use cash for investment or other corporate purposes, or may require us to increase our level of debt. Further, a requirement for our counterparties to post collateral could result in additional costs being passed on to us, thereby decreasing our profitability.

~~We have a holding company corporate structure with multiple subsidiaries. Corporate dividends and debt payments are dependent upon cash distributions to the holding company from the subsidiaries.~~

As a holding company, our investments in our subsidiaries are our primary assets. Our operating cash flow and ability to service our indebtedness depend on the operating cash flow of our subsidiaries and the payment of funds by them to us in the form of dividends or advances. Our subsidiaries are separate legal entities that have no obligation to make any funds available for that purpose, whether by dividends or otherwise. In addition, each subsidiary’s ability to pay dividends to us depends on any applicable contractual or regulatory restrictions that may include requirements to maintain minimum levels of cash, working capital, equity or debt service funds.

There is no assurance as to the amount, if any, of future dividends to the holding company because these subsidiaries depend on future earnings, capital requirements and financial conditions to fund such dividends. See “~~Liquidity and Capital Resources” within Management’s Discussion and Analysis of Financial Condition and Results of Operations in~~ ~~Item 7~~

~~and~~

~~Note 8~~ ~~of the Notes to Consolidated Financial Statements of this Annual Report on Form 10-K for further information regarding these restrictions and their impact on our liquidity.~~

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We may be unable to obtain financing on reasonable terms needed to refinance debt, fund planned capital expenditures or otherwise execute our operating strategy.

Our ability to execute our operating strategy is highly dependent upon our access to capital. Historically, we have addressed our liquidity needs (including funds required to make scheduled principal and interest payments, refinance debt, pay dividends and fund working capital and planned capital expenditures) with operating cash flow, borrowings under credit facilities, proceeds of debt and equity offerings and proceeds from asset sales. Our ability to access ~~the~~ capital markets and the costs and terms of available financing depend on many factors, including changes in our credit ratings, general macroeconomic conditions which may drive changes in interest rates and cause volatility in our stock price, changes in the federal or state regulatory environment affecting energy companies and volatility in commodity ~~or electricity prices and general economic and market conditions.~~

prices.

In addition, because we are a holding company and our utility assets are owned by our subsidiaries, if we are unable to adequately access the credit markets, we could be required to take additional measures designed to ensure that our utility subsidiaries are adequately capitalized to provide safe and reliable service. Possible additional measures would be evaluated in the context of then-prevailing market conditions, prudent financial management and any applicable regulatory requirements.

~~National and regional economic conditions may cause increased counterparty credit risk, late payments and uncollectible accounts.~~

A future recession or pandemic, if one occurs, may lead to an increase in late payments or non-payment from retail residential, commercial and industrial utility customers, as well as from our non-utility customers. If late payments and uncollectible accounts increase, earnings and cash flows from our continuing operations may be reduced.

~~We may be unable to obtain insurance coverage, and the coverage we currently have may not apply or may be insufficient to cover a significant loss.~~

Our ability to obtain insurance, as well as the cost of such insurance, could be impacted by developments affecting the insurance industry and the financial condition of insurers. Additionally, insurance providers could deny coverage or decline to extend coverage under the same or similar terms that are presently available to us. A loss for which we are not adequately insured could materially affect our financial results. The coverage we currently have in place may not apply to a particular loss, or it may not be sufficient to cover all liabilities to which the Company may be subject, including liability and losses associated with climate change, wildfire, natural gas and storage field explosions, cyber-security breaches, environmental hazards and natural disasters.

~~Market performance or changes in key valuation assumptions could require us to make significant unplanned contributions to our pension plan and other postretirement benefit plans.~~

Assumptions related to interest rates, expected return on investments, mortality and other key actuarial assumptions have a significant impact on our funding requirements and the expense recognized related to our pension and other postretirement benefit plans. An adverse change to key assumptions associated with our defined benefit retirement plans may require significant unplanned contributions to the plans which could adversely affect our financial operating results including earnings, cash flow and liquidity.

Costs associated with our healthcare plans and other benefits could increase significantly.

The costs of providing healthcare benefits to our employees and retirees have increased substantially in recent years. We believe that our employee benefit costs, including costs related to healthcare plans for our employees and former employees, will continue to rise. Significant regulatory developments have required, and likely will continue to require, changes to our current employee benefit plans and supporting administrative processes. Our electric and natural gas utility rates are regulated on a state-by-state basis by the relevant state regulatory authorities based on an analysis of our costs, as reviewed and approved in a regulatory proceeding. Within our utility rates, we have generally recovered the cost of providing employee benefits. As benefit costs continue to rise, however, there is no assurance that the utility commissions will allow recovery of these increased costs. The rising employee benefit costs, or inadequate recovery of such costs, may adversely affect our financial operating results including earnings, cash flow, orand liquidity.

~~PANDEMIC RISK~~

~~The ongoing COVID-19 pandemic, including its variants, or any other pandemic~~We may be unable to obtain insurance coverage, and the ~~associated impact on business~~coverage we currently have may not apply or may be insufficient to cover a significant loss.

Our ability to obtain insurance, as well as the cost of such insurance, could be impacted by developments affecting the insurance industry and ~~economic conditions~~the financial condition of insurers. Additionally, insurance providers could ~~negatively~~deny coverage or decline to extend coverage under the same or similar terms that are presently available to us. A loss for which we are not adequately insured could materially affect our ~~business operations, results~~financial results. The coverage we currently have in place may not apply to a particular loss, or it may not be sufficient to cover all liabilities to which we may be subject, including liability and losses associated with wildfires, natural gas and storage field explosions, cyber-security breaches, environmental hazards and natural disasters.

We have a holding company corporate structure with multiple subsidiaries. Corporate dividends and debt payments are dependent upon cash distributions to the holding company from the subsidiaries.

As a holding company, our investments in our subsidiaries are our primary assets. Our operating cash flow and ability to service our indebtedness depend on the operating cash flow of ~~operations,~~our subsidiaries and the payment of funds by them to us in the form of dividends or advances. Our subsidiaries are separate legal entities that have no obligation to make any funds available for that purpose, whether by dividends or otherwise. In addition, each subsidiary’s ability to pay dividends to us depends on any applicable contractual or regulatory restrictions that may include requirements to maintain minimum levels of cash, working capital, equity or debt service funds.

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There is no assurance as to the amount, if any, of future dividends to the holding company because these subsidiaries depend on future earnings, capital requirements and financial ~~condition~~conditions to fund such dividends. See “Liquidity and ~~cash flows.~~

Capital Resources

~~The scale~~” within Management’s Discussion and ~~scope~~Analysis of Financial Condition and Results of Operations in Item 7 and Note 8 of the ~~COVID-19 outbreak, the resulting pandemic or any other future pandemic,~~Notes to Consolidated Financial Statements of this Annual Report on Form 10-K for further information regarding these restrictions and ~~the associated impact on the economy and financial markets could adversely affect the Company’s business, results of operations and financial condition.~~ As a provider of essential services, the Company has an obligation to provide electric and natural gas services to our customers. The Company remains focused on protecting the health of our customers, employees and the communities in which we operate while assuring the continuity of our business operations.

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~~Although the impact of the COVID-19 pandemic and its variants to our 2021 results of operation was not significant, we cannot ultimately predict whether it will have a material~~their impact on our ~~future liquidity, financial condition~~liquidity.

Market performance or ~~results of operations. We also cannot predict~~changes in key valuation assumptions could require us to make significant unplanned contributions to our pension plan and other postretirement benefit plans.

Assumptions related to interest rates, expected return on investments, mortality and other key actuarial assumptions have a significant impact on our funding requirements and the ~~impact of COVID-19 on the health of~~expense recognized related to our ~~employees, our supply chain or our ability~~pension and other postretirement benefit plans. An adverse change to ~~mitigate higher costs~~key assumptions associated with ~~managing through~~our defined benefit retirement plans may require significant unplanned contributions to the ~~COVID-19 pandemic.~~

~~As recovery from the COVID-19 pandemic continues, additional uncertainties have emerged, including the impacts of:~~

•~~vaccine mandates and testing requirements on our workforce;~~

•~~inflation increasing prices of commodities and materials, outside services, employee costs and interest rates;~~

•~~supply chain disruptions on the availability and cost of materials; and~~

•~~labor shortages and increased turnover on costs of retaining and attracting employees.~~

~~The situation remains fluid and it is difficult to predict with certainty the potential impact of the COVID-19 pandemic, or any other future pandemic, on~~plans which could adversely affect our financial operating results including earnings, cash ~~flows~~flow and liquidity.

See
Note 13

of the Notes to Consolidated Financial Statements of this Annual Report on Form 10-K for further information

Our use of derivative financial instruments as hedges against commodity prices and financial market risks could result in material financial losses.

Additionally, our exchange-traded futures contracts are subject to futures margin posting requirements. To the extent we are unable to meet these requirements, this could have a significant impact on our business by reducing our ability to execute derivative transactions to reduce commodity price uncertainty and to protect cash flows. Requirements to post collateral may cause significant liquidity issues by reducing our ability to use cash for investment or other corporate purposes or may require us to increase our level of debt. Further, a requirement for our counterparties to post collateral could result in additional costs being passed on to us, thereby decreasing our profitability.

ITEM 1B.UNRESOLVED STAFF COMMENTS

None.

ITEM 1C. CYBERSECURITY

The utility industry has been the target of several cyberattacks on operational systems and has seen an increased volume and sophistication of cybersecurity incidents from international activist organizations, other nation state actors and individuals. We expect to continue to experience attempts to compromise our information technology and control systems, network infrastructure and other assets. To date, we have not experienced a cybersecurity incident that has had a material impact on our business or results of operations.

Risk Management and Strategy

Our enterprise risk management program, which includes cybersecurity risks that are identified through our cybersecurity risk management program, is designed to identify, report, and manage relevant material risks and opportunities.

Management of the identified risks is embedded into business processes and key decision making at every level of the Company. Our enterprise risk management team works closely with our Chief Security Officer ("CSO") and IT risk management team to evaluate and address material cybersecurity risks in alignment with our business strategy and operational needs.

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~~None.~~

We have a cybersecurity risk management program that is managed by a team of full-time cybersecurity professionals that utilizes a variety of tools and techniques to identify and assess material cybersecurity threats, their potential impact and opportunities for mitigation. The industry-standard security frameworks that we apply to our cyber environment include various security and risk assessments, such as internal threat assessments and internal control self-assessments. Because we are aware of the risks associated with third-party providers, we conduct third-party provider security assessments and benchmarking before engagement and maintain ongoing monitoring to ensure compliance with our cybersecurity standards. These assessments include evaluation of risk profiles through vendor questionnaires, review of System and Organization Controls attestation reports and monitoring on an ongoing basis by our IT risk management team. This approach is designed to mitigate risks related to data breaches or other security incidents originating from third-parties.

We regularly engage with third-party assessors and auditors as part of our ongoing cybersecurity risk assessment process to leverage specialized knowledge and insights and to identify areas for continued focus, improvement, compliance and effectiveness of mitigation. We also utilize government and industry-related security intelligence sources, and actively participate in industry peer groups and public-private partnerships to assist in the identification of potential threats. We conduct ongoing cybersecurity training and monthly email phishing drills for all employees.

We also have a cybersecurity incident response plan and procedures to manage cybersecurity incidents. These procedures include steps to identify, classify, communicate, contain, eradicate, and recover from a cybersecurity incident. These procedures also include notification to a cross-functional management team to assess incident materiality and an escalation process to members of our senior management team and our Board of Directors.

Governance

Our Board of Directors is responsible for the oversight of risks from cybersecurity threats. Our Chief Information Officer provides our Board of Directors quarterly reports that summarize material cybersecurity threats and the countermeasures taken to mitigate the associated risks. These reports address a variety of topics including updates on strategic cyber initiatives, industry trends, threat vulnerability assessments, and efforts to prevent, detect and respond to internal and external critical threats. From time to time, our Board of Directors also engages third-party consultants to provide further education about cybersecurity risks.

Our cybersecurity risk management program, which is discussed above, is led by our CSO, who has 28 years of prior work experience in various roles involving managing information security of large-scale global security operations, including developing cybersecurity strategy and implementing effective information and cybersecurity programs. Our CSO maintains industry certifications, including an ISC2 Certified Information Systems Security Professional certification.

Through oversight of the cybersecurity risk management program, our CSO is continually informed about the status of the program, including the effectiveness of the process and controls to monitor, prevent, detect, mitigate, and remediate cybersecurity incidents. The CSO is also made aware of the latest developments in cybersecurity, including potential threats and innovative risk management techniques. The CSO, in his capacity, regularly informs the Chief Information Officer and other members of our senior management team of all aspects related to cybersecurity risks and incidents.

ITEM 2. PROPERTIES

See Item 1 1 for a description of our principal business properties.

In addition to the properties disclosed in the Item 1, we own or lease several facilities throughout our service territories including a corporate headquarters building and various office, service center, storage, shop and warehouse space. Substantially all of the tangible utility properties of South Dakota Electric and Wyoming Electric are subject to liens securing first mortgage bonds issued by South Dakota Electric and Wyoming Electric, respectively.

ITEM 3.LEGAL PROCEEDINGS

Information regarding our legal proceedings is incorporated herein by reference to the “Legal Proceedings” sub-caption within Item 8, Note 3, “Commitments, Contingencies and Guarantees”, of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K.

ITEM 4. MINE SAFETY DISCLOSURES

Information concerning mine safety violations or other regulatory matters required by Sections 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act is included in Exhibit 95 of this Annual Report.

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INFORMATION ABOUT OUR EXECUTIVE OFFICERS

Linden R. Evans, age ~~59,~~61, has been President and Chief Executive Officer since January 1, 2019, President and Chief Operating Officer from 2016 through 2018, and President and Chief Operating Officer - Utilities from 2004 through 2015. Mr. Evans served as the Vice President and General Manager of our former communication subsidiary in 2003 and 2004, and Associate Counsel from 2001 to 2003. Mr. Evans has 2022 years of experience with the Company.

Brian G. Iverson, age ~~59,~~61, has been Senior Vice President, General Counsel and Chief Compliance Officer since August 26, 2019. He served as Senior Vice President, General Counsel, Chief Compliance Officer and Corporate Secretary from February 1, 2019 to August 26, 2019, Senior Vice President, General Counsel and Chief Compliance Officer from 2016 to February 2019, Senior Vice President - Regulatory and Governmental Affairs and Assistant General Counsel from 2014 to 2016, Vice President and Treasurer from 2011 to 2014, Vice President - Electric Regulatory Services from 2008 to 2011 and as Corporate Counsel from 2004 to 2008. Mr. Iverson has 1820 years of experience with the Company.

Todd Jacobs, age 55, has been Senior Vice President Growth and Strategy since June 15, 2023. Mr. Jacobs spent seven years in operations roles at the company, serving as the state leader for our Kansas and Arkansas utilities from 2014 to 2019 and then as the segment leader of our natural gas utilities from 2019 to 2021. He led our strategic planning and growth efforts from 2021 to 2023 before moving into this newly expanded role in 2023, which includes growth, strategic planning, business development, regulatory, government affairs, sustainability, communications and community affairs. He served in legal and corporate services leadership roles with other investor-owned utilities before joining the company in 2014. Mr. Jacobs served on active duty for seven years as a U.S. Army officer.

Marne M. Jones, age 50, has been Senior Vice President Utilities since June 15, 2023. She served as VP Electric Utilities from 2021 to 2023, Vice President Regulatory and Finance from 2018 to 2021 and Vice President Regulatory from 2016 to 2018. Ms. Jones has a total of 22 years of experience with the Company and has advanced through roles of increasing responsibility in finance, accounting, corporate services, regulatory and utility operations.

Erik D. Keller, age ~~58,~~60, joined the Company as Senior Vice President and Chief Information Officer on July 27, 2020. Prior to joining the company, he was an Information Technology consultant to Ontic Inc., a global provider of parts and services for legacy aerospace platforms, from January 2020 to July 2020, and Chief Information Officer for BBA Aviation, a global aviation support and aftermarket services provider, from February 2012 to January 2020.

~~Richard W. Kinzley,~~ Kimberly F. Nooney, age ~~56,~~52, has been Senior Vice President and Chief Financial Officer since ~~2015. He~~April 1, 2023. She served as Vice President -– Treasurer from 2015 to 2023, and also served as the Corporate Controller from ~~2013~~2018 to ~~2014, Vice President - Strategic Planning and Development from 2008 to 2013, and as Director~~2022. Ms. Nooney has a total of ~~Corporate Development from 2000 to 2008. Mr. Kinzley has 22~~27 years of experience with the ~~Company.~~Company across numerous roles within accounting, internal audit, corporate development, accounting systems, treasury and financial planning and analysis.

~~Jennifer C. Landis,~~

age 47, has been Senior Vice President - Chief Human Resources Officer since February 1, 2017. She served as Vice President of Human Resources from April 2016 through January 2017, Director of Corporate Human Resources and Talent Management from 2013 to April 2016, and Director of Organization Development from 2008 to 2013. Ms. Landis has 20 years of experience with the Company.

~~Stuart A. Wevik,~~ age 60, has been Senior Vice President - Utility Operations since August 26, 2019. He served as Group Vice President - Electric Utilities from 2016 to August 2019, Vice President - Utility Operations from 2008 to 2016, Vice President - Operations from 2004 to 2008 and Vice President and General Manager from 2003 to 2004. Mr. Wevik has 36 years of experience with the Company. Mr. Wevik intends to retire on June 1, 2022.

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PART II

ITEM 5.MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Our common stock is traded on the New York Stock Exchange under the symbol BKH. As of January 31, ~~2022,~~2024, we had ~~3,475~~3,244 common shareholders of record and ~~60,937~~63,074 beneficial owners, representing all 50 states, the District of Columbia, Puerto Rico and 75 foreign countries.

COMPARATIVE STOCK PERFORMANCE

The following performance graph compares the cumulative total stockholder return from Black Hills Corporation common stock, as compared with the S&P 500 Index, S&P 500 Utilities index, and our ~~performance peer group~~Performance Peer Group for the past five years. The graph assumes an initial investment of $100 on December 31, ~~2016,~~2018, and assumes all dividends were reinvested. The stockholder return shown below for the five-year historical period may not be indicative of future performance. The information in this "Comparative Stock Performance" section shall not be deemed to be "soliciting material" or to be "filed" with the Securities and Exchange Commission or subject to Regulation 14A or 14C, or to the liabilities of Section 18 of the Securities Exchange Act of 1934.


	As of December 31,
	2018		2019		2020		2021		2022		2023
Black Hills Corporation	$	100.00	$	128.59	$	104.05	$	123.69	$	127.49	$	102.08
S&P 500		100.00		131.49		155.68		200.37		164.08		207.21
S&P 500 Utilities		100.00		126.35		126.96		149.39		151.73		140.99
Performance Peer Group (a)		100.00		125.79		124.33		145.61		147.29		134.47

____________________

(a)

Years ended December 31,
2016 2017 2018 2019 2020 2021
Black Hills Corporation $ 100.00 $ 100.77 $ 108.81 $ 139.91 $ 113.21 $ 134.59
S&P 500 100.00 121.83 116.49 153.17 181.35 233.41
S&P 500 Utilities 100.00 112.11 116.71 147.46 148.18 174.36
Performance Peer Group (a)
100.00 113.59 119.17 143.70 123.74 140.78

~~____________________~~

~~(a)~~ Performance Peer Group represents the ~~list of 20 utility and energy industry companies~~Edison Electric Institute Index, which was used in our ~~2021~~2023 Proxy Statement ~~which was~~ filed with the SEC on March ~~18, 2021.~~15, 2023.

DIVIDENDS

For information concerning dividends, our dividend policy and factors that may limit our ability to pay dividends, see “Key ~~Elements~~Elements of our Business Strategy” and “Liquidity and Capital Resources” under Item 7, Management’s Discussion and Analysis of Financial Condition and Results of Operations in this Annual Report on Form 10-K.

UNREGISTERED SECURITIES ISSUED

There were no unregistered securities sold during ~~2021.~~2023.

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SECURITIES AUTHORIZED FOR ISSUANCE UNDER EQUITY COMPENSATION PLANS

See Item 12 in this Annual Report on Form 10-K for information regarding Securities Authorized for Issuance Under Equity Compensation Plans.

~~Table of Contents~~

ISSUER PURCHASES OF EQUITY SECURITIES

The following table contains monthly information about our acquisitions of equity securities for the three months ended December 31, ~~2021:~~

2023:


Period	Total Number of Shares Purchased (a)		Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs		Maximum Number (or Approximate Dollar Value) of Shares That May Yet Be Purchased Under the Plans or Programs
October 1, 2023 - October 31, 2023		47	$	48.44		—		—
November 1, 2023 - November 30, 2023		991	$	51.52		—		—
December 1, 2023 - December 31, 2023		7,018	$	54.62		—		—
Total		8,056	$	54.20		—		—

____________________

Period
Total Number of Shares Purchased (a)
Average Price Paid per Share Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs Maximum Number (or Approximate Dollar Value) of Shares That May Yet Be Purchased Under the Plans or Programs
October 1, 2021 - October 31, 2021 1 $ 63.15 — —
November 1, 2021 - November 30, 2021 777 66.10 — —
December 1, 2021 - December 31, 2021 8,680 68.40 — —
Total 9,458 $ 68.21 — —

(a)

~~____________________~~

~~(a)~~ Shares were acquired under the share withholding provisions of the Amended and Restated 2015 Omnibus Incentive Plan for payment of taxes associated with the vesting of various equity compensation plans.

ITEM 6.(RESERVED)

ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Executive Summary

We are a customer-focused energy solutions provider ~~that invests in our communities’ safety, sustainability and growth~~ with a mission of Improving Life with Energy for more than 1.3 million customers and ~~a vision~~800+ communities we serve. Our aspiration is to be the ~~Energy Partner of Choice. The Company’s core mission— and~~trusted energy partner across our ~~primary focus — is to provide safe, reliable and cost-effective electric and natural gas service to 1.3 million utility customers in over 800 communities in eight states,~~growing eight-state footprint, including Arkansas, Colorado, Iowa, Kansas, Montana, Nebraska, South Dakota and Wyoming. Our strategy is centered on four critical priorities:

Growth—

to grow strategically and achieve strong financial performance, Operational Excellence—delivering safe, reliable and cost-effective energy to meet our customers’ needs, Transformation—be a simple and connected company positioned for growth, and People & Culture—retain and attract a talented, engaged and thriving team.

We conduct our business operations through two operating segments: Electric Utilities and Gas Utilities. Certain unallocated corporate expenses that support our operating segments are presented as Corporate and Other. ~~The Company conducts its~~We conduct our utility operations under the name Black Hills Energy predominantly in rural areas of the Rocky Mountains and Midwestern states. ~~The Company considers itself~~We consider ourself a domestic electric and natural gas utility company.

~~The Company has~~

We have provided energy and served customers for ~~138~~140 years, since the 1883 gold rush days in Deadwood, South Dakota. Throughout our history, the common thread that unites the past to the present is our commitment to serve our customers and communities. By being responsive and service focused, we can help our customers and communities thrive while meeting rapidly changing customer expectations.

An important component of our strategy involves sustainable operations and supporting the Energy Transition. How we operate our company for the social good has never been more important. We are committed to cleaner energy and a low carbon future, integrating the Energy Transition and more renewable energy into our overall strategy and decision making. For this important work, we are ~~Ready~~

to serve. In addition, we are committed to a more sustainable future by better managing our impacts to the planet, whether that is water usage, recycling, biodiversity, or other important measures, and remaining focused on our human capital through diversity and inclusion.

Our emphasis is on consistently outperforming utility industry averages in key safety metrics; modernizing utility infrastructure; transforming the customer experience; growing our electric and natural gas customer load; and pursuing operating efficiencies. These areas of focus will present the company with significant investment needs as we harden our infrastructure systems, meet customer growth and fulfill customer expectations for cleaner energy services. It will also allow us to better understand our customer and community needs while providing more intuitive and cost-effective solutions.

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Key Elements of our Business Strategy

Explore opportunities as an energy solutions provider. A key strategic initiative is to grow our business through innovative energy solutions with new customers and partnerships. We see value creation by recruiting new customers and expanding existing partnerships with data centers and blockchain opportunities; exploring energy markets such as RTOs; and expanding our transmission capabilities, establishing a RNG program and expanding our RNG portfolio. A few recent examples of our initiatives to grow our business as an energy solutions provider include:

•

Contracted Renewable Energy to Grow Data Center Partnerships: In 2022, Wyoming Electric entered into two new PPAs with third parties to purchase up to 106 MW of wind energy and up to 150 MW of solar energy, upon construction of new renewable generation facilities (owned by third parties). The new wind generation facility was placed in service in December 2023 and the solar facility is expected to be completed in March 2024. The renewable energy from these PPAs will be used to serve our expanding partnerships with data centers.

•

Developed BCIS Tariff to Facilitate Growth: We have supported enabling legislation in Wyoming for the growing blockchain businesses while implementing our own BCIS Tariff to serve these customers. In June 2022, Wyoming Electric completed its first agreement, with a new customer in Cheyenne, Wyoming, under this Tariff. This five-year agreement provides delivery of up to 45 MW with an option to expand service up to 75 MW, which was exercised by the customer in 2023. Energy is sourced through the electric energy market and delivered through our Electric Utilities’ infrastructure. Under the agreement, the customer is responsible for costs of service, and the load is interruptible to prioritize the needs of Wyoming Electric’s existing retail customers.

•

Established Green Forward: In 2022 and 2023, we filed regulatory applications to launch Green Forward, a voluntary RNG and carbon offset program, to eligible residential and small business natural gas customers to offset up to 100% or more of the emissions from their natural gas usage. Our teams continue to evaluate attractive RNG investment opportunities across our agriculture-rich service territories and explore value generation with our natural gas storage assets. We also continue to expand our RNG interconnections, with seven projects actively injecting RNG into our natural gas system.

•

Expanded RNG Portfolio: In January 2024, Black Hills Energy Renewable Resources acquired a RNG production facility at a landfill in Dubuque, Iowa. The facility currently injects RNG into the natural gas distribution system serving Dubuque, which is owned and operated by Iowa Gas. This acquisition represents our entry into the production of RNG as a nonregulated business while leveraging our expertise in owning and operating regulated natural gas pipeline systems, including RNG interconnections. The RNG produced from the landfill facility captures methane that would otherwise vent into the atmosphere. It is delivered under long-term contracts to a third party that purchases the RNG and its related environmental attributes, in conformity with the EPA's Renewable Fuel Standard Program.

Modernize and operate utility infrastructure to provide customers with safe, reliable, cost-effective electric and natural gas service. Our utilities own and operate large electric and natural gas infrastructure systems with a geographic footprint that spans nearly 1,600 miles. Our Electric Utilities own and operate ~~1,481.5~~1,394 MW of generation capacity and ~~8,900~~9,106 miles of transmission and distribution lines and our Gas Utilities own and operate approximately 47,000 miles of natural gas transmission and distribution pipelines.

A key strategic focus is to modernize and harden our utility infrastructure to meet customers’ and communities’ varied energy needs, ensure the continued delivery of safe, reliable and cost-effective energy and reduce GHG emissions intensity. In addition, we invest in the expansion, capacity and integrity of our systems to meet customer growth.

We rigorously comply with all applicable federal, state and local regulations and strive to consistently meet industry best practice standards. A key component of our modernization effort is the development of programs by our Electric and Gas Utilities to systematically and proactively replace aging infrastructure on a system-wide basis.

To meet our electric customers’ continued expectations of high levels of reliability, a key strength of the Company, our Electric Utilities utilize an integrity program to ensure the timely repair and replacement of aging infrastructure. In alignment with this program, in November 2021, Wyoming Electric announced its Ready Wyoming electric transmission expansion initiative. The ~~285-mile,~~260-mile, multi-phase transmission expansion project will ~~serve the growing needs of~~provide customers ~~enhancing the resiliency of its overall electric system~~long-term price stability and ~~expanding access to~~greater flexibility as power markets ~~and renewable energy resources. The project will enable Wyoming Electric to maintain top-quartile reliability and support further economic growth~~develop in the ~~Cheyenne area. Wyoming Electric plans to file an application with the WPSC seeking approval for~~Western States. Construction of the project commenced in ~~the first quarter of 2022. Following approval, construction would commence~~late 2023 and is expected to take place in ~~early 2023.~~

multiple phases or segments through 2025 and will interconnect South Dakota Electric’s and Wyoming Electric’s transmission systems.

Our Gas Utilities utilize a programmatic approach to system-wide pipeline replacement, particularly in high consequence areas. Under the programmatic approach, obsolete, at-risk and vintage materials are replaced in a proactive and systematic time frame. We have removed all cast- and wrought-iron from our natural gas transmission and distribution systems and continue to replace aging infrastructure through programs that prioritize safety and reliability for our customers. Our Gas Utilities are authorized to use system safety, integrity and replacement cost recovery mechanisms that provide for customer rate adjustments, between rate reviews, which allow timely recovery of costs incurred in repairing and replacing the gas delivery systems with a return on the investment.

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As of December 31, ~~2021,~~2023, we estimate our five-year capital investment to be approximately ~~$3.2~~$4.3 billion, with most of that investment targeted toward upgrading existing utility infrastructure supporting customer and community growth needs, and complying with safety requirements. Our actual ~~2021~~2023 and forecasted capital expenditures for the next five years from ~~2022~~2024 through ~~2026~~2028 are as follows (in millions):

. Minor differences may result due to rounding.

Actual (a)
Forecasted
Capital Expenditures By Segment :
2021 2022 2023 2024 2025 2026
(in millions)
Electric Utilities $ 286 $ 239 $ 205 $ 285 $ 231 $ 155
Gas Utilities 383 363 383 386 349 346
Corporate and Other 11 9 12 13 13 13
Incremental projects (b)
— — — — 60 140
Total $ 680 $ 611 $ 600 $ 684 $ 653 $ 654

~~____________________~~


	Actual (a)		Forecasted (b)
Capital Expenditures By Segment:	2023		2024		2025		2026		2027		2028
(in millions)
Electric Utilities	$	211	$	409	$	287	$	466	$	199	$	264
Gas Utilities	$	372	$	407	$	387	$	368	$	372	$	373
Corporate and Other	$	7	$	24	$	29	$	29	$	27	$	29
Strategic growth projects	$	-	$	-	$	100	$	400	$	50	$	50
Total	$	590	$	840	$	803	$	1,263	$	648	$	717

(a)

Includes accruals for property, plant and equipment as disclosed as supplemental cash flow information in the Consolidated Statements of Cash Flows in the Consolidated Financial Statements in this Annual Report on Form 10-K. Capital expenditures are presented net of contributions in aid of construction in the Consolidated Statements of Cash Flows.

(b) ~~These represent projects that~~

Projects are being evaluated by our segments for timing, cost and other factors.

Efficiently plan, construct and operate power generation facilities to serve our Electric Utilities. We best serve customers and communities when generation is vertically integrated into our Electric ~~Utilities.~~Utilities and we retain control of the fuel source. This business model remains a core strength and strategy today as we invest in and operate efficient power generation resources to supply cost-effective electricity to our customers. These generation assets can be rate-based or non-regulated assets within our Electric Utilities segment. However, we believe that generation assets that are rate-based provide the most effective long-term benefits to customers. In the fourth quarter of 2021, we revised our operating segments to align with our vertically integrated business model for our Electric Utilities. Our power generation and mining businesses, which were previously presented as separate operating segments, are now part of our vertically integrated Electric Utilities segment.

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Our power production strategy focuses on low-cost construction and efficient operation of our generating facilities. Our low power production costs result from a variety of factors including low fuel costs (operations located near energy hubs), efficiency in converting fuel into energy and low per unit operating and maintenance costs. In addition, we operate our plants with high levels of Availability as compared to industry benchmarks.

~~Rate Base~~Rate-Based Generation: We continue to believe that customers are best served when the power generation facilities are owned and rate-based by our Electric Utilities. Rate-based generation assets offer several advantages for customers and shareholders, including:

•

When generating assets are included in the utility rate base and reviewed and approved by government authorities, customer rates are more stable and predictable, and typically less expensive in the long run; especially when compared to power otherwise purchased from the open market through wholesale contracts or PPAs that are periodically re-priced to reflect current and varying market conditions;

•

Regulators participate in a planning process where long-term investments are designed to match long-term energy demand;

•

The lower-risk profile of rate-based generation assets contributes to stronger credit ratings which, in turn, can benefit both customers and investors by lowering the cost of capital; and

•

Investors are provided a long-term and stable return on their investment.

Integrated Generation: Our Electric Utilities segment also ~~contains~~includes a power generation business that owns non-regulated generating facilities that are contracted through long-term power purchase agreements with our electric utilities. Our power generation business has an experienced staff with significant expertise in planning, building and operating power plants. This team also provides shared services to our Electric Utilities’ generation facilities, resulting in efficient management of all of the ~~company’s~~Company’s generation assets. ~~This~~Our power generation business competitively bids for energy and capacity through requests for proposals by our Electric Utilities for energy resources necessary to serve customers. This business can bid competitively due to construction expertise, fuel supply advantages and by co-locating new plants at our existing Electric Utilities’ energy complexes, reducing infrastructure and operating costs. All power plants within this business ~~except Top of Iowa,~~ are contracted to our Electric Utilities under long-term contracts, ~~and are~~ located at our utility-generating complexes ~~including Busch Ranch, Pueblo Airport Generation,~~ and ~~the Gillette, Wyoming energy complex, and are~~ physically integrated into our Electric Utilities’ operations.

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Generation Fuel Supply: Our generating facilities are strategically located close to energy hubs that help reduce fuel supply costs. Our Colorado and Wyoming gas-fired generating facilities are located close to major natural gas energy hubs that provide trading liquidity and transparent pricing. Due to their location in the resource rich areas of Colorado and Wyoming, natural gas supply to fuel our gas-fired generation can be sourced at competitive prices. Our ~~only~~ coal-fired power plants, all located at the Gillette ~~energy complex~~Energy Complex in northeastern Wyoming, are supplied by our adjacent WRDC coal mine. ~~We operate and own majority interests in four of the five power plants and own 20% of the fifth power plant. The small coal mine~~WRDC provides approximately ~~3.5~~3.7 million tons of low-sulfur coal directly to these power plants via a conveyor belt system, minimizing transportation costs. ~~On average, the~~The fuel can be delivered to ~~the~~our adjacent power plants at ~~less than $1.00 per MMBtu, providing~~ very cost competitive ~~fuel to our power plants~~prices (i.e., $1.14 per MMBtu for year ended December 31, 2023) when compared to alternatives. Nearly all the mine’s production is sold to these on-site generation facilities under long-term supply contracts. Approximately one-half of our production is sold under cost-plus contracts with affiliates. A small portion of the mine’s production is sold to off-site industrial customers and delivered by truck.

Supporting the Energy Transition by proactively integrating alternative and renewable energy into our utility energy supply while mitigating customer rate impacts. A critical component of our strategy involves sustainable operations and supporting the Energy Transition. How we operate our company for the social good has never been more important. We are committed to cleaner energy and a low carbon future, integrating the Energy Transition and more renewable energy into our overall strategy and decision making. In addition, we are committed to a more sustainable future by better managing our impacts to the planet, whether that is water usage, recycling, biodiversity, or other important measures.

In November 2020, we announced clean energy goals to reduce GHG emissions intensity for our Electric Utilities ofby 40% by 2030 and 70% by 2040 and achieve GHG reductions of 50% by 2035 for our Gas Utilities. Our goals are ~~based on existing technology~~compared to a 2005 baseline. Electric Utility goals include Scope 1 emissions from electric utility generating units and ~~computed~~Scope 3 emissions from ~~2005 baseline levels of GHG~~purchased power for sales. Our Gas Utilities goal initially included only Scope 1 emissions ~~intensity~~from distribution system main and service lines. In August 2022, we announced a new "Net Zero by 2035" target for our ~~electric operations~~Gas Utilities, which doubled the previous target of a 50% reduction by 2035 and ~~natural gas~~expanded the scope of the goal to all Scope 1 sources of methane emissions on our distribution system. Net Zero will be achieved through pipeline material and main replacements, advanced leak detection, third-party damage reduction, expanding the use of RNG and hydrogen, and utilizing carbon credit offsets.

Since 2005, we have reduced GHG emissions intensity from our ~~Gas~~Electric Utilities by ~~more than 33% and achieved~~one-third. We have plans in place today, without reliance on future technologies, to achieve our corporate climate goals calling for a ~~30%~~40% reduction in greenhouse gas emissions intensity from our ~~Electric Utilities (an additional 5% reduction since announcing our goal in 2020 for our Electric Utilities).~~electric utility operations by 2030 and 70% by 2040. Additionally, our Electric Utilities have reduced nitrogen oxide and sulfur dioxide emissions by more than 75% since 2005. ~~Our electric utility in~~ Colorado Electric has achieved a nearly 50% reduction in GHG emissions since 2005 and is on track to reach the State of Colorado’s 80% carbon reduction goal by 2030. Our goals are based on prudent and proven solutions to reduce our emissions while minimizing cost impacts to our customers. This keeps our customers at the forefront of our decision-making, which is central to our values.

More of our customers, particularly our larger customers, are demanding cleaner sources of energy to meet their sustainability goals. In addition, there is more interest from consumers, regulators and legislators to increase the use of renewable and other alternative energy sources. ToRecent efforts to support this ~~interest:~~

interest include:

~~Table of Contents~~

•We created the Renewable Ready program for South Dakota and Wyoming customers. In support of this program, we created and received approvals for new, voluntary renewable energy tariffs to serve certain commercial, industrial and governmental customer requests for renewable energy resources. To meet the renewable energy commitments under the new tariffs, on November 30, 2020, we completed construction and placed into service the Corriedale wind project, a 52.5 MW wind energy project near Cheyenne, Wyoming.

•In June 2021, South Dakota Electric and Wyoming Electric submitted an IRP to the SDPUC and WPSC. The IRP outlines a range of options for the two electric utilities over a 20-year planning horizon to meet long-term forecasted energy needs while strengthening reliability and resiliency of the grid. The analysis focused on the least-cost resource needs to best meet customers’ future peak energy needs while maintaining system flexibility and achieving the Company’s generation emissions reduction goals. The IRP’s preferred options for South Dakota Electric in the near-term planning period through 2026 ~~propose~~are the addition of 100 MW of renewable generation, the conversion of Neil Simpson II to ~~natural~~dual fuel (natural gas and coal) in 2025 and consideration of up to 20 MW of battery storage. In 2023, South Dakota Electric issued a request for proposals for 100 MW of utility-owned renewable energy resources to be in service in 2026. Negotiations are underway, with results to be presented to the SDPUC and included in a CPCN filing with the WPSC during the first quarter of 2024.

•

In March 2023, the CPUC approved a unanimous settlement for Colorado Electric's Clean Energy Plan filed on May 25, 2022. The Clean Energy Plan supports Colorado Electric's voluntary election to reduce carbon emissions 80% from 2005 levels by 2030. In July 2023, Colorado Electric issued a request for proposals for approximately 400 MW of new renewable resources to be in service by 2029 to achieve objectives in its Clean Energy Plan. Colorado Electric received a strong response to its request for proposal and provided a bids summary to the CPUC as part of the approval process. A report with Colorado Electric's recommended resources is due to the CPUC in the second quarter of 2024.

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Many states have enacted, and others are considering, mandatory renewable energy standards, requiring utilities to meet certain thresholds of renewable energy generation. In addition, some states have either enacted or are considering legislation setting GHG emission reduction targets. Federal legislation for renewable energy standards and GHG emission reductions has been considered and may be implemented in the future. Mandates for the use of renewable energy or the reduction of GHG emissions will likely drive the need for significant investment in our Electric Utilities and Gas Utilities segments. These mandates will also likely increase prices for electricity and/or natural gas for our utility customers. As a regulated utility, we are responsible for providing safe, reliable and cost-effective sources of energy to our customers. Accordingly, we employ a customer-focused strategy for complying with standards and regulations that balances our customers’ rate concerns with environmental considerations and administrative and legislative mandates. We attempt to strike this balance by prudently and proactively incorporating renewable energy into our resource supply, while seeking to minimize the magnitude and frequency of rate increases for our utility customers.

~~Explore opportunities~~Inflation Reduction Act

The IRA, signed into law by President Biden in August 2022, features $370 billion in spending and tax incentives on clean energy provisions. Most notably, the IRA includes provisions that extend and expand the production and investment tax credits for wind and solar; includes energy storage, EVs, RNG, and carbon capture and sequestration; and allows for the transferability of clean energy tax credits on existing and qualifying new facilities. We see the IRA as ~~an energy solutions provider.~~ ~~Another strategic initiative is~~generally supportive of our Energy Transition strategy with the potential to ~~grow~~drive increased value for our ~~business through creative energy solutions with new~~ customers and partnerships. We see value creation by recruiting new customers and expanding existing partnerships with data centers, crypto miners and other blockchain opportunities; exploring energy markets such as RTOs; and expanding our transmission capabilities. As an example, we have supported enabling legislation in Wyoming for the growing blockchain and digital currency businesses while implementing our own Blockchain Interruptible Service Tariff to serve these customers.shareholders. We are ~~also re-focusing~~still evaluating the impacts of the IRA provisions on our ~~product and services offerings to our natural gas customers.~~

Additionally, we are pursuing two important initiatives in the form of sustainable energy solutions for electric vehicles and renewable natural gas. These two programs support our near-term sustainable strategy and contribute to the achievement of our aspirational greenhouse gas emissions reduction goals.

•~~Electric Vehicles (EV)~~: We expect EV market share to increase over the next one to three years, commensurate with a significant uptick in vehicle range and product offerings and marked decrease in EV purchase prices. In addition to future load growth opportunities, we will investigate behind-the-meter solutions for customers. In January 2022, the CPUC approved a transportation electrification plan for Colorado Electric including the implementation of EV and charger rebates and EV rates.

•~~Renewable Natural Gas (RNG)~~: Our teams are developing RNG/carbon offset offerings for our retail customers, evaluating multiple RNG investment opportunities and exploring value generation with our natural gas storage assets. We also continue to expand our RNG interconnections, with several projects actively injecting RNG into our natural gas system.

~~Execute disciplined~~ capital ~~allocation and explore small strategic opportunities.~~ projects.

We are planning a disciplined capital investment program of approximately $600 million annually over the next two years to improve our cash flows and reduce our debt to total capitalization ratio. By carefully managing capital, we plan to continue to strengthen our balance sheet and enhance our liquidity. With this goal in mind, we will continue to evaluate smaller scale acquisitions of private utility infrastructure systems and small municipal systems that can be easily incorporated into our existing utility systems.

Deliver a competitive total return to investors and maintain an investment grade credit rating. We are proud of our track record of annual dividend increases for shareholders. ~~2021~~2023 represented our ~~51st~~53rd consecutive year of increasing dividends. In January ~~2022,~~2024, our Board of Directors declared a quarterly dividend of ~~$0.595~~$0.65 per share, equivalent to an annual dividend of ~~$2.38~~$2.60 per share. We intend to continue our record of annual dividend increases with a targeted dividend payout ratio of ~~50%~~55% to ~~60%.~~65% of net income.

We require access to the capital markets to fund our planned capital investments or acquire strategic assets that support prudent and earnings-accretive business growth. We have demonstrated our ability to cost-effectively access the debt and equity markets, while maintaining our investment-grade issuer credit rating.

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Recent Developments

Macroeconomic Trends

We continue to monitor challenging macroeconomic trends including supply chain disruptions, rising interest rates, potential recession and inflationary pressures on the prices of materials, outside services and employee costs.

~~Winter Storm Uri~~

To date, we have experienced moderate net impacts from these trends

~~In February 2021,~~. However, if current macroeconomic conditions deteriorate in 2024, adverse impacts to our businesses may be magnified.

Inflation has increased our operating expenses, which included higher employee-related expenses in 2023 compared to the prior year.

We are proactively managing increased costs of materials and supply chain disruptions to achieve our forecasted capital investment targets. To support our 2024 capital investment program, we have contracts in place with key suppliers and we have contracted services for a ~~prolonged period of historic cold temperatures across the central United States covered all~~significant portion of our ~~Utilities’ service territories, caused a substantial increase~~largest forecasted projects. We continue to forecast multi-year key material requirements with suppliers to enhance predictable material availability, challenge vendor price increases to ensure best value and cost transparency and invest in ~~heating~~our distribution network to ensure the safety and ~~energy demand~~reliability of our system. We have also evaluated each of our forecasted projects and ~~contributed~~will prioritize them depending on future constraints. Project delays may occur if costs rise significantly or if materials are not available.

Rising interest rates have led to ~~unforeseeable~~increased interest expense on recent debt issuances. These impacts were partially offset by lower short-term, variable rate borrowings and ~~unprecedented market prices for natural gas and electricity. As a result of Winter Storm Uri, we incurred significant incremental natural gas and fuel costs.~~

~~On February 24, 2021, we entered into a nine-month, $800 million unsecured term loan to provide additional liquidity and to meet~~higher interest income on our cash ~~needs related~~equivalents when compared to the ~~incremental~~prior year.

The deflationary trend in commodity prices throughout 2023 has partially offset macroeconomic headwinds from inflation and higher interest rates. Lower commodity prices have led to lower customer bills, lower cost of fuel, purchased power and natural gas sold, and improved cash flows from operations due to recoveries of deferred energy costs from ~~Winter Storm Uri. Proceeds~~customers (which were elevated at the end of 2022 and subsequently collected in 2023).

More detailed discussion of the future uncertainties can be found in Item 1A - Risk Factors.

Table of Contents

Business Segment Highlights and Corporate Activity

Electric Utilities

•

See Note 2 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K for recent rate review activity for Wyoming Electric.

•

See Key Elements of our Business Strategy section above for discussion of recent developments related to Ready Wyoming, Colorado Electric's Clean Energy Plan, and South Dakota Electric and Wyoming Electric's IRP.

•

On January 11, 2024, Wyoming Electric set a new winter peak load of 314 MW, surpassing the previous winter peaks of 301 MW set on December 26, 2023, 299 MW set on October 31, 2023, and 281 MW set in December 2022.

•

On July 24, 2023, Wyoming Electric set a new all-time and summer peak load of 312 MW, surpassing the previous peak of 294 MW set on July 21, 2022.

Gas Utilities

•

See Note 2 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K for recent rate review activity for Arkansas Gas, Colorado Gas, RMNG and Wyoming Gas.

•

See Key Elements of our Business Strategy section above for discussion of recent developments related to BHERR's purchase of a RNG production facility in Iowa.

Corporate and Other

•

On September 15, 2023, we completed a public debt offering of $450 million, 6.15% 10-year senior unsecured notes due May 15, 2034. Net proceeds from the ~~August 26, 2021 debt transaction~~offering were used to repay ~~amounts~~our $525 million principal amount outstanding ~~under this term loan.~~notes and for other general corporate purposes. See Note 8 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K for further information.

•

~~During the second quarter, our Utilities submitted cost recovery applications~~On June 16, 2023, we filed a new shelf registration statement with the ~~utility commissions in our state jurisdictions to recover incremental costs associated with Winter Storm Uri. To date, several of our Utilities have received interim or final Commission Orders~~SEC and ~~have begun recovering costs from customers. See~~ ~~Note 2~~ ~~of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K for further information on our regulatory activity.~~

~~COVID-19 Pandemic~~

For the year ended December 31, 2021, we did not experience significant impacts to our financial results, liquidity or operational activities due to COVID-19. We continue to monitor loads, customers’ ability to pay, the potential for supply chain disruption or inflation that may impact our capital and maintenance project plans, the availability of third-party resources to execute our business plans and the capital markets to ensure we have the liquidity necessary to support our financial needs. State Orders lifting temporarily suspended disconnections have been issued in all of our jurisdictions.

~~As we look forward, our operating results could be affected by COVID-19 as discussed in detail in our~~ ~~Risk Factors~~.

~~Business Segment Highlights and Corporate Activity~~

~~Electric Utilities~~

•On January 26, 2022, Colorado Electric agreed to join SPP’s Western Energy Imbalance Service Market. Colorado Electric, PRPA, and the Colorado subsidiary of Xcel Energy Inc. will join the market in April 2023 and will continue to study long-term solutions for joining or developing an organized wholesale market. The expansion allows the utilities to participate in a real-time market to dispatch energy at lower costs.

•On January 5, 2022, South Dakota Electric and Wyoming Electric set new winter peak loads. This is the fourth new winter peak for Wyoming Electric since 2015. Wyoming Electric’s new winter peak load of 253 MW surpasses the previous peak of 247 MW set in December 2019. South Dakota Electric’s new winter peak of 327 MW surpasses the previous winter peak of 326 MW set in February 2021.

•~~In November 2021, Wyoming Electric announced its~~ ~~Ready Wyoming~~ ~~electric transmission expansion initiative. See~~ ~~Key Elements of our Business Strategy~~ ~~above for further information.~~

•On October 5, 2021, our Electric Utilities and several other utilities in the western United States formed the Western Markets Exploratory Group to research the potential for an organized wholesale market in the western interconnect, including expanding transmission systems and other grid-related services. The group plans to identify market solutions that can help achieve carbon reduction goals while supporting reliable, cost-effective services for customers.

•On September 19, 2021, Wygen I experienced an unplanned outage that continued until mid-December 2021. For the year ended December 31, 2021, the outage had an $11 million negative impact to Operating income. We are currently assessing insurance recovery opportunities.

•On August 24, 2021, Wyoming Electric issued a request for proposals under its Blockchain Interruptible Service tariff. We have narrowed the bidder’s list and selected finalists for contract negotiations.

•~~On July 28, 2021, Wyoming Electric set a new all-time and summer peak load of 274 MW, exceeding the previous peak of 271 MW set in July 2020.~~

•~~On July 27, 2021, South Dakota Electric set a new all-time and summer peak load of 397 MW, exceeding the previous peak of 378 MW set in August 2020.~~

~~Table of Contents~~

•~~On June 30, 2021, South Dakota Electric and Wyoming Electric submitted an IRP to the SDPUC and WPSC. See~~ ~~Key Elements of our Business Strategy~~ ~~above for further information.~~

•~~On February 19, 2021, Colorado Electric~~ entered into a ~~PPA with TC Colorado Solar, LLC (TC Solar)~~new Equity Distribution Sales Agreement. The new Equity Distribution Sales Agreement is similar to ~~purchase~~our prior agreement and allows us to sell shares of common stock up to ~~200 MW~~an aggregate of ~~renewable energy upon construction~~$400 million through our ATM program utilizing our shelf registration statement. As of ~~a new solar facility,~~December 31, 2023, we have $329 million available to be owned by TC Solar. On January 31, 2022, TC Solar provided termination notice of the PPA to Colorado Electric. Colorado Electric has disputed TC Solar’s right to termination and pursuant to the agreement, has initiated discussions with TC Solar.

~~Gas Utilities~~

•issue under this program. See ~~Note 2~~ ~~of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K for recent regulatory activity for our Gas Utilities in Arkansas, Colorado, Iowa, Kansas and Nebraska.~~

~~Corporate and Other~~

•On August 26, 2021, we completed a public debt offering which consisted of $600 million, 1.037% 3-year senior unsecured notes due August 23, 2024. The proceeds from the offering were used to repay amounts outstanding under our term loan entered into on February 24, 2021. See Note 8 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K for further information.

•

On ~~July 19, 2021,~~March 7, 2023, we ~~amended~~completed a public debt offering of $350 million, 5.95% 5-year senior unsecured notes due March 15, 2028. The proceeds from the offering were used to repay notes outstanding under our commercial paper program and ~~restated our~~for other general corporate ~~Revolving Credit Facility.~~purposes. See Note 8 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K for further information.

Table of Contents

Results of Operations

Our discussion and analysis for the year ended December 31, ~~2021~~2023, compared to ~~2020 as well as~~2022 is included herein. For discussion and analysis ~~of the results of operations~~ for the year ended December 31, ~~2020~~2022, compared to ~~2019, is included herein. For further discussion and analysis that remains unchanged for the year ended December 31, 2020 compared to 2019,~~2021, please refer to Item 7 of Part II, “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in our Annual Report on Form 10-K for the year ended December 31, ~~2020,~~2022, which was filed with the SEC on February ~~26, 2021.~~

14, 2023.

In the fourth quarter of 2021, we integrated our power generation and mining businesses within the Electric Utilities segment. The alignment is consistent with the current way our CODM evaluates the performance of the business and makes decisions related to the allocation of resources. Comparative periods presented reflect this change. See further segment information in ~~Note 16~~

~~of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K.~~

~~Segment information does not include intercompany eliminations and all~~All amounts are presented on a pre-tax basis unless otherwise indicated. Minor differences in amounts may result due to rounding.

Consolidated Summary and Overview

For the Years Ended December 31,
2021 2020 2019
(in thousands, except per share amounts)
Operating income (loss):
Electric Utilities $ 202,676 $ 210,974 $ 217,677
Gas Utilities 211,157 215,889 189,971
Corporate and Other (4,404) 1,440 (1,606)
Operating Income 409,429 428,303 406,042
Interest expense, net (152,404) (143,470) (137,659)
Impairment of investment — (6,859) (19,741)
Other income (expense), net 1,404 (2,293) (5,740)
Income tax (expense) (7,169) (32,918) (29,580)
Net income 251,260 242,763 213,322
Net income attributable to non-controlling interest (14,516) (15,155) (14,012)
Net income available for common stock $ 236,744 $ 227,608 $ 199,310
Total earnings per share of common stock, Diluted $ 3.74 $ 3.65 $ 3.28


	For the Years Ended December 31,
	2023			2022			2023 vs 2022 Variance			2021			2022 vs 2021 Variance
	(in millions, except per share amounts)
Operating income (loss):
Electric Utilities	$	248.8		$	214.3		$	34.5		$	202.7		$	11.6
Gas Utilities		228.8			244.2			(15.4	)		211.2			33.0
Corporate and Other (a)		(4.9	)		(3.3	)		(1.6	)		(4.5	)		1.2
Operating Income		472.7			455.2			17.5			409.4			45.8

Interest expense, net		(167.9	)		(161.0	)		(6.9	)		(152.4	)		(8.6	)
Other income (expense), net		(3.2	)		1.8			(5.0	)		1.4			0.4
Income tax (expense)		(25.6	)		(25.2	)		(0.4	)		(7.2	)		(18.0	)
Net income		276.0			270.8			5.2			251.3			19.5
Net income attributable to non-controlling interest		(13.8	)		(12.4	)		(1.4	)		(14.5	)		2.1
Net income available for common stock	$	262.2		$	258.4		$	3.8		$	236.7		$	21.7

Total earnings per share of common stock, Diluted	$	3.91		$	3.97		$	(0.06	)	$	3.74		$	0.23

(a)

Includes inter-segment eliminations.

~~2021~~

2023 Compared to ~~2020~~

2022

The variance to the prior year included the following:

•

Electric Utilities’ operating income ~~decreased $8.3~~increased $34.5 million primarily due to ~~Colorado Electric’s TCJA-related bill credits~~new rates and rider recovery, a one-time gain on the planned sale of Northern Iowa Windpower assets, a gain on a strategic sale of land in Wyoming to ~~customers (which is offset by reduced tax expense), unfavorable impacts~~a customer to support continued load growth, and a one-time recovery from ~~an unplanned outage at~~our business interruption insurance related to the 2021 Wygen I ~~and higher depreciation as a result of additional plant placed in service,~~unplanned outage partially offset by ~~increased power marketing~~unfavorable weather, higher depreciation expense and wholesale revenues, increased rider revenues, increased commercial and industrial demand, a prior year expense related to the early retirement of certain non-regulated generation assets, residential customer growth and increased usage, and prior year COVID-19 impacts;higher employee-related expenses;

•

Gas Utilities’ operating income decreased ~~$4.7~~$15.4 million primarily due to unfavorable weather, a prior year one-time true-up of carrying costs accrued on Winter Storm Uri ~~costs incurred by Black Hills Energy Services, lower heating demand from milder weather (primarily in the fourth quarter of 2021), Nebraska Gas TCJA-related bill credits to customers~~regulatory assets and higher operating expenses partially offset by new rates and rider recovery and retail customer ~~growth;~~growth and demand;

•~~Corporate~~

Interest expense increased $6.9 million due to higher interest rates partially offset by increased interest income on higher cash and cash equivalents balances; and

•

Other ~~expenses~~expense, net increased ~~$5.8~~$5.0 million primarily due to higher ~~employee~~benefit plan non-service costs driven by ~~a prior year favorable true-up;~~

•~~Interest expense increased $8.9 million primarily due to~~ higher ~~debt balances partially offset by lower rates;~~

•~~A prior year $6.9 million pre-tax non-cash impairment in 2020 of our investment in equity securities of a privately held oil~~discount rates and ~~gas company;~~

•~~Other income increased $3.7 million primarily due to lower non-service pension costs driven by a lower discount rate, lower~~higher costs for our non-qualified ~~benefit plans which were~~deferred compensation plan driven by market ~~performance and recognition of death benefits from Company-owned life insurance; and~~

36performance.

~~Table of Contents~~

•Income tax expense decreased $26 million primarily due to lower pre-tax income and a lower effective tax rate driven primarily by tax benefits from Colorado Electric and Nebraska Gas TCJA-related bill credits (which is offset by reduced revenue), flow-through tax benefits related to repairs and gain deferral and increased tax benefits from federal production tax credits associated with new wind assets.

~~2020 Compared to 2019~~

~~The variance to the prior year included the following:~~

•COVID-19 related impacts to consolidated results included $3.6 million of lower Electric and Gas Utility margin driven primarily by lower volumes and waived customer late payment fees, $2.6 million of costs due to sequestration of essential employees and $3.3 million of additional bad debt expense which were partially offset by $3.8 million of lower travel, training, and outside services related expenses;

•Electric Utilities’ operating income decreased $6.7 million due to higher depreciation and amortization expense as a result of additional plant placed in service including new wind assets, expense from the early retirement of certain non-regulated assets, lower commercial and industrial demand and COVID-19 impacts partially offset by increased revenue from our non-regulated power generation and mining businesses, benefits from the release of TCJA revenue reserves and increased rider revenues;

•Gas Utilities’ operating income increased $26 million primarily due to new customer rates in Wyoming and Nebraska and increased rider revenues, customer growth, mark-to-market gains on non-utility natural gas commodity contracts and a 2019 amortization of excess deferred income taxes partially offset by higher depreciation and amortization expense as a result of additional plant placed in service, COVID-19 impacts and unfavorable weather;

•~~Corporate and Other expenses decreased $3.0 million primarily due to an unallocated favorable true-up of employee costs;~~

•~~A $6.9 million pre-tax non-cash impairment in 2020 of our investment in equity securities of a privately held oil and gas company compared to a similar $20 million impairment in 2019;~~

•~~Interest expense increased $5.8 million primarily due to higher debt balances partially offset by lower rates;~~

•Other expense decreased $3.4 million due to the 2019 expensing of $5.4 million of development costs related to projects we no longer intend to construct partially offset by increased pension non-service costs in 2020; and

•~~Income tax expense increased $3.3 million primarily due to higher pre-tax income partially offset by a lower effective tax rate.~~

Segment Operating Results

~~A discussion of operating results from our business segments follows.~~

Non-GAAP Financial Measure

The following discussion includes financial information prepared in accordance with GAAP, as well as another financial measure, Electric and Gas Utility margin, that is considered a “non-GAAP financial measure.” Generally, a non-GAAP financial measure is a numerical measure of a company’s 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. Electric and Gas Utility margin (revenue less cost of sales) is a non-GAAP financial measure due to the exclusion of operation and maintenance expenses, depreciation and amortization expenses, and property and production taxes from the measure.

Table of Contents

Electric Utility margin is calculated as operating revenue less cost of fuel and purchased power. Gas Utility margin is calculated as operating revenue less cost of natural gas sold. Our Electric and Gas Utility margin is impacted by the fluctuations in power and natural gas purchases and other fuel supply costs. However, while these fluctuating costs impact Electric and Gas Utility margin as a percentage of revenue, they only impact total Electric and Gas Utility margin if the costs cannot be passed through to our customers.

Our Electric and Gas Utility margin measure may not be comparable to other companies’ Electric and Gas Utility margin measures. Furthermore, this measure is not intended to replace operating income as determined in accordance with GAAP as an indicator of operating performance.

~~Table of Contents~~

Electric Utilities

Operating results for the years ended December 31 for the Electric Utilities were as follows (in ~~thousands)~~millions):

2021 2020 2021 vs 2020 Variance 2019 2020 vs 2019 Variance
Revenue:
Electric - regulated $ 800,747 $ 699,712 $ 101,035 $ 698,807 $ 905
Other - non-regulated 41,511 39,145 2,366 40,548 (1,403)
Total revenue 842,258 738,857 103,401 739,355 (498)
Fuel and Purchased Power:
Electric - regulated 244,504 136,374 108,130 143,668 (7,294)
Other - non-regulated 3,514 2,198 1,316 2,305 (107)
Total fuel and purchased power 248,018 138,572 109,446 145,973 (7,401)
Electric Utility margin (non-GAAP) 594,240 600,285 (6,045) 593,382 6,903
Operations and maintenance 260,036 265,679 (5,643) 259,167 6,512
Depreciation and amortization 131,528 123,632 7,896 116,538 7,094
Total operating expenses 391,564 389,311 2,253 375,705 13,606
Operating income $ 202,676 $ 210,974 $ (8,298) $ 217,677 $ (6,703)

~~2021~~


	2023		2022		2023 vs 2022 Variance			2021		2022 vs 2021 Variance
Revenue:
Electric - regulated	$	817.4	$	852.2	$	(34.8	)	$	800.7	$	51.5
Other - non-regulated		47.6		48.0		(0.4	)		41.5		6.5
Total revenue		865.0		900.2		(35.2	)		842.2		58.0

Fuel and Purchased Power:
Electric - regulated		198.3		261.7		(63.4	)		244.5		17.2
Other - non-regulated		1.8		4.6		(2.8	)		3.5		1.1
Total fuel and purchased power		200.1		266.3		(66.2	)		248.0		18.3

Electric Utility margin (non-GAAP)		664.9		633.9		31.0			594.2		39.7

Operations and maintenance		236.2		244.8		(8.6	)		224.5		20.3
Depreciation and amortization		142.6		135.9		6.7			131.5		4.4
Taxes - property and production		37.3		38.9		(1.6	)		35.5		3.4
		416.1		419.6		(3.5	)		391.5		28.1

Operating income	$	248.8	$	214.3	$	34.5		$	202.7	$	11.6

2023 Compared to ~~2020~~

2022

Electric Utility margin ~~decreased~~increased over the prior year as a result of:


	(in millions)
New rates and rider recovery	$	29.4
Wygen I revenue recovery under business interruption insurance (a)		5.0
Integrated Generation (b)		3.3
Transmission services		3.2
Weather		(6.2	)
Retail customer usage		(4.4	)
Other		0.7
	$	31.0


	~~(in millions)~~(a)
~~TCJA-related bill credits~~ ~~(a)~~	$	~~(10.2)~~
~~Wygen I unplanned outage~~	~~(8.5)~~
~~Prior year release of TCJA revenue reserves~~	~~(2.2)~~
~~Weather~~	~~(1.2)~~
~~Winter Storm Uri impacts~~ ~~(b)~~	~~(0.4)~~
~~Power marketing and wholesale~~	~~5.9~~
~~Residential customer growth and increased usage per customer~~	~~5.1~~
~~Rider recovery~~	~~4.2~~
~~Prior year COVID-19 impacts~~	~~1.8~~
~~Other~~	~~(0.5)~~
~~Total decrease in Electric Utility margin~~	$	~~(6.0)~~

~~____________________~~

~~(a)~~ In ~~February and April~~ 2021, ~~Colorado Electric delivered TCJA-related bill credits to its customers. These bill credits were offset by a reduction in income tax expense and~~Wygen I experienced an unplanned outage which resulted in ~~a minimal impact~~lost revenue. A claim for these losses was submitted under our business interruption insurance policy. During the third quarter of 2023, we recovered $5.0 million from our business interruption insurance which was recognized as Revenue. See Note 3 of the Notes to ~~Net income.~~Consolidated Financial Statements in this Annual Report on Form 10-K for further information.

(b) ~~As a result of Winter Storm Uri, our Electric Utilities incurred $2.1 million of incremental fuel costs that are not recoverable through our fuel cost recovery mechanisms which were mostly offset~~

Primarily driven by ~~$1.7 million of~~favorable mining contract pricing and increased ~~Electric Utility margin realized under~~ Black Hills ~~Wyoming’s Economy Energy PSA.~~Colorado IPP fired-engine hours.

Operations and maintenance expense decreased primarily due to a ~~$3.1~~one-time $7.7 million ~~prior year expense related~~gain on the planned sale of Northern Iowa Windpower assets, a $3.9 million gain on a strategic sale of land in Wyoming to ~~the early retirement of certain non-regulated generation assets, $2.7~~a customer to support continued load growth, and $2.9 million of lower ~~overburden, production taxes and other operating~~outside services expenses ~~on decreased mining volumes, $2.0 million of prior year COVID-19 expenses and $1.7 million of decreased bad debt expense associated with lower expected credit losses,~~ partially offset by ~~$2.7~~$8.7 million of ~~increased expenses related to planned and unplanned outages at our generation facilities and $1.0 million of increased operating expenses from new wind assets.~~higher employee-related expenses.

~~Table of Contents~~

Depreciation and amortization increased primarily due to higher asset base driven by prior and current year capital expenditures.

~~2020 Compared to 2019~~

~~Electric Utility margin~~Taxes - property and production ~~increased in 2020 over 2019 as a result of:~~


	~~(in millions)~~
~~Integrated Generation~~ ~~(a)~~	$	~~3.3~~
~~Rider recovery~~	~~2.3~~
~~Release of TCJA revenue reserves~~ ~~(b)~~	~~2.2~~
~~Transmission services~~	~~1.4~~
~~Residential customer growth~~	~~0.9~~
~~Lower commercial and industrial demand~~	~~(2.7)~~
~~COVID-19 impacts~~ ~~(c)~~	~~(1.8)~~
~~Weather~~	~~(0.3)~~
~~Other~~	~~1.6~~
~~Total increase in Electric Utility margin~~	$	~~6.9~~

~~____________________~~

~~(a) Primarily driven by revenue from Busch Ranch II, which was placed in service in November 2019.~~

(b) In July 2020, regulatory proceedings resolved the last of the Company's open dockets seeking approval of its TCJA plans. As a result, the Company reversed certain TCJA-related liabilities, which resulted in an increase to Electric Utility margin of $2.2 million. See ~~Note 2~~ ~~of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K for additional details.~~

~~(c) The impacts to Electric Utility margin from COVID-19~~ were ~~primarily driven by reduced commercial volumes and waived customer late payment fees partially offset by higher residential usage.~~

~~Operations and maintenance expense~~ ~~increased primarily due to a $3.1 million expense related~~comparable to the ~~early retirement~~same period in the prior year.

Table of certain non-regulated assets, $2.0 million of higher maintenance expense from new wind assets and $2.0 million of unfavorable net impacts from COVID-19 which included $2.6 million of expenses related to the sequestration of essential employees and $0.8 million of additional bad debt expense which were partially offset by $1.4 million of lower travel, training and outside services related expenses. Additionally, lower employee costs of $1.9 million were partially offset by $1.0 million of higher property taxes due to a higher asset base driven by capital expenditures.Contents

~~Depreciation and amortization~~

~~increased primarily due to higher asset base driven by capital expenditures.~~

Operating Statistics


	Revenue (in millions)						Quantities Sold (GWh)
For the year ended December 31,	2023		2022		2021		2023		2022		2021
Residential	$	224.9	$	246.7	$	244.6		1,438.5		1,513.1		1,494.0
Commercial		259.8		277.9		276.0		2,074.4		2,087.8		2,075.7
Industrial		159.4		166.4		149.0		2,094.8		1,912.5		1,751.4
Municipal		17.5		20.5		19.1		150.9		159.3		162.9
Subtotal Retail Revenue - Electric		661.6		711.5		688.7		5,758.6		5,672.7		5,484.0
Contract Wholesale		22.0		25.9		16.1		579.1		654.0		574.1
Off-system/Power Marketing Wholesale		42.5		48.6		41.7		737.9		643.2		638.9
Other (a)		91.2		66.2		54.2		-		-		-
Total Regulated		817.3		852.2		800.7		7,075.6		6,969.9		6,697.0
Non-Regulated (b)		47.7		48.0		41.5		120.6		293.0		269.6
Total Revenue and Quantities Sold	$	865.0	$	900.2	$	842.2		7,196.2		7,262.9		6,966.6
Other Uses, Losses or Generation, net (c)								463.5		450.0		475.3
Total Energy								7,659.7		7,712.9		7,441.9

Revenue (in thousands) Quantities Sold (MWh)
For the year ended December 31, 2021 2020 2019 2021 2020 2019
Residential $ 244,589 $ 221,530 $ 216,108 1,494,028 1,477,515 1,440,551
Commercial 275,998 239,166 246,704 2,075,690 1,974,043 2,055,253
Industrial 149,040 131,154 131,831 1,751,344 1,794,795 1,787,412
Municipal 19,092 16,860 17,206 162,903 158,222 157,298
Subtotal Retail Revenue - Electric 688,719 608,710 611,849 5,483,965 5,404,575 5,440,514
Contract Wholesale 16,128 17,847 19,078 574,137 492,637 368,360
Off-system/Power Marketing Wholesale 41,682 15,511 17,886 638,923 437,288 507,042
Other (a)
54,218 57,644 49,994 — — —
Total Regulated 800,747 699,712 698,807 6,697,025 6,334,500 6,315,916
Non-Regulated (b)
41,511 39,145 40,548 269,558 258,399 238,415
Total Revenue and Quantities Sold 842,258 738,857 739,355 6,966,583 6,592,899 6,554,331
Other Uses, Losses or Generation, net (c)
475,280 406,422 393,573
Total Energy 7,441,863 6,999,321 6,947,904

(a)

~~____________________~~

~~(a)~~ Primarily related to transmission revenues from the Common Use System.

(b)

Includes Integrated Generation and non-regulated services to our retail customers under the Service Guard Comfort Plan and Tech Services.

(c)

Includes company uses and line losses.


	Revenue (in millions)						Quantities Sold (GWh)
For the year ended December 31,	2023		2022		2021		2023		2022		2021
Colorado Electric	$	285.7	$	321.1	$	302.9		2,397.2		2,440.0		2,574.0
South Dakota Electric		321.1		335.2		319.4		2,554.3		2,626.2		2,389.4
Wyoming Electric		212.2		197.7		180.4		2,124.1		1,903.7		1,733.6
Integrated Generation		46.0		46.2		39.5		120.6		293.0		269.6
Total Revenue and Quantities Sold	$	865.0	$	900.2	$	842.2		7,196.2		7,262.9		6,966.6


	For the year ended December 31,
Quantities Generated and Purchased by Fuel Type (GWh)	2023		2022		2021
Generated:
Coal		2,683.4		2,708.8		2,546.9
Natural Gas		2,021.4		1,454.2		1,817.2
Wind (a)		678.5		875.8		842.6
Total Generated		5,383.3		5,038.8		5,206.7
Purchased:
Coal, Natural Gas, Diesel Oil and Other Market Purchases		1,842.9		2,280.8		1,866.4
Wind and Solar		433.5		393.3		368.8
Total Purchased		2,276.4		2,674.1		2,235.2
Total Generated and Purchased		7,659.7		7,712.9		7,441.9

(a)

39Wind generation decreased due to the sale of Northern Iowa Windpower assets in March 2023.


	For the year ended December 31,
Quantities Generated and Purchased (GWh)	2023		2022		2021
Generated:
Colorado Electric		653.9		474.4		412.1
South Dakota Electric		2,018.5		1,890.0		1,980.7
Wyoming Electric		908.3		905.8		883.6
Integrated Generation		1,802.5		1,768.6		1,842.4
Total Generated		5,383.2		5,038.8		5,118.8
Purchased:
Colorado Electric		588.2		1,005.4		1,027.7
South Dakota Electric		604.6		826.4		563.6
Wyoming Electric		1,028.5		757.2		643.9
Integrated Generation		55.2		85.1		87.9
Total Purchased		2,276.5		2,674.1		2,323.1

Total Generated and Purchased		7,659.7		7,712.9		7,441.9

Table of Contents

Electric Revenue (in thousands) Quantities Sold (MWh)
For the year ended December 31, 2021 2020 2019 2021 2020 2019
Colorado Electric $ 302,896 $ 252,094 $ 246,197 2,574,016 2,243,034 2,046,728
South Dakota Electric 319,362 280,431 288,120 2,389,407 2,363,776 2,519,448
Wyoming Electric 180,413 169,179 167,345 1,733,602 1,727,690 1,749,740
Integrated Generation 39,587 37,153 37,693 269,558 258,399 238,415
Total Revenue and Quantities Sold $ 842,258 $ 738,857 $ 739,355 6,966,583 6,592,899 6,554,331


	For the year ended December 31,
Degree Days	2023			2022			2021
	Actual		Variance from Normal	Actual		Variance from Normal	Actual		Variance from Normal
Heating Degree Days:
Colorado Electric		5,330	1%		5,551	9%		5,023	(11)%
South Dakota Electric		6,969	(4)%		7,495	6%		6,819	(5)%
Wyoming Electric		6,783	(1)%		7,051	3%		6,702	(6)%
Combined (a)		6,185	(1)%		6,518	6%		5,974	(7)%

Cooling Degree Days:
Colorado Electric		1,046	(10)%		1,362	9%		1,245	39%
South Dakota Electric		497	(21)%		814	27%		827	30%
Wyoming Electric		329	(30)%		701	47%		604	74%
Combined (a)		713	(15)%		1,040	18%		973	40%

(a)

For the year ended December 31,
Quantities Generated and Purchased by Fuel Type (MWh) 2021 2020 2019
Generated:
Coal 2,546,926 2,817,846 2,783,147
Natural Gas and Oil 1,817,133 1,753,568 1,535,999
Wind 842,616 614,236 406,295
Total Generated 5,206,675 5,185,650 4,725,441
Purchased:
Coal, Natural Gas, Oil and Other Market Purchases 1,866,382 1,478,536 2,019,359
Wind 368,806 335,135 203,104
Total Purchased 2,235,188 1,813,671 2,222,463
Total Generated and Purchased 7,441,863 6,999,321 6,947,904

For the year ended December 31,
Quantities Generated and Purchased (MWh) 2021 2020 2019
Generated:
Colorado Electric 412,127 265,552 443,770
South Dakota Electric 1,980,660 1,901,009 1,768,456
Wyoming Electric 883,596 851,522 852,803
Integrated Generation 1,842,377 2,085,042 1,660,412
Total Generated 5,118,760 5,103,125 4,725,441
Purchased:
Colorado Electric 1,027,728 714,139 741,666
South Dakota Electric 563,603 489,457 896,901
Wyoming Electric 643,857 610,075 509,697
Integrated Generation 87,915 82,525 74,199
Total Purchased 2,323,103 1,896,196 2,222,463
Total Generated and Purchased 7,441,863 6,999,321 6,947,904

~~Table of Contents~~

For the year ended December 31,
Degree Days 2021 2020 2019
Actual Variance from Normal Actual Variance from Normal Actual Variance from Normal
Heating Degree Days:
Colorado Electric 5,023 (11)% 5,103 (9)% 5,453 (3)%
South Dakota Electric 6,819 (5)% 6,910 (3)% 8,284 16%
Wyoming Electric 6,702 (6)% 6,771 (5)% 7,406 1%
Combined (a)
5,974 (7)% 6,056 (6)% 6,813 5%
Cooling Degree Days:
Colorado Electric 1,245 39% 1,384 54% 1,226 37%
South Dakota Electric 827 30% 682 7% 404 (36)%
Wyoming Electric 604 74% 594 71% 462 33%
Combined (a)
973 40% 985 41% 791 14%

~~____________________~~

~~(a)~~ Degree days are calculated based on a weighted average of total customers by state.


	For the year ended December 31,
Contracted generating facilities availability by fuel type (a)	2023	2022	2021
Coal	93.7%	91.5%	86.7%
Natural gas and diesel oil	92.1%	96.1%	95.5%
Wind	92.5%	93.7%	95.8%
Total availability	92.6%	94.4%	93.2%

Wind Capacity Factor	37.4%	34.7%	34.0%

(a)

For the year ended December 31,
Contracted generating facilities Availability by fuel type(a)
2021 2020 2019
Coal (b)
86.7% 94.3% 92.4%
Natural gas and diesel oil (c)
95.5% 84.6% 90.5%
Wind 95.8% 95.1% 89.5%
Total availability 93.2% 89.2% 90.9%
Wind Capacity Factor 34.0% 31.8% 30.9%

~~____________________~~

~~(a)~~ Availability and Wind Capacity Factor are calculated using a weighted average based on capacity of our generating fleet.

~~(b) 2021 included planned outages at Neil Simpson II, Wygen II, and Wygen III and unplanned outages at Wygen I, Neil Simpson II and Wyodak Plant.~~

~~Table of Contents~~

Gas Utilities

Operating results for the years ended December 31 for the Gas Utilities were as follows (in ~~thousands)~~millions):


	2023		2022		2023 vs 2022 Variance			2021		2022 vs 2021 Variance
Revenue:
Natural gas - regulated	$	1,399.1	$	1,584.6	$	(185.5	)	$	1,051.6	$	533.0
Other - non-regulated services		85.1		84.5		0.6			73.3		11.2
Total revenue		1,484.2		1,669.1		(184.9	)		1,124.9		544.2

Cost of natural gas sold:
Natural gas - regulated		760.2		942.1		(181.9	)		480.3		461.8
Other - non-regulated services		23.0		23.0		—			14.4		8.6
Total cost of natural gas sold		783.2		965.1		(181.9	)		494.7		470.4

Gas Utility margin (non-GAAP)		701.0		704.0		(3.0	)		630.2		73.8

Operations and maintenance		328.7		317.3		11.4			290.2		27.1
Depreciation and amortization		113.9		114.7		(0.8	)		104.2		10.5
Taxes - property and production		29.6		27.8		1.8			24.6		3.2
		472.2		459.8		12.4			419.0		40.8

Operating income	$	228.8	$	244.2	$	(15.4	)	$	211.2	$	33.0

2021 2020 2021 vs 2020 Variance 2019 2020 vs 2019 Variance
Revenue:
Natural gas - regulated $ 1,051,610 $ 900,637 $ 150,973 $ 932,111 $ (31,474)
Other - non-regulated services 73,255 74,033 (778) 77,919 (3,886)
Total revenue 1,124,865 974,670 150,195 1,010,030 (35,360)
Cost of natural gas sold:
Natural gas - regulated 480,293 347,611 132,682 406,643 (59,032)
Other - non-regulated services 14,445 7,034 7,411 19,255 (12,221)
Total cost of natural gas sold 494,738 354,645 140,093 425,898 (71,253)
Gas Utility margin (non-GAAP) 630,127 620,025 10,102 584,132 35,893
Operations and maintenance 314,810 303,577 11,233 301,844 1,733
Depreciation and amortization 104,160 100,559 3,601 92,317 8,242
Total operating expenses 418,970 404,136 14,834 394,161 9,975
Operating income $ 211,157 $ 215,889 $ (4,732) $ 189,971 $ 25,918

Table of Contents

~~2021~~2023 Compared to ~~2020~~

2022

Gas Utility margin ~~increased~~decreased over the prior year as a result of:


	(in millions)
New rates and rider recovery	$	19.8
Retail customer growth and demand		7.6
Weather		(14.5	)
Prior year true-up of Winter Storm Uri carrying costs (a)		(10.3	)
Mark-to-market on non-utility natural gas commodity contracts		(3.5	)
Other		(2.1	)
	$	(3.0	)


	~~(in millions)~~(a)
~~New rates~~	$	~~20.5~~
~~Carrying costs on Winter Storm Uri regulatory asset~~ ~~(a)~~	~~4.0~~
~~Increased transport and transmission~~	~~2.2~~
~~Prior year COVID-19 impacts~~	~~1.8~~
~~Mark-to-market on non-utility natural gas commodity contracts~~	~~0.9~~
~~Black Hills Energy Services Winter Storm Uri costs~~ ~~(b)~~	~~(8.2)~~
~~Weather~~	~~(6.8)~~
~~TCJA-related bill credits~~ ~~(c)~~	~~(2.9)~~
~~Other~~	~~(1.4)~~
~~Total increase in Gas Utility margin~~	$	~~10.1~~

~~____________________~~

~~(a)~~ In certain jurisdictions, we have ~~Commission~~commission approval to recover carrying costs on Winter Storm Uri regulatory assets which offset increased interest expense.

~~(b) Black Hills Energy Services offers fixed contract pricing for non-regulated gas supply services~~ Additionally, the carrying costs accrued during the year ended December 31, 2022 included a one-time, $10.3 million true-up to ~~our regulated natural gas customers. The increased cost of natural gas sold during Winter Storm Uri is not recoverable through a regulatory mechanism.~~reflect commission authorized rates.

(c) In June 2021, Nebraska Gas delivered TCJA-related bill credits to its customers. These bill credits were offset by a reduction in income tax expense and resulted in a minimal impact to Net income.

Operations and maintenance expense increased primarily due to ~~$9.6~~$14.8 million of higher employee costs, $3.3 million of higher property taxes due to a higher asset base driven by prior and current year capital expenditures and $2.0 million of higher outside services expenses. The increase in expense wasemployee-related expenses partially offset by ~~$4.4~~$5.0 million of ~~decreased bad debt expense associated with~~ lower ~~expected credit losses.~~outside services expenses.

Depreciation and amortization ~~increased primarily due~~was comparable to ~~a higher asset base driven by~~the prior year.

Taxes - property and ~~current year capital expenditures partially offset by lower depreciation rates approved in the Nebraska Gas and Colorado Gas rate reviews.~~

~~Table of Contents~~

~~2020 Compared to 2019~~

~~Gas Utility margin~~production ~~increased in 2020 over 2019 as a result of:~~


	~~(in millions)~~
~~New rates~~	$	~~25.4~~
~~Customer growth - distribution~~	~~5.6~~
~~Mark-to-market on non-utility natural gas commodity contracts~~	~~3.3~~
~~Amortization of excess deferred income taxes in 2019~~	~~2.6~~
~~Weather~~	~~(1.8)~~
~~COVID-19 impacts~~ ~~(a)~~	~~(1.8)~~
~~Other~~	~~2.6~~
~~Total increase in Gas Utility margin~~	$	~~35.9~~

~~____________________~~

~~(a) The impacts~~were comparable to ~~Gas Utility margin from COVID-19 were primarily driven by reduced volumes from certain transport customers and waived customer late payment fees.~~

the prior year.

~~Operations and maintenance expense~~

increased primarily due to higher property taxes due to a higher asset base driven by capital expenditures. Lower employee costs were mostly offset by various other 2020 expenses. COVID-19 impacts to operations and maintenance expense included $2.5 million of additional bad debt expense which was partially offset by $2.4 million of lower travel, training, and outside services related expenses.

~~Depreciation and amortization~~ ~~increased primarily due to a higher asset base driven by capital expenditures.~~

Operating Statistics


	Revenue (in millions)						Quantities Sold and Transported (Dth in millions)
	For the year ended December 31,						For the year ended December 31,
	2023		2022		2021		2023		2022		2021
Residential	$	839.2	$	940.2	$	613.5		60.1		66.9		60.1
Commercial		340.1		398.6		242.1		29.4		32.4		29.1
Industrial		33.2		63.0		33.4		5.7		7.7		6.2
Other		9.1		8.7		3.8		—		—		—
Total Distribution		1,221.6		1,410.5		892.8		95.2		107.0		95.4

Transportation and Transmission		177.5		174.1		158.8		159.8		160.9		154.6

Total Regulated		1,399.1		1,584.6		1,051.6		255.0		267.9		250.0

Non-regulated Services (a)		85.1		84.5		73.3		—		—		—

Total Revenue and Quantities Sold	$	1,484.2	$	1,669.1	$	1,124.9		255.0		267.9		250.0

Revenue (in thousands) Quantities Sold and Transported (Dth)
For the year ended December 31, For the year ended December 31,
2021 2020 2019 2021 2020 2019
Residential $ 613,475 $ 527,518 $ 551,701 60,080,805 61,962,171 66,956,080
Commercial 242,115 193,017 212,229 29,091,657 28,784,319 32,241,441
Industrial 33,368 24,014 24,832 6,260,235 6,881,354 6,548,023
Other 3,816 582 (1,361) — — —
Total Distribution 892,774 745,131 787,401 95,432,697 97,627,844 105,745,544
Transportation and Transmission 158,836 155,506 144,710 154,570,280 149,062,476 153,101,264
Total Regulated 1,051,610 900,637 932,111 250,002,977 246,690,320 258,846,808
Non-regulated Services (a)
73,255 74,033 77,919 — — —
Total Revenue and Quantities Sold $ 1,124,865 $ 974,670 $ 1,010,030 250,002,977 246,690,320 258,846,808

(a)

~~____________________~~

~~(a)~~ Includes Black Hills Energy Services and non-regulated services under the Service Guard Comfort Plan, Tech Services and HomeServe.


	Revenue (in millions)						Quantities Sold and Transported (Dth in millions)
	For the year ended December 31,						For the year ended December 31,
	2023		2022		2021		2023		2022		2021
Arkansas Gas	$	268.9	$	311.3	$	218.5		30.2		32.3		31.5
Colorado Gas		313.6		320.9		208.0		32.8		34.3		32.3
Iowa Gas		213.6		283.9		171.7		37.9		40.9		38.0
Kansas Gas		155.6		191.4		121.6		35.5		38.6		34.5
Nebraska Gas		366.1		384.8		273.4		82.2		85.1		81.0
Wyoming Gas		166.4		176.8		131.7		36.4		36.7		32.7
Total Revenue and Quantities Sold	$	1,484.2	$	1,669.1	$	1,124.9		255.0		267.9		250.0

Table of Contents


	For the year ended December 31,
	2023			2022			2021
Heating Degree Days	Actual		Variance From Normal	Actual		Variance From Normal	Actual		Variance From Normal
Arkansas Gas (a)		3,197	(17)%		3,844	2%		3,565	(12)%
Colorado Gas		5,916	(4)%		6,325	4%		5,866	(11)%
Iowa Gas		5,921	(12)%		7,037	7%		6,239	(8)%
Kansas Gas (a)		4,387	(8)%		4,968	7%		4,508	(8)%
Nebraska Gas		5,579	(8)%		6,220	4%		5,599	(9)%
Wyoming Gas		7,385	8%		7,644	12%		7,074	(7)%
Combined (b)		6,006	(4)%		6,536	5%		5,948	(8)%

(a)

Revenue (in thousands) Quantities Sold and Transported (Dth)
For the year ended December 31, For the year ended December 31,
2021 2020 2019 2021 2020 2019
Arkansas $ 218,497 $ 184,849 $ 185,201 31,478,303 28,572,621 30,496,243
Colorado 208,019 186,085 199,369 32,247,042 32,077,083 33,908,529
Iowa 171,673 137,982 151,619 38,022,801 36,824,548 41,795,729
Kansas 121,603 101,118 105,906 34,475,799 33,732,897 32,650,854
Nebraska 273,361 246,381 255,622 81,035,572 80,202,783 81,481,192
Wyoming 131,712 118,255 112,313 32,743,460 35,280,388 38,514,261
Total Revenue and Quantities Sold $ 1,124,865 $ 974,670 $ 1,010,030 250,002,977 246,690,320 258,846,808

For the year ended December 31,
2021 2020 2019
Heating Degree Days Actual Variance From Normal Actual Variance From Normal Actual Variance From Normal
Arkansas (a)
3,565 (12)% 3,442 (15)% 3,897 (4)%
Colorado 5,866 (11)% 6,068 (8)% 6,672 1%
Iowa 6,239 (8)% 6,504 (4)% 7,200 6%
Kansas (a)
4,508 (8)% 4,648 (5)% 5,190 6%
Nebraska 5,599 (9)% 5,853 (5)% 6,578 7%
Wyoming 7,074 (7)% 7,289 (4)% 8,010 7%
Combined (b)
5,948 (8)% 6,038 (6)% 6,840 5%

~~____________________~~

~~(a)~~ Arkansas and Kansas have weather normalization mechanisms that mitigate the weather impact on Gas Utility margins.

(b)

Heating degree days are calculated based on a weighted average of total customers by state excluding Kansas due to its weather normalization mechanism. Arkansas Gas is partially excluded based on the weather normalization mechanism in effect from November through April.

Table of Contents

Corporate and Other

Corporate and Other operating results, including inter-segment eliminations, for the years ended December 31 were as ~~follows (in thousands):~~

(in thousands) 2021 2020 2021 vs 2020 Variance 2019 2020 vs 2019 Variance
Operating income (loss) $ (4,404) $ 1,440 $ (5,844) $ (1,606) $ 3,046

follows:

~~2021~~


(in millions)	2023			2022			2023 vs 2022 Variance			2021			2022 vs 2021 Variance
Operating (loss)	$	(4.9	)	$	(3.3	)	$	(1.6	)	$	(4.5	)	$	1.2

2023 Compared to ~~2020~~

2022

~~The variance in~~

Operating ~~income~~ (loss) was ~~primarily due~~comparable to athe prior ~~year favorable true-up of employee costs which was allocated to our subsidiaries in the current~~ year. ~~This allocation was offset in our business segments and had no impact to consolidated results.~~

~~2020 Compared to 2019~~

~~The variance in Operating income (loss) was primarily due to a 2020 unallocated favorable true-up of employee costs.~~

~~Table of Contents~~

Consolidated Interest Expense, ~~Impairment of Investment,~~ Other Income (Expense) and Income Tax ~~Benefit~~ (Expense)

(in thousands) 2021 2020 2021 vs 2020 Variance 2019 2020 vs 2019 Variance
Interest expense, net $ (152,404) $ (143,470) $ (8,934) $ (137,659) $ (5,811)
Impairment of investment — (6,859) 6,859 (19,741) 12,882
Other income (expense), net 1,404 (2,293) 3,697 (5,740) 3,447
Income tax benefit (expense) (7,169) (32,918) 25,749 (29,580) (3,338)


(in millions)	2023			2022			2023 vs 2022 Variance			2021			2022 vs 2021 Variance
Interest expense, net	$	(167.9	)	$	(161.0	)	$	(6.9	)	$	(152.4	)	$	(8.6	)
Other income (expense), net		(3.2	)		1.8			(5.0	)		1.4			0.4
Income tax (expense)		(25.6	)		(25.2	)		(0.4	)		(7.2	)		(18.0	)

~~2021~~

2023 Compared to ~~2020~~

2022

Interest expense, net

~~The increase in Interest expense, net was~~ increased due to higher ~~debt balances driven by the August 2021 senior unsecured notes and February 2021 term loan,~~interest rates partially offset by ~~lower~~increased interest ~~rates.~~

~~Impairment of investment~~

~~In the prior year, we recorded a pre-tax non-cash write-down of $6.9 million in our investment in equity securities of a privately held oil~~income on higher cash and ~~gas company. The impairment was triggered by continued adverse changes in future natural gas prices and liquidity concerns at the privately held oil and gas company.~~

cash equivalents balances.

Other ~~income~~ (expense), net

~~The variance in Other income (expense), net was~~ increased primarily due to ~~lower~~higher benefit plan non-service ~~pension~~ costs driven by ~~a lower~~higher discount ~~rate, lower~~rates and higher costs for our non-qualified ~~benefit plans~~deferred compensation plan which were driven by market ~~performance and recognition of death benefits from Company-owned life insurance.~~

performance.

Income tax ~~benefit~~ (expense)

~~For the year ended December 31, 2021,~~ and the effective tax rate ~~was 2.8% compared~~were comparable to ~~11.9%~~the same period in ~~2020.~~the prior year. The ~~lower~~ effective tax rate iswas 8.5% for both 2023 and 2022. The effective tax rate was comparable primarily due to ~~$10~~a $8.2 million tax benefit from a current year Nebraska income tax rate decrease offset by $6.5 million of ~~increased~~lower tax benefits from ~~Colorado Electric~~various current and ~~Nebraska Gas TCJA-related bill credits to customers (which is offset by reduced revenue), $6.6~~prior year state tax rate changes and $3.6 million of ~~increased flow-through tax benefits related to repairs and gain deferral, $4.6 million~~lower wind PTCs resulting from the March 2023 sale of increased tax benefits from federal production tax credits associated with new wind assets, $2.9 million of increased tax benefits from amortization of excess deferred income taxes and $2.6 million from various statutory rate changes. These current year tax benefits were greater than prior year tax benefits from one-time research and development tax credits and the reversal of accrued excess deferred income taxes as part of resolving the last of the Company’s open dockets seeking approval of its TCJA plans.Northern Iowa Windpower assets. See Note 15 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K for additional details.

~~2020 Compared to 2019~~

~~Interest expense, net~~

~~The increase in Interest expense, net was driven by higher debt balances partially offset by lower interest rates.~~

~~Impairment of investment~~

In 2020, we recorded a pre-tax non-cash write-down of $6.9 million in our investment in equity securities of a privately held oil and gas company, compared to a $20 million write-down in 2019. The impairments in both years were triggered by continued adverse natural gas prices and liquidity concerns at the privately held oil and gas company.

~~Other income (expense), net~~

The variance in Other income (expense), net was primarily due to the 2019 expensing of $5.4 million of development costs related to projects we no longer intend to construct which was partially offset by higher 2020 non-service defined benefit plan costs primarily driven by lower discount rates.

Table of Contents

~~Income tax benefit (expense)~~

For the year ended December 31, 2020, the effective tax rate was 11.9% compared to 12.2% in 2019. The lower effective tax rate is primarily due to increased tax benefits from federal production tax credits associated with new wind assets and one-time research and development tax credits partially offset by a 2019 tax benefit from a federal tax loss carry-back claim including interest. See ~~Note 15~~

~~of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K for additional details.~~

Liquidity and Capital Resources

OVERVIEW

Our company requires significant cash to support and grow our businesses. Our primary sources of cash are generated from our operating activities, ~~five-year~~ Revolving Credit Facility, CP Program, ATM and ability to access the public and private capital markets through debt and equity securities offerings when necessary. This cash is used for, among other things, working capital, capital expenditures, dividends, pension funding, investments in or acquisitions of assets and businesses, payment of debt obligations and redemption of outstanding debt and equity securities when required or financially appropriate.

We experience significant cash requirements during peak months of the winter heating season due to higher natural gas consumption, during periods of high natural gas prices, and during the construction season, which typically peaks in spring and summer.

We believe that our cash on hand, operating cash flows, existing borrowing capacity and ability to complete new debt and equity financings, taken in their entirety, provide sufficient capital resources to fund our ongoing operating requirements, regulatory liabilities, debt maturities, anticipated dividends, and anticipated capital expenditures discussed in this section.

~~In response to Winter Storm Uri, we took steps to maintain adequate liquidity to operate our businesses and fund our capital investment program as discussed in the~~ ~~Recent Developments~~

~~section above.~~

The following table provides an informational summary of our ~~financial position~~liquidity and capital structure as of December 31 (dollars in ~~thousands)~~millions):


	2023			2022
Cash and cash equivalents	$	86.6		$	21.4
Available capacity under Revolving Credit Facility and CP Program (a)		746.3			189.8
Available liquidity	$	832.9		$	211.2

Capital structure
Short-term debt	$	600.0		$	1,060.6
Long-term debt		3,801.2			3,607.3
Total debt		4,401.2			4,667.9
Total stockholders' equity (excludes non-controlling interest)		3,215.3			2,994.9
Total capitalization	$	7,616.5		$	7,662.8

Debt to capitalization		57.8	%		60.9	%
Net debt to capitalization (b)		57.3	%		60.8	%
Long-term debt to total debt		86.4	%		77.3	%

(a)

Available capacity under Revolving Credit Facility and CP Program represents $750 million of total borrowing capacity less outstanding borrowings and letters of credit. See Note 8 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K for more information.

Financial Position Summary 2021 2020
Cash and cash equivalents $ 8,921 $ 6,356
Restricted cash and equivalents $ 4,889 $ 4,383
Notes payable $ 420,180 $ 234,040
Current maturities of long-term debt $ — $ 8,436
Long-term debt (a)
$ 4,126,923 $ 3,528,100
Stockholders’ equity $ 2,787,094 $ 2,561,385
Ratios
Long-term debt ratio 60 % 58 %
Total debt ratio 62 % 60 %

(b)

~~____________________~~

~~(a) Carrying value of long-term~~Net debt to capitalization ratio is net of ~~deferred financing costs.~~Cash and cash equivalents for both Total debt and Total capitalization.

CASH FLOW ACTIVITIES

The following ~~table summarizes~~tables summarize our cash flows for the years ended December 31 (in ~~thousands)~~millions):

Operating Activities:


	2023			2022			2023 vs 2022			2021			2022 vs 2021
Net income	$	276.0		$	270.8		$	5.2		$	251.2		$	19.6
Non-cash adjustments to Net income		313.5			295.7			17.8			276.6			19.1
Total earnings		589.5			566.5			23.0			527.8			38.7
Changes in certain operating assets and liabilities:
Accounts receivable and other current assets		255.9			(259.9	)		515.8			(78.9	)		(181.0	)
Accounts payable and accrued liabilities		(109.9	)		89.4			(199.3	)		10.6			78.8
Regulatory assets and liabilities		236.8			203.9			32.9			(524.2	)		728.1
Net inflow (outflow) from changes in certain operating assets and liabilities		382.8			33.4			349.4			(592.5	)		625.9
Other operating activities		(27.9	)		(15.1	)		(12.8	)		0.1			(15.2	)
Net cash provided by (used in) operating activities	$	944.4		$	584.8		$	359.6		$	(64.6	)	$	649.4

2021 2020 2019
Cash provided by (used in)
Operating activities $ (64,565) $ 541,863 $ 505,513
Investing activities $ (664,230) $ (761,664) $ (816,210)
Financing activities $ 731,866 $ 216,882 $ 300,210

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~~2021~~

2023 Compared to ~~2020~~

2022

~~Operating Activities:~~

Net cash ~~used in~~provided by operating activities was ~~$606~~$359.6 million higher ~~than in 2020. The variance to the prior year~~which was ~~primarily~~ attributable to:

•~~Cash~~

Total earnings ~~(income from continuing operations~~(net income plus non-cash adjustments) were ~~$21~~$23.0 million ~~lower~~higher than prior year ~~driven~~ primarily ~~by negative impacts from the unplanned outage at Wygen I, lower~~as a result of increased Electric and Gas Utility ~~margin from Winter Storm Uri~~margins due to new rates and ~~unfavorable weather,~~increased rider revenues partially offset by higher operating expenses and higher interest ~~expenses;~~expense.

•

Net ~~outflows~~inflows from changes in certain operating assets and liabilities were ~~$593~~$349.4 million higher than prior year, primarily attributable to:

Cash inflows increased by approximately $515.8 million as a result of changes in accounts receivable and other current assets primarily due to higher collections on pass-through revenues and lower natural gas in storage inventories driven by fluctuations in commodity prices and timing of injections and withdrawals;

•o

Cash outflows increased by approximately ~~$508~~$199.3 million as a result of decreases in accounts payable and other current liabilities primarily driven by fluctuations in commodity prices, payment timing of natural gas and power purchases and changes in other working capital requirements; and

Cash inflows increased by approximately $32.9 million as a result of changes in our regulatory assets and liabilities primarily due to higher recoveries of deferred gas and fuel cost adjustments driven by ~~incremental fuel, purchased power and natural gas costs~~fluctuations in commodity prices.

•

Cash outflows increased $12.8 million from other operating activities primarily due to ~~Winter Storm Uri;~~higher costs from cloud computing arrangements.

Investing Activities:

•


	2023			2022			2023 vs 2022		2021			2022 vs 2021
Capital expenditures	$	(555.6	)	$	(604.4	)	$	48.8	$	(677.5	)	$	73.1
Other investing activities		18.9			0.5			18.4		13.3			(12.8	)
Net cash (used in) investing activities	$	(536.7	)	$	(603.9	)	$	67.2	$	(664.2	)	$	60.3

Cash inflows decreased by approximately $71 million primarily as a result of changes in accounts receivable and other current assets driven by decreased collections of accounts receivable and increased purchases of natural gas in storage;

•~~Cash inflows decreased by approximately $14 million as a result of changes in accounts payable and other current liabilities driven by payment timing related~~2023 Compared to ~~payroll taxes;~~2022

•~~Cash outflows decreased by $13 million due to pension contributions made in the prior year; and~~

•~~Cash inflows decreased $4.5 million for other operating activities.~~

~~Investing Activities:~~

Net cash used in investing activities was ~~$97~~$67.2 million lower ~~than in 2020. This variance to the prior year~~which was ~~primarily~~ attributable to:

•~~Capital~~

Cash outflows from capital expenditures (which are net of ~~approximately $677~~$33.8 million contributions in ~~2021 compared to $767~~aid of construction) decreased $48.8 million ~~in 2020. Lower current year expenditures are driven by~~as a result of lower programmatic safety, reliability and integrity spending at our Gas ~~Utilities segments~~ and ~~the prior year Corriedale wind project at our~~ Electric Utilities ~~segment;~~ and higher receipts related to contributions in aid of construction driven by strategic projects in Wyoming;

•

Cash inflows increased ~~$7.5~~$18.4 million for other investing activities primarily ~~driven by~~due to proceeds from the ~~sales~~sale of ~~transmission~~Northern Iowa Windpower assets and ~~facilities, none~~the strategic sale of ~~which were individually significant.~~land in Wyoming.

Financing Activities:


	2023			2022			2023 vs 2022			2021			2022 vs 2021
Dividends paid on common stock	$	(168.1	)	$	(156.7	)	$	(11.4	)	$	(145.0	)	$	(11.7	)
Common stock issued		118.3			90.1			28.2			119.0			(28.9	)
Short-term and long-term debt (repayments), net		(260.6	)		115.4			(376.0	)		777.7			(662.3	)
Distributions to non-controlling interests		(18.3	)		(17.4	)		(0.9	)		(15.7	)		(1.7	)
Other financing activities		(13.0	)		0.9			(13.9	)		(4.1	)		5.0
Net cash provided by (used in) financing activities	$	(341.7	)	$	32.3		$	(374.0	)	$	731.9		$	(699.6	)

2023 Compared to 2022

Net cash ~~provided by~~used in financing activities was ~~$515~~$374.0 million higher ~~than in 2020. This variance to the prior year~~which was primarily attributable to:

•~~Cash inflows increased $502 million due to long and short-term borrowings in excess of repayments;~~

•~~Cash inflows increased $20 million due to higher issuances of common stock;~~

•Cash outflows increased ~~$10~~$11.4 million due to increased dividends paid on common stock; ~~and~~

•

Cash inflows increased $28.2 million due to higher issuances of common stock;

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•

Net outflows from changes in short-term and long-term debt (repayments) borrowings increased $376.0 million due to:

Cash outflows ~~decreased by $3.0~~increased $651.0 million ~~for other financing activities.~~

~~CAPITAL RESOURCES~~

~~Short-term Debt~~

as a result of net repayment activity under our Revolving Credit Facility and CP ~~Program~~Program;

Cash outflow of $525.0 million due to repayment of our senior unsecured notes on their November 30, 2023 maturity date; and

Cash inflow of $800.0 million from the March 7, 2023 and September 15, 2023 debt offerings.

•

Cash outflows increased by $13.9 million for other financing activities primarily due to financing costs from the March 7, 2023 and September 15, 2023 debt offerings.

CAPITAL RESOURCES

Shelf Registration Statement

We maintain an effective shelf registration statement with the SEC under which we may issue, from time to time, an unspecified amount of senior debt securities, subordinate debt securities, common stock, preferred stock, warrants and other securities. See Note 8 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K for recent updates regarding our shelf registration statement.

Short-term Debt

We have a $750 million Revolving Credit Facility that matures on July 19, 2026, with two one-year extension options (subject to consent from lenders). This facility includes an accordion feature that allows us to increase total commitments up to $1.0 billion with the consent of the administrative agent, the issuing agents and each bank increasing or providing a new commitment. We also have a $750 million, unsecured CP Program that is backstopped by the Revolving Credit Facility. Amounts outstanding under the Revolving Credit Facility and the CP Program, either individually or in the aggregate, cannot exceed $750 million.

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The Revolving Credit Facility prohibits us from paying cash dividends if a default or an event of default exists prior to, or would result after, paying a dividend. Although these contractual restrictions exist, we do not anticipate triggering any default measures or restrictions.

The Revolving Credit Facility contains cross-default provisions that could result in a default under such agreements if BHC or its material subsidiaries failed to 1) make timely payments of debt obligations; or 2) triggered other default provisions under any debt agreement totaling, in the aggregate principal amount of $50 million or more that permit the acceleration of debt maturities or mandatory debt prepayment.

~~Our Revolving Credit Facility and CP Program had the following borrowings, outstanding letters of credit, and available capacity (in millions):~~

Current Short-term borrowings at
Letters of Credit (a) at
Available Capacity at
Credit Facility Expiration Capacity December 31, 2021 December 31, 2021 December 31, 2021
Revolving Credit Facility and CP Program July 19, 2026 $ 750 $ 420 $ 27 $ 303

~~____________________~~

~~(a) Letters of credit are off-balance sheet commitments that reduce the borrowing capacity available on our corporate Revolving Credit. For more information on these letters of credit, see~~ ~~Note 8~~

~~of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K.~~

~~The weighted average interest rate on short-term borrowings at December 31, 2021 was 0.30%. Short-term borrowing activity for the year ended December 31, 2021 was:~~


	~~(dollars in millions)~~
~~Maximum amount outstanding (based on daily outstanding balances)~~	$	~~440~~

~~Average amount outstanding (based on daily outstanding balances)~~	$	~~258~~

~~Weighted average interest rate~~	~~0.22~~		%

See Note 8 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K for more information on our Revolving Credit Facility and CP Program.

~~Term Loan~~

~~See~~ ~~Note 8~~

~~of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K for more information related to our term loan.~~

Utility Money Pool

As a utility holding company, we are required to establish a cash management program to address lending and borrowing activities between our utilities and the Company. We have established utility money pool agreements which address these requirements. These agreements are on file with the FERC and appropriate state regulators. Under the utility money pool agreements, our utilities may, at their option, borrow and extend short-term loans to ~~our other utilities via a~~the utility money pool at market-based rates. While the utility money pool may borrow funds from the Company (as ultimate parent company), the money pool arrangement does not allow loans from our utility subsidiaries to the Company (as ultimate parent company) or to non-regulated affiliates.

Long-term Debt

~~Our Long-term debt and associated interest payments due by year are shown below (in thousands).~~ For ~~more~~ information on our long-term debt, see Note 8 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K.

Payments Due by Period
2022 2023 2024 2025 2026 Thereafter Total
Principal payments on Long-term debt including current maturities (a)
$ — $ 525,000 $ 600,000 $ — $ 300,000 $ 2,735,000 $ 4,160,000
Interest payments on Long-term debt (a)
147,720 147,772 125,460 119,238 113,313 1,095,879 1,749,382

~~____________________~~

~~(a)~~Long-term debt amounts do not include deferred financing costs or discounts or premiums on debt. Estimated interest payments on variable rate debt are calculated by utilizing the applicable rates as of December 31, 2021.

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Covenant Requirements

The Revolving Credit Facility and Wyoming Electric’s financing agreements contain covenant requirements. We were in compliance with these covenants as of December 31, ~~2021.~~2023. See additional information in Note 8 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K.

~~Equity~~

~~Shelf Registration~~

We have a shelf registration statement on file with the SEC under which we may issue, from time to time, senior debt securities, subordinated debt securities, common stock, preferred stock, warrants and other securities. Although the shelf registration statement does not limit our issuance capacity, our ability to issue securities is limited to the authority granted by our BoardTable of Directors, certain covenants in our financing arrangements and restrictions imposed by federal and state regulatory authorities. The shelf registration expires in August 2023. Our articles of incorporation authorize the issuance of 100 million shares of common stock and 25 million shares of preferred stock. As of December 31, 2021, we had approximately 65 million shares of common stock outstanding and no shares of preferred stock outstanding.Contents

Equity

~~ATM~~

Our ATM allows us to sell shares of our common stock with an aggregate value of up to $400 million. The shares may be offered from time to time pursuant to a sales agreement dated August 4, 2020. Shares of common stock are offered pursuant to our shelf registration statement filed with the SEC. During the twelve months ended December 31, 2021, we issued a total of 1,812,197 shares of common stock under the ATM for $119 million, net of $1.1 million in issuance costs.

For ~~additional~~ information regarding equity, see Note 8 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K.

Future Financing Plans

We will continue to assess debt and equity needs to support our capital investment plans and other ~~key~~ strategic objectives. ~~In 2022, we expect~~We plan to fund our capital plan and strategic objectives by using cash generated from operating activities and various financing alternatives, which could include our Revolving Credit Facility, ~~and~~our CP Program, ~~and issuing $100 million to $120 million~~debt offerings, the issuance of common stock under ~~the ATM.~~

our ATM program or in an opportunistic block trade. We also plan to re-finance our $600 million, 1.0375%, senior unsecured notes due August 2024, at or before maturity date.

CREDIT RATINGS

Financing for operational needs and capital expenditure requirements, not satisfied by operating cash flows, depends upon the cost and availability of external funds through both short and long-term financing. In order to operate and grow our business, we need to consistently maintain the ability to raise capital on favorable terms. Access to funds is dependent upon factors such as general economic and capital market conditions, regulatory authorizations and policies, the Company’s credit ratings, cash flows from routine operations and the credit ratings of counterparties. After assessing the current operating performance, liquidity and credit ratings of the Company, management believes that the Company will have access to the capital markets at prevailing market rates for companies with comparable credit ratings. We note that credit ratings are not recommendations to buy, sell, or hold securities and may be subject to revision or withdrawal at any time by the assigning rating agency. Each rating should be evaluated independently of any other rating.

The following table represents the credit ratings, outlook and risk profile of BHC at December 31, ~~2021:~~

2023:


Rating Agency	Senior Unsecured Rating	Outlook
S&P (a)	BBB+	Stable
Moody’s (b)	Baa2	Stable
Fitch (c)	BBB+	Stable

~~____________________~~

(a)

~~(a)~~ On ~~October 20, 2021,~~February 17, 2023, S&P reported BBB+ rating and maintained a Stable outlook.

(b)

On December ~~20, 2021, Moody’s~~21, 2023, Moody's reported our Baa2 rating and maintained a Stable outlook.

(c)

On ~~September 17, 2021,~~January 26, 2024, Fitch reported BBB+ rating and ~~maintained~~revised to a ~~Stable~~Negative outlook.

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Certain fees and interest rates under our Revolving Credit Facility are based on our credit ratings at all three rating agencies. If all of our ratings are at the same level, or if two of our ratings are the same level and one differs, these fees and interest rates will be based on the ratings that are at the same level. If all of our ratings are at different levels, these fees and interest rates will be based on the middle level. Currently, our Fitch and S&P ratings are at the same level, and our Moody’s rating is one level below. Therefore, if Fitch or S&P downgrades our senior unsecured debt, we will be required to pay higher fees and interest rates under our Revolving Credit Facility.

The following table represents the credit ratings of South Dakota Electric at December 31, ~~2021:~~

2023:


Rating Agency	Senior Secured Rating
S&P (a)	A
Fitch (b)	A

~~____________________~~

(a)

~~(a)~~ On ~~July 1, 2021,~~February 17, 2023, S&P reported A ~~rating.~~rating

(b)

On ~~September 17, 2021,~~January 26, 2024, Fitch reported A ~~rating.~~rating

We dohave not ~~have~~had any ~~trigger~~triggering events (i.e., an acceleration of repayment of outstanding indebtedness, an increase in interest costs, or the posting of additional cash collateral) tied to our stock price and have not executed any transactions that require us to issue equity based on our credit ratings.

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CAPITAL REQUIREMENTS

Capital Expenditures

Capital expenditures are a substantial portion of our cash requirements each year and we continue to forecast a robust capital expenditure program during the next five years. See above in Key Elements of our Business Strategy for forecasted capital expenditure requirements. A significant portion of our capital expenditures are for safety, reliability and integrity of our system and is included in utility rate base and eligible for recovery from our utility customers with regulatory approval. Those capital expenditures also earn a rate of return authorized by the commissions in the jurisdictions in which we operate.

Our historical capital expenditures ~~for~~by reportable segment are shown in Note 16 of the ~~three years ended December 31 were as follows (in thousands):~~

2021 2020 2019
Capital Expenditures By Segment (a) :
Electric Utilities $ 285,770 $ 288,683 $ 316,687
Gas Utilities 383,320 449,209 512,366
Corporate and Other 10,500 17,500 20,702
Total capital expenditures $ 679,590 $ 755,392 $ 849,755

~~____________________~~

~~(a) Includes accruals for property, plant and equipment as disclosed as supplemental cash flow information in the~~ ~~Consolidated Statements of Cash Flows~~ ~~in the~~Notes to Consolidated Financial Statements in this Annual Report on Form 10-K.

Repayments of Indebtedness

For information relating to repayments of our short- and long-term debt and associated interest payments, see ~~the~~ ~~Capital Resources~~ ~~section above and~~ Note 8 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K.

Unconditional Purchase Obligations

We have unconditional purchase obligations which include the energy and capacity costs associated with our PPAs, transmission services agreements, and natural gas capacity, transportation and storage agreements. Additionally, our Gas Utilities have commitments to purchase physical quantities of natural gas under contracts indexed to various forward natural gas price curves. For additional information. see Note 3 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K.

Defined Benefit Pension Plan

We have one defined benefit pension plan, the Black Hills Retirement Plan (Pension Plan). The unfunded status of the Pension Plan is defined as the amount the projected benefit obligation exceeds the plan assets. The unfunded status of the ~~plan~~Pension Plan is ~~$20~~$39.4 million as of December 31, ~~2021,~~2023, compared to ~~$40~~$35.2 million as of December 31, ~~2020. While we~~2022. We do not have required contributions, however, we expect to make ~~$3.9~~$2.3 million in contributions to our Pension Plan in ~~2022.~~2024. See further information in Note 13 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K.

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Common Stock Dividends

Future cash dividends, if any, will be dependent on our results of operations, financial position, cash flows, reinvestment opportunities and other factors, and will be evaluated and approved by our Board of Directors.

Additionally, there are certain statutory limitations that could affect future cash dividends paid. Federal law places limits on the ability of public utilities within a holding company structure to declare dividends. Specifically, under the Federal Power Act, a public utility may not pay dividends from any funds properly included in a capital account. The utility subsidiaries’ dividends may be limited directly or indirectly by state regulatory commissions or bond indenture covenants. See additional information in Note 8 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K.

On January 26, ~~2022,~~2024, our Board of Directors declared a quarterly dividend of ~~$0.595~~$0.65 per share, equivalent to an annual dividend rate of ~~$2.38~~$2.60 per share. The table below provides our dividends paid (in ~~thousands)~~millions), dividend payout ratio and dividends paid per share for the three years ended December 31:

2021 2020 2019
Common Stock Dividends Paid $ 145,023 $ 135,439 $ 124,647
Dividend Payout Ratio 61 % 60 % 63 %
Dividends Per Share $ 2.29 $ 2.17 $ 2.05


	2023			2022			2021
Common Stock Dividends Paid	$	168.1		$	156.7		$	145.0
Dividend Payout Ratio		64	%		61	%		61	%
Dividends Per Share	$	2.50		$	2.41		$	2.29

Our three-year compound annualized dividend growth rate was ~~5.9%~~4.8%.

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Collateral Requirements

Our Utilities maintain wholesale commodity contracts for the purchases and sales of electricity and natural gas which have performance assurance provisions that allow the counterparty to require collateral postings under certain conditions, including when requested on a reasonable basis due to a deterioration in our financial condition or nonperformance. A significant downgrade in our credit ratings, such as a downgrade to a level below investment grade, could result in counterparties requiring collateral postings under such adequate assurance provisions. The amount of credit support that we may be required to provide at any point in the future is dependent on the amount of the initial transaction, changes in the market price, open positions and the amounts owed by or to the counterparty. At December 31, ~~2021,~~2023, we had sufficient liquidity to cover collateral that could be required to be posted under these contracts. The cash collateral we were required to post at December 31, ~~2021~~2023 was not material.

See
Note 9

of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K.

Guarantees

We provide various guarantees, which represent off-balance sheet commitments, supporting certain of our subsidiaries under specified agreements or transactions. For more information on these guarantees, see Note 3 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K.

Critical Accounting Estimates

We prepare our consolidated financial statements in conformity with GAAP. In many cases, the accounting treatment of a particular transaction is specifically dictated by GAAP and does not require management’s judgment in application. There are also areas which require management’s judgment in selecting among available GAAP alternatives. We are required to make certain estimates, judgments and assumptions that we believe are reasonable based upon the information available. We continue to closely monitor the ~~impacts of COVID-19~~macroeconomic environment and ~~Winter Storm Uri~~related impacts on our critical accounting estimates including, but not limited to, ~~collectibility~~collectability of customer receivables, recoverability of regulatory assets, impairment risk of goodwill and long-lived assets, ~~valuation of pension assets and liabilities~~ and contingent liabilities. These estimates and assumptions affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the periods presented. Actual results may differ from our estimates and to the extent there are material differences between these estimates, judgments or assumptions and actual results, our financial statements will be affected. We believe the following accounting estimates are the most critical in understanding and evaluating our reported financial results. We have reviewed these critical accounting estimates and related disclosures with our Audit Committee.

The following discussion of our critical accounting estimates should be read in conjunction with Note 1, “Business Description and Significant Accounting Policies” of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K.

~~Table of Contents~~Regulation

~~Regulation~~

Our regulated Electric and Gas Utilities are subject to cost-of-service regulation and earnings oversight from federal and state utility commissions. This regulatory treatment does not provide any assurance as to achievement of desired earnings levels. Our retail electric and gas utility rates are regulated on a state-by-state basis by the relevant state regulatory commissions based on an analysis of our costs, as reviewed and approved in a regulatory proceeding. The rates that we are allowed to charge may or may not match our related costs and allowed return on invested capital at any given time.

Management continually assesses the probability of future recoveries associated with regulatory assets and future obligations associated with regulatory liabilities. Factors such as the current regulatory environment, recently issued rate orders and historical precedents are considered. As a result, we believe that the accounting prescribed under rate-based regulation remains appropriate and our regulatory assets are probable of recovery in current rates or in future rate proceedings.

To some degree, each of our Electric and Gas Utilities are permitted to recover certain costs (such as increased fuel and purchased power costs) outside of a base rate review. To the extent we are able to pass through such costs to our customers, and a state regulatory commission subsequently determines that such costs should not have been paid by the customers, we may be required to refund such costs.

As of December 31, ~~2021~~2023 and ~~2020,~~2022, we had total regulatory assets of ~~$797~~$480.1 million and ~~$278~~$653.0 million, respectively, and total regulatory liabilities of ~~$503~~$566.6 million and ~~$533~~$518.6 million, respectively. See Note 2 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K for further information.

Goodwill

We perform a goodwill impairment test on an annual basis or upon the occurrence of events or changes in circumstances that indicate that the asset might be impaired. Our annual goodwill impairment testing date is as of October 1, which aligns with our financial planning process.

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Accounting standards for testing goodwill for impairment require the application of either a qualitative or quantitative assessment to analyze whether or not goodwill has been impaired. Goodwill is tested for impairment at the reporting unit level. Under either the qualitative or quantitative assessment, the estimated fair value of a reporting unit is compared with its carrying amount, including goodwill. If the carrying amount exceeds fair value, then an impairment loss would be recognized in an amount equal to that excess, limited to the amount of goodwill allocated to that reporting unit.

Application of the goodwill impairment test requires judgment, including the identification of reporting units and determining the fair value of the reporting unit. We have determined that the reporting units for goodwill impairment testing are our operating segments, or components of an operating segment, that constitute a business for which discrete financial information is available and for which the ~~Chief Operating Decision Maker (CODM)~~CODM regularly reviews the operating results. We estimate the fair value of our reporting units using a combination of an income approach, which estimates fair value based on discounted future cash flows, and a market approach, which estimates fair value based on market comparables within the utility and energy industries. These valuations require significant judgments, including, but not limited to: 1) estimates of future cash flows, based on our internal five-year business plans and adjusted as appropriate for our view of market participant assumptions, with long range cash flows estimated using a terminal value calculation; 2) estimates of long-term growth rates for our businesses; 3) the determination of an appropriate weighted-average cost of capital or discount rate; and 4) the utilization of market information such as recent sales transactions for comparable assets within the utility and energy industries. Varying by reporting unit, weighted average cost of capital in the range of ~~4.9%~~6.9% to ~~5.1%~~7.3% and long-term growth rate projections of 1.75% were utilized in the goodwill impairment test performed as of October 1, ~~2021.~~2023. Although 1.75% was used for a long-term growth rate projection, the short-term projected growth rate is higher with planned recovery of capital investments through rider mechanisms and rate reviews. Under the market approach, we estimate fair value using multiples derived from comparable sales transactions and enterprise value to EBITDA for comparative peer companies for each respective reporting unit. These multiples are applied to operating data for each reporting unit to arrive at an indication of fair value. In addition, we add a reasonable control premium when calculating fair value utilizing the peer multiples, which is estimated as the premium that would be received in a sale in an orderly transaction between market participants.

The estimates and assumptions used in ~~the~~our impairment assessments are based on available market information and we believe they are reasonable. However, variations in any of the assumptions could result in materially different calculations of fair value and determinations of whether or not an impairment is indicated.

For the years ended December 31, ~~2021, 2020,~~2023, 2022, and ~~2019,~~2021, there were no impairment losses recorded. At December 31, ~~2021,~~2023, the fair value ~~substantially~~ exceeded the carrying value at all reporting units.

See ~~Table of Contents~~Item 1A - Risk Factors

~~Pension~~ and ~~Other Postretirement Benefits~~

~~As described in~~ Note 131 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K ~~we have one defined benefit pension plan, one defined post-retirement healthcare plan and several non-qualified retirement plans. A Master Trust holds the assets~~ for ~~the pension plan. A VEBA trust for the funded portion of the post-retirement healthcare plan has also been established.~~additional information.

Accounting for pension and other postretirement benefit obligations involves numerous assumptions, the most significant of which relate to the discount rates, healthcare cost trend rates, expected return on plan assets, compensation increases, retirement rates and mortality rates. The determination of our obligation and expenses for pension and other postretirement benefits is dependent on the assumptions determined by management and used by actuaries in calculating the amounts. Although we believe our assumptions are appropriate, significant differences in our actual experience or significant changes in our assumptions may materially affect our pension and other postretirement obligations and our future expense.

The 2022 pension benefit cost for our non-contributory funded pension plan is expected to be $2.2 million compared to $0.8 million in 2021. The increase in the expected 2022 pension benefit cost is driven primarily by lower expected asset returns and a higher discount rate.

~~The effect of hypothetical changes to selected assumptions on the pension and other postretirement benefit plans would be as follows in thousands of dollars:~~

~~December 31,~~

~~Assumptions~~

~~Percentage Change~~

~~2021~~

~~Increase/(Decrease)~~

~~PBO/APBO~~ ~~(a)~~

2022
Increase/(Decrease) Expense - Pretax

~~Pension~~

~~Discount rate~~ ~~(b)~~

~~+/- 0.5~~

~~(27,101)/29,688~~

~~(1,883)/2,389~~

~~Expected return on assets~~

~~+/- 0.5~~

~~N/A~~

~~(2,180)/2,180~~

~~OPEB~~

~~Discount rate~~ ~~(b)~~

~~+/- 0.5~~

~~(2,839)/3,097~~

~~47/107~~

~~Expected return on assets~~

~~+/- 0.5~~

~~N/A~~

~~(37)/37~~

~~____________________~~

~~(a) Projected benefit obligation (PBO) for the pension plan and accumulated postretirement benefit obligation (APBO) for OPEB plans.~~

~~(b) Impact on service cost, interest cost and amortization of gains or losses.~~

Income Taxes

The Company and its subsidiaries file consolidated federal income tax returns. Each entity records income taxes as if it were a separate taxpayer for both federal and state income tax purposes and consolidating adjustments are allocated to the subsidiaries based on separate company computations of taxable income or loss.

The Company uses the asset and liability method in accounting for income taxes. Under the asset and liability method, deferred income taxes are recognized at currently enacted income tax rates, to reflect the tax effect of temporary differences between the financial and tax basis of assets and liabilities as well as operating loss and tax credit carryforwards. Such temporary differences are the result of provisions in the income tax law that either require or permit certain items to be reported on the income tax return in a different period than they are reported in the financial statements.

In assessing the realization of deferred tax assets, management considers whether it is more likely than not that some portion or all of the deferred tax assets will not be realized and provides any necessary valuation allowances as required. If we determine that we will be unable to realize all or part of our deferred tax assets in the future, an adjustment to the deferred tax asset would be made in the period such determination was made. These adjustments may increase or decrease earnings. Although we believe our assumptions, judgments and estimates are reasonable, changes in tax laws or our interpretations of tax laws and the resolution of current and any future tax audits could significantly impact the amounts provided for income taxes in our consolidated financial statements.

See Note 15 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K for additional information.

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ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Our activities in the regulated and non-regulated energy ~~sectors~~industries expose us to a number of risks in the normal operations of our businesses. Depending on the activity, we are exposed to varying degrees of market risk and credit risk.

Market risk is the potential loss that may occur as a result of an adverse change in market price, rate or supply. We are exposed, but not limited to, the following market risks:

•

Commodity price risk associated with our retail natural gas services, wholesale electric power marketing activities and fuel procurement for several of our gas-fired generation assets. Market fluctuations may occur due to unpredictable factors such as the COVID-19 pandemic, weather ~~(Winter~~(e.g. Winter Storm Uri), geopolitical events, market speculation, recession, inflation, pipeline constraints, and other factors that may impact natural gas and electric energy supply and demand; and

•

Interest rate risk associated with future debt, including reduced access to liquidity during periods of extreme capital markets volatility, such as the 2008 financial crisis and the COVID-19 pandemic.

Credit risk is associated with financial loss resulting from non-performance of contractual obligations by a counterparty.

To manage and mitigate these identified risks, we have adopted the Black Hills Corporation Risk Policies and Procedures. The Black Hills Corporation Risk Policies and Procedures have been approved by our Executive Risk Committee. These policies relate to numerous matters including governance, control infrastructure, authorized commodities and trading instruments, prohibited activities and employee conduct. We report any issues or concerns pertaining to the Risk Policies and Procedures to the Audit Committee of our Board of Directors. The Executive Risk Committee, which includes senior level executives, meets at least quarterly and as necessary, to review our business and credit activities and to ensure that these activities are conducted within the authorized policies.

Commodity Price Risk

Electric and Gas Utilities

Our utilities have various provisions that allow them to pass the prudently-incurred cost of energy through to the customer. To the extent energy prices are higher or lower than amounts in our current billing rates, adjustments are made on a periodic basis to reflect billed amounts to match the actual energy cost we incurred. In Colorado, South Dakota and Wyoming, we have ECA or PCA provisions that adjust electric rates when energy costs are higher or lower than the costs included in our tariffs. In Arkansas, Colorado, Iowa, Kansas, Nebraska and Wyoming, we have GCA provisions that adjust natural gas rates when our natural gas costs are higher or lower than the energy cost included in our tariffs. These adjustments are subject to periodic prudence reviews by the state regulatory commissions.

If state regulatory commissions decide to discontinue these tariff-based adjustment mechanisms, or there are delays in the timing of recovery under these mechanisms, we may be more exposed to commodity price risk.

The operations of our utilities, including natural gas sold by our Gas Utilities and natural gas used by our Electric Utilities’ generation plants or those plants under PPAs where our Electric Utilities must provide the generation fuel (tolling agreements), expose our utility customers to natural gas price volatility. Therefore, as allowed or required by state regulatory commissions, we have entered into commission-approved hedging programs utilizing natural gas futures, options, over-the-counter swaps and basis swaps to reduce our customers’ underlying exposure to these fluctuations.

For our regulated Utilities’ hedging plans, unrealized and realized gains and losses, as well as option premiums and commissions on these transactions are recorded as Regulatory assets or Regulatory liabilities in the accompanying Consolidated Balance Sheets in accordance with the state utility commission guidelines. When the related costs are recovered through our rates, the hedging activity is recognized in the Consolidated Statements of Income. See additional information in Note 9 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K.

Wholesale Power

We periodically have wholesale power purchase and sale contracts used to manage purchased power costs and load requirements associated with serving our electric customers that are considered derivative instruments and do not qualify for the normal purchase and normal sales exception for derivative accounting. Changes in the fair value of these commodity derivatives are recognized in the Consolidated Statements of Income.

There is a potential risk ~~related to~~that our wholesale power sales ~~is the price risk arising from the sale of power that exceeds~~could exceed our current generating ~~capacity. These potential short positions can~~capacity, which may arise from unplanned plant outages or from unanticipated load demands. To manage such risk, we restrict wholesale off-system sales to amounts by which our anticipated generating capabilities and purchased power resources exceed our anticipated load requirements plus a required reserve margin.

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Black Hills Energy Services

To support our Choice Gas Program customers, we buy and sell natural gas at competitive prices by managing commodity price risk. As a result of these activities, this area of our business is exposed to risks associated with changes in the market price of natural gas. We manage our exposure to such risks using over-the-counter and exchange traded options and swaps with counterparties in anticipation of forecasted purchases and sales. A portion of our over-the-counter swaps have been designated as cash flow hedges to mitigate the commodity price risk associated with fixed price forward contracts to supply gas to our Choice Gas Program customers. The gain or loss on these designated derivatives is reported in AOCI in the accompanying Consolidated Balance Sheets and reclassified into earnings in the same period that the underlying hedged item is recognized in earnings.

At December 31, ~~2021~~2023 and ~~2020,~~2022, a 10% change in market prices for our derivative instruments would not materially impact pre-tax income, the fair values of our derivative assets and liabilities, or OCI.

See additional commodity risk and derivative information in Note 9 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K.

Interest Rate Risk

Periodically, we have engaged in activities to manage risks associated with changes in interest rates. We have utilized pay-fixed interest rate swap agreements to reduce exposure to interest rate fluctuations associated with floating rate debt obligations and anticipated debt refinancings. At December 31, ~~2021,~~2023, we had no interest rate swaps in place. Further details of past swap agreements are set forth in Note 9 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K.

At December 31, ~~2021, 91%~~2023, over 99% of our debt is fixed rate debt, which limits our exposure to variable interest rate fluctuations. A hypothetical 100 basis point increase in the benchmark rate on our variable rate debt would have increased annual pretax interest expense by approximately ~~$2.7~~$0.9 million and ~~$2.1~~$4.1 million for the years ended December 31, ~~2021~~2023 and ~~2020,~~2022, respectively. See Note 8 for further information on cash amounts outstanding under short- and long-term variable rate borrowings.

We are subject to interest rate risk associated with our pension and post-retirement benefit obligations. Changes in interest rates impact the liabilities associated with these benefit plans as well as the amount of income or expense recognized for these plans. Declines in the value of the plan assets could diminish the funded status of the pension plans and potentially increase the requirements to make cash contributions to these plans. See additional information in ~~Critical Accounting Estimates~~ in ~~Item 7~~ ~~and~~ Note 13 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K.

Credit Risk

We have adopted the Black Hills Corporation Credit Policy that establishes guidelines, controls and limits to manage and mitigate credit risk within risk tolerances established by the Board of Directors. We attempt to mitigate our credit exposure by conducting business primarily with high credit quality entities, setting tenor and credit limits commensurate with counterparty financial strength, obtaining master netting agreements and mitigating credit exposure with less creditworthy counterparties through parental guarantees, cash collateral requirements, letters of credit and other security agreements.

We perform ~~ongoing~~periodic credit evaluations of our customers and adjust credit limits based upon payment history and the customer’s current creditworthiness, as determined by review of their current credit information. We maintain a provision for estimated credit losses based upon historical experience, changes in current market conditions, expected losses and any specific customer collection issue that is identified. ~~Our credit exposure at December 31, 2021 was concentrated primarily among retail utility customers, investment grade companies, cooperative utilities and federal agencies.~~

See more information in Notes 1 and 9 of the Notes to Consolidated Financial Statements in this Annual Report on Form 10-K.

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ITEM 8.

FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

Management’s Report on Internal Control Over Financial Reporting

We are responsible for establishing and maintaining adequate internal control over financial reporting as defined in Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934, as amended. Our internal control over financial reporting is a process 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.

All internal control systems, no matter how well designed, have inherent limitations. Therefore, even those systems determined to be effective can provide only reasonable assurance with respect to financial statement preparation and presentation. Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness 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 the policies or procedures may deteriorate.

Under the supervision and with the participation of management, including our Chief Executive Officer and Chief Financial Officer, we conducted an evaluation of the effectiveness of our internal control over financial reporting as of December 31, ~~2021,~~2023, based on the criteria set forth in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission “COSO”. This evaluation included review of the documentation of controls, evaluation of the design effectiveness of controls, testing of the operating effectiveness of controls and a conclusion on this evaluation. Based on our evaluation, we have concluded that our internal control over financial reporting was effective as of December 31, ~~2021.~~2023.

Deloitte & Touche LLP, an independent registered public accounting firm, as auditors of Black Hills Corporation’s financial statements, has issued an attestation report on the effectiveness of Black Hills Corporation's internal control over financial reporting as of December 31, ~~2021.~~2023. Deloitte & Touche LLP's report on Black Hills Corporation's internal control over financial reporting is included herein.

Black Hills Corporation

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the shareholders and the Board of Directors of Black Hills Corporation

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Black Hills Corporation and subsidiaries (the "Company") as of December 31, ~~2021~~2023 and ~~2020,~~2022, the related consolidated statements of income, comprehensive income, ~~shareholders'~~ equity, and cash flows, for each of the three years in the period ended December 31, ~~2021,~~2023, and the related notes (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, ~~2021~~2023 and ~~2020,~~2022, and the results of its operations and its cash flows for each of the three years in the period ended December 31, ~~2021,~~2023, in conformity with accounting principles generally accepted in the United States of America.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company's internal control over financial reporting as of December 31, ~~2021,~~2023, based on criteria established in Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated February ~~15, 2022,~~14, 2024, expressed an unqualified opinion on the Company's internal control over financial reporting.

Basis for Opinion

These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on the Company's financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Regulatory Accounting -— Impact of Rate Regulation on the Financial Statements — Refer to Notes 1 and 2 to the Financial Statements.

Critical Audit Matter Description

The Company is subject to cost-of-service regulation and earnings oversight by state and federal utility commissions (collectively, the “Commissions”), which have jurisdiction over the Company’s electric rates in Colorado, Montana, South Dakota and Wyoming and natural gas rates in Arkansas, Colorado, Iowa, Kansas, Nebraska and Wyoming. Management has determined it meets the requirements under accounting principles generally accepted in the United States of America to prepare its financial statements applying the specialized rules to account for the effects of cost-based rate regulation. Accounting for the economics of rate regulation impacts multiple financial statement line items and disclosures, such as property, plant, and equipment; regulatory assets and liabilities; revenue; operating expenses; and income tax benefit (expense).

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Rates are regulated on a state-by-state basis by the relevant state regulatory commissions based on an analysis of the Company's costs, as reviewed and approved in a regulatory proceeding. Rate regulation is premised on the full recovery of prudently incurred costs and a reasonable rate of return on invested capital. Decisions to be made by the Commissions in the future will impact the accounting for regulated operations, including decisions about the amount of allowable costs and return on invested capital included in rates and any refunds that may be required. While the Company has indicated its regulatory assets are probable of recovery in current rates or in future proceedings, there is a risk that the Commissions will not judge all costs to have been prudently incurred or that the rate regulation process in which rates are determined will not always result in rates that produce a full recovery of costs and the return on invested capital.

We identified the impact of rate regulation as a critical audit matter due to the significant judgments made by management to support its assertions about impacted account balances and disclosures and the high degree of subjectivity involved in assessing the impact of future regulatory orders on the financial statements. Management judgments include assessing the likelihood of (1) recovery in future rates of incurred costs, and (2) a refund or future rate reduction to be provided to customers. Given the uncertainty of future decisions by the Commissions, auditing these judgments required specialized knowledge of accounting for rate regulation and the rate setting process due to its inherent complexities.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the uncertainty of future decisions by the Commissions included the following, among others:

•

We tested the effectiveness of management’s controls over the evaluation of the likelihood of (1) the recovery in future rates of costs incurred as property, plant, and equipment and deferred as regulatory assets, and (2) refunds or future reductions in rates that should be reported as regulatory liabilities. We tested the effectiveness of management’s controls over the initial recognition of amounts as property, plant, and equipment; regulatory assets or liabilities; and the monitoring and evaluation of regulatory developments that may affect the likelihood of recovering costs in future rates or of a future reduction in rates.

•

We read relevant regulatory orders issued by the Commissions, ~~procedural memorandums,~~ filings made by the Company, and other publicly available information, as appropriate, to assess the likelihood of recovery in future rates or of a future reduction in rates based on ~~precedence~~precedents of the Commissions’ treatment of similar costs under similar circumstances. We evaluated the external information and compared it to the Company’s recorded regulatory asset and liability balances for completeness and for any evidence that might contradict management’s assertions.

•

We obtained and evaluated an analysis from management regarding probability of recovery for regulatory assets or refund or future reduction in rates for regulatory liabilities not yet addressed in a regulatory order, as applicable, to assess management’s assertion that amounts are probable of recovery or of a future reduction in rates.

•

We inspected minutes of the board of directors to identify any evidence that may contradict management’s assertions regarding probability of recovery or refunds. We also inquired of management regarding current year rate filings and new regulatory assets or liabilities.

•

We evaluated the Company’s disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments.

/s/ DELOITTE & TOUCHE LLP

Minneapolis, Minnesota

February ~~15, 2022~~

14, 2024

We have served as the Company's auditor since 2002.

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the shareholders and the Board of Directors of Black Hills Corporation

Opinion on Internal Control over Financial Reporting

We have audited the internal control over financial reporting of Black Hills Corporation and subsidiaries (the “Company”) as of December 31, ~~2021,~~2023, based on criteria established in Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, ~~2021,~~2023, based on criteria established in Internal Control — Integrated Framework (2013) issued by COSO.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated financial statements as of and for the year ended December 31, ~~2021,~~2023, of the Company and our report dated February ~~15, 2022,~~14, 2024, expressed an unqualified opinion on those financial statements.

Basis for Opinion

The Company’s management is responsible 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 Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

Definition and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process 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. 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 its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness 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 the policies or procedures may deteriorate.

/s/ DELOITTE & TOUCHE LLP

Minneapolis, Minnesota

February ~~15, 2022~~

14, 2024

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BLACK HILLS CORPORATION

CONSOLIDATED STATEMENTS OF INCOME

Year ended December 31, 2021 December 31, 2020 December 31, 2019
(in thousands, except per share amounts)
Revenue $ 1,949,102 $ 1,696,941 $ 1,734,900
Operating expenses:
Fuel, purchased power and cost of natural gas sold 741,934 492,404 570,829
Operations and maintenance 501,690 495,404 495,994
Depreciation, depletion and amortization 235,953 224,457 209,120
Taxes - property and production 60,096 56,373 52,915
Total operating expenses 1,539,673 1,268,638 1,328,858
Operating income 409,429 428,303 406,042
Other income (expense):
Interest expense incurred net of amounts capitalized (including amortization of debt issuance costs, premiums and discounts) (154,112) (144,931) (139,291)
Interest income 1,708 1,461 1,632
Impairment of investment — (6,859) (19,741)
Other income (expense), net 1,404 (2,293) (5,740)
Total other income (expense) (151,000) (152,622) (163,140)
Income before income taxes 258,429 275,681 242,902
Income tax (expense) (7,169) (32,918) (29,580)
Net income 251,260 242,763 213,322
Net income attributable to non-controlling interest (14,516) (15,155) (14,012)
Net income available for common stock $ 236,744 $ 227,608 $ 199,310
Earnings per share of common stock:
Earnings per share, Basic $ 3.74 $ 3.65 $ 3.29
Earnings per share, Diluted $ 3.74 $ 3.65 $ 3.28
Weighted average common shares outstanding:
Basic 63,219 62,378 60,662
Diluted 63,325 62,439 60,798


	December 31, 2023			December 31, 2022			December 31, 2021
	(in millions, except per share amounts)
Revenue	$	2,331.3		$	2,551.8		$	1,949.1

Operating expenses:
Fuel, purchased power and cost of natural gas sold		982.9			1,230.6			741.9
Operations and maintenance		552.0			548.4			501.7
Depreciation and amortization		256.8			250.9			236.0
Taxes - property and production		66.9			66.7			60.1
Total operating expenses		1,858.6			2,096.6			1,539.7

Operating income		472.7			455.2			409.4

Other income (expense):
Interest expense incurred net of amounts capitalized		(180.0	)		(162.6	)		(154.1	)
Interest income		12.1			1.6			1.7
Other income (expense), net		(3.2	)		1.8			1.4
Total other income (expense)		(171.1	)		(159.2	)		(151.0	)
Income before income taxes		301.6			296.0			258.4
Income tax (expense)		(25.6	)		(25.2	)		(7.2	)
Net income		276.0			270.8			251.2
Net income attributable to non-controlling interest		(13.8	)		(12.4	)		(14.5	)
Net income available for common stock		262.2		$	258.4		$	236.7

Earnings per share of common stock:
Earnings per share, Basic		3.91		$	3.98		$	3.74
Earnings per share, Diluted		3.91		$	3.97		$	3.74

Weighted average common shares outstanding:
Basic		67.0			64.9			63.2
Diluted		67.1			65.0			63.3

The accompanying Notes to Consolidated Financial Statements are an integral part of these Consolidated Financial Statements.

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BLACK HILLS CORPORATION

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

Year ended December 31, 2021 December 31, 2020 December 31, 2019
(in thousands)
Net income $ 251,260 $ 242,763 $ 213,322
Other comprehensive income (loss), net of tax:
Benefit plan liability adjustments - net gain (loss) (net of tax of $(664), $191 and $1,886, respectively) 1,959 (1,062) (6,253)
Benefit plan liability adjustments - prior service costs (net of tax of $0, $0 and $2 respectively) — — (8)
Reclassification adjustment of benefit plan liability - net loss (net of tax of $(665), $(958) and $434, respectively) 1,726 1,429 1,179
Reclassification adjustment of benefit plan liability - prior service cost (net of tax of $27, $23 and $19, respectively) (71) (80) (58)
Derivative instruments designated as cash flow hedges:
Reclassification of net realized (gains) losses on settled/amortized interest rate swaps (net of tax of $(677), $(287) and $(666), respectively) 2,174 2,564 2,185
Net unrealized gains (losses) on commodity derivatives (net of tax of $(980), $14 and $126, respectively) 3,023 (47) (422)
Reclassification of net realized (gains) losses on settled commodity derivatives (net of tax of $502, $(96) and $55, respectively) (1,549) 505 (362)
Other comprehensive income (loss), net of tax 7,262 3,309 (3,739)
Comprehensive income 258,522 246,072 209,583
Less: comprehensive income attributable to non-controlling interest (14,516) (15,155) (14,012)
Comprehensive income available for common stock $ 244,006 $ 230,917 $ 195,571


Year ended	December 31, 2023			December 31, 2022			December 31, 2021
	(in millions)
Net income	$	276.0		$	270.8		$	251.2

Other comprehensive income (loss), net of tax:
Benefit plan liability adjustments - net gain (loss) (net of tax of $0, $(1.5), and $(0.7), respectively)		(0.3	)		4.6			2.0
Reclassification adjustment of benefit plan liability - net loss (net of tax of $0, $(0.2), and $(0.7), respectively)		0.2			0.5			1.7
Reclassification adjustment of benefit plan liability - prior service cost (net of tax of $0, $0, and $0, respectively)		—			(0.1	)		(0.1	)
Derivative instruments designated as cash flow hedges:
Reclassification of net realized (gains) losses on settled/amortized interest rate swaps (net of tax of $(0.7), $(0.7), and $(0.7), respectively)		2.2			2.1			2.2
Net unrealized gains (losses) on commodity derivatives (net of tax of $1.1, $0.2, and $(1.0), respectively)		(3.6	)		(0.6	)		3.0
Reclassification of net realized (gains) losses on settled commodity derivatives (net of tax of $(0.7), $0.7, and $0.5, respectively)		2.3			(2.0	)		(1.5	)
Other comprehensive income (loss), net of tax		0.8			4.5			7.3

Comprehensive income		276.8			275.3			258.5
Less: comprehensive income attributable to non-controlling interest		(13.8	)		(12.4	)		(14.5	)
Comprehensive income available for common stock	$	263.0		$	262.9		$	244.0

See Note 11 for additional disclosures related to Comprehensive Income.

The accompanying Notes to Consolidated Financial Statements are an integral part of these Consolidated Financial Statements.

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BLACK HILLS CORPORATION

CONSOLIDATED BALANCE SHEETS

As of
December 31, 2021 December 31, 2020
(in thousands)
ASSETS
Current assets:
Cash and cash equivalents $ 8,921 $ 6,356
Restricted cash and equivalents 4,889 4,383
Accounts receivable, net 321,652 265,961
Materials, supplies and fuel 150,979 117,400
Derivative assets, current 4,373 1,848
Income tax receivable, net 18,017 19,446
Regulatory assets, current 270,290 51,676
Other current assets 29,012 26,221
Total current assets 808,133 493,291
Property, plant and equipment 7,856,573 7,305,530
Less accumulated depreciation and depletion (1,407,397) (1,285,816)
Total property, plant and equipment, net 6,449,176 6,019,714
Other assets:
Goodwill 1,299,454 1,299,454
Intangible assets, net 10,770 11,944
Regulatory assets, non-current 526,309 226,582
Other assets, non-current 38,054 37,801
Total other assets, non-current 1,874,587 1,575,781
TOTAL ASSETS $ 9,131,896 $ 8,088,786


	As of
	December 31, 2023			December 31, 2022
	(in millions)
ASSETS
Current assets:
Cash and cash equivalents	$	86.6		$	21.4
Restricted cash and equivalents		6.4			5.6
Accounts receivable, net		350.3			508.2
Materials, supplies and fuel		160.9			207.4
Derivative assets, current		—			0.6
Income tax receivable, net		18.5			17.6
Regulatory assets, current		175.7			260.3
Other current assets		28.2			50.6
Total current assets		826.6			1,071.7

Property, plant and equipment		8,917.2			8,374.8
Less accumulated depreciation and depletion		(1,797.9	)		(1,576.8	)
Total property, plant and equipment, net		7,119.3			6,798.0

Other assets:
Goodwill		1,299.5			1,299.5
Intangible assets, net		8.4			9.6
Regulatory assets, non-current		304.4			392.7
Other assets, non-current		62.2			46.7
Total other assets, non-current		1,674.5			1,748.5
TOTAL ASSETS	$	9,620.4		$	9,618.2

The accompanying Notes to Consolidated Financial Statements are an integral part of these Consolidated Financial Statements.

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BLACK HILLS CORPORATION

CONSOLIDATED BALANCE SHEETS

(Continued)

As of
December 31, 2021 December 31, 2020
(in thousands, except share amounts)
LIABILITIES AND EQUITY
Current liabilities:
Accounts payable $ 217,761 $ 183,340
Accrued liabilities 244,759 243,612
Derivative liabilities, current 1,439 2,044
Regulatory liabilities, current 17,574 25,061
Notes payable 420,180 234,040
Current maturities of long-term debt — 8,436
Total current liabilities 901,713 696,533
Long-term debt, net of current maturities 4,126,923 3,528,100
Deferred credits and other liabilities:
Deferred income tax liabilities, net 465,388 408,624
Regulatory liabilities, non-current 485,377 507,659
Benefit plan liabilities 123,925 150,556
Other deferred credits and other liabilities 141,447 134,667
Total deferred credits and other liabilities 1,216,137 1,201,506
Commitments, contingencies and guarantees (Note 3)
0 0
Equity:
Stockholders’ equity -
Common stock $1.00 par value; 100,000,000 shares authorized; issued: 64,793,095 and 62,827,179, respectively 64,793 62,827
Additional paid-in capital 1,783,436 1,657,285
Retained earnings 962,458 870,738
Treasury stock at cost - 54,078 and 32,492, respectively (3,509) (2,119)
Accumulated other comprehensive income (loss) (20,084) (27,346)
Total stockholders’ equity 2,787,094 2,561,385
Non-controlling interest 100,029 101,262
Total equity 2,887,123 2,662,647
TOTAL LIABILITIES AND TOTAL EQUITY $ 9,131,896 $ 8,088,786


	As of
	December 31, 2023			December 31, 2022
	(in millions, except share amounts)
LIABILITIES AND EQUITY
Current liabilities:
Accounts payable	$	186.4		$	310.0
Accrued liabilities		293.3			243.5
Derivative liabilities, current		6.5			6.6
Regulatory liabilities, current		98.9			46.0
Notes payable		—			535.6
Current maturities of long-term debt		600.0			525.0
Total current liabilities		1,185.1			1,666.7

Long-term debt, net of current maturities		3,801.2			3,607.3

Deferred credits and other liabilities:
Deferred income tax liabilities, net		548.0			508.9
Regulatory liabilities, non-current		467.7			472.6
Benefit plan liabilities		123.9			116.7
Other deferred credits and other liabilities		188.7			156.1
Total deferred credits and other liabilities		1,328.3			1,254.3

Commitments, contingencies and guarantees (Note 3)

Equity:
Stockholders’ equity -
Common stock $1.00 par value; 100,000,000 shares authorized; issued: 68,265,042 and 66,140,396, respectively		68.3			66.1
Additional paid-in capital		2,007.7			1,882.7
Retained earnings		1,158.2			1,064.1
Treasury stock at cost - 68,073 and 36,726, respectively		(4.1	)		(2.4	)
Accumulated other comprehensive income (loss)		(14.8	)		(15.6	)
Total stockholders’ equity		3,215.3			2,994.9
Non-controlling interest		90.5			95.0
Total equity		3,305.8			3,089.9

TOTAL LIABILITIES AND TOTAL EQUITY	$	9,620.4		$	9,618.2

The accompanying Notes to Consolidated Financial Statements are an integral part of these Consolidated Financial Statements.

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BLACK HILLS CORPORATION

CONSOLIDATED STATEMENTS OF CASH FLOWS

Year ended December 31, 2021 December 31, 2020 December 31, 2019
(in thousands)
Operating activities:
Net income $ 251,260 $ 242,763 $ 213,322
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation, depletion and amortization 235,953 224,457 209,120
Deferred financing cost amortization 6,968 7,883 7,838
Impairment of investment — 6,859 19,741
Stock compensation 9,655 5,373 12,095
Deferred income taxes 7,261 38,091 38,020
Employee benefit plans 9,590 11,997 12,406
Other adjustments, net 7,018 11,669 16,485
Change in certain operating assets and liabilities:
Materials, supplies and fuel (35,707) 2,755 2,052
Accounts receivable and other current assets (43,170) (10,843) 7,578
Accounts payable and other current liabilities 10,660 24,659 (34,906)
Regulatory assets (514,687) (5,047) 23,619
Regulatory liabilities (9,533) (10,706) (15,158)
Contributions to defined benefit pension plans — (12,700) (12,700)
Other operating activities, net 167 4,653 6,001
Net cash provided by (used in) operating activities (64,565) 541,863 505,513
Investing activities:
Property, plant and equipment additions (677,492) (767,404) (818,376)
Other investing activities 13,262 5,740 2,166
Net cash (used in) investing activities (664,230) (761,664) (816,210)
Financing activities:
Dividends paid on common stock (145,023) (135,439) (124,647)
Common stock issued 118,979 99,278 101,358
Term Loan - borrowings 800,000 — —
Term Loan - repayments (800,000) — —
Net borrowings (payments) of Revolving Credit Facility and CP Program 186,140 (115,460) 163,880
Long-term debt - issuance 600,000 400,000 1,100,000
Long-term debt - repayments (8,436) (8,597) (905,743)
Distributions to non-controlling interests (15,749) (15,839) (17,901)
Other financing activities (4,045) (7,061) (16,737)
Net cash provided by financing activities 731,866 216,882 300,210
Net change in cash, restricted cash and cash equivalents 3,071 (2,919) (10,487)
Cash, restricted cash and cash equivalents beginning of year 10,739 13,658 24,145
Cash, restricted cash and cash equivalents end of year $ 13,810 $ 10,739 $ 13,658
Supplemental cash flow information:
Cash (paid) refunded during the period:
Interest (net of amounts capitalized) $ (142,685) $ (136,549) $ (131,774)
Income taxes $ 1,521 $ 2,172 $ 4,682
Non-cash investing and financing activities:
Accrued property, plant and equipment purchases at December 31 $ 68,758 $ 72,215 $ 91,491
Increase in capitalized assets associated with asset retirement obligations $ 2,109 $ 4,774 $ 5,044


Year ended	December 31, 2023			December 31, 2022			December 31, 2021
	(in millions)
Operating activities:
Net income	$	276.0		$	270.8		$	251.2
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation, depletion and amortization		256.8			250.9			236.0
Deferred financing cost amortization		10.1			9.8			7.0
Stock compensation		7.0			8.6			9.7
Deferred income taxes		25.4			25.6			7.3
Employee benefit plans		11.5			5.5			9.6
Other adjustments, net		2.7			(4.7	)		7.0
Change in certain operating assets and liabilities:
Materials, supplies and fuel		51.4			(75.4	)		(35.7	)
Accounts receivable and other current assets		204.5			(184.5	)		(43.2	)
Accounts payable and other current liabilities		(109.9	)		89.4			10.6
Regulatory assets		236.8			203.9			(514.7	)
Regulatory liabilities		—			—			(9.5	)
Other operating activities, net		(27.9	)		(15.1	)		0.1
Net cash provided by (used in) operating activities		944.4			584.8			(64.6	)
Investing activities:
Property, plant and equipment additions		(555.6	)		(604.4	)		(677.5	)
Other investing activities		18.9			0.5			13.3
Net cash (used in) investing activities		(536.7	)		(603.9	)		(664.2	)
Financing activities:
Dividends paid on common stock		(168.1	)		(156.7	)		(145.0	)
Common stock issued		118.3			90.1			119.0
Term Loan - borrowings		—			—			800.0
Term Loan - repayments		—			—			(800.0	)
Net borrowings (payments) of Revolving Credit Facility and CP Program		(535.6	)		115.4			186.1
Long-term debt - issuance		800.0			—			600.0
Long-term debt - repayments		(525.0	)		—			(8.4	)
Distributions to non-controlling interests		(18.3	)		(17.4	)		(15.7	)
Other financing activities		(13.0	)		0.9			(4.1	)
Net cash provided by (used in) financing activities		(341.7	)		32.3			731.9
Net change in cash, restricted cash and cash equivalents		66.0			13.2			3.1
Cash, restricted cash and cash equivalents beginning of year		27.0			13.8			10.7
Cash, restricted cash and cash equivalents end of year	$	93.0		$	27.0		$	13.8
Supplemental cash flow information:
Cash (paid) refunded during the period:
Interest (net of amounts capitalized)	$	(157.3	)	$	(152.5	)	$	(142.7	)
Income taxes	$	(1.0	)	$	0.8		$	1.5
Non-cash investing and financing activities:
Accrued property, plant and equipment purchases at December 31	$	52.4		$	59.3		$	68.8
Increase in capitalized assets associated with asset retirement obligations	$	3.8		$	14.0		$	2.1

The accompanying Notes to Consolidated Financial Statements are an integral part of these Consolidated Financial Statements.

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BLACK HILLS CORPORATION

CONSOLIDATED STATEMENTS OF EQUITY

Common Stock Treasury Stock
(in thousands except share amounts) Shares Value Shares Value Additional Paid in Capital Retained Earnings AOCI Non controlling Interest Total
Balance at December 31, 2018 60,048,567 $ 60,049 44,253 $ (2,510) $ 1,450,569 $ 700,396 $ (26,916) $ 105,835 $ 2,287,423
Net income — — — — — 199,310 — 14,012 213,322
Other comprehensive (loss), net of tax — — — — — — (3,739) — (3,739)
Dividends on common stock ($2.05 per share) — — — — — (124,647) — — (124,647)
Share-based compensation 103,759 104 (40,297) 2,243 4,729 — — — 7,076
Issuance of common stock 1,328,332 1,328 — — 98,672 — — — 100,000
Issuance costs — — — — (1,182) — — — (1,182)
Other — — — — — 327 — — 327
Implementation of ASU 2016-02 Leases — — — — — 3,390 — — 3,390
Distributions to non-controlling interest — — — — — — — (17,901) (17,901)
Balance at December 31, 2019 61,480,658 $ 61,481 3,956 $ (267) $ 1,552,788 $ 778,776 $ (30,655) $ 101,946 $ 2,464,069
Net income — — — — — 227,608 — 15,155 242,763
Other comprehensive income, net of tax — — — — — — 3,309 — 3,309
Dividends on common stock ($2.17 per share) — — — — — (135,439) — — (135,439)
Share-based compensation 123,578 123 28,536 (1,852) 6,923 — — — 5,194
Issuance of common stock 1,222,943 1,223 — — 98,777 — — — 100,000
Issuance costs — — — — (1,203) — — — (1,203)
Implementation of ASU 2016-13 Financial Instruments - - Credit Losses — — — — — (207) — — (207)
Distributions to non-controlling interest — — — — — — — (15,839) (15,839)
Balance at December 31, 2020 62,827,179 $ 62,827 32,492 $ (2,119) $ 1,657,285 $ 870,738 $ (27,346) $ 101,262 $ 2,662,647
Net income — — — — — 236,744 — 14,516 251,260
Other comprehensive income, net of tax — — — — — — 7,262 — 7,262
Dividends on common stock ($2.29 per share) — — — — — (145,023) — — (145,023)
Share-based compensation 153,719 154 21,586 (1,390) 9,256 — — — 8,020
Issuance of common stock 1,812,197 1,812 — — 118,112 — — — 119,924
Issuance costs — — — — (1,217) — — — (1,217)
Other — — — — — (1) — — (1)
Distributions to non-controlling interest — — — — — — — (15,749) (15,749)
Balance at December 31, 2021 64,793,095 $ 64,793 54,078 $ (3,509) $ 1,783,436 $ 962,458 $ (20,084) $ 100,029 $ 2,887,123


	Common Stock				Treasury Stock
(in millions except share amounts)	Shares		Value		Shares			Value			Additional Paid in Capital			Retained Earnings			AOCI			Non controlling Interest			Total
Balance at December 31, 2020		62,827,179	$	62.8		32,492		$	(2.1	)	$	1,657.3		$	870.7		$	(27.4	)	$	101.2		$	2,662.5
Net income		—		—		—			—			—			236.7			—			14.5			251.2
Other comprehensive income, net of tax		—		—		—			—			—			—			7.3			—			7.3
Dividends on common stock ($2.29 per share)		—		—		—			—			—			(145.0	)		—			—			(145.0	)
Share-based compensation		153,719		0.2		21,586			(1.4	)		9.2			—			—			—			8.0
Issuance of common stock		1,812,197		1.8		—			—			118.1			—			—			—			119.9
Issuance costs		—		—		—			—			(1.2	)		—			—			—			(1.2	)
Distributions to non-controlling interest		—		—		—			—			—			—			—			(15.7	)		(15.7	)
Balance at December 31, 2021		64,793,095	$	64.8		54,078		$	(3.5	)	$	1,783.4		$	962.4		$	(20.1	)	$	100.0		$	2,887.0
Net income		—		—		—			—			—			258.4			—			12.4			270.8
Other comprehensive income, net of tax		—		—		—			—			—			—			4.5			—			4.5
Dividends on common stock ($2.41 per share)		—		—		—			—			—			(156.7	)		—			—			(156.7	)
Share-based compensation		39,546		—		(17,352	)		1.1			10.5			—			—			—			11.6
Issuance of common stock		1,307,755		1.3		—			—			89.9			—			—			—			91.2
Issuance costs		—		—		—			—			(1.1	)		—			—			—			(1.1	)
Distributions to non-controlling interest		—		—		—			—			—			—			—			(17.4	)		(17.4	)
Balance at December 31, 2022		66,140,396	$	66.1		36,726		$	(2.4	)	$	1,882.7		$	1,064.1		$	(15.6	)	$	95.0		$	3,089.9
Net income		—		—		—			—			—			262.2			—			13.8			276.0
Other comprehensive income, net of tax		—		—		—			—			—			—			0.8			—			0.8
Dividends on common stock ($2.50 per share)		—		—		—			—			—			(168.1	)		—			—			(168.1	)
Share-based compensation		93,257		0.1		31,347			(1.7	)		8.8			—			—			—			7.2
Issuance of common stock		2,031,389		2.1		—			—			117.9			—			—			—			120.0
Issuance costs		—		—		—			—			(1.7	)		—			—			—			(1.7	)
Distributions to non-controlling interest		—		—		—			—			—			—			—			(18.3	)		(18.3	)
Balance at December 31, 2023		68,265,042	$	68.3		68,073		$	(4.1	)	$	2,007.7		$	1,158.2		$	(14.8	)	$	90.5		$	3,305.8

The accompanying Notes to Consolidated Financial Statements are an integral part of these Consolidated Financial Statements.

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BLACK HILLS CORPORATION

Notes to Consolidated Financial Statements

December 31, ~~2021, 2020~~2023, 2022 and ~~2019~~

2021

(1) BUSINESS DESCRIPTION AND SIGNIFICANT ACCOUNTING POLICIES

Business Description

Black Hills Corporation is a customer-focused, growth-oriented utility company headquartered in Rapid City, South Dakota. We are a holding company that, through our subsidiaries, conducts our operations through the following reportable segments: Electric Utilities and Gas Utilities. Certain unallocated corporate expenses that support our operating segments are presented as Corporate and Other.

~~Segment Reporting~~

Our reportable segments are based on our method of internal reporting, which is generally segregated by differences in products and services. All of our operations and assets are located within the United States.

Our Electric Utilities segment includes the operating results of the regulated electric utility operations of Colorado Electric, South Dakota Electric, and Wyoming Electric, which supply regulated electric utility services to areas in Colorado, Montana, South Dakota and Wyoming. We also own and operate non-regulated power generation and mining businesses that are vertically integrated with our Electric Utilities.

~~Our Gas Utilities segment consists of the operating results of our regulated natural gas utility subsidiaries in Arkansas, Colorado, Iowa, Kansas, Nebraska and Wyoming.~~

~~For further information regarding our segment reporting, see~~ ~~Note 16~~.

Use of Estimates and Basis of Presentation

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of certain assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Changes in facts and circumstances or additional information may result in revised estimates and actual results could differ materially from those estimates.

~~COVID-19 Pandemic~~

In March 2020, the World Health Organization categorized COVID-19 as a pandemic and the President of the United States declared the outbreak a national emergency. The U.S. government has deemed electric and natural gas utilities to be critical infrastructure sectors that provide essential services during this emergency. As a provider of essential services, the Company has an obligation to provide services to our customers. The Company remains focused on protecting the health of our customers, employees and the communities in which we operate while assuring the continuity of our business operations.

The Company’s Consolidated Financial Statements reflect estimates and assumptions made by management that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the Consolidated Financial Statements and reported amounts of revenue and expenses during the reporting periods presented. The Company considered the impacts of COVID-19 on the assumptions and estimates used and determined that, for the years ended December 31, 2021 and 2020, there were no material adverse impacts on the Company’s results of operations.

Principles of Consolidation

The consolidated financial statements include the accounts of Black Hills Corporation and its wholly-owned and majority-owned and controlled subsidiaries. Furthermore, VIEs in which the Company has an ownership interest and is the primary beneficiary, thus controlling the VIE, have been consolidated. All intercompany balances and transactions have been eliminated in consolidation. ~~For additional information on intercompany revenues, see~~

~~Note 16~~

~~Our Consolidated Statements of Income include operating activity of acquired companies beginning with their acquisition date.~~ We use the proportionate consolidation method to account for our ownership interest in any jointly-owned ~~electric utility generation facility, wind farm or transmission tie.~~facility. See Note 6 for additional information.

Non-controlling Interests

~~Table~~

We account for changes in our controlling interests of ~~Contents~~subsidiaries according to ASC 810, Consolidation. ASC 810 requires that the Company record such changes as equity transactions, recording no gain or loss on such a sale. GAAP requires that non-controlling interests in subsidiaries and affiliates be reported in the equity section of a company’s balance sheet. In addition, the amounts attributable to the non-controlling interest net income (loss) of those subsidiaries are reported separately in the consolidated statements of income and comprehensive income. See Note 12 for additional information.

Variable Interest Entities

We evaluate arrangements and contracts with other entities to determine if they are VIEs and if we are the primary beneficiary. GAAP provides a framework for identifying VIEs and determining when a company should include the assets, liabilities, non-controlling interest and results of activities of a VIE in its consolidated financial statements.

A VIE should be consolidated if a party with an ownership, contractual or other financial interest in the VIE (a variable interest holder) has the power to direct the VIE’s most significant activities and the obligation to absorb losses or right to receive benefits of the VIE that could be significant to the VIE. A variable interest holder that consolidates the VIE is called the primary beneficiary. Upon consolidation, the primary beneficiary generally must initially record all of the VIE’s assets, liabilities and non-controlling interests at fair value and subsequently account for the VIE as if it were consolidated.

Our evaluation of whether our interest qualifies as the primary beneficiary of a VIE involves significant judgments, estimates and assumptions and includes a qualitative analysis of the activities that most significantly impact the VIE’s economic performance and whether the Company has the power to direct those activities, the design of the entity, the rights of the parties and the purpose of the arrangement. Black Hills Colorado IPP is a VIE. See ~~additional information in~~ Note 12 for additional information.

Cash, Cash Equivalents and Restricted Cash

We consider all highly liquid investments with an original maturity of three months or less to be cash and cash equivalents. We maintain cash accounts for various specified purposes, which are classified as restricted cash.

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Revenue Recognition

Our revenue contracts generally provide for performance obligations that are fulfilled and transfer control to customers over time, represent a series of distinct services that are substantially the same, involve the same pattern of transfer to the customer and provide a right to consideration from our customers in an amount that corresponds directly with the value to the customer for the performance completed to date. Therefore, we recognize revenue in the amount to which we have a right to invoice. Our primary types of revenue contracts are:

•

Regulated natural gas and electric utility services tariffs - Our Utilities have regulated operations, as defined by ASC 980, Regulated Operations, that provide services to regulated customers under tariff rates, charges, terms and conditions of service and prices determined by the jurisdictional regulators designated for our service territories. Our regulated services primarily encompass single performance obligations for delivery of either commodity natural gas, commodity electricity, natural gas transportation or electric transmission services. These service revenues are variable based on quantities delivered, influenced by seasonal business and weather patterns. Tariffs are only permitted to be changed through a rate-setting process involving the state or federal regulatory commissions to establish contractual rates between the utility and its customers. All of our Utilities’ regulated sales are subject to regulatory-approved tariffs.

•

Power sales agreements - Our Electric Utilities segment has long-term wholesale power sales agreements with other load-serving entities, including affiliates, for the sale of excess power from owned generating units. These agreements include a combination of “take or pay” arrangements, where the customer is obligated to pay for the energy regardless of whether it actually takes delivery, as well as “requirements only” arrangements, where the customer is only obligated to pay for the energy the customer needs. In addition to these long-term contracts, we also sell excess energy to other load-serving entities on a short-term basis. The pricing for all of these arrangements is included in the executed contracts or confirmations, reflecting the standalone selling price and is variable based on energy delivered. Certain energy sale and purchase transactions with the same counterparty and at the same delivery point are netted to reflect the economic substance of the arrangement.

•~~Coal supply agreements~~

- Our WRDC mine sells coal primarily under long-term contracts to affiliates for use at their generation facilities. The contracts include a single promise to supply coal necessary to fuel the customers’ facilities during the contract term. The transaction price is established in the supply agreements, including cost-based agreements with the affiliated regulated utilities, and is variable based on tons delivered.

•~~Other non-regulated services~~ - Our Utilities segments also provide non-regulated services primarily comprised of appliance repair service and protection plans, electric and natural gas technical infrastructure construction and maintenance services, and in Nebraska and Wyoming, an unbundled natural gas commodity offering under the regulatory-approved Choice Gas Program. Revenue contracts for these services generally represent a single performance obligation with the price reflecting the standalone selling price stated in the agreement and a variable revenue based on the units delivered or services provided.

~~Table of Contents~~

The majority of our revenue contracts are based on variable quantities delivered. Any fixed consideration contracts with an expected duration of one year or more are immaterial to our consolidated revenues. Variable consideration constraints in the form of discounts, rebates, credits, price concessions, incentives, performance bonuses, penalties or other similar items are not material for our revenue contracts. We are the principal in our revenue contracts, as we have control over the services prior to those services being transferred to the customer.

Revenue Not in Scope of ASC 606

Other revenues included in the tables in Note 4 include our revenue accounted for under separate accounting guidance, including lease revenue under ASC 842, Leases, derivative revenue under ASC 815, Derivatives and Hedging, and alternative revenue programs revenue under ASC 980, Regulated Operations.

Significant Judgments and Estimates

Unbilled Revenue

To the extent that deliveries have occurred, but a bill has not been issued, our Utilities accrue an estimate of the revenue since the latest billing. This estimate is calculated based upon several factors including billings through the last billing cycle in a month and prices in effect in our jurisdictions. Each month, the estimated unbilled revenue amounts are trued-up and recorded in Accounts receivable, net on the accompanying Consolidated Balance Sheets.

Contract Balances

The nature of our primary revenue contracts provides an unconditional right to consideration upon service delivery; therefore, no customer contract assets or liabilities exist. The unconditional right to consideration is represented by the balance in our Accounts receivable, which is further discussed below.

~~Additional information is included in~~See Note 4 for additional information.

Accounts Receivable and Allowance for Credit Losses

Accounts receivable for our Electric and Gas Utilities business segments primarily consists of sales to residential, commercial, industrial, transportation and other customers, all of which do not bear interest. These accounts receivable are stated at billed and estimated unbilled amounts, net of allowance for credit ~~losses. Accounts receivable for our power generation~~losses, and ~~mining businesses consists of amounts due from sales of electric energy and capacity and coal primarily to affiliates or regional utilities.~~

do not bear interest. We maintain an allowance for credit losses which reflects our estimate of uncollectible trade receivables. We regularly review our trade receivable allowance by considering such factors as historical experience, credit worthiness, the age of the receivable balances and current economic conditions that may affect collectability.

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In specific cases where we are aware of a customer’s inability or reluctance to pay, we record an allowance for credit losses to reduce the net receivable balance to the amount we reasonably expect to collect. However, if circumstances change, our estimate of the recoverability of accounts receivable could be affected. Circumstances which could affect our estimates include, but are not limited to, customer credit issues, expected losses, the level of commodity prices, customer deposits and general economic conditions. Accounts are written off once they are deemed to be uncollectible or the time allowed for dispute under the contract has expired.

We utilize master netting agreements which consist of an agreement between two parties who have multiple contracts with each other that provide for the net settlement of all contracts in the event of default on or termination of any one contract. When the right of offset exists, accounting standards permit the netting of receivables and payables under a legally enforceable master netting agreement between counterparties. Accounting standards also permit offsetting of fair value amounts recognized for the right to reclaim, or the obligation to return, cash collateral against fair value amounts recognized for derivative instruments executed with the same counterparty.

Following is a summary of accounts receivable as of December 31 (in ~~thousands)~~millions):


	2023			2022
Billed Accounts Receivable	$	198.5		$	267.6
Unbilled Revenue		154.0			243.6
Less Allowance for Credit Losses		(2.2	)		(3.0	)
Accounts Receivable, net	$	350.3		$	508.2

2021 2020
Billed Accounts Receivable $ 181,027 $ 146,899
Unbilled Revenue $ 142,738 $ 126,065
Less Allowance for Credit Losses $ (2,113) $ (7,003)
Accounts Receivable, net $ 321,652 $ 265,961

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Changes to allowance for credit losses for the years ended December 31, were as follows (in ~~thousands)~~millions):


	Balance at Beginning of Year		Additions Charged to Costs and Expenses		Recoveries and Other Additions		Write-offs and Other Deductions			Balance at End of Year
2023	$	3.0	$	8.7	$	4.1	$	(13.6	)	$	2.2
2022	$	2.1	$	9.1	$	3.5	$	(11.7	)	$	3.0
2021	$	7.0	$	2.4	$	3.6	$	(10.9	)	$	2.1

Balance at Beginning of Year Additions Charged to Costs and Expenses Recoveries and Other Additions Write-offs and Other Deductions Balance at End of Year
2021 $ 7,003 $ 2,444 (a) $ 3,560 $ (10,894) $ 2,113
2020 $ 2,444 $ 8,927 (a) $ 4,728 $ (9,096) $ 7,003
2019 $ 3,209 $ 5,795 $ 3,942 $ (10,502) $ 2,444

~~_________________~~

(a) Due to the COVID-19 pandemic, all of our jurisdictions temporarily suspended disconnections due to non-payment for a period of time, which increased our accounts receivable arrears balances. As a result, we increased our allowance for credit losses and bad debt expense for the year ended December 31, 2020 by an incremental $3.3 million. All jurisdiction disconnect moratoriums ended on or before May 3, 2021.

Materials, Supplies and Fuel

~~The following amounts by major classification are included in Materials, supplies and fuel on the accompanying Consolidated Balance Sheets as of December 31 (in thousands):~~

2021 2020
Materials and supplies $ 86,400 $ 85,250
Fuel 1,267 1,531
Natural gas in storage 63,312 30,619
Total materials, supplies and fuel $ 150,979 $ 117,400

Materials and supplies represent parts and supplies for our business ~~segments.~~operations. Fuel represents diesel oil and gas used by our ~~Electric Utilities~~electric generating facilities to produce power. Natural gas in storage primarily represents gas purchased for use by our gas customers. All of our Materials, supplies and fuel are recorded using the weighted-average cost method and are valued at the lower-of-cost or net realizable value. The value of our natural gas in storage fluctuates with seasonal volume requirements of our business and the commodity price of natural gas.

~~Investments~~

In February 2018, we made a contribution of $28 million of assets in exchange for equity securities in a privately held oil and gas company as we divested of our Oil and Gas segment. The carrying value of our investment in the equity securities was recorded at cost. We review this investment on a periodic basis to determine whether a significant event or change in circumstances has occurred that may have an adverse effect on the value of the investment.

During the third quarter of 2019, we assessed our investment for impairment as a result of a deterioration in earnings performance of the privately held oil and gas company and an adverse change in future natural gas prices. Based on the estimated fair value of our investment, we concluded that the carrying value of the investment exceeded fair value. As a result, we recorded a pre-tax impairment loss of $20 million for the three months ended September 30, 2019, which was the difference between the carrying amount and the fair value of the investment at that time.

During the first quarter of 2020, we assessed our investment for impairment as a result of continued adverse changes in future natural gas prices and liquidity concerns at the privately held oil and gas company. Based on the estimated fair value of our investment, we concluded that the carrying value of the investment exceeded fair value. As a result, we recorded a pre-tax impairment loss of $6.9 million for the three months ended March 31, 2020, which was the difference between the carrying value and the fair value of the investment at that time.

The following ~~table presents the carrying value of our investments (in thousands), which~~amounts by major classification are included in ~~Other assets, non-current~~Materials, supplies and fuel on the accompanying Consolidated Balance Sheets as of December ~~31:~~

2021 2020
Investment in privately held oil and gas company $ 1,500 $ 1,500
Cash surrender value of life insurance contracts 12,365 13,628
Other investments 1,616 682
Total investments $ 15,481 $ 15,810

31 (in millions):

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	2023		2022
Materials and supplies	$	105.9	$	99.7
Fuel		7.7		3.1
Natural gas in storage		47.3		104.6
Total materials, supplies and fuel	$	160.9	$	207.4

Property, Plant and Equipment

Property, plant and equipment are stated at cost, which includes construction-related direct labor and material costs, indirect construction costs including labor and related costs of departments associated with supporting construction activities, and AFUDC. Additions to and significant replacements of property are charged to property, plant and equipment at cost. We also classify our Cushion Gas as Property, plant and equipment. Ordinary repairs and maintenance of property, except as allowed under rate regulations, are charged to operations as incurred.

We receive contributions in aid of construction (CIACs) from third parties that are generally intended to defray all or a portion of the costs for certain capital projects. Such CIAC costs are recorded ~~at cost.~~ as a reduction to Property, plant, and equipment.

The cost of regulated utility property, plant and equipment retired, or otherwise disposed in the ordinary course of business, less salvage plus retirement costs, is charged to accumulated depreciation. Estimated removal costs related to our regulated properties that do not have legal retirement obligations are reclassified from accumulated depreciation and reflected as regulatory liabilities. Retirement or disposal of all other operating assets result in gains or losses recognized as a reduction to Operations and maintenance expense.

See Note 5 for additional information.

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Depreciation

Depreciation provisions for property, plant and equipment are generally computed on a straight-line basis based on the applicable estimated service life of the various classes of property. The composite depreciation method is applied to regulated utility property. Depreciation studies are conducted periodically to update composite rates and are approved by state utility commissions and/or the FERC when required. Capitalized mining costs and coal leases are amortized on a unit-of-production method based on volumes produced and estimated reserves. For certain non-regulated power plant components, depreciation is computed on a unit-of-production methodology based on plant hours run.

AFUDC

Included in the cost of regulated construction projects is AFUDC, when applicable, which represents the approximate composite cost of borrowed funds and a return on equity used to finance a regulated utility project. The following table presents AFUDC amounts (in ~~thousands)~~millions) for the years ended December 31:


	Income Statement Location	2023		2022		2021
AFUDC Borrowed	Interest expense incurred, net of amounts capitalized	$	6.0	$	5.6	$	4.1
AFUDC Equity	Other income (expense), net		0.4		0.6		0.6

Income Statement Location 2021 2020 2019
AFUDC Borrowed Interest expense incurred net of amounts capitalized (including amortization of debt issuance costs, premiums and discounts) $ 4,068 $ 5,617 $ 6,556
AFUDC Equity Other income (expense), net 593 318 472

We also capitalize interest, when applicable, on undeveloped leasehold costs and certain non-regulated construction projects. In addition, asset retirement costs associated with tangible long-lived regulated utility assets are recognized as liabilities with an increase to the carrying amounts of the related long-lived regulated utility assets in the period incurred. The amounts capitalized are included in Property, plant and equipment on the accompanying Consolidated Balance Sheets. ~~We also classify our Cushion Gas as property, plant and equipment.~~

The cost of regulated utility property, plant and equipment retired, or otherwise disposed in the ordinary course of business, less salvage plus retirement costs, is charged to accumulated depreciation. Estimated removal costs related to our regulated properties that do not have legal retirement obligations are reclassified from accumulated depreciation and reflected as regulatory liabilities. Retirement or disposal of all other assets result in gains or losses recognized as a component of operating income. Ordinary repairs and maintenance of property, except as allowed under rate regulations, are charged to operations as incurred.

Depreciation provisions for property, plant and equipment are generally computed on a straight-line basis based on the applicable estimated service life of the various classes of property. The composite depreciation method is applied to regulated utility property. Capitalized mining costs and coal leases are amortized on a unit-of-production method based on volumes produced and estimated reserves. For certain non-regulated power plant components, depreciation is computed on a unit-of-production methodology based on plant hours run.

~~See~~ ~~Note 5~~

~~for additional information.~~

Asset Retirement Obligations

Accounting standards for AROs associated with long-lived assets require that the present value of retirement costs for which we have a legal obligation be recorded as liabilities with an equivalent amount added to the asset cost and depreciated over an appropriate period. The associated ARO accretion expense for our non-regulated operations, and regulated operations without a corresponding recovery mechanism, is included within Depreciation, depletion and amortization on the accompanying Consolidated Statements of Income. The accounting for the obligation for regulated operations with a regulatory mechanism has no income statement impact due to the deferral of the adjustments through the establishment of a regulatory asset or a regulatory liability.

We initially record liabilities for the present value of retirement costs for which we have a legal obligation, with an equivalent amount added to the asset cost. The asset is then depreciated or depleted over the appropriate useful life and the liability is accreted over time by applying an interest method of allocation. Any difference in the actual cost of the settlement of the liability and the recorded amount is recognized as a gain or loss in the results of operations at the time of settlement for our non-regulated operations. ~~Additional information is included in~~See Note 7 for additional information.

Goodwill and Intangible Assets

Goodwill and intangible assets with indefinite lives are not amortized, but the carrying values are reviewed upon an indicator of impairment or at least annually. Intangible assets with a finite life are amortized over their estimated useful lives.

The Company has determined that the reporting units for its goodwill impairment test are its operating segments, or components of an operating segment.

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Our goodwill impairment analysis includes an income approach and a market approach to estimate the fair value of our reporting units. ~~This analysis requires the input~~These valuations require significant judgments, including, but not limited to: 1) estimates of ~~several critical~~future cash flows, based on our internal five-year business plans and adjusted as appropriate for our view of market participant assumptions, ~~including future~~with long range cash flows estimated using a terminal value calculation; 2) estimates of long-term growth rates ~~cash flow projections, operating cost escalation rates, rates~~for our businesses; 3) the determination of ~~return, a risk-adjusted discount rate, timing and level of success in regulatory rate proceedings, the~~an appropriate weighted-average cost of ~~debt~~capital or discount rate; and ~~equity capital, long-term earnings and merger multiples~~4) the utilization of market information such as recent sales transactions for comparable ~~companies.~~

assets within the utility and energy industries.

We believe that goodwill reflects the inherent value of the relatively stable, long-lived cash flows of our Utilities businesses, considering the regulatory environment, and the long-lived cash flow and rate base growth opportunities at our Utilities, and those businesses vertically integrated. Goodwill amounts have not changed since 2016.

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As of December 31, ~~2021~~2023 and ~~2020,~~2022, Goodwill balances were as follows (in ~~thousands)~~millions):


	Electric Utilities		Gas Utilities		Total
Goodwill	$	257.3	$	1,042.2	$	1,299.5

Electric Utilities Gas Utilities Total
Goodwill $ 257,244 $ 1,042,210 $ 1,299,454

Our intangible assets represent contract intangibles, easements, rights-of-way, customer listings and trademarks. The finite-lived intangible assets are amortized using a straight-line method based on estimated useful lives; these assets are currently being amortized from 2 years to 4041 years.Changes to intangible assets for the years ended December 31, were as follows (in ~~thousands)~~millions):

2021 2020 2019
Intangible assets, net, beginning balance $ 11,944 $ 13,266 $ 14,337
Amortization expense (a)
(1,174) (1,322) (1,071)
Intangible assets, net, ending balance $ 10,770 $ 11,944 $ 13,266


	2023			2022			2021
Intangible assets, net, beginning balance	$	9.6		$	10.8		$	11.9
Amortization expense (a)		(1.2	)		(1.2	)		(1.1	)
Intangible assets, net, ending balance	$	8.4		$	9.6		$	10.8

~~____________________~~

(a)

~~(a)~~ Amortization expense for existing intangible assets is expected to be ~~$1.2~~$1.2 million for each year of the next five years.

The following amounts by major classification are included in Accrued liabilities on the accompanying Consolidated Balance Sheets as of December 31 (in ~~thousands)~~millions):


	2023		2022
Accrued employee compensation, benefits and withholdings	$	74.8	$	62.9
Accrued property taxes		52.7		52.4
Customer deposits and prepayments		76.0		47.7
Accrued interest		46.3		33.8
Other (none of which is individually significant)		43.5		46.7
Total accrued liabilities	$	293.3	$	243.5

Fair Value Measurements

Financial Instruments

We use the following fair value hierarchy for determining inputs for our financial instruments. Our assets and liabilities for financial instruments are classified and disclosed in one of the following fair value categories:

Level 1 — Unadjusted quoted prices available in active markets that are accessible at the measurement date for identical unrestricted assets or liabilities. Level 1 instruments primarily consist of highly liquid and actively traded financial instruments with quoted pricing information on an ongoing basis.

Level 2 — Pricing inputs include quoted prices for identical or similar assets and liabilities in active markets other than quoted prices in Level 1, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability and inputs that are derived principally from or corroborated by observable market data by correlation or other means.

Level 3 — Pricing inputs are generally less observable from objective sources. These inputs reflect management’s best estimate of fair value using its own assumptions about the assumptions a market participant would use in pricing the asset or liability.

Assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. Our assessment of the significance of a particular input to the fair value measurement requires judgment and may affect the placement within the fair value hierarchy levels. We record transfers, if necessary, between levels at the end of the reporting period for all of our financial instruments.

Transfers into Level 3, if any, occur when significant inputs used to value the derivative instruments become less observable, such as a significant decrease in the frequency and volume in which the instrument is traded, negatively impacting the availability of observable pricing inputs. Transfers out of Level 3, if any, occur when the significant inputs become more observable, such as when the time between the valuation date and the delivery date of a transaction becomes shorter, positively impacting the availability of observable pricing inputs.

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Valuation Methodologies for Derivatives

The wholesale electric energy and natural gas commodity contracts for our Utilities are valued using the market approach and include forward strip pricing at liquid delivery points, exchange-traded futures, options, basis swaps and over-the-counter swaps and options (Level 2). For exchange-traded futures, options and basis swap assets and liabilities, fair value was derived using broker quotes validated by the exchange settlement pricing for the applicable contract. For over-the-counter instruments, the fair value is obtained by utilizing a nationally recognized service that obtains observable inputs to compute the fair value, which we validate by comparing our valuation with the counterparty. The fair value of these swaps includes a ~~CVA~~credit valuation adjustment based on the credit spreads of the counterparties when we are in an unrealized gain position or on our own credit spread when we are in an unrealized loss position.

~~Additional information on fair value measurements is included in~~See Notes 10 and 13 for additional information.

Derivatives and Hedging Activities

All our derivatives are measured at fair value and recognized as either assets or liabilities on the Consolidated Balance Sheets, except for derivative contracts that qualify for and are elected under the normal purchase and normal sales exception. Normal purchases and normal sales are contracts where physical delivery is probable, quantities are expected to be used or sold in the normal course of business over a reasonable amount of time and pricing is clearly and closely related to the asset being purchased or sold. Normal purchase and sales contracts are recognized when the underlying physical transaction is completed under the accrual basis of accounting.

In addition, certain derivative contracts approved by regulatory authorities are either recovered or refunded through customer rates. Any changes in the fair value of these approved derivative contracts are deferred as a regulatory asset or regulatory liability pursuant to ASC 980, Regulated Operations.

We also have some derivatives that qualify for hedge accounting and are designated as cash flow hedges. The gain or loss on these designated derivatives is deferred in AOCI and reclassified into earnings when the corresponding hedged transaction is recognized in earnings. Changes in the fair value of all other derivative contracts are recognized in earnings.

The cash impacts of settled derivatives are recorded as operating activities on the Consolidated Statements of Cash Flows.

See ~~additional information in~~ Notes 9, 10 and 11 for additional information.

Debt Discounts, Premiums and Deferred Financing Costs

Deferred financing costs include loan origination fees, underwriter fees, legal fees and other costs directly attributable to the issuance of debt. ~~Deferred~~Debt discounts, premiums and deferred financing costs are amortized over the estimated useful life of the related debt. ~~These~~Unamortized discounts, premiums and deferred financing costs are presented on the balance sheet as an adjustment to the related debt liabilities. See ~~additional information in~~ Note 8 for additional information.

Regulatory Accounting

Our regulated ~~Electric Utilities and Gas~~ Utilities are subject to cost-of-service regulation and earnings oversight from federal and state regulatory commissions. Our ~~Electric and Gas~~ Utilities account for income and expense items in accordance with accounting standards for regulated operations. These accounting policies differ in some respects from those used by our non-regulated businesses. Under these regulated operations accounting standards:

•

Certain costs, which would otherwise be charged to expense or OCI, are deferred as regulatory assets based on the expected ability to recover the costs in future rates.

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•

Certain credits, which would otherwise be reflected as income or OCI, are deferred as regulatory liabilities based on the expectation the amounts will be returned to customers in future rates, or because the amounts were collected in rates prior to the costs being incurred.

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Management continually assesses the probability of future recoveries and obligations associated with regulatory assets and liabilities. Factors such as the current regulatory environment, recently issued rate orders, and historical precedents are considered. As a result, we believe that the accounting prescribed under rate-based regulation remains appropriate and our regulatory assets are probable of recovery in current rates or in future rate proceedings.

If changes in the regulatory environment occur, we may no longer be eligible to apply this accounting treatment and may be required to eliminate regulatory assets and liabilities from our balance sheet. Such changes could adversely affect our results of operations, financial position or cash flows.

~~As of December 31, 2021 and 2020, we had total regulatory assets of $797 million and $278 million respectively, and total regulatory liabilities of $503 million and $533 million respectively.~~ See Note 2 for ~~further~~additional information.

Income Taxes

The Company is subject to federal income tax as well as income tax in various state and local jurisdictions. The Company and its subsidiaries file consolidated federal income tax returns. Each ~~entity~~subsidiary records both federal and state income taxes as if it were a separate taxpayer and consolidating expense adjustments are allocated to the subsidiaries based on separate company computations of taxable income or loss.

We use the asset and liability method in accounting for income taxes. Under the asset and liability method, deferred income taxes are recognized at currently enacted income tax rates, to reflect the tax effect of temporary differences between the financial and tax basis of assets and liabilities as well as operating loss and tax credit carryforwards. Such temporary differences are the result of provisions in the income tax law that either require or permit certain items to be reported on the income tax return in a different period than they are reported in the financial statements.

It is our policy to apply the flow-through method of accounting for ITCs. Under the flow-through method, ITCs are reflected in net income as a reduction to income tax expense in the year they qualify. An exception to this general policy is the deferral method, which applies to our regulated businesses. Such a method results in the ITC being amortized as a reduction to income tax expense over the estimated useful lives of the underlying property that gave rise to the credit.

We recognize interest income or interest expense and penalties related to income tax matters in Income tax ~~benefit (expense)~~expense on the Consolidated Statements of Income.

We have elected to account for transferable clean energy tax credits, including PTCs and ITCs within the provision for income taxes.

We account for uncertainty in income taxes recognized in the financial statements in accordance with the accounting standards for income taxes. The unrecognized tax benefit is classified in Other deferred credits and other liabilities or in Deferred income tax liabilities, net on the accompanying Consolidated Balance Sheets. See Note 15 for additional information.

Earnings per Share of Common Stock

Basic earnings per share is computed by dividing Net income available for common stock by the weighted average number of common shares outstanding during each year. Diluted earnings per share is computed by including all dilutive common shares outstanding during each year. Diluted common shares are primarily due to equity units, outstanding stock options, restricted stock and performance shares under our equity compensation plans.

A reconciliation of share amounts used to compute earnings per share is as follows for the years ended December 31 (in ~~thousands)~~millions, except earnings per share amounts):


	2023		2022		2021
Net income available for common stock	$	262.2	$	258.4	$	236.7

Weighted average shares - basic		67.0		64.9		63.2
Dilutive effect of equity compensation		0.1		0.1		0.1
Weighted average shares - diluted		67.1		65.0		63.3

Net income available for common stock, per share - Diluted	$	3.91	$	3.97	$	3.74

2021 2020 2019
Net income available for common stock $ 236,744 $ 227,608 $ 199,310
Weighted average shares - basic 63,219 62,378 60,662
Dilutive effect of:
Equity compensation 106 61 136
Weighted average shares - diluted 63,325 62,439 60,798
Net income available for common stock, per share - Diluted $ 3.74 $ 3.65 $ 3.28

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The following securities were excluded from the diluted earnings per share computation for the years ended December 31 because of their anti-dilutive ~~nature (in thousands):~~nature:


	2023		2022		2021
Equity compensation		46,275		—		13,101
Anti-dilutive shares excluded from computation of earnings per share		46,275		—		13,101

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2021 2020 2019
Equity compensation 13 60 1
Anti-dilutive shares excluded from computation of earnings per share 13 60 1

~~Non-controlling Interests~~

~~We account for changes in our controlling interests of subsidiaries according to ASC 810, Consolidation.~~ ASC 810 requires that the Company record such changes as equity transactions, recording no gain or loss on such a sale. GAAP requires that non-controlling interests in subsidiaries and affiliates be reported in the equity section of a company’s balance sheet. In addition, the amounts attributable to the non-controlling interest net income (loss) of those subsidiaries are reported separately in the consolidated statements of income and comprehensive income. See ~~Note 12~~ ~~for additional detail on non-controlling interests.~~

Share-Based Compensation

We account for our share-based compensation arrangements in accordance with ASC 718, Compensation-Stock Compensation, by recognizing compensation costs for all share-based awards over the respective service period for employee services received in exchange for an award of equity or equity-based compensation. Awards that will be settled in stock are accounted for as equity and the compensation expense is based on the grant date fair value. Awards that are settled in cash are accounted for as liabilities and the compensation expense is re-measured each period based on the current market price and performance achievement measures. See ~~additional information in~~ Note 14 for additional information.

Pension and Other Postretirement Plans

We recognize on our Consolidated Balance Sheets an asset or liability reflecting the funded status of pension and other postretirement plans with current-year changes in actuarial gains or losses recognized in AOCI, except for those plans at certain of our regulated utilities that can recover portions of their pension and postretirement obligations through future rates. All plan assets are recorded at fair value. We follow the measurement date provisions of ASC 715, .Compensation-Retirement Benefits, which require a year-end measurement date of plan assets and obligations for all defined benefit plans.

Recently Issued Accounting Standards

~~Facilitation of the Effects of Reference Rate Reform on Financial Reporting,~~

Improvements to Reportable Segment Disclosures, ASU ~~2020-04~~

2023-07

In ~~March 2020,~~November 2023, the FASB issued ASU ~~2020-04,~~2023-07, ~~Reference Rate Reform (Topic 848): Facilitation~~Improvements to Reportable Segment Disclosures, which expands public entities’ segment disclosures by requiring disclosure of significant segment expenses that are regularly reviewed by the ~~Effects~~CODM and included within each reported measure of ~~Reference Rate Reform~~segment profit or loss, an amount and description of its composition for other segment items, and interim disclosures of a reportable segment’s profit or loss and assets. The ASU also allows, in addition to the measure that is most consistent with GAAP, the disclosure of additional measures of segment profit or loss that are used by the CODM in assessing segment performance and deciding how to allocate resources. The ASU is effective for our Annual Report on ~~Financial Reporting, which was subsequently amended by ASU 2021-01. The standard provides relief~~Form 10-K for ~~companies preparing for discontinuation of interest rates, such as LIBOR,~~the fiscal year ended December 31, 2024, and allows optional expedients and exceptions for applying GAAP to contracts, hedging relationships and other transactions affected by reference rate reform if certain criteria are met. The amendments in this update are elective and are effective uponsubsequent interim periods, with early adoption permitted. We do not expect the ASU issuance through December 31, 2022. We are currently evaluating if we will apply the optional guidance as we assess the impact of the discontinuance of LIBOR on our current arrangements and the potentialto have an impact on our financial position, results of operations and cash ~~flows.~~

~~Recently Adopted Accounting Standards~~

~~Simplifying~~flows; however, are currently evaluating the ~~Accounting for~~impact on our consolidated financial statement disclosures.

Improvements to Income ~~Taxes,~~Tax Disclosures, ASU ~~2019-12~~

2023-09

In December ~~2019,~~2023, the FASB issued ASU ~~2019-12,~~2023-09, ~~Simplifying~~Improvements to Income Tax Disclosures, which expands public entities’ annual disclosures by requiring disclosure of tax rate reconciliation amounts and percentages for specific categories, income taxes paid disaggregated by federal and state taxes, and income tax expense disaggregated by federal and state taxes jurisdiction. The ASU is effective for our Annual Report on Form 10-K for the ~~Accounting for Income Taxes~~ ~~as part of its overall simplification initiative~~fiscal year ended December 31, 2025, with early adoption permitted. We do not expect the ASU to reduce costs and complexity in applying accounting standards while maintaining or improving the usefulness of the information provided to users of the financial statements. Amendments include removal of certain exceptions to the general principles of ASC 740, ~~Income Taxes~~, and simplification in several other areas such as accounting for a franchise tax (or similar tax) that is partially based on income. We adopted this standard prospectively on January 1, 2021. Adoption of this standard did not have an impact on our financial position, results of operations orand cash ~~flows.~~flows; however, are currently evaluating the impact on our consolidated financial statement disclosures.

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(2) REGULATORY MATTERS

We had the following regulatory assets and liabilities as of December 31 (in ~~thousands)~~millions):


	2023			2022
Regulatory assets
Winter Storm Uri (a)	$	199.6		$	348.0
Deferred energy and fuel cost adjustments (b)		55.1			72.6
Deferred gas cost adjustments (b)		4.1			12.2
Gas price derivatives (b)		5.1			8.8
Deferred taxes on AFUDC (b)		7.1			7.3
Employee benefit plans and related deferred taxes (c)		89.3			89.3
Environmental (b)		2.9			1.3
Loss on reacquired debt (b)		17.4			19.2
Deferred taxes on flow-through accounting (b)		74.7			69.5
Decommissioning costs (b)		2.4			3.5
Other regulatory assets (b)		22.4			21.3
Total regulatory assets		480.1			653.0
Less current regulatory assets		(175.7	)		(260.3	)
Regulatory assets, non-current	$	304.4		$	392.7

Regulatory liabilities
Deferred energy and gas costs (b)	$	88.9		$	41.7
Employee benefit plans and related deferred taxes (c)		36.2			38.9
Cost of removal (b)		181.9			175.6
Excess deferred income taxes (c)		247.1			254.8
Other regulatory liabilities (c)		12.5			7.6
Total regulatory liabilities		566.6			518.6
Less current regulatory liabilities		(98.9	)		(46.0	)
Regulatory liabilities, non-current	$	467.7		$	472.6

2021 2020
Regulatory assets
Winter Storm Uri (a)
$ 509,025 $ —
Deferred energy and fuel cost adjustments (b)
59,973 39,035
Deferred gas cost adjustments (b)
9,488 3,200
Gas price derivatives (b)
2,584 2,226
Deferred taxes on AFUDC (b)
7,457 7,491
Employee benefit plans and related deferred taxes (c)
88,923 116,598
Environmental (b)
1,385 1,413
Loss on reacquired debt (b)
21,011 22,864
Deferred taxes on flow-through accounting (b)
63,243 47,515
Decommissioning costs (b)
5,961 8,988
Gas supply contract termination (b)
— 2,524
Other regulatory assets (b)
27,549 26,404
Total regulatory assets 796,599 278,258
Less current regulatory assets (270,290) (51,676)
Regulatory assets, non-current $ 526,309 $ 226,582
Regulatory liabilities
Deferred energy and gas costs (b)
$ 6,113 $ 13,253
Employee benefit plan costs and related deferred taxes (c)
32,241 40,256
Cost of removal (b)
179,976 172,902
Excess deferred income taxes (c)
264,042 285,259
Other regulatory liabilities (c)
20,579 21,050
Total regulatory liabilities 502,951 532,720
Less current regulatory liabilities (17,574) (25,061)
Regulatory liabilities, non-current $ 485,377 $ 507,659
~~_____________________~~(a)

~~(a)~~ Timing of Winter Storm Uri incremental cost recovery and associated carrying costs vary by ~~jurisdiction and some jurisdictions are still subject to pending applications with the respective utility commission.~~jurisdiction. See further information below.

(b) ~~Recovery~~

Recovery/repayment of costs, but we are not allowed a rate of return.

(c)

In addition to recovery or repayment of costs, we are allowed a return on a portion of this amount or a reduction in rate base.

Regulatory assets represent items we expect to recover from customers through probable future rates.

Regulatory liabilities represent items we expect to refund to customers through probable future decreases in rates.

~~Recent Regulatory Activity~~

~~In February 2021, a prolonged period~~A majority of ~~historic cold temperatures across~~ the central United States covered all of our Utilities’ service territories, caused a substantial increase in heating and energy demand and contributed to unforeseeable and unprecedented market prices for natural gas and electricity. As a result of Winter Storm Uri, we incurred significant incremental fuel, purchased power and natural gas costs.

Our Utilities submitted Winter Storm Uri cost recovery applications in our state jurisdictions seeking to recover $546 million of these incremental costs through separate tracking mechanisms over a weighted-average recovery period of 3.5 years. These incremental cost estimatesexcess deferred taxes are subject to ~~adjustments~~the average rate assumption method, as ~~final decisions are issued~~prescribed by the ~~respective utility commissions. In these applications, we sought approval to recover carrying costs. For~~IRS, and will generally be amortized as a reduction of customer rates over the ~~year ended December 31, 2021, $4.1 million~~remaining lives of carrying costs were accrued and recorded to a regulatory asset. We are also seeking recovery of $13 million of previously disclosed Winter Storm Uri incremental costs through our existing regulatory mechanisms.

~~To date, Iowa Gas, Kansas Gas, Nebraska Gas and South Dakota Electric received commission approval for Winter Storm Uri cost recovery. Additionally,~~

Recent Regulatory Activity

Arkansas Gas and Wyoming Gas received approval for interim cost recovery subject to a final decision on carrying costs and recovery periods at a later date. Colorado Gas and Colorado Electric filed settlement agreements for their applications with final rates to be implemented in 2022. These settlements are subject to final approval by the CPUC. For the year ended December 31, 2021, our Utilities collected $40 million of Winter Storm Uri incremental costs and carrying costs from customers.

In 2020, regulatory proceedings resolved the last of the Company’s open dockets seeking approval of its TCJA plans. As a result, the Company relieved certain TCJA-related liabilities, which resulted in an increase to net income for the year ended December 31, 2020 of $4.0 million.

On December 30, 2020, an administrative law judge approved a settlement of Colorado Electric’s plan to provide $9.3 million of TCJA-related bill credits to its customers. The bill credits, which represent a disposition of excess deferred income tax benefits resulting from the TCJA, were delivered to customers in February 2021. The settlement agreement further provided for Colorado Electric to deliver annual bill credits to customers, starting in April 2021, until remaining excess deferred income tax regulatory liabilities associated with the TCJA are fully amortized. In April 2021, Colorado Electric delivered $0.9 million of TCJA-related bill credits to customers.

On January 26, 2021, the NPSC approved Nebraska Gas’s plan to provide $2.9 million of TCJA-related bill credits to its customers. The bill credits, which represent a disposition of excess deferred income tax benefits resulting from the TCJA, were delivered to customers in June 2021.

These Colorado Electric and Nebraska Gas bill credits, which resulted in a reduction in revenue, were offset by a reduction in income tax expense and resulted in a minimal impact to Net income for the year ended December 31, 2021.

As part of the 2021 rate review settlement agreement discussed further below, Kansas Gas will deliver $3.0 million of TCJA and state tax reform benefits to customers, annually, for each of the next three years starting in 2022 (approximately $9.1 million of total benefits expected to be delivered).

~~On December 10, 2021,~~4, 2023, Arkansas Gas filed a rate review with the APSC seeking recovery of significant infrastructure investments in its ~~7,200-mile~~7,200-mile natural gas pipeline system. The rate review requests ~~$22~~$44.1 million in new annual revenue with a capital structure of ~~50.9%~~48% equity and ~~49.1%~~52% debt and a return on equity of ~~10.2%~~10.5%. The request seeks to finalize rates in the fourth quarter of ~~2022.~~2024.

Table of Contents

Colorado Gas

RMNG Rate ~~Reviews and SSIR~~

Review

On ~~June 1, 2021,~~July 12, 2023, the CPUC approved a settlement agreement for RMNG's rate review filed on October 7, 2022. The agreement is expected to generate $8.2 million in new annual revenue and established a weighted average cost of capital of 6.93% with a capital structure that reflects an equity range of 50% to 52% and a debt range of 50% to 48% and a return on equity range of 9.5% to 9.7%. The settlement also shifted $8.3 million of SSIR revenue to base rates and terminated the SSIR. New rates were effective July 15, 2023.

Colorado Gas Rate Review

On May 9, 2023, Colorado Gas filed a rate review with the CPUC seeking recovery of significant infrastructure investments in its ~~7,000-mile~~10,000-mile natural gas pipeline system. In the fourth quarter of ~~2021,~~2023, Colorado Gas reached a settlement agreement with the CPUC staff and various intervenors for a general rate increase, which ~~was subsequently approved by an administrative law judge. N~~is subject to CPUC approval. T~~ew rates were effective January 1, 2022, and the~~he settlement is expected to generate ~~$6.5~~$20.2 million of new annual ~~revenue. The new~~ revenue ~~is based on~~with a capital structure of 50.87% equity and 49.13% debt and a return on equity of ~~9.2% and a capital structure of 50.3% equity and 49.7% debt.~~

9.3

On September 11, 2020, in accordance with the final Order from the rate review filed on February 1, 2019, Colorado Gas filed a SSIR proposal with the CPUC that would recover safety and integrity focused investments in its system for five years. On July 6, 2021, Colorado Gas received approval from the CPUC for its SSIR proposal to recover these investments for three years effective January 1, 2022. The return on SSIR investments%. If approved, new rates will be ~~the current weighted-average cost of long-term debt.~~

effective in February 2024.

~~Iowa~~

Wyoming Gas

~~Rate Review~~

On ~~June 1, 2021, Iowa~~May 18, 2023, Wyoming Gas filed a rate review with the ~~IUB~~WPSC seeking recovery of significant infrastructure investments in its ~~5,000-mile~~6,400-mile natural gas pipeline system. On ~~December 28, 2021,~~January 17, 2024, the ~~IUB~~WPSC approved a settlement agreement ~~with all intervening parties for a general rate increase. The settlement will shift $2.2 million of rider revenue to base rates and is expected to generate $3.7 million in new annual revenue with a~~ ~~capital structure of 50% equity and 50% debt and a return on equity of 9.6%. Final rates were enacted on January 1, 2022, and replaced~~ ~~interim rates effective June 11, 2021.~~

~~Kansas Gas~~

~~Rate Review~~

On May 7, 2021, Kansas Gas filed a rate review and rider renewal with the KCC seeking recovery of significant infrastructure investments in its 4,600-mile natural gas pipeline system. On December 30, 2021, Kansas Gas received approval from the KCC on its Global Settlement agreement with KCC staff and various intervenors for a general rate increase ~~and renewal of its safety and integrity rider. The settlement shifted $6.6 million of rider revenue to base rates, effective January 1, 2022, and also allowed rider renewal for at least~~ ~~five~~ ~~more years.~~

~~Nebraska Gas~~

~~Jurisdictional Consolidation and Rate Review~~

On January 26, 2021, Nebraska Gas received approval from the NPSC to consolidate rate schedules into a new, single statewide structure and recover significant infrastructure investments in its 13,000-mile natural gas pipeline system. Final rates were enacted on March 1, 2021, which ~~replaced interim rates effective September 1, 2020. The approval shifted $4.6 million of SSIR revenue to base rates and~~ is expected to generate ~~$6.5~~$13.9 million in new annual revenue with a capital structure of ~~50%~~51% equity and ~~50%~~49% debt and a return on equity of ~~9.5%~~9.85%. New rates were effective February 1, 2024. The ~~approval~~agreement also included an approval of a four-year extension of the ~~SSIR for five years~~Wyoming Integrity Rider.

Wyoming Electric

On June 1, 2022, Wyoming Electric filed a rate review with the WPSC seeking recovery of significant infrastructure investments in its 1,330-mile electric distribution and ~~an expansion of this mechanism across~~59-mile electric transmission systems. On January 26, 2023, the ~~consolidated jurisdictions.~~

~~South Dakota Electric~~

~~FERC Formula Rate~~

The annual rate determination process is governed by the FERC formula rate protocols established in the filed FERC joint-access transmission tariff. Effective January 1, 2021, the annual revenue requirement for the FERC Transmission Formula Rate was $26 million and included estimated weighted average capital additions of $5.0 million for 2020 and 2021 combined.

~~Table of Contents~~

~~Black Hills Wyoming and Wyoming Electric~~

~~Wygen I FERC Filing~~

~~On October 15, 2020, the FERC~~WPSC approved a settlement agreement ~~that represents~~with intervening parties for a ~~resolution~~general rate increase. The settlement is expected to generate $8.7 million in new annual revenue with a capital structure of ~~all issues in the joint application filed by Wyoming Electric~~52% equity and ~~Black Hills Wyoming~~48% debt and a return on ~~August 2, 2019 for~~equity of 9.75%. New rates were effective March 1, 2023. The agreement also included approval of a new ~~60 MW PPA. Under the terms of the settlement, Wyoming Electric~~rider that will ~~continue~~be filed annually to ~~receive 60 MW of capacity~~recover transmission investments and ~~energy from the Wygen I power plant. The new agreement commenced on January 1, 2022, replaced the existing PPA and will continue for 11 years.~~expenses.

(3) COMMITMENTS, CONTINGENCIES AND GUARANTEES

~~Power~~

Unconditional Purchase ~~and Transmission Services Agreements~~

Obligations

~~Through our subsidiaries, we~~

We have ~~the following significant long-term power purchase contracts~~various PPAs and transmission ~~services agreement with non-affiliated third-parties:~~

~~Subsidiary~~

~~Contract Type~~

~~Counterparty~~

~~Fuel Type~~

~~Quantity (MW)~~

~~Expiration Date~~

~~Colorado Electric~~ ~~(a)~~

~~PPA~~

~~PRPA~~

~~Wind~~

~~May 31, 2030~~

~~Colorado Electric~~

~~PPA~~

~~PRPA~~

~~Coal~~

~~June 30, 2024~~

~~Colorado Electric~~

~~PPA~~

~~TC Colorado Solar, LLC~~

~~Solar~~

~~200~~

~~Pending Completion~~ ~~(b)~~

~~South Dakota Electric~~

~~PPA~~

~~PacifiCorp~~

~~Coal~~

~~December 31, 2023~~

~~South Dakota Electric~~ ~~(c)~~

~~Transmission Services Agreement~~

~~PacifiCorp~~

~~N/A~~

~~December 31, 2023~~

~~South Dakota Electric~~

~~PPA~~

~~PRPA~~

~~Wind~~

~~September 30, 2029~~

~~South Dakota Electric~~

~~PPA~~

~~Fall River Solar, LLC~~

~~Solar~~

~~Pending Completion~~ ~~(d)~~

~~Wyoming Electric~~ ~~(e)~~

~~PPA~~

~~Happy Jack~~

~~Wind~~

~~September 3, 2028~~

~~Wyoming Electric~~ ~~(f)~~

~~PPA~~

~~Silver Sage~~

~~Wind~~

~~September 30, 2029~~

~~____________________~~

~~(a) Colorado~~service agreements, which extend to 2032, to support our Electric ~~sells the wind energy purchased under this PPA to City of Colorado Springs as discussed below.~~

(b) On January 31, 2022, TC Colorado Solar, LLC (TC Solar) provided termination notice of the PPA to Colorado Electric. Colorado Electric has disputed TC Solar’s right to termination and pursuant to the agreement, has initiated discussions with TC Solar. This agreement relates to a new solar facility to be constructed and would expire 15 years after construction completion.

~~(c) This is a firm point-to-point transmission service agreement providing the ability to deliver a maximum of 50 MW of capacity and associated energy.~~

~~(d) This agreement relates to a new solar facility currently being constructed and will expire 20 years after construction completion, which is expected by the end of 2022.~~

~~(e) Under a separate intercompany PSA, Wyoming Electric sells 50% of the facility output to South Dakota Electric.~~

~~(f) Under a separate intercompany PSA, Wyoming Electric sells 67% of the facility output to South Dakota Electric.~~

~~Costs under these agreements for the years ended December 31 were as follows (in thousands):~~

Subsidiary Contract Type Counterparty Fuel Type 2021 2020 2019
Colorado Electric PPA PRPA Wind $ 4,246 $ 2,791 $ —
Colorado Electric PPA PRPA Coal $ 4,447 $ 4,524 $ 1,802
South Dakota Electric PPA PacifiCorp Coal $ 8,923 $ 5,897 $ 7,477
South Dakota Electric Transmission Services Agreement PacifiCorp N/A $ 1,783 $ 1,776 $ 1,741
South Dakota Electric PPA PRPA Wind $ 596 $ 715 $ 688
Wyoming Electric PPA Happy Jack Wind $ 3,544 $ 4,531 $ 3,936
Wyoming Electric PPA Silver Sage Wind $ 4,717 $ 6,203 $ 5,366

~~Table of Contents~~

~~Power Purchase Agreements - Related Parties~~

~~Wyoming Electric had a PPA with Black Hills Wyoming scheduled to expire on December 31, 2022, which provided 60 MW of unit-contingent~~Utilities' capacity and energy from Black Hills Wyoming’s Wygen I facility. On October 15, 2020, the FERC approved a settlement agreement in the joint application filed by Wyoming Electric and Black Hills Wyoming on August 2, 2019 for approval of a new 60 MW PPA. Under the terms of the settlement, Wyoming Electric will continue to receive 60 MW of capacity and energy from the Wygen I facility. The new agreement commenced on January 1, 2022, replaced the existing PPA and will continue for 11 years.

~~Black Hills Electric Generation provides the wind energy generated from Busch Ranch II to Colorado Electric through a PPA, which expires in November 2044.~~

~~Black Hills Electric Generation provides its 14.5 MW share of energy generated from Busch Ranch I to Colorado Electric through a PPA, which expires in October 2037.~~

~~Colorado Electric’s PPA with Black Hills Colorado IPP, expiring on December 31, 2031, provides 200 MW of~~needs beyond our regulated power ~~to Colorado Electric from Black Hills Colorado IPP’s combined-cycle turbines.~~

plants' generation.

~~Purchase Commitments~~

We maintain natural gas supply contracts with several vendors that generally cover a period of up to one year. Commitments for estimated baseload gas volumes are established prior to the beginning of the month under these contracts on a monthly basis at contractually negotiated prices. Commitments for incremental daily purchases are made as necessary during the month based on requirements in accordance with the terms of the individual contract.

Our Gas Utilities segment has commitments to purchase physical quantities of natural gas under contracts indexed to various forward natural gas price curves. A portion of our gas purchases are purchased under evergreen contracts and are therefore, for purposes of this disclosure, carried out for 60 days. At December 31, 2021, the long-term commitments to purchase quantities of natural gas under contracts indexed to the following forward indices were as follows (in MMBtus):

2022 2023 2024 2025 2026 Thereafter
El Paso - Bondad Station 31,000 — — — — —
Kern River - Opal 9,300 — — — — —
El Paso - San Juan Basin 182,550 — — — — —
Enable East Pipeline 1,825,000 450,000 — — — —
Northern Natural Gas - Demarc 1,614 — — — — —
Northern Natural Gas - Ventura 1,810,000 1,840,000 1,820,000 — — —
Northwest Pipeline - Wyoming 1,531,700 1,510,000 910,000 — — —
ONEOK - Oklahoma 5,475,000 5,475,000 5,490,000 4,560,000 — —
Southern Star Central Gas Pipeline 113,130 — — — — —
Panhandle Eastern Pipe Line 1,609,680 2,737,500 — — — —
12,588,974 12,012,500 8,220,000 4,560,000 — —

~~Purchases under these contracts totaled $61 million, $25 million and $7 million for 2021, 2020 and 2019, respectively.~~

~~Other Gas Supply Agreements~~

Our Utilities ~~also~~ purchase natural gas, including transportation and storage capacity, to meet ~~customers’~~customers' needs under short-term and long-term purchase contracts. These contracts extend to 2044.

~~Table of Contents~~

The following is a schedule of unconditional purchase obligations required under the power purchase, transmission services and natural gas transportation and storage agreements (in ~~thousands)~~millions):

Power purchase and transmission services agreements (a)
Natural gas transportation and storage agreements
2022 $ 23,985 $ 143,750
2023 $ 11,678 $ 119,923
2024 $ 2,738 $ 82,428
2025 $ — $ 58,669
2026 $ — $ 36,503
Thereafter $ — $ 60,429


	PPAs (a)		Transmission Services Agreements		Natural gas supply, transportation and storage agreements
Future commitments for the year ending December 31,
2024	$	2.7	$	12.2	$	163.0
2025		—		—		135.0
2026		—		—		110.8
2027		—		—		79.5
2028		—		—		58.0
Thereafter		—		—		95.2
Total future commitments	$	2.7	$	12.2	$	641.5

____________________

(a) This schedule does not reflect renewable energy PPA future obligations since these agreements vary based on weather conditions.

~~Power Sales Agreements~~

~~Through our subsidiaries, we have the following significant long-term power sales contracts with non-affiliated third-parties:~~

•On July 1, 2020, Colorado Electric entered into a PSA with the City of Colorado Springs to sell up to 60 MW of wind energy purchased from PRPA under a separate 60 MW PPA discussed above. This PSA with the City of Colorado Springs expires June 30, 2025.

•During periods of reduced production at Wygen III in which MDU owns a portion of the capacity, or during periods when Wygen III is off-line, South Dakota Electric will provide MDU with 25 MW from our other generation facilities or from system purchases with reimbursement of costs by MDU. This agreement expires January 31, 2023.

•~~South Dakota Electric has an agreement to provide MDU capacity and energy up to a maximum of 50 MW in excess of Wygen III ownership. This agreement expires December 31, 2023.~~

•During periods of reduced production at Wygen III in which the City of Gillette owns a portion of the capacity, or during periods when Wygen III is off-line, South Dakota Electric will provide the City of Gillette with its first 23 MW from its other generating facilities or from system purchases with reimbursement of costs by the City of Gillette. Under this agreement, which has an initial term through September 3, 2034 and would be renewed annually on September 3 thereafter, South Dakota Electric will also provide the City of Gillette their operating component of spinning reserves.

•South Dakota Electric has an amended agreement, effective January 1, 2019, to supply up to 20 MW of energy and capacity to MEAN under a contract that expires May 31, 2028. The contract terms are from June 1 through May 31 for each interval listed below. This contract is unit-contingent based on the availability of our Neil Simpson II and Wygen III plants, with decreasing capacity purchased over the term of the agreement. The unit-contingent capacity amounts from Wygen III and Neil Simpson II are as follows:

Contract Years Total Contract Capacity Contingent Capacity Amounts on Wygen III Contingent Capacity Amounts on Neil Simpson II
2020-2022 15 MW 7 MW 8 MW
2022-2023 15 MW 8 MW 7 MW
2023-2028 10 MW 5 MW 5 MW

•~~South Dakota Electric had an agreement that expired December 31, 2021 to provide 50 MW of energy to Macquarie Energy, LLC during heavy and light load timing intervals.~~

•Black Hills Wyoming sold its CTII 40 MW natural gas-fired generating unit to the City of Gillette, Wyoming on September 3, 2014. Under the terms of the sale, Black Hills Wyoming entered into ancillary agreements to operate CTII, provide use of shared facilities including a ground lease and dispatch generation services. In addition, the agreement includes a 20-year Economy Energy PSA that contains a sharing arrangement in which the parties share the savings of wholesale power purchases made when market power prices are less than the cost of operating the generating unit.

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Lease Agreements

Lessee

We lease from third parties certain office and operation center facilities, communication tower sites, equipment and materials storage. Our leases have remaining terms ranging from less than one year to 3432 years, including options to extend that are reasonably certain to be exercised. Our operating and finance leases were not material to the Company’s Consolidated Financial statements.

Lessor

We lease to third parties certain generating station ground leases, communication tower sites and a natural gas pipeline. These leases have remaining terms ranging from less than one year to ~~34 years.~~31 years. Lease revenue was not material for the years ended December 31, ~~2021, 2020~~2023, 2022 and ~~2019.~~

2021.

As of December 31, ~~2021,~~2023, scheduled maturities of operating lease payments to be received in future years were as follows (in ~~thousands)~~millions):


	Operating Leases
2024	$	2.2
2025		2.2
2026		2.0
2027		1.9
2028		1.9
Thereafter		48.3
Total lease receivables	$	58.5

Operating Leases
2022 $ 2,173
2023 2,204
2024 2,125
2025 2,070
2026 1,881
Thereafter 51,233
Total lease receivables $ 61,686

Environmental Matters

We are subject to costs resulting from a number of federal, state and local laws and regulations which affect future planning and existing operations. Laws and regulations can result in increased capital expenditures, operating and other costs as a result of compliance, remediation and monitoring obligations. Due to the environmental issues discussed below, we may be required to modify, curtail, replace or cease operating certain facilities or operations to comply with statutes, regulations and other requirements of regulatory bodies.

Reclamation Liability

For our Pueblo Airport Generation site, we posted a bond ~~of $4.1 million~~ with the State of Colorado to cover the costs of remediation for a waste water containment pond permitted to provide wastewater storage and processing for this ~~zero discharge~~zero-discharge facility. The reclamation liability is recorded at the present value of the estimated future cost to reclaim the land.

Under our land leases for our wind generation facilities, we are required to reclaim land where we have placed wind turbines. The reclamation liabilities are recorded at the present value of the estimated future cost to reclaim the land.

Under its mining permit, WRDC is required to reclaim all land where it has mined reserves. The reclamation liability is recorded at the present value of the estimated future cost to reclaim the land.

See Note 7 for additional information.

Manufactured Gas ~~Processing~~

Plant

In 2008, we acquired whole and partial liabilities for former manufactured gas ~~processing~~plant sites in Nebraska and Iowa, which were previously used to convert coal to natural gas. The acquisition provided for an insurance recovery, now valued at ~~$1.2~~$1.4 million recorded in Other assets, non-current on our Consolidated Balance Sheets, which will be used to help offset remediation costs. We also have a ~~$1.4~~$2.7 million regulatory asset for manufactured gas ~~processing~~plant sites; see Note 2 for additional information.

As of December 31, ~~2021,~~2023, we had ~~$2.6~~$4.1 million and $0.6 million accrued for remediation of ~~Iowa’s~~the manufactured gas ~~processing site as the landowner. As of December 31, 2021, we had $0.6 million accrued for remediation of Nebraska’s manufactured gas processing site as the land owner. These~~plant sites in Iowa and Nebraska, respectively. Iowa's liabilities are included in Accrued Liabilities and Nebraska's liabilities are included in Other deferred credits and other liabilities on our Consolidated Balance Sheets. The remediation cost estimate could change materially due to results of further investigations, actions of environmental agencies or the financial viability of other responsible parties.

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Contingencies and Legal Proceedings

In the normal course of business, we are subject to various lawsuits, actions, proceedings, claims and other matters asserted under laws and regulations. We believe the amounts provided in the consolidated financial statements to satisfy alleged liabilities are adequate in light of the probable and estimable contingencies. However, there can be no assurance that the actual amounts required to satisfy alleged liabilities from various legal proceedings, claims and other matters discussed, and to comply with applicable laws and regulations will not exceed the amounts reflected in the consolidated financial statements.

We record gain contingencies when realized and expected recoveries under applicable insurance contracts when we are assured of recovery.

GT Resources, LLC v. Black Hills Corporation, Case No. 2020CV30751 (U.S. District Court for the City and County of Denver, Colorado)

On April 13, 2022, a jury awarded $41 million for claims made by GT Resources, LLC (“GTR”) against BHC and two of its subsidiaries (Black Hills Exploration and Production, Inc. and Black Hills Gas Resources, Inc.), which ceased oil and natural gas operations in 2018 as part of BHC’s decision to exit the exploration and production business. The claims involved a dispute over a 2.3 million-acre concession award in Costa Rica which was acquired by a BHC subsidiary in 2003. GTR retained rights to receive a royalty interest on any hydrocarbon production from the concession upon the occurrence of contingent events. GTR contended that BHC and its subsidiaries failed to adequately pursue the opportunity and failed to transfer the concession to GTR. We appealed this verdict to the Colorado Court of Appeals. On October 19, 2023, the Appellate Court reversed and remanded the case with directions limiting any retrial to the narrow issue of whether there was improper interference with the prospective conveyance of the concession. We continue to believe this lawsuit has no merit and will vigorously defend it. At this time, we do not believe any losses from this matter will have a material impact on our financial position, results of operations and cash flows.

Gain Contingency -- Wygen 1 Business Interruption Insurance Recovery

In September 2021, Wygen I experienced an unplanned outage that continued until December 2021. For the year ended December 31, 2021, the outage resulted in lost revenues at our subsidiaries Black Hills Wyoming and WRDC. A claim for these losses was submitted under our business interruption insurance policy. During the third quarter of 2023 we recovered $5.0 million from our business interruption insurance, which was recognized as Revenue in our Consolidated Statements of Income for year ended December 31, 2023.

Indemnification

In the normal course of business, we enter into agreements that include indemnification in favor of third parties, such as information technology agreements, purchase and sale agreements and lease contracts. We have also agreed to indemnify our directors, officers and employees in accordance with our articles of incorporation, as amended. Certain agreements do not contain any limits on our liability and therefore, it is not possible to estimate our potential liability under these indemnifications. In certain cases, we have recourse against third parties with respect to these indemnities. Further, we maintain insurance policies that may provide coverage against certain claims under these indemnities.

Guarantees

We have entered into various parent company-level guarantees providing financial or performance assurance to third parties on behalf of certain of our subsidiaries. These guarantees do not represent incremental consolidated obligations, but rather, represent guarantees of subsidiary obligations to allow those subsidiaries to conduct business without posting other forms of assurance. The agreements, which are off-balance sheet commitments, include support for business operations, indemnification for reclamation and surety bonds. The guarantees were entered into in the normal course of business. To the extent liabilities are incurred as a result of activities covered by these guarantees, such liabilities are included in our Consolidated Balance Sheets.

~~See Note 8 for additional information on our off-balance sheet Letters of Credit commitment.~~

We had the following guarantees in place as of (in ~~thousands)~~millions):


	Maximum Exposure at
Nature of Guarantee	December 31, 2023
Indemnification for reclamation/surety bonds	$	100.9
Guarantees supporting business transactions		462.9
Total guarantees	$	563.8


	~~Maximum Exposure at~~
~~Nature of Guarantee~~	~~December 31, 2021~~
~~Indemnification for reclamation/surety bonds~~	$	~~55,867~~
~~Guarantees supporting business transactions~~	$	~~370,558~~
	$	~~426,425~~

Table of Contents

~~(4)~~

The following tables depict the disaggregation of revenue, including intercompany revenue, from contracts with customers by customer type and timing of revenue recognition for each of the reportable segments, for the years ended December 31, ~~2021, 2020~~2023, 2022 and ~~2019.~~2021. Sales tax and other similar taxes are excluded from revenues.

Year ended December 31, 2021 Electric Utilities Gas Utilities Inter-company Revenues Total
Customer types: (in thousands)
Retail $ 711,448 $ 913,725 $ — $ 1,625,173
Transportation — 158,053 (428) 157,625
Wholesale 30,848 — — 30,848
Market - off-system sales 41,682 396 — 42,078
Transmission/Other 52,945 39,365 (17,200) 75,110
Revenue from contracts with customers 836,923 1,111,539 (17,628) 1,930,834
Other revenues 5,335 13,326 (393) 18,268
Total revenues $ 842,258 $ 1,124,865 $ (18,021) $ 1,949,102
Timing of revenue recognition:
Services transferred at a point in time $ 27,141 $ — $ — $ 27,141
Services transferred over time 809,782 1,111,539 (17,628) 1,903,693
Revenue from contracts with customers $ 836,923 $ 1,111,539 $ (17,628) $ 1,930,834

Year ended December 31, 2020 Electric Utilities Gas Utilities Inter-company Revenues Total
Customer types: (in thousands)
Retail $ 636,902 $ 765,922 $ — $ 1,402,824
Transportation — 154,581 (526) 154,055
Wholesale 24,845 — — 24,845
Market - off-system sales 15,512 260 — 15,772
Transmission/Other 55,422 43,658 (15,772) 83,308
Revenue from contracts with customers 732,681 964,421 (16,298) 1,680,804
Other revenues 6,176 10,249 (288) 16,137
Total revenues $ 738,857 $ 974,670 $ (16,586) $ 1,696,941
Timing of revenue recognition:
Services transferred at a point in time $ 27,089 $ — $ — $ 27,089
Services transferred over time 705,592 964,421 (16,298) 1,653,715
Revenue from contracts with customers $ 732,681 $ 964,421 $ (16,298) $ 1,680,804


Year ended December 31, 2023	Electric Utilities		Gas Utilities		Inter-segment Eliminations			Total
Customer types:	(in millions)
Retail	$	697.7	$	1,248.8	$	—		$	1,946.5
Transportation		—		176.8		(0.5	)		176.3
Wholesale		34.2		—		—			34.2
Market - off-system sales		50.9		0.4		—			51.3
Transmission/Other		71.4		39.4		(17.4	)		93.4
Revenue from contracts with customers		854.2		1,465.4		(17.9	)		2,301.7
Other revenues		10.8		18.8		—			29.6
Total revenues	$	865.0	$	1,484.2	$	(17.9	)	$	2,331.3

Timing of revenue recognition:
Services transferred at a point in time	$	31.5	$	—	$	—		$	31.5
Services transferred over time		822.7		1,465.4		(17.9	)		2,270.2
Revenue from contracts with customers	$	854.2	$	1,465.4	$	(17.9	)	$	2,301.7


Year ended December 31, 2022	Electric Utilities		Gas Utilities		Inter-segment Eliminations			Total
Customer types:	(in millions)
Retail	$	739.7	$	1,453.3	$	—		$	2,193.0
Transportation		—		173.3		(0.4	)		172.9
Wholesale		44.8		—		—			44.8
Market - off-system sales		48.6		0.8		—			49.4
Transmission/Other		61.5		37.9		(16.6	)		82.8
Revenue from contracts with customers		894.6		1,665.3		(17.0	)		2,542.9
Other revenues		5.6		3.8		(0.5	)		8.9
Total revenues	$	900.2	$	1,669.1	$	(17.5	)	$	2,551.8

Timing of revenue recognition:
Services transferred at a point in time	$	30.4	$	—	$	—		$	30.4
Services transferred over time		864.2		1,665.3		(17.0	)		2,512.5
Revenue from contracts with customers	$	894.6	$	1,665.3	$	(17.0	)	$	2,542.9


Year ended December 31, 2021	Electric Utilities		Gas Utilities		Inter-segment Eliminations			Total
Customer types:	(in millions)
Retail	$	711.5	$	913.7	$	—		$	1,625.2
Transportation		—		158.1		(0.4	)		157.7
Wholesale		30.8		—		—			30.8
Market - off-system sales		41.7		0.4		—			42.1
Transmission/Other		52.9		39.4		(17.2	)		75.1
Revenue from contracts with customers		836.9		1,111.6		(17.6	)		1,930.9
Other revenues		5.3		13.3		(0.4	)		18.2
Total revenues	$	842.2	$	1,124.9	$	(18.0	)	$	1,949.1

Timing of revenue recognition:
Services transferred at a point in time	$	27.1	$	—	$	—		$	27.1
Services transferred over time		809.8		1,111.6		(17.6	)		1,903.8
Revenue from contracts with customers	$	836.9	$	1,111.6	$	(17.6	)	$	1,930.9

Table of Contents

Year ended December 31, 2019 Electric Utilities Gas Utilities Inter-company Revenues Total
Customer types: (in thousands)
Retail $ 632,936 $ 817,840 $ — $ 1,450,776
Transportation — 143,390 (1,042) 142,348
Wholesale 28,464 — — 28,464
Market - off-system sales 16,081 691 — 16,772
Transmission/Other 53,750 47,725 (13,443) 88,032
Revenue from contracts with customers 731,231 1,009,646 (14,485) 1,726,392
Other revenues 8,124 384 — 8,508
Total revenues $ 739,355 $ 1,010,030 $ (14,485) $ 1,734,900
Timing of revenue recognition:
Services transferred at a point in time $ 27,180 $ — $ — $ 27,180
Services transferred over time 704,051 1,009,646 (14,485) 1,699,212
Revenue from contracts with customers $ 731,231 $ 1,009,646 $ (14,485) $ 1,726,392

(5) PROPERTY, PLANT AND EQUIPMENT

Property, plant and equipment at December 31 consisted of the following (dollars in ~~thousands)~~millions):

2021 2020 Lives (in years)
Electric Utilities Property, Plant and Equipment Weighted Average Useful Life (in years) Property, Plant and Equipment Weighted Average Useful Life (in years) Minimum Maximum
Electric plant:
Production $ 1,452,055 41 $ 1,417,951 40 32 45
Electric transmission 546,126 49 517,794 49 43 50
Electric distribution 1,000,619 47 959,453 46 45 49
Integrated Generation 720,490 30 716,479 31 2 59
Plant acquisition adjustment (a)
4,870 32 4,870 32 32 32
General 266,935 28 259,010 28 25 31
Total electric plant in service 3,991,095 3,875,557
Construction work in progress 181,451 95,266
Total electric plant 4,172,546 3,970,823
Less accumulated depreciation and depletion (1,016,738) (960,993)
Electric plant net of accumulated depreciation and depletion $ 3,155,808 $ 3,009,830


	2023				2022				Lives (in years)
Electric Utilities	Property, Plant and Equipment			Weighted Average Useful Life (in years)	Property, Plant and Equipment			Weighted Average Useful Life (in years)	Minimum	Maximum
Electric plant:
Production	$	1,492.8		40	$	1,482.1		41	32	45
Electric transmission		737.4		48		632.9		48	42	51
Electric distribution		1,146.9		47		1,082.5		47	45	50
Integrated Generation		720.0		30		713.5		31	19	38
Plant acquisition adjustment (a)		4.9		32		4.9		32	32	32
General		291.7		27		274.8		27	24	28
Total electric plant in service		4,393.7				4,190.7
Construction work in progress		123.1				153.0
Total electric plant		4,516.8				4,343.7
Less accumulated depreciation and depletion		(1,207.7	)			(1,104.1	)
Electric plant net of accumulated depreciation and depletion	$	3,309.1			$	3,239.6

____________________

(a) The plant acquisition adjustment, which relates to the acquisition of our ownership interest in Wyodak Plant, is included in rate base and is being recovered with 97 years remaining.

~~Table of Contents~~

2021 2020 Lives (in years)
Gas Utilities Property, Plant and Equipment Weighted Average Useful Life (in years) Property, Plant and Equipment Weighted Average Useful Life (in years) Minimum Maximum
Gas plant:
Production $ 14,841 40 $ 15,603 40 24 46
Gas transmission 645,550 58 578,278 54 22 71
Gas distribution 2,394,352 53 2,115,082 53 45 59
Cushion gas - depreciable (a)
3,539 28 3,539 28 28 28
Cushion gas - not depreciable (a)
42,478 N/A 39,184 N/A N/A N/A
Storage 56,289 38 55,481 38 27 52
General 474,964 21 438,217 19 3 23
Total gas plant in service 3,632,013 3,245,384
Construction work in progress 37,860 67,229
Total gas plant 3,669,873 3,312,613
Less accumulated depreciation (389,115) (323,679)
Gas plant net of accumulated depreciation $ 3,280,758 $ 2,988,934


	2023				2022				Lives (in years)
Gas Utilities	Property, Plant and Equipment			Weighted Average Useful Life (in years)	Property, Plant and Equipment			Weighted Average Useful Life (in years)	Minimum	Maximum
Gas plant:
Production	$	21.0		45	$	17.8		45	24	47
Gas transmission		759.5		58		695.4		58	32	72
Gas distribution		2,860.0		57		2,620.2		57	48	61
Cushion gas - not depreciable (a)		58.2		N/A		63.1		N/A	N/A	N/A
Storage		71.4		42		65.8		41	36	49
General		571.8		22		497.4		23	20	25
Total gas plant in service		4,341.9				3,959.7
Construction work in progress		39.2				52.0
Total gas plant		4,381.1				4,011.7
Less accumulated depreciation		(588.3	)			(471.0	)
Gas plant net of accumulated depreciation	$	3,792.8			$	3,540.7

____________________

(a) Depreciation of Cushion Gas is determined by the respective regulatory jurisdiction in which the Cushion Gas resides. In 2022, assets classified as Cushion gas - depreciable were fully depreciated and removed from gross plant in service and accumulated depreciation.


	2023				2022				Lives (in years)
Corporate	Property, Plant and Equipment			Weighted Average Useful Life (in years)	Property, Plant and Equipment			Weighted Average Useful Life (in years)	Minimum	Maximum
Total plant in service	$	5.7		10	$	5.7		11	4	23
Construction work in progress		13.6				13.7
Total gross property, plant and equipment		19.3				19.4
Less accumulated depreciation		(1.9	)			(1.8	)
Total net of accumulated depreciation	$	17.4			$	17.6

2021 Lives (in years)
Property, Plant and Equipment Construction Work in Progress Total Property Plant and Equipment Less Accumulated Depreciation Net Property, Plant and Equipment Weighted Average Useful Life Minimum Maximum
Corporate $ 5,694 $ 8,460 $ 14,154 $ (1,544) $ 12,610 10 10 22

2020 Lives (in years)
Property, Plant and Equipment Construction Work in Progress Total Property Plant and Equipment Less Accumulated Depreciation Net Property, Plant and Equipment Weighted Average Useful Life Minimum Maximum
Corporate $ 5,692 $ 16,402 $ 22,094 $ (1,144) $ 20,950 10 10 22

(6) JOINTLY OWNED FACILITIES

Our consolidated financial statements include our share of several jointly-owned facilities as described below. Our share of the facilities’ expenses ~~are~~is reflected in the appropriate categories of operating expenses in the Consolidated Statements of Income. Each owner of the facility is responsible for financing its investment in the jointly-owned facilities.

At December 31, 2023, our interests in jointly-owned generating facilities and transmission systems were (in millions):


	Ownership Interest			Plant in Service		Construction Work in Progress		Less Accumulated Depreciation			Plant Net of Accumulated Depreciation
Wyodak Plant (a)		20	%	$	122.3	$	—	$	(73.4	)	$	48.9
Transmission Tie		35	%	$	24.5	$	0.3	$	(7.8	)	$	17.0
Wygen III (b)		52	%	$	145.3	$	0.3	$	(32.2	)	$	113.4
Wygen I (c)		76.5	%	$	116.0	$	0.8	$	(60.1	)	$	56.7

(a)

~~Wyodak Plant~~

South Dakota Electric owns a 20% interest in the Wyodak Plant while PacifiCorp owns the remaining ownership interest and operates the Wyodak Plant. South Dakota Electric receives its proportionate share of the Wyodak Plant’s capacity and is committed to pay its proportionate share of its additions, replacements and operating and maintenance expenses. In addition to supplying South Dakota Electric with coal for its share of the Wyodak Plant, our mine supplies PacifiCorp’s share of the coal under a separate long-term ~~agreement.~~agreement through December 31, 2026, with an annual renewal option for one-year extensions. This coal supply agreement is collateralized by a mortgage on and a security interest in some of WRDC’s coal reserves.

~~Table of Contents~~

(b)

~~Transmission Tie~~

South Dakota Electric owns a 35% interest in, and is the operator of, the Converter Station Site and South Rapid City Interconnection (the Transmission Tie), an AC-DC-AC transmission tie. Basin Electric Power Cooperative owns the remaining 65% interest in the Transmission Tie. South Dakota Electric is committed to pay its proportionate share of the additions and replacements and operating and maintenance expenses of the Transmission Tie.

~~Wygen III~~

South Dakota Electric owns 52% of the Wygen III generation facility. MDU and the City of Gillette each own an undivided ownership interest in Wygen III and are obligated to make payments for costs associated with administrative services and their proportionate share of the costs of operating the plant for the life of the facility. South Dakota Electric retains responsibility for plant operations. ~~Our mine~~WRDC supplies fuel to Wygen III for the life of the plant.

~~Wygen I~~

(c)

Black Hills Wyoming owns 76.5% of the Wygen I plant while MEAN owns the remaining ownership interest. MEAN is obligated to make payments for its share of the costs associated with administrative services, plant operations and coal supply provided by our mine during the life of the facility. Black Hills Wyoming retains responsibility for plant operations.

~~At December 31, 2021, our interests in jointly-owned generating facilities and transmission systems were (in thousands):~~

Plant in Service Construction Work in Progress Less Accumulated Depreciation Plant Net of Accumulated Depreciation
Wyodak Plant $ 118,637 $ 882 $ (70,468) $ 49,051
Transmission Tie $ 24,544 $ 287 $ (6,922) $ 17,909
Wygen III $ 142,199 $ 635 $ (26,598) $ 116,236
Wygen I $ 120,565 $ 399 $ (53,784) $ 67,180

~~Jointly Owned Facilities - Related Party~~

~~Busch Ranch~~ WRDC supplies fuel to Wygen I

~~Colorado Electric owns 50% of Busch Ranch I while Black Hills Electric Generation owns the remaining 50% ownership interest. Each company is obligated to make payments~~ for ~~costs associated with their proportionate share of the costs of operating the wind farm over~~ the life of the facility. Colorado Electric retains responsibility for operations of the wind farm. Black Hills Electric Generation provides its share of energy from the wind farm to Colorado Electric through a PPA, which expires in October 2037.

~~Cheyenne Prairie~~

Cheyenne Prairie serves the utility customers of South Dakota Electric and Wyoming Electric. The facility includes one simple-cycle, 40 MW combustion turbine that is wholly-owned by Wyoming Electric and one combined-cycle, 100 MW unit that is jointly-owned by South Dakota Electric (58 MW) and Wyoming Electric (42 MW). BHSC is responsible for plant operations.

~~Corriedale~~

Corriedale serves as the dedicated wind energy supply for Renewable Ready customers in South Dakota and Wyoming. The 52.5 MW wind farm is jointly-owned by South Dakota Electric (32.5 MW) and Wyoming Electric (20 MW). BHSC is responsible for operations of the wind farm.

87plant.

~~Table of Contents~~

(7) ASSET RETIREMENT OBLIGATIONS

We have identified legal obligations related to reclamation of mining sites; removal of fuel tanks, transformers containing polychlorinated biphenyls, ~~and~~ an evaporation pond; and reclamation of wind turbine sites at our Electric Utilities segment. In addition, we have identified legal obligations related to retirement of gas pipelines, wells and ~~wells~~compressor stations at our Gas Utilities and removal of asbestos at our Utilities. We periodically review and update estimated costs related to these AROs. The actual cost may vary from estimates due to regulatory requirements, changes in technology and increased labor, materials and equipment costs.

The following tables present the details of AROs which are included on the accompanying Consolidated Balance Sheets in Other deferred credits and other liabilities (in ~~thousands)~~millions):

December 31, 2020 Liabilities Incurred Liabilities Settled Accretion Revisions to Prior Estimates December 31, 2021
Electric Utilities $ 29,157 $ — $ (978) $ 1,315 $ 595 $ 30,089
Gas Utilities (a)
42,274 — (66) 1,733 1,514 45,455
Total 71,431 $ — $ (1,044) $ 3,048 $ 2,109 $ 75,544


	December 31, 2022		Liabilities Incurred		Liabilities Settled		Accretion		Revisions to Prior Estimates			December 31, 2023
Electric Utilities	$	27.6	$	—	$	—	$	1.2	$	(0.1	)	$	28.7
Gas Utilities (a)		61.3		6.7		—		2.3		(2.8	)		67.5
Total	$	88.9	$	6.7	$	—	$	3.5	$	(2.9	)	$	96.2


	December 31, 2021		Liabilities Incurred		Liabilities Settled			Accretion		Revisions to Prior Estimates			December 31, 2022
Electric Utilities	$	30.1	$	—	$	(3.0	)	$	1.4	$	(0.9	)	$	27.6
Gas Utilities (a)		45.5		—		(0.2	)		2.0		14.0			61.3
Total	$	75.6	$	—	$	(3.2	)	$	3.4	$	13.1		$	88.9

(a)

December 31, 2019 Liabilities Incurred Liabilities Settled Accretion Revisions to Prior Estimates December 31, 2020
Electric Utilities (b) (c)
$ 28,120 $ 1,217 $ (185) $ 1,230 $ (1,225) $ 29,157
Gas Utilities (d)
36,085 4,782 (132) 1,539 — 42,274
Total $ 64,205 $ 5,999 $ (317) $ 2,769 $ (1,225) $ 71,431

~~____________________~~

~~(a)~~ The Revisions to Prior Estimates were primarily driven by changes in estimates associated with natural gas ~~wells.~~

~~(b) Liabilities incurred were related to new wind assets.~~

~~(c) The Revisions to Prior Estimates were primarily driven by changes in estimated costs associated with back-filling the pit with overburden removed during the mining process.~~

~~(d) Liabilities incurred were driven by an increase in gas pipeline miles; which increases our legal liability for retirement of gas pipelines, specifically to purge~~wells and ~~cap these lines in accordance with federal regulations.~~compressor stations.

We also have legally required AROs related to certain assets within our electric transmission and distribution systems. These retirement obligations are pursuant to an easement or franchise agreement and are only required if we discontinue our utility service under such easement or franchise agreement. Accordingly, it is not possible to estimate a time period when these obligations could be settled, and therefore, a liability for the cost of these obligations cannot be measured at this time.

~~We had the following Notes payable outstanding at the Consolidated Balance Sheets date (in thousands):~~

Letters of Credit (a)

~~____________________~~

~~(a) Letters of credit are off-balance sheet commitments that reduce the borrowing capacity available on our corporate Revolving Credit Facility.~~

On ~~July 19, 2021,~~May 9, 2023, we amended and restated our corporate Revolving Credit Facility, ~~maintaining total commitments~~which replaced LIBOR as a benchmark interest rate with the SOFR. The adoption of ~~$750~~SOFR as a benchmark interest rate was in advance of the scheduled elimination of LIBOR as a benchmark interest rate on June 30, 2023. No other significant terms or conditions, including borrowing capacity, credit spreads or financial covenants were modified under these amendments and restatements.

We have a $750 million ~~and extending the term through~~Revolving Credit Facility that matures on July 19, 2026, with ~~2 one year~~twoone-year extension options (subject to consent from lenders). This ~~Revolving Credit Facility is similar to the former revolving credit~~ facility ~~which~~ includes an accordion feature that allows us to increase total commitments up to ~~$1.0~~$1.0 billion with the consent of the administrative agent, the issuing agents and each bank increasing or providing a new commitment. Borrowings continue to be available under a base rate or various ~~Eurodollar~~SOFR rate options. The interest costs associated with the letters of credit or borrowings and the commitment fee under the Revolving Credit Facility are determined based upon our Corporate credit rating from S&P, Fitch and Moody's for our senior unsecured long-term debt. Based on our current credit ratings, the margins for base rate borrowings, ~~Eurodollar~~SOFR borrowings and letters of credit were ~~0.125%~~0.125%, ~~1.125%~~1.125% and ~~1.125%~~1.125%, respectively, at December 31, ~~2021.~~2023. Based on our credit ratings, ~~a 0.175%~~the commitment fee on unused amounts was ~~charged on the unused amount at December 31, 2021.~~

We have a ~~$750~~$750 million, unsecured CP Program that is backstopped by the Revolving Credit Facility. Amounts outstanding under the Revolving Credit Facility and the CP Program, either individually or in the aggregate, cannot exceed ~~$750~~$750 million. The notes issued under the CP Program may have maturities not to exceed 397 days from the date of issuance and bear interest (or are sold at par less a discount representing an interest factor) based on, among other things, the size and maturity date of the note, the frequency of the issuance and our credit ratings. Under the CP Program, any borrowings rank equally with our unsecured debt. Notes under the CP Program are not registered and are offered and issued pursuant to a registration exemption.

Our ~~net short-term~~Revolving Credit Facility and CP Program, which are classified as Notes payable on the Consolidated Balance Sheets, had the following borrowings, ~~(payments) during 2021 were $186 million. As~~outstanding letters of credit, and available capacity at December 31 ~~2021,~~(dollars in millions):


	2023		2022
Amount outstanding	$	—	$	535.6
Letters of credit (a)		3.7		24.6
Available capacity		746.3		189.8
Weighted average interest rates	N/A			4.88	%

(a)

Letters of credit are off-balance sheet commitments that reduce the ~~weighted average interest rate~~borrowing capacity available on ~~short-term borrowings~~our corporate Revolving Credit Facility.

Revolving Credit Facility and CP Program borrowing activity for the years ended December 31 was ~~0.30%.~~as follows (in millions):


	2023			2022
Maximum amount outstanding (based on daily outstanding balances)	$	548.7		$	572.3
Average amount outstanding (based on daily outstanding balances)		81.7			390.7
Weighted average interest rates		4.91	%		2.11	%

Deferred Financing Costs on the Revolving Credit Facility

Total accumulated deferred financing costs on the Revolving Credit Facility of ~~$8.9~~$8.9 million are being amortized over its estimated useful life and were included in Interest expense on the accompanying Consolidated Statements of Income. See below for additional details.

On February 24, 2021, we entered into a nine-month, $800 million unsecured term loan to provide additional liquidity and to meet our cash needs related to the incremental fuel, purchased power and natural gas costs from Winter Storm Uri. The term loan, carried no prepayment penalty and was subject to the same covenant requirements as our Revolving Credit Facility. We repaid $200 million of this term loan in the first quarter of 2021. Proceeds from the August 26, 2021 public debt offering (discussed below) were used to repay the remaining balance on this term loan.

Long-term debt outstanding was as follows (dollars in ~~thousands)~~millions):

Interest Rate at Balance Outstanding
Due Date December 31, 2021 December 31, 2021 December 31, 2020
Corporate
Senior unsecured notes due 2023 November 30, 2023 4.25% $ 525,000 $ 525,000
Senior unsecured notes due 2024 August 23, 2024 1.04% 600,000 —
Senior unsecured notes due 2026 January 15, 2026 3.95% 300,000 300,000
Senior unsecured notes due 2027 January 15, 2027 3.15% 400,000 400,000
Senior unsecured notes, due 2029 October 15, 2029 3.05% 400,000 400,000
Senior unsecured notes, due 2030 June 15, 2030 2.50% 400,000 400,000
Senior unsecured notes due 2033 May 1, 2033 4.35% 400,000 400,000
Senior unsecured notes, due 2046 September 15, 2046 4.20% 300,000 300,000
Senior unsecured notes, due 2049 October 15, 2049 3.88% 300,000 300,000
Corporate term loan due 2021 June 7, 2021 N/A — 1,436
Total Corporate debt 3,625,000 3,026,436
Less unamortized debt discount (6,125) (7,013)
Total Corporate debt, net 3,618,875 3,019,423
South Dakota Electric
First Mortgage Bonds due 2032 August 15, 2032 7.23% 75,000 75,000
First Mortgage Bonds due 2039 November 1, 2039 6.13% 180,000 180,000
First Mortgage Bonds due 2044 October 20, 2044 4.43% 85,000 85,000
Total South Dakota Electric debt 340,000 340,000
Less unamortized debt discount (74) (78)
Total South Dakota Electric debt, net 339,926 339,922
Wyoming Electric
Industrial development revenue bonds due 2021(a)
September 1, 2021 N/A — 7,000
Industrial development revenue bonds due 2027(a) (b)
March 1, 2027 0.15% 10,000 10,000
First Mortgage Bonds due 2037 November 20, 2037 6.67% 110,000 110,000
First Mortgage Bonds due 2044 October 20, 2044 4.53% 75,000 75,000
Total Wyoming Electric debt 195,000 202,000
Less unamortized debt discount — —
Total Wyoming Electric debt, net 195,000 202,000
Total long-term debt 4,153,801 3,561,345
Less current maturities — 8,436
Less unamortized deferred financing costs (c)
26,878 24,809
Long-term debt, net of current maturities and deferred financing costs $ 4,126,923 $ 3,528,100

~~____________________~~

(b)

A reimbursement agreement is in place with Wells Fargo on behalf of Wyoming Electric for the ~~2009A~~$10 million bonds ~~of $10 million~~ due March 1, 2027. In the case of default, we hold the assumption of liability for drawings on Wyoming Electric’s Letter of Credit attached to these bonds.

(c)

Includes deferred financing costs associated with our Revolving Credit Facility of ~~$2.5~~$1.1 million and ~~$1.0~~$1.8 million as of December 31, ~~2021~~2023 and December 31, ~~2020,~~2022, respectively.

Scheduled maturities of long-term debt ~~excluding amortization of premiums~~and associated interest payments by year are shown below (in millions):


	Payments Due by Period
	2024		2025		2026		2027		2028		Thereafter		Total
Principal payments on Long-term debt including current maturities (a)	$	600.0	$	—	$	300.0	$	410.0	$	350.0	$	2,775.0	$	4,435.0
Interest payments on Long-term debt (a)		179.0		168.1		162.2		149.6		132.9		1,052.2		1,844.0

(a)

Long-term debt amounts do not include deferred financing costs or discounts ~~for future years~~or premiums on debt. Estimated interest payments on variable rate debt are ~~(in thousands):~~

2022 $ —
2023 $ 525,000
2024 $ 600,000
2025 $ —
2026 $ 300,000
Thereafter $ 2,735,000

90calculated by utilizing the applicable rates as of December 31, 2023.

Table of Contents

Our debt securities contain certain restrictive financial covenants, all of which the Company and its subsidiaries were in compliance with at December 31, ~~2021.~~2023. See below for additional information.

Substantially all of the tangible utility property of South Dakota Electric and Wyoming Electric is subject to the lien of indentures securing their first mortgage bonds. First mortgage bonds of South Dakota Electric and Wyoming Electric may be issued in amounts limited by property, earnings and other provisions of the mortgage indentures.

~~Amortization of Deferred Financing Costs~~

~~Our deferred financing costs and associated amortization expense included in Interest expense on the accompanying Consolidated Statements of Income were as follows (in thousands):~~

Deferred Financing Costs Remaining at Amortization Expense for the years ended December 31,
December 31, 2021 2021 2020 2019
$ 26,878 $ 3,769 $ 3,272 $ 3,242

Debt Transactions

On ~~August 26, 2021,~~September 15, 2023, we completed a public debt offering ~~which consisted~~ of ~~$600~~$450 million, ~~1.037% three-year~~6.15% senior unsecured notes due ~~August 23, 2024. The~~May 15, 2034. Proceeds from the offering, which were net of $7.6 million of deferred financing costs, along with available cash were used to repay all of our $525 million principal amount outstanding notes ~~include an optional redemption provision~~on their November 30, 2023 maturity date and ~~may be redeemed, in whole or in part, without premium, on or after February 23, 2022.~~for other general corporate purposes.

On March 7, 2023, we completed a public debt offering of $350 million, 5.95% five year senior unsecured notes due March 15, 2028. The proceeds from the offering, which were net of ~~$3.7~~$4.2 million of deferred financing costs, were used to repay ~~amounts~~notes outstanding under our ~~term loan entered into on February 24, 2021.~~

~~On June 17, 2020, we completed a public debt offering which consisted of $400 million of 2.50% 10-year senior unsecured notes due June 15, 2030. The proceeds were used to repay short-term debt~~CP Program and for ~~working capital and~~other general corporate purposes.

Debt Covenants

Revolving Credit Facility

~~Under~~

We were in compliance with all of our Revolving Credit Facility wecovenants as of December 31, 2023. We are required to maintain a Consolidated Indebtedness to Capitalization Ratio not to exceed 0.65 to 1.00. Subject to applicable cure periods, a violation of ~~any of these covenants~~this covenant would constitute an event of default that entitles the lenders to terminate their remaining commitments and accelerate all principal and interest outstanding.

As of December 31, 2023, our Consolidated Indebtedness to Capitalization Ratio was
0.58

~~We were~~ to 1.00.

Wyoming Electric

Wyoming Electric was in compliance with ~~our~~all covenants atwithin its financing agreements as of December 31, ~~2021 as shown below:~~

As of December 31, 2021 Covenant Requirement
Consolidated Indebtedness to Capitalization Ratio 62.1% Less than 65%

2023. Wyoming Electric

~~Covenants within Wyoming Electric's financing agreements require Wyoming Electric~~ is required to maintain a debt to capitalization ratio of no more than 0.60 to 1.00. As of December 31, ~~2021, we were in compliance with these financial covenants.~~

2023, Wyoming Electric's debt to capitalization ratio was
0.51

to 1.00.

Dividend Restrictions

Our Revolving Credit Facility and other debt obligations contain restrictions on the payment of cash dividends when a default or event of default occurs.

Due to our holding company structure, substantially all of our operating cash flows are provided by dividends paid or distributions made by our subsidiaries. The cash to pay dividends to our shareholders is derived from these cash flows. As a result, certain statutory limitations or regulatory or financing agreements could affect the levels of distributions allowed to be made by our subsidiaries.

Our Utilities are generally limited to the amount of dividends allowed to be paid to our utility holding company under the Federal Power Act and settlement agreements with state regulatory jurisdictions. As of December 31, ~~2021,~~2023, the amount of restricted net assets at our Utilities that may not be distributed to our utility holding company in the form of a loan or dividend was approximately ~~$155~~$142.6 million.

South Dakota Electric and Wyoming Electric are generally limited to the amount of dividends allowed to be paid to our utility holding company under certain financing agreements.

~~Table of Contents~~Equity

~~Equity~~

~~At-the-Market Equity Offering Program~~

~~On August 3, 2020, we filed a shelf registration and DRSPP with the SEC. In conjunction with these shelf filings, we renewed the ATM. The renewed ATM program, which allows us to sell shares of~~Although our common stock, is the same as the prior program other than the aggregate value increased from $300 million to $400 million and a forward sales option was incorporated. This forward sales option allows us to sell our shares through the ATM program at the current trading price without actually issuing any shares to satisfy the sale until a future date. Under the ATM, shares may be offered from time to time pursuant to a sales agreement dated August 3, 2020. Shares of common stock are offered pursuant to ouraforementioned shelf registration statement ~~filed with~~does not limit our issuance capacity, our ability to issue securities is limited to the ~~SEC.~~

~~During the twelve months ended December 31, 2021, we issued a total~~authority granted by our Board of ~~1,812,197 shares of common stock under the ATM for $119 million, net of $1.1 million~~Directors, certain covenants in issuance costs. We did not issue any shares of common stock under the ATM during the twelve months ended December 31, 2020. During the twelve months ended December 31, 2019, we issued a total of 1,328,332 shares of common stock under the ATM for $99 million, net of $1.2 million in issuance costs.

~~February 2020 Equity Issuance~~

On February 27, 2020, we issued 1.2 million shares of common stock to a single investor through an underwritten registered transaction at a price of $81.77 per share for proceeds of $99 million, net of $1.0 million of issuance costs. The shares of common stock were offered pursuant to our ~~shelf registration statement filed with the SEC.~~

~~Shareholder Dividend Reinvestment~~financing arrangements and ~~Stock Purchase Plan~~

We have a DRSPP under which shareholders may purchase additional shares of common stock through dividend reinvestment and/or optional cash payments at 100% of the recent average market price. We have the option of issuing new shares or purchasing the shares on the open market. We issued new shares until March 1, 2018, after which we began purchasing shares on the open market. At December 31, 2021, there were 116,306 shares of unissued stock available for future offering under the DRSPP.

~~Preferred Stock~~

restrictions imposed by federal and state regulatory authorities. Our articles of incorporation authorize the issuance of 100 million shares of common stock and 25 million shares of preferred ~~stock~~stock. As of ~~which~~December 31, 2023, we had approximately 68 million shares of common stock outstanding and no shares of preferred stock ~~outstanding~~outstanding.

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At-the-Market Equity Offering Program

As previously disclosed, on August 4, 2020, we entered into an Amended and Restated Equity Distribution Sales Agreement ("Previous Sales Agreement") to sell shares of common stock up to an aggregate of $400 million, from time to time, through our ATM program utilizing our shelf registration statement. In conjunction with the new shelf registration statement filing discussed above, we entered into a new Equity Distribution Sales Agreement ("Sales Agreement") on June 16, 2023. We also terminated the Previous Sales Agreement on June 16, 2023. The Sales Agreement is similar to the Previous Sales Agreement and allows us to sell shares of common stock up to an aggregate of $400 million through our ATM program.

ATM activity for the years ended December 31 was as follows (in millions, except Average price per share amounts):


	December 31, 2023		December 31, 2022		December 31, 2021
August 4, 2020 ATM Program
Proceeds, (net of issuance costs of $(0.5), $(0.9) and $(1.1), respectively)	$	48.5	$	90.3	$	118.8
Number of shares issued		0.8		1.3		1.8

June 16, 2023 ATM Program
Proceeds, (net of issuance costs of $(0.7), $0, $0, respectively	$	70.2	$	—	$	—
Number of shares issued		1.2		—		—

Total activity under both ATM Programs
Proceeds, (net of issuance costs of $(1.2), $(0.9) and $(1.1), respectively)	$	118.7	$	90.3	$	118.8
Number of shares issued		2.0		1.3		1.8
Average price per share	$	59.04	$	69.74	$	66.18

Shareholder Dividend Reinvestment and Stock Purchase Plan

Effective as of ~~December 31, 2021~~July 7, 2023, we terminated our DRSPP. On July 10, 2023, we filed a post-effective amendment to amend the Registration Statement on Form S-3 (File No. 333-240319) filed with the SEC on August 4, 2020. The filing of this post-effective amendment de-registered all shares of common stock that were issuable under the DRSPP but not sold as of July 7, 2023. With the termination of the DRSPP, a direct stock purchase plan is being offered which will allow shareholders to continue making share transactions. This plan is sponsored and ~~2020.~~administered solely by EQ Shareowner Services, our transfer agent.

(9) RISK MANAGEMENT AND DERIVATIVES

Market and Credit Risk Disclosures

Our activities in the energy industry expose us to a number of risks in the normal operations of our businesses. Depending on the activity, we are exposed to varying degrees of market risk and credit risk. ~~To manage and mitigate these identified risks, we have adopted the Black Hills Corporation Risk Policies and Procedures. Valuation methodologies for our derivatives are detailed within~~

~~Note 1~~

Market Risk

Market risk is the potential loss that may occur as a result of an adverse change in market price, rate or supply. We are exposed, but not limited to, the following market risks:

•

Commodity price risk associated with our retail natural gas and wholesale electric power marketing activities and our fuel procurement for several of our gas-fired generation assets, which include market fluctuations due to unpredictable factors such as the COVID-19 pandemic, weather ~~(Winter~~(e.g. Winter Storm Uri), geopolitical events, market speculation, recession, inflation, pipeline constraints, and other factors that may impact natural gas and electric supply and demand; and

•

Credit risk is the risk of financial loss resulting from non-performance of contractual obligations by a counterparty.

We attempt to mitigate our credit exposure by conducting business primarily with high credit quality entities, setting tenor and credit limits commensurate with counterparty financial strength, obtaining master netting agreements and mitigating credit exposure with less creditworthy counterparties through parental guarantees, cash collateral requirements, letters of credit and other security agreements.

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We perform ~~ongoing~~periodic credit evaluations of our customers and adjust credit limits based upon payment history and the customer’s current creditworthiness, as determined by review of their current credit information. We maintain a provision for estimated credit losses based upon historical experience, changes in current market conditions, expected losses and any specific customer collection issue that is identified. Our credit exposure at December 31, ~~2021~~2023 was concentrated primarily among retail utility customers, investment grade companies, cooperative utilities and federal agencies.

Derivatives and Hedging Activity

Our derivative and hedging activities included in the accompanying Consolidated Balance Sheets, Consolidated Statements of Income and Consolidated Statements of Comprehensive Income (Loss) are detailed below and within Note 10.

The operations of our Utilities, including natural gas sold by our Gas Utilities and natural gas used by our Electric Utilities’ generation plants or those plants under PPAs where our Electric Utilities must provide the generation fuel (tolling agreements), expose our utility customers to natural gas price volatility. Therefore, as allowed or required by state utility commissions, we have entered into commission approved hedging programs utilizing natural gas futures, options, over-the-counter swaps and basis swaps to reduce our customers’ underlying exposure to these fluctuations. These transactions are considered derivatives, and in accordance with accounting standards for derivatives and hedging, mark-to-market adjustments are recorded as Derivative assets or Derivative liabilities on the accompanying Consolidated Balance Sheets, net of balance sheet offsetting as permitted by GAAP.

For our regulated Utilities’ hedging plans, unrealized and realized gains and losses, as well as option premiums and commissions on these transactions are recorded as Regulatory assets or Regulatory liabilities in the accompanying Consolidated Balance Sheets in accordance with state regulatory commission guidelines. When the related costs are recovered through our rates, the hedging activity is recognized in the Consolidated Statements of Income.

We periodically have wholesale power purchase and sale contracts used to manage purchased power costs and load requirements associated with serving our electric customers that are considered derivative instruments due to not qualifying for the normal purchase and normal sales exception to derivative accounting. Changes in the fair value of these commodity derivatives are recognized in the Consolidated Statements of Income.

To support our Choice Gas Program customers, we buy, sell and deliver natural gas at competitive prices by managing commodity price risk. As a result of these activities, this area of our business is exposed to risks associated with changes in the market price of natural gas. We manage our exposure to such risks using over-the-counter and exchange traded options and swaps with counterparties in anticipation of forecasted purchases and sales during time frames ranging from January ~~2022~~2024 through October ~~2024.~~2025. A portion of our over-the-counter swaps have been designated as cash flow hedges to mitigate the commodity price risk associated with deliveries under fixed price forward contracts to deliver gas to our Choice Gas Program customers. The gain or loss on these designated derivatives is reported in AOCI in the accompanying Consolidated Balance Sheets and reclassified into earnings in the same period that the underlying hedged item is recognized in earnings. Effectiveness of our hedging position is evaluated at least quarterly.

The contract or notional amounts and terms of the natural gas derivative commodity instruments held by our utilities are comprised of both short and long positions. We had the following net long positions as of:


		December 31, 2023		December 31, 2022
	Units	Notional Amounts	Maximum Term (months) (a)	Notional Amounts	Maximum Term (months) (a)
Natural gas futures purchased	MMBtus	650,000	3	630,000	3
Natural gas options purchased, net	MMBtus	2,850,000	3	1,790,000	3
Natural gas basis swaps purchased	MMBtus	1,050,000	3	900,000	3
Natural gas over-the-counter swaps, net (b)	MMBtus	3,890,000	21	4,460,000	24
Natural gas physical commitments, net (c)	MMBtus	12,582,415	10	17,864,412	12

December 31, 2021 December 31, 2020
Notional (MMBtus)
Maximum Term (months) (a)
Notional (MMBtus)
Maximum Term (months) (a)
Natural gas futures purchased 590,000 3 620,000 3
Natural gas options purchased, net 3,100,000 3 3,160,000 3
Natural gas basis swaps purchased 870,000 3 900,000 3
Natural gas over-the-counter swaps, net (b)
4,570,000 34 3,850,000 17
Natural gas physical commitments, net (c)
16,416,677 24 17,513,061 22
Electric wholesale contracts (c)
— 0 219,000 12

(a)

~~____________________~~

~~(a)~~ Term reflects the maximum forward period hedged.

(b)

As of December 31, ~~2021, 1,830,000~~2023, 2,101,700 MMBtus of natural gas over-the-counter swaps purchased were designated as cash flow hedges.

(c)

Volumes exclude derivative contracts that qualify for the normal purchase, normal sales exception permitted by GAAP.

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We have certain derivative contracts which contain credit provisions. These credit provisions may require the Company to post collateral when credit exposure to the Company is in excess of a negotiated line of unsecured credit. At December 31, ~~2021,~~2023, the Company posted ~~$2.1~~$2.0 million related to such provisions, which is included in Other current assets on the Consolidated Balance Sheets.

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Derivatives by Balance Sheet Classification

As required by accounting standards for derivatives and hedges, fair values within the following tables are presented on a gross basis aside from the netting of asset and liability positions. Netting of positions is permitted in accordance with accounting standards for offsetting and under terms of our master netting agreements that allow us to settle positive and negative positions.

The following tables present the fair value and balance sheet classification of our derivative instruments as of December 31, (in ~~thousands)~~millions):


	Balance Sheet Location	2023			2022
Derivatives designated as hedges:
Asset derivative instruments:
Current commodity derivatives	Derivative assets - current	$	—		$	0.1
Noncurrent commodity derivatives	Other assets, non-current		—			0.2
Liability derivative instruments:
Current commodity derivatives	Derivative liabilities - current		(2.7	)		(1.7	)
Noncurrent commodity derivatives	Other deferred credits and other liabilities		(0.2	)		—
Total derivatives designated as hedges		$	(2.9	)	$	(1.4	)

Derivatives not designated as hedges:
Asset derivative instruments:
Current commodity derivatives	Derivative assets - current	$	—		$	0.5
Noncurrent commodity derivatives	Other assets, non-current		—			0.3
Liability derivative instruments:
Current commodity derivatives	Derivative liabilities - current		(3.8	)		(4.9	)
Noncurrent commodity derivatives	Other deferred credits and other liabilities		(0.1	)		—
Total derivatives not designated as hedges		$	(3.9	)	$	(4.1	)

Balance Sheet Location 2021 2020
Derivatives designated as hedges:
Asset derivative instruments:
Current commodity derivatives Derivative assets - current $ 2,017 $ 181
Noncurrent commodity derivatives Other assets, non-current 18 43
Liability derivative instruments:
Current commodity derivatives Derivative liabilities - current — (108)
Total derivatives designated as hedges $ 2,035 $ 116
Derivatives not designated as hedges:
Asset derivative instruments:
Current commodity derivatives Derivative assets - current $ 2,356 $ 1,667
Noncurrent commodity derivatives Other assets, non-current 804 151
Liability derivative instruments:
Current commodity derivatives Derivative liabilities - current (1,439) (1,936)
Noncurrent commodity derivatives Other deferred credits and other liabilities (20) —
Total derivatives not designated as hedges $ 1,701 $ (118)

Derivatives Designated as Hedge Instruments

The impact of cash flow hedges on our Consolidated Statements of Comprehensive Income and Consolidated Statements of Income is presented below for the years ended December 31, ~~2021, 2020~~2023, 2022 and ~~2019.~~2021. Note that this presentation does not reflect the gains or losses arising from the underlying physical transactions; therefore, it is not indicative of the economic profit or loss we realized when the underlying physical and financial transactions were settled.

2021 2020 2019 2021 2020 2019
Derivatives in Cash Flow Hedging Relationships Amount of Gain/(Loss) Recognized in OCI Income Statement Location Amount of Gain/(Loss) Reclassified from AOCI into Income
(in thousands) (in thousands)
Interest rate swaps $ 2,851 $ 2,851 $ 2,851 Interest expense $ (2,851) $ (2,851) $ (2,851)
Commodity derivatives 1,952 540 (965) Fuel, purchased power and cost of natural gas sold 2,051 (601) 417
Total $ 4,803 $ 3,391 $ 1,886 $ (800) $ (3,452) $ (2,434)


	2023			2022			2021			2023			2022			2021
Derivatives in Cash Flow Hedging Relationships	Amount of Gain/(Loss) Recognized in OCI								Income Statement Location	Amount of Gain/(Loss) Reclassified from AOCI into Income
	(in millions)									(in millions)
Interest rate swaps	$	2.9		$	2.8		$	2.8	Interest expense	$	(2.9	)	$	(2.8	)	$	(2.9	)
Commodity derivatives		(1.6	)		(3.5	)		2.0	Fuel, purchased power and cost of natural gas sold		(3.0	)		2.7			2.1
Total	$	1.3		$	(0.7	)	$	4.8		$	(5.9	)	$	(0.1	)	$	(0.8	)

As of December 31, ~~2021, $0.9~~2023, $5.9 million of net losses related to our interest rate swaps and commodity derivatives are expected to be reclassified from AOCI into earnings within the next 12 months. As market prices fluctuate, estimated and actual realized gains or losses will change during future periods.

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Derivatives Not Designated as Hedge Instruments

The following table summarizes the impacts of derivative instruments not designated as hedge instruments on our Consolidated Statements of Income for the years ended December 31, ~~2021, 2020~~2023, 2022 and ~~2019.~~2021. Note that this presentation does not reflect the expected gains or losses arising from the underlying physical transactions; therefore, it is not indicative of the economic gross profit we realized when the underlying physical and financial transactions were settled.


		2023			2022			2021
Derivatives Not Designated as Hedging Instruments	Location of Gain/(Loss) on Derivatives Recognized in Income	Amount of Gain/(Loss) on Derivatives Recognized in Income
		(in millions)
Commodity derivatives - Natural Gas	Fuel, purchased power and cost of natural gas sold	$	(4.2	)	$	(0.8	)	$	2.6
		$	(4.2	)	$	(0.8	)	$	2.6

2021 2020 2019
Derivatives Not Designated as Hedging Instruments Income Statement Location Amount of Gain/(Loss) on Derivatives Recognized in Income
(in thousands)
Commodity derivatives - Electric Fuel, purchased power and cost of natural gas sold $ (144) $ 144 $ —
Commodity derivatives - Natural Gas Fuel, purchased power and cost of natural gas sold 2,599 1,640 (1,100)
$ 2,455 $ 1,784 $ (1,100)

As discussed above, financial instruments used in our regulated Gas Utilities are not designated as cash flow hedges. However, there is no earnings impact because the unrealized gains and losses arising from the use of these financial instruments are recorded as Regulatory assets or Regulatory liabilities. The net unrealized losses included in ~~our~~a Regulatory ~~assets or Regulatory liability accounts~~asset related to these financial instruments used in our Gas Utilities were ~~$2.6~~$5.1 million and ~~$2.2~~$8.8 million at December 31, ~~2021~~2023 and ~~2020,~~2022, respectively.

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For our Electric Utilities, the unrealized gains and losses arising from these derivatives are recognized in the Consolidated Statements of Income.

(10) FAIR VALUE MEASUREMENTS

Recurring Fair Value Measurements

Derivatives

Valuation methodologies for our derivatives are detailed within Note 1. The following tables set forth, by level within the fair value hierarchy, our gross assets and gross liabilities and related offsetting as permitted by GAAP that were accounted for at fair value on a recurring basis for derivative instruments.

As of December 31, 2021
Level 1 Level 2 Level 3
Cash Collateral and Counterparty Netting (a)
Total
(in thousands)
Assets:
Commodity derivatives - Gas Utilities $ — $ 7,569 $ — $ (2,374) $ 5,195
Commodity derivatives - Electric Utilities — — — — —
Total $ — $ 7,569 $ — $ (2,374) $ 5,195
Liabilities:
Commodity derivatives - Gas Utilities $ — $ 3,273 $ — $ (1,814) $ 1,459
Commodity derivatives - Electric Utilities 0 $ — 0 $ — $ —
Total $ — $ 3,273 $ — $ (1,814) $ 1,459


	As of December 31, 2023
	Level 1		Level 2		Level 3		Cash Collateral and Counterparty Netting (a)			Total
	(in millions)
Assets:
Commodity derivatives	$	—	$	1.9	$	—	$	(1.9	)	$	—
Total	$	—	$	1.9	$	—	$	(1.9	)	$	—

Liabilities:
Commodity derivatives	$	—	$	10.1	$	—	$	(3.3	)	$	6.8
Total	$	—	$	10.1	$	—	$	(3.3	)	$	6.8

~~_____________________~~

(a)

~~(a)~~ As of December 31, ~~2021, $2.4~~2023, $1.9 million of our commodity derivative gross assets and ~~$1.8~~$3.3 million of our commodity derivative gross liabilities, as well as related gross collateral amounts, were subject to master netting agreements.

~~Table of Contents~~


	As of December 31, 2022
	Level 1		Level 2		Level 3		Cash Collateral and Counterparty Netting (a)			Total
	(in millions)
Assets:
Commodity derivatives	$	—	$	5.4	$	—	$	(4.3	)	$	1.1
Total	$	—	$	5.4	$	—	$	(4.3	)	$	1.1

Liabilities:
Commodity derivatives	$	—	$	11.4	$	—	$	(4.8	)	$	6.6
Total	$	—	$	11.4	$	—	$	(4.8	)	$	6.6

As of December 31, 2020
Level 1 Level 2 Level 3
Cash Collateral and Counterparty Netting (a)
Total
Assets:
Commodity derivatives - Gas Utilities $ — 2,504 $ — $ (1,527) $ 977
Commodity derivatives - Electric Utilities — 1,065 — — 1,065
Total $ — $ 3,569 $ — $ (1,527) $ 2,042
Liabilities:
Commodity derivatives - Gas Utilities $ — $ 2,675 $ — $ (1,552) $ 1,123
Commodity derivatives - Electric Utilities — 921 — — 921
Total $ — $ 3,596 $ — $ (1,552) $ 2,044

(a)

~~____________________~~

~~(a)~~ As of December 31, ~~2020, $1.5~~2022, $4.3 million of our commodity derivative assets and ~~$1.6~~$4.8 million of our commodity derivative liabilities, as well as related gross collateral amounts, were subject to master netting agreements.

Pension and Postretirement Plan Assets

A discussion of the fair value of our Pension and Postretirement Plan assets is included in Note 13.

~~Nonrecurring Fair Value Measurement~~

~~A discussion of the fair value of our investment in equity securities of a privately held oil and gas company, a Level 3 asset, is included in~~ ~~Note 1~~.

Other Fair Value Measurements

The carrying amount of cash and cash equivalents, restricted cash and equivalents and short-term borrowings approximates fair value due to their liquid or short-term nature. Cash, cash equivalents and restricted cash are classified in Level 1 in the fair value hierarchy. Notes payable consist of commercial paper borrowings and are not traded on an exchange; therefore, they are classified as Level 2 in the fair value hierarchy.

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The following table presents the carrying amounts and fair values of financial instruments not recorded at fair value on the Consolidated Balance Sheets at December 31 (in ~~thousands)~~millions):


	2023				2022
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Long-term debt, including current maturities (a)	$	4,401.2	$	4,215.6	$	4,132.3	$	3,760.8

(a)

2021 2020
Carrying Amount Fair Value Carrying Amount Fair Value
Long-term debt, including current maturities (a)
$ 4,126,923 $ 4,570,619 $ 3,536,536 $ 4,208,167

~~____________________~~

~~(a)~~ Long-term debt is valued based on observable inputs available either directly or indirectly for similar liabilities in active markets and therefore is classified in Level 2 in the fair value hierarchy. Carrying amount of long-term debt is net of deferred financing costs.

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(11) OTHER COMPREHENSIVE INCOME

We record deferred gains (losses) in AOCI related to interest rate swaps designated as cash flow hedges, commodity contracts designated as cash flow hedges and the amortization of components of our defined benefit plans. Deferred gains (losses) for our commodity contracts designated as cash flow hedges are recognized in earnings upon settlement, while deferred gains (losses) related to our interest rate swaps are recognized in earnings as they are amortized.

The following table details reclassifications out of AOCI and into Net income. The amounts in parentheses below indicate decreases to Net income in the Consolidated Statements of Income for the period, net of tax (in ~~thousands)~~millions):


	Location on the Consolidated	Amount Reclassified from AOCI
	Statements of Income	December 31, 2023			December 31, 2022
Gains and (losses) on cash flow hedges:
Interest rate swaps	Interest expense	$	(2.9	)	$	(2.8	)
Commodity contracts	Fuel, purchased power and cost of natural gas sold		(3.0	)		2.7
			(5.9	)		(0.1	)
Income tax	Income tax benefit (expense)		1.4			—
Total reclassification adjustments related to cash flow hedges, net of tax		$	(4.5	)	$	(0.1	)

Amortization of components of defined benefit plans:
Prior service cost	Operations and maintenance	$	—		$	0.1

Actuarial gain (loss)	Operations and maintenance		(0.2	)		(0.8	)
			(0.2	)		(0.7	)
Income tax	Income tax benefit (expense)		—			0.2
Total reclassification adjustments related to defined benefit plans, net of tax		$	(0.2	)	$	(0.5	)

Total reclassifications		$	(4.7	)	$	(0.6	)

Location on the Consolidated Statements of Income Amount Reclassified from AOCI
December 31, 2021 December 31, 2020
Gains and (losses) on cash flow hedges:
Interest rate swaps Interest expense $ (2,851) $ (2,851)
Commodity contracts Fuel, purchased power and cost of natural gas sold 2,051 (601)
(800) (3,452)
Income tax Income tax benefit (expense) 175 383
Total reclassification adjustments related to cash flow hedges, net of tax $ (625) $ (3,069)
Amortization of components of defined benefit plans:
Prior service cost Operations and maintenance $ 98 $ 103
Actuarial gain (loss) Operations and maintenance (2,391) (2,387)
(2,293) (2,284)
Income tax Income tax benefit (expense) 638 935
Total reclassification adjustments related to defined benefit plans, net of tax $ (1,655) $ (1,349)
Total reclassifications $ (2,280) $ (4,418)

Balances by classification included within AOCI, net of tax on the accompanying Consolidated Balance Sheets were as follows (in ~~thousands)~~millions):


	Derivatives Designated as Cash Flow Hedges
	Interest Rate Swaps			Commodity Derivatives			Employee Benefit Plans			Total
As of December 31, 2021	$	(10.4	)	$	1.5		$	(11.2	)	$	(20.1	)
Other comprehensive income (loss)
before reclassifications		—			(0.6	)		4.6			4.0
Amounts reclassified from AOCI		2.1			(2.1	)		0.5			0.5
As of December 31, 2022	$	(8.3	)	$	(1.2	)	$	(6.1	)	$	(15.6	)
Other comprehensive income (loss)
before reclassifications		—			(3.6	)		(0.3	)		(3.9	)
Amounts reclassified from AOCI		2.2			2.3			0.2			4.7
As of December 31, 2023	$	(6.1	)	$	(2.5	)	$	(6.2	)	$	(14.8	)

Derivatives Designated as Cash Flow Hedges
Interest Rate Swaps Commodity Derivatives Employee Benefit Plans Total
As of December 31, 2020 $ (12,558) $ 2 $ (14,790) $ (27,346)
Other comprehensive income (loss)
before reclassifications — 3,023 1,959 4,982
Amounts reclassified from AOCI 2,174 (1,549) 1,655 2,280
As of December 31, 2021 $ (10,384) $ 1,476 $ (11,176) $ (20,084)
Derivatives Designated as Cash Flow Hedges
Interest Rate Swaps Commodity Derivatives Employee Benefit Plans Total
As of December 31, 2019 $ (15,122) $ (456) $ (15,077) $ (30,655)
Other comprehensive income (loss)
before reclassifications — (47) (1,062) (1,109)
Amounts reclassified from AOCI 2,564 505 1,349 4,418
As of December 31, 2020 $ (12,558) $ 2 $ (14,790) $ (27,346)

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(12) VARIABLE INTEREST ENTITY

Black Hills Colorado IPP owns and operates a 200 MW, combined-cycle natural gas generating facility located in Pueblo, Colorado. In 2016, Black Hills Electric Generation sold a ~~49.9%~~49.9%, non-controlling interest in Black Hills Colorado IPP to a third-party buyer. Black Hills Electric Generation is the operator of the facility, which is contracted to provide capacity and energy through 2031 to Colorado Electric.

~~The accounting for a partial sale of a subsidiary in which control is maintained and the subsidiary continues to be consolidated is specified under ASC 810,~~ ~~Consolidation~~. The partial sale is required to be recorded as an equity transaction with no resulting gain or loss on the sale. GAAP requires that non-controlling interests in subsidiaries and affiliates be reported in the equity section of a company’s balance sheet.

Net income available for common stock for the years ended December 31, ~~2021, 2020~~2023, 2022 and ~~2019~~2021 was reduced by ~~$15~~$13.8 million, ~~$15~~$12.4 million, and ~~$14~~$14.5 million, respectively, attributable to this non-controlling interest. The net income allocable to the non-controlling interest holder is based on ownership interest with the exception of certain agreed upon adjustments. Distributions of net income attributable to this non-controlling interest are due within 30 days following the end of a quarter but may be withheld as necessary by Black Hills Electric Generation.

Black Hills Colorado IPP has been determined to be a VIE in which the Company has a variable interest. Black Hills Electric Generation has been determined to be the primary beneficiary of the VIE as Black Hills Electric Generation is the operator and manager of the generation facility and, as such, has the power to direct the activities that most significantly impact Black Hills Colorado IPP’s economic performance. Black Hills Electric Generation, as the primary beneficiary, continues to consolidate Black Hills Colorado IPP. Black Hills Colorado IPP has not received financial or other support from the Company outside of pre-existing contractual arrangements during the reporting period. Black Hills Colorado IPP does not have any debt and its cash flows from operations are sufficient to support its ongoing operations.

We have recorded the following assets and liabilities on our ~~consolidated balance sheets~~Consolidated Balance Sheets related to the VIE described above as of December 31 (in ~~thousands)~~millions):


	2023		2022
Assets:
Current assets	$	15.1	$	12.8
Property, plant and equipment	$	166.8	$	178.8

Liabilities:
Current liabilities	$	4.8	$	5.4

(13) EMPLOYEE BENEFIT PLANS

Defined Contribution Plans

We sponsor a 401(k) retirement savings plan (the 401(k) Plan). Participants in the 401(k) Plan may elect to invest a portion of their eligible compensation in the 401(k) Plan up to the maximum amounts established by the IRS. The 401(k) Plan provides employees the opportunity to invest up to ~~50%~~50% of their eligible compensation on a pre-tax or after-tax basis.

The 401(k) Plan provides a Company matching contribution for all eligible participants. Certain eligible participants who are not currently accruing a benefit in the Pension Plan also receive a Company retirement contribution based on the participant’s age and years of service. Vesting of all Company and matching contributions occurs at ~~20%~~20% per year with ~~100%~~100% vesting when the participant has 5 years of service with the Company.

Defined Benefit Pension Plan

We have 1one defined benefit pension plan, the Black Hills Retirement Plan (Pension Plan). The Pension Plan covers certain eligible employees of the Company. The benefits for the Pension Plan are based on years of service and calculations of average earnings during a specific time period prior to retirement. The Pension Plan is closed to new employees and frozen for certain employees who did not meet age and ~~service based~~service-based criteria.

The Pension Plan assets are held in a Master Trust. Our Board of Directors has approved the Pension Plan’s investment policy. The objective of the investment policy is to manage assets in such a way that will allow the eventual settlement of our obligations to the Pension Plan’s beneficiaries. To meet this objective, our pension assets are managed by an outside adviser using a portfolio strategy that will provide liquidity to meet the Pension Plan’s benefit payment obligations. The Pension Plan’s assets consist primarily of equity, fixed income and hedged investments.

The expected rate of return on the Pension Plan assets is determined by reviewing the historical and expected returns of both equity and fixed income markets, taking into account asset allocation, the correlation between asset class returns and the mix of active and passive investments. The Pension Plan utilizes a dynamic asset allocation where the target range to return-seeking and liability-hedging assets is determined based on the funded status of the Plan. As of December 31, ~~2021,~~2023, the expected rate of return on pension plan assets was based on the targeted asset allocation range of ~~22%~~20% to ~~30%~~28% return-seeking assets and ~~70%~~72% to ~~78%~~80% liability-hedging assets.

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Our Pension Plan is funded in compliance with the federal government’s funding requirements.

Plan Assets

The percentages of total plan asset by investment category for our Pension Plan at December 31 were as follows:


Return-seeking Assets	2023	2022
Equity	14%	14%
Real estate	5%	7%
Hedge funds	3%	3%
Fixed income	2%	2%
Total	24%	26%

Liability-hedging Assets	2023	2022
Fixed income	74%	72%
Cash	2%	2%
Total	76%	74%

Total Assets	100%	100%

2021 2020
Equity 15% 21%
Real estate 7 3
Fixed income 74 69
Cash 1 3
Hedge funds 3 4
Total 100% 100%

Supplemental Non-qualified Defined Benefit Plans

We have various supplemental retirement plans for key executives of the Company. The plans are non-qualified defined benefit and defined contribution plans (Supplemental Plans). The Supplemental Plans are subject to various vesting schedules and are funded on a cash basis as benefits are paid.

Non-pension Defined Benefit Postretirement Healthcare Plan

BHC sponsors a retiree healthcare plan (Healthcare Plan) for employees who meet certain age and service requirements at retirement. Healthcare Plan benefits are subject to premiums, deductibles, co-payment provisions and other limitations. A portion of the Healthcare Plan for participating business units are pre-funded via VEBA trusts. Pre-65 retirees as well as a grandfathered group of post-65 retirees receive their retiree medical benefits through the Black Hills self-insured retiree medical plans.

Healthcare coverage for post-65 Medicare-eligible retirees is provided through an individual market healthcare exchange.

We fund the Healthcare Plan on a cash basis as benefits are paid. The Healthcare Plan provides for partial pre-funding via VEBA trusts. Assets related to this pre-funding are held in trust and are for the benefit of the union and non-union employees located in the states of Arkansas, Iowa and Kansas. We do not pre-fund the Healthcare Plan for those employees outside Arkansas, Iowa and Kansas.

Plan Contributions

Contributions to the Pension Plan are cash contributions made directly to the Master Trust. Healthcare and Supplemental Plan contributions are made in the form of benefit payments. Healthcare benefits include company and participant paid premiums.

Contributions for the years ended December 31 were as follows (in ~~thousands)~~millions):


	2023		2022
Defined Contribution Plan
Company retirement contributions	$	12.7	$	11.9
Company matching contributions	$	17.1	$	16.2
Defined Benefit Plans
Defined Benefit Pension Plan	$	—	$	—
Non-Pension Defined Benefit Postretirement Healthcare Plan	$	5.4	$	6.1
Supplemental Non-Qualified Defined Benefit Plans	$	3.5	$	3.1

2021 2020
Defined Contribution Plan
Company retirement contributions $ 11,332 $ 10,455
Company matching contributions $ 15,938 $ 15,240

~~Table of Contents~~

2021 2020
Defined Benefit Plans
Defined Benefit Pension Plan $ — $ 12,700
Non-Pension Defined Benefit Postretirement Healthcare Plan $ 6,432 $ 6,058
Supplemental Non-Qualified Defined Benefit Plans $ 2,576 $ 2,674

~~While we~~We do not have any required ~~contributions, we expect to make $3.9 million in~~ contributions to our Pension Plan in ~~2022.~~2024; however, we expect to make $2.3 million in contributions.

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Fair Value Measurements

The following tables set forth, by level within the fair value hierarchy, the assets that were accounted for at fair value on a recurring basis (in ~~thousands)~~millions):

Pension Plan December 31, 2021
Level 1 Level 2 Level 3 Total Investments Measured at Fair Value
NAV (a)
Total Investments
Common Collective Trust - Cash and Cash Equivalents $ — $ 6,009 $ — $ 6,009 $ — $ 6,009
Common Collective Trust - Equity — 70,262 — 70,262 — 70,262
Common Collective Trust - Fixed Income — 339,219 — 339,219 — 339,219
Common Collective Trust - Real Estate — — — — 30,407 30,407
Hedge Funds — — — — 12,490 12,490
Total investments measured at fair value $ — $ 415,490 $ — $ 415,490 $ 42,897 $ 458,387


	December 31, 2023
	Level 1		Level 2		Level 3		Total Investments Measured at Fair Value		NAV (a)		Total Investments
Pension Plan
Common Collective Trust - Cash and Cash Equivalents	$	—	$	6.7	$	—	$	6.7	$	—	$	6.7
Common Collective Trust - Equity		—		42.7		—		42.7		—		42.7
Common Collective Trust - Fixed Income		—		234.5		—		234.5		—		234.5
Common Collective Trust - Real Estate		—		—		—		—		16.4		16.4
Hedge Funds		—		—		—		—		8.1		8.1
Total investments measured at fair value	$	—	$	283.9	$	—	$	283.9	$	24.5	$	308.4
Non-pension Defined Benefit Postretirement Healthcare Plan
Cash and Cash Equivalents		8.0		—		—		8.0				8.0
Total investments measured at fair value	$	8.0	$	—	$	—	$	8.0			$	8.0


	December 31, 2022
	Level 1		Level 2		Level 3		Total Investments Measured at Fair Value		NAV (a)		Total Investments
Pension Plan
Common Collective Trust - Cash and Cash Equivalents	$	—	$	6.4	$	—	$	6.4	$	—	$	6.4
Common Collective Trust - Equity		—		45.1		—		45.1		—		45.1
Common Collective Trust - Fixed Income		—		242.0		—		242.0		—		242.0
Common Collective Trust - Real Estate		—		—		—		—		21.5		21.5
Hedge Funds		—		—		—		—		8.1		8.1
Total investments measured at fair value	$	—	$	293.5	$	—	$	293.5	$	29.6	$	323.1
Non-pension Defined Benefit Postretirement Healthcare Plan
Cash and Cash Equivalents		7.8		—		—		7.8				7.8
Total investments measured at fair value	$	7.8	$	—	$	—	$	7.8			$	7.8

(a)

Pension Plan December 31, 2020
Level 1 Level 2 Level 3 Total Investments Measured at Fair Value
NAV (a)
Total Investments
Common Collective Trust - Cash and Cash Equivalents — 16,810 — 16,810 — 16,810
Common Collective Trust - Equity — 100,311 — 100,311 — 100,311
Common Collective Trust - Fixed Income — 324,845 — 324,845 — 324,845
Common Collective Trust - Real Estate — — — — 14,301 14,301
Hedge Funds — — — — 17,454 17,454
Total investments measured at fair value $ — $ 441,966 $ — $ 441,966 $ 31,755 $ 473,721

~~____________________~~

~~(a)~~ Certain investments that are measured at fair value using NAV per share (or its equivalent) for practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in these tables for these investments are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the reconciliation of changes in the plan’s benefit obligations and fair value of plan assets above.

Non-pension Defined Benefit Postretirement Healthcare Plan December 31, 2021
Level 1 Level 2 Level 3 Total Investments Measured at Fair Value Total Investments
Cash and Cash Equivalents $ 7,972 $ — $ — $ 7,972 $ 7,972
Total investments measured at fair value $ 7,972 $ — $ — $ 7,972 $ 7,972

~~100~~

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Non-pension Defined Benefit Postretirement Healthcare Plan December 31, 2020
Level 1 Level 2 Level 3 Total Investments Measured at Fair Value Total Investments
Cash and Cash Equivalents $ 8,165 $ — $ — $ 8,165 $ 8,165
Total investments measured at fair value $ 8,165 $ — $ — $ 8,165 $ 8,165

Additional information about assets of the benefit plans, including methods and assumptions used to estimate the fair value of these assets, is as follows:

Pension Plan

Common Collective Trust Funds: These funds are valued based upon the redemption price of units held by the Pension Plan, which is based on the current fair value of the common collective trust funds’ underlying assets. Unit values are determined by the financial institution sponsoring such funds by dividing the fund’s net assets at fair value by its units outstanding at the valuation dates. The Pension Plan’s investments in common collective trust funds, with the exception of shares of the common collective trust-real estate are categorized as Level 2.

The following investments are measured at NAV and are not classified in the fair value hierarchy, in accordance with accounting guidance:

Common Collective Trust-Real Estate Funds: These funds are valued based on various factors of the underlying real estate properties, including market rent, market rent growth, occupancy levels, etc. As part of the trustee’s valuation process, properties are externally appraised generally on an annual basis. The appraisals are conducted by reputable independent appraisal firms and signed by appraisers that are members of the Appraisal Institute, with professional designation of Member, Appraisal Institute. All external appraisals are performed in accordance with the Uniform Standards of Professional Appraisal Practices. We receive monthly statements from the trustee, along with the annual schedule of investments and rely on these reports for pricing the units of the fund. ~~Some of the funds without participant withdrawal limitations are categorized as Level 2.~~

~~The following investments are measured at NAV and are not classified in the fair value hierarchy, in accordance with accounting guidance:~~

~~Common Collective Trust-Real Estate Fund~~: This is the same fund as above except that certain of the funds’ assets contain participant withdrawal policies with restrictions on redemption and are therefore not included in the fair value hierarchy.

Hedge Funds: These funds represent investments in other investment funds that seek a return utilizing a number of diverse investment strategies. The strategies, when combined, aim to reduce volatility and risk while attempting to deliver positive returns under all market conditions. Amounts are reported on a one-month lag. The fair value of hedge funds is determined using net asset value per share based on the fair value of the hedge fund’s underlying investments. ~~10%~~10% of the shares may be redeemed at the end of each month with a ~~15-day~~15-day notice and full redemptions are available at the end of each quarter with ~~60-day~~60-day notice and is limited to a percentage of the total net assets value of the fund. The net asset values are based on the fair value of each fund’s underlying investments. There are no unfunded commitments related to these hedge funds.

Non-pension Defined Benefit Postretirement Healthcare Plan

Cash and Cash Equivalents: This represents an investment in Northern Institutional Government Assets Portfolio, which is a government money market fund. As shares held reflect quoted prices in an active market, they are categorized as Level 1.

Components of Net Periodic Expense

The following table provides a reconciliation of components of the net periodic expense (in millions):


	Defined Benefit Pension Plan									Supplemental Non-qualified Defined Benefit Plans							Non-pension Defined Benefit Postretirement Healthcare Plan
For the years ended December 31,	2023			2022			2021			2023		2022			2021		2023			2022			2021
Service cost	$	2.5		$	3.9		$	5.0		$	3.1	$	(0.8	)	$	3.1	$	1.5		$	1.9		$	2.2
Interest cost		17.5			10.8			9.3			1.5		0.8			0.7		2.4			1.3			1.0
Expected return on assets		(18.7	)		(18.5	)		(20.8	)		—		—			—		(0.2	)		(0.1	)		(0.1	)
Net amortization of prior service cost		(0.1	)		(0.1	)		—			—		—			—		—			(0.3	)		(0.4	)
Recognized net actuarial loss (gain)		2.0			6.1			7.3			—		0.3			1.8		—			0.1			0.5
Net periodic expense	$	3.2		$	2.2		$	0.8		$	4.6	$	0.3		$	5.6	$	3.7		$	2.9		$	3.2

Service costs are recorded in Operations and maintenance expense while non-service costs are recorded in Other expense on the Consolidated Statements of Income.

Actuarial gains and losses are amortized using a straight-line method over the average remaining service period of active plan participants or over the average remaining lifetime of the remaining plan participants if the plan is viewed as “all or almost all” inactive participants.

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Other Plan Information

The following tables provide a reconciliation of the employee benefit planobligations and fair value of employee benefit plan assets, amounts recognized ~~in the~~on our Consolidated Balance Sheets, accumulated benefit obligation and ~~reconciliation of components of the net periodic expense and~~ elements of AOCI (in ~~thousands)~~millions):


	Defined Benefit Pension Plan			Supplemental Non-qualified Defined Benefit Plans			Non-pension Defined Benefit Postretirement Healthcare Plan			Defined Benefit Pension Plan			Supplemental Non-qualified Defined Benefit Plans			Non-pension Defined Benefit Postretirement Healthcare Plan
	2023									2022
Accumulated benefit obligation at December 31	$	341.8		$	46.7		$	51.1		$	350.2		$	45.2		$	49.7
Change in benefit obligation:
Projected benefit obligation at beginning of year	$	358.4		$	45.2		$	49.7		$	478.3		$	55.3		$	63.5
Service cost		2.5			3.1			1.5			3.9			(0.8	)		1.9
Interest cost		17.5			1.5			2.4			10.8			0.8			1.3
Actuarial (gain) loss		11.6			0.3			1.7			(97.9	)		(7.0	)		(12.3	)
Benefits paid		(41.9	)		(3.4	)		(5.3	)		(36.7	)		(3.1	)		(6.1	)
Plan participants’ contributions		—			—			1.1			—			—			1.4
Projected benefit obligation at end of year		348.1			46.7			51.1			358.4			45.2			49.7
Change in fair value of plan assets:
Fair value of plan assets at beginning of year		323.1			—			7.8			458.4			—			8.0
Investment income (loss)		27.4			—			0.2			(98.6	)		—			—
Employer contributions		—			3.5			4.3			—			3.1			4.5
Retiree contributions		—			—			1.1			—			—			1.4
Benefits paid		(41.9	)		(3.5	)		(5.4	)		(36.7	)		(3.1	)		(6.1	)
Fair value of plan assets at end of year		308.6			—			8.0			323.1			—			7.8
Funded status - deficiency	$	39.5		$	46.7		$	43.1		$	35.3		$	45.2		$	41.9
Amounts recognized on our Consolidated Balance Sheets as of December 31:
Regulatory assets	$	79.9		$	—		$	4.8		$	78.7		$	—		$	3.8
Current liabilities		—			2.4			4.2			—			2.2			4.4
Non-current assets		—			—			1.3			—			—			1.0
Non-current liabilities		39.4			44.3			40.2			35.2			43.0			38.5
Regulatory liabilities		2.9			—			5.5			2.8			—			6.2
Amounts recognized in AOCI, net of tax as of December 31:
Net (gain) loss	$	5.0		$	1.8		$	(0.7	)	$	5.2		$	1.6		$	(0.7	)
Prior service cost (gain)		—			—			0.1			(0.1	)		—			0.1
Total amounts included in AOCI, net of tax not yet recognized as components of net periodic expense	$	5.0		$	1.8		$	(0.6	)	$	5.1		$	1.6		$	(0.6	)

~~Employee Benefit Plan Obligations~~

Defined Benefit Pension Plan Supplemental Non-qualified Defined
Benefit Plans Non-pension Defined Benefit Postretirement Healthcare Plan
As of December 31, 2021 2020 2021 2020 2021 2020
Change in benefit obligation:
Projected benefit obligation at beginning of year $ 514,008 $ 485,376 $ 55,054 $ 54,088 $ 70,238 $ 65,277
Service cost (a)
5,038 5,411 3,149 1,579 2,237 2,056
Interest cost 9,313 13,426 706 1,099 1,058 1,649
Actuarial (gain) loss (14,037) 47,064 (1,073) 962 (5,165) 5,804
Amendments (561) — — — — —
Benefits paid (35,499) (37,269) (2,576) (2,674) (6,432) (6,058)
Plan participants’ contributions — — — — 1,548 1,510
Projected benefit obligation at end of year $ 478,262 $ 514,008 $ 55,260 $ 55,054 $ 63,484 $ 70,238

~~____________________~~

(a) For the year ended December 31, 2020, Service Cost for the Supplemental Non-qualified Defined Benefit Plans includes a $1.4 million correction of a prior year overstatement of Projected benefit obligation.

~~Fair Value Employee Benefit Plan Assets~~

Defined Benefit
Pension Plan Supplemental Non-qualified Defined
Benefit Plans
Non-pension Defined Benefit Postretirement Healthcare Plan (a)
As of December 31, 2021 2020 2021 2020 2021 2020
Change in fair value of plan assets:
Beginning fair value of plan assets $ 473,721 $ 434,284 $ — $ — $ 8,165 $ 8,305
Investment income (loss) 20,165 64,006 — — (35) 33
Employer contributions — 12,700 2,576 2,674 4,726 4,374
Retiree contributions — — — — 1,548 1,511
Benefits paid (35,499) (37,269) (2,576) (2,674) (6,432) (6,058)
Ending fair value of plan assets $ 458,387 $ 473,721 $ — $ — $ 7,972 $ 8,165

~~____________________~~

~~(a) Assets of VEBA trusts.~~

In 2012, we froze our Pension Plan and closed it to new participants. Since then, we have implemented various de-risking strategies including lump sum buyouts, the purchase of annuities and the reduction of return-seeking assets over time to a more liability-hedged portfolio. As a result, capital markets volatility ~~driven by the COVID-19 pandemic did not materially affect~~had a limited impact to our unfunded status.

~~Amounts Recognized in the Consolidated Balance Sheets~~

Defined Benefit
Pension Plan Supplemental
Non-qualified Defined Benefit Plans Non-pension Defined Benefit Postretirement Healthcare Plan
As of December 31, 2021 2020 2021 2020 2021 2020
Regulatory assets $ 67,403 $ 86,677 $ — $ — $ 11,660 $ 16,102
Current liabilities $ — $ — $ 2,156 $ 1,927 $ 4,584 $ 4,931
Non-current liabilities $ 19,872 $ 40,287 $ 53,104 $ 53,127 $ 50,949 $ 57,142
Regulatory liabilities $ 3,830 $ 3,607 $ — $ — $ 2,447 $ 2,140

~~102~~

Table of Contents

~~Accumulated Benefit Obligation~~

Assumptions


	Defined Benefit Pension Plan									Supplemental Non-qualified Defined Benefit Plans									Non-pension Defined Benefit Postretirement Healthcare Plan
	2023			2022			2021			2023			2022			2021			2023			2022			2021
Weighted-average assumptions used to determine benefit obligations:
Discount rate		4.99	%		5.17	%		2.88	%		4.93	%		5.13	%		2.77	%		4.97	%		5.14	%		2.79	%
Rate of increase in compensation levels		3.04	%		3.06	%		3.08	%		—			—			5.00	%	N/A			N/A			N/A
Weighted-average assumptions used to determine net periodic benefit cost for plan year:
Discount rate (a)		5.17	%		2.88	%		2.56	%		5.13	%		2.77	%		2.41	%		5.14	%		2.79	%		2.41	%
Expected long-term rate of return on assets (b)		6.00	%		4.25	%		4.50	%	N/A			N/A			N/A				3.10	%		1.70	%		1.80	%
Rate of increase in compensation levels		3.06	%		3.08	%		3.34	%		—			—			5.00	%	N/A			N/A			N/A

(a)

~~Components of Net Periodic Expense~~

Defined Benefit
Pension Plan Supplemental
Non-qualified Defined Benefit Plans Non-pension Defined Benefit Postretirement Healthcare Plan
For the years ended December 31, 2021 2020 2019 2021 2020 2019 2021 2020 2019
Service cost (a)
$ 5,038 $ 5,411 $ 5,383 $ 3,149 $ 1,579 $ 4,995 $ 2,237 $ 2,056 $ 1,815
Interest cost 9,313 13,426 17,374 706 1,099 1,295 1,058 1,649 2,247
Expected return on assets (20,876) (22,591) (24,401) — — — (136) (182) (230)
Net amortization of prior service cost — — 26 — 2 2 (434) (546) (398)
Recognized net actuarial loss (gain) 7,315 8,372 3,763 1,754 1,702 535 466 20 —
Net periodic expense $ 790 $ 4,618 $ 2,145 $ 5,609 $ 4,382 $ 6,827 $ 3,191 $ 2,997 $ 3,434

~~____________________~~

For the years ended December 31, 2021, 2020 and 2019, Service costs were recorded in Operations and maintenance expense while non service costs were recorded in Other expense on the Consolidated Statements of Income.

~~AOCI Amounts (After-Tax)~~

Defined Benefit
Pension Plan Supplemental
Non-qualified Defined Benefit Plans Non-pension Defined Benefit Postretirement Healthcare Plan
As of December 31, 2021 2020 2021 2020 2021 2020
Net (gain) loss $ 4,398 $ 5,511 $ 7,159 $ 9,323 $ (308) $ 100
Prior service cost (gain) (46) — — — (27) (144)
Total amounts included in AOCI, after-tax not yet recognized as components of net periodic expense $ 4,352 $ 5,511 $ 7,159 $ 9,323 $ (335) $ (44)

~~Assumptions~~

Defined Benefit
Pension Plan Supplemental
Non-qualified Defined Benefit Plans Non-pension Defined Benefit Postretirement Healthcare Plan
Weighted-average assumptions used to determine benefit obligations: 2021 2020 2019 2021 2020 2019 2021 2020 2019
Discount rate 2.88 % 2.56 % 3.27 % 2.77 % 2.41 % 3.14 % 2.79 % 2.41 % 3.15 %
Rate of increase in compensation levels 3.08 % 3.34 % 3.49 % 5.00 % 5.00 % 5.00 % N/A N/A N/A

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~~Table of Contents~~

Defined Benefit
Pension Plan Supplemental
Non-qualified Defined Benefit Plans Non-pension Defined Benefit Postretirement Healthcare Plan
Weighted-average assumptions used to determine net periodic benefit cost for plan year: 2021 2020 2019 2021 2020 2019 2021 2020 2019
Discount rate (a)
2.56 % 3.27 % 4.40 % 2.41 % 3.14 % 4.34 % 2.41 % 3.15 % 4.28 %
Expected long-term rate of return on assets (b)
4.50 % 5.25 % 6.00 % N/A N/A N/A 1.80 % 2.35 % 3.00 %
Rate of increase in compensation levels 3.34 % 3.49 % 3.52 % 5.00 % 5.00 % 5.00 % N/A N/A N/A

~~____________________~~

~~(a)~~ The estimated discount rate for the Defined Benefit Pension Plan is ~~2.88%~~5.0% for the calculation of the ~~2022~~2024 net periodic pension costs.

(b)

The expected rate of return on plan assets for the Defined Benefit Pension Plan is ~~4.25%~~6.0% for the calculation of the ~~2022~~2024 net periodic pension cost.

The healthcare benefit obligation at December 31 was determined as follows:


	2023			2022
Trend Rate - Medical
Pre-65 for next year - All Plans		6.69	%		7.00	%
Pre-65 Ultimate trend rate - Black Hills Corp		4.50	%		4.50	%
Trend Year	2034			2031

Post-65 for next year - All Plans		5.81	%		6.00	%
Post-65 Ultimate trend rate - Black Hills Corp		4.50	%		4.50	%
Trend Year	2034			2031

2021 2020
Trend Rate - Medical
Pre-65 for next year - All Plans 6.05% 6.10%
Pre-65 Ultimate trend rate - Black Hills Corp 4.50% 4.50%
Trend Year 2030 2027
Post-65 for next year - All Plans 5.10% 4.92%
Post-65 Ultimate trend rate - Black Hills Corp 4.50% 4.50%
Trend Year 2030 2029

The following benefit payments to employees, which reflect future service, are expected to be paid (in ~~thousands)~~millions):

Defined Benefit Pension Plan Supplemental Non-qualified Defined Benefit Plans Non-pension Defined Benefit Postretirement Healthcare Plan
2022 $ 26,249 $ 2,156 $ 5,806
2023 $ 27,133 $ 2,224 $ 5,334
2024 $ 27,683 $ 2,410 $ 5,042
2025 $ 28,650 $ 2,757 $ 4,865
2026 $ 28,968 $ 2,782 $ 4,752
2027-2031 $ 144,422 $ 12,553 $ 21,615


	Defined Benefit Pension Plan		Supplemental Non-qualified Defined Benefit Plans		Non-pension Defined Benefit Postretirement Healthcare Plan
2024	$	24.5	$	2.4	$	5.2
2025		25.4		2.8		5.0
2026		26.0		2.8		4.9
2027		25.9		2.7		4.8
2028		26.2		2.6		4.6
2029 - 2033	$	129.7	$	11.7	$	21.4

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(14) SHARE-BASED COMPENSATION PLANS

Our Amended and Restated 2015 Omnibus Incentive Plan allows for the granting of stock, restricted stock, restricted stock units, stock options, performance shares and performance share units. We had ~~416,325~~2,132,275 shares available to grant at December 31, ~~2021.~~

2023.

Compensation expense is determined using the grant date fair value estimated in accordance with the provisions of accounting standards for stock compensation and is recognized over the vesting periods of the individual awards. As of December 31, ~~2021,~~2023, total unrecognized compensation expense related to non-vested stock awards was ~~approximately $14~~$10.6 million and is expected to be recognized over a weighted-average period of ~~two~~1.7 years. Stock-based compensation expense, which is included in Operations and maintenance on the accompanying Consolidated Statements of Income, was as follows for the years ended December 31 (in ~~thousands)~~millions):


	2023		2022		2021
Stock-based compensation expense	$	7.0	$	8.6	$	9.7

2021 2020 2019
Stock-based compensation expense $ 9,655 $ 5,373 $ 12,095

Restricted Stock

The fair value of restricted stock and restricted stock unit awards equals the market price of our stock on the date of grant.

The shares carry a restriction on the ability to sell the shares until the shares vest. The shares substantially vest over three years, contingent on continued employment. Compensation expense related to the awards is recognized over the vesting period.

Table of Contents

A summary of the status of the restricted stock and restricted stock units at December 31, ~~2021,~~2023, was as follows:

Restricted Stock Weighted-Average Grant Date Fair Value
(in thousands)
Balance at January 1, 2021 196 $ 69.05
Granted 118 65.64
Vested (83) 67.85
Forfeited (12) 69.59
Balance at December 31, 2021 219 $ 67.64


	Restricted Stock			Weighted-Average Grant Date Fair Value
Balance at January 1, 2023		178,129		$	67.23
Granted		110,198			63.33
Vested		(97,084	)		67.56
Forfeited		(26,556	)		65.10
Balance at December 31, 2023		164,687		$	64.81

The weighted-average grant-date fair value of restricted stock granted, and the total fair value of shares vested during the years ended December 31, were as follows:


	Weighted-Average Grant Date Fair Value		Total Fair Value of Shares Vested
			(in millions)
2023	$	63.33	$	5.9
2022	$	69.03	$	6.4
2021	$	65.64	$	5.4

Weighted-Average Grant Date Fair Value Total Fair Value of Shares Vested
(in thousands)
2021 $ 65.64 $ 5,400
2020 $ 69.49 $ 6,722
2019 $ 73.66 $ 8,438

As of December 31, ~~2021,~~2023, there was ~~$11~~$6.3 million of unrecognized compensation expense related to non-vested restricted stock that is expected to be recognized over a weighted-average period of ~~2.2~~ 1.6 years.

Performance Share Units

Beginning in 2021, certain officers of the Company, and its subsidiaries, were granted performance share units which have a three-year vesting period, do not have voting rights until vested, and are subject to three specified conditions. A market condition of relative total shareholder return and two equally weighted performance metrics of average earnings per share and the average cost to serve. Beginning in 2023, the metric of natural gas emissions reduction by 2035 was added, resulting in three equally weighted performance metrics. The units are paid 100% in common stock should conditions be met and can range from 0% to 200% of the target award. Dividend equivalents are accrued during the vesting period and paid out based on the final number of shares awarded. In the event of participant’s death or retirement at age 55 or older, shares awarded vest on a pro-rata basis commensurate with the months of service performed over the three-year period.

Performance Share Units - Market Condition

The fair value of each share unit is based on the Company’s closing price at December 31 of the year prior to the award and a Monte Carlo simulation. The Monte Carlo simulation is used to estimate expected share payout based on the Company’s TSR for a three-year performance period relative to the designated peer group beginning January 1 of the award year. The significant assumptions included in the company's Monte Carlo simulations were as follows:


	2023	2022
Fair value of share units award	$77.95	$74.48
Risk-free rate	3.84%	0.97%
Black Hills Corporation’s common stock volatility	31%	30%
Volatility range for the peer group	24-39%	22-67%

Performance Share Units - Performance Condition

A performance condition share unit vests at the end of the three-year performance period if the specified performance conditions are achieved. The conditions are based on the Company’s average earnings per share, the average cost to serve and natural gas emissions reductions by 2035. The grant-date fair value for an individual outcome of a performance condition is determined by the closing common share price on the grant date or, beginning in 2023, the average ten-day closing common share price preceding the grant date.

Table of Contents

The following table summarizes the performance share unit activity for the year ended December 31, 2023:


	Performance Share Units - Market Condition					Performance Share Units - Performance Condition
	Share Units			Weighted-Average Fair Value per Share Unit		Share Units			Weighted-Average Fair Value per Share Unit
Nonvested at January 1, 2023		68,474		$	69.91		45,666		$	66.19
Granted		50,440			77.95		21,615			71.50
Forfeited		(8,167	)		73.43		(4,627	)		68.03
Nonvested at December 31, 2023		110,747		$	73.31		62,654		$	67.88

As of December 31, 2023, there was $4.0 million of unrecognized compensation expense related to outstanding performance share/units that is expected to be recognized over a weighted-average period of 1.8 years.

On January 25, 2024, the Compensation Committee of our Board of Directors confirmed a payout equal to 16.21% of target shares valued at $0.5 million. The payout was fully accrued at December 31, 2023.

Performance Share Plan

Prior to 2021, certain officers of the Company and its subsidiaries became participants in a market-based performance share award plan. Performance shares are awarded based on our total shareholder return over designated performance periods as measured against a selected peer group. In addition, certain stock price performance must be achieved for a payout to occur. The final value of the performance shares will vary according to the number of shares of common stock that are ultimately granted based upon the actual level of attainment of the performance criteria.

These performance share awards ~~are~~were paid ~~50%~~50% in cash and ~~50%~~50% in common stock. The cash portion accrued is classified as a liability and the stock portion is classified as equity. In the event of a change-in-control, performance awards are paid 100% in cash. If it is determined that a change-in-control is probable, the equity portion of $2.1 million at December 31, 2021 would be reclassified as a liability.

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The outstanding performance periods at December 31, ~~2021~~2023 were as ~~follows (shares in thousands):~~

Possible Payout Range of Target
Grant Date Performance Period Target Grant of Shares Minimum Maximum
January 1, 2020 January 1, 2020 - December 31, 2022 36 0% 200%
January 1, 2019 January 1, 2019 - December 31, 2021 36 0% 200%

follows:


			Possible Payout Range of Target
Grant Date	Performance Period	Target Grant of Shares	Minimum	Maximum
January 1, 2020	January 1, 2020 - December 31, 2022	35,571	0%	200%

A summary of the status of the Performance Share Plan at December 31, ~~2021~~2023 was as follows:


	Equity Portion					Liability Portion
				Weighted-Average Grant Date					Weighted-Average Fair Value at
	Shares			Fair Value (a)		Shares			December 31, 2023
Performance Shares balance at beginning of period		18,105		$	81.42		18,105
Granted		—			—		—
Forfeited		—			—		—
Vested		(18,105	)		81.42		(18,105	)
Performance Shares balance at end of period		—		$	—		—		$	—

Equity Portion Liability Portion
Weighted-Average Grant Date Fair Value (a)
Weighted-Average Fair Value at
Shares Shares December 31, 2021
(in thousands) (in thousands)
Performance Shares balance at beginning of period 61 $ 69.71 61
Granted — — —
Forfeited — — —
Vested (25) 61.82 (25)
Performance Shares balance at end of period 36 $ 68.14 36 $ 31.51
~~____________________~~(a)

~~(a)~~ The grant date fair values for the performance shares granted in 2020 ~~and 2019~~ were determined by Monte Carlo simulation using a blended volatility of ~~18% and 21%~~18%, ~~respectively,~~ comprised of ~~50%~~50% historical volatility and ~~50%~~50% implied volatility and the average risk-free interest rate of the three-year United States Treasury security rate in effect as of the grant date.

~~The weighted-average grant-date fair value of performance share awards granted was as follows in the years ended:~~


	~~Weighted Average Grant Date Fair Value~~

~~December 31, 2020~~	$	~~81.42~~
~~December 31, 2019~~	$	~~68.72~~

Performance plan payouts have been as follows (in ~~thousands):~~

Performance Period Year Paid Stock Issued Cash Paid Total Intrinsic Value
January 1, 2018 to December 31, 2020 2021 28 $ 1,647 $ 3,294
January 1, 2017 to December 31, 2019 2020 14 $ 1,100 $ 2,199
January 1, 2016 to December 31, 2018 2019 44 $ 2,860 $ 5,720

On January 25, 2022, the Compensation Committee of our Board of Directors determined that the Company’s total shareholder return for the January 1, 2018 to December 31, 2020 performance period was at the 30th percentile of its peer group and confirmed a payout equal to 40.17% of target shares, valued at $1.0 million. The payout was fully accrued at December 31, 2021.

~~Performance Share Units~~

Beginning in 2021, certain officers of the Company, and its subsidiaries, were granted performance share units which have a three-year vesting period, do not have voting rights until vested, and are subject to three specified conditions. A market condition of relative total shareholder return, and two equally weighted performance metrics of average earnings per share and the average cost to serve. The units are paid 100% in commonmillions, except stock should conditions be met and can range from 0% to 200% of the target award. Dividend equivalents are accrued during the vesting period and paid out based on the final number of shares awarded. In the event of participant’s death or retirement at age 55 or older, awarded vest on a pro-rata basis over the three-year period.

issued):

~~106~~


Performance Period	Year Paid	Stock Issued		Cash Paid		Total Intrinsic Value
January 1, 2020 to December 31, 2022	2023		4,958	$	0.3	$	0.7
January 1, 2019 to December 31, 2021	2022		7,582	$	0.5	$	1.0
January 1, 2018 to December 31, 2020	2021		27,515	$	1.6	$	3.3

Table of Contents

~~Performance Share Units - Market Condition~~

The fair value of each share unit is based on the Company’’s closing price at December 31 of the year prior to the award and a Monte Carlo simulation. The Monte Carlo simulation is used to estimate expected share payout based on the Company’s TSR for a three-year performance period relative to the designated peer group beginning January 1 of the award year.

2021
Fair value of share units award $64.97
Three-year risk-free rate 0.17%
Black Hills Corporation’s common stock volatility 33%
Volatility range for the peer group 25 % - 76%

~~Performance Share Units - Performance Condition~~

A performance condition share unit vests at the end of the three-year performance period if the specified performance conditions are achieved. The conditions are based on the Company’s average earnings per share and the average cost to serve. The grant-date fair value for an individual outcome of a performance condition is determined by the closing common share price on the grant date.

~~The following table summarizes the performance share unit activity for the year ended December 31, 2021:~~

Performance Share Units -
Market Condition Performance Share Units -
Performance Condition
Share Units Weighted-Average Fair Value per Share Unit Share Units Weighted-Average Fair Value per Share Unit
Nonvested at January 1, 2021 — $ — — $ —
Granted 32,903 64.97 21,948 61.45
Nonvested at December 31, 2021 32,903 $ 64.97 21,948 $ 61.45

As of December 31, 2021, there was $2.9 million of unrecognized compensation expense related to outstanding performance share/unit plans that is expected to be recognized over a weighted-average period of 1.8 years.

(15) INCOME TAXES

~~Winter Storm Uri~~

IRS Revenue Procedure 2023-15

~~As discussed~~

On April 14, 2023, the IRS released Revenue Procedure 2023-15 “Amounts paid to improve tangible property.” The Revenue Procedure provides a safe harbor method of accounting that taxpayers may use to determine whether costs to repair, maintain, replace, or improve natural gas transmission and distribution property must be capitalized. The revenue procedure may be adopted in ~~Note 2~~ ~~above, our Utilities submitted cost recovery applications which seek~~tax years ending after May 1, 2023. We are currently assessing the Revenue Procedure to recover incremental costs from Winter Storm Uri through a regulatory mechanism. We expect to recover these costs from customers over several years. Winter Storm Uri costs, which will be deductible in our 2021 tax return, created a net deferred tax liability which had a balance of $124 million as of December 31, 2021. The deferred tax liability will reverse with the same timing as the costs are recovered from our customers.

The income tax deduction recognized from Winter Storm Uri will create a $509 million NOL in our 2021 federal income tax return and a $375 million NOL in our state income tax returns. Our federal NOL carryforwards related to Winter Storm Uri and other recent adjustments no longer expire due to the TCJA; however, our state NOL carryforwards expire at various dates from 2022 to 2041. We do not anticipate material changes to our valuation allowance against the state NOL carryforwards from Winter Storm Uri. Therefore, we did not record an additional valuation allowance against the state NOL carryforwards as of December 31, 2021.

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~~CARES Act~~

On March 27, 2020, President Trump signed the CARES Act, which contained, in part, an allowance for deferral of the employer portion of Social Security employment tax liabilities until 2021 and 2022, as well as a COVID-19 employee retention tax credit of up to $5,000 per eligible employee.

During the year ended December 31, 2020, we utilized the payroll tax deferral provision which allowed us to defer payment of approximately $10 million of Social Security employment tax liabilities, of which $4.8 million was subsequently paid in 2021 and the remaining portion will be paid in 2022. During the year ended December 31, 2021, we completed our study of the CARES Act employee retention tax credits and recognized $1.2 million of gross payroll tax credits.

~~TCJA~~

On December 22, 2017, the U.S. government enacted comprehensive tax legislation commonly referred to as the TCJA. The TCJA reduced the U.S. federal corporate tax rate from 35% to 21%. As such, the Company remeasured the deferred income taxes at the 21% federal tax rate as of December 31, 2017. The entities subject to regulatory construct have made their best estimate regarding the probability of settlements of net regulatory liabilities established pursuant to the TCJA. The amount of the settlements may change based on decisions and actions by the federal and state utility commissions, which could have a materialdetermine its impact on the Company’s future results of operations, cash flows or financial position. A majority of the excess deferred taxes are subject to the average rate assumption method, as prescribed by the IRS, and will generally be amortized as a reduction of customer rates over the remaining lives of the related assets. As of December 31, 2021, the Company has amortized, or provided bill credits for, $23 million of the regulatory liability. The portion that was eligible for amortization under the average rate assumption method in 2021 but is awaiting resolution of the treatment of these amounts in future regulatory proceedings has not been recognized, and may be refunded in customer rates at any time in accordance with the resolution of pending or future regulatory proceedings.

our tax repairs deduction.

Income Tax Expense (Benefit)

Income tax expense (benefit) from continuing operations for the years ended December 31 was (in ~~thousands)~~millions):


	2023			2022			2021
Current:
Federal	$	(0.8	)	$	(0.5	)	$	0.6
State		1.0			0.1			(0.7	)
Current income tax (benefit)		0.2			(0.4	)		(0.1	)
Deferred:
Federal		30.9			23.2			2.2
State		(5.5	)		2.4			5.1
Deferred income tax expense		25.4			25.6			7.3

Income tax expense	$	25.6		$	25.2		$	7.2

2021 2020 2019
Current:
Federal $ 574 $ (6,020) $ (8,578)
State (666) 847 138
Current income tax (benefit) (92) (5,173) (8,440)
Deferred:
Federal 2,170 35,672 34,551
State 5,091 2,419 3,469
Deferred income tax expense 7,261 38,091 38,020
Income tax expense $ 7,169 $ 32,918 $ 29,580

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Effective Tax Rates

The effective tax rate differs from the federal statutory rate for the years ended December 31, as follows:


	2023			2022			2021
Federal statutory rate		21.0	%		21.0	%		21.0	%
State income tax (net of federal tax effect) (a)		(0.8	)		0.5			1.2
Non-controlling interest (b)		(1.0	)		(0.9	)		(1.2	)
Tax credits		(6.2	)		(7.7	)		(8.4	)
Flow-through adjustments (c)		(1.7	)		(1.4	)		(3.2	)
Amortization of excess deferred income taxes (d)		(3.0	)		(2.5	)		(3.1	)
TCJA bill credits (e)		—			(0.4	)		(3.6	)
Other		0.2			(0.1	)		0.1
Effective Tax Rate		8.5	%		8.5	%		2.8	%

(a)

The state effective tax rate contains the tax expense attributable to multiple statutory state rate changes in the Company's state jurisdictions. For the year ended December 31, 2023, we recognized an $8.2 million tax benefit from a Nebraska income tax rate decrease.

2021 2020 2019
Federal statutory rate 21.0 % 21.0 % 21.0 %
State income tax (net of federal tax effect) 1.2 2.4 1.5
Non-controlling interest (a)
(1.2) (1.2) (1.2)
Tax credits(b)
(8.4) (9.2) (3.9)
Flow-through adjustments (c)
(3.2) (1.6) (2.4)
Uncertain Tax Benefits 0.3 1.5 —
Valuation Allowance — 0.7 —
Other tax differences (0.2) 0.6 (1.6)
Amortization of excess deferred income tax expense (d)
(3.1) (2.3) (1.2)
TCJA bill credits (e)
(3.6) — —
Effective Tax Rate 2.8 % 11.9 % 12.2 %

(b)

~~____________________~~

~~(a)~~ The effective tax rate reflects the income attributable to the non-controlling interest in Black Hills Colorado IPP for which a tax provision was not recorded.

~~(b) In 2020, the Company completed a research and development study which encompassed tax years from 2013 to 2019.~~

(c)

Flow-through adjustments related primarily to accounting method changes for tax purposes that allow us to take a current tax deduction for repair costs and certain indirect ~~costs and gain deferral.~~costs. We recorded a deferred income tax liability in recognition of the temporary difference created between book and tax treatment and flowed the tax benefit through to tax expense. A regulatory asset was established to reflect the recovery of future increases in taxes payable from customers as the temporary differences reverse. As a result of this regulatory treatment, we continue to record tax benefits consistent with the flow-through method.

(d)

Primarily TCJA - see ~~above.~~Note 2 for additional information.

(e) ~~As discussed in~~ ~~Note 2~~ ~~above,~~

Primarily related to one-time bill credits of TCJA benefits delivered to Colorado Electric and Nebraska Gas ~~bill credits, which represent a disposition of excess deferred income tax benefits resulting from the TCJA, were delivered to~~ customers in 2021. These bill credits, which resulted in a reduction in revenue, were offset by a reduction in income tax expense and resulted in a minimal impact to Net income for the year ended December 31, 2021.

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Deferred Tax Assets and Liabilities

The temporary differences, which gave rise to the net deferred tax liability, for the years ended December 31 were as follows (in ~~thousands)~~millions):


	2023			2022
Deferred tax assets:
Regulatory liabilities	$	74.0		$	74.7
State tax credits		22.8			22.8
Federal NOL		146.6			192.0
State NOL		16.5			23.0
Partnership		12.2			12.8
Credit Carryovers		110.1			90.9
Other deferred tax assets		33.7			45.4
Less: Valuation allowance		(15.4	)		(15.5	)
Total deferred tax assets		400.5			446.1

Deferred tax liabilities:
Accelerated depreciation, amortization and other property-related differences		(686.2	)		(645.7	)
Regulatory assets		(65.6	)		(94.4	)
Goodwill		(67.8	)		(57.9	)
State deferred tax liability		(84.5	)		(98.2	)
Other deferred tax liabilities		(44.4	)		(58.8	)
Total deferred tax liabilities		(948.5	)		(955.0	)

Net deferred tax liability	$	(548.0	)	$	(508.9	)

2021 2020
Deferred tax assets:
Regulatory liabilities $ 77,099 $ 90,535
State tax credits 23,342 23,339
Federal NOL (a)
227,535 96,155
State NOL (a)
33,639 9,914
Partnership 13,395 15,601
Credit Carryovers 68,646 51,445
Other deferred tax assets 31,996 40,143
Less: Valuation allowance (14,719) (13,943)
Total deferred tax assets 460,933 313,189
Deferred tax liabilities:
Accelerated depreciation, amortization and other property-related differences (597,284) (551,137)
Regulatory assets (a)
(124,582) (28,007)
Goodwill (45,471) (30,590)
State deferred tax liability (a)
(109,136) (73,910)
Other deferred tax liabilities (49,848) (38,169)
Total deferred tax liabilities (926,321) (721,813)
Net deferred tax liability $ (465,388) $ (408,624)

~~____________________~~

~~(a) Increase primarily driven by Winter Storm Uri — see above.~~

Net Operating Loss and Tax Credit Carryforwards

At December 31, ~~2021,~~2023, we have federal NOL and state NOL and tax credit carryforwards that will expire at various dates as follows (in ~~thousands)~~millions):


	Amounts		Expiration Dates
Federal NOL Carryforward	$	111.0	2036-2037
Federal NOL Carryforward	$	587.3	No expiration
Federal Tax Credit Carryforward	$	110.1	2028-2043

State NOL Carryforward (a)	$	325.3	2024-2042
State Tax Credit Carryforward	$	22.8	2024-2038

Amounts Expiration Dates
Federal NOL Carryforward $ 476,033 2022 to 2037
Federal NOL Carryforward $ 607,465 No expiration
State NOL Carryforward (a)
$ 572,203 2022 to 2041

(a)

~~____________________~~

~~(a)~~ The carryforward balance is reflected on the basis of apportioned tax losses to jurisdictions imposing state income taxes.

As of December 31, ~~2021,~~2023, we had a ~~$1.1~~$1.0 million valuation allowance against the state NOL carryforwards. Our ~~2021~~2023 analysis of the ability to utilize such NOLs resulted in 0no increase in the valuation allowance. If the valuation allowance is adjusted due to higher or lower than anticipated utilization of the NOLs, the offsetting amount will affect tax expense.

~~110~~

~~Table~~As of ~~Contents~~December 31, 2023, we had a $

14.4 million valuation allowance against the state ITC carryforwards. Our 2023 analysis of the ability to utilize such ITC resulted in a slight decrease in the valuation allowance.

Unrecognized Tax Benefits

The following table reconciles the total amounts of unrecognized tax benefits, without interest, at the beginning and end of the period included in Other deferred credits and other liabilities on the accompanying Consolidated Balance Sheets (in ~~thousands)~~millions):


Changes in Uncertain Tax Positions:	2023			2022			2021
Beginning balance	$	11.9		$	10.6		$	8.4
Additions for prior year tax positions		—			—			0.5
Reductions for prior year tax positions		(0.3	)		(0.8	)		(0.7	)
Additions for current year tax positions		2.1			2.1			2.4
Ending balance	$	13.7		$	11.9		$	10.6

Changes in Uncertain Tax Positions: 2021 2020 2019
Beginning balance $ 8,383 $ 4,165 $ 3,583
Additions for prior year tax positions 448 3,788 446
Reductions for prior year tax positions (732) (1,313) (862)
Additions for current year tax positions 2,455 1,743 998
Ending balance $ 10,554 $ 8,383 $ 4,165

The total amount of unrecognized tax benefits that, if recognized, would impact the effective tax rate is approximately ~~$5.1~~$6.5 million.

Table of Contents

We recognized no interest expense associated with income taxes for the years ended December 31, ~~2021, December 31, 2020~~2023, 2022 and ~~December 31, 2019.~~2021. We had no accrued interest (before tax effect) associated with income taxes at December 31, ~~2021~~2023 and ~~December 31, 2020.~~

2022.

The Company is subject to federal income tax as well as income tax in various state and local jurisdictions. Black Hills Gas, Inc. and subsidiaries, which filed a separate consolidated tax return from BHC and subsidiaries through March 31, 2018, is under examination by the IRS for 2014. BHC is no longer subject to examination for tax years prior to 2017.

As of December 31, ~~2021,~~2023, we do not have any tax positions for which it is reasonably possible that the total amount of unrecognized tax benefits will significantly increase or decrease on or before December 31, ~~2022.~~2024.

~~State~~

We are subject to federal income tax ~~credits have been generated~~as well as income tax in various state and ~~are available to offset future state income taxes. At December 31, 2021, we had the following state tax credit carryforwards (in thousands):~~

State Tax Credit Carryforwards Amounts Expiration Year
ITC $ 23,060 2023 to 2041
Research and development $ 282 No expiration

local jurisdictions. As of December 31, 2023, tax years for 2020, 2021, and 2022 are subject to examination by the tax authorities. With few exceptions, we ~~had a $13.6 million valuation allowance against the~~are no longer subject to U.S. or state ~~ITC carryforwards. Our 2021 analysis~~exam for years before 2020. Tax years 2017 and 2018 was open as of the ability to utilize such ITC resulted in a $0.8 million increase in the valuation allowance, which resulted in an increase to tax expense of $0.8 million. The valuation allowance adjustment was primarily attributable to changes in forecasted future state taxable income.

December 31, 2023.

(16) BUSINESS SEGMENT INFORMATION

Our ~~chief operating decision maker (CODM)~~Chief Executive Officer, who is considered to be our CODM, reviews financial information presented on an operating segment basis for purposes of making decisions, allocating resources and assessing financial performance. Our operating segments are based on our method of internal reporting, which is generally segregated by differences in products and services. All of our operations and assets are located within the United States.

Our Gas Utilities segment consists of the operating results of our regulated natural gas utility subsidiaries in Arkansas, Colorado, Iowa, Kansas, Nebraska and Wyoming.

Corporate and Other represents certain unallocated expenses for administrative activities that support our operating segments. Corporate and Other also includes business development activities that are not part of our operating segments and inter-segment eliminations.

Our CODM assesses the performance of our operating segments based on operating income.

In the prior year, we had reported four operating segments: Electric Utilities, Gas Utilities, Power Generation and Mining. In the fourth quarter of 2021, we changed our operating segments to align with the revised manner in which our Our CODM reviews ~~our financial performance and allocates resources. Our power generation and mining businesses, which were previously presented as separate~~capital expenditures by operating segments, are now part of our Electric Utilities segment. This change aligns with our vertically integrated business model for our Electric Utilities. Comparative periods presented reflect this change.

segment rather than any individual or total asset amount. Our operating segments are equivalent to our reportable segments.

Segment information was as follows (in ~~thousands)~~millions):


	Consolidating Income Statement
Year ended December 31, 2023	Electric Utilities		Gas Utilities		Corporate and Other			Total
Revenue -
External Customers	$	853.6	$	1,477.7	$	—		$	2,331.3
Inter-segment		11.4		6.5		(17.9	)		—
Total revenue		865.0		1,484.2		(17.9	)		2,331.3

Fuel, purchased power and cost of natural gas sold		200.1		783.2		(0.4	)		982.9
Operations and maintenance		236.2		328.7		(12.9	)		552.0
Depreciation, depletion and amortization		142.6		113.9		0.3			256.8
Taxes - property and production		37.3		29.6		—			66.9
Operating income (loss)	$	248.8	$	228.8	$	(4.9	)	$	472.7

Interest expense, net									(167.9	)
Other income (expense), net									(3.2	)
Income tax (expense)									(25.6	)
Net income									276.0
Net income attributable to non-controlling interest									(13.8	)
Net income available for common stock								$	262.2

Total Assets (net of intercompany eliminations) as of December 31, 2021 2020
Electric Utilities $ 3,796,662 $ 3,602,233
Gas Utilities 5,246,370 4,376,204
Corporate and Other 88,864 110,349
Total assets $ 9,131,896 $ 8,088,786

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	Consolidating Income Statement
Year ended December 31, 2022	Electric Utilities		Gas Utilities		Corporate and Other			Total
Revenue -
External Customers	$	888.4	$	1,663.4	$	—		$	2,551.8
Inter-segment		11.8		5.7		(17.5	)		—
Total revenue		900.2		1,669.1		(17.5	)		2,551.8

Fuel, purchased power and cost of natural gas sold		266.3		965.1		(0.8	)		1,230.6
Operations and maintenance		244.8		317.3		(13.7	)		548.4
Depreciation, depletion and amortization		135.9		114.7		0.3			250.9
Taxes - property and production		38.9		27.8		—			66.7
Operating income (loss)	$	214.3	$	244.2	$	(3.3	)	$	455.2

Interest expense, net									(161.0	)
Other income (expense), net									1.8
Income tax (expense)									(25.2	)
Net income									270.8
Net income attributable to non-controlling interest									(12.4	)
Net income available for common stock								$	258.4


	Consolidating Income Statement
Year ended December 31, 2021	Electric Utilities		Gas Utilities		Corporate and Other			Total
Revenue -
External Customers	$	830.7	$	1,118.4	$	—		$	1,949.1
Inter-segment		11.5		6.5		(18.0	)		—
Total revenue		842.2		1,124.9		(18.0	)		1,949.1

Fuel, purchased power and cost of natural gas sold		248.0		494.7		(0.8	)		741.9
Operations and maintenance		224.5		290.2		(13.0	)		501.7
Depreciation, depletion and amortization		131.5		104.2		0.3			236.0
Taxes - property and production		35.5		24.6		—			60.1
Operating income (loss)	$	202.7	$	211.2	$	(4.5	)	$	409.4

Interest expense, net									(152.4	)
Other income (expense), net									1.4
Income tax (expense)									(7.2	)
Net income									251.2
Net income attributable to non-controlling interest									(14.5	)
Net income available for common stock								$	236.7


Capital Expenditures (a) for the years ended December 31,	Capital Expenditures (a) for the years ended December 31,	2021		2020		2019		2023		2022		2021
Electric Utilities	Electric Utilities	$	285,770	$	288,683	$	316,687	$	210.7	$	243.1	$	285.8
Gas Utilities	Gas Utilities	383,320		449,209		512,366			371.9		349.5		383.3
Corporate and Other	Corporate and Other	10,500		17,500		20,702			7.3		5.1		10.5
Total capital expenditures	Total capital expenditures	$	679,590	$	755,392	$	849,755	$	589.9	$	597.7	$	679.6

~~____________________~~

(a)

Includes accruals for property, plant and equipment as disclosed in the Supplemental Cash Flow Information to the Consolidated Statement of Cash Flows.

Consolidating Income Statement
Year ended December 31, 2021 Electric Utilities Gas Utilities Corporate Inter-Company Eliminations Total
Revenue -
Contracts with customers $ 825,404 $ 1,105,430 $ — $ — $ 1,930,834
Other revenues 5,336 12,932 — — 18,268
830,740 1,118,362 — — 1,949,102
Inter-company operating revenue -
Contracts with customers 11,518 6,110 196 (17,824) —
Other revenues — 393 356,151 (356,544) —
11,518 6,503 356,347 (374,368) —
Total revenue 842,258 1,124,865 356,347 (374,368) 1,949,102
Fuel, purchased power and cost of natural gas sold 248,018 494,738 96 (918) 741,934
Operations and maintenance, including taxes 260,036 314,810 293,265 (306,325) 561,786
Depreciation, depletion and amortization 131,528 104,160 26,838 (26,573) 235,953
Operating income (loss) $ 202,676 $ 211,157 $ 36,148 $ (40,552) $ 409,429
Interest expense, net (152,404)
Impairment of investment —
Other income (expense), net 1,404
Income tax benefit (expense) (7,169)
Net income 251,260
Net income attributable to non-controlling interest (14,516)
Net income available for common stock $ 236,744

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Consolidating Income Statement
Year ended December 31, 2020 Electric Utilities Gas Utilities Corporate Inter-Company Eliminations Total
Revenue -
Contracts with customers $ 721,108 $ 959,696 $ — $ — $ 1,680,804
Other revenues 6,175 9,962 — $ — 16,137
727,283 969,658 — — 1,696,941
Inter-company operating revenue -
Contracts with customers 11,574 4,724 167 (16,465) —
Other revenues — 288 352,976 (353,264) —
11,574 5,012 353,143 (369,729) —
Total revenue 738,857 974,670 353,143 (369,729) 1,696,941
Fuel, purchased power and cost of natural gas sold 138,572 354,645 83 (896) 492,404
Operations and maintenance, including taxes 265,679 303,577 284,501 (301,980) 551,777
Depreciation, depletion and amortization 123,632 100,559 25,150 (24,884) 224,457
Operating income (loss) 210,974 215,889 43,409 (41,969) 428,303
Interest expense, net (143,470)
Impairment of investment (6,859)
Other income (expense), net (2,293)
Income tax benefit (expense) (32,918)
Net income 242,763
Net income attributable to non-controlling interest (15,155)
Net income available for common stock $ 227,608

Consolidating Income Statement
Year ended December 31, 2019 Electric Utilities Gas Utilities Corporate Inter-Company Eliminations Total
Revenue -
Contracts with customers $ 719,205 $ 1,007,187 $ — $ — $ 1,726,392
Other revenues 8,124 384 — — 8,508
727,329 1,007,571 — — 1,734,900
Inter-company operating revenue -
Contracts with customers 12,026 2,459 230 (14,715) —
Other revenues — — 343,974 (343,974) —
12,026 2,459 344,204 (358,689) —
Total revenue 739,355 1,010,030 344,204 (358,689) 1,734,900
Fuel, purchased power and cost of natural gas sold 145,972 425,898 269 (1,310) 570,829
Operations and maintenance, including taxes 259,167 301,844 286,800 (298,902) 548,909
Depreciation, depletion and amortization 116,539 92,317 22,065 (21,801) 209,120
Operating income (loss) 217,677 189,971 35,070 (36,676) 406,042
Interest expense, net (137,659)
Impairment of investment (19,741)
Other income (expense), net (5,740)
Income tax benefit (expense) (29,580)
Net income 213,322
Net income attributable to non-controlling interest (14,012)
Net income available for common stock $ 199,310

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(17) SUBSEQUENT EVENTS

Except as described ~~below and~~ in Note 2 3, there have been no events subsequent to December 31, ~~2021~~2023 which would require recognition in the ~~consolidated financial statements~~Consolidated Financial Statements or disclosures.

~~Winter Storm Uri~~

~~On January 27, 2022, Kansas Gas received approval from the KCC for their Winter Storm Uri cost recovery settlement with final rates to be implemented in 2022. See~~ ~~Note 2~~

~~for additional information.~~

101

~~Transmission Service Agreements~~

~~On January 1, 2022, Colorado Electric entered into a firm point-to-point transmission service agreement with Tri-State Generation and Transmission Association Inc. that provides a maximum~~Table of ~~58 MW of capacity and associated energy. This agreement expires December 31, 2024.~~Contents

On January 1, 2022, South Dakota Electric entered into a firm point-to-point transmission service agreement with MEAN that provides a maximum of 20 MW of capacity and associated energy. This agreement expires December 31, 2023.

ITEM 9.CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

None.

ITEM 9A.CONTROLS AND PROCEDURES

Disclosure Controls and Procedures

Our Chief Executive Officer and Chief Financial Officer evaluated the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) of the Securities Exchange Act of 1934 (Exchange Act)) as of December 31, ~~2021.~~2023. Based on their evaluation, they have concluded that our disclosure controls and procedures are effective.

Our disclosure controls and procedures are designed to ensure that information required to be disclosed by us in the reports that we file or submit under the Exchange Act, as amended, is recorded, processed, summarized and reported, within the time periods specified in the SEC’s rules and forms, and that such information is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

Changes in Internal Control over Financial Reporting

During the quarter ended December 31, ~~2021,~~2023, there were no changes in the Company’s internal control over financial reporting (as defined in Rule 13a-15(f) under the Exchange Act) that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

Management’s Report on Internal Control over Financial Reporting is presented on Page 56 of this Annual Report on Form 10-K.

ITEM 9B.OTHER INFORMATION

~~None.~~

None of our directors or officers

adopted

, modified, or terminated a Rule 10b5-1 trading arrangement or a non-Rule 10b5-1 trading arrangement during the three months ended December 31, 2023.

ITEM 9C. DISCLOSURE REGARDING FOREIGN JURISDICTIONS THAT PREVENT INSPECTIONS

None.

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PART III

ITEM 10.DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

Information required under this item with respect to directors and information required by Items 401, 405, 406, 407(c)(3), 407(d)(4), 407(d)(5) and ~~407(d)(5)~~408(b) of Regulation S-K, is set forth in the Proxy Statement for our ~~2022~~2024 Annual Meeting of Shareholders, which is incorporated herein by reference. Information about our Executive Officers is reported in Part 1 of this Annual Report on Form 10-K.

ITEM 11.EXECUTIVE COMPENSATION

Information required under this item is set forth in the Proxy Statement for our ~~2022~~2024 Annual Meeting of Shareholders, which is incorporated herein by reference.

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ITEM 12.SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS

Information regarding the security ownership of certain beneficial owners and management is set forth in the Proxy Statement for our ~~2022~~2024 Annual Meeting of Shareholders, which is incorporated herein by reference.

EQUITY COMPENSATION PLAN INFORMATION

The following table includes information as of December 31, 2023 with respect to our equity compensation plans which includes the Amended and Restated 2015 Omnibus Incentive Plan.


Plan category	Number of securities to be issued upon exercise of outstanding options, warrants and rights			Weighted-average exercise price of outstanding options, warrants and rights			Number of securities remaining available for future issuance under equity compensation plans (excluding securities reflected in column (a))
	(a)			(b)			(c)
Equity compensation plans approved by security holders	$	290,266	(1)	$	—	(1)	$	2,132,275	(2)
Equity compensation plans not approved by security holders		—			—			—
Total	$	290,266		$	—		$	2,132,275

(1)

290,266 full value awards outstanding as of December 31, 2023, comprised of restricted stock units, performance shares, short-term incentive plan (STIP) units and Director common stock units. In addition, 148,163 shares of unvested restricted stock were outstanding as of December 31, 2023, which are not included in the table above because they have already been issued. We do not have any outstanding options, warrants or rights.

(2)

Shares available for issuance are from the 2015 Amended and Restated Omnibus Incentive Plan. The 2015 Amended and Restated Omnibus Incentive Plan permits grant of stock options, stock appreciation rights, restricted stock, restricted stock units, performance shares, performance units, cash-based awards and other stock-based awards.

ITEM 13.CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS AND DIRECTOR INDEPENDENCE

Information regarding certain relationships and related transactions and director independence is set forth in the Proxy Statement for our ~~2022~~2024 Annual Meeting of Shareholders, which is incorporated herein by reference.

ITEM 14.PRINCIPAL ACCOUNTING FEES AND SERVICES

Information regarding principal accounting fees and services billed to us by our principal accountant, Deloitte & Touche LLP (PCAOB ID No. ~~34)~~34) is set forth in the Proxy Statement for our ~~2022~~2024 Annual Meeting to Shareholders, which is incorporated herein by reference.

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PART IV

ITEM 15.EXHIBITS, FINANCIAL STATEMENT SCHEDULES

(a)

~~(a)~~ Documents filed as part of this report

1. Consolidated Financial Statements

Financial statements required under this item are included in Item 8 of Part II

2. Schedules

All other schedules have been omitted because of the absence of the conditions under which they are required or because the required information is included in our consolidated financial statements and notes thereto. Consolidated valuation and qualifying accounts are detailed within Note 1 of the Notes to the Consolidated Financial Statements in this Annual Report on Form 10-K.

Exhibits

~~Exhibits~~

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 a board of director or management compensatory plan are designated by a cross (†).


Exhibit Number	Description

2.1	Purchase and Sale Agreement by and among Alinda Gas Delaware LLC, Alinda Infrastructure Fund I, L.P. and Aircraft Services Corporation, as Sellers, and Black Hills Utility Holdings, Inc., as Buyer, dated as of July 12, 2015 (filed as Exhibit 2.1 to the Registrant’s Form 8-K filed on July 14, 2015).

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2.2	First Amendment to Purchase and Sale Agreement effective December 10, 2015, by and among, Alinda Gas Delaware LLC, Alinda Infrastructure Fund I, L.P. and Aircraft Services Corporation, as Sellers, and Black Hills Utility Holdings, Inc., as Buyer (filed as Exhibit 2.2 to the Registrant’s Form 10-K for 2015).
2.3	Option Agreement, by and among, Aircraft Services Corporation, as ASC, SourceGas Holdings LLC, as the Company and Black Hills Utility Holdings, Inc., as Buyer (filed as Exhibit 2.2 to the Registrant’s Form 8-K filed on July 14, 2015).
3.1	Restated Articles of Incorporation of the Registrant (filed as Exhibit 3 to the Registrant’s Form 8-K filed on February 5, 2018).
3.2	Amended and Restated Bylaws of the Registrant dated April 24, ~~2017~~2023 (filed as Exhibit 33.2 to the Registrant’s Form 8-K filed on ~~April 28, 2017)~~May 3, 2023).
4.1	Indenture dated as of May 21, 2003 between the Registrant and Wells Fargo Bank, National Association (as successor to LaSalle Bank National Association), as Trustee (filed as Exhibit 4.1 to the Registrant’s Form 10-Q for the quarterly period ended June 30, 2003).
~~4.1.1~~4.1-1	First Supplemental Indenture dated as of May 21, 2003 (filed as Exhibit 4.2 to the Registrant’s Form 10-Q for the quarterly period ended June 30, 2003).
~~4.1.2~~4.1-2	Second Supplemental Indenture dated as of May 14, 2009 (filed as Exhibit 4 to the Registrant’s Form 8-K filed on May 14, 2009).
~~4.1.3~~4.1-3	Third Supplemental Indenture dated as of July 16, 2010 (filed as Exhibit 4 to Registrant’s Form 8-K filed on July 15, 2010).
~~4.1.4~~4.1-4	Fourth Supplemental Indenture dated as of November 19, 2013 (filed as Exhibit 4 to the Registrant’s Form 8-K filed on November 18, 2013).
~~4.1.5~~4.1-5	Fifth Supplemental Indenture dated as of January 13, 2016 (filed as Exhibit 4.1 to the Registrant’s Form 8-K filed on January 13, 2016).
~~4.1.6~~4.1-6	Sixth Supplemental Indenture dated as of August 19, 2016 (filed as Exhibit 4.1 to the Registrant’s Form 8-K filed on August 19, 2016).
~~4.1.7~~4.1-7	Seventh Supplemental Indenture dated as of August 17, 2018 (filed as Exhibit 4.2 to the Registrant’s Form 8-K filed on August 17, 2018).
~~4.1.8~~4.1-8	Eighth Supplemental Indenture dated as of October 3, 2019 (filed as Exhibit 4.1 to the Registrant’s Form 8-K filed on October 4, 2019).

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~~4.1.9~~4.1-9	Ninth Supplemental Indenture dated as of June 17, 2020 (filed as Exhibit 4.1 to the Registrant’s Form 8-K filed on June 17, 2020).
~~4.1.10~~4.1-10	Tenth Supplemental Indenture dated as of August 26, 2021 (filed as Exhibit 4.1 to the Registrant’s Form 8-K filed on August 26, 2021).
4.1-11	Eleventh Supplemental Indenture dated as of March 7, 2023 (filed as Exhibit 4.1 to the Registrant's Form 8-K filed on March 7, 2023).
4.1-12	Twelfth Supplemental Indenture dated as of September 15, 2023 (filed as Exhibit 4.1 to the Registrant's Form 8-K filed on September 15, 2023).
4.2	Restated and Amended Indenture of Mortgage and Deed of Trust of Black Hills Corporation (now called Black Hills Power, Inc.) dated as of September 1, 1999 (filed as Exhibit 4.19 to the Registrant’s Post-Effective Amendment No. 1 to the Registrant’s Registration Statement on Form S-3 (No. 333-150669)).
~~4.2.1~~4.2-1	First Supplemental Indenture, dated as of August 13, 2002, between Black Hills Power, Inc. and The Bank of New York Mellon (as successor to JPMorgan Chase Bank), as Trustee (filed as Exhibit 4.20 to the Registrant’s Post-Effective Amendment No. 1 to the Registrant’s Registration Statement on Form S‑3 (No. 333‑150669)).
~~4.2.2~~4.2-2	Second Supplemental Indenture, dated as of October 27, 2009, between Black Hills Power, Inc. and The Bank of New York Mellon (filed as Exhibit 4.21 to the Registrant’s Post-Effective Amendment No. 2 to the Registrant’s Registration Statement on Form S-3 (No. 333-150669)).
~~4.2.3~~4.2-3	Third Supplemental Indenture, dated as of October 1, 2014, between Black Hills Power, Inc. and The Bank of New York Mellon (filed as Exhibit 10.1 to the Registrant’s Form 8-K filed on October 2, 2014).
4.3	Restated Indenture of Mortgage, Deed of Trust, Security Agreement and Financing Statement, amended and restated as of November 20, 2007, between Cheyenne Light, Fuel and Power Company and Wells Fargo Bank, National Association (filed as Exhibit 10.2 to the Registrant’s Form 8-K filed on October 2, 2014).
~~4.3.1~~4.3-1	First Supplemental Indenture, dated as of September 3, 2009, between Cheyenne Light, Fuel and Power Company and Wells Fargo Bank, National Association (filed as Exhibit 10.3 to the Registrant’s Form 8-K filed on October 2, 2014).
~~4.3.2~~4.3-2	Second Supplemental Indenture, dated as of October 1, 2014, between Cheyenne Light, Fuel and Power Company and Wells Fargo Bank, National Association (filed as Exhibit 10.4 to the Registrant’s Form 8-K filed on October 2, 2014).
4.4	Form of Stock Certificate for Common Stock, Par Value $1.00 Per Share (filed as Exhibit 4.2 to the Registrant’s Form 10-K for 2000).

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4.5	Description of Securities (filed as Exhibit 4.5 to the Registrant's Form 10-K for 2019)
10.1†	Amended and Restated Pension Equalization Plan of Black Hills Corporation dated November 6, 2001 (filed as Exhibit 10.11 to the Registrant’s Form 10-K/A for 2001).
~~10.1.1†~~10.1-1†	First Amendment to Pension Equalization Plan (filed as Exhibit 10.10 to the Registrant’s Form 10-K for 2002).
~~10.1.2†~~10.1-2†	Grandfather Amendment to the Amended and Restated Pension Equalization Plan of Black Hills Corporation (filed as Exhibit 10.2 to the Registrant’s Form 10-K for 2008).
10.2†	~~2005 Pension Equalization Plan of Black Hills Corporation (filed as Exhibit 10.3 to the Registrant’s Form 10-K for 2008).~~
~~10.3†~~		Restoration Plan of Black Hills Corporation (filed as Exhibit 10.5 to the Registrant’s Form 10-K for 2008).
~~10.3.1†~~10.2-1†	First Amendment to the Restoration Plan of Black Hills Corporation dated July 24, 2011 (filed as Exhibit 10.2 to the Registrant’s Form 10-Q for the quarterly period ended June 30, 2011).
~~10.4†~~10.3†	Black Hills Corporation Non-qualified Deferred Compensation Plan as Amended and Restated effective January 1, 2011 (filed as Exhibit 10.4 to the Registrant’s Form 10-K for 2010).
~~10.4.1†~~10.3-1†	First Amendment to the Black Hills Corporation Nonqualified Deferred Compensation Plan as Amended and Restated effective January 1, 2011 (filed as Exhibit 10.5 to the Registrant’s Form 10-K for 2018).
~~10.5†~~10.4†	Black Hills Corporation Post-2018 Nonqualified Deferred Compensation Plan (filed as Exhibit ~~10.6~~10.4 to the ~~Registrant’s~~Registrant's Form 10-K for ~~2018)~~2022).
~~10.6†~~10.5†	Black Hills Corporation 2005 Omnibus Incentive Plan (”Omnibus Plan”) (filed as Appendix A to the Registrant’s Proxy Statement filed April 13, 2005).
~~10.6.1†~~10.5-1†	First Amendment to the Omnibus Plan (filed as Exhibit 10.11 to the Registrant’s Form 10-K for 2008).
~~10.6.2†~~10.5-2†	Second Amendment to the Omnibus Plan (filed as Exhibit 10 to the Registrant’s Form 8-K filed on May 26, 2010).
~~10.7*†~~10.6†	Black Hills Corporation Amended and Restated 2015 Omnibus Incentive Plan effective January ~~26, 2021~~24, 2023 (filed as Exhibit ~~10.7~~10.6 to the Registrant's Form 10-K for ~~2020)~~2022).

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~~10.8†~~10.7†	Form of Stock Option Agreement for Omnibus Plan effective for awards granted on or after January 1, 2014 (filed as Exhibit 10.7 to the Registrant’s Form 10-K for 2013).
~~10.9†~~10.8†	Form of Stock Option Agreement effective for awards granted on or after April 28, 2015 (filed as Exhibit 10.8 to Registrant’s Form 10-K for 2015).
~~10.10†~~10.9†	Form of Restricted Stock Award Agreement for 2015 Omnibus Incentive Plan effective for awards granted on or after April 28, 2015 (filed as Exhibit 10.10 to Registrant’s Form 10-K for 2015).
~~10.11*†~~10.10†	Form of Restricted Stock Award Agreement for 2015 Omnibus Incentive Plan effective for awards granted on or after January 26, 2021. (filed as Exhibit 10.11 to the Registrant's Form 10-K for 2020)
~~10.12†~~10.11†	Form of Restricted Stock Unit Award Agreement for 2015 Omnibus Plan effective for awards granted on or after April 28, 2015 (filed as Exhibit 10.12 to the Registrant’s Form 10-K for 2015).
~~10.13†~~10.12†	Form of Performance Share Award Agreement effective for awards granted on or after January 1, 2016 (filed as Exhibit 10.6 to the Registrant’s Form 10-Q for the quarterly period ended March 31, 2016).
~~10.14†~~10.13†	Form of Performance Share Award Agreement effective for awards granted on or after January 1, 2017 (filed as Exhibit 10.12 to the Registrant's Form 10-K for 2019).
~~10.15*†~~10.14†	Form of Short-term Incentive Plan for Officers Award Agreement effective for awards granted on or after January 1, 2021 (filed as Exhibit 10.16 to the Registrant's Form 10-K for 2020).
~~10.16*†~~10.15†	Form of Performance Unit Award Agreement for 2015 Omnibus Incentive Plan effective for awards granted on or after January 1, 2021. (filed as Exhibit 10.17 to the ~~Rigistrant's~~Registrant's Form 10-K for 2020)
~~10.17†~~10.16†	Form of Indemnification Agreement (filed as Exhibit 10.5 to the Registrant’s Form 8-K filed on September 3, 2004).
~~10.18†~~10.17†	Change in Control Agreement dated November 15, ~~2019~~2022 between Black Hills Corporation and Linden R. ~~Evans (filed as Exhibit 10.15 to the Registrant's Form 10-K for 2019).~~Evans.
~~10.19†~~10.18†	Change in Control Agreements dated November 15, 2022 between Black Hills Corporation and its non-CEO Senior Executive ~~Officers (filed as Exhibit 10.16 to the Registrant's Form 10-K for 2019).~~Officers.
~~10.20†~~10.19†	Outside Directors Stock Based Compensation Plan as Amended and Restated effective January 1, 2009 (filed as Exhibit 10.23 to the Registrant’s Form 10-K for 2008).

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~~10.20.1†~~10.19-1†	First Amendment to the Outside Directors Stock Based Compensation Plan effective January 1, 2011 (filed as Exhibit 10.16 to the Registrant’s Form 10-K for 2010).
~~10.20.2†~~10.19-2†	Second Amendment to the Outside Director’s Stock Based Compensation Plan effective January 1, 2013 (filed as Exhibit 10.15 to the Registrant’s Form 10-K for 2012).
~~10.20.3†~~10.19-3†	Third Amendment to the Outside Director’s Stock Based Compensation Plan effective January 1, 2015 (filed as Exhibit 10.16 to the Registrant’s Form 10-K for 2014).
~~10.20.4†~~10.19-4†	Fourth Amendment to the Outside Director’s Stock Based Compensation Plan effective January 1, 2017 (filed as Exhibit 10.4 to the Registrant’s Form 10-Q for the quarterly period ended September 30, 2016).
~~10.20.5†~~10.19-5†	Fifth Amendment to the Outside Director’s Stock Based Compensation Plan effective January 1, 2018 (filed as Exhibit 10.16 to the Registrant’s Form 10-K for 2017).
~~10.20.6†~~10.19-6†	Sixth Amendment to the Outside Director’s Stock Based Compensation Plan effective January 1, 2019 (filed as Exhibit 10.18 to the Registrant’s Form 10-K for 2018).
~~10.21†~~10.20†	Form of Non-Disclosure and Non-Solicitation Agreement for Certain Employees (filed as Exhibit 10.8 to the Registrant’s Form 10-Q for the quarterly period ended March 31, 2016).
~~10.22~~10.21	Equity Distribution Sales Agreement dated ~~August 4, 2020~~June 16, 2023 among Black Hills Corporation and the several Agents named therein (filed as Exhibit 1.1 to the Registrant’s Form 8-K filed on ~~August 4, 2020)~~June 20, 2023).
~~10.23~~10.22	Fourth Amended and Restated Credit Agreement dated as of July 19, 2021 (relating to $750 million Revolving Credit Facility), among Black Hills Corporation, as Borrower, the financial institutions party thereto, as Banks, and U.S. Bank, National Association, as Administrative Agent (filed as Exhibit 10.1 to the Registrant’s Form 8-K filed on July 19, 2021).
~~10.24~~10.22-1	First Amendment to Fourth Amended and Restated Credit Agreement dated as of ~~February 24, 2021~~May 9, 2023 (relating to $750 million Revolving Credit Facility), among Black Hills Corporation, as Borrower, the financial institutions party thereto, as Banks, and U.S. Bank, National Association, as Administrative Agent (filed as Exhibit 10.1 to the ~~Registrant’s~~Registrant's Form ~~8–K~~10-Q filed on ~~February 25, 2021)~~August 3, 2023).
~~10.25~~10.23†	Letter Agreement between Black Hills Corporation and Jennifer C. Landis (filed as Exhibit 10.1 to Form 10-Q filed May 4, 2023).
10.24†	Non-Employee Director Equity Compensation Plan effective January 1, ~~2022.~~2022 (filed as Exhibit 10.25 to the Registrant's Form 10-K filed on February 15, 2022).

106

Table of Contents


~~10.26~~10.25†	Form of Restricted Stock Unit Award Agreement (Non-Employee Director) effective for awards granted on or after January 1, 2022 (filed as Exhibit 10.26 to the Registrant's Form 10-K filed on February 15, 2022).
~~10.27~~10.26	Coal Leases between WRDC and the Federal Government -Dated May 1, 1959 (filed as Exhibit 5(i) to the Registrant’s Form S‑7, File No. 2‑60755) -Modified January 22, 1990 (filed as Exhibit 10(h) to the Registrant’s Form 10‑K for 1989) -Dated April 1, 1961 (filed as Exhibit 5(j) to the Registrant’s Form S‑7, File No. 2‑60755) -Modified January 22, 1990 (filed as Exhibit 10(i) to Registrant’s Form 10‑K for 1989) -Dated October 1, 1965 (filed as Exhibit 5(k) to the Registrant’s Form S‑7, File No. 2‑60755) -Modified January 22, 1990 (filed as Exhibit 10(j) to the Registrant’s Form 10‑K for 1989).
~~10.28~~10.27	Assignment of Mining Leases and Related Agreement effective May 27, 1997, between WRDC and Kerr-McGee Coal Corporation (filed as Exhibit 10(u) to the Registrant’s Form 10-K for 1997).
10.28†	Form of Restricted Stock Award Agreement for the Amended and Restated 2015 Omnibus Incentive Plan effective for awards granted on or after January 24, 2023 (filed as Exhibit 10.30 to the Registrant's Form 10-K for 2022).
10.29†	Form of Performance Unit Award Agreement for the Amended and Restated 2015 Omnibus Incentive Plan effective for awards granted on or after January 1, 2023 (filed as Exhibit 10.29 to the Registrant's Form 10-K for 2022).
10.30*†	Form of Short-term Incentive Plan Award Agreement for the Amended and Restated 2015 Omnibus Incentive Plan effective for awards granted on or after January 1, 2024.
10.31*†	Form of Performance Unit Award Agreement for the Amended and Restated 2015 Omnibus Incentive Plan effective for awards granted on or after January 1, 2024.
19*	Insider Trading Policy
21*	List of Subsidiaries of Black Hills Corporation.
23.1*	Consent of Independent Registered Public Accounting Firm.
31.1*	Certification of Chief Executive Officer pursuant to Rule 13a - 14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes - Oxley Act of 2002.
31.2*	Certification of Chief Financial Officer pursuant to Rule 13a - 14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes - Oxley Act of 2002.
32.1*	Certification of Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2*	Certification of Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
95*	Mine Safety and Health Administration Safety Data
97*†	Mandatory Compensation Recovery Policy dated December 1, 2023
101.INS*	Inline XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document
101.SCH*	Inline XBRL Taxonomy Extension Schema with Embedded Linkbases Document
101.CAL*	~~XBRL Taxonomy Extension Calculation Linkbase Document~~
101.DEF*		~~XBRL Taxonomy Extension Definition Linkbase Document~~
101.LAB*		~~XBRL Taxonomy Extension Label Linkbase Document~~

~~118~~

~~Table of Contents~~


101.PRE*			~~XBRL Taxonomy Extension Presentation Linkbase Document~~
104*			Cover Page Interactive Data File (formatted as ~~inline~~Inline XBRL and contained in Exhibit 101)

ITEM 16.FORM 10-K SUMMARY

None.

107

~~None.~~

~~119~~

Table of Contents

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.


		BLACK HILLS CORPORATION

		By:	/S/ LINDEN R. EVANS
		Linden R. Evans, President and Chief Executive Officer
Dated:	February ~~15, 2022~~14, 2024

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 dates indicated.


/S/ STEVEN R. MILLS	Director and	February ~~15, 2022~~14, 2024
Steven R. Mills	Chairman

/S/ LINDEN R. EVANS	Director and	February ~~15, 2022~~14, 2024
Linden R. Evans, President	Principal Executive Officer
and Chief Executive Officer

/S/ ~~RICHARD W. KINZLEY~~KIMBERLY F. NOONEY	Principal Financial and	February ~~15, 2022~~14, 2024
~~Richard W. Kinzley,~~Kimberly F. Nooney, Senior Vice President	Accounting Officer
and Chief Financial Officer

/S/ BARRY M. GRANGER	Director	February ~~15, 2022~~14, 2024
Barry M. Granger

/S/ TONY A. JENSEN	Director	February ~~15, 2022~~14, 2024
Tony A. Jensen

/S/ KATHLEEN S. MCALLISTER	Director	February ~~15, 2022~~14, 2024
Kathleen S. McAllister

/S/ ROBERT P. OTTO	Director	February ~~15, 2022~~14, 2024
Robert P. Otto

/S/ SCOTT M. PROCHAZKA	Director	February ~~15, 2022~~14, 2024
Scott M. Prochazka

/S/ REBECCA B. ROBERTS	Director	February ~~15, 2022~~14, 2024
Rebecca B. Roberts

/S/ MARK A. SCHOBER	Director	February ~~15, 2022~~14, 2024
Mark A. Schober

/S/ TERESA A. TAYLOR	Director	February ~~15, 2022~~14, 2024
Teresa A. Taylor

~~/S/ JOHN B. VERING~~			~~Director~~	~~February 15, 2022~~
~~John B. Vering~~

108

~~120~~


ITEM 8.		FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA	56
	Management’s Report on Internal Controls Over Financial Reporting	56
	Reports of Independent Registered Public Accounting Firm	57
	Consolidated Statements of Income	60
	Consolidated Statements of Comprehensive Income	61
	Consolidated Balance Sheets	62
	Consolidated Statements of Cash Flows	64
	Consolidated Statements of Equity	65
	Notes to Consolidated Financial Statements	66
	Note 1. Business Description and Significant Accounting Policies	66
	Note 2. Regulatory Matters	7574
	Note 3. Commitments, Contingencies and Guarantees	7976
	Note 4. Revenue	8479
	Note 5. Property, Plant and Equipment	8580
	Note 6. Jointly Owned Facilities	8681
	Note 7. Asset Retirement Obligations	8881
	Note 8. Financing 8 ~~. Financing~~	8882
	Note 9 .9. Risk Management and Derivatives	9285
	Note 10 .10. Fair Value Measurements	9588
	Note 11 .11. Other Comprehensive Income	9789
	Note 12 .12. Variable Interest Entity	9590
	Note 13 .13. Employee Benefit Plans	9890
	Note 14 .14. Share-based Compensation Plans	~~105~~95
	Note 15 .15. Income Taxes	~~107~~98
	Note 16 .16. Business Segment Information	~~111~~100
	Note 17. Subsequent Events	~~114~~101
ITEM 9.	CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE	~~114~~102
ITEM 9A.	CONTROLS AND PROCEDURES	~~114~~102
ITEM 9B.	OTHER INFORMATION	~~114~~102
ITEM 9C.	DISCLOSURE REGARDING FOREIGN JURISDICTIONS THAT PREVENT INSPECTIONS	~~114~~102
Part III
ITEM 10.	DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE	~~115~~102
ITEM 11.	EXECUTIVE COMPENSATION	~~115~~102
ITEM 12.	SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS	~~115~~103
ITEM 13.	CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS AND DIRECTOR INDEPENDENCE	~~115~~103
ITEM 14.	PRINCIPAL ACCOUNTANT FEES AND SERVICES	~~115~~103
Part IV
ITEM 15.	EXHIBITS, FINANCIAL STATEMENT SCHEDULES	~~115~~104
ITEM 16.	FORM 10-K SUMMARY	~~119~~107
SIGNATURES		~~120~~108


						Page
					~~Page~~
GLOSSARY OF TERMS AND ABBREVIATIONS					4
WEBSITE ACCESS TO REPORTS			911
FORWARD-LOOKING INFORMATION			911
Part I
ITEM 1.	BUSINESS		1012
	History and Organization		1012
	Electric Utilities		1012
	Gas Utilities		15
	Utility Regulation Characteristics		1817
	Environmental Matters		1821
	Human Capital Resources		1922
ITEM 1A.	RISK FACTORS		2124
ITEM 1B.	UNRESOLVED STAFF COMMENTS		2730
ITEM 2.1C.	~~PROPERTIES~~CYBERSECURITY			2730
ITEM 3.2.	~~LEGAL PROCEEDINGS~~PROPERTIES	27	31
ITEM 3.	LEGAL PROCEEDINGS		31
ITEM 4.	MINE SAFETY DISCLOSURES		2731
INFORMATION ABOUT OUR EXECUTIVE OFFICERS			2832
Part II
ITEM 5.	MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES		2933
ITEM 6.	RESERVED		3034
ITEM 7.	MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS		3034
	Executive Summary		3034
	Key Elements of our Business Strategy		3135
	Recent Developments		3438
	Results of Operations - Consolidated Summary and Overview		3640
	Non-GAAP Financial Measure		3740
	Electric Utilities		3841
	Gas Utilities		4243
	Corporate and Other		4446
	Consolidated Interest Expense, Impairment of Investment, Other Income (Expense) and Income Tax Benefit (Expense)		4546
	Liquidity and Capital Resources		4647
	Cash Flow Activities		4647
	Capital Resources		4749
	Credit Ratings		4950
	Capital Requirements		5051
	Critical Accounting Estimates		5152
ITEM 7A.	QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK		54


	System Peak Demand (in MW)
	2021		2020		2019
	Summer	Winter	Summer	Winter	Summer	Winter
Colorado Electric	407	279	401	297	422	297
South Dakota Electric	397	299	378	304	335	320
Wyoming Electric	274	246	271	246	265	247


	System Peak Demand (in MW)
	2023 (a)		2022				2021
	Summer	Winter	Summer		Winter		Summer		Winter
Colorado Electric	411	297		410		334		407		279
South Dakota Electric	378	289		403		355		397		299
Wyoming Electric	312	301		294		281		274		246


Unit	Fuel Type	Location	Ownership Interest % (d)	Owned Nameplate Capacity (MW)		In Service Date
Colorado Electric:
Busch Ranch I (a)	Wind	Pueblo, Colorado	50%		14.5	2012
Peak View (b) (c)	Wind	Pueblo, Colorado	100%		60.8	2016
Pueblo Airport Generation #1-2	Natural Gas	Pueblo, Colorado	100%		200.0	2011
Pueblo Airport Generation CT #6	Natural Gas	Pueblo, Colorado	100%		40.0	2016
AIP Diesel	Diesel Oil	Pueblo, Colorado	100%		10.0	2001
Diesel #1 and #3-5	Diesel Oil	Pueblo, Colorado	100%		8.0	1964
Diesel #1-5	Diesel Oil	Rocky Ford, Colorado	100%		10.0	1964
South Dakota Electric:
Cheyenne Prairie	Natural Gas	Cheyenne, Wyoming	58%		58.0	2014
Corriedale (c)	Wind	Cheyenne, Wyoming	62%		32.5	2020
Wygen III	Coal	Gillette, Wyoming	52%		60.3	2010
Neil Simpson II	Coal	Gillette, Wyoming	100%		90.0	1995
Wyodak Plant	Coal	Gillette, Wyoming	20%		80.5	1978
Neil Simpson CT	Natural Gas	Gillette, Wyoming	100%		40.0	2000
Lange CT	Natural Gas	Rapid City, South Dakota	100%		40.0	2002
Ben French Diesel #1-5	Diesel Oil	Rapid City, South Dakota	100%		10.0	1965
Ben French CTs #1-4	Natural Gas/Diesel Oil	Rapid City, South Dakota	100%		100.0	1977-1979
Wyoming Electric:
Cheyenne Prairie	Natural Gas	Cheyenne, Wyoming	42%		42.0	2014
Cheyenne Prairie CT	Natural Gas	Cheyenne, Wyoming	100%		40.0	2014
Corriedale (c)	Wind	Cheyenne, Wyoming	38%		20.0	2020
Wygen II	Coal	Gillette, Wyoming	100%		95.0	2008
Integrated Generation:
Wygen I	Coal	Gillette, Wyoming	76.5%		68.9	2003
Pueblo Airport Generation #4-5	Natural Gas	Pueblo, Colorado	50.1% (e)		200.0	2012
Busch Ranch I (a)	Wind	Pueblo, Colorado	50%		14.5	2012
Busch Ranch II (c)	Wind	Pueblo, Colorado	100%		59.4	2019
Total MW Capacity					1,394.4


Utility	State	Transmission (a) (in Line Miles)	Distribution (in Line Miles)
Colorado Electric	Colorado	598	3,157
South Dakota Electric (b)	South Dakota, Wyoming	1,192	2,566
Wyoming Electric	Wyoming	59	1,327
		1,849	7,050


State	Working Capacity (Mcf)	Cushion Gas (Mcf)	Total Capacity (Mcf)	Maximum Daily Withdrawal Capability (Mcfd)

Arkansas	9,273,700	12,318,040	21,591,740	196,000
Colorado	2,361,495	6,164,715	8,526,210	30,000
Wyoming	5,733,900	17,145,600	22,879,500	36,000
Total	17,369,095	35,628,355	52,997,450	262,000


Our Team	As of December 31, 2021	As of December 31, 2020
Total employees	2,884	3,011
Women in executive leadership positions (a)	30%	31%
Gender diversity (women as a % of total employees)	26%	26%
Represented by a union	25%	25%
Military veterans	14%	16%
Ethnic diversity (non-white employees as a % of total)	12%	11%

	For the year ended December 31, 2021	For the year ended December 31, 2020
Number of external hires	214	299
External hires gender diversity (as a % of total external hires)	25%	29%
External hires ethnic diversity (as a % of total external hires)	20%	16%
Turnover rate (b)	11%	8%
Retirement rate	3%	3%


	Years ended December 31,
	2016		2017		2018		2019		2020		2021
Black Hills Corporation	$	100.00	$	100.77	$	108.81	$	139.91	$	113.21	$	134.59
S&P 500	100.00		121.83		116.49		153.17		181.35		233.41
S&P 500 Utilities	100.00		112.11		116.71		147.46		148.18		174.36
Performance Peer Group (a)	100.00		113.59		119.17		143.70		123.74		140.78



Period	Total Number of Shares Purchased (a)	Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	Maximum Number (or Approximate Dollar Value) of Shares That May Yet Be Purchased Under the Plans or Programs









October 1, 2021 - October 31, 2021	1	$	63.15	—	—
November 1, 2021 - November 30, 2021	777	66.10		—	—
December 1, 2021 - December 31, 2021	8,680	68.40		—	—
Total	9,458	$	68.21	—	—


	Actual (a)		Forecasted
Capital Expenditures By Segment :	2021		2022		2023		2024		2025		2026
(in millions)
Electric Utilities	$	286	$	239	$	205	$	285	$	231	$	155
Gas Utilities	383		363		383		386		349		346
Corporate and Other	11		9		12		13		13		13
Incremental projects (b)	—		—		—		—		60		140
Total	$	680	$	611	$	600	$	684	$	653	$	654


	2021		2020		2021 vs 2020 Variance		2019		2020 vs 2019 Variance

Revenue:
Electric - regulated	$	800,747	$	699,712	$	101,035	$	698,807	$	905
Other - non-regulated	41,511		39,145		2,366		40,548		(1,403)
Total revenue	842,258		738,857		103,401		739,355		(498)

Fuel and Purchased Power:
Electric - regulated	244,504		136,374		108,130		143,668		(7,294)
Other - non-regulated	3,514		2,198		1,316		2,305		(107)
Total fuel and purchased power	248,018		138,572		109,446		145,973		(7,401)

Electric Utility margin (non-GAAP)	594,240		600,285		(6,045)		593,382		6,903

Operations and maintenance	260,036		265,679		(5,643)		259,167		6,512
Depreciation and amortization	131,528		123,632		7,896		116,538		7,094
Total operating expenses	391,564		389,311		2,253		375,705		13,606

Operating income	$	202,676	$	210,974	$	(8,298)	$	217,677	$	(6,703)


	Revenue (in thousands)						Quantities Sold (MWh)
For the year ended December 31,	2021		2020		2019		2021	2020	2019

Residential	$	244,589	$	221,530	$	216,108	1,494,028	1,477,515	1,440,551
Commercial	275,998		239,166		246,704		2,075,690	1,974,043	2,055,253
Industrial	149,040		131,154		131,831		1,751,344	1,794,795	1,787,412
Municipal	19,092		16,860		17,206		162,903	158,222	157,298
Subtotal Retail Revenue - Electric	688,719		608,710		611,849		5,483,965	5,404,575	5,440,514
Contract Wholesale	16,128		17,847		19,078		574,137	492,637	368,360
Off-system/Power Marketing Wholesale	41,682		15,511		17,886		638,923	437,288	507,042
Other (a)	54,218		57,644		49,994		—	—	—
Total Regulated	800,747		699,712		698,807		6,697,025	6,334,500	6,315,916
Non-Regulated (b)	41,511		39,145		40,548		269,558	258,399	238,415
Total Revenue and Quantities Sold	842,258		738,857		739,355		6,966,583	6,592,899	6,554,331
Other Uses, Losses or Generation, net (c)							475,280	406,422	393,573
Total Energy							7,441,863	6,999,321	6,947,904


	Electric Revenue (in thousands)						Quantities Sold (MWh)
For the year ended December 31,	2021		2020		2019			2021	2020	2019
Colorado Electric	$	302,896	$	252,094	$	246,197		2,574,016	2,243,034	2,046,728
South Dakota Electric	319,362		280,431		288,120			2,389,407	2,363,776	2,519,448
Wyoming Electric	180,413		169,179		167,345			1,733,602	1,727,690	1,749,740
Integrated Generation	39,587		37,153		37,693			269,558	258,399	238,415
Total Revenue and Quantities Sold	$	842,258	$	738,857	$	739,355		6,966,583	6,592,899	6,554,331


	For the year ended December 31,
Quantities Generated and Purchased (MWh)	2021	2020	2019
Generated:
Colorado Electric	412,127	265,552	443,770
South Dakota Electric	1,980,660	1,901,009	1,768,456
Wyoming Electric	883,596	851,522	852,803
Integrated Generation	1,842,377	2,085,042	1,660,412
Total Generated	5,118,760	5,103,125	4,725,441

Purchased:
Colorado Electric	1,027,728	714,139	741,666
South Dakota Electric	563,603	489,457	896,901
Wyoming Electric	643,857	610,075	509,697
Integrated Generation	87,915	82,525	74,199
Total Purchased	2,323,103	1,896,196	2,222,463

Total Generated and Purchased	7,441,863	6,999,321	6,947,904


	Revenue (in thousands)						Quantities Sold and Transported (Dth)
	For the year ended December 31,						For the year ended December 31,
	2021		2020		2019			2021	2020	2019

Residential	$	613,475	$	527,518	$	551,701		60,080,805	61,962,171	66,956,080
Commercial	242,115		193,017		212,229			29,091,657	28,784,319	32,241,441
Industrial	33,368		24,014		24,832			6,260,235	6,881,354	6,548,023
Other	3,816		582		(1,361)			—	—	—
Total Distribution	892,774		745,131		787,401			95,432,697	97,627,844	105,745,544

Transportation and Transmission	158,836		155,506		144,710			154,570,280	149,062,476	153,101,264

Total Regulated	1,051,610		900,637		932,111			250,002,977	246,690,320	258,846,808

Non-regulated Services (a)	73,255		74,033		77,919			—	—	—

Total Revenue and Quantities Sold	$	1,124,865	$	974,670	$	1,010,030		250,002,977	246,690,320	258,846,808


(in thousands)	2021		2020		2021 vs 2020 Variance		2019		2020 vs 2019 Variance

Operating income (loss)	$	(4,404)	$	1,440	$	(5,844)	$	(1,606)	$	3,046


Financial Position Summary	2021			2020
Cash and cash equivalents	$	8,921		$	6,356
Restricted cash and equivalents	$	4,889		$	4,383
Notes payable	$	420,180		$	234,040
Current maturities of long-term debt	$	—		$	8,436
Long-term debt (a)	$	4,126,923		$	3,528,100
Stockholders’ equity	$	2,787,094		$	2,561,385

Ratios
Long-term debt ratio	60		%	58		%
Total debt ratio	62		%	60		%


		Current		Short-term borrowings at		Letters of Credit (a) at		Available Capacity at
Credit Facility	Expiration	Capacity		December 31, 2021		December 31, 2021		December 31, 2021
Revolving Credit Facility and CP Program	July 19, 2026	$	750	$	420	$	27	$	303


Year ended	December 31, 2021		December 31, 2020		December 31, 2019
	(in thousands, except per share amounts)

Revenue	$	1,949,102	$	1,696,941	$	1,734,900

Operating expenses:
Fuel, purchased power and cost of natural gas sold	741,934		492,404		570,829
Operations and maintenance	501,690		495,404		495,994
Depreciation, depletion and amortization	235,953		224,457		209,120
Taxes - property and production	60,096		56,373		52,915
Total operating expenses	1,539,673		1,268,638		1,328,858

Operating income	409,429		428,303		406,042

Other income (expense):
Interest expense incurred net of amounts capitalized (including amortization of debt issuance costs, premiums and discounts)	(154,112)		(144,931)		(139,291)
Interest income	1,708		1,461		1,632
Impairment of investment	—		(6,859)		(19,741)
Other income (expense), net	1,404		(2,293)		(5,740)
Total other income (expense)	(151,000)		(152,622)		(163,140)
Income before income taxes	258,429		275,681		242,902
Income tax (expense)	(7,169)		(32,918)		(29,580)
Net income	251,260		242,763		213,322
Net income attributable to non-controlling interest	(14,516)		(15,155)		(14,012)
Net income available for common stock	$	236,744	$	227,608	$	199,310

Earnings per share of common stock:
Earnings per share, Basic	$	3.74	$	3.65	$	3.29
Earnings per share, Diluted	$	3.74	$	3.65	$	3.28

Weighted average common shares outstanding:
Basic	63,219		62,378		60,662
Diluted	63,325		62,439		60,798


	Common Stock			Treasury Stock
(in thousands except share amounts)	Shares	Value		Shares	Value		Additional Paid in Capital		Retained Earnings		AOCI		Non controlling Interest		Total
Balance at December 31, 2018	60,048,567	$	60,049	44,253	$	(2,510)	$	1,450,569	$	700,396	$	(26,916)	$	105,835	$	2,287,423
Net income	—	—		—	—		—		199,310		—		14,012		213,322
Other comprehensive (loss), net of tax	—	—		—	—		—		—		(3,739)		—		(3,739)


Dividends on common stock ($2.05 per share)	—	—		—	—		—		(124,647)		—		—		(124,647)
Share-based compensation	103,759	104		(40,297)	2,243		4,729		—		—		—		7,076

Issuance of common stock	1,328,332	1,328		—	—		98,672		—		—		—		100,000
Issuance costs	—	—		—	—		(1,182)		—		—		—		(1,182)

Other	—	—		—	—		—		327		—		—		327
Implementation of ASU 2016-02 Leases	—	—		—	—		—		3,390		—		—		3,390
Distributions to non-controlling interest	—	—		—	—		—		—		—		(17,901)		(17,901)
Balance at December 31, 2019	61,480,658	$	61,481	3,956	$	(267)	$	1,552,788	$	778,776	$	(30,655)	$	101,946	$	2,464,069
Net income	—	—		—	—		—		227,608		—		15,155		242,763
Other comprehensive income, net of tax	—	—		—	—		—		—		3,309		—		3,309
Dividends on common stock ($2.17 per share)	—	—		—	—		—		(135,439)		—		—		(135,439)
Share-based compensation	123,578	123		28,536	(1,852)		6,923		—		—		—		5,194

Issuance of common stock	1,222,943	1,223		—	—		98,777		—		—		—		100,000
Issuance costs	—	—		—	—		(1,203)		—		—		—		(1,203)

Implementation of ASU 2016-13 Financial Instruments - - Credit Losses	—	—		—	—		—		(207)		—		—		(207)

Distributions to non-controlling interest	—	—		—	—		—		—		—		(15,839)		(15,839)
Balance at December 31, 2020	62,827,179	$	62,827	32,492	$	(2,119)	$	1,657,285	$	870,738	$	(27,346)	$	101,262	$	2,662,647
Net income	—	—		—	—		—		236,744		—		14,516		251,260
Other comprehensive income, net of tax	—	—		—	—		—		—		7,262		—		7,262
Dividends on common stock ($2.29 per share)	—	—		—	—		—		(145,023)		—		—		(145,023)
Share-based compensation	153,719	154		21,586	(1,390)		9,256		—		—		—		8,020

Issuance of common stock	1,812,197	1,812		—	—		118,112		—		—		—		119,924
Issuance costs	—	—		—	—		(1,217)		—		—		—		(1,217)
Other	—	—		—	—		—		(1)		—		—		(1)
Distributions to non-controlling interest	—	—		—	—		—		—		—		(15,749)		(15,749)
Balance at December 31, 2021	64,793,095	$	64,793	54,078	$	(3,509)	$	1,783,436	$	962,458	$	(20,084)	$	100,029	$	2,887,123


	Balance at Beginning of Year		Additions Charged to Costs and Expenses			Recoveries and Other Additions		Write-offs and Other Deductions		Balance at End of Year
2021	$	7,003	$	2,444	(a)	$	3,560	$	(10,894)	$	2,113
2020	$	2,444	$	8,927	(a)	$	4,728	$	(9,096)	$	7,003
2019	$	3,209	$	5,795		$	3,942	$	(10,502)	$	2,444


	2021		2020
Investment in privately held oil and gas company	$	1,500	$	1,500
Cash surrender value of life insurance contracts	12,365		13,628
Other investments	1,616		682
Total investments	$	15,481	$	15,810


Subsidiary	Contract Type	Counterparty	Fuel Type	2021		2020		2019
Colorado Electric	PPA	PRPA	Wind	$	4,246	$	2,791	$	—
Colorado Electric	PPA	PRPA	Coal	$	4,447	$	4,524	$	1,802
South Dakota Electric	PPA	PacifiCorp	Coal	$	8,923	$	5,897	$	7,477
South Dakota Electric	Transmission Services Agreement	PacifiCorp	N/A	$	1,783	$	1,776	$	1,741
South Dakota Electric	PPA	PRPA	Wind	$	596	$	715	$	688
Wyoming Electric	PPA	Happy Jack	Wind	$	3,544	$	4,531	$	3,936
Wyoming Electric	PPA	Silver Sage	Wind	$	4,717	$	6,203	$	5,366


	Power purchase and transmission services agreements (a)		Natural gas transportation and storage agreements
2022	$	23,985	$	143,750
2023	$	11,678	$	119,923
2024	$	2,738	$	82,428
2025	$	—	$	58,669
2026	$	—	$	36,503
Thereafter	$	—	$	60,429


Contract Years	Total Contract Capacity		Contingent Capacity Amounts on Wygen III		Contingent Capacity Amounts on Neil Simpson II

2020-2022	15	MW	7	MW	8	MW
2022-2023	15	MW	8	MW	7	MW
2023-2028	10	MW	5	MW	5	MW


	Operating Leases
2022	$	2,173
2023	2,204
2024	2,125
2025	2,070
2026	1,881
Thereafter	51,233
Total lease receivables	$	61,686


Year ended December 31, 2020	Electric Utilities		Gas Utilities		Inter-company Revenues		Total
Customer types:	(in thousands)
Retail	$	636,902	$	765,922	$	—	$	1,402,824
Transportation	—		154,581		(526)		154,055
Wholesale	24,845		—		—		24,845
Market - off-system sales	15,512		260		—		15,772
Transmission/Other	55,422		43,658		(15,772)		83,308
Revenue from contracts with customers	732,681		964,421		(16,298)		1,680,804
Other revenues	6,176		10,249		(288)		16,137
Total revenues	$	738,857	$	974,670	$	(16,586)	$	1,696,941

Timing of revenue recognition:
Services transferred at a point in time	$	27,089	$	—	$	—	$	27,089
Services transferred over time	705,592		964,421		(16,298)		1,653,715
Revenue from contracts with customers	$	732,681	$	964,421	$	(16,298)	$	1,680,804


Year ended December 31, 2019	Electric Utilities		Gas Utilities		Inter-company Revenues		Total
Customer types:	(in thousands)
Retail	$	632,936	$	817,840	$	—	$	1,450,776
Transportation	—		143,390		(1,042)		142,348
Wholesale	28,464		—		—		28,464
Market - off-system sales	16,081		691		—		16,772
Transmission/Other	53,750		47,725		(13,443)		88,032
Revenue from contracts with customers	731,231		1,009,646		(14,485)		1,726,392
Other revenues	8,124		384		—		8,508
Total revenues	$	739,355	$	1,010,030	$	(14,485)	$	1,734,900

Timing of revenue recognition:
Services transferred at a point in time	$	27,180	$	—	$	—	$	27,180
Services transferred over time	704,051		1,009,646		(14,485)		1,699,212
Revenue from contracts with customers	$	731,231	$	1,009,646	$	(14,485)	$	1,726,392


	December 31, 2021				December 31, 2020
	Balance Outstanding		Letters of Credit (a)		Balance Outstanding		Letters of Credit (a)
Revolving Credit Facility	$	—	$	27,209	$	—	$	24,730
CP Program	420,180		—		234,040		—
Total	$	420,180	$	27,209	$	234,040	$	24,730


		Interest Rate at	Balance Outstanding
	Due Date	December 31, 2023	December 31, 2023			December 31, 2022
Corporate
Senior unsecured notes due 2023	November 30, 2023	N/A	$	—		$	525.0
Senior unsecured notes due 2024	August 23, 2024	1.04%		600.0			600.0
Senior unsecured notes due 2026	January 15, 2026	3.95%		300.0			300.0
Senior unsecured notes due 2027	January 15, 2027	3.15%		400.0			400.0
Senior unsecured notes due 2028	March 15, 2028	5.95%		350.0			—
Senior unsecured notes, due 2029	October 15, 2029	3.05%		400.0			400.0
Senior unsecured notes, due 2030	June 15, 2030	2.50%		400.0			400.0
Senior unsecured notes due 2033	May 1, 2033	4.35%		400.0			400.0
Senior unsecured notes due 2034	May 15, 2034	6.15%		450.0			—
Senior unsecured notes, due 2046	September 15, 2046	4.20%		300.0			300.0
Senior unsecured notes, due 2049	October 15, 2049	3.88%		300.0			300.0
Total Corporate debt				3,900.0			3,625.0
Less unamortized debt discount				(8.9	)		(5.3	)
Total Corporate debt, net				3,891.1			3,619.7

South Dakota Electric
First Mortgage Bonds due 2032	August 15, 2032	7.23%		75.0			75.0
First Mortgage Bonds due 2039	November 1, 2039	6.13%		180.0			180.0
First Mortgage Bonds due 2044	October 20, 2044	4.43%		85.0			85.0
Total South Dakota Electric debt				340.0			340.0
Less unamortized debt discount				(0.1	)		(0.1	)
Total South Dakota Electric debt, net				339.9			339.9

Wyoming Electric
Industrial development revenue bonds due 2027(a) (b)	March 1, 2027	3.93%		10.0			10.0
First Mortgage Bonds due 2037	November 20, 2037	6.67%		110.0			110.0
First Mortgage Bonds due 2044	October 20, 2044	4.53%		75.0			75.0
Total Wyoming Electric debt				195.0			195.0
Less unamortized debt discount				—			—
Total Wyoming Electric debt, net				195.0			195.0

Total long-term debt				4,426.0			4,154.6
Less current maturities				(600.0	)		(525.0	)
Less unamortized deferred financing costs (c)				(24.8	)		(22.3	)
Long-term debt, net of current maturities and deferred financing costs			$	3,801.2		$	3,607.3