UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C.  20549
FORM 10-Q
(Mark One)
QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended June 30, 20222023
or
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from to
Commission File Number: 001-03140
Northern States Power Company
(Exact Name of Registrant as Specified in its Charter)
Wisconsin39-0508315
(State or Other Jurisdiction of Incorporation or Organization)(I.R.S Employer Identification No.)
1414 West Hamilton AvenueEau ClaireWisconsin54701
(Address of Principal Executive Offices)(Zip Code)
(715)737-2625
(Registrant’s Telephone Number, Including Area Code)

Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading Symbol(s)Name of each exchange on which registered
N/AN/AN/A

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.  Yes   No
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).  Yes   No
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.
Large accelerated filerAccelerated filer
Non-accelerated filerSmaller reporting company
Emerging growth company
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes No
Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.
ClassOutstanding at July 28, 202227, 2023
Common Stock, $100 par value933,000 shares
Northern States Power Company meets the conditions set forth in General Instructions H(1)(a) and (b) of Form 10-Q and is therefore filing this Form 10-Q with the reduced disclosure format specified in General Instruction H(2) to such Form 10-Q.



TABLE OF CONTENTS
PART IFINANCIAL INFORMATION
Item 1 —
Item 2 —
Item 4 —
   
PART IIOTHER INFORMATION 
Item 1 —
Item 1A —
Item 5 —
Item 6 —
   
This Form 10-Q is filed by NSP-Wisconsin. NSP-Wisconsin is a wholly owned subsidiary of Xcel Energy Inc. Additional information on Xcel Energy is available in various filings with the SEC. This report should be read in its entirety.



Definitions of Abbreviations
Xcel Energy Inc.’s Subsidiaries and Affiliates (current and former)
e primee prime inc.
NSP-MinnesotaNorthern States Power Company, a Minnesota corporation
NSP SystemThe electric production and transmission system of NSP-Minnesota and NSP-Wisconsin operated on an integrated basis and managed by NSP-Minnesota
NSP-WisconsinNorthern States Power Company, a Wisconsin corporation
PSCoPublic Service Company of Colorado
SPSSouthwestern Public Service Company
Utility subsidiariesNSP-Minnesota, NSP-Wisconsin, PSCo and SPS
Xcel EnergyXcel Energy Inc. and its subsidiaries
Federal and State Regulatory Agencies
D.C. CircuitUnited States Court of Appeals for the District of Columbia Circuit
EPAUnited States Environmental Protection Agency
FERCFederal Energy Regulatory Commission
PSCWPublic Service Commission of Wisconsin
SECSecurities and Exchange Commission
Other
ACEAffordable Clean Energy
C&ICommercial and Industrial
CEOChief executive officer
CERCLAComprehensive Environmental Response, Compensation, and Liability Act
CFOChief financial officer
CPPClean Power Plan
CSPVCrystalline Silicon Photovoltaic
GAAPUnited States generally accepted accounting principles
MGPManufactured gas plant
MISOMidcontinent Independent System Operator, Inc.
NOxNitrogen Oxides
PFASPer- and Polyfluoroalkyl Substances
O&MOperating and maintenance
ROEReturn on equity
TOsTransmission owners
Measurements
MWMegawatts
Forward-Looking Statements
Except for the historical statements contained in this report, the matters discussed herein are forward-looking statements that are subject to certain risks, uncertainties and assumptions. Such forward-looking statements, including those relating to future sales, future expenses, future tax rates, future operating performance, estimated base capital expenditures and financing plans, projected capital additions and forecasted annual revenue requirements with respect to rider filings, expected rate increases to customers, expectations and intentions regarding regulatory proceedings, and expected impact on our results of operations, financial condition and cash flows of resettlement calculations and credit losses relating to certain energy transactions, as well as assumptions and other statements are intended to be identified in this document by the words “anticipate,” “believe,” “could,” “estimate,” “expect,” “intend,” “may,” “objective,” “outlook,” “plan,” “project,” “possible,” “potential,” “should,” “will,” “would” and similar expressions. Actual results may vary materially. Forward-looking statements speak only as of the date they are made, and we expressly disclaim any obligation to update any forward-looking information. The following factors, in addition to those discussed in NSP-Wisconsin's Annual Report on Form 10-K for the fiscal year ended Dec. 31, 20212022, and subsequent filings with the SEC, could cause actual results to differ materially from management expectations as suggested by such forward-looking information: uncertainty around the impacts and duration of the COVID-19 pandemic, including potential workforce impacts resulting from vaccination requirements, quarantine policies or government restrictions, and sales volatility; operational safety; successful long-term operational planning; commodity risks associated with energy markets and production; rising energy prices and fuel costs; qualified employee work force and third-party contractor factors; violations of our Codes of Conduct; our ability to recover costs; changes in regulation; reductions in our credit ratings and the cost of maintaining certain contractual relationships; general economic conditions, including recessionary conditions, inflation rates, monetary fluctuations, supply chain constraints and their impact on capital expenditures and/or the ability of NSP-Wisconsin and its subsidiaries to obtain financing on favorable terms; availability or cost of capital; our customers’ and counterparties’ ability to pay their debts to us; assumptions and costs relating to funding our employee benefit plans and health care benefits; tax laws; uncertainty regarding epidemics, the duration and magnitude of business restrictions including shutdowns (domestically and globally), the potential impact on the workforce, including shortages of employees or third-party contractors due to quarantine policies, vaccination requirements or government restrictions, impacts on the transportation of goods and the generalized impact on the economy; effects of geopolitical events, including war and acts of terrorism; cyber security threats and data security breaches; seasonal weather patterns; changes in environmental laws and regulations; climate change and other weather;weather events; natural disaster and resource depletion, including compliance with any accompanying legislative and regulatory changes andchanges; costs of potential regulatory penalties;penalties and wildfire damages in excess of liability insurance coverage; regulatory changes and/or limitations related to the use of natural gas as an energy source.source; challenging labor market conditions and our ability to attract and retain a qualified workforce; and our ability to execute on our strategies or achieve expectations related to environmental, social and governance matters including as a result of evolving legal, regulatory and other standards, processes, and assumptions, the pace of scientific and technological developments, increased costs, the availability of requisite financing, and changes in carbon markets.


Table of Contents

PART I — FINANCIAL INFORMATION
ITEM 1 — FINANCIAL STATEMENTS
NSP-WISCONSIN AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)
(amounts in millions)
Three Months Ended June 30Six Months Ended June 30 Three Months Ended June 30Six Months Ended June 30
2022202120222021 2023202220232022
Operating revenuesOperating revenues  Operating revenues  
Electric, non-affiliatesElectric, non-affiliates$191 $178 $394 $356 Electric, non-affiliates$185 $191 $389 $394 
Electric, affiliatesElectric, affiliates52 46 99 92 Electric, affiliates51 52 101 99 
Natural gasNatural gas35 31 113 88 Natural gas24 35 101 113 
Total operating revenuesTotal operating revenues278 255 606 536 Total operating revenues260 278 591 606 
Operating expensesOperating expenses Operating expenses 
Electric fuel and purchased power, non-affiliatesElectric fuel and purchased power, non-affiliates10 Electric fuel and purchased power, non-affiliates
Purchased power, affiliatesPurchased power, affiliates120 106 228 206 Purchased power, affiliates93 120 196 228 
Cost of natural gas sold and transportedCost of natural gas sold and transported20 20 65 51 Cost of natural gas sold and transported20 55 65 
O&M expenses54 50 107 99 
Operating and maintenance expensesOperating and maintenance expenses57 54 115 107 
Conservation program expensesConservation program expensesConservation program expenses
Depreciation and amortizationDepreciation and amortization40 36 78 73 Depreciation and amortization42 40 83 78 
Taxes (other than income taxes)Taxes (other than income taxes)15 15 Taxes (other than income taxes)17 15 
Total operating expensesTotal operating expenses248 228 507 460 Total operating expenses217 248 480 507 
Operating incomeOperating income30 27 99 76 Operating income43 30 111 99 
Other expense, net(1)— (1)— 
Other income (expense), netOther income (expense), net(1)(1)
Allowance for funds used during construction — equityAllowance for funds used during construction — equityAllowance for funds used during construction — equity
Interest charges and financing costsInterest charges and financing costsInterest charges and financing costs
Interest charges, includes other financing costs of $1, $—, $1 and $—, respectively11 12 22 21 
Interest charges and other financing costsInterest charges and other financing costs13 11 26 22 
Allowance for funds used during construction — debtAllowance for funds used during construction — debt— (1)(1)(1)Allowance for funds used during construction — debt(1)— (2)(1)
Total interest charges and financing costsTotal interest charges and financing costs11 11 21 20 Total interest charges and financing costs12 11 24 21 
Income before income taxesIncome before income taxes19 17 80 58 Income before income taxes34 19 92 80 
Income tax expenseIncome tax expense18 12 Income tax expense21 18 
Net incomeNet income$15 $14 $62 $46 Net income$26 $15 $71 $62 

See Notes to Consolidated Financial Statements

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NSP-WISCONSIN AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)
(amounts in millions)
Six Months Ended June 30 Six Months Ended June 30
20222021 20232022
Operating activitiesOperating activities  Operating activities  
Net incomeNet income$62 $46 Net income$71 $62 
Adjustments to reconcile net income to cash provided by operating activities:Adjustments to reconcile net income to cash provided by operating activities:Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortizationDepreciation and amortization78 73 Depreciation and amortization84 78 
Deferred income taxesDeferred income taxes(1)10 Deferred income taxes(6)(1)
Allowance for equity funds used during constructionAllowance for equity funds used during construction(3)(2)Allowance for equity funds used during construction(4)(3)
Provision for bad debtsProvision for bad debtsProvision for bad debts
Changes in operating assets and liabilities:Changes in operating assets and liabilities:Changes in operating assets and liabilities:
Accounts receivableAccounts receivable10 Accounts receivable
Accrued unbilled revenuesAccrued unbilled revenues18 Accrued unbilled revenues24 18 
InventoriesInventories(4)(1)Inventories10 (4)
Other current assetsOther current assets(8)(6)Other current assets(8)
Accounts payableAccounts payableAccounts payable(17)
Net regulatory assets and liabilitiesNet regulatory assets and liabilities(47)Net regulatory assets and liabilities38 
Other current liabilitiesOther current liabilities(2)Other current liabilities(2)
Pension and other employee benefit obligationsPension and other employee benefit obligations(1)(5)Pension and other employee benefit obligations(2)(1)
Other, netOther, net(2)Other, net(2)
Net cash provided by operating activitiesNet cash provided by operating activities158 94 Net cash provided by operating activities212 158 
Investing activitiesInvesting activitiesInvesting activities
Capital/construction expendituresCapital/construction expenditures(155)(111)Capital/construction expenditures(209)(155)
Net cash used in investing activitiesNet cash used in investing activities(155)(111)Net cash used in investing activities(209)(155)
Financing activitiesFinancing activitiesFinancing activities
(Repayments of) proceeds from short-term borrowings, net(83)(19)
Repayments of short-term borrowings, netRepayments of short-term borrowings, net(47)(83)
Borrowings under utility money pool arrangementBorrowings under utility money pool arrangement471 186 Borrowings under utility money pool arrangement73 471 
Repayments under utility money pool arrangementRepayments under utility money pool arrangement(404)(153)Repayments under utility money pool arrangement(73)(404)
Proceeds from long-term debtProceeds from long-term debt124 — 
Capital contributions from parentCapital contributions from parent51 40 Capital contributions from parent46 51 
Dividends paid to parentDividends paid to parent(48)(38)Dividends paid to parent(47)(48)
Other, net— 
Net cash (used in) provided by financing activities(13)17 
Net cash provided by (used in) financing activitiesNet cash provided by (used in) financing activities76 (13)
Net change in cash, cash equivalents and restricted cashNet change in cash, cash equivalents and restricted cash(10)— Net change in cash, cash equivalents and restricted cash79 (10)
Cash, cash equivalents and restricted cash at beginning of periodCash, cash equivalents and restricted cash at beginning of period11 Cash, cash equivalents and restricted cash at beginning of period11 
Cash, cash equivalents and restricted cash at end of periodCash, cash equivalents and restricted cash at end of period$$Cash, cash equivalents and restricted cash at end of period$81 $
Supplemental disclosure of cash flow information:Supplemental disclosure of cash flow information:Supplemental disclosure of cash flow information:
Cash paid for interest (net of amounts capitalized)Cash paid for interest (net of amounts capitalized)$(20)$(19)Cash paid for interest (net of amounts capitalized)$(22)$(20)
Cash paid for income taxes, netCash paid for income taxes, net(17)(13)Cash paid for income taxes, net(22)(17)
Supplemental disclosure of non-cash investing and financing transactions:Supplemental disclosure of non-cash investing and financing transactions:Supplemental disclosure of non-cash investing and financing transactions:
Accrued property, plant and equipment additionsAccrued property, plant and equipment additions$23 $19 Accrued property, plant and equipment additions$35 $23 
Inventory transfers to property, plant and equipmentInventory transfers to property, plant and equipmentInventory transfers to property, plant and equipment
Allowance for equity funds used during constructionAllowance for equity funds used during construction32Allowance for equity funds used during construction43

See Notes to Consolidated Financial Statements
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NSP-WISCONSIN AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS (UNAUDITED)
(amounts in millions, except share and per share data)
June 30, 2022Dec. 31, 2021 June 30, 2023Dec. 31, 2022
AssetsAssets  Assets  
Current assetsCurrent assets  Current assets  
Cash and cash equivalentsCash and cash equivalents$$11 Cash and cash equivalents$81 $
Accounts receivable, netAccounts receivable, net73 71 Accounts receivable, net80 84 
Accrued unbilled revenuesAccrued unbilled revenues50 69 Accrued unbilled revenues50 74 
Other receivablesOther receivables12 Other receivables12 19 
InventoriesInventories28 27 Inventories24 39 
Regulatory assetsRegulatory assets46 21 Regulatory assets32 44 
Prepaid taxesPrepaid taxes26 25 Prepaid taxes28 27 
Prepayments and otherPrepayments and otherPrepayments and other11 
Total current assetsTotal current assets241 234 Total current assets312 300 
Property, plant and equipment, netProperty, plant and equipment, net2,752 2,660 Property, plant and equipment, net3,055 2,914 
Other assetsOther assetsOther assets
Regulatory assetsRegulatory assets196 225 Regulatory assets187 193 
OtherOtherOther
Total other assetsTotal other assets201 229 Total other assets190 196 
Total assetsTotal assets$3,194 $3,123 Total assets$3,557 $3,410 
Liabilities and EquityLiabilities and EquityLiabilities and Equity
Current liabilitiesCurrent liabilitiesCurrent liabilities
Current portion of long-term debtCurrent portion of long-term debt$200 $— 
Short-term debtShort-term debt— 47 
Short-term debt— 83 
Borrowings under utility money pool arrangement67 — 
Accounts payableAccounts payable62 69 Accounts payable58 92 
Accounts payable to affiliatesAccounts payable to affiliates19 23 Accounts payable to affiliates21 19 
Dividends payable to parentDividends payable to parent19 26 Dividends payable to parent25 23 
Regulatory liabilitiesRegulatory liabilities15 Regulatory liabilities28 21 
Taxes accruedTaxes accrued13 10 Taxes accrued17 13 
Accrued interestAccrued interest10 10 Accrued interest12 12 
OtherOther23 21 Other20 28 
Total current liabilitiesTotal current liabilities228 246 Total current liabilities381 255 
Deferred credits and other liabilitiesDeferred credits and other liabilitiesDeferred credits and other liabilities
Deferred income taxesDeferred income taxes329 325 Deferred income taxes331 333 
Deferred investment tax creditsDeferred investment tax creditsDeferred investment tax credits
Regulatory liabilitiesRegulatory liabilities380 372 Regulatory liabilities415 383 
Customer advancesCustomer advances22 23 Customer advances24 23 
Pension and employee benefit obligationsPension and employee benefit obligations14 16 Pension and employee benefit obligations21 23 
OtherOther45 46 Other43 43 
Total deferred credits and other liabilitiesTotal deferred credits and other liabilities795 787 Total deferred credits and other liabilities839 810 
Commitments and contingenciesCommitments and contingencies00Commitments and contingencies
CapitalizationCapitalizationCapitalization
Long-term debtLong-term debt987 987 Long-term debt1,011 1,086 
Common stock — 1,000,000 shares authorized of $100 par value; 933,000 shares outstanding at June 30, 2022 and Dec. 31, 2021, respectively93 93 
Common stock — 1,000,000 shares authorized of $100 par value; 933,000 shares outstanding at June 30, 2023 and Dec. 31, 2022, respectivelyCommon stock — 1,000,000 shares authorized of $100 par value; 933,000 shares outstanding at June 30, 2023 and Dec. 31, 2022, respectively93 93 
Additional paid in capitalAdditional paid in capital702 642 Additional paid in capital806 761 
Retained earningsRetained earnings389 368 Retained earnings427 405 
Total common stockholder's equityTotal common stockholder's equity1,184 1,103 Total common stockholder's equity1,326 1,259 
Total liabilities and equityTotal liabilities and equity$3,194 $3,123 Total liabilities and equity$3,557 $3,410 

See Notes to Consolidated Financial Statements
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NSP-WISCONSIN AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF COMMON STOCKHOLDER'S EQUITY (UNAUDITED)
(amounts in millions, except share data; shares in thousands)data)
Common Stock IssuedRetained Earnings Total Common Stockholder's EquityCommon Stock IssuedRetained Earnings Total Common Stockholder's Equity
SharesPar ValueAdditional Paid
In Capital
SharesPar ValueAdditional Paid
In Capital
Three Months Ended June 30, 2022 and 2021
Balance at March 31, 2021933 $93 $635 $382 $1,110 
Net income14 14 
Common dividends declared to parent(14)(14)
Contribution of capital by parent
Balance at June 30, 2021933 $93 $638 $382 $1,113 
Three Months Ended June 30, 2023 and 2022Three Months Ended June 30, 2023 and 2022
Balance at March 31, 2022Balance at March 31, 2022933 $93 $672 $393 $1,158 Balance at March 31, 2022933,000 $93 $672 $393 $1,158 
Net incomeNet income1515Net income15 15 
Common dividends declared to parentCommon dividends declared to parent(19)(19)Common dividends declared to parent(19)(19)
Contribution of capital by parentContribution of capital by parent30 30 Contribution of capital by parent30 30 
Balance at June 30, 2022Balance at June 30, 2022933 $93 $702 $389 $1,184 Balance at June 30, 2022933,000 $93 $702 $389 $1,184 
Balance at March 31, 2023Balance at March 31, 2023933,000 $93 $791 $426 $1,310 
Net incomeNet income2626
Common dividends declared to parentCommon dividends declared to parent(25)(25)
Contribution of capital by parentContribution of capital by parent15 15 
Balance at June 30, 2023Balance at June 30, 2023933,000 $93 $806 $427 $1,326 
 Total Common Stockholder's Equity Total Common Stockholder's Equity
Common Stock IssuedRetained EarningsCommon Stock IssuedRetained Earnings
SharesPar ValueAdditional Paid
In Capital
SharesPar ValueAdditional Paid
In Capital
Six Months Ended June 30, 2022 and 2021
Balance at Dec. 31, 2020933 $93 $605 $370 $1,068 
Net income46 46 
Common dividends declared to parent(34)(34)
Contribution of capital by parent33 33 
Balance at June 30, 2021933 $93 $638 $382 $1,113 
Six Months Ended June 30, 2023 and 2022Six Months Ended June 30, 2023 and 2022
Balance at Dec. 31, 2021Balance at Dec. 31, 2021933 $93 $642 $368 $1,103 Balance at Dec. 31, 2021933,000 $93 $642 $368 $1,103 
Net incomeNet income6262Net income62 62 
Common dividends declared to parentCommon dividends declared to parent(41)(41)Common dividends declared to parent(41)(41)
Contribution of capital by parentContribution of capital by parent60 60 Contribution of capital by parent60 60 
Balance at June 30, 2022Balance at June 30, 2022933 $93 $702 $389 $1,184 Balance at June 30, 2022933,000 $93 $702 $389 $1,184 
Balance at Dec. 31, 2022Balance at Dec. 31, 2022933,000 $93 $761 $405 $1,259 
Net incomeNet income7171
Common dividends declared to parentCommon dividends declared to parent(49)(49)
Contribution of capital by parentContribution of capital by parent45 45 
Balance at June 30, 2023Balance at June 30, 2023933,000 $93 $806 $427 $1,326 
See Notes to Consolidated Financial StatementsSee Notes to Consolidated Financial StatementsSee Notes to Consolidated Financial Statements




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NSP-WISCONSIN AND SUBSIDIARIES
Notes to Consolidated Financial Statements (UNAUDITED)
In the opinion of management, the accompanying unaudited consolidated financial statements contain all adjustments necessary to present fairly, in accordance with GAAP, the financial position of NSP-Wisconsin and its subsidiaries as of June 30, 20222023 and Dec. 31, 2021;2022; the results of NSP-Wisconsin's operations, including the components of net income, changes in stockholder's equity and comprehensive income for the three and six months ended June 30, 20222023 and 2021;2022; and NSP-Wisconsin's cash flows for the six months ended June 30, 20222023 and 2021.2022.
All adjustments are of a normal, recurring nature, except as otherwise disclosed. Management has also evaluated the impact of events occurring after June 30, 20222023 up to the date of issuance of these consolidated financial statements. These statements contain all necessary adjustments and disclosures resulting from that evaluation. The Dec. 31, 20212022 balance sheet information has been derived from the audited 20212022 consolidated financial statements included in the NSP-Wisconsin Annual Report on Form 10-K for the year ended Dec. 31, 2021.2022.
Notes to the consolidated financial statements have been prepared pursuant to the rules and regulations of the SEC for Quarterly Reports on Form 10-Q. Certain information and note disclosures normally included in financial statements prepared in accordance with GAAP on an annual basis have been condensed or omitted pursuant to such rules and regulations. For further information, refer to the consolidated financial statements and notes thereto included in the NSP-Wisconsin Annual Report on Form 10-K for the year ended Dec. 31, 2021,2022, filed with the SEC on Feb. 23, 2022.2023. Due to the seasonality of NSP-Wisconsin’s electric and natural gas sales, interim results are not necessarily an appropriate base from which to project annual results.

1. Summary of Significant Accounting Policies
The significant accounting policies set forth in Note 1 to the consolidated financial statements in the NSP-Wisconsin Annual Report on Form 10-K for the year ended Dec. 31, 20212022 appropriately represent, in all material respects, the current status of accounting policies and are incorporated herein by reference.
2. Accounting Pronouncements
As of June 30, 2022,2023, there was no material impact from the recent adoption of new accounting pronouncements, nor expected material impact from recently issued accounting pronouncements yet to be adopted, on NSP-Wisconsin's consolidated financial statements.
3. Selected Balance Sheet Data
(Millions of dollars)(Millions of dollars)June 30, 2022Dec. 31, 2021(Millions of dollars)June 30, 2023Dec. 31, 2022
Accounts receivable, netAccounts receivable, netAccounts receivable, net
Accounts receivableAccounts receivable$81 $79 Accounts receivable$88 $93 
Less allowance for bad debtsLess allowance for bad debts(8)(8)Less allowance for bad debts(8)(9)
Accounts receivable, netAccounts receivable, net$73 $71 Accounts receivable, net$80 $84 
(Millions of dollars)June 30, 2022Dec. 31, 2021
Inventories
Materials and supplies$$
Fuel12 
Natural gas10 
Total inventories$28 $27 

(Millions of dollars)June 30, 2023Dec. 31, 2022
Inventories
Materials and supplies$10 $
Fuel11 11 
Natural gas20 
Total inventories$24 $39 
(Millions of dollars)June 30, 2022Dec. 31, 2021
Property, plant and equipment, net
Electric plant$3,459 $3,348 
Natural gas plant434 423 
Common and other property247 233 
Construction work in progress136 134 
Total property, plant and equipment4,276 4,138 
Less accumulated depreciation(1,524)(1,478)
Property, plant and equipment, net$2,752 $2,660 

(Millions of dollars)June 30, 2023Dec. 31, 2022
Property, plant and equipment, net
Electric plant$3,708 $3,579 
Natural gas plant478 465 
Common and other property270 260 
Construction work in progress210 174 
Total property, plant and equipment4,666 4,478 
Less accumulated depreciation(1,611)(1,564)
Property, plant and equipment, net$3,055 $2,914 
4. Borrowings and Other Financing Instruments
Short-Term Borrowings
NSP-Wisconsin meets its short-term liquidity requirements primarily through the issuance of commercial paper and borrowings under its credit facility and the money pool.
Money Pool — Xcel Energy Inc. and its utility subsidiaries have established a money pool arrangement that allows for short-term investments in and borrowings between the utility subsidiaries. Xcel Energy Inc. may make investments in the utility subsidiaries at market-based interest rates; however, the money pool arrangement does not allow the utility subsidiaries to make investments in Xcel Energy Inc.
Money pool borrowings for NSP-Wisconsin:borrowings:
(Amounts in Millions, Except Interest Rates)(Amounts in Millions, Except Interest Rates)Three Months Ended June 30, 2022Year Ended Dec. 31, 2021(Amounts in Millions, Except Interest Rates)Three Months Ended June 30, 2023Year Ended Dec. 31, 2022
Borrowing limitBorrowing limit$150 $150 Borrowing limit$150 $150 
Amount outstanding at period endAmount outstanding at period end67 — Amount outstanding at period end— — 
Average amount outstandingAverage amount outstanding48 16 Average amount outstanding18 25 
Maximum amount outstandingMaximum amount outstanding77 78 Maximum amount outstanding43 81 
Weighted average interest rate, computed on a daily basisWeighted average interest rate, computed on a daily basis0.82 %0.05 %Weighted average interest rate, computed on a daily basis4.84 %1.10 %
Weighted average interest rate at period endWeighted average interest rate at period end1.40 N/AWeighted average interest rate at period endN/AN/A
Commercial Paper Commercial paper outstanding for NSP-Wisconsin:outstanding:
(Amounts in Millions, Except Interest Rates)(Amounts in Millions, Except Interest Rates)Three Months Ended June 30, 2022Year Ended Dec. 31, 2021(Amounts in Millions, Except Interest Rates)Three Months Ended June 30, 2023Year Ended Dec. 31, 2022
Borrowing limitBorrowing limit$150 $150 Borrowing limit$150 $150 
Amount outstanding at period endAmount outstanding at period end— 83 Amount outstanding at period end— 47 
Average amount outstandingAverage amount outstandingAverage amount outstanding18 
Maximum amount outstandingMaximum amount outstanding50 83 Maximum amount outstanding30 123 
Weighted average interest rate, computed on a daily basisWeighted average interest rate, computed on a daily basis0.60 %0.18 %Weighted average interest rate, computed on a daily basis5.01 %1.03 %
Weighted average interest rate at period endWeighted average interest rate at period endN/A0.21 Weighted average interest rate at period endN/A4.55 
Letters of Credit — NSP-Wisconsin uses letters of credit, generally with terms of one year, to provide financial guarantees for certain obligations. At both June 30, 20222023 and Dec. 31, 2021,2022, there were no letters of credit outstanding under the credit facility.
Revolving Credit Facility In order to issue its commercial paper, NSP-Wisconsin must have a revolving credit facility in place at least equal to or greater than the amount of its commercial paper borrowing limit and cannot issue commercial paper exceeding available capacity under this credit facility. The credit facility provides short-term financing in the form of notes payable to banks, letters of credit and back-up support for commercial paper borrowings.
NSP-Wisconsin has the right to request an extension of the revolving credit facility termination date for an additional one-year period. All extension requests are subject to majority bank group approval.
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As of June 30, 2022,2023, NSP-Wisconsin had the following committed revolving credit facility available (in millions of dollars):
Credit Facility (a)
Outstanding (b)
Available
$150 $— $150 
(a)Expires in June 2024.September 2027.
(b)Includes outstanding commercial paper.
All credit facility bank borrowings, outstanding letters of credit and outstanding commercial paper reduce the available capacity under the credit facility. NSP-Wisconsin had no directno direct advances on the credit facility outstanding at June 30, 20222023 and Dec. 31, 2021.2022.
Other Short-Term Borrowings Clearwater Investments, Inc., a NSP-Wisconsin subsidiary, had an immaterial note payable to Xcel Energy Inc. as of June 30, 20222023 and Dec. 31, 2021,2022, respectively.
Long-Term Borrowings and Other Financing Instruments
On July 15, 2022, subsequent toDuring the end of the quarter,six months ended June 30, 2023, NSP-Wisconsin priced a private placement of $100issued $125 million of 4.86%5.30% private placement first mortgage bonds due SeptemberJune 15, 2052. The closing of the sale of the bonds is expected to occur on Sept. 12, 2022.2053.
5. Revenues
Revenue is classified by the type of goods/services rendered and market/customer type. NSP-Wisconsin’s operating revenues consisted of the following:
Three Months Ended
June 30, 2022
Three Months Ended
June 30, 2023
(Millions of Dollars)(Millions of Dollars)ElectricNatural GasTotal(Millions of Dollars)ElectricNatural GasTotal
Major revenue typesMajor revenue typesMajor revenue types
Revenue from contracts with customers:Revenue from contracts with customers:Revenue from contracts with customers:
ResidentialResidential$67 $18 $85 Residential$68 $13 $81 
C&IC&I119 15 134 C&I122 131 
OtherOther— Other— 
Total retailTotal retail188 33 221 Total retail192 22 214 
Interchange52 — 52 
Other
Interchange and otherInterchange and other41 — 41 
Total revenue from contracts with customersTotal revenue from contracts with customers241 34 275 Total revenue from contracts with customers233 22 255 
Alternative revenue and otherAlternative revenue and otherAlternative revenue and other
Total revenuesTotal revenues$243 $35 $278 Total revenues$236 $24 $260 

Three Months Ended
June 30, 2021
Three Months Ended
June 30, 2022
(Millions of Dollars)(Millions of Dollars)ElectricNatural GasTotal(Millions of Dollars)ElectricNatural GasTotal
Major revenue typesMajor revenue typesMajor revenue types
Revenue from contracts with customers:Revenue from contracts with customers:Revenue from contracts with customers:
ResidentialResidential$64 $15 $79 Residential$67 $18 $85 
C&IC&I108 15 123 C&I119 15 134 
OtherOther— Other— 
Total retailTotal retail174 30 204 Total retail188 33 221 
Interchange46 — 46 
Other
Interchange and otherInterchange and other53 54 
Total revenue from contracts with customersTotal revenue from contracts with customers221 31 252 Total revenue from contracts with customers241 34 275 
Alternative revenue and otherAlternative revenue and other— Alternative revenue and other
Total revenuesTotal revenues$224 $31 $255 Total revenues$243 $35 $278 
Six Months Ended
June 30, 2022
Six Months Ended
June 30, 2023
(Millions of Dollars)(Millions of Dollars)ElectricNatural GasTotal(Millions of Dollars)ElectricNatural GasTotal
Major revenue typesMajor revenue typesMajor revenue types
Revenue from contracts with customers:Revenue from contracts with customers:Revenue from contracts with customers:
ResidentialResidential$148 $60 $208 Residential$150 $54 $204 
C&IC&I235 49 284 C&I242 43 285 
OtherOther— Other— 
Total retailTotal retail387 109 496 Total retail396 97 493 
Interchange99 — 99 
Other
Interchange and otherInterchange and other88 89 
Total revenue from contracts with customersTotal revenue from contracts with customers488 111 599 Total revenue from contracts with customers484 98 582 
Alternative revenue and otherAlternative revenue and otherAlternative revenue and other
Total revenuesTotal revenues$493 $113 $606 Total revenues$490 $101 $591 
Six Months Ended
June 30, 2021
(Millions of Dollars)ElectricNatural GasTotal
Major revenue types
Revenue from contracts with customers:
Residential$135 $46 $181 
C&I211 39 250 
Other— 
Total retail349 85 434 
Interchange92 — 92 
Other
Total revenue from contracts with customers442 87 529 
Alternative revenue and other
Total revenues$448 $88 $536 

Six Months Ended
June 30, 2022
(Millions of Dollars)ElectricNatural GasTotal
Major revenue types
Revenue from contracts with customers:
Residential$148 $60 $208 
C&I235 49 284 
Other— 
Total retail387 109 496 
Interchange and other101 103 
Total revenue from contracts with customers488 111 599 
Alternative revenue and other
Total revenues$493 $113 $606 
6. Income Taxes
Reconciliation between the statutory rate and effective tax rate:
Six Months Ended June 30Six Months Ended June 30
2022202120232022
Federal statutory rateFederal statutory rate21.0 %21.0 %Federal statutory rate21.0 %21.0 %
State tax (net of federal tax effect)State tax (net of federal tax effect)6.2 6.2 State tax (net of federal tax effect)6.2 6.2 
Increases (decreases) in tax from:
Decreases:Decreases:
Plant regulatory differences (a)
Plant regulatory differences (a)
(4.0)(5.4)
Plant regulatory differences (a)
(3.5)(4.0)
Tax credits(0.8)(1.3)
Other (net)Other (net)0.1 0.2 Other (net)(0.9)(0.7)
Effective income tax rateEffective income tax rate22.5 %20.7 %Effective income tax rate22.8 %22.5 %
(a)RegulatoryPlant regulatory differences for income tax primarily relate to the credit of excess deferred taxes to customers through the average rate assumption method. Income tax benefits associated with the credit of excess deferred taxes are offset by corresponding revenue reductions.
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7. Fair Value of Financial Assets and Liabilities
Fair Value Measurements
Accounting guidance for fair value measurements and disclosures provides a single definition of fair value and requires disclosures about assets and liabilities measured at fair value. A hierarchical framework for disclosing the observability of the inputs utilized in measuring assets and liabilities at fair value is established by this guidance.value.
Level 1 — Quoted prices are available in active markets for identical assets or liabilities as of the reporting date. The types of assets and liabilities included in Level 1 are highly liquid and actively traded instruments with quotedobservable actual trading prices.
Level 2 — Pricing inputs are other than quotedactual trading prices in active markets, but are either directly or indirectly observable as of the reporting date. The types of assets and liabilities included in Level 2 are typically either comparable to actively traded securities or contracts or priced with models using highly observable inputs.
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Level 3 — Significant inputs to pricing have little or no observability as of the reporting date. The types of assets and liabilities included in Level 3 areinclude those valued with models requiring significant management judgment or estimation.
Specific valuation methods include:
Cash equivalents— The fair values of cash equivalents are generally based on cost plus accrued interest; money market funds are measured using quoted net asset value.
Interest rate derivativesCommodity Derivatives The fair values of interest rate derivatives are based on broker quotes that utilize current market interest rate forecasts.
Commodity derivativesMethods used to measure the fair value of commodity derivative forwards and options utilize forward prices and volatilities, as well as pricing adjustments for specific delivery locations, and are generally assigned a Level 2 classification. When contractual settlementscontracts relate to inactive delivery locations or extend to periods beyond those readily observable on active exchanges, or quoted by brokers, the significance of the use of less observable inputs on a valuation is evaluated, and may result in Level 3 classification.
Derivative InstrumentsActivities and Fair Value Measurements
NSP-Wisconsin enters into derivative instruments, including forward contracts, futures, swaps and options, for trading purposes and to manage risk in connection with changes in interest rates and utility commodity prices.

Interest Rate Derivatives NSP-Wisconsin may enter into various instruments that effectively fix the yield or price on a specified benchmark interest rate for an anticipated debt issuance for a specific period. These derivative instruments are generally designated as cash flow hedges for accounting purposes. As of June 30, 2022 and Dec. 31, 2021, NSP-Wisconsin had no unsettled interest rate derivatives.
Commodity Derivatives NSP-Wisconsin may enterenters into derivative instruments to manage variability of future cash flows from changes in commodity prices in its electric and natural gas operations, as well as for trading purposes.operations. This could include the purchase or sale of natural gas to generate electric energy and natural gas for resale. At
As of June 30, 2022 and Dec. 31, 2021,2023, NSP-Wisconsin had no gross notional amounts of commodity options.contracts designated as cash flow hedges.
Consideration of Credit Risk and Concentrations  NSP-Wisconsin continuously monitors the creditworthiness of counterparties to its interest rate derivatives and commodity derivative contracts prior to settlement, and assesses each counterparty’s ability to perform on the transactions set forth in the contracts. Impact of credit risk was immaterial to the fair value of unsettled commodity derivatives presented on the consolidated balance sheets.
Recurring Derivative Fair Value Measurements
Impact of Derivative Activities on Incomederivative activity:
Changes in the fair value of natural gas commodity derivatives resulted in immaterial net losses and immaterial gains for the three and six months ended June 30, 2022, respectively. Changes in the fair value of natural gas commodity derivatives resulted in no gains or losses2023 and $1 million in losses for the three and six months ended June 30, 2021, respectively,2022, which were recognized as regulatory assets and liabilities. The classification as a regulatory asset or liability is based on commission approved regulatory recovery mechanisms.
During the three months ended June 30, 2022 and 2021, there were no settlement gains or losses on natural gas commodity derivatives. During the six months ended June 30, 2022 and 2021, there were $1 million of settlement losses, respectively, which were recognized subject to purchased natural gas cost recovery mechanisms, which result in reclassifications of derivative settlement gains and losses out of income to a regulatory asset or liability, as appropriate.
NSP-Wisconsin had no derivative instruments designated as fair value hedges during the three and six months ended June 30, 2023 and 2022, there were immaterial natural gas commodity derivatives settlement losses and 2021.
gains.
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Table of ContentsDuring the three and six months ended June 30, 2023 and 2022, immaterial pre-tax losses were recognized during the period in income related to option premium amortization.

Recurring Fair Value Measurements— DerivativeNSP-Wisconsin had immaterial outstanding derivative assets andor liabilities measured at fair value on a recurring basis were as follows:
June 30, 2022
Fair ValueFair Value Total
Netting (a)
Total (b)
(Millions of Dollars)Level 1Level 2Level 3
Current derivative assets
Natural gas commodity$— $$— $$— $
June 30, 2022
Fair ValueFair Value Total
Netting (a)
Total (c)
(Millions of Dollars)Level 1Level 2Level 3
Current derivative liabilities
Natural gas commodity$— $$— $$— $
Dec. 31, 2021
Fair ValueFair Value Total
Netting (a)
Total (b)
(Millions of Dollars)Level 1Level 2Level 3
Current derivative assets
Natural gas commodity$— $$— $$— $
Dec. 31, 2021
Fair ValueFair Value Total
Netting (a)
Total (c)
(Millions of Dollars)Level 1Level 2Level 3
Current derivative liabilities
Natural gas commodity$— $$— $$— $
(a)    NSP-Wisconsin nets derivative instruments and related collateral on its consolidated balance sheets when supported by a legally enforceable master netting agreement, and all derivative instruments and related collateral amounts were subject to master netting agreements atof June 30, 20222023 and Dec. 31, 2021. The counterparty netting amounts presented exclude settlement receivables and payables and non-derivative amounts that may be subject to the same master netting agreements.2022.
(b)    Included in prepayments and other current assets at June 30, 2022 and Dec. 31, 2021 on the consolidated balance sheets.
(c)    Included in other current liabilities at June 30, 2022 and Dec. 31, 2021 on the consolidated balance sheets.
Fair Value of Long-Term Debt
OtherAs of June 30, 2023, other financial instruments for which the carrying amount did not equal fair value:
June 30, 2022Dec. 31, 2021June 30, 2023Dec. 31, 2022
(Millions of Dollars)(Millions of Dollars)Carrying AmountFair ValueCarrying AmountFair Value(Millions of Dollars)Carrying AmountFair ValueCarrying AmountFair Value
Long-term debt, including current portionLong-term debt, including current portion$987 $949 $987 $1,143 Long-term debt, including current portion$1,211 $1,107 $1,086 $980 
Fair value of NSP-Wisconsin’s long-term debt is estimated based on recent trades and observable spreads from benchmark interest rates for similar securities. Fair value estimates are based on information available to management as of June 30, 20222023 and Dec. 31, 20212022, and given the observability of the inputs, fair values presented for long-term debt were assigned as Level 2.
8. Benefit Plans and Other Postretirement Benefits
Components of Net Periodic Benefit Cost
Three Months Ended June 30Three Months Ended June 30
2022202120232022
(Millions of Dollars)(Millions of Dollars)Pension Benefits(Millions of Dollars)Pension Benefits
Service costService cost$$Service cost$$
Interest cost (a)
Interest cost (a)
Interest cost (a)
Expected return on plan assets (a)
Expected return on plan assets (a)
(2)(2)
Expected return on plan assets (a)
(2)(2)
Amortization of net loss (a)
Amortization of net loss (a)
Amortization of net loss (a)
— 
Net periodic benefit cost$$
Net benefit cost recognized for financial reportingNet benefit cost recognized for financial reporting$$
Six Months Ended June 30
20222021
(Millions of Dollars)Pension Benefits
Service cost$$
Interest cost (a)
Expected return on plan assets (a)
(4)(4)
Amortization of net loss (a)
Net periodic benefit cost$$
Six Months Ended June 30
20232022
(Millions of Dollars)Pension Benefits
Service cost$$
Interest cost (a)
Expected return on plan assets (a)
(4)(4)
Amortization of net loss (a)
Net benefit cost recognized for financial reporting$$
(a)The components of net periodic cost other than the service cost component are included in the line item “Other expense,income, net” in the consolidated statements of income or capitalized on the consolidated balance sheets as a regulatory asset.
In January 2022,2023, contributions oftotaling $50 million were made across 4 of Xcel Energy’s pension plans, of which $1$4 million was attributable to NSP-Wisconsin. Xcel Energy does not expect additional pension contributions during 2022.2023.
9. Commitments and Contingencies
The following includes commitments, contingencies and unresolved contingencies that are material to NSP-Wisconsin’s financial position.
Legal
NSP-Wisconsin is involved in various litigation matters in the ordinary course of business. The assessment of whether a loss is probable or is a reasonable possibility, and whether the loss or a range of loss is estimable, often involves a series of complex judgments about future events. Management maintains accruals for losses probable of being incurred and subject to reasonable estimation. Management is sometimes unable to estimate an amount or range of a reasonably possible loss in certain situations, including but not limited to when (1) the damages sought are indeterminate, (2) the proceedings are in the early stages, or (3) the matters involve novel or unsettled legal theories.
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In such cases, there is considerable uncertainty regarding the timing or ultimate resolution, including a possible eventual loss. For current proceedings not specifically reported herein, management does not anticipate that the ultimate liabilities, if any, would have a material effect on NSP-Wisconsin’s consolidated financial statements. Legal fees are generally expensed as incurred.
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Gas Trading Litigation e prime is a wholly owned subsidiary of Xcel Energy. e prime was in the business of natural gas trading and marketing but has not engaged in natural gas trading or marketing activities since 2003. Multiple lawsuits involving multiple plaintiffs seeking monetary damages were commenced against e prime and its affiliates, including Xcel Energy, between 2003 and 2009 alleging fraud and anticompetitive activities in conspiring to restrain the trade of natural gas and manipulate natural gas prices. Cases were all consolidated in the U.S. District Court in Nevada.
NaNOne case remains active which includes a multi-district litigation matter consisting of a Wisconsin purported class (Arandell Corp.). The Court issued a ruling onin June 30, 2022 granting plaintiffs’ class certification. Defendants will work together to prepare and file a petition appealing the class certification ruling toIn April 2023, the Seventh Circuit.Circuit Court of Appeals heard the defendants’ appeal challenging whether the district court properly assessed class certification. A decision relating to class certification is expected later this year. Xcel Energy has concluded that aconsiders the reasonably possible loss is remote for the remaining lawsuit.associated with this litigation to be immaterial.
Rate Matters
NSP-Wisconsin is involved in various regulatory proceedings arising in the ordinary course of business. Until resolution, typically in the form of a rate order, uncertainties may exist regarding the ultimate rate treatment for certain activities and transactions. Amounts have been recognized for probable and reasonably estimable losses that may result. Unless otherwise disclosed, any reasonably possible range of loss in excess of any recognized amount is not expected to have a material effect on the financial statements.
MISO ROE ComplaintsIn November 2013 and February 2015, customer groups filed two ROE complaints against MISO TOs, which includes NSP-Minnesota and NSP-Wisconsin. The first complaint requested a reduction in base ROE transmission formula rates from 12.38% to 9.15% for the time period of Nov. 12, 2013 to Feb. 11, 2015, and removal of ROE adders (including those for Regional Transmission OrganizationRTO membership). The second complaint requested, for a subsequent time period, a base ROE reduction from 12.38% to 8.67%.
The FERC has subsequently issued various related orders (including Opinion Nos. 569, 569A and 569B) related to ROE methodology/calculations and timing. NSP-Minnesota has recognized a liability for its best estimate of finalprocessed refunds to customers for applicable complaint periods based on the ROE in the most recent applicable opinions on behalf of the NSP System.
The MISO TOs and various other parties have filed petitions for review of the FERC’s most recent applicable opinions at the D.C. Circuit. A decisionIn August 2022, the D.C. Circuit ruled that FERC had not adequately supported its conclusions, vacated FERC’s related orders, and remanded the issue back to FERC for further proceedings, which remain pending. Additional exposure, if any, related to this matter is expected by the end of the third quarter of 2022.to be immaterial.
Environmental
MGP, Landfill and Disposal Sites
NSP-Wisconsin is investigating, remediating or performing post-closure actions at 4one MGP, landfill or other disposal sites across its service territories.
NSP-Wisconsin has recognized its best estimate of costs/liabilities from final resolution of these issues, however, the outcome and timing isare unknown. In addition, there may be insurance recovery and/or recovery from other potentially responsible parties, offsetting a portion of costs incurred.
Environmental Requirements — Water and Waste
Federal Clean Water Act Section 316(b) — The federalFederal Clean Water Act requires the EPA to regulate cooling water intake structures to assure that these structuresthey reflect the best technology available for minimizing impingement and entrainment of aquatic species. NSP-Wisconsin estimates capital expenditures of approximately $4$5 million may be required to comply with impingement and entrainmentthe requirements. NSP-Wisconsin believes 2two plants could be required to make improvements to reduce impingement and entrainment. NSP-Wisconsin anticipates these costs will be recoverable through regulatory mechanisms.
Environmental Requirements — Air
Clean Air Act NOx Allowance Allocations —In June 2023, after disapproving state implementation plans, the EPA published final regulations under the "Good Neighbor" provisions of the Clean Air Act. The final rule applies to generation facilities in Wisconsin, as well as other states outside of our service territory. The rule establishes an allowance trading program for NOx that will impact NSP-Wisconsin’s fossil fuel-fired electric generating facilities. Applicable facilities will have to secure additional allowances, install NOx controls and/or develop a strategy of operations that utilizes the existing allowance allocations. Guidelines are also established for allowance banking and emission limit backstops.
While the financial impacts of the final rule are uncertain and dependent on market forces and anticipated generation, NSP-Wisconsin anticipates the costs would be recoverable through regulatory mechanisms.
10. Segment Information
NSP-Wisconsin evaluates performance based on profit or loss generated from the product or service provided. These segments are managed separately because the revenue streams are dependent upon regulated rate recovery, which is separately determined for each segment.
NSP-Wisconsin has the following reportable segments:
Regulated Electric — The regulated electric utility segment generates electricity, which is transmitted and distributed in Wisconsin and Michigan.
Regulated Natural Gas — The regulated natural gas utility segment purchases, transports, stores and distributes natural gas in portions of Wisconsin and Michigan.
Asset and capital expenditure information is not provided for NSP-Wisconsin's reportable segments. As an integrated electric and natural gas utility, NSP-Wisconsin operates significant assets that are not dedicated to a specific business segment. Reporting assets and capital expenditures by business segment would require arbitrary and potentially misleading allocations, which may not necessarily reflect the assets that would be required for the operation of the business segments on a stand-alone basis.
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Certain costs, such as common depreciation, common O&M expenses and interest expense are allocated based on cost causation allocators across each segment. In addition, a general allocator is used for certain general and administrative expenses, including office supplies, rent, property insurance and general advertising.
NSP-Wisconsin's segment information:
Three Months Ended June 30Three Months Ended June 30
(Millions of Dollars)(Millions of Dollars)20222021(Millions of Dollars)20232022
Regulated ElectricRegulated ElectricRegulated Electric
Total revenues (a)
Total revenues (a)
$243 $224 
Total revenues (a)
$236 $243 
Net incomeNet income15 16 Net income30 15 
Regulated Natural GasRegulated Natural GasRegulated Natural Gas
Total revenues Total revenues$35 $31  Total revenues$24 $35 
Net income(1)(2)
Net lossNet loss(3)(1)
All OtherAll OtherAll Other
Net income$$— 
Net (loss) incomeNet (loss) income$(1)$
Consolidated TotalConsolidated TotalConsolidated Total
Total revenues (a)
$278 $255 
Total operating revenuesTotal operating revenues$260 $278 
Net incomeNet income15 14 Net income26 15 
(a)Total revenues include $52$51 million and $46$52 million of affiliate electric revenue for the three months ended June 30, 20222023 and 2021,2022, respectively.
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Six Months Ended June 30Six Months Ended June 30
(Millions of Dollars)(Millions of Dollars)20222021(Millions of Dollars)20232022
Regulated ElectricRegulated ElectricRegulated Electric
Total revenues (a)
Total revenues (a)
$493 $448 
Total revenues (a)
$490 $493 
Net incomeNet income47 40 Net income63 47 
Regulated Natural GasRegulated Natural GasRegulated Natural Gas
Operating revenuesOperating revenues$101 $113 
Intersegment revenueIntersegment revenue— 
Total revenuesTotal revenues$113 $88 Total revenues$102 $113 
Net incomeNet income14 Net income14 
All OtherAll OtherAll Other
Net incomeNet income$$— Net income$— $
Consolidated TotalConsolidated TotalConsolidated Total
Total revenues (a)
$606 $536 
Operating revenues (a)
Operating revenues (a)
$592 $606 
Reconciling eliminationsReconciling eliminations(1)— 
Total operating revenuesTotal operating revenues$591 $606 
Net incomeNet income71 62 
Net income62 46 
(a)Total revenues include $99$101 million and $92$99 million of affiliate electric revenue for the six months ended June 30, 20222023 and 2021,2022, respectively.
ITEM 2 — MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
Discussion of financial condition and liquidity for NSP-Wisconsin is omitted per conditions set forth in General Instructions H(1)(a) and (b) of Form 10-Q for wholly owned subsidiaries. It is replaced with management’s narrative analysis of the results of operations set forth in General Instruction H(2)(a) of Form 10-Q for wholly owned subsidiaries (reduced disclosure format).
Non-GAAP Financial Measures
The following discussion includes financial information prepared in accordance with GAAP, as well as certain non-GAAP financial measures such as ongoing earnings. Generally, a non-GAAP financial measure is a measure of a company’s financial performance, financial position or cash flows that adjusts amounts that are adjusted from measures calculated and presented in accordance with GAAP.
NSP-Wisconsin’s management uses non-GAAP measures for financial planning and analysis, for reporting of results to the Board of Directors, in determining performance-based compensation and communicating its earnings outlook to analysts and investors. Non-GAAP financial measures are intended to supplement investors’ understanding of our performance and should not be considered alternatives for financial measures presented in accordance with GAAP. These measures are discussed in more detail below and may not be comparable to other companies’ similarly titled non-GAAP financial measures.
Earnings Adjusted for Certain Items (Ongoing Earnings)
Ongoing earnings reflect adjustments to GAAP earnings (net income) for certain itemsitems.
We use this non-GAAP financial measure to evaluate and provide details of NSP-Wisconsin’s core earnings and underlying performance. We believe this measurement is useful to investors to evaluate the actual and projected financial performance and contribution of NSP-Wisconsin. For the three and six months ended June 30, 20222023 and 2021,2022, there were no such adjustments to GAAP earnings and therefore GAAP earnings equal ongoing earnings.
Results of Operations
NSP-Wisconsin's net income was $62$71 million for the six months ended June 30, 2022,2023, compared to $46$62 million for the prior year. The increase reflects the impact of regulatory rate outcomes, sales growthAdditional electric and favorable weather,natural gas infrastructure investment recoveries were partially offset by unfavorable weather, higher depreciation and O&M expenses.
Electric Margin
Electric margin is presented as electric revenues less electric fuel and purchased power expenses. Expenses incurred for electric fuel and purchased power are generally recovered through various regulatory recovery mechanisms. As a result, changes in these expenses are generally offset in operating revenues.
Electric revenues and fuel and purchased power expenses are impacted by fluctuations in the price of natural gas, coal and uranium. However, these price fluctuations generally have minimal impact on earnings impact due to fuel recovery mechanisms. In addition, electric customers receive a credit for production tax credits generated, which reduce electric revenue and income taxes.
Electric revenues, fuel and purchased power and electric margin and explanation of the changes are listed as follows:margin:
Six Months Ended June 30Six Months Ended June 30
(Millions of Dollars)(Millions of Dollars)20222021(Millions of Dollars)20232022
Electric revenuesElectric revenues$493 $448 Electric revenues$490 $493 
Electric fuel and purchased powerElectric fuel and purchased power(236)(216)Electric fuel and purchased power(203)(236)
Electric marginElectric margin$257 $232 Electric margin$287 $257 
(Millions of Dollars)Six Months Ended June 30, 20222023 vs. 20212022
Regulatory rate outcomes$1716 
Sales and demandInterchange agreement billings with NSP-Minnesota(a)
715 
Estimated impact of weather(4)
Other (net)13 
Total increase$2530 
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Natural Gas Margin
Natural gas margin is presented as natural gas revenues less the cost of natural gas sold and transported. Expenses incurred for the cost of natural gas sold are generally recovered through various regulatory recovery mechanisms. As a result, changes in these expenses are generally offset in operating revenues.
Natural gas expense varies with changing sales and the cost of natural gas. However, fluctuations in the cost of natural gas generally have minimal earnings impact due to cost recovery mechanisms.
Natural gas revenues, cost of natural gas sold and transported and natural gas margin and explanation of the changes are listed as follows:margin:
Six Months Ended June 30Six Months Ended June 30
(Millions of Dollars)(Millions of Dollars)20222021(Millions of Dollars)20232022
Natural gas revenuesNatural gas revenues$113 $88 Natural gas revenues$101 $113 
Cost of natural gas sold and transportedCost of natural gas sold and transported(65)(51)Cost of natural gas sold and transported(55)(65)
Natural gas marginNatural gas margin$48 $37 Natural gas margin$46 $48 
(Millions of Dollars)Six Months Ended June 30, 20222023 vs. 20212022
Regulatory rate outcomes (Wisconsin)$72 
Estimated impact of weather(4)
Natural gas sales and transport (excluding weather impact)
Other (net)(1)
Total increasedecrease$11 (2)
Non-Fuel Operating Expenses and Other Items
O&M Expenses — O&M costs increased $8 million year-to-date,year to date. Increase was primarily due to higher costscost for storms and vegetation management, additional investments in technologyinflationary pressures including labor increases and customer programs and interchange expenses, partially offset by a reduction in benefit costs.supply chain challenges.
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Depreciation and Amortization Depreciation and amortization increased $5 million year-to-date,year to date, primarily due to normal system expansion.
Income Taxes Income tax expense increased $6 million for the first six months of 2022. The increase was primarily driven by higher pretax earnings in 2022.
See Note 6 to the consolidated financial statements for further information.
Public Utility Regulation and Other
The FERC and various state and local regulatory commissions regulate NSP-Wisconsin. The electric and natural gas rates charged to customers of NSP-Wisconsin are approved by the FERC or the regulatory commissions in the states in which it operates.

Rates are designed to recover plant investment, operating costs and an allowed return on investment. NSP-Wisconsin requests changes in utility rates through commission filings.
Changes in operating costs can affect NSP-Wisconsin’s financial results, depending on the timing of rate case filings and implementation of final rates. Other factors affecting rate filings are new investments, sales, conservation and demand side management efforts, and the cost of capital. In addition, the regulatory commissions authorize the ROE, capital structure and depreciation rates in rate proceedings. Decisions by these regulators can significantly impact NSP-Wisconsin’s results of operations.
Except to the extent noted below, the circumstances set forth in Public Utility Regulation included in Item 7 of NSP-Wisconsin’s Annual Report on Form 10-K for the year ended Dec. 31, 20212022 appropriately represent, in all material respects, the current status of public utility regulation and are incorporated herein by reference.
Pending Regulatory ProceedingProceedings
Michigan Natural GasWisconsin Rate CaseIn July 2022,April 2023, NSP-Wisconsin filed a Wisconsin rate case seeking an application with the Public Service Commissionelectric increase of Michigan seeking$40 million (rate increase of 4.8%) and a revenue increase in base natural gas ratesincrease of $1$9 million for(rate increase of 5.3%). The rate request is based on a ROE of 10.25%, a 52.5% equity ratio and 2024 forward-looking test year. A final decision by the periodPSCW is expected in late fourth quarter of 2023-2025.2023.
Other
Supply Chain
Xcel Energy’sNSP-Wisconsin’s ability to meet customer energy requirements, respond to storm-related disruptions and execute our capital expenditure program are dependent on maintaining an efficient supply chain. Manufacturing processes have experienced disruptions related to scarcity of certain raw materials and interruptions in production and shipping. These disruptions have been further exacerbated by inflationary pressures, labor shortages and the impact of international conflicts/issues. Xcel EnergyNSP-Wisconsin continues to monitor the situation as it remains fluid and seeks to mitigate the impacts by securing alternative suppliers, modifying design standards, and adjusting the timing of work.
Electric Meters and Transformers
Supply chain issues associated with semi-conductors have delayed the availability of materials and has sought to mitigate impacts by seeking alternative suppliers as necessary.
Solar Resources
In April 2022, the U.S. Department of Commerce initiated an anti-circumvention investigation that would subject CSPV solar panels and cells imported from Malaysia, Vietnam, Thailand, and Cambodia with potential incremental tariffs ranging from 50% to 250%. These countries account for more than 80% of CSPV panel imports.
The uncertainty of the investigation and the adverse impact on potential tariffs has resulted in the cancellation or delay of certain domestic solar projects.
In June 2021, the PSCW approved NSP-Wisconsin’s Western Mustang solar project, a 74 megawatt facility that would be built by a developer for approximately $100 million. The project was originally scheduled to go into service in 2022.advanced infrastructure meters. As a result of delays, NSP-Wisconsin projects impacts to deployment schedules into 2025.
Additionally, the disruptionavailability of the solar supply chain, the developercertain transformers is an industry-wide issue that has indicated difficulty delivering the project at the contract pricesignificantly impacted and scheduled in-service date. Negotiations on a potential solution are on-going.
MISO Capacity Credits
The NSP System offered 1,500 MW of excess capacity into the MISO planning resource auction for June 2022 through May 2023. Duein some cases may result in delays in projects and new customer connections. Proposed governmental actions related to a projected overall capacity shortfalltransformer efficiency standards may compound these delays in the MISO region, the 1,500 MWs offered cleared the auction at maximum pricingfuture. NSP-Wisconsin continues to seek alternative suppliers and is expectedprioritize work plans to generate revenues to the NSP Systemmitigate impacts of approximately $89 million in 2022 and approximately $64 million in 2023. During the second quartersupply constraints.

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Table of 2022, the NSP System received approximately $13 million of capacity credits.Contents
NSP-Wisconsin's share of the 2022 capacity revenues is expected to be approximately $14 million. These revenues will offset fuel costs through existing fuel recovery mechanisms.
Environmental
Affordable Clean EnergyAir Act
Power Plant Greenhouse Gas RegulationsIn July 2019,May 2023, the EPA adoptedpublished proposed rules addressing control of CO2 emissions from the ACEpower sector. The rule which requires states to develop plans by 2022proposed regulations for greenhousenew natural gas reductions from coal-fired power plants. In January 2021, the U.S. Court of Appeals for the D.C. Circuit issued a decision vacating and remanding the ACE rule. That decision essentially held that EPA’s previous economy-wide regulatory approach taken in the 2015 CPP was consistent with thegenerating units under Clean Air Act. If upheld, that decision would have allowed the EPA to proceed with alternate regulationAct Section 111(b) and emission guidelines for existing coal and certain natural gas generation under Clean Air Action Section 111(d). The proposed rules create subcategories of coal-fired power plants consistent with the CPP approach. However, the Courtcoal units based on planned retirement date and subcategories of Appeals decision was appealed to the U.S Supreme Court. In a June 30, 2022, ruling, the Supreme Court held that a CPP economy-wide approachnatural gas combustion turbines and combined cycle units based on utilization. The CO2 control requirements vary by subcategory. Until final rules are issued, it is not consistent withcertain what the Clean Air Act. Thus, if EPA is to proceed with new rules, they mustimpact will be consistent with this ruling and be more similar to the ACE rule “inside the fenceline” approach. If any new rules require additional investment,on NSP-Wisconsin. NSP-Wisconsin believes that the cost of these initiatives or replacement generation would be recoverable through rates based on prior state commission practices.
Emerging Contaminants of Concern
PFAS are man-made chemicals that are widely used in consumer products and can persist and bio-accumulate in the environment. NSP-Wisconsin does not manufacture PFAS but because PFAS are so ubiquitous in products and the environment, it may impact our operations.
In September 2022, the EPA proposed to designate two types of PFAS as “hazardous substances” under the CERCLA.
In March 2023, the EPA published a proposed rule that would establish enforceable drinking water standards for certain PFAS chemicals.
NSP-Wisconsin provided comments related to both efforts described above through its regulatory coalitions. Final rules are expected in 2024. Costs are uncertain until a final rule is published.
The proposed rules could result in new obligations for investigation and cleanup. NSP-Wisconsin is monitoring changes to state laws addressing PFAS. The impact of these proposed regulations is uncertain.
ITEM 4 — CONTROLS AND PROCEDURES
Disclosure Controls and Procedures
NSP-Wisconsin maintains a set of disclosure controls and procedures designed to ensure that information required to be disclosed in reports that it files or submits under the Securities Exchange Act of 1934 is recorded, processed, summarized, and reported within the time periods specified in SEC rules and forms.
In addition, the disclosure controls and procedures ensure that information required to be disclosed is accumulated and communicated to management, including the CEO and CFO, allowing timely decisions regarding required disclosure.
As of June 30, 2022,2023, based on an evaluation carried out under the supervision and with the participation of NSP-Wisconsin’s management, including the CEO and CFO, of the effectiveness of its disclosure controls and procedures, the CEO and CFO have concluded that NSP-Wisconsin’s disclosure controls and procedures were effective.

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Internal Control Over Financial Reporting
No changes in NSP-Wisconsin’s internal control over financial reporting occurred during the most recent fiscal quarter that materially affected, or are reasonably likely to materially affect, NSP-Wisconsin’s internal control over financial reporting.
PART II — OTHER INFORMATION
ITEM 1 — LEGAL PROCEEDINGS
NSP-Wisconsin is involved in various litigation matters in the ordinary course of business. The assessment of whether a loss is probable or is a reasonable possibility, and whether the loss or a range of loss is estimable, often involves a series of complex judgments about future events. Management maintains accruals for losses probable of being incurred and subject to reasonable estimation.

Management is sometimes unable to estimate an amount or range of a reasonably possible loss in certain situations, including but not limited to, when (1) the damages sought are indeterminate, (2) the proceedings are in the early stages, or (3) the matters involve novel or unsettled legal theories. In such cases, there is considerable uncertainty regarding the timing or ultimate resolution of such matters, including a possible eventual loss.
For current proceedings not specifically reported herein, management does not anticipate that the ultimate liabilities, if any, would have a material effect on NSP-Wisconsin’s consolidated financial statements. Legal fees are generally expensed as incurred.
See Note 9 to the consolidated financial statements and Part I Item 2 for further information.

ITEM 1A — RISK FACTORS
NSP-Wisconsin's risk factors are documented in Item 1A of Part I of its Annual Report on Form 10-K for the year ended Dec. 31, 2021,2022, which is incorporated herein by reference. There have been no material changes from the risk factors previously disclosed in the Form 10-K.
ITEM 5 — OTHER INFORMATION
None of the Company’s directors or officers adopted, modified, or terminated a Rule 10b5-1 trading arrangement or a non-Rule 10b5-1 trading arrangement during the Company’s fiscal quarter ended June 30, 2023.
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ITEM 6 — EXHIBITS
* Indicates incorporation by reference
Exhibit NumberDescriptionReport or Registration StatementExhibit Reference
NSP-Wisconsin Form S-4 dated Jan. 21, 20043.01
NSP-Wisconsin Form 10-K for the year ended Dec. 31, 20183.02
4.01*
NSP-Wisconsin Form 8-K dated May 10, 20234.01
101.INSInline 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.SCHInline XBRL Schema
101.CALInline XBRL Calculation
101.DEFInline XBRL Definition
101.LABInline XBRL Label
101.PREInline XBRL Presentation
104Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)
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SIGNATURES
Pursuant to the requirements 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.
Northern States Power Company (a Wisconsin corporation)
7/28/202227/2023By:/s/ BRIAN J. VAN ABEL
Brian J. Van Abel
Executive Vice President, Chief Financial Officer
(Duly AuthorizedPrincipal Accounting Officer and Principal Financial Officer)
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