UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

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

For the quarterly period ended ~~June~~September 30, 2022

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

For the transition period from to

Name of Registrant, State of Incorporation, Address of Principal Executive Offices, Telephone Number, Commission File Number, IRS Employer Identification Number

ALLIANT ENERGY CORPORATION

(a Wisconsin Corporation)

4902 N. Biltmore Lane

Madison, Wisconsin 53718

Telephone (608) 458-3311

Commission File Number - 1-9894

IRS Employer Identification Number - 39-1380265

INTERSTATE POWER & LIGHT COMPANY

(an Iowa corporation)

Alliant Energy Tower

Cedar Rapids, Iowa 52401

Telephone (319) 786-4411

Commission File Number - 1-4117

IRS Employer Identification Number - 42-0331370

WISCONSIN POWER & LIGHT COMPANY

(a Wisconsin corporation)

4902 N. Biltmore Lane

Madison, Wisconsin 53718

Telephone (608) 458-3311

Commission File Number - 0-337

IRS Employer Identification Number - 39-0714890

This combined Form 10-Q is separately filed by Alliant Energy Corporation, Interstate Power and Light Company and Wisconsin Power and Light Company. Information contained in the Form 10-Q relating to Interstate Power and Light Company and Wisconsin Power and Light Company is filed by each such registrant on its own behalf. Each of Interstate Power and Light Company and Wisconsin Power and Light Company makes no representation as to information relating to registrants other than itself.

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

Alliant Energy Corporation, Common Stock, $0.01 Par Value, Trading Symbol LNT, Nasdaq Global Select Market

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.

Alliant Energy Corporation - Yes ☒ No ☐

Interstate Power and Light Company - Yes ☒ No ☐

Wisconsin Power and Light Company - 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).

Alliant Energy Corporation - Yes ☒ No ☐

Interstate Power and Light Company - Yes ☒ No ☐

Wisconsin Power and Light Company - 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.

Alliant Energy Corporation - Large Accelerated Filer ☒ Accelerated Filer ☐ Non-accelerated Filer ☐ Smaller Reporting Company ☐ Emerging Growth Company ☐

Interstate Power and Light Company - Large Accelerated Filer ☐ Accelerated Filer ☐ Non-accelerated Filer ☒ Smaller Reporting Company ☐ Emerging Growth Company ☐

Wisconsin Power and Light Company - Large Accelerated Filer ☐ Accelerated Filer ☐ Non-accelerated Filer ☒ Smaller 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.

Alliant Energy Corporation ☐

Interstate Power and Light Company ☐

Wisconsin Power and Light Company ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Alliant Energy Corporation - Yes ☐ No ☒

Interstate Power and Light Company - Yes ☐ No ☒

Wisconsin Power and Light Company - Yes ☐ No ☒

Number of shares outstanding of each class of common stock as of ~~June~~September 30, 2022:

Alliant Energy Corporation, Common Stock, $0.01 par value, ~~250,926,232~~ 251,021,830 shares outstanding

Interstate Power and Light Company, Common Stock, $2.50 par value, 13,370,788 shares outstanding (all outstanding shares are owned beneficially and of record by Alliant Energy Corporation)

Wisconsin Power and Light Company, Common Stock, $5 par value, 13,236,601 shares outstanding (all outstanding shares are owned beneficially and of record by Alliant Energy Corporation)

Table of Contents

TABLE OF CONTENTS


			Page
Definitions			1
Forward-looking Statements			1
Part I. Financial Information			3
Item 1. Condensed Consolidated Financial Statements (Unaudited)			3
Alliant Energy Corporation			3
Interstate Power and Light Company			6
Wisconsin Power and Light Company			9
Combined Notes to Condensed Consolidated Financial Statements			12
1. Summary of Significant Accounting Policies			12
2. Regulatory Matters			13
3. Property, Plant and Equipment			13
4 . Receivables			1413
5 . Investments			14
6 . Common Equity			14
7 . Debt			17

8 . Revenues			18
9 . Income Taxes			18
10 . Benefit Plans			19

1 1 . Derivative Instruments			20
1 2 . Fair Value Measurements			21
1 3 . Commitments and Contingencies			2324
1 4 . Segments of Business			2426
1 5 . Related Parties			2627

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations			2627
Item 3. Quantitative and Qualitative Disclosures About Market Risk			3336
Item 4. Controls and Procedures			3336
Part II. Other Information			3336
Item 1. Legal Proceedings			3336
Item 1A. Risk Factors			3336
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds			3336
Item 5. Other Information			36
Item 6. Exhibits			3437
Signatures			3437

Table of Contents

DEFINITIONS

The following abbreviations or acronyms used in this report are defined below:


Abbreviation or Acronym	Definition	Abbreviation or Acronym	Definition
2021 Form 10-K	Combined Annual Report on Form 10-K filed by Alliant Energy, IPL and WPL for the year ended Dec. 31, 2021	IPL	Interstate Power and Light Company
AEF	Alliant Energy Finance, LLC	IUB	Iowa Utilities Board
AFUDC	Allowance for funds used during construction	MDA	Management’s Discussion and Analysis of Financial Condition and Results of Operations
Alliant Energy	Alliant Energy Corporation	MISO	Midcontinent Independent System Operator, Inc.
ATC	American Transmission Company LLC	MW	Megawatt
ATC Holdings	Interest in American Transmission Company LLC and ATC Holdco LLC	MWh	Megawatt-hour
Corporate Services	Alliant Energy Corporate Services, Inc.	N/A	Not applicable
DAEC	Duane Arnold Energy Center	Note(s)	Combined Notes to Condensed Consolidated Financial Statements
Dth	Dekatherm	OPEB	Other postretirement benefits
EGU	Electric generating unit	PPA	Purchased power agreement
EPA	U.S. Environmental Protection Agency	PSCW	Public Service Commission of Wisconsin
EPS	Earnings per weighted average common share	SEC	Securities and Exchange Commission
FERC	Federal Energy Regulatory Commission	U.S.	United States of America
Financial Statements	Condensed Consolidated Financial Statements	West Riverside	West Riverside Energy Center
FTR	Financial transmission right	Whiting Petroleum	Whiting Petroleum Corporation
GAAP	U.S. generally accepted accounting principles	WPL	Wisconsin Power and Light Company

FORWARD-LOOKING STATEMENTS

Statements contained in this report that are not of historical fact are forward-looking statements intended to qualify for the safe harbors from liability established by the Private Securities Litigation Reform Act of 1995. These forward-looking statements can be identified as such because the statements include words such as “may,” “believe,” “expect,” “anticipate,” “plan,” “project,” “will,” “projections,” “estimate,” or other words of similar import. Similarly, statements that describe future financial performance or plans or strategies are forward-looking statements. Such forward-looking statements are subject to certain risks and uncertainties that could cause actual results to differ materially from those expressed in, or implied by, such statements. Some, but not all, of the risks and uncertainties of Alliant Energy, IPL and WPL that could materially affect actual results include:

•the direct or indirect effects resulting from terrorist incidents, including physical attacks and cyber attacks, or responses to such incidents;

•the impact of penalties or third-party claims related to, or in connection with, a failure to maintain the security of personally identifiable information, including associated costs to notify affected persons and to mitigate their information security concerns;

•~~the direct or indirect effects resulting from terrorist incidents, including physical attacks and cyber attacks, or responses to such incidents;~~

•the impact of customer- and third party-owned generation, including alternative electric suppliers, in IPL’s and WPL’s service territories on system reliability, operating expenses and customers’ demand for electricity;

•the impact of energy efficiency, franchise retention and customer disconnects on sales volumes and margins;

•the impact that price changes may have on IPL’s and WPL’s customers’ demand for electric, gas and steam services and their ability to pay their bills;

•inflation and higher interest rates;

•changes in the price of delivered natural gas, transmission, purchased electricity and coal, particularly during elevated market prices, and any resulting changes to counterparty credit risk, due to shifts in supply and demand caused by market conditions, regulations and MISO’s seasonal resource adequacy process;

•IPL’s and WPL’s ability to obtain adequate and timely rate relief to allow for, among other things, the recovery of and/or the return on costs, including fuel costs, operating costs, transmission costs, deferred expenditures, deferred tax assets, tax expense, capital expenditures, and remaining costs related to EGUs that may be permanently closed and certain other retired assets, decreases in sales volumes, earning their authorized rates of return, and the payments to their parent of expected levels of dividends;

•~~federal and state regulatory or governmental actions, including the impact of legislation, and regulatory agency orders;~~

•~~the ability to utilize tax credits and net operating losses generated to date, and those that may be generated in the future, before they expire;~~

•~~the impacts of changes in the tax code, including tax rates, minimum tax rates, and adjustments made to deferred tax assets and liabilities;~~

•the ability to complete construction of renewable generation and storage projects by planned in-service dates and within the cost targets set by regulators due to cost increases of and access to materials, equipment and commodities including due to tariffs, duties or other assessments, such as any additional tariffs resulting from U.S. Department of Commerce investigations into the sourcing of solar project materials and equipment from certain countries, labor issues or supply shortages, the ability to successfully resolve warranty issues or contract disputes, the ability to achieve the expected level of tax benefits based on tax guidelines and project costs, and the ability to efficiently utilize the renewable generation and storage project tax benefits for the benefit of customers;

•~~employee workforce factors,~~federal and state regulatory or governmental actions, including ~~changes in key executives, ability to hire~~the impact of legislation, and ~~retain employees with specialized skills, ability to create desired corporate culture, collective bargaining agreements and negotiations, work stoppages or restructurings;~~regulatory agency orders;

•~~inflation~~the ability to utilize tax credits and ~~higher interest rates;~~net operating losses generated to date, and those that may be generated in the future, before they expire, as well as the ability to transfer tax credits that may be generated in the future at adequate pricing;

•the impacts of changes in the tax code, including tax rates, minimum tax rates, and adjustments made to deferred tax assets and liabilities;


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Table of Contents

•employee workforce factors, including the ability to hire and retain employees with specialized skills, impacts from employee retirements, changes in key executives, ability to create desired corporate culture, collective bargaining agreements and negotiations, work stoppages or restructurings;

•disruptions in the ~~price~~supply and delivery of ~~delivered~~ natural gas, ~~transmission,~~ purchased electricity and coal, particularly during elevated market prices, and any resulting changes to counterparty credit risk, due to shifts in supply and demand caused by market conditions, regulations and MISO’s annual resource adequacy process;coal;

•changes to the creditworthiness of, or performance of obligations by, counterparties with which Alliant Energy, IPL and WPL have contractual arrangements, including participants in the energy markets and fuel suppliers and transporters;

•any material post-closing payments related to any past asset divestitures, including the sale of Whiting Petroleum, which could result from, among other things, indemnification agreements, warranties, guarantees or litigation;

•weather effects on results of utility operations;

•disruptions to ongoing operations and the supply of materials, services, equipment and commodities needed to construct solar generation, battery storage and electric and gas distribution projects, which may result from geopolitical issues, supplier manufacturing constraints, labor issues or transportation issues, as well as affect the ability to meet capacity requirements and result in increased capacity expense;

•continued access to the capital markets on competitive terms and rates, and the actions of credit rating agencies;

•the direct or indirect effects resulting from the ongoing novel coronavirus (COVID-19) pandemic and the spread of variant strains, including any vaccine mandates and testing requirements, on sales volumes, margins, operations, employees, labor markets, contractors, vendors, the ability to complete construction projects, supply chains, customers’ inability to pay bills, suspension of disconnects, the market value of the assets that fund pension plans and the potential for additional funding requirements, the ability of counterparties to meet their obligations, compliance with regulatory requirements, the ability to implement regulatory plans, economic conditions and access to capital markets;strains;

•issues associated with environmental remediation and environmental compliance, including compliance with all environmental and emissions permits, the Coal Combustion Residuals Rule, future changes in environmental laws and regulations, including federal, state or local regulations for carbon dioxide emissions reductions from new and existing fossil-fueled EGUs, and litigation associated with environmental requirements;

•increased pressure from customers, investors and other stakeholders to more rapidly reduce carbon dioxide emissions;

•the ability to defend against environmental claims brought by state and federal agencies, such as the EPA, state natural resources agencies or third parties, such as the Sierra Club, and the impact on operating expenses of defending and resolving such claims;

•~~continued access to the capital markets on competitive terms and rates, and the actions of credit rating agencies;~~

•~~possible~~ changes to MISO’s methodology establishing capacity planning reserve margin and capacity accreditation requirements that may impact how and when new generating facilities such as IPL’s and WPL’s additional solar generation may be accredited with energy capacity and may require IPL and WPL to adjust their current resource plans, the need to add resources to comply with MISO’s ~~proposal,~~methodology, or procure capacity in the market whereby such costs might not be recovered in rates;

•~~disruptions in the supply and delivery of natural gas, purchased electricity and coal;~~

•the direct or indirect effects resulting from breakdown or failure of equipment in the operation of electric and gas distribution systems, such as mechanical problems and explosions or fires, and compliance with electric and gas transmission and distribution safety regulations, including regulations promulgated by the Pipeline and Hazardous Materials Safety Administration;

•issues related to the availability and operations of EGUs, including start-up risks, breakdown or failure of equipment, availability of warranty coverage for equipment breakdowns or failures, performance below expected or contracted levels of output or efficiency, operator error, employee safety, transmission constraints, compliance with mandatory reliability standards and risks related to recovery of resulting incremental operating, fuel-related and capital costs through rates;

•impacts that excessive heat, excessive cold, storms or natural disasters may have on Alliant Energy’s, IPL’s and WPL’s operations and recovery of costs associated with restoration activities or on the operations of Alliant Energy’s investments;

•Alliant Energy’s ability to sustain its dividend payout ratio goal;

•changes to costs of providing benefits and related funding requirements of pension and OPEB plans due to the market value of the assets that fund the plans, economic conditions, financial market performance, interest rates, timing and form of benefits payments, life expectancies and demographics;

•material changes in employee-related benefit and compensation costs, including settlement losses related to pension plans;

•risks associated with operation and ownership of non-utility holdings;

•changes in technology that alter the channels through which customers buy or utilize Alliant Energy’s, IPL’s or WPL’s products and services;

•impacts on equity income from unconsolidated investments from changes in valuations ~~and~~of the assets held, as well as potential changes to ATC’s authorized return on equity;

•impacts of IPL’s future tax benefits from Iowa rate-making practices, including deductions for repairs expenditures, allocation of mixed service costs and state depreciation, and recoverability of the associated regulatory assets from customers, when the differences reverse in future periods;

•current or future litigation, regulatory investigations, proceedings or inquiries;

•reputational damage from negative publicity, protests, fines, penalties and other negative consequences resulting in regulatory and/or legal actions;

•the effect of accounting standards issued periodically by standard-setting bodies;

•the ability to successfully complete tax audits and changes in tax accounting methods with no material impact on earnings and cash flows; and

•other factors listed in MDA and Risk Factors in Item 1A in the 2021 Form 10-K.

Alliant Energy, IPL and WPL each assume no obligation, and disclaim any duty, to update the forward-looking statements in this report, except as required by law.


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PART I. FINANCIAL INFORMATION

ITEM 1. CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

ALLIANT ENERGY CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)


		For the Three Months		For the Six Months			For the Three Months		For the Nine Months
		Ended June 30,		Ended June 30,			Ended September 30,		Ended September 30,
		2022	2021	2022	2021		2022	2021	2022	2021
		(in millions, except per share amounts)					(in millions, except per share amounts)
Revenues:	Revenues:					Revenues:
Electric utility	Electric utility	$812	$717	$1,586	$1,418	Electric utility	$1,039	$939	$2,624	$2,357
Gas utility	Gas utility	94	69	356	239	Gas utility	62	50	418	289
Other utility	Other utility	13	10	23	23	Other utility	11	13	35	36
Non-utility	Non-utility	24	21	47	38	Non-utility	23	22	70	60
Total revenues	Total revenues	943	817	2,012	1,718	Total revenues	1,135	1,024	3,147	2,742
Operating expenses:	Operating expenses:					Operating expenses:
Electric production fuel and purchased power	Electric production fuel and purchased power	191	138	359	271	Electric production fuel and purchased power	274	207	633	478
Electric transmission service	Electric transmission service	133	121	271	255	Electric transmission service	157	148	428	403
Cost of gas sold	Cost of gas sold	48	31	216	131	Cost of gas sold	26	18	242	149
Other operation and maintenance	Other operation and maintenance	166	160	320	306	Other operation and maintenance	172	171	492	477
Depreciation and amortization	Depreciation and amortization	166	165	332	329	Depreciation and amortization	169	165	501	494
Taxes other than income taxes	Taxes other than income taxes	27	26	54	52	Taxes other than income taxes	28	26	82	78
Total operating expenses	Total operating expenses	731	641	1,552	1,344	Total operating expenses	826	735	2,378	2,079
Operating income	Operating income	212	176	460	374	Operating income	309	289	769	663
Other (income) and deductions:	Other (income) and deductions:					Other (income) and deductions:
Interest expense	Interest expense	78	69	152	138	Interest expense	83	68	235	206
Equity income from unconsolidated investments, net	Equity income from unconsolidated investments, net	(16)	(19)	(32)	(34)	Equity income from unconsolidated investments, net	(5)	(13)	(37)	(47)
Allowance for funds used during construction	Allowance for funds used during construction	(13)	(5)	(24)	(9)	Allowance for funds used during construction	(10)	(7)	(34)	(16)
Other	Other	—	2	1	4	Other	—	3	—	7
Total other (income) and deductions	Total other (income) and deductions	49	47	97	99	Total other (income) and deductions	68	51	164	150
Income before income taxes	Income before income taxes	163	129	363	275	Income before income taxes	241	238	605	513
Income tax expense (benefit)	Income tax expense (benefit)	4	(17)	12	(45)	Income tax expense (benefit)	14	(21)	26	(66)

Net income	Net income	159	146	351	320	Net income	227	259	579	579
Preferred dividend requirements of Interstate Power and Light Company	Preferred dividend requirements of Interstate Power and Light Company	—	2	—	5	Preferred dividend requirements of Interstate Power and Light Company	—	3	—	8
Net income attributable to Alliant Energy common shareowners	Net income attributable to Alliant Energy common shareowners	$159	$144	$351	$315	Net income attributable to Alliant Energy common shareowners	$227	$256	$579	$571
Weighted average number of common shares outstanding:	Weighted average number of common shares outstanding:					Weighted average number of common shares outstanding:
Basic	Basic	250.9	250.2	250.7	250.1	Basic	251.0	250.3	250.8	250.2
Diluted	Diluted	251.1	250.6	251.0	250.5	Diluted	251.3	250.8	251.1	250.6
Earnings per weighted average common share attributable to Alliant Energy common shareowners:
Basic		$0.63	$0.58	$1.40	$1.26
Diluted		$0.63	$0.57	$1.40	$1.26

Earnings per weighted average common share attributable to Alliant Energy common shareowners (basic and diluted)						Earnings per weighted average common share attributable to Alliant Energy common shareowners (basic and diluted)	$0.90	$1.02	$2.31	$2.28

Refer to accompanying Combined Notes to Condensed Consolidated Financial Statements.


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ALLIANT ENERGY CORPORATION

CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)


		June 30, 2022	December 31, 2021		September 30, 2022	December 31, 2021
		(in millions, except per share and share amounts)			(in millions, except per share and share amounts)
ASSETS	ASSETS			ASSETS
Current assets:	Current assets:			Current assets:
Cash and cash equivalents	Cash and cash equivalents	$19	$39	Cash and cash equivalents	$344	$39
Accounts receivable, less allowance for expected credit losses	Accounts receivable, less allowance for expected credit losses	490	440	Accounts receivable, less allowance for expected credit losses	509	440

Production fuel, at weighted average cost	Production fuel, at weighted average cost	55	51	Production fuel, at weighted average cost	49	51
Gas stored underground, at weighted average cost	Gas stored underground, at weighted average cost	64	82	Gas stored underground, at weighted average cost	124	82
Materials and supplies, at weighted average cost	Materials and supplies, at weighted average cost	121	113	Materials and supplies, at weighted average cost	126	113
Regulatory assets	Regulatory assets	188	104	Regulatory assets	177	104

Other	Other	371	240	Other	364	240
Total current assets ~~(a)~~	Total current assets ~~(a)~~	1,308	1,069	Total current assets ~~(a)~~	1,693	1,069
Property, plant and equipment, net ~~(a)~~	Property, plant and equipment, net ~~(a)~~	15,453	14,987	Property, plant and equipment, net ~~(a)~~	15,858	14,987
Investments:	Investments:			Investments:
ATC Holdings	ATC Holdings	351	338	ATC Holdings	351	338
Other	Other	195	179	Other	200	179
Total investments	Total investments	546	517	Total investments	551	517
Other assets:	Other assets:			Other assets:
Regulatory assets	Regulatory assets	1,863	1,836	Regulatory assets	1,864	1,836
Deferred charges and other	Deferred charges and other	221	144	Deferred charges and other	239	144
Total other assets	Total other assets	2,084	1,980	Total other assets	2,103	1,980
Total assets	Total assets	$19,391	$18,553	Total assets	$20,205	$18,553

LIABILITIES AND EQUITY
Current liabilities:
Current maturities of long-term debt $733 $633
Commercial paper 399 515
Accounts payable 584 436
Accrued taxes 58 58
Regulatory liabilities 218 186
Other 284 226
Total current liabilities 2,276 2,054
Long-term debt, net (excluding current portion) 6,981 6,735
Other liabilities:
Deferred tax liabilities 1,971 1,927
Regulatory liabilities 1,145 1,085
Pension and other benefit obligations 356 374
Other 496 388
Total other liabilities (a) 3,968 3,774
Commitments and contingencies (Note 1 3)
0 0
Equity:
Alliant Energy Corporation common equity:
Common stock - $0.01 par value - 480,000,000 shares authorized; 250,926,232 and 250,474,529 shares outstanding 3 3
Additional paid-in capital 2,759 2,749
Retained earnings 3,387 3,250
Shares in deferred compensation trust - 388,363 and 383,532 shares at a weighted average cost of $31.72 and $30.59 per share (12) (12)
Total Alliant Energy Corporation common equity 6,137 5,990
Noncontrolling interest 29 —
Total equity 6,166 5,990
Total liabilities and equity $19,391 $18,553

~~(a)~~As of June 30, 2022, Alliant Energy’s assets of a consolidated VIE that may be used only to settle obligations of that VIE include $1 million of current assets and $428 million of property, plant and equipment, net, and Alliant Energy’s liabilities of that VIE that creditors do not have recourse to include $8 million of other liabilities. Refer to ~~Note 1(b)~~ ~~for additional information.~~


LIABILITIES AND EQUITY
Current liabilities:
Current maturities of long-term debt	$658	$633
Commercial paper	383	515

Accounts payable	786	436
Accrued taxes	86	58
Regulatory liabilities	229	186
Other	280	226
Total current liabilities	2,422	2,054
Long-term debt, net (excluding current portion)	7,570	6,735
Other liabilities:
Deferred tax liabilities	1,919	1,927
Regulatory liabilities	1,158	1,085
Pension and other benefit obligations	349	374
Other	522	388
Total other liabilities	3,948	3,774
Commitments and contingencies (Note 1 3)
Equity:
Alliant Energy Corporation common equity:
Common stock - $0.01 par value - 480,000,000 shares authorized; 251,021,830 and 250,474,529 shares outstanding	3	3
Additional paid-in capital	2,767	2,749
Retained earnings	3,508	3,250

Shares in deferred compensation trust - 395,224 and 383,532 shares at a weighted average cost of $32.23 and $30.59 per share	(13)	(12)
Total Alliant Energy Corporation common equity	6,265	5,990



Total liabilities and equity	$20,205	$18,553

Refer to accompanying Combined Notes to Condensed Consolidated Financial Statements.


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ALLIANT ENERGY CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)


		For the Six Months			For the Nine Months
		Ended June 30,			Ended September 30,
		2022	2021		2022	2021
		(in millions)			(in millions)
Cash flows from operating activities:	Cash flows from operating activities:			Cash flows from operating activities:
Net income	Net income	$351	$320	Net income	$579	$579
Adjustments to reconcile net income to net cash flows from operating activities:	Adjustments to reconcile net income to net cash flows from operating activities:			Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	Depreciation and amortization	332	329	Depreciation and amortization	501	494
Deferred tax expense (benefit) and tax credits	Deferred tax expense (benefit) and tax credits	12	(42)	Deferred tax expense (benefit) and tax credits	8	(69)

Other	Other	(16)	2	Other	(8)	7
Other changes in assets and liabilities:	Other changes in assets and liabilities:			Other changes in assets and liabilities:
Accounts receivable	Accounts receivable	(283)	(265)	Accounts receivable	(425)	(397)

Derivative assets	Derivative assets	(183)	(68)	Derivative assets	(184)	(202)
Regulatory assets	Regulatory assets	(116)	4	Regulatory assets	(102)	(21)
Accounts payable	Accounts payable	95	11	Accounts payable	90	—
Derivative liabilities				Derivative liabilities	89	(21)
Regulatory liabilities	Regulatory liabilities	74	(69)	Regulatory liabilities	89	25
Derivative liabilities		86	(22)
Deferred income taxes	Deferred income taxes	34	93	Deferred income taxes	(15)	160
Pension and other benefit obligations	Pension and other benefit obligations	(18)	(34)	Pension and other benefit obligations	(25)	(59)
Other	Other	(68)	(52)	Other	(112)	(19)
Net cash flows from operating activities	Net cash flows from operating activities	300	207	Net cash flows from operating activities	485	477
Cash flows used for investing activities:	Cash flows used for investing activities:			Cash flows used for investing activities:
Construction and acquisition expenditures:	Construction and acquisition expenditures:			Construction and acquisition expenditures:
Utility business	Utility business	(550)	(426)	Utility business	(873)	(772)
Other	Other	(43)	(32)	Other	(69)	(60)
Cash receipts on sold receivables	Cash receipts on sold receivables	233	295	Cash receipts on sold receivables	358	423
Other	Other	(10)	(27)	Other	(15)	(43)
Net cash flows used for investing activities	Net cash flows used for investing activities	(370)	(190)	Net cash flows used for investing activities	(599)	(452)
Cash flows from (used for) financing activities:	Cash flows from (used for) financing activities:			Cash flows from (used for) financing activities:
Common stock dividends	Common stock dividends	(215)	(203)	Common stock dividends	(322)	(304)

Proceeds from issuance of long-term debt	Proceeds from issuance of long-term debt	650	—	Proceeds from issuance of long-term debt	1,238	300
Payments to retire long-term debt	Payments to retire long-term debt	(304)	(4)	Payments to retire long-term debt	(379)	(4)
Net change in commercial paper	Net change in commercial paper	(116)	146	Net change in commercial paper	(132)	(73)
Contributions from noncontrolling interest	Contributions from noncontrolling interest	29	—	Contributions from noncontrolling interest	29	—

Distributions to noncontrolling interest				Distributions to noncontrolling interest	(29)	—
Other	Other	6	4	Other	16	24
Net cash flows from (used for) financing activities	Net cash flows from (used for) financing activities	50	(57)	Net cash flows from (used for) financing activities	421	(57)
Net decrease in cash, cash equivalents and restricted cash		(20)	(40)
Net increase (decrease) in cash, cash equivalents and restricted cash				Net increase (decrease) in cash, cash equivalents and restricted cash	307	(32)
Cash, cash equivalents and restricted cash at beginning of period	Cash, cash equivalents and restricted cash at beginning of period	40	56	Cash, cash equivalents and restricted cash at beginning of period	40	56
Cash, cash equivalents and restricted cash at end of period	Cash, cash equivalents and restricted cash at end of period	$20	$16	Cash, cash equivalents and restricted cash at end of period	$347	$24
Supplemental cash flows information:	Supplemental cash flows information:			Supplemental cash flows information:
Cash paid during the period for:	Cash paid during the period for:			Cash paid during the period for:
Interest	Interest	($146)	($137)	Interest	($220)	($197)
Income taxes, net	Income taxes, net	($4)	($1)	Income taxes, net	($7)	($1)
Significant non-cash investing and financing activities:	Significant non-cash investing and financing activities:			Significant non-cash investing and financing activities:
Accrued capital expenditures	Accrued capital expenditures	$200	$139	Accrued capital expenditures	$403	$91
Beneficial interest obtained in exchange for securitized accounts receivable	Beneficial interest obtained in exchange for securitized accounts receivable	$244	$154	Beneficial interest obtained in exchange for securitized accounts receivable	$248	$164

Refer to accompanying Combined Notes to Condensed Consolidated Financial Statements.


			5

Table of Contents

INTERSTATE POWER AND LIGHT COMPANY

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)


		For the Three Months		For the Six Months			For the Three Months		For the Nine Months
		Ended June 30,		Ended June 30,			Ended September 30,		Ended September 30,
		2022	2021	2022	2021		2022	2021	2022	2021
		(in millions)					(in millions)
Revenues:	Revenues:					Revenues:
Electric utility	Electric utility	$442	$402	$843	$788	Electric utility	$596	$555	$1,438	$1,343
Gas utility	Gas utility	52	43	191	134	Gas utility	33	31	224	165
Steam and other	Steam and other	12	10	22	22	Steam and other	11	13	34	35
Total revenues	Total revenues	506	455	1,056	944	Total revenues	640	599	1,696	1,543
Operating expenses:	Operating expenses:					Operating expenses:
Electric production fuel and purchased power	Electric production fuel and purchased power	83	55	150	114	Electric production fuel and purchased power	140	101	290	215
Electric transmission service	Electric transmission service	91	79	188	171	Electric transmission service	115	103	303	274
Cost of gas sold	Cost of gas sold	27	22	112	72	Cost of gas sold	14	12	126	84
Other operation and maintenance	Other operation and maintenance	87	81	171	158	Other operation and maintenance	90	95	260	253
Depreciation and amortization	Depreciation and amortization	95	93	189	187	Depreciation and amortization	95	94	285	281
Taxes other than income taxes	Taxes other than income taxes	14	14	28	28	Taxes other than income taxes	15	14	43	42
Total operating expenses	Total operating expenses	397	344	838	730	Total operating expenses	469	419	1,307	1,149
Operating income	Operating income	109	111	218	214	Operating income	171	180	389	394
Other (income) and deductions:	Other (income) and deductions:					Other (income) and deductions:
Interest expense	Interest expense	37	34	74	69	Interest expense	37	34	111	103
Allowance for funds used during construction	Allowance for funds used during construction	(3)	(3)	(5)	(5)	Allowance for funds used during construction	(3)	(2)	(8)	(7)
Other	Other	—	2	(1)	2	Other	(1)	—	(2)	2
Total other (income) and deductions	Total other (income) and deductions	34	33	68	66	Total other (income) and deductions	33	32	101	98
Income before income taxes	Income before income taxes	75	78	150	148	Income before income taxes	138	148	288	296
Income tax benefit	Income tax benefit	(12)	(10)	(23)	(22)	Income tax benefit	(16)	(12)	(39)	(34)
Net income	Net income	87	88	173	170	Net income	154	160	327	330
Preferred dividend requirements	Preferred dividend requirements	—	2	—	5	Preferred dividend requirements	—	3	—	8
Net income available for common stock	Net income available for common stock	$87	$86	$173	$165	Net income available for common stock	$154	$157	$327	$322

Earnings per share data is not disclosed given Alliant Energy Corporation is the sole shareowner of all shares of IPL’s common stock outstanding during the periods presented.

Refer to accompanying Combined Notes to Condensed Consolidated Financial Statements.


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Table of Contents

INTERSTATE POWER AND LIGHT COMPANY

CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)


		June 30, 2022	December 31, 2021		September 30, 2022	December 31, 2021
		(in millions, except per share and share amounts)			(in millions, except per share and share amounts)
ASSETS	ASSETS			ASSETS
Current assets:	Current assets:			Current assets:
Cash and cash equivalents	Cash and cash equivalents	$13	$34	Cash and cash equivalents	$45	$34
Accounts receivable, less allowance for expected credit losses	Accounts receivable, less allowance for expected credit losses	269	241	Accounts receivable, less allowance for expected credit losses	286	241
Income tax refunds receivable	Income tax refunds receivable	8	8	Income tax refunds receivable	1	8
Production fuel, at weighted average cost	Production fuel, at weighted average cost	37	29	Production fuel, at weighted average cost	31	29
Gas stored underground, at weighted average cost	Gas stored underground, at weighted average cost	27	40	Gas stored underground, at weighted average cost	66	40
Materials and supplies, at weighted average cost	Materials and supplies, at weighted average cost	73	70	Materials and supplies, at weighted average cost	77	70
Regulatory assets	Regulatory assets	111	73	Regulatory assets	108	73
Other	Other	149	69	Other	134	69
Total current assets	Total current assets	687	564	Total current assets	748	564
Property, plant and equipment, net	Property, plant and equipment, net	7,997	7,983	Property, plant and equipment, net	8,013	7,983
Other assets:	Other assets:			Other assets:
Regulatory assets	Regulatory assets	1,379	1,370	Regulatory assets	1,315	1,370
Deferred charges and other	Deferred charges and other	121	79	Deferred charges and other	132	79
Total other assets	Total other assets	1,500	1,449	Total other assets	1,447	1,449
Total assets	Total assets	$10,184	$9,996	Total assets	$10,208	$9,996


LIABILITIES AND EQUITY	LIABILITIES AND EQUITY			LIABILITIES AND EQUITY
Current liabilities:	Current liabilities:			Current liabilities:

Accounts payable	Accounts payable	$225	$173	Accounts payable	$232	$173
Accounts payable to associated companies	Accounts payable to associated companies	37	39	Accounts payable to associated companies	37	39
Regulatory liabilities	Regulatory liabilities	100	84	Regulatory liabilities	105	84
Accrued taxes	Accrued taxes	51	56	Accrued taxes	69	56
Accrued interest	Accrued interest	35	36	Accrued interest	35	36
Other	Other	115	67	Other	112	67
Total current liabilities	Total current liabilities	563	455	Total current liabilities	590	455
Long-term debt, net	Long-term debt, net	3,645	3,643	Long-term debt, net	3,645	3,643
Other liabilities:	Other liabilities:			Other liabilities:
Deferred tax liabilities	Deferred tax liabilities	1,106	1,083	Deferred tax liabilities	1,029	1,083
Regulatory liabilities	Regulatory liabilities	651	607	Regulatory liabilities	656	607
Pension and other benefit obligations	Pension and other benefit obligations	121	127	Pension and other benefit obligations	118	127
Other	Other	316	312	Other	314	312
Total other liabilities	Total other liabilities	2,194	2,129	Total other liabilities	2,117	2,129
Commitments and contingencies (Note 1 3)	Commitments and contingencies (Note 1 3)	0	0	Commitments and contingencies (Note 1 3)
Equity:	Equity:			Equity:
Interstate Power and Light Company common equity:	Interstate Power and Light Company common equity:			Interstate Power and Light Company common equity:
Common stock - $2.50 par value - 24,000,000 shares authorized; 13,370,788 shares outstanding	Common stock - $2.50 par value - 24,000,000 shares authorized; 13,370,788 shares outstanding	33	33	Common stock - $2.50 par value - 24,000,000 shares authorized; 13,370,788 shares outstanding	33	33
Additional paid-in capital	Additional paid-in capital	2,807	2,807	Additional paid-in capital	2,807	2,807
Retained earnings	Retained earnings	942	929	Retained earnings	1,016	929
Total Interstate Power and Light Company common equity	Total Interstate Power and Light Company common equity	3,782	3,769	Total Interstate Power and Light Company common equity	3,856	3,769

Total liabilities and equity	Total liabilities and equity	$10,184	$9,996	Total liabilities and equity	$10,208	$9,996

Refer to accompanying Combined Notes to Condensed Consolidated Financial Statements.


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Table of Contents

INTERSTATE POWER AND LIGHT COMPANY

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)


		For the Six Months			For the Nine Months
		Ended June 30,			Ended September 30,
		2022	2021		2022	2021
		(in millions)			(in millions)
Cash flows from operating activities:	Cash flows from operating activities:			Cash flows from operating activities:
Net income	Net income	$173	$170	Net income	$327	$330
Adjustments to reconcile net income to net cash flows from operating activities:	Adjustments to reconcile net income to net cash flows from operating activities:			Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	Depreciation and amortization	189	187	Depreciation and amortization	285	281

Deferred tax benefit and tax credits				Deferred tax benefit and tax credits	(24)	(13)
Other	Other	(9)	(13)	Other	(8)	(1)
Other changes in assets and liabilities:	Other changes in assets and liabilities:			Other changes in assets and liabilities:
Accounts receivable	Accounts receivable	(256)	(270)	Accounts receivable	(397)	(412)

Derivative assets	Derivative assets	(123)	(27)	Derivative assets	(118)	(86)
Regulatory assets	Regulatory assets	(52)	(14)	Regulatory assets	18	(33)
Accounts payable	Accounts payable	67	1	Accounts payable	71	5
Derivative liabilities				Derivative liabilities	62	(9)
Regulatory liabilities	Regulatory liabilities	53	(36)	Regulatory liabilities	61	30

Derivative liabilities		63	(11)
Deferred income taxes	Deferred income taxes	24	30	Deferred income taxes	(30)	56

Pension and other benefit obligations				Pension and other benefit obligations	(9)	(25)
Other	Other	(46)	1	Other	(72)	(28)
Net cash flows from operating activities	Net cash flows from operating activities	83	18	Net cash flows from operating activities	166	95
Cash flows from investing activities:	Cash flows from investing activities:			Cash flows from investing activities:
Construction and acquisition expenditures	Construction and acquisition expenditures	(172)	(191)	Construction and acquisition expenditures	(269)	(285)
Cash receipts on sold receivables	Cash receipts on sold receivables	233	295	Cash receipts on sold receivables	358	423
Other	Other	(1)	(6)	Other	(5)	(16)
Net cash flows from investing activities	Net cash flows from investing activities	60	98	Net cash flows from investing activities	84	122
Cash flows used for financing activities:	Cash flows used for financing activities:			Cash flows used for financing activities:
Common stock dividends	Common stock dividends	(160)	(200)	Common stock dividends	(240)	(301)
Capital contributions from parent	Capital contributions from parent	—	50	Capital contributions from parent	—	50

Other	Other	(4)	(5)	Other	1	(3)
Net cash flows used for financing activities	Net cash flows used for financing activities	(164)	(155)	Net cash flows used for financing activities	(239)	(254)
Net decrease in cash, cash equivalents and restricted cash		(21)	(39)
Net increase (decrease) in cash, cash equivalents and restricted cash				Net increase (decrease) in cash, cash equivalents and restricted cash	11	(37)
Cash, cash equivalents and restricted cash at beginning of period	Cash, cash equivalents and restricted cash at beginning of period	34	50	Cash, cash equivalents and restricted cash at beginning of period	34	50
Cash, cash equivalents and restricted cash at end of period	Cash, cash equivalents and restricted cash at end of period	$13	$11	Cash, cash equivalents and restricted cash at end of period	$45	$13
Supplemental cash flows information:	Supplemental cash flows information:			Supplemental cash flows information:
Cash (paid) refunded during the period for:	Cash (paid) refunded during the period for:			Cash (paid) refunded during the period for:
Interest	Interest	($74)	($69)	Interest	($111)	($106)
Income taxes, net	Income taxes, net	$19	$27	Income taxes, net	$33	$28
Significant non-cash investing and financing activities:	Significant non-cash investing and financing activities:			Significant non-cash investing and financing activities:
Accrued capital expenditures	Accrued capital expenditures	$45	$32	Accrued capital expenditures	$43	$30
Beneficial interest obtained in exchange for securitized accounts receivable	Beneficial interest obtained in exchange for securitized accounts receivable	$244	$154	Beneficial interest obtained in exchange for securitized accounts receivable	$248	$164

Refer to accompanying Combined Notes to Condensed Consolidated Financial Statements.


			8

Table of Contents

WISCONSIN POWER AND LIGHT COMPANY

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)


		For the Three Months		For the Six Months			For the Three Months		For the Nine Months
		Ended June 30,		Ended June 30,			Ended September 30,		Ended September 30,
		2022	2021	2022	2021		2022	2021	2022	2021
		(in millions)					(in millions)
Revenues:	Revenues:					Revenues:
Electric utility	Electric utility	$370	$315	$743	$630	Electric utility	$443	$384	$1,186	$1,014
Gas utility	Gas utility	42	26	165	105	Gas utility	29	19	194	124
Other	Other	1	—	1	1	Other	—	—	1	1
Total revenues	Total revenues	413	341	909	736	Total revenues	472	403	1,381	1,139
Operating expenses:	Operating expenses:					Operating expenses:
Electric production fuel and purchased power	Electric production fuel and purchased power	108	84	209	158	Electric production fuel and purchased power	134	105	343	263
Electric transmission service	Electric transmission service	41	42	83	84	Electric transmission service	42	44	125	128
Cost of gas sold	Cost of gas sold	21	9	104	59	Cost of gas sold	13	6	117	65
Other operation and maintenance	Other operation and maintenance	67	69	123	128	Other operation and maintenance	70	66	193	194
Depreciation and amortization	Depreciation and amortization	69	70	139	139	Depreciation and amortization	71	70	211	209
Taxes other than income taxes	Taxes other than income taxes	12	12	24	23	Taxes other than income taxes	11	12	35	35
Total operating expenses	Total operating expenses	318	286	682	591	Total operating expenses	341	303	1,024	894
Operating income	Operating income	95	55	227	145	Operating income	131	100	357	245
Other (income) and deductions:	Other (income) and deductions:					Other (income) and deductions:
Interest expense	Interest expense	28	26	55	52	Interest expense	31	25	86	77

Allowance for funds used during construction	Allowance for funds used during construction	(10)	(2)	(18)	(4)	Allowance for funds used during construction	(7)	(5)	(26)	(9)
Other	Other	—	—	—	1	Other	—	2	—	3
Total other (income) and deductions	Total other (income) and deductions	18	24	37	49	Total other (income) and deductions	24	22	60	71
Income before income taxes	Income before income taxes	77	31	190	96	Income before income taxes	107	78	297	174
Income tax expense (benefit)	Income tax expense (benefit)	14	(7)	34	(26)	Income tax expense (benefit)	16	(15)	50	(41)
Net income	Net income	$63	$38	$156	$122	Net income	$91	$93	$247	$215

Earnings per share data is not disclosed given Alliant Energy Corporation is the sole shareowner of all shares of WPL’s common stock outstanding during the periods presented.

Refer to accompanying Combined Notes to Condensed Consolidated Financial Statements.


			9

Table of Contents

WISCONSIN POWER AND LIGHT COMPANY

CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)

June 30,
2022 December 31,
2021
(in millions, except per
share and share amounts)
ASSETS
Current assets:
Cash and cash equivalents $4 $2
Accounts receivable, less allowance for expected credit losses 208 188
Production fuel, at weighted average cost 18 23
Gas stored underground, at weighted average cost 37 42
Materials and supplies, at weighted average cost 46 41
Regulatory assets 77 31
Prepaid gross receipts tax 40 40
Other 113 86
Total current assets (a) 543 453
Property, plant and equipment, net (a) 6,985 6,538
Other assets:
Regulatory assets 484 466
Deferred charges and other 106 61
Total other assets 590 527
Total assets $8,118 $7,518
LIABILITIES AND EQUITY
Current liabilities:
Current maturities of long-term debt $250 $250
Commercial paper 222 236
Accounts payable 300 190
Accounts payable to associated companies 20 39
Regulatory liabilities 118 102
Other 99 73
Total current liabilities 1,009 890
Long-term debt, net (excluding current portion) 2,180 2,179
Other liabilities:
Deferred tax liabilities 774 753
Regulatory liabilities 494 478
Pension and other benefit obligations 151 159
Other 327 236
Total other liabilities (a) 1,746 1,626
Commitments and contingencies (Note 1 3)
0 0
Equity:
Wisconsin Power and Light Company common equity:
Common stock - $5 par value - 18,000,000 shares authorized; 13,236,601 shares outstanding 66 66
Additional paid-in capital 1,968 1,704
Retained earnings 1,120 1,053
Total Wisconsin Power and Light Company common equity 3,154 2,823
Noncontrolling interest 29 —
Total equity 3,183 2,823
Total liabilities and equity $8,118 $7,518

~~(a)~~As of June 30, 2022, WPL’s assets of a consolidated VIE that may be used only to settle obligations of that VIE include $1 million of current assets and $428 million of property, plant and equipment, net, and WPL’s liabilities of that VIE that creditors do not have recourse to include $8 million of other liabilities. Refer to ~~Note 1(b)~~ ~~for additional information.~~


	September 30, 2022	December 31, 2021
	(in millions, except per share and share amounts)
ASSETS
Current assets:
Cash and cash equivalents	$299	$2
Accounts receivable, less allowance for expected credit losses	211	188
Production fuel, at weighted average cost	18	23
Gas stored underground, at weighted average cost	58	42
Materials and supplies, at weighted average cost	47	41
Regulatory assets	69	31
Prepaid gross receipts tax	31	40
Other	130	86
Total current assets	863	453
Property, plant and equipment, net	7,371	6,538
Other assets:
Regulatory assets	549	466
Deferred charges and other	115	61
Total other assets	664	527
Total assets	$8,898	$7,518


LIABILITIES AND EQUITY
Current liabilities:
Current maturities of long-term debt	$250	$250
Commercial paper	—	236

Accounts payable	470	190
Accounts payable to associated companies	51	39
Regulatory liabilities	124	102
Other	93	73
Total current liabilities	988	890
Long-term debt, net (excluding current portion)	2,769	2,179
Other liabilities:
Deferred tax liabilities	783	753
Regulatory liabilities	502	478

Pension and other benefit obligations	148	159
Other	352	236
Total other liabilities	1,785	1,626
Commitments and contingencies (Note 1 3)
Equity:
Wisconsin Power and Light Company common equity:
Common stock - $5 par value - 18,000,000 shares authorized; 13,236,601 shares outstanding	66	66
Additional paid-in capital	2,123	1,704
Retained earnings	1,167	1,053
Total Wisconsin Power and Light Company common equity	3,356	2,823


Total liabilities and equity	$8,898	$7,518

Refer to accompanying Combined Notes to Condensed Consolidated Financial Statements.


			10

Table of Contents

WISCONSIN POWER AND LIGHT COMPANY

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)


		For the Six Months			For the Nine Months
		Ended June 30,			Ended September 30,
		2022	2021		2022	2021
		(in millions)			(in millions)
Cash flows from operating activities:	Cash flows from operating activities:			Cash flows from operating activities:
Net income	Net income	$156	$122	Net income	$247	$215
Adjustments to reconcile net income to net cash flows from operating activities:	Adjustments to reconcile net income to net cash flows from operating activities:			Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	Depreciation and amortization	139	139	Depreciation and amortization	211	209
Deferred tax expense (benefit) and tax credits	Deferred tax expense (benefit) and tax credits	10	(35)	Deferred tax expense (benefit) and tax credits	11	(63)
Other	Other	(6)	10	Other	(7)	12
Other changes in assets and liabilities:	Other changes in assets and liabilities:			Other changes in assets and liabilities:
Accounts receivable		(17)	9

Derivative assets	Derivative assets	(60)	(41)	Derivative assets	(66)	(116)
Regulatory assets	Regulatory assets	(65)	17	Regulatory assets	(120)	11
Accounts payable		38	1
Regulatory liabilities		20	(33)

Derivative liabilities		23	(12)

Deferred income taxes	Deferred income taxes	11	63	Deferred income taxes	20	108
Other	Other	(51)	(40)	Other	(17)	(27)
Net cash flows from operating activities	Net cash flows from operating activities	198	200	Net cash flows from operating activities	279	349
Cash flows used for investing activities:	Cash flows used for investing activities:			Cash flows used for investing activities:
Construction and acquisition expenditures	Construction and acquisition expenditures	(378)	(235)	Construction and acquisition expenditures	(604)	(487)
Other	Other	(6)	(18)	Other	(8)	(23)
Net cash flows used for investing activities	Net cash flows used for investing activities	(384)	(253)	Net cash flows used for investing activities	(612)	(510)
Cash flows from financing activities:	Cash flows from financing activities:			Cash flows from financing activities:
Common stock dividends	Common stock dividends	(89)	(85)	Common stock dividends	(133)	(126)
Capital contributions from parent	Capital contributions from parent	265	210	Capital contributions from parent	420	245

Proceeds from issuance of long-term debt				Proceeds from issuance of long-term debt	588	300

Net change in commercial paper	Net change in commercial paper	(14)	(65)	Net change in commercial paper	(236)	(254)
Contributions from noncontrolling interest	Contributions from noncontrolling interest	29	—	Contributions from noncontrolling interest	29	—

Distributions to noncontrolling interest				Distributions to noncontrolling interest	(29)	—
Other	Other	(3)	(7)	Other	(9)	(3)
Net cash flows from financing activities	Net cash flows from financing activities	188	53	Net cash flows from financing activities	630	162
Net increase in cash, cash equivalents and restricted cash	Net increase in cash, cash equivalents and restricted cash	2	—	Net increase in cash, cash equivalents and restricted cash	297	1
Cash, cash equivalents and restricted cash at beginning of period	Cash, cash equivalents and restricted cash at beginning of period	2	3	Cash, cash equivalents and restricted cash at beginning of period	2	3
Cash, cash equivalents and restricted cash at end of period	Cash, cash equivalents and restricted cash at end of period	$4	$3	Cash, cash equivalents and restricted cash at end of period	$299	$4
Supplemental cash flows information:	Supplemental cash flows information:			Supplemental cash flows information:
Cash paid during the period for:	Cash paid during the period for:			Cash paid during the period for:
Interest	Interest	($54)	($52)	Interest	($78)	($72)
Income taxes, net	Income taxes, net	($31)	($27)	Income taxes, net	($51)	($24)
Significant non-cash investing and financing activities:	Significant non-cash investing and financing activities:			Significant non-cash investing and financing activities:
Accrued capital expenditures	Accrued capital expenditures	$150	$104	Accrued capital expenditures	$355	$59

Refer to accompanying Combined Notes to Condensed Consolidated Financial Statements.


			11

Table of Contents

ALLIANT ENERGY CORPORATION

INTERSTATE POWER AND LIGHT COMPANY

WISCONSIN POWER AND LIGHT COMPANY

COMBINED NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

NOTE 1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

NOTE 1(a) General - The interim unaudited Financial Statements included herein have been prepared pursuant to the rules and regulations of the SEC. Accordingly, certain information and note disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted, although management believes that the disclosures are adequate to make the information presented not misleading. These Financial Statements should be read in conjunction with the financial statements and the notes thereto included in the 2021 Form 10-K.

In the opinion of management, all adjustments, which unless otherwise noted are normal and recurring in nature, necessary for a fair presentation of the results of operations, financial position and cash flows have been made. Results for the ~~six~~nine months ended ~~June~~September 30, 2022 are not necessarily indicative of results that may be expected for the year ending December 31, 2022.

A change in management’s estimates or assumptions could have a material impact on financial condition and results of operations during the period in which such change occurred. Certain prior period amounts in the Financial Statements and Notes have been reclassified to conform to the current period presentation for comparative purposes.

~~Note~~NOTE 1(b) Cash and Cash Equivalents - At September 30, 2022, Alliant Energy’s, IPL’s and WPL’s cash and cash equivalents included $334 million, $39 million and $295 million of money market fund investments, respectively, with weighted average interest rates of 3%.

NOTE 1(c) Variable Interest Entities (VIEs) - ~~A portion of WPL’s solar generation projects is financed, and is expected to be financed, with capital from tax equity partners through joint ventures.~~

In 2022, WPL 2022 Solar Holdco, LLC was formed as a joint venture to own and operate project companies responsible for the construction, ownership and operation of various solar generation assets. Members of the joint venture ~~are~~were a WPL subsidiary (the managing member) and a tax equity partner. In ~~June~~the second quarter of 2022, the WPL subsidiary and the tax equity partner contributed $62 million and $29 million, respectively, to WPL 2022 Solar Holdco, LLC in exchange for membership ~~interests. In June 2022,~~interests, and $88 million of the contributed funds were paid to WPL in exchange for equity interests in the project companies. ~~Once asset construction is complete,~~In the ~~WPL subsidiary and the tax equity partner will make additional cash contributions based on the fair value~~second quarter of the solar generation assets. Earnings, tax attributes, and cash flows from the joint venture will be allocated to both the WPL subsidiary and the tax equity partner in varying percentages over the life of the partnership. Once the tax equity partner has earned its negotiated rate of return and the agreed upon contractual date has been reached, WPL has the option to purchase the remaining interest in the joint venture from the tax equity partner at fair value.

2022, Alliant Energy and WPL ~~consolidate~~consolidated this joint venture as it iswas a VIE in which WPL ~~holds~~held a variable interest, and WPL ~~controls~~controlled decisions that ~~are~~were significant to the joint venture’s ongoing operations and economic results (i.e., WPL iswas the primary beneficiary).

~~The joint venture is subject to profit sharing arrangements in which~~In August 2022, the ~~allocation~~Inflation Reduction Act of 2022 was enacted. Following its enactment, WPL evaluated the provisions of the ~~joint venture’s cash distributions~~new legislation and ~~tax benefits~~determined that retaining full ownership of the solar projects is expected to ~~members is based on factors other than members' relative ownership percentages.~~result in lower costs for its customers. As a result, in the third quarter of 2022, WPL ~~utilizes~~and the ~~Hypothetical Liquidation at Book Value (HLBV) method~~tax equity partner terminated the tax equity partnership, and WPL returned the $29 million of initial funding to ~~allocate proceeds to each partner at~~ the ~~balance sheet date based on the liquidation provisions of the related joint venture's operating agreement and to adjust the amount of the VIE's net income attributable to~~tax equity partner. Alliant Energy and WPL ~~as well as the noncontrolling interest during the period.~~

In each reporting period, the application of HLBV to WPL’s consolidated VIE results in a difference between the amount of profit from the consolidated joint venture and the amount included in WPL’s regulated rates. WPL is subject to GAAP provisions for regulated operations and recognizes a regulatory liability or regulatory asset for amounts representing the timing difference between WPL’s profit earned from the joint venture and the amount included in regulated rates for recovery of itsno longer expect their solar generation ~~projects. The~~project construction costs to be financed with capital from tax equity partners, which would result in higher rate base amounts ~~recorded~~compared to those previously approved by the PSCW for WPL’s planned approximately 1,100 MW of solar generation. Alliant Energy and WPL concluded that no disallowance of anticipated higher rate base amounts was required as of September 30, 2022 given full ownership of WPL's planned solar generation is expected to result in ~~income will ultimately reflect the amount allowed in regulated rates to recover WPL’s investments over the useful life of the solar projects.~~lower costs for WPL's customers.

Refer to Note 6 for discussion of a noncontrolling interest that was initially associated with the joint ~~venture.~~venture prior to the termination of the tax equity partnership.


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Table of Contents

NOTE 2. REGULATORY MATTERS

Regulatory Assets and Regulatory Liabilities -

Regulatory assets were comprised of the following items (in millions):


		Alliant Energy		IPL		WPL			Alliant Energy		IPL		WPL
		June 30, 2022	December 31, 2021	June 30, 2022	December 31, 2021	June 30, 2022	December 31, 2021		September 30, 2022	December 31, 2021	September 30, 2022	December 31, 2021	September 30, 2022	December 31, 2021
Tax-related	Tax-related	$954	$934	$903	$884	$51	$50	Tax-related	$913	$934	$842	$884	$71	$50
Pension and OPEB costs	Pension and OPEB costs	445	462	220	228	225	234	Pension and OPEB costs	436	462	216	228	220	234
Asset retirement obligations	Asset retirement obligations	140	128	99	89	41	39	Asset retirement obligations	145	128	104	89	41	39
Commodity cost recovery								Commodity cost recovery	129	42	2	2	127	40
Derivatives	Derivatives	101	8	69	4	32	4	Derivatives	102	8	67	4	35	4
Commodity cost recovery		88	42	2	2	86	40
Assets retired early	Assets retired early	82	92	61	66	21	26	Assets retired early	75	92	56	66	19	26
IPL’s DAEC PPA amendment	IPL’s DAEC PPA amendment	78	90	78	90	—	—	IPL’s DAEC PPA amendment	72	90	72	90	—	—
WPL’s Western Wisconsin gas distribution expansion investments	WPL’s Western Wisconsin gas distribution expansion investments	50	52	—	—	50	52	WPL’s Western Wisconsin gas distribution expansion investments	49	52	—	—	49	52

Other	Other	113	132	58	80	55	52	Other	120	132	64	80	56	52
		$2,051	$1,940	$1,490	$1,443	$561	$497		$2,041	$1,940	$1,423	$1,443	$618	$497

~~Derivatives~~Tax-related - Refer to ~~Note 1~~N 1ote 9 for discussion of ~~changes~~Iowa Tax Reform, which resulted in a decrease in Alliant Energy’s and IPL’s ~~and WPL’s derivative liabilities/~~tax-related regulatory assets ~~during~~in the ~~three and six months ended June 30, 2022, which result in comparable changes to regulatory assets/liabilities on the balance sheets.~~third quarter of 2022.

Commodity cost recovery - The cost recovery mechanism for WPL’s retail electric customers is based on forecasts of certain fuel-related costs expected to be incurred during forward-looking test periods and fuel monitoring ranges determined by the PSCW during each retail electric rate proceeding or in a separate fuel cost plan approval proceeding. During the ~~six~~nine months ended ~~June~~September 30, 2022, WPL’s actual fuel-related costs fell outside these fuel monitoring ranges, resulting in a ~~$40~~$83 million deferral of higher than expected fuel-related costs as of ~~June~~September 30, 2022.

Derivatives - Refer to Note 11 for discussion of changes in Alliant Energy’s, IPL’s and WPL’s derivative liabilities/assets during the nine months ended September 30, 2022, which result in comparable changes to regulatory assets/liabilities on the balance sheets.

Regulatory liabilities were comprised of the following items (in millions):


		Alliant Energy		IPL		WPL			Alliant Energy		IPL		WPL
		June 30, 2022	December 31, 2021	June 30, 2022	December 31, 2021	June 30, 2022	December 31, 2021		September 30, 2022	December 31, 2021	September 30, 2022	December 31, 2021	September 30, 2022	December 31, 2021
Tax-related	Tax-related	$573	$585	$308	$312	$265	$273	Tax-related	$582	$585	$304	$312	$278	$273
Cost of removal obligations	Cost of removal obligations	396	384	258	252	138	132	Cost of removal obligations	398	384	258	252	140	132
Derivatives	Derivatives	288	166	153	77	135	89	Derivatives	312	166	164	77	148	89
WPL’s West Riverside liquidated damages	WPL’s West Riverside liquidated damages	34	36	—	—	34	36	WPL’s West Riverside liquidated damages	33	36	—	—	33	36
Electric transmission cost recovery	Electric transmission cost recovery	31	51	11	27	20	24	Electric transmission cost recovery	16	51	4	27	12	24

Other	Other	41	49	21	23	20	26	Other	46	49	31	23	15	26
		$1,363	$1,271	$751	$691	$612	$580		$1,387	$1,271	$761	$691	$626	$580

NOTE 3. PROPERTY, PLANT AND EQUIPMENT

In June 2022, WPL announced revised expected timing for the retirements of its remaining coal-fired EGUs in order to help manage regional capacity and changing generation requirements across the MISO region. WPL currently expects to retire the Edgewater Generating Station (414 MW) by June 1, 2025, and Columbia Units 1 and 2 by June 1, 2026 (595 MW in aggregate). In addition, IPL currently expects to retire the coal-fired Lansing Generating Station (275 MW) in the first half of 2023. Alliant Energy, IPL and WPL are working with MISO, state regulatory commissions and other regulatory agencies, as required, to determine the timing of these actions, which are subject to change depending on operational, regulatory, market and other factors.


			13

~~Table~~ of ~~Contents~~

NOTE 4. RECEIVABLES

Sales of Accounts Receivable - IPL maintains a Receivables Purchase and Sale Agreement (Receivables Agreement) whereby it may sell its customer accounts receivables, unbilled revenues and certain other accounts receivables to a third party through wholly-owned and consolidated special purpose entities. The transfers of receivables meet the criteria for sale accounting established by the transfer of financial assets accounting rules. As of ~~June~~September 30, 2022, IPL had ~~$95~~$109 million of available capacity under its sales of accounts receivable program. IPL’s maximum and average outstanding cash proceeds (based on daily outstanding balances) related to the sales of accounts receivable program for the three and ~~six~~nine months ended ~~June~~September 30 were as follows (in millions):

Three Months Six Months
2022 2021 2022 2021
Maximum outstanding aggregate cash proceeds $66 $110 $66 $110
Average outstanding aggregate cash proceeds 18 61 11 46


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Table of Contents


	Three Months		Nine Months
	2022	2021	2022	2021
Maximum outstanding aggregate cash proceeds	$36	$110	$66	$110
Average outstanding aggregate cash proceeds	3	65	8	52

The attributes of IPL’s receivables sold under the Receivables Agreement were as follows (in millions):


		June 30, 2022	December 31, 2021		September 30, 2022	December 31, 2021
Customer accounts receivable	Customer accounts receivable	$150	$125	Customer accounts receivable	$169	$125
Unbilled utility revenues	Unbilled utility revenues	119	104	Unbilled utility revenues	92	104

Receivables sold to third party	Receivables sold to third party	269	229	Receivables sold to third party	261	229
Less: cash proceeds	Less: cash proceeds	15	1	Less: cash proceeds	1	1
Deferred proceeds	Deferred proceeds	254	228	Deferred proceeds	260	228
Less: allowance for expected credit losses	Less: allowance for expected credit losses	10	14	Less: allowance for expected credit losses	12	14
Fair value of deferred proceeds	Fair value of deferred proceeds	$244	$214	Fair value of deferred proceeds	$248	$214

As of ~~June~~September 30, 2022, outstanding receivables past due under the Receivables Agreement were $20 million. Additional attributes of IPL’s receivables sold under the Receivables Agreement for the three and ~~six~~nine months ended ~~June~~September 30 were as follows (in millions):


		Three Months		Six Months			Three Months		Nine Months
		2022	2021	2022	2021		2022	2021	2022	2021
Collections	Collections	$500	$453	$1,061	$982	Collections	$670	$607	$1,731	$1,589
Write-offs, net of recoveries	Write-offs, net of recoveries	1	1	3	3	Write-offs, net of recoveries	3	4	6	7

NOTE 5. INVESTMENTS

Unconsolidated Equity Investments - Alliant Energy’s equity (income) loss from unconsolidated investments accounted for under the equity method of accounting for the three and ~~six~~nine months ended ~~June~~September 30 was as follows (in millions):


		Three Months		Six Months			Three Months		Nine Months
		2022	2021	2022	2021		2022	2021	2022	2021
ATC Holdings	ATC Holdings	($11)	($11)	($23)	($22)	ATC Holdings	($7)	($12)	($29)	($34)

Other	Other	(5)	(8)	(9)	(12)	Other	2	(1)	(8)	(13)
		($16)	($19)	($32)	($34)		($5)	($13)	($37)	($47)

Refer to N ote 13(e ) for discussion of a reduction in earnings recorded in the third quarter of 2022 related to a court decision, which is currently expected to reduce the base return on equity authorized for MISO transmission owners, including ATC.

NOTE 6. COMMON EQUITY

Common Share Activity - A summary of Alliant Energy’s common stock activity was as follows:


Shares outstanding, January 1, 2022			250,474,529


Shareowner Direct Plan			~~228,935~~324,533
Equity-based compensation plans			222,768

Shares outstanding, ~~June~~September 30, 2022			~~250,926,232~~251,021,830

Noncontrolling Interest - In the second quarter of 2022, WPL and the tax equity partner contributed to ~~the~~a joint venture associated with certain WPL solar generation projects. Earnings, tax attributes and cash flows from the joint venture will be allocated to both the WPL subsidiary and the tax equity partner in varying percentages by category and over the life of the partnership. The tax equity partner's contributions ~~net of these allocations, is~~were represented as a noncontrolling interest within total equity on Alliant Energy’s and WPL’s balance ~~sheets.~~sheets as of June 30, 2022. In the third quarter of 2022, WPL and the tax equity partner terminated the tax equity partnership and WPL returned the tax equity partner’s initial contributions, resulting in the reversal of the noncontrolling interest within total equity on Alliant Energy’s and WPL’s balance sheets as of September 30, 2022. Refer to Note ~~1(b)~~1(c ) for additional information.


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Table of Contents

Changes in Shareowners’ Equity - A summary of changes in shareowners’ equity was as follows (in millions):


Alliant Energy	Alliant Energy	Total Alliant Energy Common Equity							Alliant Energy	Total Alliant Energy Common Equity
					Accumulated	Shares in							Accumulated	Shares in
			Additional		Other	Deferred					Additional		Other	Deferred
		Common	Paid-In	Retained	Comprehensive	Compensation	Noncontrolling	Total		Common	Paid-In	Retained	Comprehensive	Compensation	Noncontrolling	Total
		Stock	Capital	Earnings	Loss	Trust	Interest	Equity		Stock	Capital	Earnings	Loss	Trust	Interest	Equity
Three Months Ended June 30, 2022
Beginning balance, March 31, 2022		$3	$2,750	$3,336	$—	($12)	$—	$6,077
Three Months Ended September 30, 2022									Three Months Ended September 30, 2022
Beginning balance, June 30, 2022									Beginning balance, June 30, 2022	$3	$2,759	$3,387	$—	($12)	$29	$6,166
Net income attributable to Alliant Energy common shareowners	Net income attributable to Alliant Energy common shareowners			159				159	Net income attributable to Alliant Energy common shareowners			227				227
Common stock dividends ($0.4275 per share)	Common stock dividends ($0.4275 per share)			(108)				(108)	Common stock dividends ($0.4275 per share)			(106)				(106)
Shareowner Direct Plan issuances	Shareowner Direct Plan issuances		6					6	Shareowner Direct Plan issuances		6					6
Equity-based compensation plans and other	Equity-based compensation plans and other		3					3	Equity-based compensation plans and other		2			(1)		1
Contributions from noncontrolling interest							29	29

Distributions to noncontrolling interest									Distributions to noncontrolling interest						(29)	(29)

Ending balance, June 30, 2022		$3	$2,759	$3,387	$—	($12)	$29	$6,166
Ending balance, September 30, 2022									Ending balance, September 30, 2022	$3	$2,767	$3,508	$—	($13)	$—	$6,265

Alliant Energy

Total Alliant Energy Common Equity

Alliant Energy

Total Alliant Energy Common Equity

Accumulated

Shares in

Cumulative

Accumulated

Shares in

Cumulative

Additional

Other

Deferred

Preferred

Additional

Other

Deferred

Preferred

Common

Paid-In

Retained

Comprehensive

Compensation

Stock

Total

Common

Paid-In

Retained

Comprehensive

Compensation

Stock

Total

Stock

Capital

Earnings

Loss

Trust

of IPL

Equity

Stock

Capital

Earnings

Loss

Trust

of IPL

Equity

Three Months Ended June 30, 2021

Beginning balance, March 31, 2021

$2,712

$3,063

($1)

($11)

$200

$5,966

Three Months Ended September 30, 2021

Beginning balance, June 30, 2021

$2,722

$3,106

($1)

($11)

$200

$6,019

Net income attributable to Alliant Energy common shareowners

144

Net income attributable to Alliant Energy common shareowners

256

Common stock dividends ($0.4025 per share)

(101)

Common stock dividends ($0.4025 per share)

(101)

Shareowner Direct Plan issuances

Equity-based compensation plans and other

Ending balance, June 30, 2021

$2,722

$3,106

($1)

($11)

$200

$6,019

Ending balance, September 30, 2021

$2,733

$3,261

($1)

($11)

$200

$6,185


Alliant Energy	Alliant Energy	Total Alliant Energy Common Equity							Alliant Energy	Total Alliant Energy Common Equity
					Accumulated	Shares in							Accumulated	Shares in
			Additional		Other	Deferred					Additional		Other	Deferred
		Common	Paid-In	Retained	Comprehensive	Compensation	Noncontrolling	Total		Common	Paid-In	Retained	Comprehensive	Compensation	Noncontrolling	Total
		Stock	Capital	Earnings	Loss	Trust	Interest	Equity		Stock	Capital	Earnings	Loss	Trust	Interest	Equity
Six Months Ended June 30, 2022
Nine Months Ended September 30, 2022									Nine Months Ended September 30, 2022
Beginning balance, December 31, 2021	Beginning balance, December 31, 2021	$3	$2,749	$3,250	$—	($12)	$—	$5,990	Beginning balance, December 31, 2021	$3	$2,749	$3,250	$—	($12)	$—	$5,990
Net income attributable to Alliant Energy common shareowners	Net income attributable to Alliant Energy common shareowners			351				351	Net income attributable to Alliant Energy common shareowners			579				579
Common stock dividends ($0.855 per share)				(215)				(215)
Common stock dividends ($1.2825 per share)									Common stock dividends ($1.2825 per share)			(322)				(322)
Shareowner Direct Plan issuances	Shareowner Direct Plan issuances		13					13	Shareowner Direct Plan issuances		19					19
Equity-based compensation plans and other	Equity-based compensation plans and other		(3)	1				(2)	Equity-based compensation plans and other		(1)	1		(1)		(1)
Contributions from noncontrolling interest	Contributions from noncontrolling interest						29	29	Contributions from noncontrolling interest						29	29
Distributions to noncontrolling interest									Distributions to noncontrolling interest						(29)	(29)

Ending balance, June 30, 2022		$3	$2,759	$3,387	$—	($12)	$29	$6,166
Ending balance, September 30, 2022									Ending balance, September 30, 2022	$3	$2,767	$3,508	$—	($13)	$—	$6,265


Alliant Energy	Alliant Energy	Total Alliant Energy Common Equity							Alliant Energy	Total Alliant Energy Common Equity
					Accumulated	Shares in	Cumulative						Accumulated	Shares in	Cumulative
			Additional		Other	Deferred	Preferred				Additional		Other	Deferred	Preferred
		Common	Paid-In	Retained	Comprehensive	Compensation	Stock	Total		Common	Paid-In	Retained	Comprehensive	Compensation	Stock	Total
		Stock	Capital	Earnings	Loss	Trust	of IPL	Equity		Stock	Capital	Earnings	Loss	Trust	of IPL	Equity
Six Months Ended June 30, 2021
Nine Months Ended September 30, 2021									Nine Months Ended September 30, 2021
Beginning balance, December 31, 2020	Beginning balance, December 31, 2020	$2	$2,704	$2,994	($1)	($11)	$200	$5,888	Beginning balance, December 31, 2020	$2	$2,704	$2,994	($1)	($11)	$200	$5,888
Net income attributable to Alliant Energy common shareowners	Net income attributable to Alliant Energy common shareowners			315				315	Net income attributable to Alliant Energy common shareowners			571				571
Common stock dividends ($0.805 per share)				(203)				(203)
Common stock dividends ($1.2075 per share)									Common stock dividends ($1.2075 per share)			(304)				(304)
Shareowner Direct Plan issuances	Shareowner Direct Plan issuances	1	14					15	Shareowner Direct Plan issuances	1	21					22
Equity-based compensation plans and other	Equity-based compensation plans and other		4					4	Equity-based compensation plans and other		8					8

Ending balance, June 30, 2021		$3	$2,722	$3,106	($1)	($11)	$200	$6,019
Ending balance, September 30, 2021									Ending balance, September 30, 2021	$3	$2,733	$3,261	($1)	($11)	$200	$6,185


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Table of Contents

IPL Total IPL Common Equity
Additional Cumulative
Common Paid-In Retained Preferred Total
Stock Capital Earnings Stock Equity
Three Months Ended June 30, 2022
Beginning balance, March 31, 2022 $33 $2,807 $935 $— $3,775
Net income available for common stock 87 87
Common stock dividends (80) (80)
Ending balance, June 30, 2022 $33 $2,807 $942 $— $3,782
Three Months Ended June 30, 2021
Beginning balance, March 31, 2021 $33 $2,752 $957 $200 $3,942
Net income available for common stock 86 86
Common stock dividends (99) (99)
Capital contributions from parent 50 50
Ending balance, June 30, 2021 $33 $2,802 $944 $200 $3,979


IPL	Total IPL Common Equity
		Additional		Cumulative
	Common	Paid-In	Retained	Preferred	Total
	Stock	Capital	Earnings	Stock	Equity
Three Months Ended September 30, 2022
Beginning balance, June 30, 2022	$33	$2,807	$942	$—	$3,782
Net income available for common stock			154		154
Common stock dividends			(80)		(80)

Ending balance, September 30, 2022	$33	$2,807	$1,016	$—	$3,856
Three Months Ended September 30, 2021
Beginning balance, June 30, 2021	$33	$2,802	$944	$200	$3,979
Net income available for common stock			157		157
Common stock dividends			(101)		(101)

Ending balance, September 30, 2021	$33	$2,802	$1,000	$200	$4,035


IPL	IPL	Total IPL Common Equity					IPL	Total IPL Common Equity
			Additional		Cumulative				Additional		Cumulative
		Common	Paid-In	Retained	Preferred	Total		Common	Paid-In	Retained	Preferred	Total
		Stock	Capital	Earnings	Stock	Equity		Stock	Capital	Earnings	Stock	Equity
Six Months Ended June 30, 2022
Nine Months Ended September 30, 2022							Nine Months Ended September 30, 2022
Beginning balance, December 31, 2021	Beginning balance, December 31, 2021	$33	$2,807	$929	$—	$3,769	Beginning balance, December 31, 2021	$33	$2,807	$929	$—	$3,769
Net income available for common stock	Net income available for common stock			173		173	Net income available for common stock			327		327
Common stock dividends	Common stock dividends			(160)		(160)	Common stock dividends			(240)		(240)

Ending balance, June 30, 2022		$33	$2,807	$942	$—	$3,782
Six Months Ended June 30, 2021
Ending balance, September 30, 2022							Ending balance, September 30, 2022	$33	$2,807	$1,016	$—	$3,856
Nine Months Ended September 30, 2021							Nine Months Ended September 30, 2021
Beginning balance, December 31, 2020	Beginning balance, December 31, 2020	$33	$2,752	$979	$200	$3,964	Beginning balance, December 31, 2020	$33	$2,752	$979	$200	$3,964
Net income available for common stock	Net income available for common stock			165		165	Net income available for common stock			322		322
Common stock dividends	Common stock dividends			(200)		(200)	Common stock dividends			(301)		(301)
Capital contributions from parent	Capital contributions from parent		50			50	Capital contributions from parent		50			50
Ending balance, June 30, 2021		$33	$2,802	$944	$200	$3,979
Ending balance, September 30, 2021							Ending balance, September 30, 2021	$33	$2,802	$1,000	$200	$4,035

WPL Total WPL Common Equity
Additional
Common Paid-In Retained Noncontrolling Total
Stock Capital Earnings Interest Equity
Three Months Ended June 30, 2022
Beginning balance, March 31, 2022 $66 $1,884 $1,101 $— $3,051
Net income 63 63
Common stock dividends (44) (44)
Capital contributions from parent 85 85
Contributions from noncontrolling interest 29 29
Other (1) (1)
Ending balance, June 30, 2022 $66 $1,968 $1,120 $29 $3,183
Three Months Ended June 30, 2021
Beginning balance, March 31, 2021 $66 $1,584 $995 $— $2,645
Net income 38 38
Common stock dividends (43) (43)
Capital contributions from parent 85 85
Ending balance, June 30, 2021 $66 $1,669 $990 $— $2,725


WPL	Total WPL Common Equity
		Additional
	Common	Paid-In	Retained	Noncontrolling	Total
	Stock	Capital	Earnings	Interest	Equity
Three Months Ended September 30, 2022
Beginning balance, June 30, 2022	$66	$1,968	$1,120	$29	$3,183
Net income			91		91
Common stock dividends			(44)		(44)
Capital contributions from parent		155			155

Distributions to noncontrolling interest				(29)	(29)

Ending balance, September 30, 2022	$66	$2,123	$1,167	$—	$3,356
Three Months Ended September 30, 2021
Beginning balance, June 30, 2021	$66	$1,669	$990	$—	$2,725
Net income			93		93
Common stock dividends			(41)		(41)
Capital contributions from parent		35			35


Ending balance, September 30, 2021	$66	$1,704	$1,042	$—	$2,812


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Table of Contents


WPL	WPL	Total WPL Common Equity					WPL	Total WPL Common Equity
			Additional						Additional
		Common	Paid-In	Retained	Noncontrolling	Total		Common	Paid-In	Retained	Noncontrolling	Total
		Stock	Capital	Earnings	Interest	Equity		Stock	Capital	Earnings	Interest	Equity
Six Months Ended June 30, 2022
Nine Months Ended September 30, 2022							Nine Months Ended September 30, 2022
Beginning balance, December 31, 2021	Beginning balance, December 31, 2021	$66	$1,704	$1,053	$—	$2,823	Beginning balance, December 31, 2021	$66	$1,704	$1,053	$—	$2,823
Net income	Net income			156		156	Net income			247		247
Common stock dividends	Common stock dividends			(89)		(89)	Common stock dividends			(133)		(133)
Capital contributions from parent	Capital contributions from parent		265			265	Capital contributions from parent		420			420
Contributions from noncontrolling interest	Contributions from noncontrolling interest				29	29	Contributions from noncontrolling interest				29	29

Distributions to noncontrolling interest							Distributions to noncontrolling interest				(29)	(29)
Other	Other		(1)			(1)	Other		(1)			(1)
Ending balance, June 30, 2022		$66	$1,968	$1,120	$29	$3,183
Six Months Ended June 30, 2021
Ending balance, September 30, 2022							Ending balance, September 30, 2022	$66	$2,123	$1,167	$—	$3,356
Nine Months Ended September 30, 2021							Nine Months Ended September 30, 2021
Beginning balance, December 31, 2020	Beginning balance, December 31, 2020	$66	$1,459	$953	$—	$2,478	Beginning balance, December 31, 2020	$66	$1,459	$953	$—	$2,478
Net income	Net income			122		122	Net income			215		215
Common stock dividends	Common stock dividends			(85)		(85)	Common stock dividends			(126)		(126)
Capital contributions from parent	Capital contributions from parent		210			210	Capital contributions from parent		245			245

Ending balance, June 30, 2021		$66	$1,669	$990	$—	$2,725
Ending balance, September 30, 2021							Ending balance, September 30, 2021	$66	$1,704	$1,042	$—	$2,812

NOTE 7. DEBT

NOTE 7(a) Short-term Debt - Information regarding Alliant Energy’s, IPL’s and WPL’s commercial paper classified as short-term debt was as follows (dollars in millions):


June 30, 2022		Alliant Energy	IPL	WPL
September 30, 2022					September 30, 2022	Alliant Energy	IPL	WPL
Amount outstanding	Amount outstanding	$399	$—	$222	Amount outstanding	$383	$—	$—
Weighted average interest rates	Weighted average interest rates	1.8%	N/A	1.7%	Weighted average interest rates	3.4%	N/A	N/A
Available credit facility capacity	Available credit facility capacity	$601	$250	$78	Available credit facility capacity	$617	$250	$300


		Alliant Energy		IPL		WPL			Alliant Energy		IPL		WPL
Three Months Ended June 30		2022	2021	2022	2021	2022	2021
Three Months Ended September 30								Three Months Ended September 30	2022	2021	2022	2021	2022	2021
Maximum amount outstanding (based on daily outstanding balances)	Maximum amount outstanding (based on daily outstanding balances)	$441	$571	$—	$19	$222	$232	Maximum amount outstanding (based on daily outstanding balances)	$449	$648	$—	$8	$251	$320
Average amount outstanding (based on daily outstanding balances)	Average amount outstanding (based on daily outstanding balances)	$337	$452	$—	$1	$166	$177	Average amount outstanding (based on daily outstanding balances)	$353	$560	$—	$—	$110	$221
Weighted average interest rates	Weighted average interest rates	1.0%	0.2%	—%	0.2%	0.9%	0.1%	Weighted average interest rates	2.4%	0.2%	—%	0.2%	2.0%	0.1%
Six Months Ended June 30
Nine Months Ended September 30								Nine Months Ended September 30
Maximum amount outstanding (based on daily outstanding balances)	Maximum amount outstanding (based on daily outstanding balances)	$577	$578	$—	$19	$252	$275	Maximum amount outstanding (based on daily outstanding balances)	$577	$648	$—	$19	$252	$320
Average amount outstanding (based on daily outstanding balances)	Average amount outstanding (based on daily outstanding balances)	$390	$438	$—	$—	$185	$183	Average amount outstanding (based on daily outstanding balances)	$377	$479	$—	$—	$160	$196
Weighted average interest rates	Weighted average interest rates	0.6%	0.2%	—%	0.2%	0.5%	0.1%	Weighted average interest rates	1.2%	0.2%	—%	0.2%	0.9%	0.1%

In October 2022, Alliant Energy, IPL and WPL reallocated credit facility capacity amounts to $500 million for Alliant Energy at the parent company level, $200 million for IPL and $300 million for WPL, within the $1 billion total commitment.

NOTE 7(b) Long-term Debt - In February 2022, AEF issued $350 million of 3.6% senior notes due 2032. The net proceeds from the issuance were used to reduce Alliant Energy’s outstanding commercial paper and for general corporate purposes. In March 2022, AEF entered into a $300 million variable rate ~~(2%~~(3% as of ~~June~~September 30, 2022) term loan credit agreement (with Alliant Energy as guarantor), which expires in March 2024, and used the borrowings under this agreement to retire its $300 million variable rate term loan credit agreement that expired in March 2022.

In August 2022, WPL issued $600 million of 3.95% debentures due 2032. The debentures were issued as green bonds, and an amount equal to or in excess of the net proceeds will be disbursed for the development and acquisition of WPL’s solar EGUs.

In September 2022, Corporate Services retired its $75 million, 3.45% senior notes due 2022.


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NOTE 8. REVENUES

Disaggregation of revenues from contracts with customers, which correlates to revenues for each reportable segment, was as follows (in millions):


		Alliant Energy		IPL		WPL			Alliant Energy		IPL		WPL
Three Months Ended June 30		2022	2021	2022	2021	2022	2021
Three Months Ended September 30								Three Months Ended September 30	2022	2021	2022	2021	2022	2021
Electric Utility:	Electric Utility:							Electric Utility:
Retail - residential	Retail - residential	$289	$258	$158	$142	$131	$116	Retail - residential	$376	$348	$222	$207	$154	$141
Retail - commercial	Retail - commercial	196	175	127	115	69	60	Retail - commercial	243	232	165	160	78	72
Retail - industrial	Retail - industrial	244	210	136	116	108	94	Retail - industrial	289	265	172	158	117	107
Wholesale	Wholesale	54	47	16	15	38	32	Wholesale	68	55	19	18	49	37
Bulk power and other	Bulk power and other	29	27	5	14	24	13	Bulk power and other	63	39	18	12	45	27
Total Electric Utility	Total Electric Utility	812	717	442	402	370	315	Total Electric Utility	1,039	939	596	555	443	384
Gas Utility:	Gas Utility:							Gas Utility:
Retail - residential	Retail - residential	51	39	28	24	23	15	Retail - residential	28	24	14	14	14	10
Retail - commercial	Retail - commercial	27	19	14	12	13	7	Retail - commercial	18	13	8	8	10	5
Retail - industrial	Retail - industrial	3	3	2	2	1	1	Retail - industrial	4	3	3	3	1	—
Transportation/other	Transportation/other	13	8	8	5	5	3	Transportation/other	12	10	8	6	4	4
Total Gas Utility	Total Gas Utility	94	69	52	43	42	26	Total Gas Utility	62	50	33	31	29	19
Other Utility:	Other Utility:							Other Utility:
Steam	Steam	11	9	11	9	—	—	Steam	9	9	9	9	—	—
Other utility	Other utility	2	1	1	1	1	—	Other utility	2	4	2	4	—	—
Total Other Utility	Total Other Utility	13	10	12	10	1	—	Total Other Utility	11	13	11	13	—	—
Non-Utility and Other:	Non-Utility and Other:							Non-Utility and Other:
Travero and other	Travero and other	24	21	—	—	—	—	Travero and other	23	22	—	—	—	—

Total Non-Utility and Other	Total Non-Utility and Other	24	21	—	—	—	—	Total Non-Utility and Other	23	22	—	—	—	—
Total revenues	Total revenues	$943	$817	$506	$455	$413	$341	Total revenues	$1,135	$1,024	$640	$599	$472	$403


		Alliant Energy		IPL		WPL			Alliant Energy		IPL		WPL
Six Months Ended June 30		2022	2021	2022	2021	2022	2021
Nine Months Ended September 30								Nine Months Ended September 30	2022	2021	2022	2021	2022	2021
Electric Utility:	Electric Utility:							Electric Utility:
Retail - residential	Retail - residential	$581	$520	$308	$281	$273	$239	Retail - residential	$956	$868	$529	$488	$427	$380
Retail - commercial	Retail - commercial	386	347	246	225	140	122	Retail - commercial	628	579	411	385	217	194
Retail - industrial	Retail - industrial	453	412	246	228	207	184	Retail - industrial	743	677	418	386	325	291
Wholesale	Wholesale	101	87	31	26	70	61	Wholesale	168	142	49	44	119	98
Bulk power and other	Bulk power and other	65	52	12	28	53	24	Bulk power and other	129	91	31	40	98	51
Total Electric Utility	Total Electric Utility	1,586	1,418	843	788	743	630	Total Electric Utility	2,624	2,357	1,438	1,343	1,186	1,014
Gas Utility:	Gas Utility:							Gas Utility:
Retail - residential	Retail - residential	210	138	113	76	97	62	Retail - residential	237	162	127	90	110	72
Retail - commercial	Retail - commercial	109	72	54	39	55	33	Retail - commercial	127	85	62	47	65	38
Retail - industrial	Retail - industrial	11	8	7	5	4	3	Retail - industrial	15	11	10	8	5	3
Transportation/other	Transportation/other	26	21	17	14	9	7	Transportation/other	39	31	25	20	14	11
Total Gas Utility	Total Gas Utility	356	239	191	134	165	105	Total Gas Utility	418	289	224	165	194	124
Other Utility:	Other Utility:							Other Utility:
Steam	Steam	20	18	20	18	—	—	Steam	29	27	29	27	—	—
Other utility	Other utility	3	5	2	4	1	1	Other utility	6	9	5	8	1	1
Total Other Utility	Total Other Utility	23	23	22	22	1	1	Total Other Utility	35	36	34	35	1	1
Non-Utility and Other:	Non-Utility and Other:							Non-Utility and Other:
Travero and other	Travero and other	47	38	—	—	—	—	Travero and other	70	60	—	—	—	—

Total Non-Utility and Other	Total Non-Utility and Other	47	38	—	—	—	—	Total Non-Utility and Other	70	60	—	—	—	—
Total revenues	Total revenues	$2,012	$1,718	$1,056	$944	$909	$736	Total revenues	$3,147	$2,742	$1,696	$1,543	$1,381	$1,139

NOTE 9. INCOME TAXES

Income Tax Rates - Overall effective income tax rates, which were computed by dividing income tax expense (benefit) by income before income taxes, were as follows. The effective income tax rates were different than the federal statutory rate primarily due to state income taxes, production tax credits, amortization of excess deferred taxes and the effect of rate-making on property-related differences. The increases in Alliant Energy’s and WPL’s overall effective income tax rates for the three


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and ~~six~~nine months ended ~~June~~September 30, 2022 compared to the same periods in 2021 were primarily due to decreased amortization of excess deferred taxes primarily at WPL.

Alliant Energy IPL WPL
Three Months Six Months Three Months Six Months Three Months Six Months
2022 2021 2022 2021 2022 2021 2022 2021 2022 2021 2022 2021
Overall income tax rate 2% (13%) 3% (16%) (16%) (13%) (15%) (15%) 18% (23%) 18% (27%)


	Alliant Energy				IPL				WPL
	Three Months		Nine Months		Three Months		Nine Months		Three Months		Nine Months
	2022	2021	2022	2021	2022	2021	2022	2021	2022	2021	2022	2021
Overall income tax rate	6%	(9%)	4%	(13%)	(12%)	(8%)	(14%)	(11%)	15%	(19%)	17%	(24%)

Deferred Tax Assets and Liabilities -

Carryforwards - In the third quarter of 2022, Alliant Energy, IPL and WPL fully utilized their respective federal net operating losses carryforwards. At ~~June~~September 30, 2022, the remaining carryforwards and expiration dates were estimated as follows (in millions):


		Range of Expiration Dates	Alliant Energy	IPL	WPL		Range of Expiration Dates	Alliant Energy	IPL	WPL
Federal net operating losses		2037	$41	$38	$—

State net operating losses	State net operating losses	2022-2042	556	10	2	State net operating losses	2022-2042	$500	$9	$2
Federal tax credits	Federal tax credits	2022-2042	620	396	201	Federal tax credits	2022-2042	655	437	208

Iowa Tax Reform - In March 2022, Iowa tax reform was ~~enacted, which would reduce the current 9.8% Iowa corporate income tax rate beginning in 2023 if certain state income tax revenue triggers are satisfied.~~enacted. Annually, and by each November 1, the Iowa Department of Revenue will establish corporate income tax rates for the next tax year based on net corporate income tax receipts for the prior tax ~~year.~~year, and reduce such rates if certain state income tax revenue triggers are satisfied. These corporate income tax rate reductions are currently expected to occur over a period of several years, with a target corporate income tax rate of 5.5%., compared to the current 9.8% Iowa corporate income tax rate. In September 2022, the Iowa Department of Revenue announced an Iowa corporate income tax rate of 8.4%, effective January 1, 2023. Deferred tax assets and liabilities are measured at the enacted tax rate expected to be applied when temporary differences are to be realized or settled. Given the announcement of the new Iowa corporate income tax rate, Alliant Energy’s and IPL’s deferred tax liabilities were remeasured based upon the new rate effective January 1, 2023, which resulted in a $76 million reduction of Alliant Energy’s and IPL’s tax-related regulatory assets and a decrease in their deferred tax liabilities in the third quarter of 2022. The reduction in tax-related regulatory assets is expected to provide cost benefits to IPL’s customers in the future. Alliant Energy parent company’s deferred tax assets were remeasured based upon the new rate effective January 1, 2023, which resulted in a charge of $8 million recorded to income tax expense in Alliant Energy’s income statement and a decrease in deferred income tax assets on Alliant Energy’s balance sheet in the third quarter of 2022. Alliant Energy is currently unable to predict with certainty the timing or amount of any future rate reductions. The majority of any reduction in income tax expense as a result of the lower Iowa corporate income tax rate is currently expected to reduce rates for IPL’s customers. In addition, after the 2023 corporate income tax rate is known in the fourth quarter of 2022, Alliant Energy currently expects to record a charge related to the remeasurement of accumulated deferred income tax assets at its non-utility businesses.

NOTE 10. BENEFIT PLANS

NOTE 10(a) Pension and OPEB Plans -

Net Periodic Benefit Costs - The components of net periodic benefit costs for sponsored defined benefit pension and OPEB plans for the three and ~~six~~nine months ended ~~June~~September 30 are included below (in millions). For IPL and WPL, amounts are for their plan participants covered under plans they sponsor, as well as amounts directly assigned to them related to certain participants in the Alliant Energy and Corporate Services sponsored plans.


		Defined Benefit Pension Plans				OPEB Plans					Defined Benefit Pension Plans				OPEB Plans
		Three Months		Six Months		Three Months		Six Months			Three Months		Nine Months		Three Months		Nine Months
Alliant Energy	Alliant Energy	2022	2021	2022	2021	2022	2021	2022	2021	Alliant Energy	2022	2021	2022	2021	2022	2021	2022	2021
Service cost	Service cost	$2	$3	$4	$6	$1	$1	$2	$2	Service cost	$3	$2	$7	$8	$—	$1	$2	$3
Interest cost	Interest cost	9	9	18	17	2	1	3	2	Interest cost	9	9	27	26	1	1	4	3
Expected return on plan assets	Expected return on plan assets	(17)	(17)	(34)	(34)	(2)	(1)	(3)	(2)	Expected return on plan assets	(18)	(17)	(52)	(51)	—	(1)	(3)	(3)

Amortization of prior service credit										Amortization of prior service credit	—	(1)	—	(1)	—	—	—	—
Amortization of actuarial loss	Amortization of actuarial loss	8	9	16	19	—	1	1	2	Amortization of actuarial loss	8	10	24	29	1	1	2	3

		$2	$4	$4	$8	$1	$2	$3	$4		$2	$3	$6	$11	$2	$2	$5	$6


		Defined Benefit Pension Plans				OPEB Plans					Defined Benefit Pension Plans				OPEB Plans
		Three Months		Six Months		Three Months		Six Months			Three Months		Nine Months		Three Months		Nine Months
IPL	IPL	2022	2021	2022	2021	2022	2021	2022	2021	IPL	2022	2021	2022	2021	2022	2021	2022	2021
Service cost	Service cost	$1	$2	$3	$4	$1	$1	$1	$1	Service cost	$1	$1	$4	$5	$—	$—	$1	$1
Interest cost	Interest cost	4	4	8	8	—	—	1	1	Interest cost	4	4	12	12	1	1	2	2
Expected return on plan assets	Expected return on plan assets	(8)	(8)	(16)	(16)	(1)	(1)	(2)	(2)	Expected return on plan assets	(7)	(8)	(23)	(24)	(1)	(1)	(3)	(3)

Amortization of actuarial loss	Amortization of actuarial loss	4	4	7	8	—	1	—	1	Amortization of actuarial loss	3	5	10	13	—	—	—	1
		$1	$2	$2	$4	$—	$1	$—	$1		$1	$2	$3	$6	$—	$—	$—	$1

Defined Benefit Pension Plans OPEB Plans
Three Months Six Months Three Months Six Months
WPL 2022 2021 2022 2021 2022 2021 2022 2021
Service cost $1 $1 $2 $2 $— $— $— $—
Interest cost 4 4 8 8 — 1 1 1
Expected return on plan assets (8) (7) (16) (15) — — — —
Amortization of actuarial loss 4 4 8 9 1 — 1 1
$1 $2 $2 $4 $1 $1 $2 $2


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	Defined Benefit Pension Plans				OPEB Plans
	Three Months		Nine Months		Three Months		Nine Months
WPL	2022	2021	2022	2021	2022	2021	2022	2021
Service cost	$—	$1	$2	$3	$—	$1	$—	$1
Interest cost	4	3	12	11	1	—	2	1
Expected return on plan assets	(7)	(8)	(23)	(23)	—	—	—	—

Amortization of actuarial loss	4	5	12	14	—	1	1	2

	$1	$1	$3	$5	$1	$2	$3	$4

NOTE 10(b) Equity-based Compensation Plans - A summary of compensation expense, including amounts allocated to IPL and WPL, and the related income tax benefits recognized for share-based compensation awards for the three and ~~six~~nine months ended ~~June~~September 30 was as follows (in millions):


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		Alliant Energy				IPL				WPL					Alliant Energy				IPL				WPL
		Three Months		Six Months		Three Months		Six Months		Three Months		Six Months			Three Months		Nine Months		Three Months		Nine Months		Three Months		Nine Months
		2022	2021	2022	2021	2022	2021	2022	2021	2022	2021	2022	2021		2022	2021	2022	2021	2022	2021	2022	2021	2022	2021	2022	2021
Compensation expense	Compensation expense	$3	$2	$7	$5	$1	$2	$4	$3	$1	$1	$3	$2	Compensation expense	$3	$4	$9	$9	$2	$2	$5	$5	$1	$2	$4	$4
Income tax benefits	Income tax benefits	1	1	2	2	—	1	1	1	—	1	1	1	Income tax benefits	1	1	3	3	—	—	1	1	—	—	1	1

As of ~~June~~September 30, 2022, Alliant Energy’s, IPL’s and WPL’s total unrecognized compensation cost related to share-based compensation awards was ~~$11~~$8 million, $6$5 million and $5$3 million, respectively, which is expected to be recognized over a weighted average period of between 1 year and 2 years.

For the ~~six~~nine months ended ~~June~~September 30, 2022, performance shares, performance restricted stock units and restricted stock units were granted to key employees under existing plans as follows. These shares and units will be paid out in shares of common stock, and are therefore accounted for as equity awards.


			Weighted Average			Weighted Average
		Grants	Grant Date Fair Value		Grants	Grant Date Fair Value
Performance shares	Performance shares	73,762	$54.45	Performance shares	74,106	$54.45
Performance restricted stock units	Performance restricted stock units	84,277	56.97	Performance restricted stock units	84,670	57.01
Restricted stock units	Restricted stock units	76,876	56.86	Restricted stock units	77,122	56.88

As of ~~June~~September 30, 2022, ~~261,301~~285,909 shares were included in the calculation of diluted EPS related to the nonvested equity awards.

NOTE 11. DERIVATIVE INSTRUMENTS

Commodity Derivatives -

Notional Amounts - As of ~~June~~September 30, 2022, gross notional amounts and settlement/delivery years related to outstanding swap contracts, option contracts, physical forward contracts and FTRs that were accounted for as commodity derivative instruments were as follows (units in thousands):


		Electricity		FTRs		Natural Gas		Coal		Diesel Fuel			Electricity		FTRs		Natural Gas		Coal		Diesel Fuel
		MWhs	Years	MWhs	Years	Dths	Years	Tons	Years	Gallons	Years		MWhs	Years	MWhs	Years	Dths	Years	Tons	Years	Gallons	Years
Alliant Energy	Alliant Energy	818	2022,2024	20,382	2022-2023	234,755	2022-2030	2,216	2022-2023	1,512	2022	Alliant Energy	1,379	2022-2024	14,454	2022-2023	249,508	2022-2032	1,566	2022-2023	756	2022
IPL	IPL	495	2022,2024	8,100	2022-2023	132,019	2022-2030	900	2022-2023	—	—	IPL	768	2022-2024	6,165	2022-2023	135,193	2022-2030	669	2022-2023	—	—
WPL	WPL	323	2022	12,282	2022-2023	102,736	2022-2030	1,316	2022-2023	1,512	2022	WPL	611	2022-2023	8,289	2022-2023	114,315	2022-2032	897	2022-2023	756	2022

Financial Statement Presentation - Derivative instruments are recorded at fair value each reporting date on the balance sheets as assets or liabilities as follows (in millions):


		Alliant Energy		IPL		WPL			Alliant Energy		IPL		WPL
		June 30, 2022	December 31, 2021	June 30, 2022	December 31, 2021	June 30, 2022	December 31, 2021		September 30, 2022	December 31, 2021	September 30, 2022	December 31, 2021	September 30, 2022	December 31, 2021
Current derivative assets	Current derivative assets	$217	$113	$131	$48	$86	$65	Current derivative assets	$200	$113	$117	$48	$83	$65
Non-current derivative assets	Non-current derivative assets	142	63	76	36	66	27	Non-current derivative assets	160	63	85	36	75	27
Current derivative liabilities	Current derivative liabilities	84	8	58	4	26	4	Current derivative liabilities	71	8	54	4	17	4
Non-current derivative liabilities	Non-current derivative liabilities	11	1	9	—	2	1	Non-current derivative liabilities	27	1	12	—	15	1


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During the ~~six~~nine months ended ~~June~~September 30, 2022, Alliant Energy’s, IPL’s and WPL’s derivative assets increased primarily due to the annual FTR auction operated by MISO and as a result of higher natural gas prices. Alliant Energy’s, IPL’s and WPL’s derivative liabilities increased primarily due to new natural gas contracts entered into in the second quarter of 2022. Based on IPL’s and WPL’s cost recovery mechanisms, the changes in the fair value of derivative liabilities/assets resulted in comparable changes to regulatory assets/liabilities on the balance sheets.

Credit Risk-related Contingent Features - Various agreements contain credit risk-related contingent features, including requirements to maintain certain credit ratings and/or limitations on liability positions under the agreements based on credit ratings. Certain of these agreements with credit risk-related contingency features are accounted for as derivative instruments. In the event of a material change in creditworthiness or if liability positions exceed certain contractual limits, credit support may need to be provided up to the amount of exposure under the contracts, or the contracts may need to be unwound and underlying liability positions paid. At ~~June~~September 30, 2022 and December 31, 2021, the aggregate fair value of all derivative instruments with credit risk-related contingent features in a net liability position was not materially different than amounts that would be required to be posted as credit support to counterparties by Alliant Energy, IPL or WPL if the most restrictive credit risk-related contingent features for derivative agreements in a net liability position were triggered.

Balance Sheet Offsetting - The fair value amounts of derivative instruments subject to a master netting arrangement are not netted by counterparty on the balance sheets. However, if the fair value amounts of derivative instruments by counterparty were netted, ~~amounts would not be materially different from gross amounts of~~ derivative assets and derivative liabilities atrelated to commodity contracts would have been presented on the balance sheets as follows (in millions):


	Alliant Energy		IPL		WPL
	Gross		Gross		Gross
	(as reported)	Net	(as reported)	Net	(as reported)	Net
September 30, 2022
Derivative assets	$360	$308	$202	$165	$158	$143
Derivative liabilities	98	46	66	29	32	17
December 31, 2021
Derivative assets	176	171	84	83	92	88
Derivative liabilities	9	4	4	3	5	1


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~~June 30, 2022 and December 31, 2021.~~ Fair value amounts recognized for the right to reclaim cash collateral (receivable) or the obligation to return cash collateral (payable) are not offset against fair value amounts recognized for derivative instruments executed with the same counterparty under the same master netting arrangement.

NOTE 12. FAIR VALUE MEASUREMENTS

Fair Value of Financial Instruments - The carrying amounts of current assets and current liabilities approximate fair value because of the short maturity of such financial instruments. Carrying amounts and related estimated fair values of other financial instruments were as follows (in millions):

Alliant Energy June 30, 2022 December 31, 2021
Fair Value Fair Value
Carrying Level Level Level Carrying Level Level Level
Amount 1 2 3 Total Amount 1 2 3 Total
Assets:
Money market fund investments $9 $9 $— $— $9 $32 $32 $— $— $32
Derivatives 359 — 272 87 359 176 — 146 30 176
Deferred proceeds 244 — — 244 244 214 — — 214 214
Liabilities:
Derivatives 95 — 80 15 95 9 — 8 1 9
Long-term debt (incl. current maturities) 7,714 — 7,402 1 7,403 7,368 — 8,329 1 8,330

IPL June 30, 2022 December 31, 2021
Fair Value Fair Value
Carrying Level Level Level Carrying Level Level Level
Amount 1 2 3 Total Amount 1 2 3 Total
Assets:
Money market fund investments $9 $9 $— $— $9 $32 $32 $— $— $32
Derivatives 207 — 138 69 207 84 — 65 19 84
Deferred proceeds 244 — — 244 244 214 — — 214 214
Liabilities:
Derivatives 67 — 56 11 67 4 — 3 1 4
Long-term debt 3,645 — 3,445 — 3,445 3,643 — 4,124 — 4,124

WPL June 30, 2022 December 31, 2021
Fair Value Fair Value
Carrying Level Level Level Carrying Level Level Level
Amount 1 2 3 Total Amount 1 2 3 Total
Assets:
Derivatives $152 $— $134 $18 $152 $92 $— $81 $11 $92
Liabilities:
Derivatives 28 — 24 4 28 5 — 5 — 5
Long-term debt (incl. current maturities) 2,430 — 2,370 — 2,370 2,429 — 2,862 — 2,862

~~Information for fair value measurements using significant unobservable inputs (Level 3 inputs) was as follows (in millions):~~

Alliant Energy Commodity Contract Derivative
Assets and (Liabilities), net Deferred Proceeds
Three Months Ended June 30 2022 2021 2022 2021
Beginning balance, April 1 $10 $15 $227 $107
Total net gains (losses) included in changes in net assets (realized/unrealized) (10) 8 — —
Purchases 79 21 — —
Settlements (a) (7) (5) 17 47
Ending balance, June 30 $72 $39 $244 $154
The amount of total net gains (losses) for the period included in changes in net assets attributable to the change in unrealized gains (losses) relating to assets and liabilities held at June 30 ($10) $8 $— $—


Alliant Energy	September 30, 2022					December 31, 2021
		Fair Value					Fair Value
	Carrying	Level	Level	Level		Carrying	Level	Level	Level
	Amount	1	2	3	Total	Amount	1	2	3	Total
Assets:
Money market fund investments	$334	$334	$—	$—	$334	$32	$32	$—	$—	$32
Derivatives	360	—	295	65	360	176	—	146	30	176
Deferred proceeds	248	—	—	248	248	214	—	—	214	214
Liabilities:
Derivatives	98	—	78	20	98	9	—	8	1	9
Long-term debt (incl. current maturities)	8,228	—	7,473	1	7,474	7,368	—	8,329	1	8,330


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Alliant Energy Commodity Contract Derivative
Assets and (Liabilities), net Deferred Proceeds
Six Months Ended June 30 2022 2021 2022 2021
Beginning balance, January 1 $29 $29 $214 $188
Total net gains (losses) included in changes in net assets (realized/unrealized) (16) 1 — —
Purchases 79 21 — —
Settlements (a) (20) (12) 30 (34)
Ending balance, June 30 $72 $39 $244 $154
The amount of total net gains (losses) for the period included in changes in net assets attributable to the change in unrealized gains (losses) relating to assets and liabilities held at June 30 ($16) $1 $— $—
IPL Commodity Contract Derivative
Assets and (Liabilities), net Deferred Proceeds
Three Months Ended June 30 2022 2021 2022 2021
Beginning balance, April 1 $7 $14 $227 $107
Total net gains (losses) included in changes in net assets (realized/unrealized) (3) 4 — —
Purchases 58 16 — —
Settlements (a) (4) (4) 17 47
Ending balance, June 30 $58 $30 $244 $154
The amount of total net gains (losses) for the period included in changes in net assets attributable to the change in unrealized gains (losses) relating to assets and liabilities held at June 30 ($3) $4 $— $—


IPL	September 30, 2022					December 31, 2021
		Fair Value					Fair Value
	Carrying	Level	Level	Level		Carrying	Level	Level	Level
	Amount	1	2	3	Total	Amount	1	2	3	Total
Assets:
Money market fund investments	$39	$39	$—	$—	$39	$32	$32	$—	$—	$32
Derivatives	202	—	150	52	202	84	—	65	19	84
Deferred proceeds	248	—	—	248	248	214	—	—	214	214
Liabilities:
Derivatives	66	—	47	19	66	4	—	3	1	4
Long-term debt	3,645	—	3,228	—	3,228	3,643	—	4,124	—	4,124

IPL Commodity Contract Derivative
Assets and (Liabilities), net Deferred Proceeds
Six Months Ended June 30 2022 2021 2022 2021
Beginning balance, January 1 $18 $26 $214 $188
Total net losses included in changes in net assets (realized/unrealized) (7) (2) — —
Purchases 58 16 — —
Settlements (a) (11) (10) 30 (34)
Ending balance, June 30 $58 $30 $244 $154
The amount of total net losses for the period included in changes in net assets attributable to the change in unrealized losses relating to assets and liabilities held at June 30 ($8) ($2) $— $—


WPL	September 30, 2022					December 31, 2021
		Fair Value					Fair Value
	Carrying	Level	Level	Level		Carrying	Level	Level	Level
	Amount	1	2	3	Total	Amount	1	2	3	Total
Assets:
Money market fund investments	$295	$295	$—	$—	$295	$—	$—	$—	$—	$—
Derivatives	158	—	145	13	158	92	—	81	11	92
Liabilities:
Derivatives	32	—	31	1	32	5	—	5	—	5
Long-term debt (incl. current maturities)	3,019	—	2,778	—	2,778	2,429	—	2,862	—	2,862

WPL Commodity Contract Derivative
Assets and (Liabilities), net
Three Months Ended June 30 2022 2021
Beginning balance, April 1 $3 $1
Total net gains (losses) included in changes in net assets (realized/unrealized) (7) 4
Purchases 21 5
Settlements (3) (1)
Ending balance, June 30 $14 $9
The amount of total net gains (losses) for the period included in changes in net assets attributable to the change in unrealized gains (losses) relating to assets and liabilities held at June 30 ($7) $4

WPL Commodity Contract Derivative
Assets and (Liabilities), net
Six Months Ended June 30 2022 2021
Beginning balance, January 1 $11 $3
Total net gains (losses) included in changes in net assets (realized/unrealized) (9) 3
Purchases 21 5
Settlements (9) (2)
Ending balance, June 30 $14 $9
The amount of total net gains (losses) for the period included in changes in net assets attributable to the change in unrealized gains (losses) relating to assets and liabilities held at June 30 ($8) $3
Information for fair value measurements using significant unobservable inputs (Level 3 inputs) was as follows (in millions):


Alliant Energy	Commodity Contract Derivative
	Assets and (Liabilities), net		Deferred Proceeds
Three Months Ended September 30	2022	2021	2022	2021
Beginning balance, July 1	$72	$39	$244	$154
Total net gains (losses) included in changes in net assets (realized/unrealized)	(1)	5	—	—

Transfers out of Level 3	—	(8)	—	—


Settlements (a)	(26)	(7)	4	10
Ending balance, September 30	$45	$29	$248	$164
The amount of total net gains (losses) for the period included in changes in net assets attributable to the change in unrealized gains (losses) relating to assets and liabilities held at September 30	($1)	$5	$—	$—


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Alliant Energy	Commodity Contract Derivative
	Assets and (Liabilities), net		Deferred Proceeds
Nine Months Ended September 30	2022	2021	2022	2021
Beginning balance, January 1	$29	$29	$214	$188
Total net gains (losses) included in changes in net assets (realized/unrealized)	(17)	6	—	—

Transfers out of Level 3	—	(8)	—	—
Purchases	79	21	—	—

Settlements (a)	(46)	(19)	34	(24)
Ending balance, September 30	$45	$29	$248	$164
The amount of total net gains (losses) for the period included in changes in net assets attributable to the change in unrealized gains (losses) relating to assets and liabilities held at September 30	($17)	$6	$—	$—


IPL	Commodity Contract Derivative
	Assets and (Liabilities), net		Deferred Proceeds
Three Months Ended September 30	2022	2021	2022	2021
Beginning balance, July 1	$58	$30	$244	$154
Total net gains (losses) included in changes in net assets (realized/unrealized)	(6)	2	—	—

Transfers out of Level 3	—	(8)	—	—


Settlements (a)	(19)	(5)	4	10
Ending balance, September 30	$33	$19	$248	$164
The amount of total net gains (losses) for the period included in changes in net assets attributable to the change in unrealized gains (losses) relating to assets and liabilities held at September 30	($6)	$2	$—	$—



IPL	Commodity Contract Derivative
	Assets and (Liabilities), net		Deferred Proceeds
Nine Months Ended September 30	2022	2021	2022	2021
Beginning balance, January 1	$18	$26	$214	$188
Total net losses included in changes in net assets (realized/unrealized)	(13)	—	—	—

Transfers out of Level 3	—	(8)	—	—
Purchases	58	16	—	—

Settlements (a)	(30)	(15)	34	(24)
Ending balance, September 30	$33	$19	$248	$164
The amount of total net losses for the period included in changes in net assets attributable to the change in unrealized losses relating to assets and liabilities held at September 30	($14)	$—	$—	$—


WPL	Commodity Contract Derivative
	Assets and (Liabilities), net
Three Months Ended September 30	2022	2021
Beginning balance, July 1	$14	$9
Total net gains included in changes in net assets (realized/unrealized)	5	3




Settlements	(7)	(2)
Ending balance, September 30	$12	$10
The amount of total net gains for the period included in changes in net assets attributable to the change in unrealized gains relating to assets and liabilities held at September 30	$5	$3


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Table of Contents



WPL	Commodity Contract Derivative
	Assets and (Liabilities), net
Nine Months Ended September 30	2022	2021
Beginning balance, January 1	$11	$3
Total net gains (losses) included in changes in net assets (realized/unrealized)	(4)	6


Purchases	21	5

Settlements	(16)	(4)
Ending balance, September 30	$12	$10
The amount of total net gains (losses) for the period included in changes in net assets attributable to the change in unrealized gains (losses) relating to assets and liabilities held at September 30	($3)	$6

(a)Settlements related to deferred proceeds are due to the change in the carrying amount of receivables sold less the allowance for expected credit losses associated with the receivables sold and cash amounts received from the receivables sold.

Commodity Contracts - The fair value of FTR and natural gas commodity contracts categorized as Level 3 was recognized as net derivative assets (liabilities) as follows (in millions):


		Alliant Energy		IPL		WPL			Alliant Energy		IPL		WPL
		Excluding FTRs	FTRs	Excluding FTRs	FTRs	Excluding FTRs	FTRs		Excluding FTRs	FTRs	Excluding FTRs	FTRs	Excluding FTRs	FTRs
June 30, 2022		($11)	$83	($8)	$66	($3)	$17
September 30, 2022								September 30, 2022	($14)	$59	($15)	$48	$1	$11
December 31, 2021	December 31, 2021	9	20	8	10	1	10	December 31, 2021	9	20	8	10	1	10

NOTE 13. COMMITMENTS AND CONTINGENCIES

NOTE 13(a) Capital Purchase Commitments - Various contractual obligations contain minimum future commitments related to capital expenditures for certain construction projects, including WPL’s expansion of solar generation. At ~~June~~September 30, 2022, Alliant Energy’s and WPL’s minimum future commitments for these projects were ~~$332~~$208 million and ~~$330~~$206 million, respectively.

NOTE 13(b) Other Purchase Commitments - Various commodity supply, transportation and storage contracts help meet obligations to provide electricity and natural gas to utility customers. In addition, there are various purchase commitments associated with other goods and services. At ~~June~~September 30, 2022, related minimum future commitments were as follows (in millions):


		Alliant Energy	IPL	WPL		Alliant Energy	IPL	WPL

Natural gas	Natural gas	$1,396	$691	$705	Natural gas	$1,608	$742	$866
Coal	Coal	148	72	76	Coal	197	95	102
Other (a)	Other (a)	114	57	28	Other (a)	126	57	28
		$1,658	$820	$809		$1,931	$894	$996

(a)Includes individual commitments incurred during the normal course of business that exceeded $1 million at ~~June~~September 30, 2022.

NOTE 13(c) Guarantees and Indemnifications -

Whiting Petroleum - Whiting Petroleum is an independent oil and gas company. In 2004, Alliant Energy sold its remaining interest in Whiting Petroleum. Alliant Energy Resources, LLC, as the successor to a predecessor entity that owned Whiting Petroleum, and a wholly-owned subsidiary of AEF, continues to guarantee the partnership obligations of an affiliate of Whiting Petroleum under multiple general partnership agreements in the oil and gas industry. The guarantees do not include a maximum limit. Based on information made available to Alliant Energy by Whiting Petroleum, the Whiting Petroleum affiliate holds an approximate 6% share in the partnerships, and currently known obligations include costs associated with the future abandonment of certain facilities owned by the partnerships. The general partnerships were formed under California law, and Alliant Energy Resources, LLC may need to perform under the guarantees if the affiliate of Whiting Petroleum is unable to meet its partnership obligations.

As of ~~June~~September 30, 2022, the currently known partnership obligations for the abandonment obligations are estimated at $58 million, which represents Alliant Energy’s currently estimated maximum exposure under the guarantees. Alliant Energy estimates its expected loss to be a portion of the $58 million of known partnership abandonment obligations of the Whiting Petroleum affiliate and the other partners. Alliant Energy is not aware of any material liabilities related to these guarantees that it is probable that it will be obligated to pay; however, as of both ~~June~~September 30, 2022 and December 31, 2021, a liability of $5 million is recorded in “Other liabilities” on Alliant Energy’s balance sheets for expected credit losses related to the contingent obligations that are in the scope of these guarantees.


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Whiting Petroleum completed a business combination with Oasis Petroleum Inc. in July 2022. The combined operations are now known as Chord Energy Corporation. The business combination is not expected to affect the scope of the Whiting Petroleum affiliate’s obligations to Alliant Energy or Alliant Energy’s related guarantees.

Non-utility Wind Farm in Oklahoma - In 2017, a wholly-owned subsidiary of AEF acquired a cash equity ownership interest in a non-utility wind farm located in Oklahoma. The wind farm provides electricity to a third party under a long-term PPA. Alliant Energy provided a parent guarantee of its subsidiary’s indemnification obligations under the related operating agreement and PPA. Alliant Energy’s obligations under the operating agreement were ~~$67~~$59 million as of ~~June~~September 30, 2022 and will reduce annually until expiring in July 2047. Alliant Energy’s obligations under the PPA are subject to a maximum limit of $17 million and expire in December 2031, subject to potential extension. Alliant Energy is not aware of any material liabilities related to this guarantee that it is probable that it will be obligated to pay and therefore has not recognized any material liabilities related to this guarantee as of ~~June~~September 30, 2022 and December 31, 2021.


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~~Table~~ of ~~Contents~~

NOTE 13(d) Environmental Matters -

Manufactured Gas Plant (MGP) Sites - IPL and WPL have current or previous ownership interests in various sites that are previously associated with the production of gas for which IPL and WPL have, or may have in the future, liability for investigation, remediation and monitoring costs. IPL and WPL are working pursuant to the requirements of various federal and state agencies to investigate, mitigate, prevent and remediate, where necessary, the environmental impacts to property, including natural resources, at and around these former MGP sites in order to protect public health and the environment. At ~~June~~September 30, 2022, estimated future costs expected to be incurred for the investigation, remediation and monitoring of the MGP sites, as well as environmental liabilities recorded on the balance sheets for these sites, which are not discounted, were as follows (in millions). At ~~June~~September 30, 2022, such amounts for WPL were not material.


	Alliant Energy			IPL
Range of estimated future costs	$9	-	$25	$6	-	$19
Current and non-current environmental liabilities	$12			$8

IPL Consent Decree - In 2015, the U.S. District Court for the Northern District of Iowa approved a Consent Decree that IPL entered into with the EPA, the Sierra Club, the State of Iowa and Linn County in Iowa, thereby resolving potential Clean Air Act issues associated with emissions from IPL’s coal-fired generating facilities in Iowa. IPL has completed various requirements under the Consent Decree. IPL’s remaining requirements include fuel switching or retiring Prairie Creek Units 1 and 3 by December 31, 2025. Alliant Energy and IPL currently expect to recover material costs incurred by IPL related to compliance with the terms of the Consent Decree from IPL’s electric customers.

Other Environmental Contingencies - In addition to the environmental liabilities discussed above, various environmental rules are monitored that may have a significant impact on future operations. Several of these environmental rules are subject to legal challenges, reconsideration and/or other uncertainties. Given uncertainties regarding the outcome, timing and compliance plans for these environmental matters, the complete financial impact of each of these rules is not able to be determined; however, future capital investments and/or modifications to EGUs and electric and gas distribution systems to comply with certain of these rules could be significant. Specific current, proposed or potential environmental matters include, among others: Effluent Limitation Guidelines, Coal Combustion Residuals Rule, and various legislation and EPA regulations to monitor and regulate the emission of greenhouse gases, including the Clean Air Act.

NOTE 13(e) ~~Collective Bargaining Agreements~~MISO Transmission Owner Return on Equity Complaints -A group of stakeholders, including MISO cooperative and municipal utilities, previously filed complaints with FERC requesting a reduction to the base return on equity authorized for MISO transmission owners, including ITC Midwest LLC and ATC. In ~~May~~2019, FERC issued an order on the previously filed complaints and reduced the base return on equity authorized for the MISO transmission owners to 9.88% for November 12, 2013 through February 11, 2015, and subsequent to September 28, 2016. In 2020, FERC issued orders in response to various rehearing requests and increased the base return on equity authorized for the MISO transmission owners from 9.88% to 10.02% for November 12, 2013 through February 11, 2015, and subsequent to September 28, 2016. In August 2022, ~~WPL’s collective bargaining agreement with International Brotherhood~~the U.S. Court of ~~Electrical Workers Local 965 expired~~Appeals for the District of Columbia Circuit vacated FERC’s prior orders that established the base return on equity authorized for the MISO transmission owners and remanded the cases to FERC for further proceedings, which may result in additional changes to the base return on equity authorized for the MISO transmission owners. As a ~~new agreement was reached, which expires May 31, 2026.~~result of the August 2022 court decision, Alliant Energy recorded a $5 million reduction in “Equity income from unconsolidated investments” in its income statement for the three and nine months ended September 30, 2022 to reflect the anticipated reduction in the base return on equity authorized for the MISO transmission owners. Any further changes in FERC’s decisions may have an impact on Alliant Energy’s share of ATC’s future earnings and customer costs.


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Table of Contents

NOTE 14. SEGMENTS OF BUSINESS

Certain financial information relating to Alliant Energy’s, IPL’s and WPL’s business segments is as follows. Intersegment revenues were not material to their respective operations.


Alliant Energy	Alliant Energy					ATC Holdings,	Alliant	Alliant Energy					ATC Holdings,	Alliant
		Utility				Non-Utility,	Energy		Utility				Non-Utility,	Energy
		Electric	Gas	Other	Total	Parent and Other	Consolidated		Electric	Gas	Other	Total	Parent and Other	Consolidated
		(in millions)							(in millions)
Three Months Ended June 30, 2022
Three Months Ended September 30, 2022								Three Months Ended September 30, 2022
Revenues	Revenues	$812	$94	$13	$919	$24	$943	Revenues	$1,039	$62	$11	$1,112	$23	$1,135
Operating income		195	8	1	204	8	212
Net income attributable to Alliant Energy common shareowners					150	9	159
Three Months Ended June 30, 2021
Operating income (loss)								Operating income (loss)	304	(3)	1	302	7	309
Net income (loss) attributable to Alliant Energy common shareowners								Net income (loss) attributable to Alliant Energy common shareowners				245	(18)	227
Three Months Ended September 30, 2021								Three Months Ended September 30, 2021
Revenues	Revenues	$717	$69	$10	$796	$21	$817	Revenues	$939	$50	$13	$1,002	$22	$1,024
Operating income (loss)	Operating income (loss)	164	3	(1)	166	10	176	Operating income (loss)	290	(5)	(5)	280	9	289
Net income attributable to Alliant Energy common shareowners	Net income attributable to Alliant Energy common shareowners				124	20	144	Net income attributable to Alliant Energy common shareowners				250	6	256



Alliant Energy					ATC Holdings,	Alliant
	Utility				Non-Utility,	Energy
	Electric	Gas	Other	Total	Parent and Other	Consolidated
	(in millions)
Nine Months Ended September 30, 2022
Revenues	$2,624	$418	$35	$3,077	$70	$3,147
Operating income	680	62	4	746	23	769
Net income attributable to Alliant Energy common shareowners				574	5	579
Nine Months Ended September 30, 2021
Revenues	$2,357	$289	$36	$2,682	$60	$2,742
Operating income (loss)	601	42	(4)	639	24	663
Net income attributable to Alliant Energy common shareowners				537	34	571


IPL	Electric	Gas	Other	Total
	(in millions)
Three Months Ended September 30, 2022
Revenues	$596	$33	$11	$640
Operating income (loss)	174	(3)	—	171
Net income available for common stock				154
Three Months Ended September 30, 2021
Revenues	$555	$31	$13	$599
Operating income (loss)	186	(3)	(3)	180
Net income available for common stock				157
Nine Months Ended September 30, 2022
Revenues	$1,438	$224	$34	$1,696
Operating income	353	33	3	389
Net income available for common stock				327
Nine Months Ended September 30, 2021
Revenues	$1,343	$165	$35	$1,543
Operating income (loss)	365	30	(1)	394
Net income available for common stock				322


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Table of Contents

Alliant Energy ATC Holdings, Alliant
Utility Non-Utility, Energy
Electric Gas Other Total Parent and Other Consolidated
(in millions)
Six Months Ended June 30, 2022
Revenues $1,586 $356 $23 $1,965 $47 $2,012
Operating income 376 65 4 445 15 460
Net income attributable to Alliant Energy common shareowners 329 22 351
Six Months Ended June 30, 2021
Revenues $1,418 $239 $23 $1,680 $38 $1,718
Operating income 311 47 1 359 15 374
Net income attributable to Alliant Energy common shareowners 287 28 315

IPL Electric Gas Other Total
(in millions)
Three Months Ended June 30, 2022
Revenues $442 $52 $12 $506
Operating income 104 4 1 109
Net income available for common stock 87
Three Months Ended June 30, 2021
Revenues $402 $43 $10 $455
Operating income 107 3 1 111
Net income available for common stock 86
Six Months Ended June 30, 2022
Revenues $843 $191 $22 $1,056
Operating income 179 36 3 218
Net income available for common stock 173
Six Months Ended June 30, 2021
Revenues $788 $134 $22 $944
Operating income 179 33 2 214
Net income available for common stock 165


WPL	WPL	Electric	Gas	Other	Total	WPL	Electric	Gas	Other	Total
		(in millions)					(in millions)
Three Months Ended June 30, 2022
Three Months Ended September 30, 2022						Three Months Ended September 30, 2022
Revenues	Revenues	$370	$42	$1	$413	Revenues	$443	$29	$—	$472
Operating income	Operating income	91	4	—	95	Operating income	130	—	1	131
Net income	Net income				63	Net income				91
Three Months Ended June 30, 2021
Three Months Ended September 30, 2021						Three Months Ended September 30, 2021
Revenues	Revenues	$315	$26	$—	$341	Revenues	$384	$19	$—	$403
Operating income (loss)	Operating income (loss)	57	—	(2)	55	Operating income (loss)	104	(2)	(2)	100
Net income	Net income				38	Net income				93
Six Months Ended June 30, 2022
Nine Months Ended September 30, 2022						Nine Months Ended September 30, 2022
Revenues	Revenues	$743	$165	$1	$909	Revenues	$1,186	$194	$1	$1,381
Operating income	Operating income	197	29	1	227	Operating income	327	29	1	357
Net income	Net income				156	Net income				247
Six Months Ended June 30, 2021
Nine Months Ended September 30, 2021						Nine Months Ended September 30, 2021
Revenues	Revenues	$630	$105	$1	$736	Revenues	$1,014	$124	$1	$1,139
Operating income (loss)	Operating income (loss)	132	14	(1)	145	Operating income (loss)	236	12	(3)	245
Net income	Net income				122	Net income				215


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~~Table~~ of ~~Contents~~

NOTE 15. RELATED PARTIES

Service Agreements - Pursuant to service agreements, IPL and WPL receive various administrative and general services from an affiliate, Corporate Services. These services are billed to IPL and WPL at cost based on expenses incurred by Corporate Services for the benefit of IPL and WPL, respectively. These costs consisted primarily of employee compensation and benefits, fees associated with various professional services, depreciation and amortization of property, plant and equipment, and a return on net assets. Corporate Services also acts as agent on behalf of IPL and WPL pursuant to the service agreements. As agent, Corporate Services enters into energy, capacity, ancillary services, and transmission sale and purchase transactions within MISO. Corporate Services assigns such sales and purchases among IPL and WPL based on statements received from MISO. The amounts billed for services provided, sales credited and purchases for the three and ~~six~~nine months ended ~~June~~September 30 were as follows (in millions):


		IPL				WPL					IPL				WPL
		Three Months		Six Months		Three Months		Six Months			Three Months		Nine Months		Three Months		Nine Months
		2022	2021	2022	2021	2022	2021	2022	2021		2022	2021	2022	2021	2022	2021	2022	2021
Corporate Services billings	Corporate Services billings	$51	$48	$91	$88	$42	$41	$78	$76	Corporate Services billings	$45	$50	$136	$138	$39	$37	$117	$113
Sales credited	Sales credited	—	4	—	5	13	6	31	7	Sales credited	11	4	11	9	31	16	62	23
Purchases billed	Purchases billed	129	99	223	242	39	21	61	47	Purchases billed	119	105	342	347	42	24	103	71

Net intercompany payables to Corporate Services were as follows (in millions):

IPL WPL
June 30, 2022 December 31, 2021 June 30, 2022 December 31, 2021
Net payables to Corporate Services $112 $110 $63 $83

IPL

WPL

September 30, 2022

December 31, 2021

September 30, 2022

December 31, 2021

Net payables to Corporate Services

$113

$110

$88

$83

ATC - Pursuant to various agreements, WPL receives a range of transmission services from ATC. WPL provides operation, maintenance, and construction services to ATC. WPL and ATC also bill each other for use of shared facilities owned by each party. The related amounts billed between the parties for the three and ~~six~~nine months ended ~~June~~September 30 were as follows (in millions):


		Three Months		Six Months			Three Months		Nine Months
		2022	2021	2022	2021		2022	2021	2022	2021
ATC billings to WPL	ATC billings to WPL	$35	$30	$69	$62	ATC billings to WPL	$38	$29	$107	$91
WPL billings to ATC	WPL billings to ATC	5	6	8	9	WPL billings to ATC	6	4	14	13

WPL owed ATC net amounts of $9 million as of ~~June~~September 30, 2022 and $10 million as of December 31, 2021.

ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

This MDA includes information relating to Alliant Energy, and IPL and WPL (collectively, the Utilities), as well as ATC Holdings, AEF and Corporate Services. Where appropriate, information relating to a specific entity has been segregated and labeled as such. The following discussion and analysis should be read in conjunction with the Financial Statements and the Notes included in this report, as well as the financial statements, notes and MDA included in the 2021 Form 10-K. Unless otherwise noted, all “per share” references in MDA refer to earnings per diluted share.


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2022 HIGHLIGHTS

Key highlights since the filing of the 2021 Form 10-K include the following:

Customer Investments:

•In response to a petition from a U.S.-based solar panel assembler, in March 2022, the U.S. Department of Commerce initiated an investigation into whether the sourcing of solar project materials and equipment from certain Southeast Asian countries circumvent tariffs and duties imposed on such materials and equipment imported from China. In June 2022, a presidential executive order postponed through 2024 any additional tariffs on solar project materials and equipment while the U.S. Department of Commerce completes its investigation. Alliant Energy, IPL and WPL are currently unable to predict with certainty the future outcome or impact of these matters, including from any related legal challenges; however, this could result in delays and/or higher costs for IPL’s and WPL’s planned development and acquisition of additional renewable energy, and impact Alliant Energy’s, IPL’s and WPL’s anticipated future construction and acquisition expenditures.

•In June 2022, the PSCW issued an order approving WPL’s second certificate of authority to acquire, construct, own, and operate up to 414 MW of new solar generation in the following Wisconsin counties: Dodge (150 MW), Waushara (99 MW), Rock (65 MW), Grant (50 MW) and Green (50 MW).


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~~Table~~ of ~~Contents~~

•In June 2022, IPL filed for a revised fixed cost cap of $1,934/kilowatt with the IUB related to IPL’s November 2021 advance rate-making principles filing for up to 400 MW of solar generation with in-service dates in 2023 and 2024 and approximately 75 MW of battery storage in 2024, which reflects higher materials, labor and shipping costs. The revised fixed cost cap includes allowance for funds used during construction and transmission upgrade costs among other costs. In September 2022, IPL provided the IUB with a summary of the Inflation Reduction Act of 2022, as well as an economic analysis indicating full ownership for its planned solar and battery storage projects is currently expected to result in lower costs ~~and excludes estimated~~for its customers compared to previous plans to utilize tax equity ~~partner contributions.~~financing. IPL currently expects a decision from the IUB on its filing by the end of 2022.

•In August 2022, FERC approved MISO’s proposal to change its methodology for procuring capacity in the energy market effective with the 2023/2024 MISO Planning Year, as a result of changes in the overall generation resource mix due to the shift to renewable generation and the retirement of certain fossil-fueled generation. The capacity construct will change from the current Summer-based annual construct to four distinct seasons to help ensure the continued reliability of the electric transmission grid. FERC’s approval also includes establishing planning reserve margin requirements for all market participants on a seasonal basis and determining a seasonal accredited capacity value for certain classes of generating resources, including higher accredited capacity for wind generation during the Spring, Fall and Winter seasons and lower accredited capacity for solar generation during the Winter season. Alliant Energy, IPL and WPL are currently unable to predict with certainty the future outcome or impact of these matters, but anticipate additional generating resources will be needed to comply with the requirements of the new capacity construct. Refer to “Liquidity and Capital Resources” for discussion of proposed changes to IPL’s and WPL’s current resource plans resulting from these matters.

•In September 2022, WPL filed a request with the PSCW for approval to construct, own and operate 175 MW of battery storage, with 100 MW and 75 MW at the Grant County and Wood County solar projects, respectively. Estimated capital expenditures for these planned projects for 2023 through 2025 are included in the “Renewables and battery storage” line in the construction and acquisition table in “Liquidity and Capital Resources.”

•In September 2022, after the enactment of the Inflation Reduction Act of 2022, WPL informed the PSCW of its decision to retain full ownership of its planned solar projects instead of financing a portion of the projects with tax equity partners, which is currently expected to result in lower costs for its customers compared to previous plans to utilize tax equity financing.

•In September 2022, WPL completed the construction of the Bear Creek Solar Garden in Richland County, Wisconsin (50 MW).

•In October 2022, WPL completed the construction of the North Rock Solar Garden in Rock County, Wisconsin (50 MW).

•Refer to Note 3 for discussion of revised expected timing for the retirements of various IPL and WPL coal-fired EGUs.

•~~Refer to Notes~~ ~~1(b)~~ ~~and~~ 6 ~~for discussion of contributions to the joint venture associated with certain WPL solar generation projects made in the second quarter of 2022 by WPL and the tax equity partner.~~

Rate Matters:

•In June 2022, WPL filed a limited reopener request with the PSCW to increase annual retail gas rates for the 2023 forward-looking Test Period by approximately $10 million, which reflects changes in weighted average cost of capital, updated depreciation rates and modifications to certain regulatory asset and regulatory liability amortizations. In July 2022, WPL filed a request with the PSCW to decrease annual retail electric rates by approximately $37 million effective January 1, 2023, which reflects a change in expected fuel-related costs in 2023. WPL currently expects ~~decisions~~a decision from the PSCW on its ~~requests~~request by the end of 2022.

•In August 2022, the PSCW authorized WPL to collect $37 million in 2023 from its retail electric customers, plus interest, for an under-collection of fuel-related costs incurred by WPL in 2021 that were higher than fuel-related costs used to determine rates for such period. In addition, in November 2022, WPL filed updated fuel-related cost information for 2023 with the PSCW, which reflects an increase in annual retail electric rates of approximately $63 million in 2023 compared to WPL’s approved 2022 fuel-related costs. WPL currently expects a decision from the PSCW on its request by the end of 2022.


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•WPL currently expects to file a retail electric and gas rate review with the PSCW in the second quarter of 2023 for the 2024/2025 forward-looking Test Period. The key drivers for the anticipated filing include revenue requirement impacts of increasing electric and gas rate base, including investments in solar generation and battery storage. Any rate changes granted from this pending request are expected to be effective on January 1, 2024, with a decision from the PSCW expected by the end of 2023.

•IPL currently expects to file a retail electric and gas rate review with the IUB by the first half of 2024. The key drivers for the anticipated filing include revenue requirement impacts of increasing electric and gas rate base, including investments in solar generation and battery storage.

Legislative Matters:

•Refer to Note 9 for discussion of Iowa tax reform enacted in March 2022.

•In August 2022, the Inflation Reduction Act of 2022 was enacted. The most significant provisions of the new legislation for Alliant Energy, IPL and WPL relate to a 10-year extension of tax credits for clean energy projects, a new production tax credit eligible for solar projects, a new stand-alone investment tax credit for battery storage projects and the right to transfer future renewable credits to other corporate taxpayers. The new legislation also includes a requirement for corporations with income over $1 billion to pay a 15% minimum tax; however, Alliant Energy is currently below this income level. Alliant Energy, IPL and WPL currently expect to utilize various provisions of the new legislation to enhance the tax benefits expected from their announced approximately 1,500 MW of solar and 250 MW of battery storage projects, including transferring the future tax credits from such projects to other corporate taxpayers and opting to retain full ownership of such projects instead of financing a portion of the projects with tax equity partners. Compared to previous plans to utilize tax equity financing, the impact of these changes is expected to result in lower costs for IPL's and WPL's customers, higher rate base amounts, additional financing needs expected to be satisfied with additional long-term debt and common stock issuances, and improvements in long-term cash flows over the life of the solar and battery storage projects.

Financings and Common Stock Dividends:

•Refer to “Results of Operations” for discussion of expected future issuances of common stock and common stock dividends, and expected future issuances and retirements of long-term debt, by the end of 2023.

RESULTS OF OPERATIONS

Results of operations include financial information prepared in accordance with GAAP as well as utility electric margins and utility gas margins, which are not measures of financial performance under GAAP. Utility electric margins are defined as electric revenues less electric production fuel, purchased power and electric transmission service expenses. Utility gas margins are defined as gas revenues less cost of gas sold. Utility electric margins and utility gas margins are non-GAAP financial measures because they exclude other utility and non-utility revenues, other operation and maintenance expenses, depreciation and amortization expenses, and taxes other than income tax expense.

Management believes that utility electric and gas margins provide a meaningful basis for evaluating and managing utility operations since electric production fuel, purchased power and electric transmission service expenses and cost of gas sold are generally passed through to customers, and therefore, result in changes to electric and gas revenues that are comparable to changes in such expenses. The presentation of utility electric and gas margins herein is intended to provide supplemental information for investors regarding operating performance. These utility electric and gas margins may not be comparable to how other entities define utility electric and gas margin. Furthermore, these measures are not intended to replace operating income as determined in accordance with GAAP as an indicator of operating performance.

Additionally, the table below includes EPS for Utilities and Corporate Services, ATC Holdings, and Non-utility and Parent, which are non-GAAP financial measures. Alliant Energy believes these non-GAAP financial measures are useful to investors because they facilitate an understanding of segment performance and trends, and provide additional information about Alliant Energy’s operations on a basis consistent with the measures that management uses to manage its operations and evaluate its performance.

Financial Results Overview - Alliant Energy’s net income ~~(loss)~~ and EPS attributable to Alliant Energy common shareowners for the three months ended ~~June~~September 30 were as follows (dollars in millions, except per share amounts):


		2022		2021			2022		2021
		Income (Loss)	EPS	Income	EPS		Income (Loss)	EPS	Income (Loss)	EPS

Utilities and Corporate Services	Utilities and Corporate Services	$154	$0.61	$128	$0.51	Utilities and Corporate Services	$249	$0.99	$254	$1.01
ATC Holdings	ATC Holdings	8	0.03	8	0.03	ATC Holdings	5	0.02	8	0.03
Non-utility and Parent	Non-utility and Parent	(3)	(0.01)	8	0.03	Non-utility and Parent	(27)	(0.11)	(6)	(0.02)

Alliant Energy Consolidated	Alliant Energy Consolidated	$159	$0.63	$144	$0.57	Alliant Energy Consolidated	$227	$0.90	$256	$1.02

Alliant Energy’s Utilities and Corporate Services net income ~~increased~~decreased by ~~$26~~$5 million for the three-month period, primarily due to higher ~~AFUDC, timing of income tax~~interest expense and ~~higher temperature-normalized sales. These items were partially offset by higher interest expense.~~

~~Alliant Energy’s Non-utility and Parent net income decreased by $11 million for the three-month period primarily due to~~ the timing of income taxes.


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Alliant Energy’s Non-utility and Parent net income decreased by $21 million for the three-month period, primarily due to higher interest expense, the timing of income taxes and the impact of the Iowa corporate income tax rate change.

For the three and ~~six~~nine months ended ~~June~~September 30, operating income and a reconciliation of utility electric and gas margins to the most directly comparable GAAP measure, operating income, was as follows (in millions):


		Alliant Energy		IPL		WPL			Alliant Energy		IPL		WPL
Three Months	Three Months	2022	2021	2022	2021	2022	2021	Three Months	2022	2021	2022	2021	2022	2021
Operating income	Operating income	$212	$176	$109	$111	$95	$55	Operating income	$309	$289	$171	$180	$131	$100
Electric utility revenues	Electric utility revenues	$812	$717	$442	$402	$370	$315	Electric utility revenues	$1,039	$939	$596	$555	$443	$384
Electric production fuel and purchased power expenses	Electric production fuel and purchased power expenses	(191)	(138)	(83)	(55)	(108)	(84)	Electric production fuel and purchased power expenses	(274)	(207)	(140)	(101)	(134)	(105)
Electric transmission service expense	Electric transmission service expense	(133)	(121)	(91)	(79)	(41)	(42)	Electric transmission service expense	(157)	(148)	(115)	(103)	(42)	(44)
Utility Electric Margin (non-GAAP)	Utility Electric Margin (non-GAAP)	488	458	268	268	221	189	Utility Electric Margin (non-GAAP)	608	584	341	351	267	235
Gas utility revenues	Gas utility revenues	94	69	52	43	42	26	Gas utility revenues	62	50	33	31	29	19
Cost of gas sold	Cost of gas sold	(48)	(31)	(27)	(22)	(21)	(9)	Cost of gas sold	(26)	(18)	(14)	(12)	(13)	(6)
Utility Gas Margin (non-GAAP)	Utility Gas Margin (non-GAAP)	46	38	25	21	21	17	Utility Gas Margin (non-GAAP)	36	32	19	19	16	13
Other utility revenues	Other utility revenues	13	10	12	10	1	—	Other utility revenues	11	13	11	13	—	—
Non-utility revenues	Non-utility revenues	24	21	—	—	—	—	Non-utility revenues	23	22	—	—	—	—
Other operation and maintenance expenses	Other operation and maintenance expenses	(166)	(160)	(87)	(81)	(67)	(69)	Other operation and maintenance expenses	(172)	(171)	(90)	(95)	(70)	(66)
Depreciation and amortization expenses	Depreciation and amortization expenses	(166)	(165)	(95)	(93)	(69)	(70)	Depreciation and amortization expenses	(169)	(165)	(95)	(94)	(71)	(70)
Taxes other than income tax expense	Taxes other than income tax expense	(27)	(26)	(14)	(14)	(12)	(12)	Taxes other than income tax expense	(28)	(26)	(15)	(14)	(11)	(12)
Operating income	Operating income	$212	$176	$109	$111	$95	$55	Operating income	$309	$289	$171	$180	$131	$100


		Alliant Energy		IPL		WPL			Alliant Energy		IPL		WPL
Six Months		2022	2021	2022	2021	2022	2021
Nine Months								Nine Months	2022	2021	2022	2021	2022	2021
Operating income	Operating income	$460	$374	$218	$214	$227	$145	Operating income	$769	$663	$389	$394	$357	$245
Electric utility revenues	Electric utility revenues	$1,586	$1,418	$843	$788	$743	$630	Electric utility revenues	$2,624	$2,357	$1,438	$1,343	$1,186	$1,014
Electric production fuel and purchased power expenses	Electric production fuel and purchased power expenses	(359)	(271)	(150)	(114)	(209)	(158)	Electric production fuel and purchased power expenses	(633)	(478)	(290)	(215)	(343)	(263)
Electric transmission service expense	Electric transmission service expense	(271)	(255)	(188)	(171)	(83)	(84)	Electric transmission service expense	(428)	(403)	(303)	(274)	(125)	(128)
Utility Electric Margin (non-GAAP)	Utility Electric Margin (non-GAAP)	956	892	505	503	451	388	Utility Electric Margin (non-GAAP)	1,563	1,476	845	854	718	623
Gas utility revenues	Gas utility revenues	356	239	191	134	165	105	Gas utility revenues	418	289	224	165	194	124
Cost of gas sold	Cost of gas sold	(216)	(131)	(112)	(72)	(104)	(59)	Cost of gas sold	(242)	(149)	(126)	(84)	(117)	(65)
Utility Gas Margin (non-GAAP)	Utility Gas Margin (non-GAAP)	140	108	79	62	61	46	Utility Gas Margin (non-GAAP)	176	140	98	81	77	59
Other utility revenues	Other utility revenues	23	23	22	22	1	1	Other utility revenues	35	36	34	35	1	1
Non-utility revenues	Non-utility revenues	47	38	—	—	—	—	Non-utility revenues	70	60	—	—	—	—
Other operation and maintenance expenses	Other operation and maintenance expenses	(320)	(306)	(171)	(158)	(123)	(128)	Other operation and maintenance expenses	(492)	(477)	(260)	(253)	(193)	(194)
Depreciation and amortization expenses	Depreciation and amortization expenses	(332)	(329)	(189)	(187)	(139)	(139)	Depreciation and amortization expenses	(501)	(494)	(285)	(281)	(211)	(209)
Taxes other than income tax expense	Taxes other than income tax expense	(54)	(52)	(28)	(28)	(24)	(23)	Taxes other than income tax expense	(82)	(78)	(43)	(42)	(35)	(35)
Operating income	Operating income	$460	$374	$218	$214	$227	$145	Operating income	$769	$663	$389	$394	$357	$245

Operating Income Variances - Variances between periods in operating income for the three and ~~six~~nine months ended ~~June~~September 30, 2022 compared to the same periods in 2021 were as follows (in millions):


		Three Months			Six Months				Three Months			Nine Months
		Alliant Energy	IPL	WPL	Alliant Energy	IPL	WPL		Alliant Energy	IPL	WPL	Alliant Energy	IPL	WPL
Total higher utility electric margin variance (Refer to details below)		$30	$—	$32	$64	$2	$63
Total higher (lower) utility electric margin variance (Refer to details below)								Total higher (lower) utility electric margin variance (Refer to details below)	$24	($10)	$32	$87	($9)	$95
Total higher utility gas margin variance (Refer to details below)	Total higher utility gas margin variance (Refer to details below)	8	4	4	32	17	15	Total higher utility gas margin variance (Refer to details below)	4	—	3	36	17	18
Total (higher) lower other operation and maintenance expenses variance (Refer to details below)	Total (higher) lower other operation and maintenance expenses variance (Refer to details below)	(6)	(6)	2	(14)	(13)	5	Total (higher) lower other operation and maintenance expenses variance (Refer to details below)	(1)	5	(4)	(15)	(7)	1

Total higher depreciation and amortization expense								Total higher depreciation and amortization expense	(4)	(1)	(1)	(7)	(4)	(2)
Other	Other	4	—	2	4	(2)	(1)	Other	(3)	(3)	1	5	(2)	—
		$36	($2)	$40	$86	$4	$82		$20	($9)	$31	$106	($5)	$112


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Electric and Gas Revenues and Sales Summary - Electric and gas revenues (in millions), and MWh and Dth sales (in thousands), for the three and ~~six~~nine months ended ~~June~~September 30 were as follows:


Alliant Energy	Alliant Energy	Electric				Gas				Alliant Energy	Electric				Gas
		Revenues		MWhs Sold		Revenues		Dths Sold			Revenues		MWhs Sold		Revenues		Dths Sold
		2022	2021	2022	2021	2022	2021	2022	2021		2022	2021	2022	2021	2022	2021	2022	2021
Three Months	Three Months									Three Months
Retail	Retail	$729	$643	6,127	5,959	$81	$61	7,605	6,604	Retail	$908	$845	6,788	7,031	$50	$40	3,584	3,264
Sales for resale	Sales for resale	69	58	1,456	1,487	N/A	N/A	N/A	N/A	Sales for resale	115	78	1,759	1,853	N/A	N/A	N/A	N/A
Transportation/Other	Transportation/Other	14	16	15	16	13	8	22,382	23,056	Transportation/Other	16	16	16	18	12	10	30,982	26,365
		$812	$717	7,598	7,462	$94	$69	29,987	29,660		$1,039	$939	8,563	8,902	$62	$50	34,566	29,629
Six Months
Nine Months										Nine Months
Retail	Retail	$1,420	$1,279	12,516	12,231	$330	$218	33,701	30,035	Retail	$2,327	$2,124	19,304	19,262	$379	$258	37,284	33,299
Sales for resale	Sales for resale	137	103	3,402	2,558	N/A	N/A	N/A	N/A	Sales for resale	251	181	5,161	4,411	N/A	N/A	N/A	N/A
Transportation/Other	Transportation/Other	29	36	31	35	26	21	52,260	47,746	Transportation/Other	46	52	46	53	39	31	83,241	74,111
		$1,586	$1,418	15,949	14,824	$356	$239	85,961	77,781		$2,624	$2,357	24,511	23,726	$418	$289	120,525	107,410


IPL	IPL	Electric				Gas				IPL	Electric				Gas
		Revenues		MWhs Sold		Revenues		Dths Sold			Revenues		MWhs Sold		Revenues		Dths Sold
		2022	2021	2022	2021	2022	2021	2022	2021		2022	2021	2022	2021	2022	2021	2022	2021
Three Months	Three Months									Three Months
Retail	Retail	$421	$373	3,434	3,314	$44	$38	3,778	3,428	Retail	$559	$525	3,736	3,914	$25	$25	1,739	1,702
Sales for resale	Sales for resale	13	17	422	386	N/A	N/A	N/A	N/A	Sales for resale	28	21	581	487	N/A	N/A	N/A	N/A
Transportation/Other	Transportation/Other	8	12	8	7	8	5	10,154	9,241	Transportation/Other	9	9	9	9	8	6	9,743	9,308
		$442	$402	3,864	3,707	$52	$43	13,932	12,669		$596	$555	4,326	4,410	$33	$31	11,482	11,010
Six Months
Nine Months										Nine Months
Retail	Retail	$800	$734	7,085	6,896	$174	$120	17,380	15,566	Retail	$1,358	$1,259	10,821	10,810	$199	$145	19,118	17,268
Sales for resale	Sales for resale	26	28	1,019	673	N/A	N/A	N/A	N/A	Sales for resale	53	49	1,600	1,160	N/A	N/A	N/A	N/A
Transportation/Other	Transportation/Other	17	26	16	17	17	14	22,174	20,419	Transportation/Other	27	35	25	26	25	20	31,917	29,727
		$843	$788	8,120	7,586	$191	$134	39,554	35,985		$1,438	$1,343	12,446	11,996	$224	$165	51,035	46,995


WPL	WPL	Electric				Gas				WPL	Electric				Gas
		Revenues		MWhs Sold		Revenues		Dths Sold			Revenues		MWhs Sold		Revenues		Dths Sold
		2022	2021	2022	2021	2022	2021	2022	2021		2022	2021	2022	2021	2022	2021	2022	2021
Three Months	Three Months									Three Months
Retail	Retail	$308	$270	2,693	2,645	$37	$23	3,827	3,176	Retail	$349	$320	3,052	3,117	$25	$15	1,845	1,562
Sales for resale	Sales for resale	56	41	1,034	1,101	N/A	N/A	N/A	N/A	Sales for resale	87	57	1,178	1,366	N/A	N/A	N/A	N/A
Transportation/Other	Transportation/Other	6	4	7	9	5	3	12,228	13,815	Transportation/Other	7	7	7	9	4	4	21,239	17,057
		$370	$315	3,734	3,755	$42	$26	16,055	16,991		$443	$384	4,237	4,492	$29	$19	23,084	18,619
Six Months
Nine Months										Nine Months
Retail	Retail	$620	$545	5,431	5,335	$156	$98	16,321	14,469	Retail	$969	$865	8,483	8,452	$180	$113	18,166	16,031
Sales for resale	Sales for resale	111	75	2,383	1,885	N/A	N/A	N/A	N/A	Sales for resale	198	132	3,561	3,251	N/A	N/A	N/A	N/A
Transportation/Other	Transportation/Other	12	10	15	18	9	7	30,086	27,327	Transportation/Other	19	17	21	27	14	11	51,324	44,384
		$743	$630	7,829	7,238	$165	$105	46,407	41,796		$1,186	$1,014	12,065	11,730	$194	$124	69,490	60,415

Sales Trends and Temperatures - Alliant Energy’s retail electric ~~and gas~~ sales volumes ~~increased~~decreased 3% and ~~15%, respectively,~~were unchanged for the three and nine months ended ~~June~~September 30, 2022 compared to the same ~~period~~periods in 2021, respectively, primarily due to ~~COVID-19 impacts~~changes in ~~2021~~sales volumes of commercial and ~~increases in the number of retail~~industrial customers due to standby service customers that can use other generation, as well as maintenance outages at certain large customers. Alliant Energy’s retail ~~electric and~~ gas sales volumes increased 2%10% and 12%~~, respectively,~~ for the ~~six~~three and nine months ended ~~June~~September 30, 2022 compared to the same ~~period~~periods in 2021, respectively, primarily due to changes in temperatures ~~COVID-19 impacts in 2021~~ and increases in the number of retail customers.


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Estimated increases (decreases) to electric and gas margins from the impacts of temperatures for the three and ~~six~~nine months ended ~~June~~September 30 were as follows (in millions):

Electric Margins Gas Margins
Three Months Six Months Three Months Six Months
2022 2021 Change 2022 2021 Change 2022 2021 Change 2022 2021 Change
IPL $7 $9 ($2) $11 $11 $— $2 $— $2 $4 $2 $2
WPL 8 8 — 10 9 1 — — — 2 — 2
Total Alliant Energy $15 $17 ($2) $21 $20 $1 $2 $— $2 $6 $2 $4


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	Electric Margins						Gas Margins
	Three Months			Nine Months			Three Months			Nine Months
	2022	2021	Change	2022	2021	Change	2022	2021	Change	2022	2021	Change
IPL	$4	$5	($1)	$15	$16	($1)	$—	($1)	$1	$4	$1	$3
WPL	—	—	—	10	9	1	—	—	—	2	—	2
Total Alliant Energy	$4	$5	($1)	$25	$25	$—	$—	($1)	$1	$6	$1	$5

Electric Sales for Resale - Electric sales for resale volume changes were largely due to changes in sales in the wholesale energy markets operated by MISO. These changes are impacted by several factors, including the availability and dispatch of Alliant Energy’s EGUs and electricity demand within these wholesale energy markets. Changes in sales for resale revenues were largely offset by changes in fuel-related costs, and therefore, did not have a significant impact on electric margins.

Gas Transportation/Other - Gas transportation/other sales volume changes were largely due to changes in the gas volumes supplied to Alliant Energy’s natural gas-fired EGUs caused by the availability and dispatch of such EGUs. Changes in these transportation/other revenues did not have a significant impact on gas margins.

Utility Electric Margin Variances - The following items contributed to increased (decreased) utility electric margins for the three and ~~six~~nine months ended ~~June~~September 30, 2022 compared to the same periods in 2021 as follows (in millions):


		Three Months			Six Months				Three Months			Nine Months
		Alliant Energy	IPL	WPL	Alliant Energy	IPL	WPL		Alliant Energy	IPL	WPL	Alliant Energy	IPL	WPL
Higher revenue requirements at WPL due to increasing rate base (a)	Higher revenue requirements at WPL due to increasing rate base (a)	$26	$—	$26	$53	$—	$53	Higher revenue requirements at WPL due to increasing rate base (a)	$32	$—	$32	$85	$—	$85

Higher revenues at IPL due to changes in credits on customers’ bills related to excess deferred income tax benefits amortization through the tax benefit rider (offset by changes in income tax)	Higher revenues at IPL due to changes in credits on customers’ bills related to excess deferred income tax benefits amortization through the tax benefit rider (offset by changes in income tax)	5	5	—	11	11	—	Higher revenues at IPL due to changes in credits on customers’ bills related to excess deferred income tax benefits amortization through the tax benefit rider (offset by changes in income tax)	—	—	—	11	11	—

Lower revenues at IPL due to changes in the renewable energy rider (mostly offset by changes in income tax)	Lower revenues at IPL due to changes in the renewable energy rider (mostly offset by changes in income tax)	(6)	(6)	—	(18)	(18)	—	Lower revenues at IPL due to changes in the renewable energy rider (mostly offset by changes in income tax)	(4)	(4)	—	(23)	(23)	—

Other (includes higher temperature-normalized sales in 2022)		5	1	6	18	9	10
Other								Other	(4)	(6)	—	14	3	10
		$30	$—	$32	$64	$2	$63		$24	($10)	$32	$87	($9)	$95

(a)In December 2021, the PSCW issued an order authorizing annual base rate increases of $114 million and $15 million for WPL’s retail electric and gas customers, respectively, covering the 2022/2023 forward-looking Test Period, which was based on a stipulated agreement between WPL and certain stakeholders. The key drivers for the annual base rate increases include higher retail fuel-related costs in 2022, lower excess deferred income tax benefits in 2022 and 2023 compared to 2021, and revenue requirement impacts of increasing electric and gas rate base, including investments in solar generation. Retail electric rate changes were effective on January 1, 2022 and extend through the end of 2023. Retail gas rate changes were effective on January 1, 2022 and extend through the end of 2022. The higher fuel expense costs are recognized in electric margin and the lower amount of excess deferred income tax benefits is recognized as a reduction in income tax.

Utility Gas Margin Variances - The following items contributed to increased (decreased) utility gas margins for the three and ~~six~~nine months ended ~~June~~September 30, 2022 compared to the same periods in 2021 as follows (in millions):


		Three Months			Six Months				Three Months			Nine Months
		Alliant Energy	IPL	WPL	Alliant Energy	IPL	WPL		Alliant Energy	IPL	WPL	Alliant Energy	IPL	WPL
Higher revenues at IPL related to changes in recovery amounts for energy efficiency costs through the energy efficiency rider (mostly offset by changes in energy efficiency expense)	Higher revenues at IPL related to changes in recovery amounts for energy efficiency costs through the energy efficiency rider (mostly offset by changes in energy efficiency expense)	$2	$2	$—	$11	$11	$—	Higher revenues at IPL related to changes in recovery amounts for energy efficiency costs through the energy efficiency rider (mostly offset by changes in energy efficiency expense)	$1	$1	$—	$12	$12	$—
Higher revenue requirements at WPL due to increasing rate base (refer to (a) above)	Higher revenue requirements at WPL due to increasing rate base (refer to (a) above)	2	—	2	9	—	9	Higher revenue requirements at WPL due to increasing rate base (refer to (a) above)	1	—	1	10	—	10

Other (includes higher temperature-normalized sales in 2022)		4	2	2	12	6	6
Other (includes higher sales in 2022)								Other (includes higher sales in 2022)	2	(1)	2	14	5	8
		$8	$4	$4	$32	$17	$15		$4	$—	$3	$36	$17	$18


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Other Operation and Maintenance Expenses Variances - The following items contributed to (increased) decreased other operation and maintenance expenses for the three and ~~six~~nine months ended ~~June~~September 30, 2022 compared to the same periods in 2021 as follows (in millions):


		Three Months			Six Months				Three Months			Nine Months
		Alliant Energy	IPL	WPL	Alliant Energy	IPL	WPL		Alliant Energy	IPL	WPL	Alliant Energy	IPL	WPL
Higher energy efficiency expense at IPL (mostly offset by higher revenues)	Higher energy efficiency expense at IPL (mostly offset by higher revenues)	$—	$—	$—	($8)	($8)	$—	Higher energy efficiency expense at IPL (mostly offset by higher revenues)	$—	$—	$—	($8)	($8)	$—

Non-utility Travero (mostly offset by higher revenues)	Non-utility Travero (mostly offset by higher revenues)	(4)	—	—	(7)	—	—	Non-utility Travero (mostly offset by higher revenues)	(2)	—	—	(9)	—	—
Other	Other	(2)	(6)	2	1	(5)	5	Other	1	5	(4)	2	1	1
		($6)	($6)	$2	($14)	($13)	$5		($1)	$5	($4)	($15)	($7)	$1


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~~Table~~ of ~~Contents~~

Other Income and Deductions Variances - The following items contributed to (increased) decreased other income and deductions for the three and ~~six~~nine months ended ~~June~~September 30, 2022 compared to the same periods in 2021 as follows (in millions):


		Three Months			Six Months				Three Months			Nine Months
		Alliant Energy	IPL	WPL	Alliant Energy	IPL	WPL		Alliant Energy	IPL	WPL	Alliant Energy	IPL	WPL
Higher interest expense primarily due to financings completed in 2022 and 2021 and higher interest rates	Higher interest expense primarily due to financings completed in 2022 and 2021 and higher interest rates	($9)	($3)	($2)	($14)	($5)	($3)	Higher interest expense primarily due to financings completed in 2022 and 2021 and higher interest rates	($15)	($3)	($6)	($29)	($8)	($9)
(Lower) higher equity income from unconsolidated investments, net (refer to Note 5 for details)								(Lower) higher equity income from unconsolidated investments, net (refer to Note 5 for details)	(8)	—	—	(10)	—	1
Higher AFUDC primarily due to changes in construction work in progress balances related to WPL’s solar generation	Higher AFUDC primarily due to changes in construction work in progress balances related to WPL’s solar generation	8	—	8	15	—	14	Higher AFUDC primarily due to changes in construction work in progress balances related to WPL’s solar generation	3	1	2	18	1	17
Other	Other	(1)	2	—	1	3	1	Other	3	1	2	7	4	2
		($2)	($1)	$6	$2	($2)	$12		($17)	($1)	($2)	($14)	($3)	$11

Income Taxes - Refer to Note 9 for details of effective income tax rates.

Preferred Dividend Requirements of IPL - Alliant Energy’s and IPL’s preferred dividend requirements decreased for the three and ~~six~~nine months ended ~~June~~September 30, 2022 compared to the same periods in 2021 due to the redemption of IPL’s 5.1% cumulative preferred stock in December 2021.

Other Future Considerations - In addition to items discussed in this report, the following key items could impact Alliant Energy’s, IPL’s and WPL’s future financial condition or results of operations:

•Financing Plans - Alliant Energy currently expects to issue up to $250 million of common stock in 2023 through one or more offerings and its Shareowner Direct Plan. IPL, WPL (subject to regulatory approval) and AEF currently expect to issue up to $300 million, $300 million, and $450 million of long-term debt, respectively, by the end of 2023. WPL and AEF have $250 million and $400 million of long-term debt maturing in 2022 and 2023, respectively.

•Common Stock Dividends - Alliant Energy announced a 6% increase in its targeted 2023 annual common stock dividend to $1.81 per share, which is equivalent to a quarterly rate of $0.4525 per share, beginning with the February 2023 dividend payment. The timing and amount of future dividends is subject to an approved dividend declaration from Alliant Energy’s Board of Directors, and is dependent upon earnings expectations, capital requirements, and general financial business conditions, among other factors.

•Higher Earnings on Increasing Rate Base - Alliant Energy and WPL currently expect an increase in earnings in 2023 compared to 2022 due to impacts from increasing revenue requirements related to investments in the utility business, including WPL’s solar investments.

•Other Operation and Maintenance Expenses - Alliant Energy, IPL and WPL currently expect a decrease in other operation and maintenance expenses in 2023 compared to 2022 largely due to cost reductions resulting from operating efficiencies.

•Interest Expense - Alliant Energy, IPL and WPL currently expect an increase in interest expense in 2023 compared to 2022 due to financings completed in 2022 and planned by the end of 2023 as discussed above, as well as expected higher interest rates.

LIQUIDITY AND CAPITAL RESOURCES

The liquidity and capital resources summary included in the 2021 Form 10-K has not changed materially, except as described below.

Liquidity Position - At ~~June~~September 30, 2022, Alliant Energy had ~~$19~~$344 million of cash and cash equivalents, ~~$601~~$617 million ($~~273~~67 million at the parent company, $250 million at IPL and ~~$78~~$300 million at WPL) of available capacity under the single revolving credit facility and ~~$95~~$109 million of available capacity at IPL under its sales of accounts receivable program.


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Capital Structure - Capital structures at ~~June~~September 30, 2022 were as follows (Long-term Debt (including current maturities) (LD); Short-term Debt (SD); Common Equity (CE)):

Cash Flows - Selected information from the cash flows statements was as follows (in millions):


		Alliant Energy		IPL		WPL			Alliant Energy		IPL		WPL
		2022	2021	2022	2021	2022	2021		2022	2021	2022	2021	2022	2021
Cash, cash equivalents and restricted cash, January 1	Cash, cash equivalents and restricted cash, January 1	$40	$56	$34	$50	$2	$3	Cash, cash equivalents and restricted cash, January 1	$40	$56	$34	$50	$2	$3
Cash flows from (used for):	Cash flows from (used for):							Cash flows from (used for):
Operating activities	Operating activities	300	207	83	18	198	200	Operating activities	485	477	166	95	279	349
Investing activities	Investing activities	(370)	(190)	60	98	(384)	(253)	Investing activities	(599)	(452)	84	122	(612)	(510)
Financing activities	Financing activities	50	(57)	(164)	(155)	188	53	Financing activities	421	(57)	(239)	(254)	630	162
Net increase (decrease)	Net increase (decrease)	(20)	(40)	(21)	(39)	2	—	Net increase (decrease)	307	(32)	11	(37)	297	1
Cash, cash equivalents and restricted cash, June 30		$20	$16	$13	$11	$4	$3
Cash, cash equivalents and restricted cash, September 30								Cash, cash equivalents and restricted cash, September 30	$347	$24	$45	$13	$299	$4


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~~Table~~ of ~~Contents~~

Operating Activities - The following items contributed to increased (decreased) operating activity cash flows for the ~~six~~nine months ended ~~June~~September 30, 2022 compared to the same period in 2021 (in millions):


		Alliant Energy	IPL	WPL		Alliant Energy	IPL	WPL
Higher collections from WPL’s increasing base rate		$62	$—	$62
Higher collections from WPL’s retail electric and gas base rate increases					Higher collections from WPL’s retail electric and gas base rate increases	$95	$—	$95
Lower contributions to qualified defined benefit pension plans	Lower contributions to qualified defined benefit pension plans	19	9	9	Lower contributions to qualified defined benefit pension plans	37	17	18
Natural gas cost payments from extreme temperatures in February 2021 resulting in under-recovered natural gas costs at IPL in 2021	Natural gas cost payments from extreme temperatures in February 2021 resulting in under-recovered natural gas costs at IPL in 2021	14	14	—	Natural gas cost payments from extreme temperatures in February 2021 resulting in under-recovered natural gas costs at IPL in 2021	15	15	—
Credits issued to IPL’s retail electric customers in 2021 through its transmission cost rider for refunds received in 2020 for MISO transmission owner return on equity complaints	Credits issued to IPL’s retail electric customers in 2021 through its transmission cost rider for refunds received in 2020 for MISO transmission owner return on equity complaints	12	12	—	Credits issued to IPL’s retail electric customers in 2021 through its transmission cost rider for refunds received in 2020 for MISO transmission owner return on equity complaints	14	14	—

Timing of WPL’s fuel-related cost recoveries from customers	Timing of WPL’s fuel-related cost recoveries from customers	(37)	—	(37)	Timing of WPL’s fuel-related cost recoveries from customers	(71)	—	(71)

Changes in levels of gas stored underground and prepaid gas costs					Changes in levels of gas stored underground and prepaid gas costs	(35)	(13)	(22)
Changes in interest payments					Changes in interest payments	(23)	(5)	(6)

Changes in income taxes paid/refunded					Changes in income taxes paid/refunded	(6)	5	(27)

Timing of intercompany payments and receipts		—	(1)	(10)

Other (primarily due to other changes in working capital)	Other (primarily due to other changes in working capital)	23	31	(26)	Other (primarily due to other changes in working capital)	(18)	38	(57)
		$93	$65	($2)		$8	$71	($70)

As discussed in “2022 Highlights,” the Inflation Reduction Act of 2022 provides the right to transfer future renewable tax credits to other corporate taxpayers, which is expected to result in future cash flows from operating activities for Alliant Energy, IPL and WPL.

Investing Activities - The following items contributed to increased (decreased) investing activity cash flows for the ~~six~~nine months ended ~~June~~September 30, 2022 compared to the same period in 2021 (in millions):


		Alliant Energy	IPL	WPL		Alliant Energy	IPL	WPL
(Higher) lower utility construction and acquisition expenditures (a)	(Higher) lower utility construction and acquisition expenditures (a)	($124)	$19	($143)	(Higher) lower utility construction and acquisition expenditures (a)	($101)	$16	($117)
Changes in the amount of cash receipts on sold receivables	Changes in the amount of cash receipts on sold receivables	(62)	(62)	—	Changes in the amount of cash receipts on sold receivables	(65)	(65)	—
Other	Other	6	5	12	Other	19	11	15
		($180)	($38)	($131)		($147)	($38)	($102)

(a)Largely due to higher expenditures for WPL’s solar generation, partially offset by lower expenditures for IPL’s and WPL’s electric and gas distribution systems.


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Construction and Acquisition Expenditures - Construction and acquisition expenditures and financing plans are reviewed, approved and updated as part of the strategic planning process. Changes may result from a number of reasons, including regulatory requirements, changing legislation, not obtaining favorable and acceptable regulatory approval on certain projects, improvements in technology, and improvements to ensure reliability of the electric and gas distribution systems. Construction and acquisition expenditures for 2022 through 2026 are currently anticipated as follows (in millions), which are focused on the transition to cleaner energy and strengthening the resiliency and reliability of IPL’s and WPL’s electric grid. Cost estimates represent Alliant Energy’s, IPL’s and WPL’s portion of construction expenditures and exclude AFUDC and capitalized interest, if applicable.


	Alliant Energy					IPL					WPL
	2022	2023	2024	2025	2026	2022	2023	2024	2025	2026	2022	2023	2024	2025	2026
Generation:
Renewables and battery storage	$775	$900	$1,205	$725	$1,060	$40	$325	$625	$260	$670	$735	$575	$580	$465	$390
Other	80	100	315	490	335	40	55	55	70	100	40	45	260	420	235
Distribution:
Electric systems	465	550	595	545	535	250	320	360	300	280	215	230	235	245	255
Gas systems	75	80	85	85	85	35	35	40	40	40	40	45	45	45	45
Other	145	220	210	175	180	25	45	40	45	45	20	35	30	30	30
	$1,540	$1,850	$2,410	$2,020	$2,195	$390	$780	$1,120	$715	$1,135	$1,050	$930	$1,150	$1,205	$955

New MISO Seasonal Capacity Construct - As discussed in “2022 Highlights,” in August 2022, FERC approved MISO’s proposal to change its methodology for procuring capacity in the energy market effective with the 2023/2024 MISO Planning Year. IPL and WPL currently plan to construct and/or acquire additional renewable, battery and natural gas resources to comply with the requirements of this new methodology and have reflected the estimated capital expenditures for these projects in the "Renewables and battery storage" and "Other” Generation lines in the construction and acquisition table above.

Renewables and Battery Storage - Alliant Energy, IPL and WPL ~~are currently evaluating~~continue to evaluate potential impacts from cost pressures prevalent in the solar generation and battery storage markets and the pending U.S. Department of Commerce investigation on the timing and estimated costs for IPL’s and WPL’s planned development and acquisition of additional renewable energy, which could impact their anticipated future construction and acquisition expenditures. Refer to “2022 Highlights” for further discussion of the U.S. Department of Commerce investigation ~~as well as information on IPL’s revised fixed cost cap filing~~and regulatory filings with the IUB ~~in June 2022~~and PSCW related to future renewable and battery storage projects, including recent filings by IPL and WPL announcing plans to shift away from tax equity partnerships to traditional ownership for ~~up to 400 MW~~future renewable and battery storage projects following the enactment of ~~solar generation and approximately 75 MW~~the Inflation Reduction Act of ~~battery storage.~~2022.

Financing Activities - The following items contributed to increased (decreased) financing activity cash flows for the ~~six~~nine months ended ~~June~~September 30, 2022 compared to the same period in 2021 (in millions):


		Alliant Energy	IPL	WPL		Alliant Energy	IPL	WPL
Higher net proceeds from issuance of long-term debt	Higher net proceeds from issuance of long-term debt	$650	$—	$—	Higher net proceeds from issuance of long-term debt	$938	$—	$288

Capital contributions from noncontrolling interest	Capital contributions from noncontrolling interest	29	—	29	Capital contributions from noncontrolling interest	29	—	29
Higher payments to retire long-term debt	Higher payments to retire long-term debt	(300)	—	—	Higher payments to retire long-term debt	(375)	—	—
Net changes in the amount of commercial paper outstanding	Net changes in the amount of commercial paper outstanding	(262)	—	51	Net changes in the amount of commercial paper outstanding	(59)	—	18
Distributions to noncontrolling interest					Distributions to noncontrolling interest	(29)	—	(29)
(Higher) lower common stock dividends	(Higher) lower common stock dividends	(12)	40	(4)	(Higher) lower common stock dividends	(18)	61	(7)

Higher (lower) capital contributions from IPL’s and WPL’s parent company, Alliant Energy	Higher (lower) capital contributions from IPL’s and WPL’s parent company, Alliant Energy	—	(50)	55	Higher (lower) capital contributions from IPL’s and WPL’s parent company, Alliant Energy	—	(50)	175
Other	Other	2	1	4	Other	(8)	4	(6)
		$107	($9)	$135		$478	$15	$468

IPL and WPL Solar Project Tax Equity Financing - Alliant Energy, IPL and WPL are currently evaluating potential impacts from cost pressures prevalent in the solar generation and battery storage markets, as well as the U.S. Department of Commerce investigationAs discussed inNote 1 (c) and “2022 Highlights,” onwith the ~~timing~~August 2022 enactment of the Inflation Reduction Act of 2022, IPL and ~~estimated~~WPL currently expect to retain full ownership of their planned solar generation projects instead of financing a portion of the construction costs ~~for IPL’s and WPL’s planned development and acquisition of additional renewable energy, which could result in changes to their proposed solar project~~with capital from tax equity ~~financing.~~partners.

Common Stock Issuances and Common Stock Dividends - Refer to Note 6 for discussion of common stock issuances by Alliant Energy in 2022. Refer to “Results of Operations” for discussion of expected issuances of common stock and common stock dividends in 2023.

Long-term Debt - Refer to Note 7 (b) for discussion of AEF’s and WPL’s issuance of long-term debt and Corporate Services’ retirement of long-term debt in 2022. AEF’s current term loan credit agreement that expires in March 2024 includes an option to increase the amount outstanding up to $400 million in aggregate with the same maturity, subject to bank approval, and includes substantially the same financial covenants that are included in Alliant Energy’s credit facility agreement. Refer to “Results of Operations” for discussion of expected future issuances and retirements of long-term debt by the end of 2023.


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Impact of Credit Ratings on Liquidity and Collateral Obligations -

Ratings Triggers - In June 2022, Standard & Poor’s Ratings Services changed WPL’s outlook from stable to negative. This outlook change is not expected to have a material impact on Alliant Energy and WPL’s liquidity or collateral obligations.


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Off-Balance Sheet Arrangements and Certain Financial Commitments - A summary of Alliant Energy’s and IPL’s off-balance sheet arrangements and Alliant Energy’s, IPL’s and WPL’s contractual obligations is included in the 2021 Form 10-K and has not changed materially from the items reported in the 2021 Form 10-K, except for the items described in Notes 4, 7 and 1 3.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Quantitative and Qualitative Disclosures About Market Risk are reported in the 2021 Form 10-K and have not changed materially.

ITEM 4. CONTROLS AND PROCEDURES

Alliant Energy’s, IPL’s and WPL’s management evaluated, with the participation of each of Alliant Energy’s, IPL’s and WPL’s Chief Executive Officer, Chief Financial Officer and Disclosure Committee, the effectiveness of the design and operation of Alliant Energy’s, IPL’s and WPL’s disclosure controls and procedures (as defined in Rule 13a-15(e) of the Securities Exchange Act of 1934, as amended) as of ~~June~~September 30, 2022 pursuant to the requirements of the Securities Exchange Act of 1934, as amended. Based on their evaluation, the Chief Executive Officer and the Chief Financial Officer concluded that Alliant Energy’s, IPL’s and WPL’s disclosure controls and procedures were effective as of the quarter ended ~~June~~September 30, 2022.

There was no change in Alliant Energy’s, IPL’s and WPL’s internal control over financial reporting that occurred during the quarter ended ~~June~~September 30, 2022 that has materially affected, or is reasonably likely to materially affect, Alliant Energy’s, IPL’s or WPL’s internal control over financial reporting.

PART II. OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

None. SEC regulations require Alliant Energy, IPL and WPL to disclose information about certain proceedings arising under federal, state or local environmental provisions when a governmental authority is a party to the proceedings and such proceedings involve potential monetary sanctions that Alliant Energy, IPL and WPL reasonably believe will exceed a specified threshold. Pursuant to the SEC regulations, Alliant Energy, IPL and WPL use a threshold of $1 million for purposes of determining whether disclosure of any such proceedings is required. Applying this threshold, there are no environmental matters to disclose for this period.

ITEM 1A. RISK FACTORS

The risk factors described in Item 1A in the 2021 Form 10-K have not changed materially.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

A summary of Alliant Energy common stock repurchases for the quarter ended ~~June~~September 30, 2022 was as follows:

Total Number Average Price Total Number of Shares Maximum Number (or Approximate
of Shares Paid Per Purchased as Part of Dollar Value) of Shares That May
Period Purchased (a) Share Publicly Announced Plan Yet Be Purchased Under the Plan (a)
April 1 through April 30 4,080 $63.56 — N/A
May 1 through May 31 2,849 58.90 — N/A
June 1 through June 30 52 58.30 — N/A
6,981 61.62 —

Total Number

Average Price

Total Number of Shares

Maximum Number (or Approximate

of Shares

Paid Per

Purchased as Part of

Dollar Value) of Shares That May

Period

Purchased (a)

Publicly Announced Plan

Yet Be Purchased Under the Plan (a)

July 1 through July 31

4,429

$57.92

—

N/A

August 1 through August 31

2,668

63.83

—

N/A

September 1 through September 30

58.18

—

N/A

7,158

60.12

—

(a)All shares were purchased on the open market and held in a rabbi trust under the Alliant Energy Deferred Compensation Plan. There is no limit on the number of shares of Alliant Energy common stock that may be held under the Deferred Compensation Plan, which currently does not have an expiration date.

ITEM 5. OTHER INFORMATION

On November 4, 2022, the Board of Directors of Alliant Energy Corporation (the “Company”) approved an amendment and restatement of the Amended and Restated Bylaws of the Company, effective November 8, 2022. The amendments update Section 3.14 related to notice of shareowner business and nomination of directors by conforming the bylaw provision to


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universal proxy rules promulgated by the SEC, requiring additional information be provided by shareowners utilizing the bylaw provision, and amending the deadline to submit proposals or nominees under the bylaws to not later than the close of business on the 90th day nor earlier than the close of business on the 120th day prior to the first anniversary of the preceding year’s annual meeting except in certain circumstances. The amendments also include certain technical and clarifying changes to the bylaws.

The foregoing summary is qualified in its entirety by reference to the copy of the Amended and Restated Bylaws of Alliant Energy filed as Exhibit 3.1 to this Quarterly Report on Form 10-Q and is incorporated by reference herein. A blackline of the Amended and Restated Bylaws against the prior version of the bylaws is filed herewith as Exhibit 3.2.

ITEM 6. EXHIBITS

The following Exhibits are filed ~~herewith.~~herewith or incorporated herein by reference.


Exhibit Number			Description
3.1			Amended and Restated Bylaws of Alliant Energy, effective November 8 , 2022
3.2			Amended and Restated Bylaws of Alliant Energy, effective November 8 , 2022 (marked to show changes against prior version)
4.1			Officers’ Certificate, dated as of August 15, 2022, creating WPL’s 3.950% Debentures due September 1, 2032 (incorporated by reference to Exhibit 4.1 to WPL’s Form 8-K, filed August 15, 2022 (File No. 0-337))
31.1			Certification of the Chief Executive Officer for Alliant Energy
31.2			Certification of the Chief Financial Officer for Alliant Energy
31.3			Certification of the Chief Executive Officer for IPL
31.4			Certification of the Chief Financial Officer for IPL
31.5			Certification of the Chief Executive Officer for WPL
31.6			Certification of the Chief Financial Officer for WPL
32.1			Written Statement of the Chief Executive Officer and Chief Financial Officer Pursuant to 18 U.S.C.§1350 for Alliant Energy
32.2			Written Statement of the Chief Executive Officer and Chief Financial Officer Pursuant to 18 U.S.C.§1350 for IPL
32.3			Written Statement of the Chief Executive Officer and Chief Financial Officer Pursuant to 18 U.S.C.§1350 for WPL
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 Document
101.CAL			Inline XBRL Taxonomy Extension Calculation Linkbase Document
101.LAB			Inline XBRL Taxonomy Extension Label Linkbase Document
101.PRE			Inline XBRL Taxonomy Extension Presentation Linkbase Document
101.DEF			Inline XBRL Taxonomy Extension Definition Linkbase Document
104			Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, Alliant Energy Corporation, Interstate Power and Light Company and Wisconsin Power and Light Company have each duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized on the ~~5th~~8th day of ~~August~~November 2022.


ALLIANT ENERGY CORPORATION
Registrant

By: /s/ Benjamin M. Bilitz			Chief Accounting Officer and Controller
Benjamin M. Bilitz			(Principal Accounting Officer and Authorized Signatory)


INTERSTATE POWER AND LIGHT COMPANY
Registrant

By: /s/ Benjamin M. Bilitz			Chief Accounting Officer and Controller
Benjamin M. Bilitz			(Principal Accounting Officer and Authorized Signatory)


WISCONSIN POWER AND LIGHT COMPANY
Registrant

By: /s/ Benjamin M. Bilitz			Chief Accounting Officer and Controller
Benjamin M. Bilitz			(Principal Accounting Officer and Authorized Signatory)


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