Item 1. CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

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Item 1. CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

ALLIANT ENERGY CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)


	For the Three Months		For the Nine Months
	Ended September 30,		Ended September 30,
	2022	2021	2022	2021
	(in millions, except per share amounts)
Revenues:
Electric utility	$1,039	$939	$2,624	$2,357
Gas utility	62	50	418	289
Other utility	11	13	35	36
Non-utility	23	22	70	60
Total revenues	1,135	1,024	3,147	2,742
Operating expenses:
Electric production fuel and purchased power	274	207	633	478
Electric transmission service	157	148	428	403
Cost of gas sold	26	18	242	149
Other operation and maintenance	172	171	492	477
Depreciation and amortization	169	165	501	494
Taxes other than income taxes	28	26	82	78
Total operating expenses	826	735	2,378	2,079
Operating income	309	289	769	663
Other (income) and deductions:
Interest expense	83	68	235	206
Equity income from unconsolidated investments, net	(5)	(13)	(37)	(47)
Allowance for funds used during construction	(10)	(7)	(34)	(16)
Other	—	3	—	7
Total other (income) and deductions	68	51	164	150
Income before income taxes	241	238	605	513
Income tax expense (benefit)	14	(21)	26	(66)


Net income	227	259	579	579
Preferred dividend requirements of Interstate Power and Light Company	—	3	—	8
Net income attributable to Alliant Energy common shareowners	$227	$256	$579	$571
Weighted average number of common shares outstanding:
Basic	251.0	250.3	250.8	250.2
Diluted	251.3	250.8	251.1	250.6

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)


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

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

Other	364	240
Total current assets	1,693	1,069
Property, plant and equipment, net	15,858	14,987
Investments:
ATC Holdings	351	338
Other	200	179
Total investments	551	517
Other assets:
Regulatory assets	1,864	1,836
Deferred charges and other	239	144
Total other assets	2,103	1,980
Total assets	$20,205	$18,553


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 Nine Months
	Ended September 30,
	2022	2021
	(in millions)
Cash flows from operating activities:
Net income	$579	$579
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	501	494
Deferred tax expense (benefit) and tax credits	8	(69)


Other	(8)	7
Other changes in assets and liabilities:
Accounts receivable	(425)	(397)

Derivative assets	(184)	(202)
Regulatory assets	(102)	(21)
Accounts payable	90	—
Derivative liabilities	89	(21)
Regulatory liabilities	89	25
Deferred income taxes	(15)	160
Pension and other benefit obligations	(25)	(59)
Other	(112)	(19)
Net cash flows from operating activities	485	477
Cash flows used for investing activities:
Construction and acquisition expenditures:
Utility business	(873)	(772)
Other	(69)	(60)
Cash receipts on sold receivables	358	423
Other	(15)	(43)
Net cash flows used for investing activities	(599)	(452)
Cash flows from (used for) financing activities:
Common stock dividends	(322)	(304)

Proceeds from issuance of long-term debt	1,238	300
Payments to retire long-term debt	(379)	(4)
Net change in commercial paper	(132)	(73)
Contributions from noncontrolling interest	29	—
Distributions to noncontrolling interest	(29)	—
Other	16	24
Net cash flows from (used for) financing activities	421	(57)
Net increase (decrease) in cash, cash equivalents and restricted cash	307	(32)
Cash, cash equivalents and restricted cash at beginning of period	40	56
Cash, cash equivalents and restricted cash at end of period	$347	$24
Supplemental cash flows information:
Cash paid during the period for:
Interest	($220)	($197)
Income taxes, net	($7)	($1)
Significant non-cash investing and financing activities:
Accrued capital expenditures	$403	$91
Beneficial interest obtained in exchange for securitized accounts receivable	$248	$164

Refer to accompanying Combined Notes to Condensed Consolidated Financial Statements.


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INTERSTATE POWER AND LIGHT COMPANY

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)


	For the Three Months		For the Nine Months
	Ended September 30,		Ended September 30,
	2022	2021	2022	2021
	(in millions)
Revenues:
Electric utility	$596	$555	$1,438	$1,343
Gas utility	33	31	224	165
Steam and other	11	13	34	35
Total revenues	640	599	1,696	1,543
Operating expenses:
Electric production fuel and purchased power	140	101	290	215
Electric transmission service	115	103	303	274
Cost of gas sold	14	12	126	84
Other operation and maintenance	90	95	260	253
Depreciation and amortization	95	94	285	281
Taxes other than income taxes	15	14	43	42
Total operating expenses	469	419	1,307	1,149
Operating income	171	180	389	394
Other (income) and deductions:
Interest expense	37	34	111	103
Allowance for funds used during construction	(3)	(2)	(8)	(7)
Other	(1)	—	(2)	2
Total other (income) and deductions	33	32	101	98
Income before income taxes	138	148	288	296
Income tax benefit	(16)	(12)	(39)	(34)
Net income	154	160	327	330
Preferred dividend requirements	—	3	—	8
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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INTERSTATE POWER AND LIGHT COMPANY

CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)


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


LIABILITIES AND EQUITY
Current liabilities:


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


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

Refer to accompanying Combined Notes to Condensed Consolidated Financial Statements.


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INTERSTATE POWER AND LIGHT COMPANY

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)


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

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


Derivative assets	(118)	(86)
Regulatory assets	18	(33)
Accounts payable	71	5
Derivative liabilities	62	(9)
Regulatory liabilities	61	30

Deferred income taxes	(30)	56
Pension and other benefit obligations	(9)	(25)
Other	(72)	(28)
Net cash flows from operating activities	166	95
Cash flows from investing activities:
Construction and acquisition expenditures	(269)	(285)
Cash receipts on sold receivables	358	423
Other	(5)	(16)
Net cash flows from investing activities	84	122
Cash flows used for financing activities:
Common stock dividends	(240)	(301)
Capital contributions from parent	—	50



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

Refer to accompanying Combined Notes to Condensed Consolidated Financial Statements.


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WISCONSIN POWER AND LIGHT COMPANY

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)


	For the Three Months		For the Nine Months
	Ended September 30,		Ended September 30,
	2022	2021	2022	2021
	(in millions)
Revenues:
Electric utility	$443	$384	$1,186	$1,014
Gas utility	29	19	194	124
Other	—	—	1	1
Total revenues	472	403	1,381	1,139
Operating expenses:
Electric production fuel and purchased power	134	105	343	263
Electric transmission service	42	44	125	128
Cost of gas sold	13	6	117	65
Other operation and maintenance	70	66	193	194
Depreciation and amortization	71	70	211	209
Taxes other than income taxes	11	12	35	35
Total operating expenses	341	303	1,024	894
Operating income	131	100	357	245
Other (income) and deductions:
Interest expense	31	25	86	77

Allowance for funds used during construction	(7)	(5)	(26)	(9)
Other	—	2	—	3
Total other (income) and deductions	24	22	60	71
Income before income taxes	107	78	297	174
Income tax expense (benefit)	16	(15)	50	(41)
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.


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WISCONSIN POWER AND LIGHT COMPANY

CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)


	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.


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WISCONSIN POWER AND LIGHT COMPANY

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)


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


Derivative assets	(66)	(116)
Regulatory assets	(120)	11




Deferred income taxes	20	108
Other	(17)	(27)
Net cash flows from operating activities	279	349
Cash flows used for investing activities:
Construction and acquisition expenditures	(604)	(487)
Other	(8)	(23)
Net cash flows used for investing activities	(612)	(510)
Cash flows from financing activities:
Common stock dividends	(133)	(126)
Capital contributions from parent	420	245
Proceeds from issuance of long-term debt	588	300

Net change in commercial paper	(236)	(254)
Contributions from noncontrolling interest	29	—
Distributions to noncontrolling interest	(29)	—
Other	(9)	(3)
Net cash flows from financing activities	630	162
Net increase in cash, cash equivalents and restricted cash	297	1
Cash, cash equivalents and restricted cash at beginning of period	2	3
Cash, cash equivalents and restricted cash at end of period	$299	$4
Supplemental cash flows information:
Cash paid during the period for:
Interest	($78)	($72)
Income taxes, net	($51)	($24)
Significant non-cash investing and financing activities:
Accrued capital expenditures	$355	$59

Refer to accompanying Combined Notes to Condensed Consolidated Financial Statements.


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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 nine months ended 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 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) - 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 were a WPL subsidiary (the managing member) and a tax equity partner. In 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, and $88 million of the contributed funds were paid to WPL in exchange for equity interests in the project companies. In the second quarter of 2022, Alliant Energy and WPL consolidated this joint venture as it was a VIE in which WPL held a variable interest, and WPL controlled decisions that were significant to the joint venture’s ongoing operations and economic results (i.e., WPL was the primary beneficiary).

In August 2022, the Inflation Reduction Act of 2022 was enacted. Following its enactment, WPL evaluated the provisions of the new legislation and determined that retaining full ownership of the solar projects is expected to result in lower costs for its customers. As a result, in the third quarter of 2022, WPL and the tax equity partner terminated the tax equity partnership, and WPL returned the $29 million of initial funding to the tax equity partner. Alliant Energy and WPL no longer expect their solar generation project construction costs to be financed with capital from tax equity partners, which would result in higher rate base amounts 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 lower costs for WPL's customers.

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


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NOTE 2. REGULATORY MATTERS

Regulatory Assets and Regulatory Liabilities -

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


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

Other	120	132	64	80	56	52
	$2,041	$1,940	$1,423	$1,443	$618	$497

Tax-related - Refer to N ote 9 for discussion of Iowa Tax Reform, which resulted in a decrease in Alliant Energy’s and IPL’s tax-related regulatory assets in the 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 nine months ended September 30, 2022, WPL’s actual fuel-related costs fell outside these fuel monitoring ranges, resulting in a $83 million deferral of higher than expected fuel-related costs as of 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
	September 30, 2022	December 31, 2021	September 30, 2022	December 31, 2021	September 30, 2022	December 31, 2021
Tax-related	$582	$585	$304	$312	$278	$273
Cost of removal obligations	398	384	258	252	140	132
Derivatives	312	166	164	77	148	89
WPL’s West Riverside liquidated damages	33	36	—	—	33	36
Electric transmission cost recovery	16	51	4	27	12	24




Other	46	49	31	23	15	26
	$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.

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 September 30, 2022, IPL had $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 nine months ended September 30 were as follows (in millions):


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	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):


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

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

As of 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 nine months ended September 30 were as follows (in millions):


	Three Months		Nine Months
	2022	2021	2022	2021
Collections	$670	$607	$1,731	$1,589
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 nine months ended September 30 was as follows (in millions):


	Three Months		Nine Months
	2022	2021	2022	2021
ATC Holdings	($7)	($12)	($29)	($34)


Other	2	(1)	(8)	(13)
	($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			324,533
Equity-based compensation plans			222,768

Shares outstanding, September 30, 2022			251,021,830

Noncontrolling Interest - In the second quarter of 2022, WPL and the tax equity partner contributed to a joint venture associated with certain WPL solar generation projects. The tax equity partner's contributions were represented as a noncontrolling interest within total equity on Alliant Energy’s and WPL’s balance 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(c ) for additional information.


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


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

Distributions to noncontrolling interest						(29)	(29)


Ending balance, September 30, 2022	$3	$2,767	$3,508	$—	($13)	$—	$6,265


Alliant Energy	Total Alliant Energy Common Equity
				Accumulated	Shares in	Cumulative
		Additional		Other	Deferred	Preferred
	Common	Paid-In	Retained	Comprehensive	Compensation	Stock	Total
	Stock	Capital	Earnings	Loss	Trust	of IPL	Equity
Three Months Ended September 30, 2021
Beginning balance, June 30, 2021	$3	$2,722	$3,106	($1)	($11)	$200	$6,019
Net income attributable to Alliant Energy common shareowners			256				256
Common stock dividends ($0.4025 per share)			(101)				(101)
Shareowner Direct Plan issuances		6					6
Equity-based compensation plans and other		5					5




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



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


Ending balance, September 30, 2022	$3	$2,767	$3,508	$—	($13)	$—	$6,265



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




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


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

Ending balance, September 30, 2022	$33	$2,807	$1,016	$—	$3,856
Nine Months Ended September 30, 2021
Beginning balance, December 31, 2020	$33	$2,752	$979	$200	$3,964
Net income available for common stock			322		322
Common stock dividends			(301)		(301)
Capital contributions from parent		50			50
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 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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WPL	Total WPL Common Equity
		Additional
	Common	Paid-In	Retained	Noncontrolling	Total
	Stock	Capital	Earnings	Interest	Equity
Nine Months Ended September 30, 2022
Beginning balance, December 31, 2021	$66	$1,704	$1,053	$—	$2,823
Net income			247		247
Common stock dividends			(133)		(133)
Capital contributions from parent		420			420
Contributions from noncontrolling interest				29	29
Distributions to noncontrolling interest				(29)	(29)
Other		(1)			(1)
Ending balance, September 30, 2022	$66	$2,123	$1,167	$—	$3,356
Nine Months Ended September 30, 2021
Beginning balance, December 31, 2020	$66	$1,459	$953	$—	$2,478
Net income			215		215
Common stock dividends			(126)		(126)
Capital contributions from parent		245			245


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):


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


	Alliant Energy		IPL		WPL
Three Months Ended September 30	2022	2021	2022	2021	2022	2021
Maximum amount outstanding (based on daily outstanding balances)	$449	$648	$—	$8	$251	$320
Average amount outstanding (based on daily outstanding balances)	$353	$560	$—	$—	$110	$221
Weighted average interest rates	2.4%	0.2%	—%	0.2%	2.0%	0.1%
Nine Months Ended September 30
Maximum amount outstanding (based on daily outstanding balances)	$577	$648	$—	$19	$252	$320
Average amount outstanding (based on daily outstanding balances)	$377	$479	$—	$—	$160	$196
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 (3% as of 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
Three Months Ended September 30	2022	2021	2022	2021	2022	2021
Electric Utility:
Retail - residential	$376	$348	$222	$207	$154	$141
Retail - commercial	243	232	165	160	78	72
Retail - industrial	289	265	172	158	117	107
Wholesale	68	55	19	18	49	37
Bulk power and other	63	39	18	12	45	27
Total Electric Utility	1,039	939	596	555	443	384
Gas Utility:
Retail - residential	28	24	14	14	14	10
Retail - commercial	18	13	8	8	10	5
Retail - industrial	4	3	3	3	1	—
Transportation/other	12	10	8	6	4	4
Total Gas Utility	62	50	33	31	29	19
Other Utility:
Steam	9	9	9	9	—	—
Other utility	2	4	2	4	—	—
Total Other Utility	11	13	11	13	—	—
Non-Utility and Other:
Travero and other	23	22	—	—	—	—

Total Non-Utility and Other	23	22	—	—	—	—
Total revenues	$1,135	$1,024	$640	$599	$472	$403



	Alliant Energy		IPL		WPL
Nine Months Ended September 30	2022	2021	2022	2021	2022	2021
Electric Utility:
Retail - residential	$956	$868	$529	$488	$427	$380
Retail - commercial	628	579	411	385	217	194
Retail - industrial	743	677	418	386	325	291
Wholesale	168	142	49	44	119	98
Bulk power and other	129	91	31	40	98	51
Total Electric Utility	2,624	2,357	1,438	1,343	1,186	1,014
Gas Utility:
Retail - residential	237	162	127	90	110	72
Retail - commercial	127	85	62	47	65	38
Retail - industrial	15	11	10	8	5	3
Transportation/other	39	31	25	20	14	11
Total Gas Utility	418	289	224	165	194	124
Other Utility:
Steam	29	27	29	27	—	—
Other utility	6	9	5	8	1	1
Total Other Utility	35	36	34	35	1	1
Non-Utility and Other:
Travero and other	70	60	—	—	—	—

Total Non-Utility and Other	70	60	—	—	—	—
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 nine months ended 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		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 September 30, 2022, the remaining carryforwards and expiration dates were estimated as follows (in millions):


	Range of Expiration Dates	Alliant Energy	IPL	WPL

State net operating losses	2022-2042	$500	$9	$2
Federal tax credits	2022-2042	655	437	208

Iowa Tax Reform - In March 2022, Iowa tax reform was 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, 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.

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 nine months ended 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
	Three Months		Nine Months		Three Months		Nine Months
Alliant Energy	2022	2021	2022	2021	2022	2021	2022	2021
Service cost	$3	$2	$7	$8	$—	$1	$2	$3
Interest cost	9	9	27	26	1	1	4	3
Expected return on plan assets	(18)	(17)	(52)	(51)	—	(1)	(3)	(3)
Amortization of prior service credit	—	(1)	—	(1)	—	—	—	—
Amortization of actuarial loss	8	10	24	29	1	1	2	3


	$2	$3	$6	$11	$2	$2	$5	$6


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

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


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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 nine months ended September 30 was as follows (in millions):


	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
Compensation expense	$3	$4	$9	$9	$2	$2	$5	$5	$1	$2	$4	$4
Income tax benefits	1	1	3	3	—	—	1	1	—	—	1	1

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

For the nine months ended 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
	Grants	Grant Date Fair Value
Performance shares	74,106	$54.45
Performance restricted stock units	84,670	57.01
Restricted stock units	77,122	56.88

As of September 30, 2022, 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 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
	MWhs	Years	MWhs	Years	Dths	Years	Tons	Years	Gallons	Years
Alliant Energy	1,379	2022-2024	14,454	2022-2023	249,508	2022-2032	1,566	2022-2023	756	2022
IPL	768	2022-2024	6,165	2022-2023	135,193	2022-2030	669	2022-2023	—	—
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
	September 30, 2022	December 31, 2021	September 30, 2022	December 31, 2021	September 30, 2022	December 31, 2021
Current derivative assets	$200	$113	$117	$48	$83	$65
Non-current derivative assets	160	63	85	36	75	27
Current derivative liabilities	71	8	54	4	17	4
Non-current derivative liabilities	27	1	12	—	15	1


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During the nine months ended 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 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, derivative assets and derivative liabilities related 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

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	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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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


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

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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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
	Excluding FTRs	FTRs	Excluding FTRs	FTRs	Excluding FTRs	FTRs
September 30, 2022	($14)	$59	($15)	$48	$1	$11
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 September 30, 2022, Alliant Energy’s and WPL’s minimum future commitments for these projects were $208 million and $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 September 30, 2022, related minimum future commitments were as follows (in millions):


	Alliant Energy	IPL	WPL

Natural gas	$1,608	$742	$866
Coal	197	95	102
Other (a)	126	57	28
	$1,931	$894	$996

(a)Includes individual commitments incurred during the normal course of business that exceeded $1 million at 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 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 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 $59 million as of 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 September 30, 2022 and December 31, 2021.

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 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 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) 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 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, the U.S. Court of 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 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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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					ATC Holdings,	Alliant
	Utility				Non-Utility,	Energy
	Electric	Gas	Other	Total	Parent and Other	Consolidated
	(in millions)
Three Months Ended September 30, 2022
Revenues	$1,039	$62	$11	$1,112	$23	$1,135
Operating income (loss)	304	(3)	1	302	7	309
Net income (loss) attributable to Alliant Energy common shareowners				245	(18)	227
Three Months Ended September 30, 2021
Revenues	$939	$50	$13	$1,002	$22	$1,024
Operating income (loss)	290	(5)	(5)	280	9	289
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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WPL	Electric	Gas	Other	Total
	(in millions)
Three Months Ended September 30, 2022
Revenues	$443	$29	$—	$472
Operating income	130	—	1	131
Net income				91
Three Months Ended September 30, 2021
Revenues	$384	$19	$—	$403
Operating income (loss)	104	(2)	(2)	100
Net income				93
Nine Months Ended September 30, 2022
Revenues	$1,186	$194	$1	$1,381
Operating income	327	29	1	357
Net income				247
Nine Months Ended September 30, 2021
Revenues	$1,014	$124	$1	$1,139
Operating income (loss)	236	12	(3)	245
Net income				215

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 nine months ended September 30 were as follows (in millions):


	IPL				WPL
	Three Months		Nine Months		Three Months		Nine Months
	2022	2021	2022	2021	2022	2021	2022	2021
Corporate Services billings	$45	$50	$136	$138	$39	$37	$117	$113
Sales credited	11	4	11	9	31	16	62	23
Purchases billed	119	105	342	347	42	24	103	71

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


	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 nine months ended September 30 were as follows (in millions):


	Three Months		Nine Months
	2022	2021	2022	2021
ATC billings to WPL	$38	$29	$107	$91
WPL billings to ATC	6	4	14	13

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

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