ALLIANT ENERGY CORP

For the period ended Jun 30, 2025. Filed Aug 8, 2025.

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A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Jun 30, 2025 · Filed Aug 8, 2025

LNT$73.24-0.3%Stored close · as of Nov 10, 2026

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Contents

Alliant Energy Corporation

For the Three Months · For the Six Months
	Ended June 30,		Ended June 30,
	2025	2024	2025	2024
(in millions, except per share amounts)
Revenues:
Electric utility	$851	$789	$1,703	$1,580
Gas utility	76	69	316	273
Other utility	11	10	25	24
Non-utility	23	26	44	48
Total revenues	961	894	2,088	1,925
Operating expenses:
Electric production fuel and purchased power	150	138	325	301
Electric transmission service	151	147	308	300
Cost of gas sold	30	25	167	139
Other operation and maintenance:
Asset valuation charge for IPL’s Lansing Generating Station	—	60	—	60
Other	168	177	327	336
Depreciation and amortization	208	188	420	376
Taxes other than income taxes	31	29	62	61
Total operating expenses	738	764	1,609	1,573
Operating income	223	130	479	352
Other (income) and deductions:
Interest expense	124	108	243	215
Equity income from unconsolidated investments, net	(10)	(15)	(23)	(31)
Allowance for funds used during construction	(23)	(19)	(41)	(38)
Other	1	2	4	4
Total other (income) and deductions	92	76	183	150
Income before income taxes	131	54	296	202
Income tax benefit	(43)	(33)	(91)	(43)
Net income attributable to Alliant Energy common shareowners	$174	$87	$387	$245
Weighted average number of common shares outstanding:
Basic	256.9	256.4	256.8	256.3
Diluted	257.3	256.7	257.3	256.6
Earnings per weighted average common share attributable to Alliant Energy common shareowners:
Basic	$0.68	$0.34	$1.51	$0.96
Diluted	$0.68	$0.34	$1.50	$0.95

	June 30,2025	December 31,2024
(in millions, except pershare and share amounts)
ASSETS
Current assets:
Cash and cash equivalents	$329	$81
Accounts receivable, less allowance for expected credit losses	518	427
Production fuel, at weighted average cost	52	54
Gas stored underground, at weighted average cost	31	55
Materials and supplies, at weighted average cost	195	186
Regulatory assets	164	210
Other	185	171
Total current assets	1,474	1,184
Property, plant and equipment, net	19,376	18,701
Investments:
ATC Holdings	440	415
Other	226	224
Total investments	666	639
Other assets:
Regulatory assets	2,123	2,064
Deferred charges and other	111	126
Total other assets	2,234	2,190
Total assets	$23,750	$22,714

LIABILITIES AND EQUITY
Current liabilities:
Current maturities of long-term debt	$1,373	$1,171
Commercial paper	292	558
Accounts payable	497	532
Regulatory liabilities	71	69
Other	346	385
Total current liabilities	2,579	2,715
Long-term debt, net (excluding current portion)	9,642	8,677
Other liabilities:
Deferred tax liabilities	2,198	2,188
Regulatory liabilities	1,017	959
Pension and other benefit obligations	202	224
Other	967	947
Total other liabilities	4,384	4,318
Commitments and contingencies (Note 12)
Equity:
Alliant Energy Corporation common equity:
Common stock - $0.01 par value - 480,000,000 shares authorized; 256,969,227 and 256,690,222 shares outstanding	3	3
Additional paid-in capital	3,075	3,060
Retained earnings	4,080	3,954
Accumulated other comprehensive income	—	1
Shares in deferred compensation trust - 356,799 and 372,116 shares at a weighted average cost of $37.77 and $36.56 per share	(13)	(14)
Total Alliant Energy Corporation common equity	7,145	7,004
Total liabilities and equity	$23,750	$22,714

	For the Six Months
	Ended June 30,
	2025	2024
(in millions)
Cash flows from operating activities:
Net income	$387	$245
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	420	376
Deferred tax benefit and tax credits	(100)	(47)
Asset valuation charge for IPL’s Lansing Generating Station	—	60
Other	(1)	(4)
Other changes in assets and liabilities:
Accounts receivable	(289)	(242)
Accounts payable	(12)	75
Regulatory liabilities	71	(12)
Deferred income taxes (a)	86	86
Other	(70)	25
Net cash flows from operating activities	492	562
Cash flows used for investing activities:
Construction and acquisition expenditures:
Utility business	(976)	(870)
Other	(89)	(90)
Cash receipts on sold receivables	198	306
Proceeds from sales of partial ownership interests in West Riverside	—	123
Other	(27)	(2)
Net cash flows used for investing activities	(894)	(533)
Cash flows from financing activities:
Common stock dividends	(261)	(246)
Proceeds from issuance of long-term debt	1,162	969
Payments to retire long-term debt	—	(305)
Net change in commercial paper	(266)	(423)
Other	15	6
Net cash flows from financing activities	650	1
Net increase in cash, cash equivalents and restricted cash	248	30
Cash, cash equivalents and restricted cash at beginning of period	81	63
Cash, cash equivalents and restricted cash at end of period	$329	$93
Supplemental cash flows information:
Cash (paid) received during the period for:
Interest	($239)	($207)
Income taxes, net (a)	$91	$89
Significant non-cash investing and financing activities:
Accrued capital expenditures	$204	$272
Beneficial interest obtained in exchange for securitized accounts receivable	$235	$171

(a)2025 and 2024 include $97 million and $99 million, respectively, of proceeds from renewable tax credits transferred to other corporate taxpayers.

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