ALLIANT ENERGY CORP

Listed Company

LNTCIK 0000352541NasdaqLarge AcceleratedElectric & Other Services CombinedWisconsinFY ends Dec 31

Period

FY 2025

Revenue

$4.36B

Net Income

—

Total Assets

$24.99B

Equity

$7.33B

Shares Out

258.28M

Op. Cash Flow

$1.17B

LNT$74.81+18.34% · past yearDBEQ Basic

Daily closing prices

Business

Alliant Energy Corp is a regulated investor-owned utility holding company serving approximately 1,010,000 electric and 435,000 natural gas customers in the Midwest through subsidiaries IPL (Iowa) and WPL (Wisconsin). It provides generation, distribution and transportation of electricity and natural gas to retail customers, plus wholesale electric sales, with ancillary non-utility operations including transmission-company investments, venture funds, a wind farm, a gas-fired power plant lease, and supply-chain services. The company operates in Iowa and Wisconsin through rate-regulated utility operations subject to FERC, IUC and PSCW oversight.

Summary from 10-K filed 2026-02-20

Financials

Consolidated Statement of Income

Year Ended · In millions, except per-share amounts

Concept	FY 2025 2025-12-31	FY 2024 2024-12-31	FY 2023 2023-12-31	FY 2022 2022-12-31	FY 2021 2021-12-31
Electric utility	3,697	3,372	3,345	3,421	3,081
Gas utility	525	465	540	642	456
Other utility	51	54	52	49	49
Non-utility	89	90	90	93	83
Total revenues	4,362	3,981	4,027	4,205	3,669
Electric production fuel and purchased power	742	628	736	830	642
Electric transmission service	625	613	583	573	537
Cost of gas sold	263	224	299	389	258
Asset valuation charge for IPL's Lansing Generating Station	0	60	0	0	—
Other operation and maintenance	740	676	675	704	676
Depreciation and amortization	846	772	676	671	657
Taxes other than income taxes	121	122	115	110	104
Total operating expenses	3,337	3,095	3,084	3,277	2,874
Operating income (loss)	1,025	886	943	928	795
Interest expense	512	449	394	325	—
Equity income from unconsolidated investments, net	−60	−61	−61	−51	−62
Allowance for funds used during construction	−89	−75	−100	−60	−25
Other	1	−3	3	6	5
Total other (income) and deductions	364	310	236	220	195
Income before income taxes	661	576	707	708	600
Income tax expense (benefit)	−149	−114	4	22	−74
Net income attributable to common shareowners	810	690	703	686	659
Basic (in shares)	257	257	253	251	250
Diluted (in shares)	258	257	253	251	251
Basic (in dollars per share)	3.15	2.69	2.78	2.73	2.63
Diluted (in dollars per share)	3.14	2.69	2.78	2.73	2.63

Consolidated Balance Sheet

As of · In millions, except per-share amounts

Concept	FY 2025 2025-12-31	FY 2024 2024-12-31	FY 2023 2023-12-31	FY 2022 2022-12-31	FY 2021 2021-12-31
Cash and cash equivalents	556	81	62	20	39
Accounts receivable, less allowance for expected credit losses	476	427	475	516	440
Production fuel, at weighted average cost	46	54	62	53	51
Gas stored underground, at weighted average cost	49	55	79	132	82
Materials and supplies, at weighted average cost	193	186	202	140	113
Regulatory assets	155	210	232	166	104
Other	222	171	160	223	240
Total current assets	1,697	1,184	1,272	1,250	1,069
Property, plant and equipment, net	20,344	18,701	17,157	16,247	14,987
ATC Holdings	463	415	386	358	338
Other	231	224	216	201	179
Total investments	694	639	602	559	517
Regulatory assets	2,119	2,064	2,029	1,880	1,836
Deferred charges and other	137	126	177	227	144
Total other assets	2,256	2,190	2,206	2,107	1,980
Total assets	24,991	22,714	21,237	20,163	18,553
Current maturities of long-term debt	1,074	1,171	809	408	633
Commercial paper	88	558	475	642	515
Accounts payable	498	532	611	756	436
Accrued interest	124	112	—	—	—
Regulatory liabilities	88	69	107	206	186
Other	251	273	302	351	284
Total current liabilities	2,123	2,715	2,304	2,363	2,054
Long-term debt, net (excluding current portion)	10,954	8,677	8,225	7,668	6,735
Deferred tax liabilities	2,310	2,188	2,042	1,943	1,927
Regulatory liabilities	1,113	959	1,023	1,118	1,085
Pension and other benefit obligations	173	224	249	277	374
Other	984	947	617	518	388
Total other liabilities	4,580	4,318	3,931	3,856	3,774
Commitments and contingencies (Note 16)	—	—	—	—	—
Common Stock, Shares, Issued	257	257	—	—	—
Common stock	3	3	3	3	3
Additional paid-in capital	3,101	3,060	3,030	2,777	2,749
Retained earnings	4,243	3,954	3,756	3,509	3,250
Accumulated other comprehensive income	1	1	1	0	0
Shares in deferred compensation trust - 367,338 and 372,116 shares at a weighted average cost of $39.05 and $36.56 per share	−14	−14	−13	−13	−12
Total common equity	7,334	7,004	6,777	6,276	5,990
Total liabilities and equity	24,991	22,714	21,237	20,163	18,553

Consolidated Statement of Cash Flows

Year Ended · In millions, except per-share amounts

Concept	FY 2025 2025-12-31	FY 2024 2024-12-31	FY 2023 2023-12-31	FY 2022 2022-12-31	FY 2021 2021-12-31
Net income	810	690	703	686	—
Deferred tax expense (benefit) and tax credits	−158	−117	14	13	−78
Other	27	−22	−39	−17	35
Accounts receivable	−652	−547	−414	−672	−530
Derivative assets	6	13	149	−61	−142
Accounts payable	14	96	−122	78	37
Regulatory liabilities	140	−103	−149	22	−66
Deferred income taxes	252	259	84	4	193
Other	−116	66	−35	−33	−64
Net cash flows from operating activities	1,169	1,167	867	486	582
Utility construction and acquisition expenditures	−2,277	−2,052	−1,731	−1,392	−1,070
Other construction and acquisition expenditures	−206	−197	−123	−92	−99
Cash receipts on sold receivables	628	593	453	598	502
Proceeds from sales of partial ownership interests in West Riverside	0	123	120	0	0
Other	−41	−14	−120	−47	−61
Net cash flows from (used for) investing activities	−1,896	−1,547	−1,401	−933	−728
Common stock dividends	−521	−492	−456	−428	−403
Proceeds from issuance of common stock, net	23	23	246	25	28
Proceeds from issuance of long-term debt	2,470	1,613	1,455	1,338	600
Payments to retire long-term debt	−300	−809	−508	−633	−8
Net change in commercial paper	−470	83	−167	127	126
Other	0	−20	3	2	−13
Net cash flows from (used for) financing activities	1,202	398	573	431	130
Net increase (decrease) in cash, cash equivalents and restricted cash	475	18	39	−16	−16
Interest	−500	−434	−378	−311	−272
Income taxes, net	266	197	88	−6	−3
Accrued capital expenditures	178	224	364	382	141
Beneficial interest obtained in exchange for securitized accounts receivable	126	163	216	185	214

Filings

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Frequently asked questions

What is ALLIANT ENERGY CORP's CIK number?

ALLIANT ENERGY CORP's SEC CIK number is 0000352541 (352541). The CIK (Central Index Key) is the permanent identifier the SEC assigns to every EDGAR filer — unlike a ticker symbol, it never changes.

Where can I find ALLIANT ENERGY CORP's SEC filings?

All of ALLIANT ENERGY CORP's EDGAR filings — 10-K annual reports, 10-Q quarterly reports, 8-K material events, and insider transactions — are listed on this page, sourced live from SEC EDGAR.

When did ALLIANT ENERGY CORP last report earnings?

ALLIANT ENERGY CORP (LNT) most recently filed an earnings 8-K with the SEC on May 1, 2026, furnishing its results under Item 2.02 (Results of Operations and Financial Condition). The earnings press release is attached to that filing (accession 0000352541-26-000030). This is ALLIANT ENERGY CORP's most recent earnings filing of record — not a forecast of its next earnings date.

What is ALLIANT ENERGY CORP's most recent earnings 8-K?

ALLIANT ENERGY CORP's latest earnings 8-K (Item 2.02) was filed May 1, 2026 under accession 0000352541-26-000030. It carries the quarterly or annual earnings press release — the earliest official, SEC-filed version of the results.

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