Income-statement, balance-sheet and cash-flow figures from SEC filings, plus a debt profile anchored in the latest 10-K and updated by each 10-Q and debt exhibit.
Italic rows are computed from reported lines — open a row's info icon for its formula. Values reflect the latest filing (restatements included); per-share figures on today's split basis. Click a value for its source filing.
TTM: trailing twelve months through the latest reported quarter — flows sum the last four quarters, balances take the latest. 3Y/5Y/10Y columns are trailing CAGR from the newest fiscal year; blank where an endpoint is missing or negative. (G): the company's own guidance — a (G) column is a guided period not yet reported; a G marker shows how the reported figure landed against the guided range. Non-GAAP-basis guidance (*) is shown as stated and never judged against GAAP actuals.
Capital Returned to Shareholders
Cash spent on share repurchases and dividends per fiscal year, as reported on the cash-flow statement.
Across FY2008–FY2025: $5.44B in dividends.
Debt Profile
Completed filing coverage through Feb 20, 2026 · latest terminal result Mar 19, 2026
Annual debt figures are established from 10-K filings and updated by subsequent 10-Q and 8-K disclosures. Instrument balances are not summed into a company total unless the filing itself reports that total.
Debt data is being processed. Please check back later.
1 filing has incomplete source or extraction coverage. Verified observations are shown; missing observations do not establish that debt was unchanged.
On August 18, 2026, Interstate Power and Light Company (“IPL”), a subsidiary of Alliant Energy Corporation, entered into an Underwriting Agreement (the “Underwriting Agreement”) with Mizuho Securities USA LLC, PNC Capital Markets LLC, U.S. Bancorp Investments, Inc., and Wells Fargo Securities, LLC, as representatives of the several underwriters listed therein (the “Underwriters”), pursuant to which IPL agreed to sell, and the Underwriters agreed to purchase, subject to the terms and conditions set forth therein, $500 million aggregate principal amount of IPL’s 5.100% Senior Debentures due 2031 (the “Debentures”), in a public offering (the “Offering”). The Debentures are to be issued under an Indenture dated as of August 20, 2003, between IPL and The Bank of New York Mellon Trust Company, N.A., as successor trustee (the “Indenture”), pursuant to an Officer’s Certificate provided pursuant to the Indenture setting forth the terms of the Debentures, dated as of August 21, 2026 (the “Certificate”). The Offering is expected to close, subject to standard closing conditions, on August 21, 2026.
Issuer evidence: On August 18, 2026, Interstate Power and Light Company (“IPL”), a subsidiary of Alliant Energy Corporation, entered into an Underwriting Agreement (the “Underwriting Agreement”) with Mizuho Securities USA LLC, PNC Capital Markets LLC, U.S. Bancorp Investments, Inc., and Wells Fargo Securities, LLC, as representatives of the several underwriters listed therein (the “Underwriters”), pursuant to which IPL agreed to sell, and the Underwriters agreed to purchase, subject to the terms and conditions set forth therein, $500 million aggregate principal amount of IPL’s 5.100% Senior Debentures due 2031 (the “Debentures”), in a public offering (the “Offering”).
Supporting evidence: On August 18, 2026, Interstate Power and Light Company (“IPL”), a subsidiary of Alliant Energy Corporation, entered into an Underwriting Agreement (the “Underwriting Agreement”) with Mizuho Securities USA LLC, PNC Capital Markets LLC, U.S. Bancorp Investments, Inc., and Wells Fargo Securities, LLC, as representatives of the several underwriters listed therein (the “Underwriters”), pursuant to which IPL agreed to sell, and the Underwriters agreed to purchase, subject to the terms and conditions set forth therein, $500 million aggregate principal amount of IPL’s 5.100% Senior Debentures due 2031 (the “Debentures”), in a public offering (the “Offering”).
Supporting evidence: On August 18, 2026, Interstate Power and Light Company (“IPL”), a subsidiary of Alliant Energy Corporation, entered into an Underwriting Agreement (the “Underwriting Agreement”) with Mizuho Securities USA LLC, PNC Capital Markets LLC, U.S. Bancorp Investments, Inc., and Wells Fargo Securities, LLC, as representatives of the several underwriters listed therein (the “Underwriters”), pursuant to which IPL agreed to sell, and the Underwriters agreed to purchase, subject to the terms and conditions set forth therein, $500 million aggregate principal amount of IPL’s 5.100% Senior Debentures due 2031 (the “Debentures”), in a public offering (the “Offering”).
Price & Valuation
Multiples computed on the strict TTM/EV methodology — today's snapshot against peers, and each ratio recomputed as of past filing dates.
Valuation
EV/Revenue
6.30×
Peer median 4.71×
EV/EBIT
27.37×
Peer median 21.25×
P/E (TTM)
20.63×
Peer median 19.98×
Peer medians compare against the 29 similar-size Utilities - Regulated Electric companies (of 33 listed).
Valuation over time computed as of each quarter's filing date
Revenue Breakdown
Annual revenue as the company disaggregates it in its own XBRL filings. Years a component wasn't reported show a dash.
Share mode is each component's slice of the reported components that year — issuers rarely tag every revenue dollar, so slices need not sum to total revenue.
By Segment (USD)
Component
FY2025
FY2024
FY2023
FY2022
FY2021
FY2020
FY2019
FY2018
Electric
$3,697,000,000
$3,372,000,000
$3,345,000,000
$3,421,000,000
$3,081,000,000
$2,920,000,000
$3,064,000,000
$3,000,000,000
Ipl
$2,208,000,000
$2,046,000,000
$2,110,000,000
$2,256,000,000
—
—
—
—
Wpl
$2,065,000,000
$1,845,000,000
$1,827,000,000
$1,856,000,000
—
—
—
—
Gas
$525,000,000
$465,000,000
$540,000,000
$642,000,000
$456,000,000
$373,000,000
$455,000,000
$447,000,000
All Other Segments
$89,000,000
$90,000,000
$90,000,000
$93,000,000
$83,000,000
$74,000,000
$83,000,000
$39,000,000
Other Utility
$51,000,000
$54,000,000
$52,000,000
$49,000,000
$49,000,000
$49,000,000
$46,000,000
$48,000,000
Electricity
—
—
—
—
—
—
$3,063,600,000
$3,000,300,000
Gas Distribution
—
—
—
—
—
—
$455,200,000
$446,600,000
Segment Operating Income
Annual operating income by business segment, as tagged in the company's own XBRL filings. Segments need not sum to the consolidated figure — corporate costs and eliminations are typically unallocated.
