Alliant Energy Corp splits its revenue into 6 lines in its filings. The largest line in fiscal 2025, which ended Dec 31, 2025 was Ipl at $2.2 billion, 51% of the total.
USD in millions. The percent under a figure is the change from the year before.
| Line |
FY 2026
Mar 31, 2026
|
FY 2025
Dec 31, 2025
|
FY 2024
Dec 31, 2024
|
FY 2023
Dec 31, 2023
|
FY 2022
Dec 31, 2022
|
FY 2021
Dec 31, 2021
|
FY 2020
Dec 31, 2020
|
FY 2019
Dec 31, 2019
|
FY 2018
Dec 31, 2018
|
FY 2017
Dec 31, 2017
|
FY 2016
Dec 31, 2016
|
|---|---|---|---|---|---|---|---|---|---|---|---|
| Revenue |
4,418
|
4,362
|
3,981
|
4,027
|
4,205
|
3,669
|
3,416
|
3,648
|
3,534
|
3,382
|
3,320
|
| Electricity |
—
|
—
|
—
|
—
|
—
|
—
|
—
|
3,064
+2.1%
share 84.0%
|
3,000
+3.6%
share 84.9%
|
2,895
share 85.6%
|
—
|
| Ipl |
2,209
+5.5%
share 50.0%
|
2,208
+7.9%
share 50.6%
|
2,046
-3.0%
share 51.4%
|
2,110
-6.5%
share 52.4%
|
2,256
share 53.7%
|
—
|
—
|
—
|
—
|
—
|
—
|
| Wpl |
2,119
+11.8%
share 48.0%
|
2,065
+11.9%
share 47.3%
|
1,845
+1.0%
share 46.3%
|
1,827
-1.6%
share 45.4%
|
1,856
share 44.1%
|
—
|
—
|
—
|
—
|
—
|
—
|
| Gas Distribution |
—
|
—
|
—
|
—
|
—
|
—
|
—
|
455
+1.9%
share 12.5%
|
447
+11.4%
share 12.6%
|
401
share 11.9%
|
—
|
| All Other Segments |
90
+0.0%
share 2.0%
|
89
-1.1%
share 2.0%
|
90
+0.0%
share 2.3%
|
90
-3.2%
share 2.2%
|
93
+12.0%
share 2.2%
|
83
+12.2%
share 2.3%
|
74
-10.8%
share 2.2%
|
83
+109.6%
share 2.3%
|
40
+1.3%
share 1.1%
|
39
share 1.2%
|
—
|
| Other Utility |
40
-25.9%
share 0.9%
|
51
-5.6%
share 1.2%
|
54
+3.8%
share 1.4%
|
52
+6.1%
share 1.3%
|
49
+0.0%
share 1.2%
|
49
+0.0%
share 1.3%
|
49
+6.5%
share 1.4%
|
46
-4.2%
share 1.3%
|
48
+1.1%
share 1.4%
|
48
share 1.4%
|
—
|
How these figures are calculated
Annual columns are full-year amounts from the annual report (Form 10-K, 20-F, or 40-F). If a company restates a year, the latest filed number is shown. USD in millions. Each group is a separate split of total revenue, so the groups are not added together. Share of revenue is that line divided by total revenue. The first column adds the latest year-to-date segment amount to the last fiscal year and subtracts the year-ago year-to-date amount. More on our methodology.
Company profile
- Industry
- Electric & Other Services Combined (SIC 4931)
- Listed as
- LNT (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- WI
- Headquarters
- Madison, WI
- SEC filer status
- Large accelerated filer
- SEC CIK
- 352541
- Former names
- ALLIANT ENERGY CORP (until Oct 30, 2026); INTERSTATE ENERGY CORP (until May 13, 1999); WPL HOLDINGS INC (until Feb 23, 1998)
Other Electric & Other Services Combined companies
- Duke Energy CORP DUK
- Xcel Energy Inc XEL
- Exelon Corp EXC
- Consolidated Edison Inc ED
- PG&E Corp PCG
- Wec Energy Group, Inc. WEC
- Public Service Enterprise Group Inc PEG
- Ameren Corp AEE
Source: SEC EDGAR filings. This is company-reported data, not investment advice.