18.47¢
per kWh, 2025
[ Alliant Energy Wisconsin / WI ]
Alliant Energy Wisconsin electricity rates in Wisconsin
NO RATE CASE ON FILE · DATA 2025
change in average rate, 2024→2025
+9.3%
vs 2024
440,746
residential customers
+38.1%
since 2020
What your bill becomes
Bill today
No change on file
Difference / month · / year
Estimated at Alliant Energy Wisconsin's average effective residential rate (18.47¢/kWh, EIA, all charges included). Your tariff, fees and taxes differ.
Rate history 2015–2025
| Year | ¢/kWh | Change | Customers |
|---|---|---|---|
| 2015 | 12.91¢ | — | 405,526 |
| 2016 | 13.20¢ | +2.3% | 405,804 |
| 2017 | 13.86¢ | +5.0% | 410,620 |
| 2018 | 13.09¢ | −5.6% | 413,571 |
| 2019 | 13.66¢ | +4.3% | 414,268 |
| 2020 | 13.37¢ | −2.1% | 418,151 |
| 2021 | 13.49¢ | +0.9% | 424,363 |
| 2022 | 15.18¢ | +12.5% | 429,581 |
| 2023 | 16.14¢ | +6.3% | 433,061 |
| 2024 | 16.89¢ | +4.7% | 437,211 |
| 2025 | 18.47¢ | +9.3% | 440,746 |
How this compares
18.08¢
Wisconsin average, 2025
+2.2%
Alliant Energy Wisconsin vs WI 2025 average
+7.2%
vs US 2025 average
#4
priciest in WI
Alliant Energy Wisconsin files with the EIA as Wisconsin Power & Light Co (utility ID 20856).
Serves 35 counties in Wisconsin: Adams, Calumet, Columbia, Crawford, Dane, Dodge, Fond Du Lac, Grant, Green, Green Lake, Iowa, Jackson, Jefferson, Juneau, Kenosha, Lafayette, Langlade, Manitowoc, Marathon, Marquette, Menominee, Monroe, Oconto, Portage, Richland, Rock, Sauk, Shawano, Sheboygan, Vernon, Walworth, Waupaca, Waushara, Winnebago, Wood. 320 ZIP codes.
What the numbers show
Since 2015, Alliant Energy Wisconsin's average residential rate has gone from 12.91¢ to 18.47¢ per kWh: +43.1% over 10 years, or about +3.6% a year. It rose in 8 of the 10 years we can compare, and the biggest one-year increase was +12.5% in 2022. The largest drop was −5.6% in 2018.
For a home using 667 kWh a month, the Wisconsin average, Alliant Energy Wisconsin's 2025 rate works out to about $1,478 a year, $31 more than at Wisconsin's average rate of 18.08¢. Of the 67 Wisconsin utilities in our data with a 2025 price, it is the 4th most expensive.
Alliant Energy Wisconsin served 405,526 homes in 2015 and 440,746 in 2025 (+8.7%), about 15% of Wisconsin's residential electricity customers.
Who sets Alliant Energy Wisconsin's rates
Alliant Energy Wisconsin is investor-owned, so it can change its base rates only by filing a rate case with the Public Service Commission of Wisconsin. The commission holds hearings and takes public comment before it rules, and it usually approves less than the company asks for. Fuel and other pass-through charges can change between rate cases.
Commission contact: Public Service Commission of Wisconsin. How we calculate every figure on this page: methodology.
Questions
Is Alliant Energy Wisconsin raising rates in 2026?
No rate case for Alliant Energy Wisconsin is on file with the Public Service Commission of Wisconsin in our tracker. Its average residential rate moved +9.3% from 2024 to 2025. We check the commission docket monthly.
What does Alliant Energy Wisconsin charge per kWh?
Alliant Energy Wisconsin's average effective residential rate was 18.47¢ per kWh in 2025 (EIA-861, revenue divided by sales, all charges included). Wisconsin's 2025 average was 18.08¢.
How much have Alliant Energy Wisconsin rates gone up in five years?
+38.1% between 2020 and 2025, against +31.1% for Wisconsin as a whole over the latest five-year window.
How many customers does Alliant Energy Wisconsin have in Wisconsin?
440,746 residential customers in 2025, across 35 counties including Adams, Calumet, Columbia, according to the EIA-861 survey.
Where do these numbers come from?
Rates and customer counts are from the US Energy Information Administration's annual EIA-861 survey, which every US utility files. Nothing here is a utility bill; use it to understand the direction and size of changes.
Sources
- EIA-861 Sales to Ultimate Customers, 2015–2025 (released 2026-10-07)
- EIA-861M monthly state averages through Jul 2026
- NREL utility-by-ZIP lookup (2024)