Power plants operated by Wisconsin Power & Light Co
Wisconsin Power & Light Co operates 31 power plants in the 2025 EIA-860 data, with 5,774 MW of nameplate capacity, the 45th-largest fleet among the 5,826 operators on file. They are spread over three states: Wisconsin, Minnesota and Iowa. Natural gas is 43% of the capacity; the largest site is Columbia (WI). Its oldest working unit dates from 1915, at Prairie Du Sac. Units added from 2020 to 2025 total 2,162 MW.
- Natural gas2,498 MW43%
- Coal1,526 MW26%
- Solar1,103 MW19%
- Wind421 MW7.3%
- Battery storage184 MW3.2%
- Hydroelectric43.1 MW0.7%
Capacity by decade it came online
CoalNatural gasHydroelectricWindSolarBattery storage
Above the line: capacity operating in 2025. Below: capacity retired at these plants.
Plants
| Plant | State | Runs on | Capacity | First unit |
|---|---|---|---|---|
| Columbia (WI) | Wisconsin | Coal | 1,112 MW | 1975 |
| West Riverside Energy Center | Wisconsin | Natural gas | 728 MW | 2020 |
| Riverside Energy Center | Wisconsin | Natural gas | 675 MW | 2004 |
| Edgewater | Wisconsin | Coal | 414 MW | 1985 |
| South Fond Du Lac | Wisconsin | Natural gas | 382 MW | 1993 |
| Alliant Energy Neenah | Wisconsin | Natural gas | 371 MW | 2000 |
| Sheboygan Falls | Wisconsin | Natural gas | 347 MW | 2005 |
| Grant County | Wisconsin | Solar | 300 MW | 2024 |
| Wood County | Wisconsin | Solar | 225 MW | 2022 |
| Bent Tree Wind Farm Phase 1 | Minnesota | Wind | 201 MW | 2011 |
| Kossuth | Iowa | Wind | 152 MW | 2020 |
| Onion River | Wisconsin | Solar | 150 MW | 2023 |
| Springfield Solar (WI) | Wisconsin | Solar | 100 MW | 2023 |
| Wautoma Solar | Wisconsin | Solar | 99 MW | 2023 |
| Crawfish River | Wisconsin | Solar | 75 MW | 2023 |
| Cedar Ridge | Wisconsin | Wind | 67.7 MW | 2008 |
| Paddock Solar | Wisconsin | Solar | 65 MW | 2023 |
| Albany Solar (WI) | Wisconsin | Solar | 50 MW | 2023 |
| Bear Creek (WI) | Wisconsin | Solar | 50 MW | 2022 |
| Beaver Dam Solar | Wisconsin | Solar | 50 MW | 2023 |
| Cassville Solar | Wisconsin | Solar | 50 MW | 2023 |
| North Rock | Wisconsin | Solar | 50 MW | 2022 |
| Prairie Du Sac | Wisconsin | Hydroelectric | 33.4 MW | 1915 |
| Kilbourn | Wisconsin | Hydroelectric | 9.7 MW | 1926 |
| Portage Industrial Battery | Wisconsin | Battery storage | 5 MW | 2022 |
| Boaz Microgrid Battery | Wisconsin | Battery storage | 3.6 MW | 2023 |
| Janesville Community Solar | Wisconsin | Solar | 2.3 MW | 2025 |
| Kohler Solar | Wisconsin | Solar | 2.3 MW | 2022 |
| UW Kegonsa Customer Hosted Solar | Wisconsin | Solar | 2.3 MW | 2025 |
| Nortera Customer Hosted Solar | Wisconsin | Solar | 1.6 MW | 2025 |
| Rock County Customer Hosted Solar | Wisconsin | Solar | 1.4 MW | 2025 |