Power Plants in Wisconsin

Wisconsin's power sector in numbers

Bywatts maps 141 operating power plants with 16.2 GW of nameplate capacity in Wisconsin. Coal leads with 41% of that capacity across 15 plants, followed by Natural Gas (40%) and Nuclear (8%). The inventory also includes 36 plants (3.0 GW) that EIA-860 lists as retired, 4 partly retired with no operable units of their recorded fuel and 4 never built; the largest retired plant is PLEASANT PRAIRIE (1,235 MW, retired 2018).

The largest operating plants are ELM ROAD GENERATING STATION (1,403 MW, Coal, WISCONSIN ELECTRIC POWER CO), POINT BEACH NUCLEAR PLANT (1,311 MW, Nuclear, NEXTERA ENERGY POINT BEACH LLC) and SOUTH OAK CREEK (1,240 MW, Coal, WISCONSIN ELECTRIC POWER CO).

Of the 141 operating plants with a recorded commissioning year, 37 came online in 2000 or later and 10 in 2010 or later; the busiest decade for new capacity was the 2000s (4.8 GW).

The largest operators by operating capacity are WISCONSIN ELECTRIC POWER CO (13 plants, 5.2 GW), WISCONSIN POWER & LIGHT CO (8 plants, 3.0 GW) and WISCONSIN PUBLIC SERVICE CORP (15 plants, 2.2 GW).

Retail electricity sales in Wisconsin reached 70.2 TWh in 2025, up 2.2% over ten years and up 2.8% year on year; residential customers took 32.7% of it. The average retail price across all sectors was 13.34 cents per kWh, up 24.3% since 2015.

The database also maps 280 named substations (21 of the 275 with a recorded voltage are rated 345 kV or above), 5 data centers (operators include 5Nines Data / Network222, Fiore Companies and SupraNet Communications), 102 solar installers and 40 solar companies in Wisconsin.

Operating capacity by fuel

Retail electricity sales

Sources: HIFLD power-plant inventory (capacity, fuel, operator), EIA-860 (commissioning year, retirements, operable capacity), EIA retail sales and revenue series through January 2026. Counts are of plants Bywatts lists, not every generator in the state.