Weston
Weston is a coal plant in Marathon County, Wisconsin, operated by Wisconsin Public Service Corp. It ranks fifth by nameplate capacity among Wisconsin’s 271 power plants. Retired units here add up to 218 MW across 4 units, taken out of service between 2015 and 2023. Its biggest unit, rated at 595 MW, is the third-largest single generator in Wisconsin.
Nameplate capacity, 2025
946 MW
888 MW net summer capacity
2 operable units
- Coal steam946 MW100%
Unit by unit, 1954 to 2025
operating in 2025retiredbar height follows unit size
Unit 1 Coal steam, 60 MW, 1954–2015
Unit 2 Gas steam turbine, 81.6 MW, 1960–2023
Unit 31 Gas combustion turbine, 19.6 MW, 1969–2023
Unit 32 Gas combustion turbine, 56.7 MW, 1973–2023
Unit 3 Coal steam, 350 MW, 1981
Unit 4 Coal steam, 595 MW, 2008
Among Wisconsin’s plants
Largest plants in the state by nameplate capacity, with the plants ranked next to this one.
- 1Elm Road Generating Station1,403 MW
- 2Point Beach Nuclear Plant1,311 MW
- 3Port Washington Generating Station1,230 MW
- 4Columbia (WI)1,112 MW
- 5Westonthis plant
- 6West Riverside Energy Center728 MW
- 7Riverside Energy Center675 MW
Other rankings
- All US power plants
- 330th of 14,286
- US coal plants
- 84th of 195
- Coal plants in Wisconsin
- 3rd of 7
- Plants in the MISO (Midcontinent) balancing area
- 50th of 2,383
- Plants run by Wisconsin Public Service Corp
- 1st of 25
Operable units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 3 | Coal steam | 350 MW | 335 MW | 1981 | Operating |
| 4 | Coal steam | 595 MW | 553 MW | 2008 | Operating |
Retired units
| Unit | Technology | Nameplate | In service |
|---|---|---|---|
| 1 | Coal steam | 60 MW | 1954–2015 |
| 2 | Gas steam turbine | 81.6 MW | 1960–2023 |
| 31 | Gas combustion turbine | 19.6 MW | 1969–2023 |
| 32 | Gas combustion turbine | 56.7 MW | 1973–2023 |
Who owns it
Shares are weighted by the nameplate capacity of each unit an owner holds.
| Owner | Share of capacity |
|---|---|
| Wisconsin Public Service Corp | 44.1% |
| Dairyland Power Coop | 18.9% |
| Wisconsin Public Service Corp (sole owner of the other units) | 37.0% |
Grid and site
- Balancing area
- MISO (Midcontinent)
- Reliability region
- ReliabilityFirst
- Highest grid connection voltage
- 345 kV
- Water source
- Wisconsin River
- Nearest town on record
- Rothschild
- Operator type
- Utility
- Coordinates
- 44.861°N, 89.655°W
Closest plants
| Plant | Runs on | Capacity | Distance |
|---|---|---|---|
| Weston RICE | Natural gas | 132 MW | 0.3 mi south |
| Rothschild Biomass Cogen Facility | Biomass and waste | 57.5 MW | 2.3 mi northeast |
| Domtar Paper Company Rothschild | Hydroelectric | 1.1 MW | 2.3 mi northeast |
| Mosinee Mill | Biomass and waste | 23.4 MW | 5.3 mi south |
| Wausau | Hydroelectric | 5.4 MW | 6.8 mi north |
| Du Bay | Hydroelectric | 7.2 MW | 13.5 mi south |
| Merrill | Hydroelectric | 2.3 MW | 22.0 mi north |
| Alexander | Hydroelectric | 4.2 MW | 23.1 mi north |