Riverside Energy Center
Natural gas power plant · Rock County, Wisconsin
Nameplate capacity
675 MW
Rank in Wisconsin
#7
of 278 plants
In service since
2004
June 2004
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combined Cycle
- Operator
- Wisconsin Power & Light Co
- County
- Rock County
- Generating units
- 3
- Share of state capacity
- 3.42%
- Rank among natural gas plants in Wisconsin
- #3 of 41
- EIA plant code
- 55641
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| STG1 | Natural Gas Fired Combined Cycle | 277 MW | 243 MW | 2004 | Operating |
| CTG1 | Natural Gas Fired Combined Cycle | 199 MW | 147 MW | 2004 | Operating |
| CTG2 | Natural Gas Fired Combined Cycle | 199 MW | 145 MW | 2004 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Wisconsin
| Weston | Coal | 946 MW |
| West Riverside Energy Center | Natural gas | 728 MW |
| South Oak Creek | Coal | 642 MW |
| Fox Energy Center | Natural gas | 619 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 675 MW solar plant and a 675 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Wisconsin power plants · What Wisconsin actually generates