Riverside Energy Center
Rock County, Wisconsin · EIA plant ID 55641 · Operator: Wisconsin Power & Light Co
Nameplate675MWSummer 535 MW
Generators3in service
Net generation3,419GWh12 mo to Aug 2026
Capacity factor73%gas/coal/oil units, summer MW
Heat rate7,050Btu/kWhfossil units, electric fuel, HHV
First online2004Runs as baseload
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), gas/coal/oil units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2004 | 679.2 | 22.1% | 7,435 |
| 2005 | 1,734.6 | 33.1% | 7,142 |
| 2006 | 1,067.1 | 20.4% | 7,291 |
| 2007 | 1,344.6 | 25.7% | 7,247 |
| 2008 | 956.8 | 18.2% | 7,232 |
| 2009 | 983.6 | 18.8% | 7,209 |
| 2010 | 703.1 | 13.4% | 7,094 |
| 2011 | 859.6 | 16.4% | 7,144 |
| 2012 | 1,148.8 | 22.0% | 7,382 |
| 2013 | 1,178.9 | 23.2% | 7,412 |
| 2014 | 1,833.4 | 36.1% | 7,329 |
| 2015 | 2,708.1 | 53.9% | 7,168 |
| 2016 | 2,290.7 | 46.0% | 7,162 |
| 2017 | 1,274.8 | 26.1% | 7,298 |
| 2018 | 2,839.9 | 56.6% | 7,255 |
| 2019 | 4,042.6 | 81.3% | 7,303 |
| 2020 | 2,662.3 | 53.7% | 7,404 |
| 2021 | 3,226.6 | 66.6% | 7,202 |
| 2022 | 2,750.6 | 56.0% | 7,106 |
| 2023 | 3,543 | 75.5% | 6,742 |
| 2024 | 3,386 | 72.7% | 6,850 |
| 2025 | 3,308 | 70.6% | 6,908 |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| CTG1 | Natural Gas Fired Combined Cycle | CT | 198.9 | 146.7 | Jun 2004 | Operating | — | coming soon |
| CTG2 | Natural Gas Fired Combined Cycle | CT | 198.9 | 144.8 | Jun 2004 | Operating | — | coming soon |
| STG1 | Natural Gas Fired Combined Cycle | CA | 277.1 | 243.3 | Jun 2004 | Operating | — | coming soon |
| PV1 | Solar Photovoltaic | PV | 4 | 4 | planned May 2021 | not_current | — | coming soon |
Owner / operator
Operator: Wisconsin Power & Light Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Wisconsin Power & Light Co | 100.0% | 675 MW |
Nearby plants
Within 80 km.
| West Riverside Energy Center | 728 MW | 0.5 km |
| HQC Rock River Solar Power Gen Station | 2 MW | 0.5 km |
| Rock River | retired | 0.8 km |
| Beloit Memorial Hospital Power Plant | 3 MW | 4.4 km |
| Paddock Solar | 65 MW | 5.3 km |
| Fairbanks Morse Engine | retired | 7.2 km |