West Riverside Energy Center
Rock County, Wisconsin · EIA plant ID 64020 · Operator: Wisconsin Power & Light Co
Nameplate728MWSummer 689 MW
Generators4in service
Net generation4,139GWh12 mo to Aug 2026
Capacity factor69%gas/coal/oil units, summer MW
Heat rate6,692Btu/kWhfossil units, electric fuel, HHV
First online2020Runs 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) |
|---|---|---|---|
| 2020 | 1,936.5 | 46.1% | 7,215 |
| 2021 | 1,971.8 | 32.1% | 6,777 |
| 2022 | 3,131.3 | 50.5% | 6,967 |
| 2023 | 4,259.3 | 71.0% | 6,645 |
| 2024 | 4,961.1 | 81.4% | 6,591 |
| 2025 | 4,367 | 72.8% | 6,670 |
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 |
|---|---|---|---|---|---|---|---|---|
| CTG3 | Natural Gas Fired Combined Cycle | CT | 232.9 | 215.9 | May 2020 | Operating | — | coming soon |
| CTG4 | Natural Gas Fired Combined Cycle | CT | 232.9 | 212.2 | May 2020 | Operating | — | coming soon |
| PV1 | Solar Photovoltaic | PV | 4.4 | 4.4 | Apr 2021 | Operating | — | coming soon |
| STG2 | Natural Gas Fired Combined Cycle | CA | 257.4 | 256.1 | May 2020 | Operating | — | 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 | 56.6% | 412 MW |
| Wisconsin Electric Power Co | 27.5% | 200 MW |
| Madison Gas & Electric Co | 6.9% | 50 MW |
| Adams-Columbia Electric Coop | 4.5% | 33 MW |
| Rock Energy Cooperative | 3.7% | 27 MW |
| Central Wisconsin Elec Coop | 0.8% | 6 MW |
Nearby plants
Within 80 km.
| Riverside Energy Center | 675 MW | 0.5 km |
| HQC Rock River Solar Power Gen Station | 2 MW | 0.8 km |
| Rock River | retired | 1.3 km |
| Beloit Memorial Hospital Power Plant | 3 MW | 4.6 km |
| Paddock Solar | 65 MW | 4.9 km |
| Fairbanks Morse Engine | retired | 7.1 km |