Green River Wind Farm
Lee County, Illinois · EIA plant ID 60471 · Operator: Geronimo Energy
Nameplate194MWSummer 194 MW
Generators1in service
Net generation504GWh12 mo to Aug 2026
Capacity factor30%wind units, summer MW
Heat rate—thermal plants only
First online2019
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), wind 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.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2019 | 70.1 | 24.6% | — |
| 2020 | 527.6 | 30.9% | — |
| 2021 | 543.8 | 31.9% | — |
| 2022 | 613.9 | 36.1% | — |
| 2023 | 503.8 | 29.6% | — |
| 2024 | 545.2 | 31.9% | — |
| 2025 | 497.1 | 29.2% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| GRNRV | Onshore Wind Turbine | WT | 194.3 | 194.3 | Nov 2019 | Operating | — | gamesa G126-2.5 |
Owner / operator
Operator: Geronimo Energy. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Geronimo Energy | 100.0% | 194 MW |
Nearby plants
Within 80 km.
| Ohio Solar LLC | 5 MW | 8.2 km |
| Big Sky Wind LLC | 239 MW | 8.7 km |
| SV CSG Paloma Solar | 4 MW | 10.2 km |
| Walnut Ridge Wind Farm | 212 MW | 13.9 km |
| Invenergy Nelson Expansion LLC | 380 MW | 17.6 km |
| Nelson Energy Center | 628 MW | 17.6 km |