Grant Plains Wind, LLC
Grant County, Oklahoma · EIA plant ID 60545 · Operator: Southern Power Co
Nameplate147MWSummer 147 MW
Generators1in service
Net generation546GWh12 mo to Aug 2026
Capacity factor42%wind units, summer MW
Heat rate—thermal plants only
First online2016
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) |
|---|---|---|---|
| 2016 | 17.2 | 15.7% | — |
| 2017 | 521 | 40.4% | — |
| 2018 | 537.4 | 41.7% | — |
| 2019 | 538.8 | 41.8% | — |
| 2020 | 529.4 | 41.0% | — |
| 2021 | 534.8 | 41.5% | — |
| 2022 | 564.5 | 43.8% | — |
| 2023 | 506.7 | 39.4% | — |
| 2024 | 536 | 41.5% | — |
| 2025 | 473.4 | 36.8% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| WT | Onshore Wind Turbine | WT | 147.2 | 147 | Dec 2016 | Operating | — | siemens SWT-2.3-108 |
Owner / operator
Operator: Southern Power Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Grant Plains Wind, LLC | 100.0% | 147 MW |
Nearby plants
Within 80 km.
| Grant Wind, LLC | 152 MW | 4.9 km |
| Rock Falls Wind Farm LLC | 155 MW | 25.2 km |
| NextEra-Blackwell Wind, LLC | 60 MW | 29.1 km |
| Anthony | 11 MW | 35.2 km |
| Flat Ridge 5 | 153 MW | 39.7 km |
| Viola Generating Station | — | 40.2 km |