Rock Falls Wind Farm LLC
Kay County, Oklahoma · EIA plant ID 61261 · Operator: Public Service Co of Oklahoma
Nameplate155MWSummer 155 MW
Generators1in service
Net generation387GWh12 mo to Jan 2026
Capacity factor29%wind units, summer MW
Heat rate—thermal plants only
First online2017
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) |
|---|---|---|---|
| 2017 | 45.6 | 39.7% | — |
| 2018 | 572.8 | 42.3% | — |
| 2019 | 462 | 34.1% | — |
| 2020 | 559.4 | 41.2% | — |
| 2021 | 549.6 | 40.6% | — |
| 2022 | 378.5 | 28.0% | — |
| 2023 | 378.2 | 28.0% | — |
| 2024 | 535.9 | 39.5% | — |
| 2025 | 374.3 | 27.7% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| RF1 | Onshore Wind Turbine | WT | 154.5 | 154.5 | Dec 2017 | Operating | — | siemens SWT-2.3-108 |
Owner / operator
Operator: Public Service Co of Oklahoma. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Public Service Co of Oklahoma | 100.0% | 155 MW |
Nearby plants
Within 80 km.
| NextEra-Blackwell Wind, LLC | 60 MW | 9 km |
| Grant Wind, LLC | 152 MW | 23.9 km |
| Frontier Windpower | 200 MW | 24 km |
| Grant Plains Wind, LLC | 147 MW | 25.2 km |
| Slate Creek Wind Project LLC | 150 MW | 26.8 km |
| Kay Wind, LLC | 299 MW | 26.8 km |