South Peak Wind
Judith Basin County, Montana · EIA plant ID 62939 · Operator: Allete Clean Energy
Nameplate80MWSummer 80 MW
Generators1in service
Net generation268GWh12 mo to Aug 2026
Capacity factor38%wind units, summer MW
Heat rate—thermal plants only
First online2020
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) |
|---|---|---|---|
| 2020 | 239.5 | 45.4% | — |
| 2021 | 293.5 | 41.9% | — |
| 2022 | 308.9 | 44.1% | — |
| 2023 | 248.2 | 35.4% | — |
| 2024 | 258.9 | 36.8% | — |
| 2025 | 243.1 | 34.7% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 41001 | Onshore Wind Turbine | WT | 80 | 80 | Apr 2020 | Operating | — | ge 2.82-127 |
Owner / operator
Operator: Allete Clean Energy. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Great American West Wind, LLC | 100.0% | 80 MW |
Nearby plants
Within 80 km.
| Spion Kop Wind Farm | 40 MW | 1.9 km |
| Morony | 63 MW | 43.7 km |
| Ryan | 55 MW | 46.6 km |
| Cochrane | 59 MW | 49.4 km |
| Rainbow (MT) | 59 MW | 49.9 km |
| Black Eagle | 27 MW | 53.1 km |