Power plants in Jefferson County, Oregon
8 operating power plants in Jefferson County, Oregon, with 532 MW of nameplate capacity, largest first. From EIA-860M, August 2026.
Plants
8
Nameplate capacity
532 MW
Net generation, 2025
1.28 TWh
6 of 8 plants reported
Largest power plants in Jefferson County
| # | Plant | MW | GWh, 2025 | Capacity factor |
|---|---|---|---|---|
| 1 | Round ButteHydro | 373 | 772 | 23.7% |
| 2 | PeltonHydro | 110 | 400 | 41.6% |
| 3 | Warm Springs Power EnterprisesHydro | 20 | 70.5 | 41.1% |
| 4 | Adams Solar CenterSolar | 10 | – | – |
| 5 | Elbe Solar CenterSolar | 10 | – | – |
| 6 | Opal Springs HydroHydro | 4.3 | 28.0 | 74.3% |
| 7 | 45 Mile Hydroelectric ProjectHydro | 3.0 | 5.0 | 19.2% |
| 8 | Green Solar LLC (CSG)Solar | 2.9 | 6.2 | 24.3% |
MW is the nameplate capacity of operating generators and batteries. Source: EIA-860M August 2026, published 2026-09-24, and EIA-923 2025. Page updated 2026-10-04. Data sources
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