Power plants in Chelan County, Washington
4 operating power plants in Chelan County, Washington, with 2,712 MW of nameplate capacity, largest first. From EIA-860M, August 2026.
Largest power plants in Chelan County
| # | Plant | MW | GWh, 2025 | Capacity factor |
|---|---|---|---|---|
| 1 | Rocky ReachHydro | 1,349 | 5,241 | – |
| 2 | WellsHydro | 789 | 3,708 | – |
| 3 | Rock IslandHydro | 514 | 2,227 | 40.4% |
| 4 | ChelanHydro | 59 | 325 | 62.7% |
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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