Power plants in Mason County, Washington
3 operating power plants in Mason County, Washington, with 136 MW of nameplate capacity, largest first. From EIA-860M, August 2026.
Largest power plants in Mason County
| # | Plant | MW | GWh, 2025 | Capacity factor |
|---|---|---|---|---|
| 1 | Cushman 2Hydro | 85 | 160 | 21.7% |
| 2 | Cushman 1Hydro | 50 | 108 | – |
| 3 | Lilliwaup Falls GeneratingHydro | 1.4 | 5.3 | 43.4% |
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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