Power plants in Whatcom County, Washington
11 operating power plants in Whatcom County, Washington, with 1,717 MW of nameplate capacity, largest first. From EIA-860M, August 2026.
Largest power plants in Whatcom County
| # | Plant | MW | GWh, 2025 | Capacity factor |
|---|---|---|---|---|
| 1 | RossHydro | 450 | 532 | 13.5% |
| 2 | Ferndale Generating StationNatural gas | 286 | 1,324 | 52.9% |
| 3 | GorgeHydro | 207 | 769 | 42.3% |
| 4 | DiabloHydro | 182 | 518 | 32.4% |
| 5 | EncogenNatural gas | 176 | 354 | 22.9% |
| 6 | WhitehornNatural gas | 169 | 65.2 | 4.4% |
| 7 | Sumas Power PlantNatural gas | 126 | 398 | 36.2% |
| 8 | Upper BakerHydro | 105 | 333 | 36.2% |
| 9 | Koma KulshanHydro | 12 | 32.3 | 30.8% |
| 10 | Glacier Battery StorageBattery storage | 2.0 | 0.0 | – |
| 11 | Nooksack HydroHydro | 1.5 | 20.2 | 153.5% |
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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