WA · State grid profile
Washington power grid
Washington stands apart from most states because hydro supplies more than two-thirds of its operating nameplate capacity. Natural gas, wind, nuclear, and biomass provide additional diversity around that hydro foundation.
Final 2024 state totalsPreliminary 2025 facilitiesCommunity-reported data centers
Coverage quality
What is complete here?
Generation portfolio
Washington capacity by fuel
Hydro68.6%21,723 MW
Oil & gas12.8%4,068 MW
Wind10.7%3,387 MW
Nuclear3.8%1,200 MW
Coal2.3%730 MW
Biomass0.9%279 MW
Solar0.8%268 MW
Storage0%6 MW
Facility intelligence
Largest Washington power plants
| Plant | Primary fuel | Location | Utility | Operating capacity |
|---|---|---|---|---|
| Grand CouleePlant 6163 | Hydro | Grand Coulee, WAGrant County | U S Bureau of Reclamation | 6,809 MW |
| Chief JosephPlant 3921 | Hydro | Bridgeport, WADouglas County | USACE Northwestern Division | 2,456 MW |
| Rocky ReachPlant 3883 | Hydro | Wenatchee, WAChelan County | PUD No 1 of Chelan County - (WA) | 1,349 MW |
| WanapumPlant 3888 | Hydro | Beverly, WAGrant County | PUD No 2 of Grant County - (WA) | 1,220 MW |
| Columbia Generating StationPlant 371 | Nuclear | Richland, WABenton County | Energy Northwest- Columbia | 1,200 MW |
| BoundaryPlant 6433 | Hydro | Metaline, WAPend Oreille County | City of Seattle - (WA) | 1,160 MW |
| Priest RapidsPlant 3887 | Hydro | Mattawa, WAGrant County | PUD No 2 of Grant County - (WA) | 950 MW |
| WellsPlant 3886 | Hydro | Chelan, WAChelan County | PUD No 1 of Douglas County - (WA) | 867 MW |
| Little GoosePlant 3926 | Hydro | Dayton, WAColumbia County | USACE Northwestern Division | 810 MW |
| Lower MonumentalPlant 3927 | Hydro | Kahlotus, WAWalla Walla County | USACE Northwestern Division | 810 MW |
Methodology
Transparent by design
State totals and fuel mix use finalized EIA-860 2024 generator data. The facility table uses the EIA-860 2025 Early Release and is preliminary. Data-center counts use OpenStreetMap community records and measure mapped coverage, not the full market.