Directory of Power Plants in Washington
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Grimes Way | Washington State University | Pullman, WA | Avista Corporation (AVA) | 138.0 MWh | Dec 2004 | Jun 2026 | Natural Gas : 57.1% Distillate Fuel Oil : 42.9% |
| Grand Coulee | U S Bureau of Reclamation | Grand Coulee, WA | Bonneville Power Administration (BPAT) | 18.9 TWh | Feb 1941 | Jun 2026 | Water |
| Grays Harbor Energy Facility | Invenergy Services LLC | Elma, WA | Bonneville Power Administration (BPAT) | 2.0 TWh | Apr 2008 | Jun 2026 | Natural Gas |
| Goodnoe Hills | PacifiCorp | Goldendale, WA | Bonneville Power Administration (BPAT) | 268.3 GWh | May 2008 | Dec 2025 | Wind |
| Goose Prairie Solar | Goose Prairie Solar LLC | Moxee, WA | Bonneville Power Administration (BPAT) | 179.1 GWh | Nov 2024 | Jun 2026 | Solar |
| Goldendale Generating Station | Puget Sound Energy Inc | Goldendale, WA | Puget Sound Energy, Inc. (PSEI) | 2.1 TWh | Jul 2004 | Dec 2024 | Natural Gas |
| Gorge | City of Seattle - (WA) | Rockport, WA | Seattle City Light (SCL) | 938.6 GWh | Aug 1924 | Jun 2026 | Water |
Browse Power Plants By Washington Counties
Figures are based on June 2026 generation numbers.| County | State Rank | Active Plants | Jun 2026 Generation |
|---|---|---|---|
| Grant County, WA | # 1 | 9 | 29.8 TWh |
| Chelan County, WA | # 2 | 6 | 13.6 TWh |
| Douglas County, WA | # 3 | 1 | 11.7 TWh |
| Benton County, WA | # 4 | 7 | 10.1 TWh |
| Lewis County, WA | # 5 | 8 | 7.3 TWh |
| Klickitat County, WA | # 6 | 17 | 5.4 TWh |
| Pend Oreille County, WA | # 7 | 3 | 4.4 TWh |
| Whatcom County, WA | # 8 | 13 | 4.1 TWh |
| Cowlitz County, WA | # 9 | 6 | 3.7 TWh |
| Columbia County, WA | # 10 | 4 | 3.3 TWh |
| Walla Walla County, WA | # 11 | 4 | 3.2 TWh |
| Grays Harbor County, WA | # 12 | 6 | 2.1 TWh |
| Pierce County, WA | # 13 | 14 | 2.1 TWh |
| Whitman County, WA | # 14 | 6 | 1.8 TWh |
| Skagit County, WA | # 15 | 4 | 1.5 TWh |
| County | State Rank | Active Plants | Jun 2026 Generation |
|---|---|---|---|
| Kittitas County, WA | # 16 | 9 | 1.2 TWh |
| Clark County, WA | # 17 | 2 | 812.4 GWh |
| Garfield County, WA | # 18 | 2 | 811.6 GWh |
| Lincoln County, WA | # 19 | 2 | 624.1 GWh |
| Spokane County, WA | # 20 | 7 | 560.0 GWh |
| Skamania County, WA | # 21 | 1 | 503.6 GWh |
| Adams County, WA | # 22 | 4 | 456.9 GWh |
| Thurston County, WA | # 23 | 4 | 454.8 GWh |
| King County, WA | # 24 | 12 | 392.2 GWh |
| Snohomish County, WA | # 25 | 9 | 359.3 GWh |
| Stevens County, WA | # 26 | 4 | 302.8 GWh |
| Mason County, WA | # 27 | 3 | 273.6 GWh |
| Yakima County, WA | # 28 | 12 | 269.1 GWh |
| Franklin County, WA | # 29 | 3 | 10.9 GWh |
| Jefferson County, WA | # 30 | 3 | 8.2 GWh |