Directory of Power Plants in Washington
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| White Creek Wind Farm | White Creek Wind 1 LLC | Roosevelt, WA | Bonneville Power Administration (BPAT) | 563.7 GWh | Oct 2007 | Dec 2024 | Wind |
| Mayfield | City of Tacoma - (WA) | Silver Creek, WA | City of Tacoma, Department of Public Utilities, Light Division (TPWR) | 576.4 GWh | Feb 1963 | Dec 2024 | Water |
| Wild Horse | Puget Sound Energy Inc | Ellensburg, WA | Puget Sound Energy, Inc. (PSEI) | 599.8 GWh | Nov 2006 | Feb 2026 | Wind : 99.9% |
| Windy Flats Wind Project | Windy Flats Partners LLC | Centerville, WA | Bonneville Power Administration (BPAT) | 671.6 GWh | Sep 2009 | Dec 2024 | Wind |
| Ross | City of Seattle - (WA) | Rockport, WA | Seattle City Light (SCL) | 672.5 GWh | Nov 1952 | Feb 2026 | Water |
| Sumas Power Plant | Puget Sound Energy Inc | Sumas, WA | Puget Sound Energy, Inc. (PSEI) | 675.8 GWh | Feb 1993 | Dec 2024 | Natural Gas |
| Marengo Wind Plant | PacifiCorp | Dayton, WA | PacifiCorp West (PACW) | 692.7 GWh | Jul 2007 | Dec 2024 | Wind |
| Lower Snake River Wind Energy Project | Puget Sound Energy Inc | Pomeroy, WA | Bonneville Power Administration (BPAT) | 807.4 GWh | Jan 2012 | Feb 2026 | Wind |
| Tucannon River Wind Farm | Portland General Electric Co | Dayton, WA | Portland General Electric Company (PGE) | 808.3 GWh | Nov 2014 | Dec 2024 | Wind |
| Gorge | City of Seattle - (WA) | Rockport, WA | Seattle City Light (SCL) | 866.4 GWh | Aug 1924 | Feb 2026 | Water |
| HF Sinclair Puget Sound Refining | HF Sinclair Corporation | Anacortes, WA | Puget Sound Energy, Inc. (PSEI) | 910.1 GWh | Aug 1991 | Feb 2026 | Natural Gas : 73.0% Other Gas : 27.0% |
| Mossyrock | City of Tacoma - (WA) | Silver Creek, WA | City of Tacoma, Department of Public Utilities, Light Division (TPWR) | 934.2 GWh | Sep 1968 | Feb 2026 | Water |
| Ferndale Generating Station | Puget Sound Energy Inc | Ferndale, WA | Puget Sound Energy, Inc. (PSEI) | 996.2 GWh | Mar 1994 | Feb 2026 | Natural Gas |
| River Road Gen Plant | PUD No 1 of Clark County - (WA) | Vancouver, WA | Bonneville Power Administration (BPAT) | 1.3 TWh | Nov 1997 | Dec 2025 | Natural Gas |
| Lower Granite | USACE Northwestern Division | Pomeroy, WA | Bonneville Power Administration (BPAT) | 1.5 TWh | Mar 1975 | Feb 2026 | Water |
| Lower Monumental | USACE Northwestern Division | Kahlotus, WA | Bonneville Power Administration (BPAT) | 1.5 TWh | May 1969 | Feb 2026 | Water |
| Ice Harbor | USACE Northwestern Division | Burbank, WA | Bonneville Power Administration (BPAT) | 1.5 TWh | Dec 1961 | Feb 2026 | Water |
| Little Goose | USACE Northwestern Division | Dayton, WA | Bonneville Power Administration (BPAT) | 1.6 TWh | Mar 1970 | Feb 2026 | Water |
| Frederickson Power LP | Frederickson Power LP | Tacoma, WA | Bonneville Power Administration (BPAT) | 1.7 TWh | Jul 2002 | Dec 2024 | Natural Gas |
| Goldendale Generating Station | Puget Sound Energy Inc | Goldendale, WA | Puget Sound Energy, Inc. (PSEI) | 2.1 TWh | Jul 2004 | Dec 2024 | Natural Gas |
| Mint Farm Generating Station | Puget Sound Energy Inc | Longview, WA | Puget Sound Energy, Inc. (PSEI) | 2.3 TWh | Dec 2007 | Dec 2024 | Natural Gas |
| Chehalis Generating Facility | PacifiCorp | Chehalis, WA | Bonneville Power Administration (BPAT) | 2.3 TWh | Jul 2003 | Feb 2026 | Natural Gas |
| Rock Island | PUD No 1 of Chelan County | Wenatchee, WA | Public Utility District No. 1 of Chelan County (CHPD) | 2.4 TWh | Sep 1931 | Feb 2026 | Water |
| Transalta Centralia Generation | TransAlta Centralia Gen LLC | Centralia, WA | Bonneville Power Administration (BPAT) | 3.2 TWh | Nov 1972 | Dec 2025 | Subbituminous Coal : 99.7% |
| Grays Harbor Energy Facility | Invenergy Services LLC | Elma, WA | Bonneville Power Administration (BPAT) | 3.3 TWh | Apr 2008 | Jan 2026 | Natural Gas |
| Boundary | City of Seattle - (WA) | Metaline, WA | Seattle City Light (SCL) | 3.4 TWh | Jul 1967 | Feb 2026 | Water |
| Wells | PUD No 1 of Douglas County | Chelan, WA | PUD No. 1 of Douglas County (DOPD) | 4.0 TWh | Aug 1967 | Feb 2026 | Water |
| Priest Rapids | PUD No 2 of Grant County | Mattawa, WA | Bonneville Power Administration (BPAT) | 4.5 TWh | Sep 1959 | Feb 2026 | Water |
| Wanapum | PUD No 2 of Grant County | Beverly, WA | Public Utility District No. 2 of Grant County, Washington (GCPD) | 4.9 TWh | May 1963 | Feb 2026 | Water |
| Rocky Reach | PUD No 1 of Chelan County | Wenatchee, WA | Public Utility District No. 1 of Chelan County (CHPD) | 5.7 TWh | May 1961 | Feb 2026 | Water |
| Columbia Generating Station | Energy Northwest | Richland, WA | Bonneville Power Administration (BPAT) | 7.6 TWh | Nov 1984 | Feb 2026 | Nuclear |
| Chief Joseph | USACE Northwestern Division | Bridgeport, WA | Bonneville Power Administration (BPAT) | 10.7 TWh | Aug 1955 | Feb 2026 | Water |
| Grand Coulee | U S Bureau of Reclamation | Grand Coulee, WA | Bonneville Power Administration (BPAT) | 17.8 TWh | Feb 1941 | Feb 2026 | Water |
Browse Power Plants By Washington Counties
Figures are based on December 2024 generation numbers.| County | State Rank | Active Plants | Dec 2024 Generation |
|---|---|---|---|
| Jefferson County, WA | # 31 | 3 | 3.2 GWh |
| Franklin County, WA | # 30 | 3 | 12.8 GWh |
| Clallam County, WA | # 29 | 3 | 37.5 GWh |
| Yakima County, WA | # 28 | 12 | 247.7 GWh |
| Mason County, WA | # 27 | 3 | 304.6 GWh |
| Stevens County, WA | # 26 | 4 | 346.7 GWh |
| King County, WA | # 25 | 12 | 361.2 GWh |
| Snohomish County, WA | # 24 | 9 | 401.9 GWh |
| Thurston County, WA | # 23 | 4 | 443.0 GWh |
| Adams County, WA | # 22 | 4 | 477.1 GWh |
| Skamania County, WA | # 21 | 1 | 531.7 GWh |
| Spokane County, WA | # 20 | 7 | 556.8 GWh |
| Lincoln County, WA | # 19 | 2 | 641.5 GWh |
| Garfield County, WA | # 18 | 2 | 807.4 GWh |
| Kittitas County, WA | # 17 | 9 | 1.2 TWh |
| Clark County, WA | # 16 | 2 | 1.3 TWh |
| County | State Rank | Active Plants | Dec 2024 Generation |
|---|---|---|---|
| Skagit County, WA | # 15 | 4 | 1.5 TWh |
| Whitman County, WA | # 14 | 6 | 1.8 TWh |
| Pierce County, WA | # 13 | 14 | 2.3 TWh |
| Walla Walla County, WA | # 12 | 4 | 3.4 TWh |
| Grays Harbor County, WA | # 11 | 6 | 3.4 TWh |
| Columbia County, WA | # 10 | 4 | 3.5 TWh |
| Cowlitz County, WA | # 9 | 6 | 3.8 TWh |
| Pend Oreille County, WA | # 8 | 3 | 3.9 TWh |
| Whatcom County, WA | # 7 | 13 | 4.5 TWh |
| Klickitat County, WA | # 6 | 16 | 5.4 TWh |
| Lewis County, WA | # 5 | 8 | 7.3 TWh |
| Benton County, WA | # 4 | 7 | 7.9 TWh |
| Douglas County, WA | # 3 | 1 | 10.7 TWh |
| Chelan County, WA | # 2 | 6 | 12.5 TWh |
| Grant County, WA | # 1 | 9 | 27.8 TWh |