Directory of Power Plants in Washington
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Swift 1 | PacifiCorp | Cougar, WA | PacifiCorp West (PACW) | 480.0 GWh | Nov 1958 | Feb 2025 | Water |
| Yale | PacifiCorp | Amboy, WA | PacifiCorp West (PACW) | 516.9 GWh | Aug 1953 | Dec 2023 | Water |
| Mayfield | City of Tacoma - (WA) | Silver Creek, WA | City of Tacoma, Department of Public Utilities, Light Division (TPWR) | 545.0 GWh | Feb 1963 | Dec 2023 | Water |
| Diablo | City of Seattle - (WA) | Rockport, WA | Seattle City Light (SCL) | 548.9 GWh | Sep 1936 | Dec 2023 | Water |
| Marengo Wind Plant | PacifiCorp | Dayton, WA | PacifiCorp West (PACW) | 560.6 GWh | Jul 2007 | Dec 2023 | Wind |
| Windy Flats Wind Project | Windy Flats Partners LLC | Centerville, WA | Bonneville Power Administration (BPAT) | 567.8 GWh | Sep 2009 | Dec 2023 | Wind |
| Encogen | Puget Sound Energy Inc | Bellingham, WA | Puget Sound Energy, Inc. (PSEI) | 604.4 GWh | Feb 1993 | Feb 2025 | Natural Gas |
| Wild Horse | Puget Sound Energy Inc | Ellensburg, WA | Puget Sound Energy, Inc. (PSEI) | 617.2 GWh | Nov 2006 | Feb 2025 | Wind : 99.9% |
| Tucannon River Wind Farm | Portland General Electric Co | Dayton, WA | Portland General Electric Company (PGE) | 678.5 GWh | Nov 2014 | Dec 2023 | Wind |
| Gorge | City of Seattle - (WA) | Rockport, WA | Seattle City Light (SCL) | 708.8 GWh | Aug 1924 | Feb 2025 | Water |
| Mossyrock | City of Tacoma - (WA) | Silver Creek, WA | City of Tacoma, Department of Public Utilities, Light Division (TPWR) | 795.4 GWh | Sep 1968 | Feb 2025 | Water |
| Lower Snake River Wind Energy Project | Puget Sound Energy Inc | Pomeroy, WA | Bonneville Power Administration (BPAT) | 825.2 GWh | Jan 2012 | Feb 2025 | Wind |
| Sumas Power Plant | Puget Sound Energy Inc | Sumas, WA | Puget Sound Energy, Inc. (PSEI) | 834.9 GWh | Feb 1993 | Dec 2023 | Natural Gas |
| HF Sinclair Puget Sound Refining | HF Sinclair Corporation | Anacortes, WA | Puget Sound Energy, Inc. (PSEI) | 997.9 GWh | Aug 1991 | Feb 2025 | Natural Gas : 77.3% Other Gas : 22.7% |
| Lower Monumental | USACE Northwestern Division | Kahlotus, WA | Bonneville Power Administration (BPAT) | 1.3 TWh | May 1969 | Feb 2025 | Water |
| Lower Granite | USACE Northwestern Division | Pomeroy, WA | Bonneville Power Administration (BPAT) | 1.3 TWh | Mar 1975 | Feb 2025 | Water |
| Ice Harbor | USACE Northwestern Division | Burbank, WA | Bonneville Power Administration (BPAT) | 1.4 TWh | Dec 1961 | Feb 2025 | Water |
| Little Goose | USACE Northwestern Division | Dayton, WA | Bonneville Power Administration (BPAT) | 1.4 TWh | Mar 1970 | Feb 2025 | Water |
| River Road Gen Plant | PUD No 1 of Clark County - (WA) | Vancouver, WA | Bonneville Power Administration (BPAT) | 1.6 TWh | Nov 1997 | Feb 2025 | Natural Gas |
| Ferndale Generating Station | Puget Sound Energy Inc | Ferndale, WA | Puget Sound Energy, Inc. (PSEI) | 1.7 TWh | Mar 1994 | Feb 2025 | Natural Gas |
| Frederickson Power LP | Frederickson Power LP | Tacoma, WA | Bonneville Power Administration (BPAT) | 1.8 TWh | Jul 2002 | Dec 2023 | Natural Gas |
| Mint Farm Generating Station | Puget Sound Energy Inc | Longview, WA | Puget Sound Energy, Inc. (PSEI) | 2.0 TWh | Dec 2007 | Dec 2023 | Natural Gas |
| Rock Island | PUD No 1 of Chelan County | Wenatchee, WA | Public Utility District No. 1 of Chelan County (CHPD) | 2.1 TWh | Sep 1931 | Feb 2025 | Water |
| Goldendale Generating Station | Puget Sound Energy Inc | Goldendale, WA | Puget Sound Energy, Inc. (PSEI) | 2.2 TWh | Jul 2004 | Dec 2023 | Natural Gas |
| Chehalis Generating Facility | PacifiCorp | Chehalis, WA | Bonneville Power Administration (BPAT) | 2.6 TWh | Jul 2003 | Feb 2025 | Natural Gas |
| Grays Harbor Energy Facility | Invenergy Services LLC | Elma, WA | Bonneville Power Administration (BPAT) | 2.9 TWh | Apr 2008 | Feb 2025 | Natural Gas |
| Boundary | City of Seattle - (WA) | Metaline, WA | Seattle City Light (SCL) | 2.9 TWh | Jul 1967 | Feb 2025 | Water |
| Transalta Centralia Generation | TransAlta Centralia Gen LLC | Centralia, WA | Bonneville Power Administration (BPAT) | 3.0 TWh | Nov 1972 | Feb 2025 | Subbituminous Coal : 99.8% |
| Wells | PUD No 1 of Douglas County | Pateros, WA | PUD No. 1 of Douglas County (DOPD) | 3.6 TWh | Aug 1967 | Feb 2025 | Water |
| Priest Rapids | PUD No 2 of Grant County | Mattawa, WA | Bonneville Power Administration (BPAT) | 3.9 TWh | Sep 1959 | Feb 2025 | Water |
| Wanapum | PUD No 2 of Grant County | Beverly, WA | Public Utility District No. 2 of Grant County, Washington (GCPD) | 4.2 TWh | May 1963 | Feb 2025 | Water |
| Rocky Reach | PUD No 1 of Chelan County | Wenatchee, WA | Public Utility District No. 1 of Chelan County (CHPD) | 5.0 TWh | May 1961 | Feb 2025 | Water |
| Chief Joseph | USACE Northwestern Division | Bridgeport, WA | Bonneville Power Administration (BPAT) | 9.5 TWh | Aug 1955 | Feb 2025 | Water |
| Columbia Generating Station | Energy Northwest | Richland, WA | Bonneville Power Administration (BPAT) | 9.9 TWh | Nov 1984 | Feb 2025 | Nuclear |
| Grand Coulee | U S Bureau of Reclamation | Grand Coulee, WA | Bonneville Power Administration (BPAT) | 15.7 TWh | Feb 1941 | Feb 2025 | Water |
Browse Power Plants By Washington Counties
Figures are based on October 2023 generation numbers.| County | State Rank | Active Plants | Oct 2023 Generation |
|---|---|---|---|
| Franklin County, WA | # 31 | 3 | 17.2 GWh |
| Jefferson County, WA | # 30 | 2 | 35.5 GWh |
| Clallam County, WA | # 29 | 3 | 36.2 GWh |
| Yakima County, WA | # 28 | 12 | 120.4 GWh |
| Mason County, WA | # 27 | 3 | 290.0 GWh |
| Snohomish County, WA | # 26 | 9 | 329.5 GWh |
| King County, WA | # 25 | 12 | 330.0 GWh |
| Stevens County, WA | # 24 | 4 | 350.4 GWh |
| Thurston County, WA | # 23 | 3 | 428.3 GWh |
| Adams County, WA | # 22 | 4 | 454.9 GWh |
| Skamania County, WA | # 21 | 1 | 480.0 GWh |
| Spokane County, WA | # 20 | 7 | 494.9 GWh |
| Lincoln County, WA | # 19 | 2 | 588.8 GWh |
| Garfield County, WA | # 18 | 1 | 825.2 GWh |
| Kittitas County, WA | # 17 | 9 | 1.1 TWh |
| Clark County, WA | # 16 | 2 | 1.6 TWh |
| County | State Rank | Active Plants | Oct 2023 Generation |
|---|---|---|---|
| Whitman County, WA | # 15 | 6 | 1.6 TWh |
| Skagit County, WA | # 14 | 4 | 1.7 TWh |
| Pierce County, WA | # 13 | 13 | 2.7 TWh |
| Walla Walla County, WA | # 12 | 4 | 3.0 TWh |
| Grays Harbor County, WA | # 11 | 6 | 3.1 TWh |
| Columbia County, WA | # 10 | 4 | 3.1 TWh |
| Pend Oreille County, WA | # 9 | 3 | 3.3 TWh |
| Cowlitz County, WA | # 8 | 6 | 3.4 TWh |
| Klickitat County, WA | # 7 | 16 | 5.3 TWh |
| Whatcom County, WA | # 6 | 13 | 5.6 TWh |
| Lewis County, WA | # 5 | 8 | 7.2 TWh |
| Chelan County, WA | # 4 | 4 | 7.4 TWh |
| Benton County, WA | # 3 | 6 | 10.2 TWh |
| Douglas County, WA | # 2 | 2 | 13.1 TWh |
| Grant County, WA | # 1 | 8 | 24.5 TWh |