Directory of Power Plants in Washington
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Ferndale Generating Station | Puget Sound Energy Inc | Ferndale, WA | Puget Sound Energy, Inc. (PSEI) | 584.8 GWh | Mar 1994 | Jun 2026 | 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 |
| Encogen | Puget Sound Energy Inc | Bellingham, WA | Puget Sound Energy, Inc. (PSEI) | 195.7 GWh | Feb 1993 | Jun 2026 | Natural Gas |
| Snoqualmie 2 | Puget Sound Energy Inc | Snoqualmie, WA | Puget Sound Energy, Inc. (PSEI) | 106.8 GWh | Dec 1956 | Dec 2025 | Water |
| Hopkins Ridge Wind | Puget Sound Energy Inc | Dayton, WA | Bonneville Power Administration (BPAT) | 359.6 GWh | Oct 2005 | Jun 2026 | Wind |
| Nooksack Hydro | Puget Sound Hydro LLC | Glacier, WA | Puget Sound Energy, Inc. (PSEI) | 20.2 GWh | Oct 1906 | Dec 2025 | Water |
| Rattlesnake Flat | Rattlesnake Flat, LLC | Ritzville, WA | Avista Corporation (AVA) | 401.6 GWh | Nov 2020 | Jun 2026 | Wind |
| Rocky Brook Hydroelectric | Rocky Brook Electric Inc | Brinnon, WA | Bonneville Power Administration (BPAT) | 464.0 MWh | Nov 1985 | May 2025 | Water |
| Sagebrush Power Partners | Sagebrush Power Partners, LLC | Ellensburg, WA | Bonneville Power Administration (BPAT) | 277.0 GWh | Oct 2010 | Dec 2025 | Wind |
| Sheep Creek Hydro | Sheep Creek Hydro Inc | Northport, WA | Avista Corporation (AVA) | 6.8 GWh | May 1986 | Dec 2025 | Water |
| Sierra Pacific Aberdeen | Sierra Pacific Industries | Aberdeen, WA | Bonneville Power Administration (BPAT) | 91.4 GWh | Feb 2003 | Dec 2025 | Wood/Wood Waste Solids |
| Sierra Pacific Burlington Facility | Sierra Pacific Industries | Mt Vernon, WA | Puget Sound Energy, Inc. (PSEI) | 160.2 GWh | Feb 2007 | Dec 2025 | Wood/Wood Waste Solids |
| Skookumchuck Wind Facility | Southern Power Co | Rainier, WA | Puget Sound Energy, Inc. (PSEI) | 420.8 GWh | Oct 2020 | Jun 2026 | Wind |
| Adams Nielson Solar | Strata Manager, LLC | Lind, WA | Avista Corporation (AVA) | 40.9 GWh | Oct 2018 | Jun 2026 | Solar |
| Transalta Centralia Generation | TransAlta Centralia Gen LLC | Centralia, WA | Bonneville Power Administration (BPAT) | 3.2 TWh | Nov 1972 | Dec 2025 | Subbituminous Coal : 99.7% |
| Skookumchuck | TransAlta Centralia Gen LLC | Tenino, WA | Bonneville Power Administration (BPAT) | 1.8 GWh | Aug 1990 | Apr 2025 | Water |
| Grand Coulee | U S Bureau of Reclamation | Grand Coulee, WA | Bonneville Power Administration (BPAT) | 18.9 TWh | Feb 1941 | Jun 2026 | Water |
| Chandler | U S Bureau of Reclamation | Benton City, WA | Bonneville Power Administration (BPAT) | 30.6 GWh | Jan 1956 | Nov 2025 | Water |
| Roza | U S Bureau of Reclamation | Yakima, WA | Bonneville Power Administration (BPAT) | 38.2 GWh | Jul 1958 | Dec 2025 | Water |
| University of Washington Power Plant | University of Washington | Seattle, WA | Seattle City Light (SCL) | 127.4 MWh | Dec 1968 | Jun 2026 | Distillate Fuel Oil |
| Lower Monumental | USACE Northwestern Division | Kahlotus, WA | Bonneville Power Administration (BPAT) | 1.5 TWh | May 1969 | Jun 2026 | Water |
| Little Goose | USACE Northwestern Division | Dayton, WA | Bonneville Power Administration (BPAT) | 1.6 TWh | Mar 1970 | Jun 2026 | Water |
| Ice Harbor | USACE Northwestern Division | Burbank, WA | Bonneville Power Administration (BPAT) | 1.5 TWh | Dec 1961 | Jun 2026 | Water |
| Lower Granite | USACE Northwestern Division | Pomeroy, WA | Bonneville Power Administration (BPAT) | 1.5 TWh | Mar 1975 | Jun 2026 | Water |
| Chief Joseph | USACE Northwestern Division | Bridgeport, WA | Bonneville Power Administration (BPAT) | 11.7 TWh | Aug 1955 | Jun 2026 | Water |
| 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% |
| Washington Wind | Washington Wind LLC | Goldendale, WA | Bonneville Power Administration (BPAT) | 379.0 GWh | Apr 2009 | Dec 2025 | Wind |
| White Creek Wind Farm | White Creek Wind 1 LLC | Roosevelt, WA | Bonneville Power Administration (BPAT) | 536.0 GWh | Oct 2007 | Dec 2025 | Wind |
| Lilliwaup Falls Generating | William G. Reed Jr | Lilliwaup, WA | Bonneville Power Administration (BPAT) | 5.3 GWh | Apr 1986 | Dec 2025 | Water |
| Windy Flats Wind Project | Windy Flats Partners LLC | Centerville, WA | Bonneville Power Administration (BPAT) | 650.9 GWh | Sep 2009 | Dec 2025 | Wind |
| Orchard Avenue 1 | Yakima-Tieton Irrigation Dist | Yakima, WA | PacifiCorp West (PACW) | 2.9 GWh | Feb 1987 | Oct 2025 | Water |
| Cowiche | Yakima-Tieton Irrigation Dist | Tieton, WA | PacifiCorp West (PACW) | 3.4 GWh | Feb 1987 | Oct 2025 | 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 |