Directory of Power Plants in Washington
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Lower Granite | USACE Northwestern Division | Pomeroy, WA | Bonneville Power Administration (BPAT) | 1.5 TWh | Mar 1975 | Jun 2026 | Water |
| Lower Snake River Wind Energy Project | Puget Sound Energy Inc | Pomeroy, WA | Bonneville Power Administration (BPAT) | 811.6 GWh | Jan 2012 | Jun 2026 | Wind |
| Longview Fibre | Longview Fibre Co | Longview, WA | Bonneville Power Administration (BPAT) | 248.5 GWh | Dec 1948 | Dec 2025 | Black Liquor : 62.6% Natural Gas : 20.0% Wood/Wood Waste Solids : 17.4% |
| Lilliwaup Falls Generating | William G. Reed Jr | Lilliwaup, WA | Bonneville Power Administration (BPAT) | 5.3 GWh | Apr 1986 | Dec 2025 | Water |
| LaGrande | City of Tacoma - (WA) | La Grande, WA | City of Tacoma, Department of Public Utilities, Light Division (TPWR) | 291.2 GWh | Oct 1912 | Dec 2025 | Water |
| Lower Monumental | USACE Northwestern Division | Kahlotus, WA | Bonneville Power Administration (BPAT) | 1.5 TWh | May 1969 | Jun 2026 | Water |
| LRI LFGTE Facility | Frontier Operation Services | Graham, WA | Puget Sound Energy, Inc. (PSEI) | 33.2 GWh | Oct 2013 | Dec 2025 | Landfill Gas |
| Linden Wind Energy Project | Los Angeles Department of Water & Power | Goldendale, WA | Bonneville Power Administration (BPAT) | 104.3 GWh | May 2010 | Dec 2025 | Wind |
| Little Falls (WA) | Avista Corp | Ford, WA | Avista Corporation (AVA) | 188.8 GWh | Jun 1910 | Dec 2025 | Water |
| Long Lake | Avista Corp | Ford, WA | Avista Corporation (AVA) | 435.4 GWh | Sep 1915 | Dec 2025 | Water |
| Little Goose | USACE Northwestern Division | Dayton, WA | Bonneville Power Administration (BPAT) | 1.6 TWh | Mar 1970 | Jun 2026 | Water |
| Lower Baker | Puget Sound Energy Inc | Concrete, WA | Puget Sound Energy, Inc. (PSEI) | 364.8 GWh | Feb 1960 | Dec 2025 | Water |
| Lund Hill Solar | Avangrid Power LLC | Bickleton, WA | Avangrid Renewables, LLC (AVRN) | 365.9 GWh | Sep 2022 | Jun 2026 | Solar |
Browse Power Plants By Washington Counties
Figures are based on December 2025 generation numbers.| County | State Rank | Active Plants | Dec 2025 Generation |
|---|---|---|---|
| Jefferson County, WA | # 30 | 3 | 8.2 GWh |
| Franklin County, WA | # 29 | 3 | 10.9 GWh |
| Yakima County, WA | # 28 | 12 | 269.1 GWh |
| Mason County, WA | # 27 | 3 | 273.6 GWh |
| Stevens County, WA | # 26 | 4 | 302.8 GWh |
| Snohomish County, WA | # 25 | 9 | 359.3 GWh |
| King County, WA | # 24 | 12 | 392.2 GWh |
| Thurston County, WA | # 23 | 4 | 454.8 GWh |
| Adams County, WA | # 22 | 4 | 456.9 GWh |
| Skamania County, WA | # 21 | 1 | 503.6 GWh |
| Spokane County, WA | # 20 | 7 | 560.0 GWh |
| Lincoln County, WA | # 19 | 2 | 624.1 GWh |
| Garfield County, WA | # 18 | 2 | 811.6 GWh |
| Clark County, WA | # 17 | 2 | 812.4 GWh |
| Kittitas County, WA | # 16 | 9 | 1.2 TWh |
| County | State Rank | Active Plants | Dec 2025 Generation |
|---|---|---|---|
| Skagit County, WA | # 15 | 4 | 1.5 TWh |
| Whitman County, WA | # 14 | 6 | 1.8 TWh |
| Pierce County, WA | # 13 | 14 | 2.1 TWh |
| Grays Harbor County, WA | # 12 | 6 | 2.1 TWh |
| Walla Walla County, WA | # 11 | 4 | 3.2 TWh |
| Columbia County, WA | # 10 | 4 | 3.3 TWh |
| Cowlitz County, WA | # 9 | 6 | 3.7 TWh |
| Whatcom County, WA | # 8 | 13 | 4.1 TWh |
| Pend Oreille County, WA | # 7 | 3 | 4.4 TWh |
| Klickitat County, WA | # 6 | 17 | 5.4 TWh |
| Lewis County, WA | # 5 | 8 | 7.3 TWh |
| Benton County, WA | # 4 | 7 | 10.1 TWh |
| Douglas County, WA | # 3 | 1 | 11.7 TWh |
| Chelan County, WA | # 2 | 6 | 13.6 TWh |
| Grant County, WA | # 1 | 9 | 29.8 TWh |