List of public utilities in Washington
| Provider | Counties Served | Utility Type |
|---|---|---|
| Northwest Natural Gas | Natural Gas | |
| Town of Ruston | Pierce | Electric |
| City of Coulee Dam | Douglas, Grant, Okanogan | Electric |
| Kootenai Electric Cooperative | Spokane | Electric |
| Northern Lights | Electric | |
| Yakama Power | Electric | |
| Kalispel Tribal Utilities | Electric | |
| Cascade Natural Gas | Acme, Grays Harbor, Yakima, Kitsap, Whatcom, Walla Walla, Skagit, Island, Snohomish, Cowlitz | Natural Gas |
| Town of Steilacoom | Pierce | Electric |
| City of Milton | Pierce, King | Electric |
| City of Blaine | Whatcom | Electric |
| Ferry County PUD | Ferry | Electric |
| Okanogan County Electric Co-op | Okanogan | Electric |
| Columbia Rural Elec Association | Walla Walla | Electric |
| Wahkiakum County PUD | Wahkiakum | Electric |
| Nespelem Valley Electric Co-op | Okanogan | Electric |
| Clearwater Power Company | Asotin, Garfield, Whitman | Electric |
| City of Sumas | Whatcom | Electric |
| City of McCleary | Grays Harbor | Electric |
| Town of Eatonville | Pierce | Electric |
| City of Chewelah | Stevens | Electric |
| Modern Electric Water Company | Spokane | Electric |
| Lakeview Light & Power | Pierce | Electric |
| Skamania Co PUD | Skamania | Electric |
| City of Cheney | Spokane | Electric |
| Big Bend Electric Cooperative | Electric | |
| Tanner Electric Cooperative | King, Pierce | Electric |
| Ohop Mutual Light Company, Inc | Electric | |
| Parkland Light & Water Company | Pierce | Electric |
| City of Ellensburg | Kittitas | Electric, Natural Gas |
| City of Centralia | Lewis | Electric |
| Pend Oreille PUD | Pend Oreille | Electric |
| City of Port Angeles | Clallam | Electric |
| Kittitas County PUD | Kittitas | Electric |
| Klickitat County PUD | Klickitat | Electric |
| Vera Water and Power | Spokane | Electric |
| Benton Rural Electric Association | Benton | Electric |
| Elmhurst Mutual Power & Light Co | Pierce | Electric |
| Orcas Power & Light Co-op (OPALCO) | San Juan | Electric |
| Pacific County PUD No. 2 | Pacific | Electric |
| Douglas County PUD | Douglas | Electric |
| Okanogan County PUD | Okanogan | Electric |
| Jefferson County PUD | Jefferson | Electric |
| City of Richland | Benton | Electric |
| Franklin PUD | Franklin | Electric |
| Lewis County PUD | Lewis | Electric |
| Peninsula Light Company | Pierce | Electric |
| Mason County PUD No. 3 | Mason | Electric |
| Clallam County PUD | Clallam | Electric |
| Grays Harbor PUD | Grays Harbor | Electric |
| Inland Power & Light Company | Electric | |
| Chelan County PUD | Chelan | Electric |
| Grant County PUD | Grant | Electric |
| Benton PUD | Benton | Electric |
| Cowlitz County PUD | Cowlitz | Electric |
| PacifiCorp | Electric | |
| Tacoma Public Utilities | Pierce | Electric |
| Clark Public Utilities | Clark | Electric |
| Avista Corp | Spokane, Grant, Franklin, Whitman, Adams, Ferry, Lincoln, Pend Oreille, Stevens | Electric, Natural Gas |
| Snohomish County PUD | Snohomish | Electric |
| Seattle City Light | Seattle | Electric |
| Puget Sound Energy | Island, King, Kitsap, Kittitas, Lewis, Pierce, Skagit, Snohomish, Thurston, Whatcom | Electric, Natural Gas |