Electric utilities in Washington
Every electric utility serving Washington in EIA data year 2025, with ownership type, grid operator, balancing authority, customers and the counties each one serves.
Retail utilities643 investor-owned, 18 co-ops, 17 municipal
All entities70Including marketers and other filers
Counties covered39With at least one utility listed
Retail customers3,491,136Sum of utility customer counts
Retail electric utilities in Washington
Sorted by customers. See Washington on the map, and the state regulator, Washington Utilities & Transportation Commission.
| Utility | EIA ID | Type | ISO or region | Balancing authority | Customers | Counties served |
|---|---|---|---|---|---|---|
| Puget Sound Energy IncPuget Sound Energy | 15500 | Investor-owned | West (no ISO) | PSEI | 1,149,781 | 8 Island, King, Kitsap, Kittitas, Pierce, Skagit, Thurston, Whatcom |
| City of Seattle - (WA)Seattle City Light | 16868 | Municipal | West (no ISO) | SCL | 461,523 | 1 King |
| PUD 1 of Snohomish CountySnohomish County PUD | 17470 | Public power district | West (no ISO) | BPAT | 350,467 | 2 Island, Snohomish |
| Avista CorpAvista | 20169 | Investor-owned | West (no ISO) | AVA | 254,232 | 9 Adams, Asotin, Ferry, Grant, Lincoln, Pend Oreille, Spokane, Stevens, Whitman |
| PUD No 1 of Clark County - (WA) | 3660 | Public power district | West (no ISO) | BPAT | 208,717 | 1 Clark |
| City of Tacoma - (WA)Tacoma Power | 18429 | Municipal | West (no ISO) | TPWR | 177,725 | 4 King, Lewis, Mason, Pierce |
| PacifiCorpPacifiCorp (Rocky Mountain Power UT/WY/ID; Pacific Power OR/WA/CA) | 14354 | Investor-owned | West (no ISO) | PACW | 131,453 | 6 Benton, Columbia, Cowlitz, Garfield, Walla Walla, Yakima |
| PUD No 1 of Benton County | 1579 | Public power district | West (no ISO) | BPAT | 53,744 | 1 Benton |
| PUD No 1 of Cowlitz County | 4442 | Public power district | West (no ISO) | BPAT | 50,751 | 1 Cowlitz |
| PUD No 2 of Grant County | 14624 | Public power district | West (no ISO) | GCPD | 50,688 | 5 Adams, Douglas, Grant, Kittitas, Lincoln |
| PUD No 1 of Chelan County | 3413 | Public power district | West (no ISO) | CHPD | 50,456 | 4 Chelan, King, Kittitas, Okanogan |
| PUD No 1 of Grays Harbor County | 7548 | Public power district | West (no ISO) | BPAT | 42,953 | 5 Grays Harbor, Jefferson, Lewis, Pacific, Thurston |
| Inland Power & Light Company | 8699 | Cooperative | West (no ISO) | BPAT | 39,875 | 10 Adams, Asotin, Columbia, Franklin, Garfield, Lincoln, Spokane, Stevens, Walla Walla, Whitman |
| PUD No 3 of Mason County | 15419 | Public power district | West (no ISO) | BPAT | 33,841 | 4 Grays Harbor, Kitsap, Mason, Pierce |
| Peninsula Light Company | 14668 | Cooperative | West (no ISO) | BPAT | 33,335 | 2 Kitsap, Pierce |
| PUD No 1 of Lewis County | 10944 | Public power district | West (no ISO) | BPAT | 32,385 | 6 Cowlitz, Grays Harbor, Lewis, Pacific, Pierce, Thurston |
| PUD No 1 of Clallam County | 3644 | Public power district | West (no ISO) | BPAT | 31,905 | 2 Clallam, Jefferson |
| PUD No 1 of Franklin County | 6716 | Public power district | West (no ISO) | BPAT | 27,180 | 1 Franklin |
| City of Richland - (WA) | 15979 | Municipal | West (no ISO) | BPAT | 24,527 | 1 Benton |
| PUD No 1 of Okanogan County | 14055 | Public power district | West (no ISO) | DOPD | 21,114 | 1 Okanogan |
| PUD No 1 of Jefferson County | 59013 | Public power district | West (no ISO) | BPAT | 19,877 | 1 Jefferson |
| PUD No 2 of Pacific County | 14324 | Public power district | West (no ISO) | BPAT | 17,496 | 3 Grays Harbor, Pacific, Wahkiakum |
| PUD No 1 of Douglas County | 5326 | Public power district | West (no ISO) | DOPD | 15,755 | 1 Douglas |
| Elmhurst Mutual Power & Light Co | 5832 | Cooperative | West (no ISO) | BPAT | 15,462 | 1 Pierce |
| Orcas Power & Light Coop | 14170 | Cooperative | West (no ISO) | BPAT | 15,082 | 1 San Juan |
| Benton Rural Electric Assn | 1625 | Cooperative | West (no ISO) | BPAT | 14,424 | 3 Benton, Lewis, Yakima |
| PUD No 1 of Klickitat County | 10393 | Public power district | West (no ISO) | BPAT | 12,710 | 4 Benton, Klickitat, Skamania, Yakima |
| Vera Irrigation District #15 | 19784 | Public power district | West (no ISO) | BPAT | 11,897 | 1 Spokane |
| City of Port Angeles - (WA) | 15231 | Municipal | West (no ISO) | BPAT | 10,971 | 1 Clallam |
| City of Centralia - (WA) | 3295 | Municipal | West (no ISO) | BPAT | 10,282 | 1 Lewis |
| Lakeview Light & Power | 10627 | Cooperative | West (no ISO) | BPAT | 10,097 | 1 Pierce |
| Modern Electric Water Company | 12744 | Cooperative | West (no ISO) | AVA | 10,020 | 1 Spokane |
| City of Ellensburg - (WA) | 6149 | Municipal | West (no ISO) | BPAT | 9,774 | 1 Kittitas |
| Big Bend Electric Coop, Inc | 1723 | Cooperative | West (no ISO) | BPAT | 9,349 | 5 Adams, Franklin, Grant, Lincoln, Whitman |
| PUD No 1 of Pend Oreille County | 14653 | Public power district | West (no ISO) | AVA | 9,310 | 1 Pend Oreille |
| PUD No 1 of Skamania Co | 17279 | Public power district | West (no ISO) | BPAT | 6,101 | 1 Skamania |
| Columbia Rural Elec Assn, Inc | 4041 | Cooperative | West (no ISO) | BPAT | 5,833 | 2 Columbia, Walla Walla |
| City of Cheney - (WA) | 3420 | Municipal | West (no ISO) | AVA | 5,676 | 1 Spokane |
| PUD No 1 of Mason County | 22355 | Public power district | West (no ISO) | BPAT | 5,293 | 2 Jefferson, Mason |
| Tanner Electric Coop | 18448 | Cooperative | West (no ISO) | PSEI | 4,911 | 3 King, Pierce, Thurston |
| Parkland Light & Water Company | 14505 | Cooperative | West (no ISO) | BPAT | 4,566 | 1 Pierce |
| PUD No 1 of Kittitas County | 10326 | Public power district | West (no ISO) | BPAT | 4,485 | 1 Kittitas |
| Ohop Mutual Light Company, Inc | 14012 | Cooperative | West (no ISO) | BPAT | 4,413 | 1 Pierce |
| Okanogan County Elec Coop, Inc | 14074 | Cooperative | West (no ISO) | BPAT | 3,574 | 1 Okanogan |
| City of Milton - (WA) | 12616 | Municipal | West (no ISO) | BPAT | 3,512 | 2 King, Pierce |
| PUD No 1 of Ferry County | 6297 | Public power district | West (no ISO) | BPAT | 3,507 | 2 Ferry, Okanogan |
| City of Blaine - (WA) | 1818 | Municipal | West (no ISO) | PSEI | 3,395 | 1 Whatcom |
| Town of Steilacoom | 18051 | Municipal | West (no ISO) | BPAT | 2,963 | 1 Pierce |
| Yakama PowerNew since 2018 | 56621 | Cooperative | West (no ISO) | BPAT | 2,904 | 2 Klickitat, Yakima |
| PUD No 1 of Wahkiakum County | 15327 | Public power district | West (no ISO) | BPAT | 2,539 | 1 Wahkiakum |
| Nespelem Valley Elec Coop, Inc | 13387 | Cooperative | West (no ISO) | BPAT | 1,524 | 3 Douglas, Ferry, Okanogan |
| City of Chewelah | 3459 | Municipal | West (no ISO) | AVA | 1,293 | 1 Stevens |
| Town of Eatonville - (WA) | 5631 | Municipal | West (no ISO) | BPAT | 1,231 | 1 Pierce |
| City of McCleary - (WA) | 11965 | Municipal | West (no ISO) | BPAT | 1,119 | 1 Grays Harbor |
| Clearwater Power Company | 3739 | Cooperative | West (no ISO) | AVA | 990 | 3 Asotin, Garfield, Whitman |
| City of Sumas - (WA) | 18282 | Municipal | West (no ISO) | PSEI | 900 | 1 Whatcom |
| City of Coulee Dam - (WA) | 4414 | Municipal | West (no ISO) | BPAT | 597 | 3 Douglas, Grant, Okanogan |
| Town of Ruston - (WA) | 16462 | Municipal | West (no ISO) | TPWR | 547 | 1 Pierce |
| Kootenai Electric Cooperative | 10454 | Cooperative | West (no ISO) | AVA | 76 | 1 Spokane |
| Northern Lights, Inc | 13758 | Cooperative | West (no ISO) | BPAT | 15 | 1 Pend Oreille |
| Bonneville Power Administration | 1738 | Federal | West (no ISO) | BPAT | 10 | 30 Adams, Benton, Chelan, Clallam, Clark, Cowlitz, Douglas, Ferry, Franklin, Grant, Grays Harbor, Jefferson, King, Kitsap, Kittitas, Klickitat, Lewis, Lincoln, Okanogan, Pacific, Pend Oreille, Pierce, Skagit, Snohomish, Spokane, Stevens, Thurston, Walla Walla, Whatcom, Yakima |
| PUD No 1 of Asotin County | 14771 | Municipal | West (no ISO) | BPAT | 3 | 1 Asotin |
| PUD No 1 of Whatcom County | 40456 | Public power district | West (no ISO) | BPAT | 1 | 1 Whatcom |
| Energy Northwest | 20160 | State authority | West (no ISO) | — | — | 0 — |
Which utilities serve each county in Washington
Retail power marketers and other entities in Washington
Competitive suppliers, wholesale marketers, transmission-only companies and behind-the-meter providers that report to EIA for Washington. They have no county service territory of their own.
| Entity | EIA ID | Type | ISO or region | Customers |
|---|---|---|---|---|
| SolarCity Corporation | 57313 | Behind-the-meter provider | West (no ISO) | 102 |
| Shell Energy North America (US), L.P. | 4410 | Retail power marketer | West (no ISO) | 4 |
| BP Energy Company | 540 | Retail power marketer | West (no ISO) | 2 |
| Avangrid Renewables | 14349 | Retail power marketer | West (no ISO) | 1 |
| Calpine Energy Solutions, LLC | 16840 | Retail power marketer | West (no ISO) | 1 |
| TransAlta Energy Marketing (U.S.) Inc. | 19096 | Wholesale marketer | West (no ISO) | — |
About this data
Which utilities exist comes from the U.S. Energy Information Administration’s Form EIA-861 and EIA-861S, data year 2025 (final release, October 7, 2026), read directly from eia.gov. County service territories, balancing authority codes and customer counts come from EIA-861 for 2018, the latest year compiled at county level for this directory; utilities that started reporting after 2018 carry their 2025 values. County boundaries are U.S. Census cartographic boundaries (us-atlas 3.0, Albers USA projection).
Customer counts are per utility within Washington. A county’s grid operator is the one serving most of its customers, estimated by spreading each utility’s customers evenly over its counties. Download every state in one file from the U.S. Electric Utility Directory.
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