- Alcoa Inc.
- Avista
- Benton PUD
- Benton Rural Electric Association
- Blachly-Lane Electric Cooperative
- Canby Utility Board
- Central Electric Cooperative, Inc.
- Centralia City Light
- Central Lincoln PUD
- Chelan County PUD
- City of Bonners Ferry
- City of Cheney
- Clark Public Utilities
- Clatskanie People’s Utility
- Clearwater Power Company
- Columbia River PUD
- Columbia Rural Electric
- Consumers Power Inc.
- Coos-Curry Electric Cooperative
- Cowlitz PUD
- Douglas County PUD
- Douglas Electric Cooperative
- Emerald PUD
- Eugene Water and Electric Board
- Fall River Rural Electric Cooperative
- Ferry County PUD
- Flathead Electric Cooperative
- Franklin PUD
- Glacier Electric Cooperative
- Grand Coulee Project Hydroelectric Authority
- Grant County PUD
- Grays Harbor PUD
- Harney Electric Cooperative
- Idaho Consumer-Owned Utilities Association ICUA represents twenty-two of Idaho’s rural electric cooperatives and municipalities that provide electrical services in the state of Idaho
- Idaho County Light & Power Cooperative
- Idaho Falls Power
- Industrial Customers of Northwest Utilities (ICNU)
- Inland Power and Light Company
- Kootenai Electric Cooperative
- Lewis County PUD
- Lane Electric Cooperative
- Lincoln Electric Cooperative
- Lost River Electric
- Lower Valley Energy
- Mason County PUD #1
- Mason County PUD #3
- McMinnville Water and Light
- Midstate Electric
- Missoula Electric Cooperative
- Monmouth Power & Light
- Nevada Rural Electric Association
- Northern Lights, Inc.
- Northern Wasco County PUD
- Northwest Requirements Utilities NRU has 52 member utilities located in 7 states served by the Bonneville Power Administration
- Okanogan County Electric Cooperative
- Okanogan County PUD
- Orcas Power & Light Cooperative
- Oregon Municipal Electric Utilities Association
- Oregon Rural Electric Cooperative Association
- Pacific County PUD#2
- Pacific Northwest Utilities Conference Committee PNUCC is a voluntary, informal organization of public and private utilities to assess regional power supply in the West Group Forecast and to support federal appropriations for power projects in the region.
- Pacific Northwest Waterways Association
- Pend Oreille County PUD #1
- Peninsula Light Company
- PNGC Power PNGC Power is a Portland-based electric generation and transmission cooperative owned by 14 Northwest electric distribution cooperative utilities with service territory in seven western states
- Portland General Electric
- Public Generating Pool PGP is composed of ten consumer-owned electric utilities, nine in Washington and one in Oregon
- Public Power Council PPC represents many consumer-owned utilities (municipal, PUD, and rural electric cooperatives) ranging in size from 10 to over 375,000 customers
- Puget Sound Energy
- Raft River Electric Cooperative
- Ravalli County Electric Cooperative
- Richland Energy Services
- Salem Electric
- Salmon River Electric
- Seattle City Light
- Snohomish County PUD
- Springfield Utility Board
- Tacoma Power
- Tillamook PUD
- Umatilla Electric Cooperative
- United Electric Co-op, Inc.
- Vigilante Electric Cooperative
- Washington Public Utility Districts Association WPUDA represents 26 nonprofit, community-owned utilities that provide electricity, water and wastewater services, and wholesale telecommunications to more than 1.7 million people in Washington.
- Washington Rural Electric Cooperative Association
- Wells Rural Electric
- Western Montana Generating & Transmission Cooperative WMG&T provides power planning and representation for five rural cooperatives and one tribal utility in Montana
- West Oregon Electric Cooperative