Advanced Power Alliance
American Clean Power Association
Arizona Public Service
Basin Electric Power Cooperative
Black Hills Corporation
Bonneville Power Administration
Chelan County Public Utility District
Cheyenne Light Fuel & power
Clatskanie PUD

Clean Energy Buyers Association
Colorado Energy Office
CORE Electric
EDP Renewables
Grant County Public Utility District
Idaho Power
Interwest Energy Alliance
Leeward Energy
Lewis PUD
Natural Resources Defense Council

Northwest & Intermountain Power Producers Coalition (NIPPC)
Northwest Requirements Utilities (NRU)
NW Energy Coalition
Pattern Energy
Powerex Corp
Public Generating Pool
Public Power Council
Puget Sound Energy
Renewable Northwest
Salt River Project

Shell
Snohomish County Public Utilities
Tacoma Power
The Energy Authority
Tri-State Generation and Transmission Association
Tucson Electric Power
Voltus
Western Energy Freedom Action
Western Power Trading Forum
Western Resource Advocates (WRA)
Xcel/Public Service Company of Colorado