Our members have invested several billion dollars in building thermal and renewable power plants in Idaho, Oregon and Washington totaling over 4500 megawatts. IPPs working in the region have an equal amount of capacity permitted or under development.

Calpine Corp.

Constellation Exelon

Cypress Creek Renewables

Direct Energy


EDF Renewable Energy

EDP Renewables

Geronimo Energy

Invenergy LLC

Morgan Stanley

NewSun Energy

National Grid

Obsidian Renewables

Perennial Power Holdings, Inc.

Shell Energy North America

Sierra Pacific Industries

TLS Capital

TransAlta Energy Marketing, Inc.

Associate Companies

Bracewell LLP

Cairncross & Hempelmann

NAES / Gridforce

Sapere Consulting

Van Ness Feldman