1. 2009 Generators that have Achieved Certification Arizona Public Service Company ATCO Electric Ltd. Avista Corporation Basin Electric Power Company Black Hills Power Black Hills Service Company British Columbia Hydro and Power Authority California Department of Water Resources Colorado Springs Utilities Comisión Federal de Electricidad Deseret Generation & Transmission Cooperative

2. 2009 Generators that have Achieved Certification Dynegy, Inc. El Paso Merchant Energy Idaho Power Company Imperial Irrigation District Midway Sunset Cogeneration Company Modesto Irrigation District Northern California Power Agency NV Energy Pacific Gas & Electric Company PacifiCorp Platte River Power Authority

3. 2009 Generators that have Achieved Certification Portland General Electric PPL Montana, LLC Public Service Company of Colorado Puget Sound Energy Reliant Energy, Inc. Sacramento Municipal Utility District Salt River Project Seattle City Light Southern California Edison Company Spokane Regional Solid Waste System Turlock Irrigation District