3TIER
Agricultural Research Service-U.S. Department of Agriculture
Alliance to Save Energy
American Council On Renewable Energy
American Wind Energy Association
Beacon Power
Betterbulb 
Breakthrough Technologies Institute
Business Council for Sustainable Energy
Capstone Turbine Corporation
Chevron Tech Innovations
Clean Fuels Development Coalition
Clean Fuels Foundation
ClimateMaster
CMC Energy Services
Constellation Energy
Demand Response and Advanced Metering Coalition
Dueco, Inc.
Energy Star-U.S.EPA/The Cadmus Group
Entegrity Wind
Environmental & Energy Study Institute
Flex Fuel USA
Geothermal Energy Association
GHD Inc.
Hearth and Home Technologies
Iogen Corporation
Konarka Technologies
National Hydropower Association
National Renewable Energy Laboratory
New England Marine Renewable Energy Center
North Carolina Solar Center
Oak Ridge National Laboratories
Ocean Power Technologies
Ocean Renewable Energy Coalition
Ocean Renewable Power Company
Ormat Technologies
Reluminati
Renewable Fuels Association
Resolute Marine Energy, Inc.
Standard Solar
SW Windpower
The Stella Group, Ltd
U.S. Fuel Cell Council
U.S. Green Building Council
Virent Energy Systems, Inc.