2006-2007
AES Corporation
Anonymous Contributor
Douglas DeNio
The Department of Energy / National Renewable Energy Laboratory
EmPower
The Energy Foundation
Nancy Floyd, Nth Power
Google AdWords
Henry P. Kendall Foundation
HSBC - North America
International Energy Agency
Joyce Foundation
Kema, Inc.
Scott Miller, Korn/Ferry Intl.*
National Park Service
New York State Energy Research and Development Authority
Oak Foundation
Karl Rábago
Renewable Energy Marketing Association
Renewable Energy Policy Network for the 21st Century
Robert and Patricia Switzer Foundation
Rockefeller Brothers Fund
Silicon Valley Social Venture Fund
The John Merck Fund
The San Francisco Foundation
Timberland Foundation
U.S. Environmental Protection Agency
Weyerhaeuser Company Foundation
Wilson Sonsini Goodrich & Rosati*
Wolfensohn Family Foundation

2004-2005
California Energy Commission
Commission for Environmental Cooperation-Montreal
Connecticut Clean Energy Fund
Green Capital Network
Joyce Foundation
Massachusetts Technology Collaborative
New Jersey Board of Public Utilities
New York Community Trust
Oak Foundation
Renewable Energy and Energy Efficiency Partnership
Rhode Island Renewable Energy Fund
Rockefeller Brothers Fund
Sacramento Municipal Utility District
State of Nevada Energy Office
Steven and Michele Kirsch Foundation
The Energy Foundation
The Izaak Walton League of America
The John Merck Fund
The National Park Service
The San Francisco Foundation
The Surdna Foundation
U.S. Environmental Protection Agency
Western Area Power Administration
Western Governors' Association

2002-2003
American Public Power Association
California Energy Commission
California Institute for Energy Efficiency
Commission for Environmental Cooperation-Montreal
Joyce Foundation
National Wind Coordinating Committee
New York State Energy Research and Development Authority
Oak Foundation
Rhode Island Renewable Energy Fund
State of Nevada Energy Office
The Energy Foundation
The Surdna Foundation
Turner Foundation
U.S. Environmental Protection Agency
Western Area Power Administration
Western Governors' Association

2000-2001
Alliance to Save Energy
California Public Utilities Commission
Emily Hall Tremaine Foundation
Greenville Foundation
Shell Foundation for Sustainability
The Energy Foundation
The Surdna Foundation
U.S. Department of Energy
W. Alton Jones Foundation
World Bank/GEF

1999-2000
California Energy Commission
The Bullitt Foundation
The Compton Foundation
The Energy Foundation
The John Merck Fund
The Surdna Foundation
U.S. Department of Energy
U.S. Environmental Protection Agency
W. Alton Jones Foundation
William Penn Foundation
Winrock International
World Bank/GEF

1997-1998
California Energy Commission
International Energy Agency
Rockefeller Brothers Fund
The Energy Foundation
The Independent Energy Producers Association
The John Merck Fund
The Surdna Foundation
U.S. Department of Energy
U.S. Environmental Protection Agency
William Penn Foundation

* indicates in-kind contributors