US - Northwest
AVISTA Utilities
Bonneville Power Administration
Cascade Natural Gas
Energy Trust of Oregon
Eugene Water & Electric Board
Idaho Power
NW Energy Efficiency Alliance
NW Natural
Oregon Department of Energy
Puget Sound Energy
Seattle City Light
Snohomish Public Utility District
Tacoma Public Utilities

US - Midwest
Alliant Energy
CenterPoint Energy (AR)
CenterPoint Energy (MN)
City Utilities of Springfield (MO)
ComEd
Great River Energy
Iowa Energy Center
Madison Gas & Electric
MidAmerican Energy
Minnesota Dept. of Commerce
MW Energy Efficiency Alliance
Ohio Dept. of Development
So. Minnesota Munic. Power
Vectren
We Energies
Wisconsin Division of Energy Services
Wisconsin Focus on Energy
Xcel Energy-Minnesota

US - West
Cal. Inst. for Energy & Environ.
California Energy Commission
L.A. Dept. of Water & Power
Pacific Gas & Electric
San Diego Gas & Electric
SMUD
Southern California Edison
Southern California Gas

U. S. - Mid Atlantic
Atlantic City Electric
Baltimore Gas & Electric
Delmarva Power
Pepco
Public Service Electric & Gas
South Jersey Gas

US - Northeast
Bay State Gas
Berkshire Gas
Cape Light Compact
Efficiency Maine
Efficiency Vermont
Long Island Power Authority
Mass. Div. of Energy Resources
N.J. Clean Energy Program
National Grid USA
NE Energy Eff. Partnerships
New England Gas Company
New Hampshire Electric Co-op
New York Power Authority
Northeast Utilities
NSTAR Electric & Gas
NYSERDA
Public Service of New Hampshire
United Illuminating
Unitil
Vermont Dept. of Public Service
Vermont Gas Systems, Inc.
Yankee Gas

US - South
Austin Energy
Dominion Virginia Power
Oncor
Tennessee Valley Authority

US - Southwest
Arizona Public Service
Nevada Power Company
Questar
Rocky Mountain Power
Salt River Project
Sierra Pacific Power Company
SW Energy Efficiency Project
Xcel Energy-Colorado

US - National
ACEEE
Alliance to Save Energy
Lawrence Berkeley National Lab
Natural Res. Defense Council
New Buildings Institute
Oak Ridge National Lab
Pacific NW National Laboratory

Canada
BC Hydro
Efficiency NB
Enbridge Gas Distribution
FortisBC
Gaz Métro
Hydro-Québec
Natural Resources Canada
Ontario Power Authority
Terasen Gas
Union Gas