Air Products
AlliedSignal
Atlantic Marine Corps Communities
Balfour Beatty Communities
BOC Gases
Carolina Power and Light
Chemical Manufacturers Association, now known as American Chemistry Council
Clean Energy Group
Conoco
Corn Products International
Department of Homeland Security
Detroit Edison
Duquesne Light Company
The Edison Electric Institute
ElfAtochem
Entergy
Exxon Production Research
General Electric
Hampshire Chemical Company
Lincoln Housing Properties
Long Island Light Co
Lower Colorado River Authority
Mid American Power
New Century Energy Company
Noramco, Northern States Power
Potomac Electric Company
PP&L
PSE&G
Reliant Energy
Royal Thai Army
Southern Companies
Stanley Tools
TRI States Generation Company
TVA
National Security Agency
Defense Logistics Agency
US Joint Chiefs of Staff
US Air and Army National Guard
US Army
US Army Corps of Engineers
US Army Surgeon General – MILVAX Program
US Marines
US Navy
US Air Force
U.S. Postal Service
Virginia Power

^