U.S. Dept. of Energy. Ofc. of Conservation and Renewable Energy. Div. of Photovoltaic Energy TechnologyU.S. National Aeronautics and Space Administration (NASA). Lewis Research CenterUSAID. Bur. for Science and Technology. Ofc. of Energy
Authoring organization
Engineering and Economics Research, Inc.Kenneth W. Cobb, Consulting EngineersNational Rural Electric Cooperative Association