Browse Topics is a resource designed to be the pathway to any publicly-accessible, Government information. Maintained by volunteer librarians, Browse Topics helps the public locate data, conduct research, and learn about various government Web sites.
The National Renewable Energy Laboratory (NREL) "develops renewable energy and energy efficiency technologies and practices, advances relatd science and engineering, and transfers knowledge and innovations to address the nation's energy and environmental goals." See the Overview and Renewable Energy Basics sections for more information. There ...
Science.gov "is a gateway to government science information and research results." The site contains an Energy & Energy Conservation section that provides information concerning renewable sources as well as many other energy-related topics.