DSIRE
The Database of State Incentives for Renewables and Efficiency provides a searchable comprehensive database of state, local and utility based incentives.

SEIA
Solar Energy Industries Association works to expand the use of solar technologies, strengthen research and development, remove market barriers and improve education and outreach for solar.

SRCC
Solar Rating and Certification Corporation administers a certification, rating and labeling program for solar collectors and a similar program for complete solar water heating systems.

NREL
The National Renewable Energy Laboratory provides information on installing a solar hot water heating system in your home and solar radiation maps.

Solar Energy International
Solar Energy International is a resource for education and training programs.

U.S. Department of Energy
The U.S. Department of Energy Consumer’s Guide to Energy Efficiency and Renewable Energy provides additional information on Solar Swimming Pool Heaters.