Energy Information Administration: http://www.eia.doe.gov/
American Wind Energy Association: http://www.awea.org
Solar Energy Industries Association: http://www.seia.org
American Solar Energy Society: http://www.ases.org
North American Board of Certified Energy Practioners (NABCEP): http://www.nabcep.org
National Renewable Energy Laboratory: http://www.nrel.gov
Database of State Incentives for Renewable Energy (DSIRE): http://www.dsireusa.org
AskNature: http://www.asknature.org
