Below are maps that can help you identify the availability of renewable energy resources across the United States.

Solar: http://www.energysavers.gov/pdfs/208.pdf

Wind: http://www.windpoweringamerica.gov/pdfs/wind_maps/us_windmap.pdf

Biomass Resource Map: http://www.energysavers.gov/images/biomass_map.gif

Geothermal: http://www1.eere.energy.gov/geothermal/geomap.html