The Natural Resources Defense Council has a new ugly map of green energy potential in the United States.
In the map layer shown above, darker shades of blue indicate higher wind energy potential. You can click on wind turbine icons to see details on individual facilities; it's a lot of good information, even if it is unattractively presented. It also has layers showing cellulosic biomass, biogas, and solar energy potential. The detail on the left shows the very high solar potential in the Southwest. The NRDC also has profiles on a few selected states, with more profiles in the offing.
The map complements this one, which they released a month ago, that looks at areas that would be harmed by the development of new renewable energy infrasructure. It appears to be the continuation of an effort on the part of the NRDC to try to define the terms of the debate as plans to invest in renewable energy go forward. Seems like a savvy thing to do.
The National Renewable Energy Laboratory also has several good maps on green energy potential.