NRDC’s map – Renewable Energy for America: harvesting the benefits of homegrown renewable energy – can be viewed by renewable energy type (biogas, cellulosic biomass, solar, and wind) The gradient shade will show potential for this type of energy down to county level. You can zoom in or zoom by state & zipcode. Icons depict locations or future locations of biodigesters, biofuels, and wind power. Clicking on the by state tab you can read summaries of various state’s profiles. Libraries can find out and inform their public as to potential renewable energy projects is in their area.