The NREL has posted maps of the renewable energy generation potential in the US (see .pptx for the maps and .pdf for the report). The US has the potential to generate 481,500 tWh in total from all sources. The theoretical capacity potential by source includes:

• Solar PV/CSP): 155,000 GW (PV) 8,000GW (CSP)
• Wind: 11,000 GW (onshore) 4,200 GW (offshore to 50 nm)
• Geothermal: 38 GW (conventional) 4,000 GW (EGS)
• Water Power: 68 GW
• Biopower: 62 GW