Environment & Energy
In reply to the discussion: "The battle of the energy titans comes down to one great contest: nuclear vs. coal." [View all]Bob Wallace
(549 posts)"Current wind technology deployed in nonenvironmentally protected areas could generate 37,000,000 gigawatt-hours of electricity per year, according to the new analysis conducted by the National Renewable Energy Laboratory and consulting firm AWS Truewind. The last comprehensive estimate came out in 1993, when Pacific Northwest National Laboratory pegged the wind energy potential of the United States at 10,777,000 gigawatt-hours.
Both numbers are greater than the 3,000,000 gigawatt-hours of electricity currently consumed by Americans each year. "
That's 10x our current use from wind alone....
http://www.wired.com/wiredscience/2010/02/better-wind-resource-maps/
How about this? That little green rectangle on the US portion - that's the amount of PV solar we would need if we used nothing but solar to provide all our electricity. And it's based on lower efficiency panels than we're now making.

Or this?
The Earth houses a vast energy supply in the form of geothermal resources. Domestic resources are equivalent to a 30,000-year energy supply at our current rate for the United States.
http://www1.eere.energy.gov/geothermal/pdfs/40665.pdf