United States wind energy policy
There are currently 5,600 MW of projects under construction in 2011. The U.S. Department of Energy's 2011 report "20% Wind Energy by 2030" envisioned that wind power could supply 20% of all U.S. electricity, which included a contribution of 4% from offshore wind power.
Solar power in the United States
A 1998 report by the United States Department of Energy found available domestic solar energy (including biomass) technically accessible regardless of cost amounted to 586,687 Quadrillion BTUs (Quads); 95% of this was biomass. 
Coal represented the second largest resource, a distant 38,147 Quads. 
Predictions of how much solar power was economically feasible to collect amounted to 352 quads, compared with 5,266 quads from coal. 
The assumptions used in the report were based on a predicted 2010 price of a barrel of oil being $38, and multiplied annual renewable resources by 30 for comparison with non-renewable resources. The total annual energy consumption of the United States in 2007 was approximately 100 Quads, less than 0.5% of what is theoretically available from sunlight.