Comment Where does the rest come from? (Score 4, Informative) 712
According to the US Energy Administration...
In 2012, the United States generated about 4,054 billion kilowatthours of electricity. About 68% of the electricity generated was from fossil fuel (coal, natural gas, and petroleum), with 37% attributed from coal.
Energy sources and percent share of total electricity generation in 2012 were:
Coal 37%
Natural Gas 30%
Nuclear 19%
Hydropower 7%
Other Renewable 5%
Biomass 1.42%
Geothermal 0.41%
Solar 0.11%
Wind 3.46%
Petroleum 1%
Other Gases 1%