n 2013, the United States generated about 4,058 billion kilowatthours of electricity. About 67% of the electricity generated was from fossil fuel (coal, natural gas, and petroleum), with 39% attributed from coal.
In 2013, energy sources and percent share of total electricity generation were
- Coal 39%
- Natural Gas 27%
- Nuclear 19%
- Hydropower 7%
- Other Renewable 6%
- Biomass 1.48%
- Geothermal 0.41%
- Solar 0.23%
- Wind 4.13%
- Petroleum 1%
- Other Gases < 1%
so maybe multiply by ten to get on a per kWhr basis with coal
