Fossil Power

Fossil Power

(coal, oil, and natural gas) is the primary energy source for generating electricity. Electricity from fossil fuels requires conversion to thermal energy as steam and then to mechanical energy to drive a generator. About three-fourths of U.S. energy comes from fossil fuels; the remainder is from nuclear reactors, hydropower, and renewables such as solar and wind. Fossil fuel emissions (carbon dioxide, nitrogen and its oxides, and sulfur oxides) account for much U.S. air pollution.