The Energy Information Administration (EIA) found that renewables generated 21% of all electricity in the country for 2020. Renewables like biomass, geothermal, solar, and wind accounted for 834 billion kilowatt-hours (kWh) of the nation's power last year. That falls just behind natural gas, which generated 1,617 billion kWh or 40% of all energy in the U.S.