Electric power sector generation from renewable sources totaled 795 million megawatthours (MWh) in the United States during 2021, surpassing nuclear generation, which totaled 778 million MWh. The U.S. electric power sector does not include electricity generators in the industrial, commercial, or residential sectors, such as small-scale solar or wind or some combined-heat-and-power systems. Renewable generation includes electricity generated from wind, hydropower, solar, biomass, and geothermal sources.