What is U.S. electricity generation by energy source?

In 2019, about 4,118 billion kilowatthours (kWh) (or about 4.12 trillion kWh) of electricity were generated at utility-scale electricity generation facilities in the United States.1 About 63% of this electricity generation was from fossil fuels—coal, natural gas, petroleum, and other gases. About 20% was from nuclear energy, and about 18% was from renewable energy sources.

The U.S. Energy Information Administration estimates that an additional 35 billion kWh of electricity generation was from small-scale solar photovoltaic systems in 2019.2

U.S. utility-scale electricity generation by source, amount, and share of total in 20191 Energy source Billion kWh Share of total Total - all sources 4,118 Fossil fuels (total) 2,580 62.7% Natural Gas 1,582 38.4% Coal 966

23.5% Petroleum (total) 19

0.5% Petroleum liquids 12 0.3% Petroelum coke 7

0.2% Other gases 14 0.3% Nuclear 809 19.7% Renewables (total) 720 17.5% Hydropower 274 6.6% Wind 300 7.3% Biomass (total) 58 1.4% Wood 40 1.0% Landfill gas 10 0.2% Municipal solid waste (biogenic) 6

0.1% Other biomass waste 2

0.1% Solar 72

1.8% Photovoltaic 69 1.7% Solar thermal 3

0.1% Geothermal 16 0.4% Pumped storage hydropower3 -5 -0.1% Other sources3 13 0.3% 1 Preliminary data for 2019. Utility-scale electricity generation is electricity generation from power plants with at least one megawatt (or 1,000 kilowatts) of total electricity generating capacity. Data are for net electricity generation.

2 Small-scale solar photovoltaic systems are electricity generators with less than one megawatt of electricity generating capacity that are usually at or near the location where the electricity is consumed. Most small-scale solar photovoltaic systems are installed on building rooftops.

3 Pumped storage hydroelectricity generation is negative because most pumped storage electricity generation facilities use more electricity than they produce on an annual basis. Most pumped storage systems use fossil fuels or nuclear energy for pumping water to the storage component of the system. Learn more:

Electric Power Monthly: Chapter 1: Net Generation

Electric Power Annual: Chapter 3: Net Generation

Monthly Energy Review: Electricity

Energy Explained: Electricity in the United States

Last updated: February 27, 2020

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