U.S. Energy Information Administration logo
Skip to sub-navigation
See all Reports

Electric Power Annual

With Data for 2023 Release Date: October 17, 2024 Next Release: October 2025 full report PDF
Go Back
SAS Output
Table 4.08.A. Capacity Factors for Utility Scale Generators Primarily Using Fossil Fuels

  Coal Natural Gas Petroleum
Year/Month   Combined Cycle Gas Turbine Steam Turbine Internal Combustion Steam Turbine Gas Turbine Internal Combustion
  Time Adjusted Capacity (MW) Capacity Factor Time Adjusted Capacity (MW) Capacity Factor Time Adjusted Capacity (MW) Capacity Factor Time Adjusted Capacity (MW) Capacity Factor Time Adjusted Capacity (MW) Capacity Factor Time Adjusted Capacity (MW) Capacity Factor Time Adjusted Capacity (MW) Capacity Factor Time Adjusted Capacity (MW) Capacity Factor
Annual Data
2013 302,604.4 59.4% 219,902.9 48.8% 123,025.6 8.3% 75,810.5 11.2% 2,996.2 8.8% 20,022.9 12.6% 17,224.1 0.9% 4,999.4 2.1%
2014 299,064.7 60.5% 224,183.2 48.6% 124,736.9 8.3% 75,049.1 10.3% 3,026.7 10.8% 18,057.0 13.0% 16,791.5 1.2% 5,011.3 2.1%
2015 286,082.7 54.3% 231,467.5 55.8% 123,444.3 9.8% 80,348.0 11.3% 3,507.8 11.9% 14,965.4 14.0% 16,122.8 1.3% 5,075.2 2.1%
2016 269,477.1 52.8% 236,442.8 55.4% 125,148.4 11.0% 81,225.1 12.3% 3,684.3 11.5% 13,993.7 12.2% 15,114.0 1.3% 5,082.8 2.3%
2017 259,930.2 53.1% 242,839.1 51.2% 125,806.6 9.6% 79,149.4 10.7% 4,225.5 11.6% 13,290.9 13.7% 14,275.3 1.0% 5,153.3 2.1%
2018 246,866.8 53.6% 254,403.3 55.1% 126,763.4 11.9% 76,177.8 12.6% 4,446.6 13.0% 13,300.1 14.2% 14,234.9 1.3% 5,289.7 1.9%
2019 235,089.3 47.5% 266,846.5 57.4% 128,832.5 11.4% 72,797.3 14.1% 4,848.3 15.3% 11,214.7 12.8% 14,009.7 1.0% 5,287.8 2.0%
2020 220,623.2 40.5% 274,300.4 57.1% 129,085.6 11.6% 75,462.3 14.2% 5,123.0 15.1% 8,443.3 13.9% 13,875.8 1.2% 5,300.7 1.8%
2021 212,587.0 49.1% 277,618.5 55.0% 130,103.4 11.7% 74,003.4 12.5% 5,171.8 18.2% 8,385.5 14.2% 13,729.8 1.6% 5,522.7 1.8%
2022 196,396.3 48.4% 286,467.1 56.6% 130,170.6 12.9% 77,518.8 15.6% 5,526.9 18.1% 9,839.0 13.2% 15,005.7 1.6% 5,407.0 1.8%
2023 182,767.5 42.4% 291,134.7 59.7% 130,736.5 12.9% 76,908.1 17.4% 5,802.9 20.1% 8,743.2 10.1% 14,386.8 1.3% 5,418.9 1.8%
Year 2021
January 214,601.5 51.5% 275,710.6 54.7% 129,543.1 8.2% 74,184.1 7.7% 5,121.3 15.1% 8,685.9 15.9% 13,743.2 1.0% 5,537.5 1.4%
February 214,601.5 61.1% 276,710.6 51.3% 129,522.1 10.3% 74,184.7 11.9% 5,119.0 17.1% 8,685.9 15.0% 13,743.2 2.2% 5,533.6 2.0%
March 214,052.7 39.5% 276,584.0 45.3% 129,522.1 8.0% 74,184.7 7.6% 5,120.3 15.9% 8,685.9 13.7% 13,743.2 1.3% 5,539.0 1.8%
April 213,710.7 35.7% 276,614.0 45.5% 129,755.4 10.4% 74,184.7 10.0% 5,120.3 16.8% 8,685.9 9.0% 13,743.2 1.4% 5,536.4 1.7%
May 213,152.2 40.9% 276,682.0 47.6% 130,036.3 9.7% 74,081.6 10.2% 5,180.3 14.4% 8,685.9 11.9% 13,743.2 1.3% 5,535.9 1.2%
June 212,180.1 58.1% 277,202.0 61.8% 130,036.3 15.0% 74,081.1 18.0% 5,171.9 20.1% 8,173.5 10.5% 13,734.1 2.0% 5,530.7 1.6%
July 212,180.1 65.4% 277,202.0 67.9% 130,070.3 16.4% 73,989.3 20.0% 5,169.6 22.6% 8,173.5 16.2% 13,734.1 1.8% 5,512.6 1.4%
August 212,180.1 65.6% 277,971.5 68.4% 130,410.4 17.0% 73,989.3 21.3% 5,194.0 23.0% 8,173.5 17.5% 13,734.1 2.3% 5,517.4 1.8%
September 212,180.1 52.8% 278,530.7 58.5% 130,499.4 11.1% 73,840.3 14.5% 5,199.4 20.3% 8,173.5 15.8% 13,734.1 1.5% 5,512.0 2.2%
October 211,277.1 40.7% 278,545.7 53.2% 130,499.4 12.4% 73,775.5 12.7% 5,212.2 18.3% 8,173.5 16.0% 13,717.5 1.6% 5,511.2 2.2%
November 211,264.5 39.2% 279,817.8 51.6% 130,663.1 11.6% 73,779.4 8.9% 5,221.7 17.3% 8,173.5 15.9% 13,700.1 1.5% 5,508.5 2.0%
December 209,825.7 39.6% 279,817.8 53.6% 130,644.1 9.6% 73,779.4 7.4% 5,227.7 17.1% 8,173.5 13.8% 13,689.1 1.2% 5,498.2 2.0%
Year 2022
January 202,043.3 57.4% 284,236.2 55.6% 129,881.8 11.3% 78,088.0 14.8% 5,454.3 16.0% 9,839.0 19.6% 15,279.8 1.4% 5,401.4 2.2%
February 202,013.8 52.2% 284,236.2 52.4% 129,967.8 9.6% 78,088.0 11.7% 5,454.3 14.8% 9,839.0 15.3% 15,279.8 0.9% 5,402.0 1.8%
March 200,821.8 41.0% 284,247.2 46.6% 130,009.3 8.2% 77,514.0 8.5% 5,484.9 13.6% 9,839.0 9.8% 15,245.8 1.0% 5,392.6 1.7%
April 200,376.8 38.5% 284,450.3 44.2% 130,070.8 9.6% 77,514.0 9.6% 5,486.4 13.5% 9,839.0 10.1% 15,119.1 0.9% 5,395.3 1.7%
May 198,851.8 42.1% 283,899.1 49.6% 130,070.8 12.5% 77,514.0 14.6% 5,544.4 14.7% 9,839.0 12.0% 15,119.1 1.4% 5,399.7 1.8%
June 195,863.8 52.5% 286,389.0 61.2% 130,127.6 16.9% 77,510.0 20.2% 5,546.0 18.8% 9,839.0 12.2% 14,947.1 1.8% 5,407.0 1.9%
July 195,881.8 59.6% 287,485.0 70.5% 130,274.1 20.1% 77,510.0 28.1% 5,549.7 23.0% 9,839.0 10.3% 14,947.1 2.5% 5,410.4 1.7%
August 194,856.8 59.2% 288,566.5 72.4% 130,035.1 18.5% 77,379.0 22.4% 5,563.9 25.1% 9,839.0 11.8% 14,947.1 2.2% 5,410.7 1.7%
September 192,425.8 47.3% 288,493.5 63.9% 130,259.8 13.8% 77,374.0 16.3% 5,559.0 21.7% 9,839.0 13.1% 14,858.1 1.7% 5,409.2 1.8%
October 192,425.8 38.7% 288,458.5 53.0% 130,348.7 10.2% 77,374.0 13.3% 5,558.0 17.9% 9,839.0 12.3% 14,817.2 1.4% 5,413.1 1.8%
November 192,271.3 40.9% 288,485.6 52.0% 130,380.6 11.2% 77,379.8 13.7% 5,555.9 17.9% 9,839.0 13.6% 14,789.6 1.0% 5,420.9 1.6%
December 189,316.3 51.4% 288,504.6 56.8% 130,606.5 12.5% 77,026.8 14.1% 5,560.7 19.3% 9,839.0 18.2% 14,735.6 2.8% 5,421.2 2.2%
Year 2023
January 186,822.6 44.6% 287,456.6 57.4% 130,416.1 9.3% 78,868.8 9.6% 5,738.6 18.7% 8,743.2 9.1% 14,494.8 1.0% 5,428.8 1.9%
February 186,812.0 37.3% 287,688.6 57.1% 130,416.1 9.2% 78,868.8 10.3% 5,742.7 18.0% 8,743.2 11.7% 14,494.8 1.4% 5,426.8 1.8%
March 186,007.1 36.2% 288,941.6 53.6% 130,356.1 10.5% 78,303.3 11.5% 5,744.2 19.5% 8,743.2 8.9% 14,494.8 1.1% 5,422.2 1.8%
April 186,007.1 30.6% 289,463.1 47.9% 130,356.1 11.2% 77,868.3 13.4% 5,746.9 16.2% 8,743.2 8.4% 14,494.8 1.2% 5,422.2 2.0%
May 184,515.1 32.6% 291,190.1 53.0% 130,248.2 12.4% 77,038.3 15.4% 5,745.0 16.0% 8,743.2 7.9% 14,463.5 1.2% 5,413.4 1.8%
June 182,361.9 44.5% 291,270.1 63.7% 130,403.5 15.0% 76,724.3 22.1% 5,752.6 21.4% 8,743.2 10.2% 14,315.1 1.3% 5,399.1 1.8%
July 181,713.0 58.3% 292,441.8 74.0% 130,558.5 19.4% 76,724.3 31.7% 5,752.6 26.0% 8,743.2 14.3% 14,315.1 1.6% 5,414.9 1.6%
August 181,099.7 58.0% 292,441.8 74.1% 131,221.5 19.0% 76,724.3 31.0% 5,884.2 26.7% 8,743.2 13.3% 14,315.1 1.9% 5,416.6 1.6%
September 180,234.7 46.4% 292,441.8 66.2% 131,221.5 13.6% 75,688.3 22.4% 5,878.3 22.0% 8,743.2 14.5% 14,315.1 1.3% 5,425.7 1.5%
October 179,749.7 38.6% 293,100.7 53.7% 131,221.5 12.6% 75,687.9 16.3% 5,879.5 18.9% 8,743.2 8.7% 14,315.1 1.3% 5,429.6 1.7%
November 179,749.7 39.7% 293,100.7 54.8% 131,217.5 11.5% 75,681.6 14.1% 5,880.7 18.8% 8,743.2 6.8% 14,315.1 1.0% 5,414.6 2.1%
December 178,441.7 42.3% 293,802.5 60.0% 131,178.5 10.1% 74,854.6 10.8% 5,885.5 18.6% 8,743.2 7.7% 14,315.1 1.2% 5,413.5 1.8%

Values are final.
Time adjusted capacity for month rows is the summer capacity of generators in operation for the entire month; units that began operation during the month or that retired during the month are excluded. Time adjusted capacity for year rows is a time weighted average of the month rows.
Capacity factors are a comparison of net generation with available capacity. See the technical note for an explanation of how capacity factors are calculated.
Sources: U.S. Energy Information Administration, Form EIA-923, Power Plant Operations Report; U.S. Energy Information Administration, Form EIA-860, 'Annual Electric Generator Report' and Form EIA-860M, 'Monthly Update to the Annual Electric Generator Report.'