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Electric Power Monthly

Data for September 2019  |  Release date: November 26, 2019     Next release: December 23, 2019  |
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SAS Output
Table 6.07.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 Capacity Factor Time Adjusted Capacity Capacity Factor Time Adjusted Capacity Capacity Factor Time Adjusted Capacity Capacity Factor Time Adjusted Capacity Capacity Factor Time Adjusted Capacity Capacity Factor Time Adjusted Capacity Capacity Factor Time Adjusted Capacity Capacity Factor
Annual Data
2009 312,091.2 64.2% 200,546.1 43.9% 117,120.3 6.8% 80,357.5 10.9% 2,360.1 6.6% 32,621.3 15.0% 19,812.2 1.7% 5,002.0 2.4%
2010 313,393.9 67.1% 202,404.4 44.3% 116,426.0 7.8% 80,233.7 11.1% 2,543.0 6.5% 29,871.2 13.6% 19,565.5 2.0% 5,016.0 2.1%
2011 314,056.1 62.8% 210,518.7 44.3% 119,144.1 7.9% 78,898.6 11.7% 2,822.5 8.4% 26,683.0 12.6% 18,397.7 1.3% 4,986.0 2.2%
2012 304,974.9 56.2% 217,938.2 52.2% 119,319.4 8.9% 74,200.2 13.3% 2,988.8 7.3% 22,483.7 13.7% 17,773.5 1.3% 4,942.5 2.0%
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 55.0% 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%
Year 2017
January 262,832.9 59.2% 238,604.9 47.1% 125,758.5 8.1% 79,997.2 5.0% 3,984.2 10.7% 13,545.9 11.5% 14,360.0 1.0% 5,165.1 2.7%
February 262,623.9 49.4% 238,711.5 44.7% 125,637.1 8.2% 79,997.2 4.6% 4,151.9 9.5% 13,545.9 10.9% 14,360.0 1.0% 5,162.5 2.2%
March 262,179.7 45.8% 239,783.7 44.8% 125,636.3 9.3% 79,980.6 7.6% 4,198.4 9.5% 13,545.9 13.7% 14,336.4 1.0% 5,153.8 2.4%
April 260,949.7 43.3% 239,783.7 42.6% 125,704.3 8.3% 79,618.6 9.0% 4,218.8 9.7% 13,545.9 10.5% 14,336.4 0.7% 5,159.8 1.7%
May 260,949.7 47.9% 242,325.8 45.6% 125,668.3 8.9% 79,584.1 9.4% 4,239.0 10.0% 13,545.9 16.0% 14,336.4 0.9% 5,158.8 1.8%
June 259,190.0 57.8% 242,355.4 55.5% 125,748.3 10.4% 78,791.5 14.1% 4,240.1 12.4% 13,110.9 16.4% 14,286.4 1.0% 5,149.4 1.8%
July 259,190.0 66.3% 244,634.3 66.3% 125,748.3 12.3% 78,791.5 20.4% 4,240.6 15.1% 13,110.9 17.1% 14,238.4 1.1% 5,149.0 1.9%
August 259,190.0 62.2% 245,481.9 64.9% 125,797.8 11.3% 78,697.5 16.0% 4,246.9 14.3% 13,110.9 15.5% 14,238.4 1.1% 5,137.2 2.1%
Sept 259,006.0 53.2% 245,481.9 55.4% 125,887.8 10.6% 78,645.7 13.2% 4,297.0 12.7% 13,110.9 14.6% 14,238.4 1.2% 5,144.8 2.1%
October 258,429.0 47.2% 245,521.9 48.1% 125,894.8 9.5% 78,643.7 12.5% 4,297.0 11.8% 13,110.9 12.0% 14,238.4 1.1% 5,148.9 1.9%
November 258,278.0 49.0% 245,521.9 45.8% 126,098.8 8.6% 78,551.6 7.6% 4,297.0 11.5% 13,110.9 12.8% 14,191.8 0.9% 5,144.3 1.9%
December 256,530.0 55.8% 245,520.9 52.3% 126,089.8 9.4% 78,543.2 9.0% 4,293.0 11.9% 13,110.9 13.5% 14,149.8 1.6% 5,165.9 2.3%
Year 2018
January 251,730.8 64.0% 247,709.0 51.4% 126,362.3 11.7% 78,615.1 10.9% 4,280.9 11.8% 13,440.4 19.9% 14,336.6 3.5% 5,330.8 2.5%
February 250,522.8 49.1% 247,709.0 51.6% 126,189.1 9.3% 78,185.1 5.8% 4,292.9 12.0% 13,440.4 12.1% 14,336.6 0.8% 5,333.5 1.8%
March 249,781.8 43.8% 247,709.0 49.1% 126,170.5 10.3% 77,411.2 7.5% 4,288.5 11.9% 13,440.4 10.9% 14,336.6 0.9% 5,326.9 1.8%
April 248,603.8 41.5% 248,199.0 45.6% 126,338.5 10.5% 77,369.9 8.5% 4,372.4 10.9% 13,440.4 12.9% 14,336.6 1.0% 5,317.8 2.0%
May 248,603.8 46.7% 252,604.7 49.8% 126,690.5 11.3% 76,359.3 15.3% 4,372.4 12.0% 13,440.4 10.0% 14,336.6 1.1% 5,319.2 1.8%
June 245,407.8 58.0% 255,100.3 58.7% 126,881.1 12.4% 75,658.1 16.3% 4,362.4 13.1% 13,440.4 15.0% 14,166.6 1.4% 5,275.1 1.8%
July 245,407.8 63.8% 256,721.3 69.8% 126,878.6 16.3% 75,658.1 23.3% 4,369.0 18.3% 13,440.4 16.6% 14,166.6 1.5% 5,276.5 1.8%
August 245,407.8 63.6% 257,487.3 69.3% 127,267.4 15.0% 75,658.1 20.3% 4,594.6 16.9% 13,440.4 15.6% 14,166.6 1.3% 5,277.8 2.1%
Sept 245,113.4 55.3% 258,463.3 63.2% 127,146.3 13.8% 75,650.6 15.6% 4,594.3 13.8% 13,440.4 16.9% 14,166.6 1.3% 5,274.0 2.0%
October 244,837.5 48.5% 258,836.7 52.9% 127,104.0 11.6% 75,120.6 12.6% 4,595.0 12.4% 13,440.4 13.7% 14,166.6 1.1% 5,269.0 2.0%
November 244,426.5 53.2% 260,948.0 48.8% 126,977.7 10.5% 74,758.6 8.7% 4,613.6 11.7% 13,440.4 13.4% 14,154.6 1.1% 5,240.4 1.8%
December 242,785.6 55.9% 260,868.5 48.9% 127,108.3 9.1% 73,841.6 6.3% 4,613.6 11.0% 11,788.4 12.6% 14,154.6 1.0% 5,237.9 1.7%
Year 2019
January 242,483.1 56.5% 263,721.2 54.0% 127,635.0 8.0% 73,620.8 8.7% 4,616.7 10.0% 11,788.4 12.8% 14,154.6 0.7% 5,237.9 2.0%
February 239,549.6 50.5% 263,721.2 55.3% 127,635.0 8.5% 74,611.3 8.0% 4,689.2 12.3% 11,788.4 12.8% 14,154.6 0.7% 5,239.9 1.7%
March 238,318.6 45.0% 263,404.2 50.0% 127,622.1 8.0% 74,002.3 9.0% 4,689.2 10.9% 11,855.4 12.2% 14,135.6 0.5% 5,237.1 1.6%
April 236,952.8 35.9% 266,149.0 45.0% 127,735.3 9.6% 73,998.0 11.0% 4,872.2 10.0% 11,709.4 11.1% 14,135.6 0.8% 5,234.7 1.8%
May 236,202.8 41.7% 266,366.4 48.6% 128,182.4 10.4% 73,998.0 13.8% 4,872.2 10.7% 11,709.4 15.8% 14,135.6 1.0% 5,243.5 2.1%
June 236,095.2 47.0% 268,090.8 59.7% 128,299.5 11.4% 73,703.3 16.4% 4,873.1 12.7% 11,709.4 15.0% 14,125.3 1.1% 5,243.5 2.3%
July 235,112.7 58.4% 268,908.8 69.8% 128,644.2 19.3% 73,673.3 24.7% 4,895.1 21.2% 11,709.4 16.7% 14,125.3 2.3% 5,247.0 3.0%
August 235,112.7 54.6% 268,908.8 70.9% 128,759.7 18.8% 73,673.3 25.3% 4,895.1 22.1% 11,709.4 16.4% 14,119.6 2.4% 5,236.9 3.2%
Sept 235,012.7 51.6% 268,908.8 63.9% 128,719.7 14.8% 73,673.3 19.9% 4,895.1 17.6% 11,642.4 15.1% 14,133.1 1.6% 5,261.2 2.7%

Values for 2018 and prior years are final. Values for 2019 are preliminary.
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.'