| 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 | ||||||||||||||||
| 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% |
| 2024 | 176,028.6 | 42.6% | 292,189.2 | 60.5% | 132,099.1 | 13.9% | 75,196.7 | 19.9% | 6,044.6 | 18.0% | 8,122.7 | 8.9% | 14,167.2 | 1.9% | 5,461.8 | 1.8% |
| 2025 | 169,851.7 | 48.8% | 292,281.3 | 58.7% | 134,388.3 | 13.6% | 76,503.5 | 19.6% | 6,595.2 | 18.0% | 8,381.1 | 10.5% | 13,300.6 | 1.7% | 5,411.1 | 1.9% |
| 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 | 53.8% | 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% |
| Year 2024 | ||||||||||||||||
| January | 177,497.2 | 56.8% | 293,471.8 | 64.1% | 131,958.7 | 12.9% | 75,752.5 | 15.9% | 5,899.4 | 18.5% | 8,122.7 | 10.8% | 14,230.3 | 2.0% | 5,471.1 | 1.8% |
| February | 177,497.2 | 36.2% | 293,471.8 | 56.6% | 131,611.5 | 10.0% | 75,745.5 | 10.4% | 5,901.6 | 16.4% | 8,122.7 | 8.2% | 14,230.3 | 1.3% | 5,471.3 | 1.6% |
| March | 177,323.7 | 29.8% | 293,471.8 | 51.1% | 131,662.7 | 10.6% | 75,334.8 | 13.0% | 5,898.6 | 16.1% | 8,122.7 | 8.0% | 14,230.3 | 1.3% | 5,472.2 | 1.8% |
| April | 176,697.6 | 29.9% | 292,884.3 | 46.9% | 131,662.7 | 13.1% | 75,334.8 | 15.9% | 5,901.7 | 14.8% | 8,122.7 | 8.0% | 14,230.3 | 1.6% | 5,474.9 | 2.2% |
| May | 176,201.6 | 35.6% | 292,984.3 | 53.9% | 131,655.7 | 13.4% | 75,334.8 | 20.4% | 5,951.9 | 16.0% | 8,122.7 | 8.5% | 14,230.3 | 1.8% | 5,466.3 | 1.7% |
| June | 176,021.6 | 49.0% | 291,603.0 | 65.7% | 131,565.2 | 15.1% | 75,084.8 | 26.3% | 6,000.8 | 19.5% | 8,122.7 | 8.6% | 14,122.3 | 2.0% | 5,457.1 | 1.9% |
| July | 176,021.6 | 55.0% | 291,603.0 | 75.8% | 131,960.2 | 20.9% | 75,084.8 | 32.0% | 6,007.2 | 22.5% | 8,122.7 | 10.2% | 14,122.3 | 3.3% | 5,470.8 | 1.7% |
| August | 176,021.6 | 53.2% | 291,064.9 | 75.3% | 132,555.6 | 19.2% | 75,084.8 | 32.4% | 6,181.5 | 22.3% | 8,122.7 | 9.5% | 14,122.3 | 2.7% | 5,465.5 | 1.9% |
| September | 175,762.6 | 43.7% | 291,601.2 | 67.6% | 132,555.6 | 14.7% | 75,084.8 | 21.6% | 6,182.0 | 19.0% | 8,122.7 | 7.8% | 14,122.3 | 1.7% | 5,454.9 | 1.6% |
| October | 174,584.6 | 37.0% | 291,454.9 | 55.6% | 132,524.6 | 13.1% | 74,879.0 | 19.5% | 6,183.8 | 16.3% | 8,122.7 | 8.2% | 14,122.3 | 1.8% | 5,455.3 | 1.8% |
| November | 174,597.6 | 35.9% | 291,464.9 | 54.9% | 132,706.8 | 12.3% | 74,875.6 | 16.4% | 6,183.8 | 18.0% | 8,122.7 | 8.3% | 14,122.3 | 1.7% | 5,448.1 | 1.7% |
| December | 174,177.6 | 48.7% | 291,238.9 | 58.5% | 132,741.8 | 11.0% | 74,786.7 | 14.2% | 6,236.6 | 16.7% | 8,122.7 | 10.5% | 14,122.3 | 1.5% | 5,434.3 | 1.9% |
| Year 2025 | ||||||||||||||||
| January | 170,935.6 | 62.8% | 292,167.6 | 62.2% | 133,745.4 | 13.6% | 76,569.1 | 18.9% | 6,356.5 | 18.5% | 8,455.0 | 14.5% | 13,643.6 | 2.0% | 5,440.0 | 2.1% |
| February | 170,525.6 | 53.1% | 292,167.6 | 58.4% | 133,746.8 | 11.4% | 76,569.1 | 15.3% | 6,415.1 | 17.0% | 8,455.0 | 9.9% | 13,643.6 | 1.3% | 5,415.0 | 1.8% |
| March | 170,142.6 | 38.4% | 292,096.1 | 46.9% | 133,439.7 | 9.5% | 76,567.1 | 10.4% | 6,451.5 | 14.7% | 8,455.0 | 7.4% | 13,643.6 | 0.9% | 5,410.9 | 1.7% |
| April | 170,151.6 | 36.8% | 292,109.6 | 44.1% | 133,439.7 | 11.6% | 76,510.1 | 16.0% | 6,451.5 | 13.8% | 8,455.0 | 7.8% | 13,643.6 | 1.3% | 5,412.8 | 1.8% |
| May | 170,151.6 | 37.9% | 292,169.7 | 51.9% | 133,289.7 | 10.5% | 76,508.0 | 17.7% | 6,562.2 | 15.6% | 8,455.0 | 9.2% | 13,162.2 | 1.1% | 5,398.8 | 1.4% |
| June | 170,151.6 | 51.8% | 292,222.7 | 63.9% | 133,985.3 | 16.1% | 76,508.0 | 24.9% | 6,561.3 | 18.6% | 8,329.0 | 11.2% | 13,109.3 | 2.0% | 5,402.0 | 2.0% |
| July | 170,165.3 | 62.3% | 292,222.7 | 72.4% | 134,802.5 | 22.5% | 76,505.8 | 33.3% | 6,561.3 | 22.0% | 8,329.0 | 14.7% | 13,109.3 | 2.6% | 5,400.8 | 1.9% |
| August | 170,165.3 | 54.5% | 292,222.7 | 72.7% | 134,850.1 | 17.5% | 76,505.8 | 27.5% | 6,561.3 | 22.3% | 8,329.0 | 9.9% | 13,109.3 | 2.1% | 5,404.8 | 1.9% |
| September | 170,165.3 | 47.9% | 292,222.7 | 66.6% | 135,280.8 | 14.8% | 76,462.8 | 20.5% | 6,745.6 | 21.4% | 8,329.0 | 9.5% | 13,149.3 | 1.5% | 5,410.0 | 1.8% |
| October | 169,169.9 | 42.4% | 292,222.7 | 53.9% | 135,325.7 | 12.5% | 76,464.8 | 19.5% | 6,739.2 | 18.0% | 8,329.0 | 11.4% | 13,149.3 | 1.4% | 5,418.3 | 2.0% |
| November | 168,269.9 | 45.0% | 292,706.2 | 52.4% | 135,325.2 | 11.2% | 76,464.8 | 14.4% | 6,786.2 | 18.0% | 8,329.0 | 8.2% | 13,149.3 | 1.9% | 5,414.5 | 2.0% |
| December | 168,269.9 | 52.3% | 292,838.2 | 58.6% | 135,382.2 | 11.3% | 76,410.8 | 16.1% | 6,938.3 | 16.4% | 8,329.0 | 12.4% | 13,123.3 | 1.9% | 5,406.0 | 2.0% |
| 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.' |