| Table 4.08.B. Capacity Factors for Utility Scale Generators Primarily Using Non-Fossil Fuels |
| Geothermal | Hydroelectric | Nuclear | Other Biomass | Other Fossil Gas | Solar | Wind | Wood | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Year/Month | Photovoltaic | Thermal | ||||||||||||||||
| 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 | Time Adjusted Capacity (MW) | Capacity Factor | |
| Annual Data | ||||||||||||||||||
| 2013 | 2,509.5 | 71.8% | 78,873.5 | 38.8% | 99,006.8 | 90.8% | 4,949.7 | 62.3% | 2,171.6 | 55.9% | 3,525.2 | 24.5% | 552.1 | 17.4% | 59,175.6 | 32.4% | 7,887.9 | 59.0% |
| 2014 | 2,513.3 | 72.0% | 79,582.8 | 37.2% | 98,569.3 | 91.7% | 5,114.6 | 62.7% | 1,994.0 | 54.0% | 6,555.6 | 25.6% | 1,445.3 | 18.3% | 60,587.8 | 34.0% | 8,319.7 | 60.0% |
| 2015 | 2,523.0 | 71.9% | 79,650.8 | 35.7% | 98,614.6 | 92.3% | 5,104.5 | 62.6% | 2,527.7 | 60.8% | 9,521.6 | 25.5% | 1,697.3 | 21.7% | 67,106.2 | 32.2% | 9,024.5 | 59.3% |
| 2016 | 2,516.6 | 71.6% | 79,806.0 | 38.2% | 99,364.8 | 92.3% | 5,099.5 | 62.7% | 2,458.8 | 64.8% | 14,161.4 | 25.0% | 1,757.9 | 22.1% | 74,162.7 | 34.5% | 8,979.8 | 58.3% |
| 2017 | 2,460.4 | 73.2% | 79,698.8 | 43.0% | 99,619.5 | 92.3% | 5,125.6 | 61.8% | 2,375.8 | 62.8% | 21,940.9 | 25.6% | 1,757.9 | 21.8% | 83,355.6 | 34.6% | 8,807.5 | 60.2% |
| 2018 | 2,391.5 | 76.0% | 79,771.9 | 41.9% | 99,605.2 | 92.5% | 5,059.0 | 61.8% | 2,543.9 | 65.4% | 27,143.3 | 25.1% | 1,757.9 | 23.6% | 89,228.5 | 34.6% | 8,760.2 | 60.6% |
| 2019 | 2,535.2 | 69.6% | 79,838.0 | 41.2% | 98,836.7 | 93.4% | 4,786.5 | 62.5% | 2,504.1 | 67.4% | 31,840.8 | 24.3% | 1,758.1 | 21.2% | 97,564.8 | 34.4% | 8,485.0 | 59.0% |
| 2020 | 2,561.5 | 69.1% | 79,810.4 | 40.7% | 97,238.3 | 92.4% | 4,653.8 | 62.5% | 2,275.2 | 64.6% | 39,458.1 | 24.2% | 1,747.9 | 20.6% | 107,387.7 | 35.3% | 8,327.2 | 57.8% |
| 2021 | 2,588.5 | 69.8% | 79,878.4 | 36.0% | 95,802.7 | 92.8% | 4,490.4 | 63.2% | 1,902.5 | 60.9% | 51,219.7 | 24.4% | 1,629.0 | 20.5% | 123,757.1 | 34.4% | 7,959.0 | 59.9% |
| 2022 | 2,616.0 | 69.0% | 80,054.5 | 36.3% | 94,969.9 | 92.7% | 4,402.5 | 60.2% | 1,716.0 | 61.6% | 64,501.0 | 24.4% | 1,480.0 | 23.1% | 136,669.4 | 35.9% | 7,817.6 | 57.9% |
| 2023 | 2,670.6 | 69.4% | 79,982.5 | 35.0% | 95,065.2 | 93.0% | 4,162.6 | 60.4% | 1,871.6 | 53.8% | 77,130.8 | 23.2% | 1,480.0 | 22.1% | 143,443.5 | 33.2% | 7,830.2 | 53.5% |
| Year 2021 | ||||||||||||||||||
| January | 2,571.9 | 69.8% | 79,835.5 | 41.3% | 96,585.8 | 99.9% | 4,515.4 | 65.5% | 1,913.0 | 65.8% | 46,650.9 | 15.5% | 1,739.9 | 6.3% | 117,890.3 | 33.6% | 8,086.1 | 63.0% |
| February | 2,571.9 | 73.9% | 79,840.5 | 37.5% | 96,585.8 | 97.0% | 4,516.0 | 63.4% | 1,913.0 | 62.0% | 46,958.5 | 19.2% | 1,739.9 | 11.5% | 118,996.4 | 32.8% | 8,086.1 | 61.4% |
| March | 2,571.9 | 64.2% | 79,839.3 | 35.7% | 96,585.8 | 88.7% | 4,506.4 | 64.6% | 1,913.0 | 62.7% | 47,653.4 | 25.0% | 1,739.9 | 19.9% | 119,963.2 | 43.0% | 7,943.1 | 60.6% |
| April | 2,571.9 | 68.3% | 79,840.2 | 33.7% | 95,546.4 | 82.1% | 4,506.4 | 63.5% | 1,913.0 | 55.7% | 49,269.7 | 29.4% | 1,739.9 | 26.7% | 121,112.1 | 40.7% | 7,943.1 | 56.7% |
| May | 2,596.7 | 68.5% | 79,845.4 | 39.2% | 95,546.4 | 89.2% | 4,495.2 | 63.3% | 1,913.0 | 57.9% | 49,785.1 | 31.8% | 1,739.9 | 30.2% | 121,846.4 | 36.5% | 7,943.1 | 57.4% |
| June | 2,596.7 | 67.9% | 79,882.3 | 40.8% | 95,546.4 | 96.0% | 4,484.2 | 64.1% | 1,913.0 | 64.4% | 50,448.9 | 31.9% | 1,739.9 | 25.8% | 123,202.6 | 29.5% | 7,943.1 | 61.2% |
| July | 2,596.7 | 69.5% | 79,909.8 | 37.2% | 95,546.4 | 96.8% | 4,485.3 | 63.5% | 1,913.0 | 65.2% | 51,174.9 | 30.5% | 1,559.9 | 22.3% | 124,851.0 | 23.1% | 7,927.9 | 61.5% |
| August | 2,596.7 | 68.8% | 79,907.4 | 34.3% | 95,546.4 | 97.7% | 4,484.7 | 62.2% | 1,888.0 | 63.1% | 52,136.1 | 29.0% | 1,559.9 | 29.6% | 126,118.8 | 28.8% | 7,927.9 | 62.7% |
| September | 2,596.7 | 71.4% | 79,907.4 | 29.6% | 95,546.4 | 93.8% | 4,473.4 | 62.1% | 1,888.0 | 60.7% | 53,619.6 | 27.5% | 1,559.9 | 26.8% | 126,457.2 | 31.7% | 7,927.9 | 60.2% |
| October | 2,596.7 | 67.7% | 79,909.9 | 28.8% | 95,546.4 | 82.2% | 4,481.4 | 60.8% | 1,888.0 | 62.5% | 54,659.6 | 21.6% | 1,479.9 | 19.9% | 126,805.4 | 33.8% | 7,932.9 | 54.8% |
| November | 2,596.7 | 72.4% | 79,909.9 | 33.7% | 95,546.4 | 91.2% | 4,470.5 | 60.2% | 1,888.0 | 53.6% | 55,488.0 | 18.5% | 1,479.9 | 17.9% | 128,224.4 | 38.2% | 7,932.9 | 58.4% |
| December | 2,596.7 | 76.2% | 79,909.8 | 39.6% | 95,546.4 | 99.5% | 4,467.3 | 64.8% | 1,888.0 | 56.8% | 56,506.2 | 13.4% | 1,479.9 | 8.5% | 129,285.2 | 40.8% | 7,923.2 | 61.2% |
| Year 2022 | ||||||||||||||||||
| January | 2,592.8 | 75.1% | 80,036.5 | 40.6% | 95,406.4 | 99.4% | 4,460.5 | 60.7% | 1,664.2 | 64.2% | 60,335.2 | 16.8% | 1,480.0 | 11.3% | 132,415.6 | 37.5% | 7,829.0 | 60.8% |
| February | 2,592.8 | 70.3% | 80,040.6 | 39.6% | 95,406.4 | 96.5% | 4,459.1 | 60.6% | 1,664.2 | 62.8% | 61,350.2 | 21.2% | 1,480.0 | 15.9% | 133,711.4 | 41.6% | 7,829.0 | 62.6% |
| March | 2,592.8 | 65.7% | 80,050.6 | 41.0% | 95,406.4 | 89.0% | 4,444.5 | 59.8% | 1,664.2 | 63.4% | 61,673.4 | 24.4% | 1,480.0 | 23.1% | 133,969.5 | 42.7% | 7,829.0 | 57.4% |
| April | 2,592.8 | 67.1% | 80,054.7 | 34.8% | 95,406.4 | 80.5% | 4,437.0 | 60.0% | 1,733.5 | 56.2% | 62,666.8 | 28.5% | 1,480.0 | 30.1% | 135,080.4 | 46.6% | 7,829.0 | 54.9% |
| May | 2,609.8 | 67.4% | 80,054.7 | 39.2% | 95,427.4 | 89.3% | 4,434.2 | 59.2% | 1,733.5 | 59.9% | 63,122.2 | 30.9% | 1,480.0 | 33.5% | 137,384.2 | 41.1% | 7,811.3 | 55.4% |
| June | 2,609.8 | 67.0% | 80,057.2 | 45.1% | 94,658.9 | 96.4% | 4,434.2 | 61.7% | 1,733.5 | 63.6% | 63,890.6 | 33.2% | 1,480.0 | 34.9% | 137,594.2 | 33.9% | 7,805.5 | 59.5% |
| July | 2,609.8 | 67.1% | 80,057.2 | 41.2% | 94,658.9 | 97.8% | 4,374.4 | 61.7% | 1,733.5 | 63.7% | 65,118.6 | 31.2% | 1,480.0 | 26.2% | 137,993.8 | 28.6% | 7,805.5 | 61.5% |
| August | 2,639.4 | 67.9% | 80,057.2 | 35.5% | 94,658.9 | 97.8% | 4,378.3 | 60.7% | 1,733.5 | 59.5% | 65,707.2 | 28.4% | 1,480.0 | 25.3% | 137,999.4 | 24.0% | 7,817.5 | 60.3% |
| September | 2,661.3 | 68.6% | 80,058.7 | 29.5% | 94,658.9 | 93.5% | 4,369.7 | 59.5% | 1,733.5 | 61.6% | 66,419.3 | 26.5% | 1,480.0 | 26.7% | 138,005.0 | 27.3% | 7,817.5 | 56.4% |
| October | 2,620.5 | 65.3% | 80,059.2 | 24.1% | 94,658.9 | 83.7% | 4,366.5 | 59.2% | 1,733.5 | 59.5% | 67,201.8 | 22.9% | 1,480.0 | 26.4% | 138,005.0 | 31.6% | 7,817.5 | 50.9% |
| November | 2,620.5 | 72.6% | 80,059.2 | 31.0% | 94,658.9 | 91.0% | 4,354.3 | 59.6% | 1,733.5 | 63.2% | 67,739.4 | 16.5% | 1,480.0 | 14.1% | 138,025.0 | 40.8% | 7,817.5 | 56.7% |
| December | 2,648.6 | 74.1% | 80,067.7 | 34.3% | 94,658.9 | 98.1% | 4,322.3 | 60.1% | 1,728.2 | 62.3% | 68,569.5 | 12.5% | 1,480.0 | 9.0% | 139,628.0 | 36.8% | 7,804.5 | 58.8% |
| Year 2023 | ||||||||||||||||||
| January | 2,657.6 | 71.2% | 79,971.6 | 38.2% | 94,598.2 | 100.7% | 4,259.7 | 60.5% | 1,896.8 | 48.4% | 71,639.2 | 14.2% | 1,480.0 | 7.7% | 140,883.2 | 36.3% | 7,933.1 | 57.5% |
| February | 2,657.6 | 72.4% | 79,989.6 | 37.1% | 94,598.2 | 95.7% | 4,158.1 | 59.6% | 1,896.8 | 54.3% | 72,849.9 | 18.6% | 1,480.0 | 10.9% | 141,532.3 | 43.1% | 7,933.1 | 56.2% |
| March | 2,623.3 | 73.2% | 79,989.6 | 35.9% | 94,598.2 | 89.3% | 4,158.1 | 58.3% | 1,866.8 | 54.7% | 73,402.2 | 21.5% | 1,480.0 | 14.0% | 142,245.7 | 40.6% | 7,933.1 | 53.5% |
| April | 2,623.3 | 70.6% | 80,007.4 | 34.4% | 94,598.2 | 83.2% | 4,158.1 | 55.5% | 1,866.8 | 54.7% | 73,948.2 | 26.8% | 1,480.0 | 27.8% | 142,659.5 | 41.2% | 7,933.1 | 48.6% |
| May | 2,684.3 | 66.9% | 79,978.4 | 46.5% | 94,598.2 | 86.9% | 4,158.1 | 61.0% | 1,866.8 | 51.1% | 74,880.6 | 29.5% | 1,480.0 | 27.4% | 142,976.1 | 30.0% | 7,888.1 | 51.9% |
| June | 2,684.3 | 66.5% | 79,979.8 | 37.5% | 94,598.2 | 95.2% | 4,158.1 | 62.3% | 1,866.8 | 54.1% | 75,981.9 | 30.9% | 1,480.0 | 34.6% | 143,730.8 | 26.4% | 7,873.5 | 52.2% |
| July | 2,684.3 | 64.6% | 79,979.8 | 36.9% | 94,598.2 | 99.1% | 4,159.4 | 61.9% | 1,866.8 | 57.0% | 77,601.9 | 30.9% | 1,480.0 | 35.0% | 143,730.8 | 25.9% | 7,788.5 | 54.0% |
| August | 2,671.8 | 63.1% | 79,979.8 | 35.8% | 95,712.2 | 97.9% | 4,155.4 | 61.3% | 1,866.8 | 56.4% | 78,928.8 | 28.7% | 1,480.0 | 28.3% | 144,230.3 | 26.2% | 7,788.5 | 56.3% |
| September | 2,671.8 | 67.4% | 79,977.0 | 29.4% | 95,712.2 | 95.1% | 4,155.4 | 58.0% | 1,866.8 | 52.9% | 79,648.0 | 25.6% | 1,480.0 | 27.7% | 144,334.3 | 27.1% | 7,756.3 | 52.6% |
| October | 2,695.8 | 70.4% | 79,974.9 | 26.3% | 95,712.2 | 86.3% | 4,147.2 | 59.4% | 1,866.8 | 51.2% | 80,606.0 | 22.0% | 1,480.0 | 26.1% | 144,417.5 | 33.1% | 7,756.3 | 47.4% |
| November | 2,695.8 | 73.7% | 79,979.5 | 29.6% | 95,712.2 | 90.3% | 4,148.8 | 61.7% | 1,866.8 | 54.0% | 82,386.8 | 16.7% | 1,480.0 | 15.7% | 145,235.0 | 34.6% | 7,693.1 | 54.5% |
| December | 2,695.8 | 72.9% | 79,983.6 | 32.1% | 95,712.2 | 96.7% | 4,133.2 | 64.5% | 1,866.8 | 56.4% | 83,392.8 | 13.5% | 1,480.0 | 9.9% | 145,232.0 | 34.6% | 7,693.1 | 56.7% |
| 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.' |