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U.S. Nuclear Generating Statistics

From 1971 to 2020

Year Total Electricity Generation (MWh) Nuclear Generation (MWh) Nuclear Fuel Share (Percent) Capacity Factor (Percent) Summer Capacity (MW)
1971 1,615,853,616 38,104,545 2.4 48.2 9,033
1972 1,752,978,413 54,091,135 3.1 42.5 14,481
1973 1,864,056,631 83,479,463 4.5 53.5 22,683
1974 1,870,319,405 113,975,740 6.1 47.8 31,867
1975 1,920,754,569 172,505,075 9.0 55.9 37,267
1976 2,040,913,681 191,103,531 9.4 54.7 43,822
1977 2,127,447,487 250,883,283 11.8 63.3 46,303
1978 2,209,376,911 276,403,070 12.5 64.5 50,824
1979 2,250,665,025 255,154,623 11.3 58.4 49,747
1980 2,289,600,364 251,115,575 11.0 56.3 51,810
1981 2,297,973,339 272,673,503 11.9 58.2 56,042
1982 2,244,372,488 282,773,248 12.6 56.6 60,035
1983 2,313,445,685 293,677,119 12.7 54.4 63,009
1984 2,419,465,368 327,633,549 13.5 56.3 69,652
1985 2,473,002,122 383,690,727 15.5 58.0 79,397
1986 2,490,470,952 414,038,063 16.6 56.9 85,241
1987 2,575,287,666 455,270,382 17.7 57.4 93,583
1988 2,707,411,177 526,973,047 19.5 63.5 94,695
1989 2,967,305,524 529,354,717 17.8 62.2 98,161
1990 3,037,988,277 576,861,678 19.0 66.0 99,624
1991 3,073,798,885 612,565,087 19.9 70.2 99,589
1992 3,083,882,204 618,776,263 20.1 70.9 98,985
1993 3,197,191,096 610,291,214 19.1 70.5 99,041
1994 3,247,522,388 640,439,832 19.7 73.8 99,148
1995 3,353,487,362 673,402,123 20.1 77.4 99,515
1996 3,444,187,621 674,728,546 19.6 76.2 100,784
1997 3,492,172,283 628,644,171 18.0 71.1 99,716
1998 3,620,295,498 673,702,104 18.6 78.2 97,070
1999 3,694,809,810 728,254,124 19.7 85.3 97,411
2000 3,802,105,043 753,892,940 19.8 88.1 97,860
2001 3,736,643,653 768,826,308 20.6 89.4 98,159
2002 3,858,452,252 780,064,087 20.2 90.3 98,657
2003 3,883,185,205 763,732,695 19.7 87.9 99,209
2004 3,970,555,289 788,528,387 19.9 90.1 99,628
2005 4,055,422,744 781,986,365 19.3 89.3 99,988
2006 4,064,702,228 787,218,636 19.4 89.6 100,334
2007 4,156,744,724 806,424,753 19.4 91.8 100,266
2008 4,119,387,760 806,208,435 19.6 91.1 100,755
2009 3,950,330,927 798,854,585 20.2 90.3 101,004
2010 4,125,059,890 806,968,301 19.6 90.9 101,167
2011 4,100,140,927 790,204,367 19.3 88.9 101,419
2012 4,047,765,260 769,331,249 19.0 86.4 101,885
2013 4,065,964,068 789,016,473 19.4 89.9 99,6911
2014 4,093,606,006 797,165,982 19.5 91.7 99,1812
2015 4,077,600,939 797,177,877 19.6 92.2 98,672
2016 4,076,674,983 805,693,948 19.8 92.1 99,7943
2017 4,034,270,560 804,949,635 20.0 92.2 99,635
2018 4,178,277,345 807,084,477 19.3 92.3 100,0404
2019 4,127,855,212 809,409,262 19.6 93.4 99,5955
2020 4,009,085,003 789,918,631 19.7 92.5 98,1706
Notes:
1  Kewaunee retired in May 2013, reducing the summer capacity of the u.s. commercial nuclear fleet to 99,125 MWe.

2  Vermont Yankee retired in December 2014, reducing the summer capacity of the u.s. commercial nuclear fleet to 98,569 MWe.

3  Fort Calhoun retired in October 2016, reducing the summer capacity of the u.s. commercial nuclear fleet to 99,316 MWe.

4  Oyster Creek retired in September 2018, reducing the summer capacity of the u.s. commercial nuclear fleet to 99,432 MWe.

5  Pilgrim and Three Mile Island Unit 1 retired in May and September 2019, respectively, reducing the summer capacity of the U.S. commercial nuclear fleet to 98,119 MWe.
6 Indian Point 2 and Duane Arnold retired in April and August 2020, respectively, reducing the summer capacity of the U.S. commercial nuclear fleet to 96,557 MWe. 

Sources:  U.S. Energy Information Administration
Updated: May 2021

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