Electric Power Monthly

Data for February 2014  |  Release Date: April 22, 2014  |  Next Release: May 21, 2014 
|  full report

Previous Issues

SAS Output
Table 6.7.B. Capacity Factors for Utility Scale Generators Not Primarily Using Fossil Fuels, January 2008-February 2014

Period Nuclear Conventional Hydropower Wind Solar Photovoltaic Solar Thermal Landfill Gas and Muncipal Solid Waste Other Biomass Including Wood Geothermal
Annual Factors
2008 91.1% 37.2% 31.7% 22.5% 19.5% 69.9% 66.5% 74.7%
2009 90.3% 39.6% 28.1% 20.6% 23.6% 70.2% 62.1% 73.3%
2010 91.1% 37.6% 29.8% 20.3% 24.5% 70.8% 57.8% 71.9%
2011 89.1% 45.9% 32.1% 19.1% 23.9% 70.0% 56.3% 71.8%
2012 86.1% 39.6% 31.8% 20.3% 23.8% 68.0% 57.3% 68.2%
2013 90.1% 38.1% 32.3% 19.4% 17.8% 69.6% 50.8% 66.0%
2012
January 95.8% 39.0% 39.0% 9.3% 2.5% 65.8% 60.1% 67.4%
February 90.3% 36.6% 33.5% 12.1% 15.1% 66.0% 60.1% 68.2%
March 81.7% 43.8% 39.0% 17.3% 24.2% 65.9% 55.1% 66.9%
April 76.4% 46.0% 36.5% 22.2% 31.1% 66.7% 47.5% 67.6%
May 82.1% 48.5% 34.5% 27.1% 32.3% 68.1% 51.7% 67.7%
June 89.0% 46.7% 33.6% 28.2% 43.7% 69.9% 59.8% 67.6%
July 91.3% 45.0% 23.6% 26.3% 39.8% 70.8% 61.6% 67.7%
August 91.8% 38.9% 22.4% 23.1% 35.2% 68.7% 63.2% 66.8%
Sept 88.0% 30.8% 23.8% 22.8% 34.0% 67.7% 59.4% 68.9%
October 78.8% 27.9% 32.6% 20.3% 16.2% 67.3% 54.1% 68.1%
November 77.3% 32.6% 30.0% 16.5% 7.6% 68.7% 57.1% 70.8%
December 90.5% 38.8% 34.1% 15.9% 3.5% 70.7% 57.7% 70.6%
2013
January 94.2% 41.9% 33.2% 13.1% 2.8% 65.8% 53.1% 69.1%
February 90.5% 37.4% 34.9% 17.1% 12.2% 64.0% 51.8% 68.5%
March 83.6% 34.2% 35.5% 19.0% 18.2% 69.8% 52.2% 69.0%
April 77.7% 43.0% 40.4% 19.3% 22.3% 69.6% 34.4% 66.1%
May 83.4% 47.8% 36.9% 19.9% 23.0% 73.4% 46.9% 64.7%
June 93.2% 47.3% 32.3% 22.1% 30.3% 74.4% 48.9% 65.0%
July 95.8% 45.2% 25.3% 20.5% 27.3% 73.1% 53.1% 66.0%
August 96.9% 36.0% 21.8% 21.2% 30.1% 70.7% 61.0% 64.9%
Sept 92.3% 29.0% 27.5% 22.4% 25.8% 69.1% 54.2% 66.2%
October 85.8% 28.9% 31.2% 22.8% 16.7% 67.3% 48.9% 67.2%
November 91.2% 30.7% 37.1% 18.4% 9.0% 68.3% 52.8% 61.1%
December 96.7% 35.2% 31.6% 16.6% 6.3% 69.9% 51.5% 65.0%
2014
January 99.2% 35.6% 40.1% 17.3% 5.4% 63.5% 55.1% 62.8%
February 94.1% 32.1% 34.3% 18.7% 8.2% 61.4% 53.7% 62.2%

Values for 2012 and prior years are final. Values for 2013 and 2014 are preliminary.
Notes: Solar Thermal Capacity Factors include generation from plants using concentrated solar power energy storage.
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.'