Electric Power Monthly

Data for January 2015  |  Release Date: March 27, 2015  |  Next Release: April 27, 2015 
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Table 6.7.A. Capacity Factors for Utility Scale Generators Primarily Using Fossil Fuels, January 2013-January 2015

  Coal Natural Gas Petroleum
Period
Natural Gas Fired Combined Cycle Natural Gas Fired Combustion Turbine Steam Turbine Internal Combustion Engine Steam Turbine
Petroleum Liquids Fired Combustion Turbine
Internal Combustion Engine
Annual Factors
2013 59.7% 48.2% 4.9% 10.6% 6.1% 12.1% 0.8% 2.2%
2014 60.9% 47.8% 4.8% 10.0% NA 12.8% 1.1% 7.1%
2013
January 61.2% 46.3% 3.6% 7.3% 4.6% 10.0% 0.7% 2.7%
February 60.6% 46.7% 3.4% 6.7% 4.7% 9.7% 0.4% 2.0%
March 57.7% 44.1% 4.0% 6.8% 5.7% 9.6% 0.3% 1.9%
April 51.3% 40.4% 4.3% 7.3% 6.1% 11.6% 0.6% 2.4%
May 52.9% 41.5% 4.5% 9.5% 5.2% 13.0% 0.7% 2.1%
June 63.4% 50.9% 5.1% 14.7% 6.9% 15.4% 0.8% 1.7%
July 67.9% 58.3% 8.5% 18.6% 8.4% 17.5% 2.1% 2.3%
August 66.3% 60.2% 6.8% 17.6% 8.5% 14.4% 0.9% 2.2%
Sept 61.2% 52.6% 5.6% 14.0% 6.7% 14.1% 1.3% 2.0%
October 54.4% 45.4% 3.9% 8.5% 5.5% 12.7% 0.7% 2.0%
November 56.2% 44.9% 3.9% 7.1% 4.5% 7.3% 0.6% 2.2%
December 63.7% 47.1% 4.6% 8.5% 6.1% 10.2% 0.7% 2.7%
2014
January 70.9% 46.9% 6.4% 9.4% NA 19.4% 3.7% 7.3%
February 71.6% 42.2% 4.2% 8.8% NA 12.2% 0.8% 6.3%
March 61.4% 39.5% 4.4% 6.9% NA 13.7% 1.1% 5.8%
April 50.9% 40.3% 3.4% 6.9% NA 9.5% 0.5% 4.9%
May 53.8% 44.3% 4.8% 9.5% NA 10.3% 0.7% 9.5%
June 64.5% 50.7% 5.1% 11.4% NA 15.3% 1.0% 7.3%
July 68.0% 57.0% 5.8% 14.6% NA 16.1% 1.1% 8.8%
August 67.5% 60.5% 6.1% 16.2% NA 15.3% 1.5% 8.4%
Sept 59.2% 54.8% 5.2% 12.2% NA 13.7% 0.8% 8.1%
October 50.8% 48.5% 4.7% 10.3% NA 9.7% 0.8% 6.5%
November 56.1% 42.8% 4.1% 7.6% NA 7.5% 0.9% 6.4%
December 56.8% 45.6% 3.3% 5.7% NA 10.7% 0.5% 5.8%
2015
January 62.0% 52.0% 3.8% 6.3% NA 12.4% 0.6% 8.0%

Values for 2013 and prior years are final. Values for 2014 and 2015 are preliminary. NA = Not Available
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.'