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Electricity Monthly Update

With Data for August 2017  |  Release Date: October 24, 2017  |  Next Release Date: November 27, 2017
Re-release date: October 25, 2017   |   Revision

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Electric Power Sector Coal Stocks: August 2017

 



In August 2017, U.S. coal stockpiles decreased to 144 million tons, down 2.7% from the previous month. This decrease in total coal stockpiles is a normal occurence during the summer months when demand for electricity is greater.

Days of burn




The average number of days of burn held at electric power plants is a forward-looking estimate of coal supply given a power plant's current stockpile and past consumption patterns. For bituminous units largely located in the eastern United States, the average number of days of burn increased from 76 days of burn in July 2017 to 89 days of forward-looking days of burn in August 2017. For subbituminous units largely located in the western United States, the average number of days of burn increased from 72 days in July 2017 to 79 days in August 2017.

Coal stocks and average number of days of burn for non-lignite coal by region (electric power sector)

  August 2017   August 2016   July 2017  
Zone Coal Stocks (1000 tons) Days of Burn   Stocks (1000 tons) Days of Burn % Change of Stocks Stocks (1000 tons) Days of Burn % Change of Stocks
Northeast Bituminous 4,143 88   5,312 98 -22.0% 3,915 72 5.8%
  Subbituminous 129 139   153 131 -15.6% 129 166 0.0%
South Bituminous 27,973 91   27,906 84 0.2% 28,498 75 -1.8%
  Subbituminous 5,362 59   5,899 67 -9.1% 5,709 55 -6.1%
Midwest Bituminous 13,187 83   16,830 99 -21.6% 13,750 76 -4.1%
  Subbituminous 36,407 80   40,679 82 -10.5% 38,044 73 -4.3%
West Bituminous 5,457 90   5,715 79 -4.5% 5,576 82 -2.1%
  Subbituminous 26,995 83   31,529 92 -14.4% 28,432 74 -5.1%
U.S. Total Bituminous 50,760 89   55,763 89 -9.0% 51,738 76 -1.9%
  Subbituminous 68,894 79   78,259 84 -12.0% 72,313 72 -4.7%

Source: U.S. Energy Information Administration

NOTE: Stockpile levels shown above reflect a sample of electric power sector plants, which were used to create the days of burn statistics. These levels will not equal total electric power sector stockpile levels.

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