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Electricity Monthly Update

With Data for May 2026 Release Date: July 23, 2026 Next Release Date: August 26, 2026

Electric Power Sector Coal Stocks: May 2026


Total U.S. coal stockpiles increased by 2.9% to 120 million tons compared to the previous month. This month-over-month increase in coal stockpiles is normal during May when coal power plants begin to build up their stockpiles for use during the summer months when electricity demand is higher.

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 decreased from the previous month, going from 104 days of forward-looking days of burn in April 2026 to 101 days of burn in May 2026. For subbituminous units largely located in the western United States, the average number of days of burn also decreased, going from 120 days of burn in April 2026 to 114 days of burn in May 2026.

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

    May 2026 May 2025   April 2026  
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 893 68 1,691 203 -47.2% 819 87 9.1%
  Subbituminous . . . . . . . .
South Bituminous 19,736 101 18,327 96 7.7% 18,572 102 6.3%
  Subbituminous 6,607 82 5,619 73 17.6% 6,321 89 4.5%
Midwest Bituminous 9,248 92 10,253 100 -9.8% 8,746 96 5.7%
  Subbituminous 33,402 100 30,092 91 11.0% 32,477 109 2.8%
West Bituminous 2,107 260 2,804 155 -24.9% 2,022 262 4.2%
  Subbituminous 32,247 150 31,380 133 2.8% 31,490 150 2.4%
U.S. Total Bituminous 31,984 101 33,076 104 -3.3% 30,160 104 6.0%
  Subbituminous 72,256 114 67,091 104 7.7% 70,289 120 2.8%

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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