Total U.S. coal stockpiles had a month-over-month decrease of 5.7%, reaching 122 million tons in July 2023. This decrease in total U.S. coal stockpiles follows the normal seasonal pattern whereby coal power plants use up their stockpiles during the peak summer months when demand for electricity generation is higher.
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 the previous month, going from 137 days of forward-looking days of burn in June 2023 to 144 days of burn in July 2023. For subbituminous units largely located in the western United States, the average number of days of burn also increased, going from 134 days of burn in June 2023 to 143 days of burn in July 2023.
|July 2023||July 2022||June 2023|
|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|
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.