Total U.S. coal stockpiles had a month-over-month increase of 5.1%, reaching 80 million tons in September 2022. This increase in total U.S. coal stockpiles follows the normal seasonal pattern whereby coal power plants start to increase their stockpiles as the country goes into the autumn months. However, as in previous months, total U.S. coal stockpiles remain at a relatively low historical level.
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 96 days of forward-looking days of burn in August 2022 to 110 days of burn in September 2022. For subbituminous units largely located in the western United States, the average number of days of burn also increased, going from 81 days of burn in August 2022 to 95 days of burn in September 2022.
|September 2022||September 2021||August 2022|
|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.