Coal production is the amount of coal that is mined and sent to market. In 2010, the amount of coal produced at U.S. coal mines was 1,085.3 million short tons. Coal is mined in 26 states. Wyoming mines the most coal, followed by West Virginia, Kentucky, Pennsylvania, and Montana. Kentucky ranks third in the Nation in coal production. It accounts for about one-tenth of U.S. coal production and nearly one-fourth of U.S. production east of the Mississippi River.
Amid historically low natural gas prices and the warmest March ever recorded in much of the United States, coal’s share of total net generation dropped to 34%—the lowest level since at least January 1973.