The Appalachia region produces the most coal in the U.S.

The Appalachia region, which spans parts of Kentucky, West Virginia, Virginia, and Tennessee, is the leading coal-producing region in the United States. This area is rich in high-quality bituminous coal, which has historically been in high demand for electricity generation and steel production. The region's coal mines are among the oldest in the country, and its vast reserves have made it a critical source of U.S. coal. While coal production in Appalachia has declined in recent years due to competition from natural gas and environmental regulations, it still remains the largest producer of coal in the country.