Where in the United States are coal bed methane resources concentrated enough for commercial production?
About 13% of land in the lower 48 states has some coal under it, and all coal deposits have methane and water as a byproduct of the coal formation process (coalification). The bulk of U.S. coal bed methane (CBM) resources are located in 13 major basins. About 56% of the production has come from the Rocky Mountains.
