As a major contributor to the world energy supply, coal represents approximately 23% of the world's primary energy consumption, according to the World Coal Institute. The primary use for coal is to fuel electric power generation. In calendar year 2002, it is estimated that coal generated 51% of the electricity produced in the United States, according to the Energy Information Administration, a statistical agency of the U. S. Department of Energy.
The United States is the second largest coal producer in the world, and is the largest holder of coal reserves in the world. U.S. coal reserves are more plentiful than oil or natural gas, with coal representing approximately 70% of the nation's fossil fuel reserves, according to Energy Ventures Analysis.
U.S. coal production has more than doubled during the last 30 years. One of the primary producing regions is Central Appalachia (23%). All of Quest's coal production comes from the Central Appalachian region.
Coal is used in the United States by utilities to generate electricity, by steel companies to make products with blast furnaces, and by a variety of industrial users.