What are the advantages of using coal?
A. Coal is plentiful. In fact, it is the United States most abundant fossil fuel. According to the U.S. Geological Survey, the United States has approximately 1.7 trillion tons of known coal reserves. They estimate there may be as much as four trillion tons of undiscovered coal deposits (around 250 years worth). In part because of the availability of coal in the United States, coal prices have been relatively stable. That availability and price stability play an important role in helping Duke Energy support economic growth in the Carolinas with an adequate, reliable and low-cost supply of electricity.