"Full Cost Accounting for the Life Cycle of Coal", the first study to look at the major costs of coal from extraction to combustion. It finds that coal costs:
Add it all up:
coal costs the nation half a trillion dollars a year - $513,800,000,000 each year!
[Source: "Full Cost Accounting for the Life Cycle of Coal." Dr. Paul Epstein, associate director of the Harvard Center for Health and the Global Environment. Annals of the New York Academy of Sciences, 2011.]
"The carbon dioxide (CO2) emissions from gas-fired power plants are significant. A gas-fired power plant produces roughly half of the climate-related damages per unit of energy compared to a coal-fired plant, from 0.5 to 1.5 to 5 cents per kWh, corresponding to damages of $10, $30 and $100 per ton of CO2-eq."
[Source: “Hidden Costs of Energy - Unpriced Consequences of Energy Production and Use.” The National Academy of Sciences, 2009.]