DOE "FactSheet" -- Notice Emphasis on Fossil Fuels
Fossil fuels will remain the mainstay of world energy production well into the 21st century. Coal, for example, is abundant, comparatively inexpensive, and geographicallydiverse. The international Energy Agency estimates that overall world coal use will increase by about 50 percent between now and 2030, and by nearly 67 percent for power generation, mostly in developing countries.
The United States has an estimated 250-year supply of coal. In terms of energy value (Btus), coal constitutes approximately 95 percent of U.S. fossil energy reserves. Because of its abundance and low cost, coal now accounts for more than half of the electricity generated in the United States.
Availability of fossil fuels to provide clean, affordable energy is essential for the prosperity and security of the United States. However, increased concentrations of carbon dioxide (CO2) due to increased carbon emissions are expected. To stabilize and ultimately reduce concentrations of
this greenhouse gas, it will be necessary to employ new technologies, such as carbon sequestration, to capture carbon dioxide and other greenhouse gas emissions before they are released into the atmosphere.