Clean coal technologies are several generations of technological advances that have led to more efficient combustion of coal with reduced emissions of sulfur dioxide and nitrogen oxide.
Coal is the dirtiest of all fossil fuels. When burned, it produces emissions that contribute to global warming, create acid rain and pollute water. With all of the hoopla surrounding nuclear energy, hydropower and biofuels, you might be forgiven for thinking that grimy coal is finally on its way out.
But coal is no sooty remnant of the Industrial Revolution it generates half of the electricity in the United States and will likely continue to do so as long as it’s cheap and plentiful
Source: Energy Information Administration
