Figures for comparison:

A nuclear power station producing 1000 Megawatts creates 23 tons of waste a year which is actively managed. It produces no carbon dioxide, sulphur dioxide or nitrogen oxides.

A similar coal-fired power station producing 1000 megawatts creates 300,000 tons of crude ash a year. In addition it creates 6000lbs of nitrogen oxides, 13000lbs of sulphur dioxide and 2.2 million lbs of carbon dioxide which is blasted into the air. That's 1100 tons of gas.