Cleaning up the dirtiest coal-fired power plants

click to enlarge The Environmental Defense Fund reports that the top 25 emitters of mercury, a potent neurotoxin and a nasty by-product of coal-fired electricity generation, contribute only eight percent of the U.S. electric supply but account for nearly a third of all mercury emissions by the U.S. electricity sector overall. - Thinkstock
Thinkstock
The Environmental Defense Fund reports that the top 25 emitters of mercury, a potent neurotoxin and a nasty by-product of coal-fired electricity generation, contribute only eight percent of the U.S. electric supply but account for nearly a third of all mercury emissions by the U.S. electricity sector overall.

The Environmental Defense Fund reports that the top 25 emitters of mercury, a potent neurotoxin and a nasty by-product of coal-fired electricity generation, contribute only eight percent of the U.S. electric supply but account for nearly a third of all mercury emissions by the U.S. electricity sector overall.
  • Thinkstock
  • The Environmental Defense Fund reports that the top 25 emitters of mercury, a potent neurotoxin and a nasty by-product of coal-fired electricity generation, contribute only eight percent of the U.S. electric supply but account for nearly a third of all mercury emissions by the U.S. electricity sector overall.

Courtesy of: EarthTalk®
E — The Environmental Magazine

Dear EarthTalk: Is it true that only a handful of outdated coal-burning power plants generate a sizable amount of the mercury pollution generated in the United States? If so, is anything being done to clean these sites up or shut them down? — Frank Pearson, Wichita, KS

Our nation’s coal-fired power plants are increasingly being retrofitted with technologies to mitigate the output of various forms of pollution. But a number of bad apples do continue to cause more than their fair share of mercury emissions. This past March the Environmental Defense Fund (EDF), a leading non-profit, released a report showing that the top 25 emitters of mercury, a potent neurotoxin and a nasty by-product of coal-fired electricity generation, contribute only eight percent of the U.S. electric supply. At the same time, these power plants, which have failed to install readily available pollution controls already widely in use by other plants, account for nearly a third of all mercury emissions by the American electricity sector overall.