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Trump EPA to weaken rule limiting harmful mercury, air toxics from coal plants

The EPA rollback reverts mercury emission limits to 2012 levels, saving an estimated $670 million but risking increased toxic pollution from coal-fired power plants, critics warn.

  • On Friday, the U.S. Environmental Protection Agency announced it weakened limits on mercury and other toxic emissions from coal- and oil-fired power plants at a Louisville, Kentucky coal plant.
  • Reverting to the 2012 MATS, the agency returns standards that cut mercury emissions by nearly 90%, following a March deregulatory push and an earlier this month climate finding revocation.
  • EPA Deputy Administrator David Fotouhi said the change will save hundreds of millions of dollars, citing $670 million in projected savings, and the rule extends deadlines and grants exemptions including Powder River Basin plants such as Laramie River and Dry Fork Station.
  • Environmental and health advocates warned that toxic emissions from coal plants harm brain development in young children and increase cancer and asthma risks, the Center for American Progress said.
  • Industry and administration argued the rollback preserves baseload power and grid reliability while coal still supplies roughly 16% of U.S. electricity, with effects on Wyoming unclear as President Donald Trump recently hosted coal miners.
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politicopro.com broke the news in on Thursday, February 19, 2026.
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