As of April 8, 2025, the White House issued an executive order to amend a prior EPA rule titled National Emissions Standards for Hazardous Air Pollutants: Coal- and Oil-Fired Electric Utility Steam Generating Units Review of the Residual Risk and Technology Review, 89 FR 38508, which reformed the existing Mercury and Air Toxics Standards (MATS) rule to make it more stringent. [1] The order states that coal-fired generation is necessary as an affordable means to promote energy security and the prior EPA rule represents an “unattainable” emissions control standard that jeopardizes the use of coal. The order goes on to discuss how the rule places severe burdens on coal-fired power plants by requiring compliance with standards for emissions-control technologies that do not yet exist in a “commercially viable form.” The order suggests that the current compliance timeline of the rule raises the risk of the shutdown of many coal-fired power plants, which threatens economic and energy security. It also states that certain stationary sources subject to the rule are exempt from compliance for 2 years beyond the compliance date.
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