Regulatory Relief for Certain Stationary Sources to Further Promote American Energy

This proclamation exempts certain coal-fired stationary sources, identified in Annex I, from compliance with the EPA's May 7, 2024 rule amending the Mercury and Air Toxics Standards (MATS) under section 112 of the Clean Air Act for a two-year period beginning July 8, 2027, and concluding July 8, 2029. During the exemption period, those sources remain subject to the MATS compliance obligations as they existed before the 2024 rule. The President determines that the emissions-control technology required by the rule is not commercially available and that the exemption is in the national security interests of the United States.

• Environmental Protection Agency
• Executive Office of the President (for national-security determinations and interagency coordination)
• Department of Energy (grid reliability oversight)
• Department of Defense (major federal energy consumer)

Upon signing; By August 16; By July 8, 2027; By July 8, 2029

July 17, 2025: Proclamation signed; two-year exemption period formally activated. By August 16, 2025: EPA to issue formal guidance to Annex I facilities on their extended deadlines and applicable prior MATS requirements. July 8, 2027 – July 8, 2029: Affected units continue to comply with MATS as it existed before the May 2024 Rule. By July 8, 2029: Affected units must achieve compliance with the revised MATS requirements.

No known legal challenges.