On June 11, 2025, the U.S. Environmental Protection Agency ("EPA") announced a proposed rule to repeal key amendments to the 2024 Mercury and Air Toxics Standards ("MATS") for coal- and oil-fired electric utility steam...more
The Environmental Protection Agency ("EPA") has announced a new proposed rule that would strengthen the National Emission Standards for Hazardous Air Pollutants ("NESHAP") for Coal- and Oil- Fired Electric Utility Steam...more
This is the eighth issue of WilmerHale’s 10-in-10 Hot Topics in Energy Series. Over the course of 10 weeks, our attorneys will share insights on current and emerging issues affecting the US energy sector. Attorneys from...more
United States Senator Tom Carper (D-Del.) sent a December 13th letter to the U.S. Environmental Protection Agency (“EPA”) Office of Information and Regulatory Affairs: . . . expressing grave concerns regarding the...more
Earlier today the US Supreme Court issued a 5 to 4 decision in Michigan v. EPA that struck down the U.S. Environmental Protection Agency’s (EPA) Mercury and Air Toxics Standard (MATS) rule. The MATS rule imposes stringent...more