States challenge EPA repeal of power plant emissions rules
Twenty-one states and the District of Columbia sued the EPA in the D.C. Circuit on Oct. 1 over the agency's partial repeal of greenhouse gas requirements for fossil-fuel power plants. New York Attorney General Letitia James is leading the challenge, which also includes Pennsylvania's governor and the mayors of New York City, Chicago, and Denver. The EPA finalized the repeal on Sept. 14, removing parts of the 2024 Carbon Pollution Standards, while the states argue the agency violated the Clean Air Act.
The suit was filed in the D.C. Circuit on Oct. 1 by 21 states, D.C., New York Attorney General Letitia James, Pennsylvania Gov. Josh Shapiro, and the mayors of New York City, Chicago, and Denver. They seek to vacate EPA's Sept. 14 partial repeal and restore the 2024 standards.
EPA removed three elements of the Biden-era Carbon Pollution Standards, including guidelines for existing fossil-fuel steam units and carbon capture mandates for some new gas plants. Administrator Lee Zeldin said the rollback would save $310 billion from 2026 to 2047 and lower regulatory costs while supporting reliable, affordable electricity. The states claim Clean Air Act violations.
The litigation may shape how far federal regulators can go in curbing power-sector greenhouse gases. If the repeal stands, plant operators could face fewer compliance costs, while residents in affected states may see different air-quality and energy-price outcomes. If courts restore the standards, utilities might need to invest in carbon controls sooner. The case could also influence future disputes over EPA authority and state-federal balance.