A coalition of states and cities has filed suit over the U.S. Environmental Protection Agency's decision to eliminate a rule that limits emissions from power plants, escalating the legal fight over federal climate regulation.

The lawsuit, reported by the Niagara Gazette, targets the EPA's repeal of emissions limits governing the power sector under the Trump administration. The challengers argue the agency's move violates federal law and abandons binding obligations to curb greenhouse gas output from one of the nation's largest stationary sources.

The repealed rule had established emissions standards for existing and new fossil-fueled power plants, framing coal and gas generation within a regulatory compliance framework that operators and the scrap-consuming electric-arc-furnace segment had tracked closely, given the interconnectedness of grid decarbonization targets and industrial energy inputs.

For the recycling and metals sector, the stakes are material. Repeal of the emissions rule alters the regulatory calculus for grid-dependent secondary processing operations, shifting the competitive and compliance landscape that circular-economy commitments — many of them tied to renewable or lower-carbon power procurement — assume as their baseline.

The plaintiffs, a group of state attorneys general and municipal governments, contend that the EPA cannot lawfully withdraw emissions limits without satisfying statutory requirements under the Clean Air Act. The agency has defended the repeal as part of a broader deregulatory agenda.

Litigation now moves to the federal courts, where judges will determine whether the repeal stands or the emissions limits are reinstated. That decision constitutes the regulatory milestone that will define compliance obligations for power plant operators — and the emissions baseline against which industrial energy users measure their own commitments — in the months ahead.