Twenty-one states sue to restore the power-plant carbon rule the EPA repealed

Twenty-one state attorneys general, all Democrats, sued the Environmental Protection Agency on 1 October over its repeal of greenhouse-gas limits for coal and gas power plants. New York Attorney General Letitia James leads the coalition. The petition was filed in the US Court of Appeals for the District of Columbia Circuit, the court that hears challenges to national EPA rules. The cities of New York, Chicago and Denver, the District of Columbia, and Pennsylvania's governor joined. The EPA told Inside Climate News it does not comment on pending litigation.

The agency repealed the 2024 Carbon Pollution Standards last month. Those standards required coal-fired and gas-fired plants to cut carbon dioxide. The EPA also said it was taking a separate step to make it harder for a later administration to write new greenhouse-gas rules for the same plants. Power plants produce about a quarter of US carbon dioxide emissions, according to James's office. The Associated Press reported that the agency estimated the repeal would spare the industry more than 300 billion dollars in compliance costs.

Who signed, and who did not

The attorneys general are from New York, Arizona, California, Colorado, Connecticut, Delaware, Hawaii, Illinois, Maine, Maryland, Massachusetts, Michigan, Minnesota, New Jersey, New Mexico, North Carolina, Oregon, Rhode Island, Vermont, Washington and Wisconsin. That is 21 states. Pennsylvania is in through its governor, not through an attorney general on the same list. The local governments are the District of Columbia, New York City, Chicago, and the city and county of Denver. Counts that say 25 states and cities are adding those governments to the 21, not finding four more states.

North Carolina Attorney General Jeff Jackson's role drew a note from Jeffrey Robbins, executive director of CleanAIRE North Carolina, who praised the filing as a defence of air quality. North Carolina is the useful edge case. It is not a coastal state in the coalition's usual core, and it still has a large coal and gas fleet. Its signature means the suit is not only New York and California relitigating a rule they liked.

What the petition attacks

James's office said the repeal clears the way for millions of additional tons of greenhouse gases, and that those tons worsen extreme heat, storms, floods and wildfires. The legal attack is on the repeal itself and on the attempt to tie the hands of a future EPA. A court that vacates the repeal would restore the 2024 standards unless the agency writes a new rule that survives review. A court that upholds the repeal leaves the plants under whatever remains of earlier, narrower limits.

The 300 billion dollar figure is the agency's compliance estimate, not a measured saving. It is the number the EPA used to justify the rollback. The coalition's number is the quarter of national carbon dioxide that power plants emit. Neither figure will be adjudicated as a fact in the first procedural orders. Both will be cited. The D.C. Circuit's habit in these cases is to move on standing and on whether the statute lets the agency do what it did, not on a climate-damage model.

The second step, which is the sharper one

Repealing a rule is ordinary when an administration changes. Trying to prevent the next administration from issuing a replacement is not. That second step is the part of last month's EPA action that has no routine analogue. If it survives, a later White House cannot simply republish the 2024 standards. It would have to overcome a bar the current agency is trying to write into the programme. The petition asks the D.C. Circuit to review that structure, not only the deletion of numeric limits.

No hearing date has been set in the public notes of the filing. The EPA's silence is the only response on record. The next document that matters is the agency's brief, which will have to defend both the repeal and the attempt to bind a successor. Until that brief arrives, the checkable facts are the forum, the 21 names, the three cities, the 2024 standards that were taken down, and the agency's own 300 billion dollar estimate of what those standards would have cost.