EPA Repeals Power Plant Carbon Standards and Proposes Ending Federal Greenhouse Gas Limits on the Power Sector

What Happened

On September 14, 2026, EPA Administrator Lee Zeldin used a G20 energy ministers' meeting in Houston to announce two actions. The first, a final rule, repeals most of the Biden administration's 2024 carbon pollution standards for fossil-fuel-fired power plants. According to an analysis by the law firm Jackson Walker, the repeal eliminates the 90% carbon-capture mandate for existing coal units (with a 2032 deadline), the 40% natural-gas co-firing requirement for medium-term coal units, carbon-capture standards for new baseload gas turbines, and requirements for existing gas- and oil-fired steam units. Phase 1 efficiency standards for new combustion turbines and the 2015 coal-unit standards survive. The second action proposes to rescind all remaining greenhouse gas standards for the power sector, on the theory that Section 111 of the Clean Air Act never authorized EPA to regulate power plants for climate purposes.

Zeldin called it "the largest deregulatory action for the United States power sector in American history." EPA projected about $310 billion in compliance savings from the final repeal and $370 million more from the proposed rescission. Its announcement asserted that "models continue to show that GHG emissions from power plants have no material impact on global climate change," that "if all carbon dioxides were eliminated tomorrow, there would be no meaningful climate impact," and that potential public-health harms are "too uncertain, conjectural, remote, and convoluted to tie specifically to the U.S. power sector."

The power sector accounts for about 24% of U.S. greenhouse gas emissions, the second-largest source after transportation, ABC News reported. The Biden administration had estimated that the 2024 standards would prevent on the order of a billion metric tons of greenhouse gas emissions through 2047, according to Ballotpedia.

Health and Climate Stakes

EPA did not quantify the health benefits forgone by the repeal. The Associated Press reported that the rules targeted by the Trump EPA — a broader set that includes but is not limited to these standards — "could prevent an estimated 30,000 deaths and save $275 billion each year they are in effect," based on an AP examination of the agency's own prior assessments and other research. That figure is a projection for the full slate of targeted rules and should not be read as the effect of this action alone.

Critics rejected EPA's scientific premise. "Everyone will be affected by their actions, but the most vulnerable among us, our kids and grandkids, will suffer the most," said former EPA Administrator Gina McCarthy. The Natural Resources Defense Council called the repeal "a clear violation of the Clean Air Act," and NRDC and the Sierra Club said they would challenge it in court. The Fifth National Climate Assessment (2023) found that climate change threatens health, homes, public services and economies across the United States.

Legal Analysis

The core domestic question is whether EPA can lawfully conclude that the largest stationary source category of greenhouse gases need not be regulated under Section 111 — a question tied to the agency's earlier rescission of the 2009 endangerment finding, documented in the related entry on environmental rollbacks. Internationally, Article 4(2)(a) of the UN Framework Convention on Climate Change, which the United States ratified, commits developed-country parties to adopt national policies limiting greenhouse gas emissions; the related entry documents the administration's withdrawal from that convention. The right to health under Article 12 of the ICESCR, signed but not ratified by the United States, includes the improvement of environmental hygiene.

Why This Entry Is Rated Major

This is an executive action that removes binding limits on a quarter of national greenhouse gas emissions on the strength of an agency claim — that power-plant emissions have "no material impact" on climate — at odds with the scientific record the agency itself previously relied on. The harms are real but diffuse and projected rather than yet observed in identifiable victims, which is why the rating is "major" rather than "severe." The action is subject to judicial review.