EPA repeals power-plant greenhouse-gas limits, setting up court fight
The Environmental Protection Agency said Monday, September 14, 2026, that it is repealing Biden-era greenhouse-gas standards for coal- and natural-gas-fired power plants, setting up a legal and policy fight over climate authority, electricity planning and public-health protections.
The action targets the 2024 power-plant carbon-pollution standards issued under Section 111 of the Clean Air Act. Those standards set carbon-dioxide limits for new natural-gas combustion turbines and emissions guidelines for existing coal-, oil- and gas-fired steam-generating units.
What changes for power plants
After the final repeal is published in the Federal Register and takes effect, affected facilities will no longer be required to meet the Biden-era greenhouse-gas limits. That could give utilities more flexibility when deciding whether to keep older fossil-fuel units operating, modify them or invest in replacement generation.
The EPA says the change is intended to reduce compliance costs and preserve generating capacity as electricity demand grows, including demand linked to data centers and advanced manufacturing. Agency officials say utilities should be able to make generation decisions based more heavily on local grid conditions and customer needs.
Those arguments do not guarantee lower household electric bills or prevent blackouts. Consumer costs and reliability will still depend on fuel prices, transmission capacity, permitting, utility investment and regional grid conditions.
The cost estimates use different calculations
The EPA’s 2025 proposal estimated up to $19 billion in regulatory-cost savings over roughly two decades. That figure came from the agency’s regulatory analysis and reflected a defined analysis period, assumptions and accounting method.
In its September 14 announcement, the EPA said the final repeal removes more than $300 billion in industry costs. The two figures should not be treated as interchangeable. They were presented in different documents and may cover different time periods, assumptions or categories of costs.
Both figures are agency estimates. They are not savings already received by utilities or consumers, and the larger announcement figure does not by itself establish what electricity customers will pay.
Other pollution rules remain
The repeal is focused on greenhouse-gas standards. It does not automatically eliminate other Clean Air Act requirements for pollutants such as sulfur dioxide, nitrogen oxides, mercury, lead or particulate matter.
Power plants may therefore remain subject to separate pollution controls, permits, monitoring obligations and other requirements unless those rules are changed through separate agency actions.
Why opponents object
Environmental and public-health groups argue that removing the carbon standards could allow more greenhouse-gas pollution from fossil-fuel plants and increase risks for communities near those facilities. The groups are expected to challenge the repeal in court.
The legal dispute is likely to address how Section 111 applies to greenhouse-gas emissions, whether the EPA’s interpretation of its authority is lawful and whether the agency adequately considered environmental, health and energy consequences. Opponents could also seek a court order pausing the repeal while litigation proceeds.
The power sector remains a major source of U.S. climate pollution. EPA background materials identify existing coal-fired plants as the largest source of greenhouse gases within the power sector and identify new natural-gas combustion turbines as significant new sources.
A separate proposal is not final
The EPA also announced a related proposal intended to make it harder for future administrations to regulate greenhouse-gas emissions from power plants. That measure is not final and should not be confused with Monday’s completed repeal.
The next steps are Federal Register publication, the effective date and likely litigation. Utilities and state regulators will then have to decide how much weight to give the changed federal rules as they plan generation, retirements and new power projects. The repeal’s long-term effect may depend on court decisions and on whether a future administration seeks to regulate power-plant greenhouse-gas emissions again.
Sources
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