The two actions
The Environmental Protection Agency published a final rule on 17 September 2026 that repeals most provisions of the 2024 Carbon Pollution Standards for greenhouse gas emissions from fossil fuel-fired electric generating units. The rule takes effect on 16 November 2026. Docket EPA-HQ-OAR-2025-0124 carries this action and a proposal published concurrently with it.
The final rule repeals the emission guidelines for existing fossil fuel-fired steam generating units, the carbon capture and sequestration standards for coal-fired steam generating units undertaking a large modification, and the carbon capture standards for new base load stationary combustion turbines, known as the Phase 2 standards. The agency states that 90 percent carbon capture and sequestration is not the best system of emission reduction for existing long-term coal-fired steam generating units, that its costs are not reasonable, and that the associated degree of emission limitation is not achievable.
The savings the agency models
The regulatory impact analysis estimates a present value of social cost savings of approximately $310 billion in 2024 dollars between 2026 and 2047, discounted to 2025, with an equivalent annualized value of $23 billion. The model behind that figure does not account for changes in environmental quality.
The repeal removes terms the 2024 rule set. Under those standards, existing coal-fired units that planned to cease operation before 1 January 2039 sat in a separate subcategory, with natural gas co-firing at 40 percent of annual heat input as the best system of emission reduction, a presumptive 16 percent reduction in annual emission rate, and a compliance deadline of 1 January 2030. The 2024 rule set a 1 January 2032 compliance date for existing long-term coal-fired steam generating units.
The proposal on the remaining standards
The concurrent supplemental proposal would rescind the Administrator's 2015 findings and determinations and repeal all associated 2015 and 2024 greenhouse gas standards for the source category. The agency proposes that Section 111 of the Clean Air Act gives it no authority to regulate power plant emissions in response to global climate change concerns. Comments are due 2 November 2026, and the agency will hold a virtual public hearing on 1 October 2026.
The proposal rests on an earlier action. The agency rescinded the 2009 findings of endangerment and contribution and repealed the greenhouse gas standards for new motor vehicles and engines in a final rule published on 18 February 2026, on the ground that Section 202(a)(1) does not authorize regulation in response to global climate change concerns.
What an owner can date
Two dates carry the compliance calendar. The power plant rule takes effect on 16 November 2026. The comment window on the remaining standards closes on 2 November 2026, two weeks earlier.
The repeal's financial case rests on the agency's own model, and that model excludes environmental quality. The figure to plan against is the one in the regulatory impact analysis.
The climate record the action was taken against
The Copernicus Climate Change Service reports that August 2026 was the warmest August on record globally, at 16.96 degrees Celsius, which tied with July 2023 as the warmest month in its record. The service puts the month 1.65 degrees Celsius above the 1850-1900 pre-industrial average.
The same service records the extra-polar sea surface temperature at 21.07 degrees Celsius for the month, the highest value for an August and the joint highest across all calendar months, and a daily high of 21.11 degrees Celsius on 24 and 25 August against the previous record of 21.09 degrees set in March 2024.
The column behind the piece
Green Lodging News published an opinion column on 18 September 2026 under the headline "The EPA: Friend or Foe to Travel & Tourism?" Glenn Hasek, the title's publisher and editor, writes that he long counted the agency as a partner to the lodging industry and that it now pursues a mission that runs counter to the goals of the companies he covers. He closes with his own characterisation of the administration's actions.