EPA Repeals 2024 Greenhouse Gas Limits for Power Plants
The U.S. Environmental Protection Agency has finalized the repeal of its 2024 greenhouse gas regulations for coal- and gas-fired power plants. The final action was announced Sept. 14, 2026, alongside a separate proposal to rescind all remaining greenhouse gas requirements for the power sector. EPA
The rules at issue set limits on greenhouse gases, the heat-trapping gases released when fossil fuels are burned, from coal and natural gas plants. Under the Biden-administration policy now being unwound, those plants had to cut most of those emissions by 2039 or close. Engadget
The legal tool is Section 111 of the Clean Air Act, the section that lets EPA set pollution standards for categories of stationary sources such as power plants. On June 11, 2025, EPA Administrator Lee Zeldin proposed to repeal all greenhouse gas standards for the power sector under that authority. The Federal Register titled that action "Repeal of Greenhouse Gas Emissions Standards for Fossil Fuel-Fired Electric Generating Units." Federal Register
The scope is specific. EPA proposed that greenhouse gas emissions from fossil fuel-fired power plants do not contribute significantly to dangerous air pollution. If finalized, that finding would remove the legal basis required for Section 111 standards for those units.
EPA is also advancing a wider claim, that it cannot regulate power plant emissions under the Clean Air Act because greenhouse gas emissions do not harm public health or the environment. That position conflicts with the 2009 Endangerment Finding, the formal EPA determination that several greenhouse gases endanger health and welfare and which has supported EPA authority to regulate those emissions.
The stakes reach beyond power plants. Action against the health finding behind greenhouse gas rules would end limits on vehicle emissions as well as power plant emissions, according to July 2025 reporting. Reuters
A parallel proposal would change emissions visibility. On Sept. 12, 2025, EPA proposed to end mandatory greenhouse gas reporting. If finalized, that proposal would remove reporting duties for most large facilities and for all fuel and industrial gas suppliers. Reuters
The regulatory shift follows a series of international withdrawals. The United States left the Paris Agreement in 2025 and withdrew from multiple other international climate-focused organizations earlier in 2026. United Nations researchers have warned that greenhouse gas emissions risk causing more lethal and damaging severe weather events.
The broader context here is regulatory baseline, not atmospheric chemistry. For operators, the near-term question is what they must do under Section 111 and, separately, what they must measure under the reporting program. For engineers building monitoring, verification and carbon accounting systems, the loss of mandatory facility-level reporting would mean less standardized, comparable emissions data in public inventories.
Looking at what this means for technology planning, the change pulls in two directions. Fewer enforceable limits reduce near-term pressure to retrofit or retire coal and gas units that supply grid power, including power used by data centers and industrial loads. Less reporting weakens outside checks. In my view, that combination makes private measurement more important, not less, because procurement reviews, site selection and long-term power contracts have to carry more weight when compliance data thins.
One point to keep in mind is that none of this changes how greenhouse gases behave in the atmosphere. It changes who must control them, who must count them, and where that duty is enforced. That distinction will shape court cases, state-level responses and corporate climate disclosures long after the Federal Register notices are archived.
