In one of the most sweeping climate rollbacks of the Trump era, the Environmental Protection Agency has finalized a rule repealing most of the 2024 Carbon Pollution Standards for fossil fuel power plants and is moving to scrap all remaining greenhouse gas requirements for the sector. The decision comes just after the hottest summer on record and a stark United Nations assessment warning that global temperatures are pushing climate risks to increasingly dangerous levels, underscoring how sharply U.S. policy is veering away from climate science.
The Biden-era Carbon Pollution Standards targeted the nation’s coal- and gas-fired power plants, the second-largest source of U.S. climate pollution after transportation. Those rules required existing coal plants and new baseload natural gas turbines to dramatically cut carbon dioxide emissions beginning in the 2030s, largely by installing or co-firing with technologies such as carbon capture and storage and low-emitting fuels. The standards also set emission guidelines for a broad class of existing fossil fuel–fired steam generating units, effectively pushing the power sector toward a cleaner grid over the next several decades. Utilities, grid operators, and state regulators had begun planning around those requirements, which were designed to dovetail with federal goals for economy-wide decarbonization.
Trump’s EPA is now dismantling that framework almost entirely. In the final repeal rule issued on September 14, 2026, the agency strikes most of the 2024 Carbon Pollution Standards, including the carbon capture–based limits for coal plants undergoing major upgrades and for new baseload gas turbines. At the same time, a supplemental proposal would revoke every remaining greenhouse gas standard for fossil fuel–fired electric generating units under Clean Air Act Section 111, asserting that power plant emissions “do not contribute significantly” to dangerous air pollution. The agency argues that the Biden rule exceeded its statutory authority by mandating control technologies it now claims are “not adequately demonstrated,” particularly large-scale carbon capture and storage. This move builds on a separate Trump EPA action earlier this year that rescinded the 2009 greenhouse gas “endangerment finding,” a cornerstone determination that previously compelled EPA to regulate climate pollution.
Industry groups and Trump administration officials frame the repeal as a win for “energy dominance,” contending that lifting climate constraints will lower compliance costs, stabilize the grid, and keep electricity prices in check. Fossil fuel–heavy utilities and some state regulators had criticized the 2024 standards as too reliant on expensive or commercially immature technologies, warning of potential reliability risks if coal and gas capacity retired faster than replacement infrastructure could be built. By eliminating federal climate rules, the administration is effectively betting that market forces and voluntary actions will be enough to manage emissions from a sector that still accounts for a large share of U.S. carbon output. Supporters also point to the Supreme Court’s West Virginia v. EPA decision, which narrowed the agency’s ability to drive generation-shifting, as justification for a minimalist regulatory approach.
Environmental and public health advocates see the move very differently, calling it a direct assault on one of the country’s biggest climate protections. Groups warn that allowing power plants to operate without federal greenhouse gas limits will lock in higher emissions for decades, making it far harder for the U.S. to meet international climate commitments and increasing the likelihood of more extreme heatwaves, storms, and wildfires. Health experts note that fossil fuel plants emit not just carbon dioxide but also particulate matter, sulfur dioxide, and nitrogen oxides, pollutants that worsen respiratory and cardiovascular disease in nearby communities. Many of those communities are low-income and disproportionately Black and Brown, meaning the rollback could deepen long-standing environmental justice inequities. Climate policy analysts also argue that weakening power-sector rules undermines investment signals for clean energy and grid modernization, potentially slowing deployment of renewables, storage, and advanced transmission that were expected to fill the gap as coal and gas declined.
The legal and political fallout is already taking shape. State attorneys general, environmental organizations, and some clean-energy companies are preparing lawsuits that will likely challenge EPA’s new claim that power plants’ greenhouse gas emissions lack “material impact” on climate change and expand prior court battles over the scope of the agency’s authority under the Clean Air Act. Opponents say the proposed finding directly conflicts with decades of scientific assessments and EPA’s own record, including earlier technical documents showing that large stationary sources significantly contribute to dangerous climate-altering pollution. At the same time, a coalition of states with their own climate laws and regional cap-and-trade programs are signaling that they will keep or tighten local power-plant standards, creating a fragmented regulatory map that utilities and grid operators will have to navigate. For now, the Trump EPA’s repeal marks a decisive shift toward deregulation at the federal level, leaving the future of U.S. climate policy—and the role of power plants within it—hinging on the courts, state capitals, and the outcome of the next election.
