The EPA power plant rules rollback removes major carbon limits for coal and gas plants while proposing to eliminate remaining federal greenhouse-gas standards.
WASHINGTON: The EPA power plant rules rollback marks a major shift in US climate policy, with the Environmental Protection Agency repealing most of the Biden-era greenhouse-gas requirements for coal and natural gas power plants.
EPA Administrator Lee Zeldin signed the final action on September 14 during the G20 Energy Ministers meeting in Houston. At the same time, the agency proposed eliminating the remaining federal greenhouse-gas emissions standards for fossil fuel-fired power plants.
What exactly has the EPA repealed?
The final action removes the majority of requirements contained in the 2024 Carbon Pollution Standards.
Those include emissions guidelines covering existing coal, oil and gas-fired steam generating units, carbon capture-based standards for significantly modified coal plants and similar requirements for new baseload natural gas turbines.
The previous standards relied heavily on carbon capture and storage technology. The EPA now argues that requiring plants to capture 90% of their carbon dioxide is not adequately demonstrated at the scale and within the timetable required by the rules.
The agency has not yet completed the removal of every federal greenhouse-gas requirement for power plants. Instead, it has opened a separate proposal to repeal those remaining standards.
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Why is the US government changing the rules?
The administration says its priority is increasing domestic energy production while reducing regulatory costs as electricity demand grows.
The EPA estimates its actions could generate more than $300 billion in savings, although that figure reflects the agency’s own regulatory analysis and is disputed by environmental advocates.
Officials also argue that keeping coal and natural gas plants operating will strengthen grid reliability as electricity consumption increases, including demand associated with data centres and artificial intelligence infrastructure.
The EPA power plant rules rollback reverses a central part of the previous administration’s strategy for reducing emissions from electricity generation.
The Biden-era rule had been expected to prevent around one billion metric tonnes of greenhouse-gas emissions through 2047. Reuters reported that the earlier regulation was estimated to produce approximately $370 billion in net benefits.
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What could the climate impact be?
Environmental and public-health groups argue that removing federal carbon limits could allow fossil fuel power plants to operate for longer and produce more greenhouse-gas emissions.
The US power sector is the country’s second-largest source of greenhouse gases after transportation, and its emissions rose 4% last year, according to Reuters.
Supporters of the repeal, including parts of the power and coal industries, argue that the changes could improve reliability and prevent costly regulations from forcing generating capacity offline.
Legal challenges are also expected, meaning the EPA power plant rules rollback is unlikely to end the wider battle over federal authority to regulate carbon pollution.
State-level emissions regulations are not automatically eliminated by the federal decision and can continue to affect power plants in jurisdictions with their own climate policies.
Impact to expect
Emissions. The rollback could keep more fossil fuel power plants operating while weakening federal pressure to cut carbon pollution, potentially complicating US efforts to reduce greenhouse-gas emissions.
