President Trump's EPA has repealed Clean Air Act standards that required coal and gas power plants to cut carbon dioxide emissions by up to 90% or shut down by 2039. EPA Administrator Lee Zeldin called it the largest power sector deregulatory action ever and said electricity prices should fall, though the agency also expects coal use for power to rise more than tenfold. Power generation accounts for roughly a quarter of US greenhouse gas emissions. The repeal also proposes blocking future greenhouse gas rules for the power sector. Environmental groups and legal experts say the justification is contradictory and expect court challenges. The outcome matters for anyone tracking US climate policy, grid reliability, and carbon market exposure, because federal emissions rules are one of the few levers that directly cap power sector pollution.
