EPA to roll back power plant carbon emission limits, announcement tied to G20 meeting

EPA is reportedly planning to roll back carbon emission limits for US power plants, with the announcement tied to the G20 meeting. The move would reverse existing Clean Air Act rules that require coal and gas plants to cut CO2 output. If finalized, it could slow the near-term shift away from fossil generation and complicate state-level climate plans that depend on federal benchmarks. The exact legal path matters. Changing or withdrawing a rule requires a new EPA rulemaking, which takes months and opens the door to litigation from environmental groups and states. In the meantime, utilities face mixed signals: federal pressure eases, but state targets, corporate clean power contracts, and grid operator plans still push generation toward lower carbon sources. For carbon markets and clean energy finance, the main risk is uncertainty. A weaker federal standard could soften demand for emission reductions and delay some retirements, while states and buyers may respond by tightening their own requirements. The practical effect will depend on what the replacement rule actually says and whether it survives court review.