Dive Brief: U.S. Environmental Protection Agency Administrator Lee Zeldin is expected to formally rescind carbon pollution standards for fossil fuel power plants today, according to multiple media reports.
Dive Insight: The EPA has initiated rollbacks of greenhouse gas emissions standards since President Donald Trump took office.
In September 2025, EPA proposed a rule to end the Greenhouse Gas Reporting Program, which requires over 8,000 facilities and suppliers in the U.S. to report their greenhouse gas emissions annually.
That lawsuit also challenges EPA's rollback of real-time continuous emissions monitoring at power plants, alleging it violates the Clean Air Act.
The most acute effects of greenhouse gas emissions are often felt in cities, the letter states.