On October 10, 2017, the U.S. Environmental Protection Agency (EPA) proposed to repeal the Clean Power Plan (CPP), an Obama Administration rule that would limit carbon dioxide (CO2) emissions from existing fossil-fuel-fired power plants. Because power plant CO2 emissions account for about 30% of total U.S. anthropogenic emissions of greenhouse gases (GHGs), the CPP has been seen as the most important U.S. regulation addressing climate change.
The CPP has not gone into effect: In February 2016, the U.S. Supreme Court stayed its implementation pending the completion of judicial review. Even had it not been stayed, the rule’s limits on CO2 emissions were not scheduled to begin taking effect until 2022. The Court’s action delayed various planning requirements that would have determined how states intended to structure compliance with the rule’s overall objectives.
Read more: https://fas.org/sgp/crs/misc/R44992.pdf