The president, however, promised during the campaign to bring coal jobs back by rescinding Obama's job-killing regulations, and in a speech in Kentucky, Pruitt said the administration's keeping that promise.
Environmental Protection Agency Administrator Scott Pruitt said Monday in Kentucky that he plans to sign a proposed rule tomorrow repealing the plan, which aimed to restrict greenhouse gas emissions from coal-fired power plants, according to the Associated Press.
"Regulatory power should not be used by any regulatory body to pick winners and losers".
"This assault on the Clean Power Plan won't just dial up climate pollution - it will hurt our economy by slowing the expansion of clean energy jobs while also increasing healthcare costs and leading to thousands of lives lost", said the Environmental Defense Fund in a Monday morning email to thousands of supporters.
Last month, the RGGI states - Connecticut, Delaware, Maine, Maryland, Massachusetts, New Hampshire, New York, Rhode Island, and Vermont - announced they will slash carbon pollution from power plants by at least another 30 percent by 2030.
The Supreme Court put the plan on hold past year following legal challenges by industry and coal-friendly states.More news: Ceasefire ends tomorrow, say Rohingya militants
When the rule was finalized in 2015, power plants were the largest source of USA climate pollution, comprising 31% of the nation's emissions.
Pruit framed the Clean Power Plan - a rule limiting greenhouse gas emissions from power plants - as an overstepping of federal authority that unfairly targeted power plants and the waning coal industry. That compares to the 32% drop in emissions by 2030 under Obama's Clean Power Plan.
Pruitt, as Oklahoma's attorney general, made a career fighting EPA safeguards and was part of a coalition of state attorneys general that tried to block implementation of the CPP.
"The agency now intends to issue what it calls an Advanced Notice of Proposed Rulemaking to solicit input as it considers "developing a rule similarly meant to reduce Carbon dioxide emissions from existing fossil fuel electric utility generating units". He said that on Tuesday, he will sign a proposed rule to formally withdraw from the plan.
Coal-fired power plants are among the largest emitters of carbon.