Obama's plan was created to cut US carbon dioxide emissions to 32 percent below 2005 levels by 2030.
Pruitt appeared at an event with Senate Majority Leader Mitch McConnell at Whayne Supply in Hazard, Kentucky, a company that sells coal mining supplies.
"That rule really was about picking winners and losers", he said.
"The EPA has not determined whether it will promulgate a rule under section 111 (d) to regulate greenhouse gas (GHG) emissions from existing EGUs, and, if it will do so, when it will do so and what form that rule will take", reads the draft.
Pruitt mocked Obama's effort to stem global warming as a "so-called" plan.
Watch Pruitt's announcement below, via Fox News.
Climate and health experts say repealing the plan will increase health costs from air pollution and do little to limit greenhouse gas emissions, which the Supreme Court told the EPA to do in a 2007 decision, MA v. EPA. If the RGGI states can generate these benefits by cutting carbon, so can other states, which is precisely what EPA's original Clean Power Plan analysis showed. While attorney general for Oklahoma, Pruitt sued the EPA 14 times for what he described as "overreach".
"The Trump Administration's persistent and indefensible denial of climate change - and their continued assault on actions essential to stemming its increasing devastation - is reprehensible, and I will use every available legal tool to fight their unsafe agenda", said Schneiderman, a Democrat. The plan was also an integral part of the commitment US officials made as part of the 2015 Paris Climate Accords, for which some 200 countries committed to combat global warming by reducing carbon dioxide and other greenhouse gases, and from which President Trump has said he plans to withdraw. The economy is already changing over to use natural gas, wind, and solar power since these sources are cheaper than coal.
Under the CPP, states must develop and implement plans that ensure power plants in their state - either as single plants or as a collective group - achieve goals for reducing carbon dioxide (CO2) emissions between 2022 and 2029, and final CO2 emission performance rates by 2030. Almost 200 countries have committed to combat global warming by reducing carbon dioxide and other greenhouse gases that contribute to global warming.