On Wednesday, Environmental Protection Agency (EPA) Administrator Andrew Wheeler signed the “Affordable Clean Energy” rule, known as ACE, to replace the Obama-era Clean Power Plan, or CPP.
The ACE rule was proposed last summer, and after going through the procedural steps required to enact the rule, Administrator Wheeler finally signed it today, along with an official repeal of the CPP. Details regarding the final rules have been submitted to the Federal Register, one of the last steps to making federal rules official in the US.
Obama’s CPP attempted to set federal power plant emissions limits by state. Under the CPP, states would have had an incentive to push the most-polluting power plants (in most cases, coal plants) offline sooner. But coal interests and several states and utilities challenged this rule in court. Eventually, the Supreme Court stayed the rule, so it was never actually implemented.
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