Alaska is going to court to defend the Environmental Protection Agency's effort to repeal emission plans put in place by the Obama administration.

Alaska Attorney General Kevin Clarkson announced Tuesday that the state is joining a coalition to defend the Trump administration's Affordable Clean Energy rule in the U.S. Court of Appeals.

The rule was finalized in June by the EPA. It rolls back the Clean Power Plan put in place by the Obama administration — a move 22 states and seven municipalities have challenged in federal court.

The plan under Obama intended to reduce greenhouse gas emissions through setting national limits on power plant pollution. However, ACE allows states to set their own limits and allows facilities to find more efficient ways to produce energy. This means companies can produce power — like nuclear or coal — as long as they find a cleaner process.

According to federal court documents, the states opposed to the clean energy rule say the EPA improperly repealed CPP. But Clarkson says the coalition defending the EPA is supporting states in creating their own standards for regulating energy and air quality, rather than a "one-size-fits-all model."

“Alaska was fortunate to not be included under the initial phase of the Clean Power Plan,” Clarkson said. “But the EPA made it clear at the time that they would come back to Alaska. They just needed more time. EPA’s adoption of the Affordable Clean Energy rule protects Alaska going forward, ensuring that we can make decisions about our resource development and energy needs.”

Alaska joins 20 states in support of ACE. The coalition's motion was filed with the U.S. Court of Appeals on Sept. 12.

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