RALEIGH, N.C. — Already among the two-dozen states suing to overturn new power plant emission rules, North Carolina is picking a separate fight with the Environmental Protection Agency by adopting a plan for compliance the agency is likely to reject.

State officials hope that will create a shortcut to a federal appeals court and head off any attempt by the EPA to drag out the court case while its rules get further entrenched.

North Carolina’s approach is unique because it splits the difference between the handful of states that have said they won’t submit any plan to the EPA, and about a dozen that are hedging their bets by developing compliance plans while they try to defeat the federal rules.

For example, West Virginia – considered a leader in the lawsuit filed in Washington against EPA in October – announced later that month that it would develop a plan to comply with the EPA.

Other states signed onto the lawsuit appear undecided about how to proceed.

North Carolina quickly developed a proposal that ignores two of the three strategies recommended by the EPA. The plan received initial state approval in November.

“North Carolina is way ahead of the curve in terms of putting pen to paper on a rule,” said Clint Woods, executive director of the Association of Air Pollution Control Agencies.

John Evans, chief deputy secretary for the Department of Environmental Quality, explained the rationale during a November meeting before a state environmental panel. He argued that the main lawsuit by the states could be drawn out by the EPA, making the state plan North Carolina’s best hope to fight it in court.

“We expect the EPA to oppose being heard, and if they are successful, then … the only chance for judicial review that we have available to us will be North Carolina’s plan,” he said.

Evans explained that if North Carolina submits a rule that’s rejected by the EPA, the state can then take its case to the 4th U.S. Circuit Court of Appeals.

“We have an appeal right there. That might be the first challenge in the nation to the federal power plan rule,” he said.

North Carolina officials argue that improving the efficiency of power plants is the only approach out of three encouraged by the Obama administration that would be legal under state and federal law. The other approaches are increasing the use of natural gas and renewable energy.

North Carolina’s director of air quality, Sheila Holman, told The Associated Press this month that state officials don’t think they have the authority to force power companies to use those approaches.

According to the state’s own estimates, its plan would fall short of the EPA’s goals for reducing carbon emissions by 2030.

State officials say they will develop a backup plan in 2016 that expands strategies for reducing emissions in case the legal efforts fail. If no plan is submitted, the EPA can impose its own rules on the state.