The EPA is working on analysis that shows greenhouse gas cuts from its rewrite of Obama-era power sector carbon controls wouldn’t be all that different from the limits under the rule it would replace, the agency’s top air official said.

The Environmental Protection Agency will include the additional analysis as part of its final rule replacing the Obama regulation, dubbed the Clean Power Plan, Bill Wehrum, the EPA’s air chief, said Jan. 25.

The Clean Power Plan set first-time...