Among a flurry of executive actions, Mr. Trump directed the nation’s nuclear safety regulator to speed up approvals for new reactors.

Trump has signed a spate of executive orders promoting oil, gas and coal that warm the planet when burned to produce electricity. Nuclear reactors generate electricity without emitting greenhouse gases. Trump said reactors are safe and clean, but did not mention climate benefits.

President Trump aims to accelerate the slow-moving nuclear power industry through a series of executive orders signed Friday.He outlined plans to overhaul the U.S. nuclear regulator, fast-track licenses for new projects,