President Donald Trump signed four nuclear energy-related executive orders on Friday that will speed up reactor testing, allow the Departments of Energy and Defense to build nuclear reactors on federally owned land,

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.

Shares of Constellation Energy, Oklo and other nuclear power companies surged following a report that President Donald Trump planned to sign executive orders boosting the nuclear industry as soon as Friday, with an ease in regulations that would streamline construction of new reactors.