President Donald Trump has signed executive orders to speed up the development of nuclear power and grant the energy secretary authority to approve advanced reactor designs and projects.

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

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,