President Donald Trump signed four executive orders to overhaul the Nuclear Regulatory Commission and hasten the process and deployment of new nuclear power reactors in the United States.

The Nuclear Regulatory Commission and Constellation Energy have confirmed there were no injuries and the cause of the fire is under investigation.

Trump declared a national energy emergency on day one, responding to the first major U.S. power demand surge in decades.

Shares in companies tied to nuclear power jumped Friday, helped by President Donald Trump’s rollout of four executive orders that aim to provide a boost to the sector, but there were concerns about whether there could be much of a near-term impact.

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.

The White House executive orders direct the Nuclear Regulatory Commission to license new reactor designs quickly and gives the departments of Energy and Defense power to develop projects.