Shares of nuclear power companies closed higher on Friday after U.S. President Donald Trump signed executive orders seeking to jumpstart the industry.

Constellation Energy, the largest nuclear operator in the U.S., rose by 3% by Friday afternoon, while shares of uranium mining firms Uranium Energy (23%), Energy Fuels (17%), Cameco Corp. (9.5%) and Centrus Energy (22%) also spiked in value.

Nuclear energy stocks soared Friday ahead of the prospective signing of executive orders by President Donald Trump. The new orders are expected to kickstart the production of nuclear power in the U.S.