Constellation Energy was rising sharply after Meta Platforms signed an agreement to buy power generation of a Constellation nuclear plant in Illinois in a 20-year deal.Shares of clean-energy provider Constellation surged 12% in premarket trading.

Facebook parent Meta announced an unprecedented deal with Constellation Energy, the largest American nuclear power plant operator, cementing Meta’s turn to turn to nuclear energy to power its energy intensive, generative artificial intelligence initiatives, and sending Constellation shares surging.

Constellation Energy gains as tech giant turns to nuclear power for its AI ambitions with plan to buy the output of an Illinois nuclear plant.