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,

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.

Constellation Energy Corporation announced Tuesday it has made a deal to provide the Meta technology company with clean energy for a couple of decades.