Key Takeaways Constellation Energy will restart the Three Mile Island Unit 1 nuclear plant to provide electricity to power Microsoft's data centers.The 20-year deal is part of Microsoft's effort to reduce its carbon footprint,

Constellation Energy plans to restart the Unit 1 reactor at Three Mile Island. It will sell the power to Microsoft to support the power needs of data centers. Unit 1 is separate from the reactor that partially melted down in 1979 in the worst nuclear accident in U.

Constellation Energy (CEG) signs a 20-year power purchase agreement with Microsoft to pave the way to revive a unit of its Three Mile Island nuclear power plant in Pennsylvania.