Three Mile Island's Unit 1 reactor is set to be reopened for use following a new deal between Microsoft and Baltimore-based Constellation Energy Corporation.

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 (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.