As part of a power-purchase agreement announced on Friday, Baltimore-based Constellation will restart a segment of the Three Mile Island nuclear plant and sell most of the electricity exclusively to Microsoft to power the tech giant’s data servers. (The Logic)

Talking point: This is the largest power-purchase deal in Constellation’s history, the company said, and underscores how tech firms are racing to secure emissions-free power sources to fuel their artificial intelligence demands. Canada has seen a similar trend in the province of Alberta, where companies including Microsoft and Amazon are buying renewable energy to power their cloud-computing hubs or offset their CO2 emissions. Pending regulatory approval, Constellation will reboot the plant’s Unit 1 reactor, which was shut down in 2019 for economic reasons. The plant’s adjacent Unit 2 reactor closed in 1979 after a malfunction caused a partial core meltdown.