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Microsoft’s AI Power Needs Prompt Revival of Three Mile Island Nuclear Plant


Constellation to invest $1.6 billion to restart dormant reactor as data-center power demand surges.

(Bloomberg) -- The owner of the shuttered Three Mile Island nuclear plant in Pennsylvania will invest $1.6 billion to revive it, agreeing to sell all the output to Microsoft Corp. as the tech titan seeks carbon-free electricity for data centers to power the artificial intelligence boom. While one of the site’s two units permanently closed almost a half-century ago after the worst US nuclear accident, Constellation is planning to reopen the other reactor, which shut in 2019 because it couldn’t compete economically. Earlier this year, Amazon.com Inc.'s cloud computing division agreed to spend $650 million to acquire a data center campus connected to Talen Energy Corp.’s 40-year-old nuclear power plant on the Susquehanna River in Pennsylvania.

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