The records behind this event
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Power Project
Crane Clean Energy Center (Three Mile Island Unit 1)
The restart that defined AI's nuclear turn: 835 MW, all of it for Microsoft.
Three Mile Island Unit 1, the undamaged reactor beside the 1979 accident site, shut in 2019 for economics. In September 2024 Constellation announced its restart as the Crane Clean Energy Center under a 20-year power purchase agreement with Microsoft for the full 835 MW output. Work is ahead of the original 2028 schedule, with company statements targeting…
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Company
Microsoft
Azure, the OpenAI alliance, Copilot, and Fairwater-class AI factories.
Microsoft turned its OpenAI partnership into the fastest enterprise AI franchise: Azure hosts frontier training and serving, Copilot spreads models through Office and GitHub, and its own Maia silicon and Fairwater data centers push down the stack. Under the October 2025 restructuring agreement it holds roughly 27% of OpenAI's new corporate entity (as…
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Company
Constellation Energy
America's largest nuclear fleet: restarting Three Mile Island for Microsoft.
Constellation operates the biggest US nuclear fleet and signed the era-defining deals: the 835 MW, 20-year Microsoft PPA restarting Three Mile Island Unit 1 as the Crane Clean Energy Center, and a 1,121 MW Meta agreement at Clinton. It is the purest listed expression of AI's nuclear turn.
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