As tech companies scramble to secure new sources of energy, Microsoft on Friday announced a 20-year deal to restart a nuclear reactor at Pennsylvania’s Three Mile Island — a facility made infamous by a partial meltdown in 1979.

The data centers that train the large language models behind AI consume unimaginable amounts of energy, and the stakes are high for big tech companies to

Microsoft is restarting a nuclear plant that partially melted down in 1979. It’s keeping all of the energy for itself, because of the massive power needs of AI.