Power giant Constellation Energy announced Friday that it had inked a 20-year deal with Microsoft to supply power to an AI data center from the shuttered Three Mile Island nuclear plant in Pennsylvania, the latest sign of a revival for the nuclear sector driven by the voracious energy demand from the technology industry.

Microsoft is in the midst of a deal that would bring the infamous Three Mile Island nuclear power plant back to life, according to reporting by The Washington Post. If the name sounds familiar, it’s because the Pennsylvania plant was home to a partial meltdown of one of its reactors back 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