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.

Microsoft has signed a 20-year power purchase agreement to resuscitate the Three Mile Island nuclear power plant to fuel its growing AI energy requirements. Subject to regulatory approval, the deal will enable Microsoft to access 835 megawatts of energy from the plant,

Microsoft just signed a deal to revive the shuttered Three Mile Island nuclear power plant. If approved by regulators, the software maker would have exclusive rights to 100 percent of the output for its AI data center needs.