Microsoft to Restart Three Mile Island Reactor for AI Data Centers

The deal with Constellation Energy aims to supply Microsoft with low-carbon power by 2028, marking a significant step in nuclear energy's resurgence.

Microsoft has signed a 20-year agreement with Constellation Energy to restart the dormant Unit 1 reactor at Three Mile Island by 2028.
The reactor, shut down in 2019, will provide 835 megawatts of low-carbon electricity to support Microsoft's growing AI data centers.
The project faces regulatory hurdles, including approval from the U.S. Nuclear Regulatory Commission and state and local permits.
The resurgence of nuclear power is driven by the tech industry's increasing energy demands and the need for sustainable, reliable power sources.
The deal is part of Microsoft's broader strategy to meet its carbon-negative goals by 2030, amidst rising emissions from its expanding data center operations.