Energy Daily

Three Mile Island’s Reboot Moves Into the Fast Lane in Win for Microsoft

A review of the nuclear restart is being sped up by the biggest US grid operator to help the booming artificial-intelligence industry.

The control room inside the shuttered Three Mile Island atomic plant in Middletown, Pennsylvania. Constellation Energy Corp. is spending $1.6 billion to revive it. — The control room inside the shuttered Three Mile Island atomic plant in Middletown, Pennsylvania. Constellation Energy Corp. is spending $1.6 billion to revive it.
Photographer: Heather Khalifa/Bloomberg

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By Will Wade

June 30, 2025 at 11:27 AM UTC

This article is for subscribers only.

Welcome to our guide to the commodities markets powering the global economy. Today, energy reporter Will Wade looks at how the much-anticipated restart of the Three Mile Island nuclear plant in Pennsylvania is coming together faster than expected.

Constellation Energy Corp. announced in September that it plans to restart a mothballed nuclear reactor at Three Mile Island in the eastern US, with executives saying the site would be ready to deliver power in 2028. Now, that timeline just got shorter.