Home Of The Worst Nuclear Disaster In US History Will Now Power AI

Rising electricity and water demands from AI and large data centers—data centers used about 4% of U.S. power in 2024 (≈183 TWh) and can consume up to 5 million gallons of water per day—have prompted the U.S. Department of Energy to back a $1 billion loan to Constellation Energy to rebuild and restart Three Mile Island Unit 2, renamed the Crane Clean Energy Center, to deliver 835 MW under a 20-year power purchase agreement with Microsoft; DOE says the plant will power roughly 800,000 homes, cut costs, create more than 600 jobs and strengthen the Mid-Atlantic grid. The decision—reviving a site of a 1979 partial meltdown that was decommissioned in 2019—signals a policy and industry pivot toward nuclear baseload capacity to support AI growth and domestic manufacturing, while reintroducing historical safety sensitivities into the debate.

Analysis

The U.S. Department of Energy approved a $1 billion federal loan to Constellation Energy to rebuild and restart Three Mile Island Unit 2 as the Crane Clean Energy Center, aimed to produce 835 megawatts under a 20-year power purchase agreement with Microsoft. DOE projects the plant will power roughly 800,000 homes, lower local electricity costs, create over 600 jobs, and strengthen the Mid-Atlantic grid—directly addressing capacity needs tied to hyperscale computing.

This initiative responds to accelerating demand from AI and data centers, which consumed about 4% of U.S. electricity in 2024 (≈183 TWh) and can use up to 5 million gallons of fresh water per day, highlighting pressures on baseload energy and water resources. Market signals in the dataset show a mildly positive sentiment (score 0.28) with a market impact score of 0.45, and per-ticker sentiment favoring CE (0.7) over MSFT (0.4) reflecting Constellation’s direct exposure.

Execution and regulatory risk remain significant given Three Mile Island’s 1979 Level-5 partial meltdown history and the site’s 2019 decommissioning; timely NRC approvals, permitting, construction timelines and community acceptance are material uncertainties. The 20-year PPA reduces offtake risk but leaves capital, construction and reputational risk concentrated in Constellation, so near-term upside depends on clearing regulatory and construction milestones.

Key Decisions for Investors

• Consider increasing exposure to Constellation Energy (CE) given the $1 billion DOE loan and the 20-year Microsoft PPA, but size positions conservatively until NRC approvals and key construction milestones are confirmed
• Maintain or modestly increase exposure to Microsoft (MSFT) as the PPA secures incremental, reliable capacity for AI operations, while recognizing this project is a small component of Microsoft’s overall energy strategy
• Use regulatory and permitting updates (NRC approvals, state permits, construction timelines) as primary catalysts for re‑rating risk/reward and adjust positions accordingly
• Limit or hedge allocation prior to commercial commissioning to mitigate execution, cost‑overrun, reputational and community‑opposition risks associated with reviving a historically sensitive nuclear site