Why Microsoft's move to reopen Three Mile Island reactor to meet AI's energy demands is concerning

Microsoft plans to restart Unit 1 of the Three Mile Island nuclear plant to power its AI operations despite concerns about the long-term costs and sustainability of nuclear energy.

Mike Pearl reports for The New Republic.

In short:

• Microsoft aims to address the high energy demands of AI data centers by partnering with Constellation Energy to reopen the shuttered Three Mile Island Unit 1.
• The project will initially be funded by Microsoft, but experts warn future subsidies may be needed to keep the reactor running.
• Critics argue Microsoft should invest in renewable energy sources like solar and wind instead of outdated nuclear technology.

Key quote:

"Microsoft will be asking for government handouts just like most all other aged nuclear reactor owners have asked in multiple states."

— Mark Jacobson, Stanford professor of civil and environmental engineering

Why this matters:

Reopening a controversial nuclear plant highlights the growing energy demand driven by AI technologies. While nuclear power is low-carbon, the financial and environmental costs make it a less ideal solution compared to renewable energy options.