# US restarts three nuclear reactors to power AI data centers

> Three idle reactors are back online, adding 2.25 GW of electricity for AI workloads, according to a report on Oct 20 2026.

Oossa · 2026-10-20 · https://oossa.com/en/us-restarts-three-nuclear-reactors-to-power-ai-data-centers

Three U.S. nuclear plants that have been offline for years are being brought back into service. The plants – Palisades in Michigan, the Crane Clean Energy Center on the Three Mile Island site in Pennsylvania, and Duane Arnold in Iowa – together will supply about 2.25 gigawatts (GW) of power. The restart is aimed at meeting the growing electricity demand of AI data centers.

## Why the restart matters

AI companies need large, steady power supplies for their servers. Adding 2.25 GW helps keep those data centers running without resorting to new fossil‑fuel plants. For consumers, the extra capacity could keep electricity prices more stable as AI workloads grow.

## The facts

- Three nuclear reactors are being restarted: Palisades (Michigan), Crane Clean Energy Center (Three Mile Island, Pennsylvania), and Duane Arnold (Iowa).
- The combined output of the three reactors is expected to be 2.25 GW.
- The reactors have been offline for many years before this restart.
- The news was reported on Oct 20 2026.

## Why it matters

The additional nuclear power gives AI data centers a reliable, low‑carbon energy source, which can help avoid higher electricity bills for households. It also shows how existing infrastructure can be repurposed to meet new technology demands, though the long‑term impact on energy markets remains to be seen.

## Sources & references

1. [US restarts three shut-down nuclear reactors to feed AI data centers](https://www.tomshardware.com/tech-industry/big-tech/us-takes-unprecedented-step-of-recommissioning-nuclear-plants-due-to-ai-power-demand-2-25-gw-currently-on-tap-from-refurbished-reactors) – Tom's Hardware, 2026-10-20

Last updated: 2026-10-20