Overview
- The White House hosted nuclear company executives on Friday, July 24, 2026, and announced that Antares Nuclear, Deployable Energy, Valar Atomics and Aalo Atomics met the administration’s goal of going critical by the July 4 deadline.
- Criticality means a reactor has achieved a self-sustaining nuclear chain reaction, a technical proof that the designs can operate but not a substitute for final commercial permission from regulators.
- None of the reactors cited have completed Nuclear Regulatory Commission commercial licensing, and Aalo Atomics has said it plans to file NRC licensing applications later this year.
- The administration is using the milestones to press for faster NRC review, overhaul of approval rules and greater domestic uranium mining and enrichment to reduce reliance on foreign suppliers.
- Officials frame the push as a response to rising electricity demand from data centers and AI, but experts note that safety reviews, grid integration and long lead times for construction remain key hurdles and local impacts to communities could follow if deployment accelerates.