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One-mile underground nuclear reactor secures key DOE approval

Published

7 August 2026

Topic

technology

Sectors

Clean Energy

Geography

United States

Source

Read at interestingengineering.com

Verified

Fusion42 · 30 August 2026 · Fusion42 review

A one-mile underground nuclear reactor design, called the Deep Fission Gravity Reactor, has won safety approval from the U.S. Department of Energy (DOE), clearing a key regulatory hurdle for its commercial pilot phase.

This Wire brief sits within Fusion42's coverage of Clean Energy, and 2 sources have reported it.

◆ The Wire takeaway

The U.S. DOE’s safety nod opens a direct route to commercialise underground nuclear reactors, forcing you to reassess your energy tech strategy and partnerships this quarter.

Coverage

2 sources · 7 Aug 2026

Related on Wire

Topics

Clean Energynuclearenergy-innovationregulatory-approvalus-doedeep-fission