Wire · technology
One-mile underground nuclear reactor secures key DOE approval
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Clean Energy
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United States
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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
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Clean Energynuclearenergy-innovationregulatory-approvalus-doedeep-fission