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US nuclear firm gets funding to bury mini reactors a mile underground, saving 80%

Sujita Sinha September 09, 2025 3 min read
Interesting Engineering
US nuclear firm gets funding to bury mini reactors a mile underground, saving 80%
AI Article Summary

Deep Fission, a US-based nuclear startup, has successfully raised $30 million via an alternative public offering. The company plans to build small, underground nuclear reactors designed to provide 15 megawatts of power each. These reactors are to be buried a mile underground, leveraging existing technology from the nuclear, oil and gas, and geothermal sectors. With government support and plans to commercialize by 2026, Deep Fission aims to offer affordable, carbon-free energy solutions, particularly for AI data centers.