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Deep Fission CEO Liz Muller on New, Underground Nuclear Reactors | Bloomberg Businessweek, Sonic AI
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Deep Fission CEO Liz Muller on New, Underground Nuclear Reactors | Bloomberg Businessweek
Bloomberg Businessweek
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Jun 22, 2026
•
10:42
Interview
Deep Fission CEO Liz Muller on New, Underground Nuclear Reactors | Bloomberg Businessweek
From
Bloomberg Businessweek
Emily Graffeo
(Host)
•
Isabelle Lee
(Host)
•
Liz Muller
(Co-founder and CEO, Deep Fission)
•
Will Wade
(Bloomberg News Energy Reporter)
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Executive Summary
Deep Fission (NASDAQ: FISN) is an advanced nuclear company developing small modular pressurized water reactors (SMRs) deployed one mile underground in boreholes.
The company's key value proposition is using this novel deployment of existing technologies to dramatically reduce the cost and construction time (weeks for containment drilling vs.
years) of nuclear power plants.
Deep Fission recently went public, raising $40 million—below its initial target but enough to fund its next milestone, a commercial borehole proof-of-concept scheduled for Fall 2024.
The company is building its first reactor in Kansas under a DOE program, targeting grid connection by late 2027/early 2028, and has secured 15 GW of non-binding LOIs, with over half driven by demand from data centers for AI.
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