CEO: Liz Muller
Headquarters: Berkeley, California
URL: www.deepfission.com
September 2025
APO Financing: $30,000,000

Deep Fission is revolutionizing the energy landscape with innovative technology that places a small modular pressurized water reactor in a borehole one mile underground. Founded and led by a team of seasoned scientists, engineers, and entrepreneurs, the Company is committed to delivering safe, reliable, and affordable low-carbon power at scale. Deep Fission was recently selected for the Department of Energy’s new Reactor Pilot Program and is targeting criticality by July 2026. Deep Fission was founded in 2023 by father-daughter team Elizabeth and Richard Muller. Learn more at deepfission.com.