Deep Fission Series B · $80M raised · (2026)

Deep Fission is an advanced nuclear energy company developing small modular pressurized water reactors (SMRs) designed to be placed one mile underground in boreholes. This approach aims to reduce costs, improve safety through natural containment, and enable faster, more scalable deployment of clean, reliable baseload power, particularly for data centers and industrial customers. The company is working with the U.S. Department of Energy's Reactor Pilot Program and is pursuing a Nasdaq IPO.