Deep Fission

Deep Fission is leading advanced nuclear energy forward by overcoming its greatest historic barrier: cost. Traditional nuclear plants take a decade or more, cost billions, and require sprawling sites that are difficult to permit and finance. Our approach is vastly different, and we expect it to be 80% cheaper. We deploy proven pressurized water reactors in a radically new format — compact, modular units installed a mile underground using established drilling techniques. This innovation is designed to reduce construction complexity, accelerate timelines, and cut upfront costs. Because our reactors are factory-built, repeatable, and deep underground, they can be installed in as little as six months from groundbreaking to operation, setting a new standard for speed and scalability. This would enable nuclear to grow like other forms of clean infrastructure, rather than being confined to a handful of mega-projects. Unlike many advanced concepts that rely on unproven fuels, untested designs, or new regulatory frameworks, Deep Fission leverages what already works: an established reactor design, readily available low-enriched uranium (LEU) fuel, and existing supply chains and regulatory pathways. This aims to keep technical and regulatory risk low while enabling faster deployment. Our system uniquely combines three mature, proven technologies — oil and gas drilling, geothermal heat transfer, and conventional nuclear systems — to simplify supply chains and unlock scalability. In short, we are revolutionizing the energy landscape with technology designed to be the safest, most scalable, affordable, and rapidly deployable in the industry

Over the past 12 months, Deep Fission has achieved a series of breakthroughs that fundamentally advance our mission to deliver low-carbon, scalable, cost-effective nuclear power. Chief among them: we were selected by the U.S. Department of Energy (DOE) for its Reactor Pilot Program, targeting criticality by July 4, 2026. This recognition provides us with federal support, technical collaboration, and a streamlined path toward demonstration, dramatically accelerating our timeline and positioning Deep Fission among the leading innovators shaping the future of nuclear power. We announced a landmark partnership with Endeavour Edged Energy data centers to provide 2 gigawatts (GW) of clean energy for its sustainable infrastructure. We also raised $30M in financing through a go-public transaction. This capital infusion positions Deep Fission to expand our team, accelerate progress toward demonstration in the DOE Pilot Program, followed by expected commercialization quickly after. Finally, we recently announced initial planned sites in Texas, Utah, and Kansas for the codevelopment of nuclear projects. These commitments highlight our ability to move quickly from concept to siting and establish a blueprint for broader national deployment.

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  Nuclear startup Deep Fission says it's going public, again, and I have questions | TechCrunch

  TechCrunch · May 23, 2026

  Deep Fission is seeking an IPO that could raise $157 million, though investors may have trouble buying the nuclear startup's story.