We are delighted to announce Zeno Power’s $50 million Series B funding round, led by Hanaco Ventures with participation from Seraphim, Balerion Space Ventures, JAWS, Vanderbilt University, and others.
Following its Series A led by Tribe Capital, this Series B round brings Zeno’s total capital raised to over $70 million, as they look to accelerate demonstrating full-scale nuclear batteries in 2026 and deliver systems to frontier environments by 2027.
Powering Strategic Frontiers
The deep ocean, Arctic, and space are emerging as key contested domains for global influence. These regions are already vital for global commerce and government operations. Great Power competition is turning them into strategic arenas where nations and companies vie for presence, resources, and control.
But one challenge persists: energy.
— In space, governments and industry are racing back to the Moon and Mars. Yet, China remains the only country with a sustained lunar presence, with American missions unable to survive the two-week lunar night.
— In the deep sea, protecting seabed infrastructure and powering distributed systems requires energy systems that last for years, not just days or months.
— In polar regions, freezing temperatures and months of darkness render solar and conventional batteries inoperable, threatening vital systems like sensing networks.
Across these frontiers, fuel is impractical, solar fails, and batteries die. Whoever can deliver reliable, years-long energy will shape these domains. Zeno is taking charge.
Zeno’s Nuclear Batteries
Zeno builds nuclear batteries, also known as radioisotope power systems, which convert the heat from decaying radioisotopes into years of reliable energy. While these systems have powered critical missions for decades, they’ve historically been limited to government-led efforts.
Zeno is changing that, by bringing the speed and innovation of the commercial sector to nuclear batteries for the first time – starting with Strontium-90 (Sr-90), an abundant nuclear waste product. Its systems are compact, cost-effective, and resilient – delivering continuous energy for years without sunlight, refueling, or recharging.
Zeno are also honored to welcome Admiral John Richardson, USN (Ret.), former Chief of Naval Operations and Director of Naval Nuclear Propulsion Program, to its Board of Directors.
