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Zeno Power Systems

Radioisotope power systems for space and the seabed

Raised to date

$53.8M

of $53.9M offered across 1 Form D filing

Still open
$152K
Investors
41
Last filed
Dec 12, 2025

About

Zeno Power Systems is a venture-backed startup developing next-generation radioisotope power systems (RPS), often called nuclear batteries. The company's technology converts heat from decaying radioisotopes into long-duration electricity for applications in harsh, remote environments such as space, the seabed, and defense installations. Zeno differentiates itself by using repurposed nuclear materials as fuel, aiming to create systems that are lighter, more affordable, and more scalable than legacy RPS.

Zeno Power develops scalable and lightweight nuclear batteries using repurposed waste isotopes like Strontium-90 and Americium-241, making them more affordable and accessible than traditional radioisotope systems.

Funding

  • EquityFiled Dec 12, 2025Form D
    $53.8M/ $53.9M

Product

Radioisotope Power Systems (RPS)

Nuclear Power Systems

Zeno Power's core offering is a radioisotope power system that converts the heat from decaying nuclear materials into a reliable source of electricity. These systems are designed to provide continuous power in the range of tens to hundreds of watts for years without maintenance, making them suitable for missions in deep space, on the lunar surface, and on the seabed.

  • Scalable power output, configurable from tens to hundreds of watts
  • Utilizes repurposed nuclear waste products (e.g., Sr-90, Am-241) as fuel
  • Engineered for high specific power and lower mass through novel fuel and shielding designs

Built for

The primary customers are U.S. government agencies, including NASA for lunar and deep space missions, the U.S. Space Force and Air Force for satellite power, and the U.S. Navy and DoD for seabed infrastructure and remote sensors. Commercial operators in the space and subsea industries are identified as a long-term target market.

People on file