# Zeno Power Systems

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/zeno-power-systems

- Industry: Renewable Energy
- Headquarters: Seattle, US
- Website: www.zenopower.com
- Total disclosed funding: $72M
- Latest round: Series B (Aug 4, 2026)
- Investors on record: 12

## About

Zeno Power Systems, Inc., based in the US, specializes in advanced nuclear battery technology, providing sustainable energy solutions for extreme operational environments both on Earth and in space.Founded in Seattle, US, in 2018, Zeno Power Systems, Inc. develops innovative nuclear battery technologies. The company’s founders, Jacob Matthews, Jonathan Segal, and Tyler Bernstein, previously had experience in related fields. Zeno Power raised a total of USD 50.00 mn in its latest Series B funding round on May 14, 2025, led by Hanaco Venture Capital, among others, bringing its total amount raised to USD 50.00 mn and a current company valuation of USD 148.77 mn.Zeno Power specializes in advanced nuclear battery technology, utilizing radioisotope decay to provide reliable energy solutions for extreme environments. Their products include Strontium-90 fueled radioisotope Stirling generators and thermoelectric generators, delivering crucial power for U.S. Department of Defense seabed operations, U.S. Space Force satellites, and NASA lunar missions. These systems produce electricity ranging from 10 to several hundred watts, designed for military, aerospace, and telecommunications sectors, primarily serving U.S. government agencies and defense contractors.Zeno Power generates revenue through contracts with government entities, focusing on the defense and space sectors. Revenue is mainly derived from project-based engagements for developing and supplying nuclear battery systems. The company has secured contracts with the U.S. Navy and NASA, ensuring a B2B focus with long-term agreements, emphasizing the sale of its flagship products like radioisotope Stirling generators and thermoelectric generators. In August 2026, Zeno Power Systems, Inc. raised USD 3.6 million in series C funding from returning investor Seraphim Space Manager. The company will use the funding to support satellite deployment, expand Earth observation capabilities, and advance long-duration power systems for space, defense, and maritime applications.

## Funding rounds

- Series B, Aug 4, 2026, $3.6M — Seraphim Space Manager
- Series B, May 14, 2025, $50M — Vanderbilt University Endowment, Stage 1 Ventures, Seraphim Space Manager, RiverPark Advisors, Hanaco Venture Capital, Jaws Ventures, Balerion Space Ventures
- Series A, Sep 2, 2021, $17M — DCVC, Pallasite Ventures, 1517 Fund, Tribe Capital, AIN Ventures
- Seed, Jan 10, 2020, $1.8M — 1517 Fund, Tribe Capital

## Investors

- 1517 Fund (https://capitalatlas.ai/funds/1517-fund) — Seed, Series A
- Tribe Capital (https://capitalatlas.ai/funds/tribe-capital) — Seed, Series A
- DCVC (https://capitalatlas.ai/funds/dcvc) — Series A
- Pallasite Ventures (https://capitalatlas.ai/funds/pallasite-ventures) — Series A
- AIN Ventures (https://capitalatlas.ai/funds/ain-ventures) — Series A
- Vanderbilt University Endowment — Series B
- Stage 1 Ventures (https://capitalatlas.ai/funds/stage-1-ventures) — Series B
- Seraphim Space Manager (https://capitalatlas.ai/funds/seraphim-space-manager) — Series B
- RiverPark Advisors (https://capitalatlas.ai/funds/riverpark-advisors) — Series B
- Hanaco Venture Capital (https://capitalatlas.ai/funds/hanaco-venture-capital) — Series B
- Jaws Ventures — Series B
- Balerion Space Ventures (https://capitalatlas.ai/funds/balerion-space-ventures) — Series B