Zeno Power

Zeno Power is a technology company.

Active

Updated: Feb 17, 2026 ·

Recent News & Mentions

May 1, 2025FundingZeno Power - Series B Oct 1, 2024FundingZeno Power - Series B Apr 1, 2022FundingZeno Power - Series A Jan 1, 2020FundingZeno Power - Seed Jul 1, 2019FundingZeno Power - Seed

Financial History

Zeno Power has raised $112.1M across 5 funding rounds. Most recently, it raised $50.0M Series B in May 2025.

Total Raised

$112.1M

Valuation

N/A

Funding Rounds Raised

Date	Round	Other Investors
May 1, 2025	$50.0M Series B	Alumni Ventures, Hanaco Ventures, Social Starts, Techstars, Tribe Capital, Virginia Venture Partners, Joao Otavio Oliverio
Oct 1, 2024	$40.0M Series B	01 Ventures, Lockheed Martin Ventures, Virginia Venture Partners
Apr 1, 2022	$20.0M Series A	Acequia Capital, Also Capital, Alumni Ventures, Andreessen Horowitz, Boost VC, Champion Hill Labs, Rachel Slaybaugh, Founders Fund, Tribe Capital, Union Square Ventures, Charlie Songhurst, Justin Mateen, Kevin Lin, Tom McInerney
Jan 1, 2020	$2.0M Seed	Acequia Capital, Also Capital, Alumni Ventures, Andreessen Horowitz, Boost VC, Champion Hill Labs, Rachel Slaybaugh, Founders Fund, Tribe Capital, Union Square Ventures, Charlie Songhurst, Justin Mateen, Kevin Lin, Tom McInerney
Jul 1, 2019	$120K Seed	Techstars

Financial History

Zeno Power has raised $112.1M across 5 funding rounds.

Total Raised

$112.1M

Valuation

N/A

Deep Dive

# High-Level Overview

Zeno Power develops next-generation radioisotope power systems (RPS) that convert heat from decaying radioisotopes into electricity, delivering sustained power for years without refueling or maintenance.[1][3] The company addresses a critical gap in energy supply for extreme environments—from the deep ocean floor to deep space—where traditional power systems are constrained by weight, cost, or operational duration.

Zeno serves dual markets: government defense and space agencies (NASA, U.S. Department of Defense, U.S. Space Force) and emerging commercial applications in maritime operations and autonomous systems.[1][2] The company's core value proposition is delivering affordable, lightweight, and long-duration power where conventional energy solutions fail. With a $50 million Series B funding round and demonstrated prototypes, Zeno is positioned to begin customer deliveries in 2026, marking a transition from development to commercialization.[1]

# Origin Story

Zeno was founded in 2018 by three Vanderbilt University students—Tyler, Jonathan, and Jake—guided by Dr. Steve Krahn.[3] The founders initially explored an unconventional idea: powering commercial aircraft with nuclear energy. This ambitious concept evolved into a more urgent realization: reliable power for frontier environments, leading them to identify radioisotope power systems as a promising solution.[3]

The company secured early validation through a $50,000 National Science Foundation grant and $50,000 from 1517 Fund in 2018, followed by $1.5 million in seed funding in 2020.[3] A pivotal moment came in December 2021 when Zeno won a $30 million STRATFI contract from the Department of Defense to build two nuclear batteries—one for space applications and one for seabed operations.[3] The company successfully demonstrated a scaled nuclear prototype at Pacific Northwest National Laboratory in 2023, validating their proprietary design approach and accelerating the path toward regulatory approval.[1][6]

# Core Differentiators

Proprietary heat source design: Zeno's patented radioisotope Stirling generator significantly improves power density and reduces radiation shielding requirements compared to historical RPS models, lowering both weight and cost.[2][6]

Dual-fuel capability: The company develops systems fueled by americium-241 (for NASA lunar missions) and strontium-90 (for Pentagon seabed operations), demonstrating technological flexibility across mission profiles.[1]

Scalable power output: Zeno's systems produce 1–100s watts of power, enabling deployment across diverse applications from small sensors to major infrastructure.[1]

Supply chain advantage: A strategic agreement with Orano provides Zeno priority access to americium-241 from used nuclear fuel recycling, securing fuel supply and reinforcing the sustainability narrative.[1]

Regulatory positioning: Zeno has proactively engaged with the Nuclear Regulatory Commission, achieving first-mover advantage in navigating complex licensing processes for commercial radioisotope power systems.[6]

Demonstrated reliability: Years of consistent power delivery in any environment, with successful prototype demonstrations validating the technology's viability.[1]

# Role in the Broader Tech Landscape

Zeno operates at the intersection of three converging trends: nuclear energy renaissance, resilience-driven infrastructure investment, and extreme environment exploration.

The geopolitical focus on seabed infrastructure resilience—underscored by global conflict—has elevated demand for persistent, independent power sources that cannot be disrupted by conventional means.[1] Simultaneously, space exploration ambitions (lunar missions, deep space probes) and autonomous maritime operations require multi-year power solutions that solar and battery technologies cannot provide. Zeno's technology directly addresses these needs at a moment when government budgets prioritize both defense resilience and space capability.

The company also influences the broader nuclear industry by demonstrating that advanced nuclear technology can move beyond large-scale reactors into distributed, modular applications. By successfully commercializing radioisotope power systems, Zeno validates a pathway for nuclear innovation in sectors previously constrained by regulatory and cost barriers, potentially opening doors for other advanced nuclear ventures.

# Quick Take & Future Outlook

Zeno is positioned to become the dominant supplier of radioisotope power systems for U.S. defense and space missions over the next 3–5 years. The company's transition from prototype to customer delivery in 2026 marks a critical inflection point. Success will depend on navigating final regulatory approvals, scaling manufacturing, and executing on existing government contracts.

Long-term, Zeno's influence will expand beyond government applications. As the technology matures and costs decline, autonomous undersea vehicles, remote sensor networks, and distributed energy systems in extreme environments become viable commercial markets.[6] The company's ability to secure fuel supply through partnerships like Orano will be essential to scaling production.

The broader implication: Zeno is pioneering a new energy paradigm where nuclear technology becomes the default power solution for persistent, resilient operations in places where traditional energy cannot reach. In an era of geopolitical competition and climate-driven infrastructure investment, this positioning gives Zeno outsized influence on how nations power their frontier capabilities.

Sources

Frequently Asked Questions

How much funding has Zeno Power raised?

Zeno Power has raised $112.1M in total across 5 funding rounds.

Who are Zeno Power's investors?

Zeno Power's investors include Alumni Ventures, Hanaco Ventures, Social Starts, Techstars, Tribe Capital, Virginia Venture Partners, Joao Otavio Oliverio, 01 Ventures, Lockheed Martin Ventures, Acequia Capital, Also Capital, Andreessen Horowitz.