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Nuclear Startups

Updated July 2026

Companies in the nuclear sector developing innovative solutions and technologies.

Explore 69 recently funded nuclear companies with verified founder contact information and fundraising data.

Total Companies
69
Total Funding
$1.9B
Avg Funding
$78.0M
Global Reach
8
countries

Top Cities for Nuclear

Everett
Misawa
Jacksonville
Lismore
Kastrup
Warrington

Recently Funded Companies

Export
Everett, United States

Zap Energy is developing compact fusion power that doesn't require magnets or lasers.

$130.0M raised
Sep 2024

Founder Contacts

30,000+ verified contacts

Misawa, Japan

Miresso is a startup firm that offers production of beryllium, and nuclear fusion power generation services through natural resources.

$28.8M raised
Aug 2025

Founder Contacts

30,000+ verified contacts

Jacksonville, United States

PRECISION CONTROLLED AERIAL ROBOTICS "The safety partner for the technological revolution"

$300K raised
Aug 2022

Founder Contacts

30,000+ verified contacts

Lismore, Australia

Ubaryon is an Developer Company that is develops and researches on isotope separation technology, in the field of atomic energy.

$250K raised
Jul 2025

Founder Contacts

30,000+ verified contacts

Kastrup, Denmark

Copenhagen Atomics is a manufacturer of thorium reactors.

Jul 2025

Founder Contacts

30,000+ verified contacts

Warrington, United Kingdom

MoltexFLEX is developing the advanced small modular FLEX reactor and GridReserve energy storage system.

$1.7M raised
Jul 2023

Founder Contacts

30,000+ verified contacts

Copenhagen, Denmark

Seaborg develops the Compact Molten Salt Reactor - a smal modular reactor based on molten fluoride salt.

$2.7M raised
Jun 2022

Founder Contacts

30,000+ verified contacts

Seattle, United States

USNC specializes in the fields of nuclear power, small modular reactors, space reactors, and advanced reactors.

$150K raised
Jun 2023

Founder Contacts

30,000+ verified contacts

Everett, United States

Helion Energy is a fusion energy company that develops technology designed to generate electricity through nuclear fusion.

Jun 2026

Founder Contacts

30,000+ verified contacts

Cambridge, United States

Apollo Atomics is the developer of a nuclear technology designed to provide sustainable power and to meet energy demands with deployment.

Jun 2026

Founder Contacts

30,000+ verified contacts

Hongo, Japan

Blossom Energy is a manufacturing company that develops advanced nuclear reactors that can produce clean energy.

$2.1M raised
May 2025

Founder Contacts

30,000+ verified contacts

Boulder, United States

Goshe Energy Storage develops, constructs, and manages utility-scale energy storage facilities to promote a sustainable energy future.

$328.0M raised
May 2026

Founder Contacts

30,000+ verified contacts

Aix-en-provence, France

Otrera provides customizable solutions for delivering low-carbon energy to industries and local communities.

$19.7M raised
May 2026

Founder Contacts

30,000+ verified contacts

Santa Clara, United States

Oklo specializes in designing and developing small modular reactors for advanced fission power plants.

May 2026

Founder Contacts

30,000+ verified contacts

Ecublens, Switzerland

Miraex develops photonic and quantum solutions for next-gen sensing, networking, and computing.

$4.0M raised
May 2022

Founder Contacts

30,000+ verified contacts

Tempe, United States

Fusion Energy Solutions is a customizable research and development facility.

$2.9M raised
Apr 2026

Founder Contacts

30,000+ verified contacts

Abilene, United States

Natura Resources is a advanced reactor developer.

$20.0M raised
Apr 2025

Founder Contacts

30,000+ verified contacts

Yarnton, United Kingdom

First Light Fusion is an energy company that focuses on researching energy generation by inertial confinement fusion.

Apr 2026

Founder Contacts

30,000+ verified contacts

San Francisco, United States

Hadron Energy is a manufacturing company that specializes in Micro Nuclear Reactor (MNR) development, design, and research services.

Apr 2026

Founder Contacts

30,000+ verified contacts

Houston, United States

Fervo Energy develops and operates clean energy technology to generate carbon-free energy from geothermal systems.

$421.0M raised
Apr 2026

Founder Contacts

30,000+ verified contacts

Geel, Belgium

Magics Technologies is a nuclear research center that develops autonomous machines for sustainable energy sources.

$11.1M raised
Apr 2025

Founder Contacts

30,000+ verified contacts

San Francisco, United States

General Matter is a nuclear energy company that produces enriched uranium fuel for nuclear energy applications.

$50.0M raised
Apr 2025

Founder Contacts

30,000+ verified contacts

Derby, United Kingdom

Rolls-Royce SMR specializes in producing factory-built nuclear power plants and offers sustainable, low-cost energy solutions.

$804.8M raised
Apr 2026

Founder Contacts

30,000+ verified contacts

El Segundo, United States

Valar Atomics develops nuclear energy systems designed to supply industrial-scale power and produce energy-derived products.

$105.0M raised
Apr 2026

Founder Contacts

30,000+ verified contacts

San Leandro, United States

Fuse is accelerating the world's transition to Fusion Energy.

$17.0M raised
Mar 2023

Founder Contacts

30,000+ verified contacts

Showing 1 to 25 of 69 companies

About the Nuclear Startup Ecosystem

The nuclear sector is an active area of startup innovation and venture capital investment. Companies in this space are developing new technologies, platforms, and services that address evolving market needs and create new business opportunities.

Funding Trends in Nuclear

Nuclear companies raise capital across various funding stages, from early seed rounds to late-stage growth financing. Investor interest in this sector is driven by the size of the addressable market, the pace of technology adoption, and the potential for scalable business models.

Growth Outlook

The nuclear sector is expected to continue evolving as technology advances, market dynamics shift, and new opportunities emerge. Companies that demonstrate strong product-market fit, efficient growth, and clear competitive advantages are well-positioned to attract continued investment.

Nuclear Funding Breakdown

Here is how funding is distributed among the 69 nuclear companies tracked in the VCBacked database.

Average Funding
$78.0M
Total Funding Tracked
$1.9B
Countries Represented
8

Distribution by Funding Stage

Other25 companies

Top Cities for Nuclear

1.Everett
2 companies$130.0M
2.San Francisco
2 companies$50.0M
3.Misawa
1 companies$28.8M
4.Jacksonville
1 companies$300K
5.Lismore
1 companies$250K

Related Industries

Companies in the nuclear sector often overlap with or complement businesses in adjacent industries. Exploring related verticals can help you discover additional companies, identify partnership opportunities, and understand the broader competitive landscape.

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