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Nuclear Startups

Updated October 2026

Companies in the nuclear sector developing innovative solutions and technologies.

Explore 78 recently funded nuclear companies with verified founder contact information and fundraising data.

Total Companies
78
Total Funding
$4.7B
Avg Funding
$186.6M
Global Reach
7
countries

Top Cities for Nuclear

Austin
Osaka
Long Beach
Cambridge
Everett
Madison

Recently Funded Companies

Export
Austin, United States

Salem Robotics develops autonomy software for robotic radiological surveys and inspections in hazardous environments.

$1.8M raised
Sep 2026

Founder Contacts

41,000+ verified contacts

Osaka, Japan

EX-Fusion is a laser fusion company that develops commercial laser based nuclear fusion reactor for power generation.

$2.6M raised
Sep 2026

Founder Contacts

41,000+ verified contacts

Long Beach, United States

Bluecore Energy designs and builds compact, zero-emission small modular nuclear reactors on floating barges.

$50.0M raised
Sep 2026

Founder Contacts

41,000+ 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.t.

$620K raised
Sep 2026

Founder Contacts

41,000+ verified contacts

Everett, United States

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

$130.0M raised
Sep 2024

Founder Contacts

41,000+ verified contacts

Madison, United States

Realta Fusion develops fusion energy technology for the production of industrial heat and power.

$9.5M raised
Sep 2026

Founder Contacts

41,000+ verified contacts

Paris, France

Newcleo is an atomic energy company that focuses on developing advanced nuclear energy technologies.

$216.0M raised
Sep 2026

Founder Contacts

41,000+ verified contacts

Oak Ridge, United States

Stellarator technology to transform energy markets with fusion power.

$1.0M raised
Sep 2026

Founder Contacts

41,000+ verified contacts

Santa Clara, United States

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

$1.0B raised
Sep 2026

Founder Contacts

41,000+ verified contacts

Cambridge, United States

Atomarine builds floating, modular offshore data center barges cooled by seawater and powered by standalone vessels to bypass land grids.

$500K raised
Sep 2026

Founder Contacts

41,000+ 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

41,000+ verified contacts

Washington, United States

Zeno is developing next-generation radioisotope power systems that generate carbon-free, resilient power for decades.

$3.6M raised
Aug 2026

Founder Contacts

41,000+ verified contacts

Tokyo, Japan

Kyoto Fusioneering is a fusion energy engineering company that develops engineering solutions for commercial fusion power plants.

$1.3B raised
Aug 2026

Founder Contacts

41,000+ verified contacts

San Luis Obispo, United States

Atomic Canyon AI application is intended for use in and by nuclear power plants, national and government laboratories.

$7.0M raised
Aug 2026

Founder Contacts

41,000+ verified contacts

Washington, United States

CURIO is a nuclear technology company that develops NuCycle systems to recycle nuclear waste into clean energy.

$2.5M raised
Aug 2026

Founder Contacts

41,000+ verified contacts

Virginia Beach, United States

Anchor Nuclear Solutions offers nuclear operational solutions for advanced reactor developers, government agencies, and nuclear owners.

$252K raised
Aug 2026

Founder Contacts

41,000+ verified contacts

Jacksonville, United States

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

$300K raised
Aug 2022

Founder Contacts

41,000+ verified contacts

Munich, Germany

Proxima Fusion is a fusion energy company developing stellarator-based fusion power plants to deliver safe and carbon-free electricity.

$470.1M raised
Jul 2026

Founder Contacts

41,000+ verified contacts

Cambridge, United States

Commonwealth Fusion Systems designs and develops commercial fusion energy systems to produce clean energy.

$1.0B raised
Jul 2026

Founder Contacts

41,000+ verified contacts

Idaho Falls, United States

NuCube is an innovative technology company designing a revolutionary nuclear fission reactor.

$16.0M raised
Jul 2026

Founder Contacts

41,000+ 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

41,000+ verified contacts

Kastrup, Denmark

Copenhagen Atomics is a manufacturer of thorium reactors.

Jul 2025

Founder Contacts

41,000+ 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

41,000+ verified contacts

Kastrup, Denmark

Blue Energy is a nuclear power plant company that provides reliable, clean, and abundant electricity.

$380.0M raised
Jul 2026

Founder Contacts

41,000+ 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

41,000+ verified contacts

Showing 1 to 25 of 78 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 78 nuclear companies tracked in the VCBacked database.

Average Funding
$186.6M
Total Funding Tracked
$4.7B
Countries Represented
7

Distribution by Funding Stage

Other25 companies

Top Cities for Nuclear

1.Cambridge
3 companies$1.0B
2.Washington
2 companies$6.1M
3.Kastrup
2 companies$380.0M
4.Austin
1 companies$1.8M
5.Osaka
1 companies$2.6M

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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