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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
$2.5B
Avg Funding
$131.5M
Global Reach
5
countries

Top Cities for Nuclear

Goteborg
Phoenix
San Francisco
Oak Ridge
Annapolis
Scottsdale

Recently Funded Companies

Export
Goteborg, Sweden

The Nordic region's very first 100% nuclear electricity provider, raising funding to science and R&D in next-gen nuclear.

$2.2M raised
Jul 2023

Founder Contacts

30,000+ verified contacts

Phoenix, United States

Our mission is to solve the world's energy problem.

May 2023

Founder Contacts

30,000+ verified contacts

San Francisco, United States

Terranox AI uses physics-informed AI models and field programs to identify and evaluate uranium exploration targets.

$500K raised
Jan 2026

Founder Contacts

30,000+ verified contacts

Oak Ridge, United States

Standard Nuclear manufactures advanced nuclear fuel for next-generation reactors and high-temperature applications.

$140.0M raised
Jan 2026

Founder Contacts

30,000+ verified contacts

Annapolis, United States

Elementl Power is an energy company that specializes in nuclear development services with a focus on clean energy infrastructure.

Jan 2026

Founder Contacts

30,000+ verified contacts

Scottsdale, United States

Howe Industries is a technology development company that offers new technologies for space exploration and power generation.

$996K raised
Dec 2021

Founder Contacts

30,000+ verified contacts

Vernier, Switzerland

Transmutex will reduce stockpile of nuclear waste by 99% while producing profitable carbon-free energy.

$4.3M raised
Jan 2025

Founder Contacts

30,000+ verified contacts

Stockholm, Sweden

small modular reactors, clean energy, deep tech

$50.0M raised
Dec 2025

Founder Contacts

30,000+ verified contacts

Washington, United States

Last Energy is a nuclear technology company that provides nuclear energy through its modular micro nuclear power plants.

$100.0M raised
Dec 2025

Founder Contacts

30,000+ verified contacts

Exeter, United Kingdom

digiLab empowers organisations and governments through the application of AI and uncertainty quantification.

$2.6M raised
Dec 2024

Founder Contacts

30,000+ verified contacts

Bellevue, United States

ExoFusion is a fusion energy design, IP, and innovation company that offers three GTM strategies: consulting, design, and licensing.

$3.0M raised
Nov 2025

Founder Contacts

30,000+ verified contacts

Oak Ridge, United States

Stellarator technology to transform energy markets with fusion power.

$87.0M raised
Jan 2026

Founder Contacts

30,000+ verified contacts

Rockville, United States

X-energy is a nuclear energy company that develops small modular nuclear reactors and nuclear fuels for clean energy generation.

$700.0M raised
Nov 2025

Founder Contacts

30,000+ verified contacts

San Francisco, United States

Maritime Fusion specializes in the development and construction of high-temperature superconducting fusion reactors.

$4.5M raised
Nov 2025

Founder Contacts

30,000+ verified contacts

New York, United States

NANO Nuclear Energy is an energy company that builds micro-small modular reactors and advanced nuclear reactors.

$400.0M raised
Oct 2025

Founder Contacts

30,000+ verified contacts

Fremont, United States

Pacific Fusion focuses on renewable energy generation, emphasizing affordable fusion power inspired by nature.

$1.0B raised
Oct 2024

Founder Contacts

30,000+ verified contacts

Sapporo, Japan

Ookuma Diamond Device is an advanced materials technology company that offers research and development of diamond semiconductors.

Oct 2024

Founder Contacts

30,000+ verified contacts

London, United Kingdom

A communication tool built for on-site project teams, replacing WhatsApp & linking with existing systems to better report what's happening.

$1.5M raised
Oct 2025

Founder Contacts

30,000+ 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
Oct 2025

Founder Contacts

30,000+ verified contacts

Showing 51 to 69 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
$131.5M
Total Funding Tracked
$2.5B
Countries Represented
5

Distribution by Funding Stage

Other19 companies

Top Cities for Nuclear

1.San Francisco
2 companies$5.0M
2.Oak Ridge
2 companies$227.0M
3.Goteborg
1 companies$2.2M
4.Phoenix
1 companiesUndisclosed
5.Annapolis
1 companiesUndisclosed

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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69 Nuclear Startups (2026) — Recently Funded Companies, Investors & Rounds | VCBacked