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Clean Energy Startups

Updated July 2026

Companies in the clean energy sector developing innovative solutions and technologies.

Explore 503 recently funded clean energy companies with verified founder contact information and fundraising data.

Total Companies
503
Total Funding
$1.8B
Avg Funding
$72.2M
Global Reach
9
countries

Top Cities for Clean Energy

Chicago
New York
Boston
Kastrup
Colne
Hamburg

Recently Funded Companies

Export
Chicago, United States

Haylon Technologies is enabling a new class of ultra-efficient battery packs.

Jul 2023

Founder Contacts

30,000+ verified contacts

New York, United States

Aircela turns CO2 into green fuels, using direct air capture (DAC) and renewable energy.

$5.5M raised
Jul 2022

Founder Contacts

30,000+ verified contacts

Boston, United States

Altaeros Energies develops airborne wind turbine to produce abundant, low cost, renewable energy.

$34.8M raised
Jul 2022

Founder Contacts

30,000+ verified contacts

Kastrup, Denmark

Copenhagen Atomics is a manufacturer of thorium reactors.

Jul 2025

Founder Contacts

30,000+ verified contacts

Colne, United Kingdom

Patch App intends to digitally transform the window cleaning business.

$2.0M raised
Jul 2025

Founder Contacts

30,000+ verified contacts

Hamburg, United States

Aerovec is a renewable electrical energy provider developing small wind turbine technology.

$139K raised
Jul 2025

Founder Contacts

30,000+ verified contacts

Seattle, United States

Pacific Northwest Hydrogen Association aims to enhance lives by establishing a clean hydrogen ecosystem throughout the Pacific Northwest.

$27.5M raised
Jul 2024

Founder Contacts

30,000+ verified contacts

Dublin, Ireland

Fusion Fuel is into production of green hydrogen.

$4.3M raised
Jul 2025

Founder Contacts

30,000+ verified contacts

Calgary, Canada

Revolutionizing bitumen recovery with biomass-derived solvents produced from forestry and agricultural biomass.

$3.4M raised
Jul 2025

Founder Contacts

30,000+ verified contacts

Cambridge, United States

Solstice provides turnkey customer solutions for shared solar.

Jul 2024

Founder Contacts

30,000+ verified contacts

Baltimore, United States

Solar4Us is an energy company, which aids the low income households to reduce the energy burden and convert it into clean energy.

$370K raised
Jul 2023

Founder Contacts

30,000+ verified contacts

Cary, United States

Sustaera offers a direct air capture solution that works ranging from open grasslands to arid deserts to tropical savannas.

Jul 2022

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

Vancouver, Canada

Leading Edge Materials is a public mining company that focuses on developing a portfolio of strategic critical raw materials projects.

$2.9M raised
Jul 2025

Founder Contacts

30,000+ verified contacts

Bristol, United Kingdom

We’re turning food production on its head to make way better food, that doesn’t cost the earth.

$49.4M raised
Jul 2024

Founder Contacts

30,000+ verified contacts

Eindhoven, The Netherlands

EIT InnoEnergy is an environmental services company that provides catalysing and accelerating energy transitions.

Jul 2024

Founder Contacts

30,000+ verified contacts

Incline Village, United States

Ohmium is a green hydrogen company that manufactures proton exchange membrane systems to produce pressurized, high-purity hydrogen.

Jul 2024

Founder Contacts

30,000+ verified contacts

Belfast, United Kingdom

Ionic Technologies recycles permanent magnets to recover magnet rare earths.

$11.0M raised
Jul 2025

Founder Contacts

30,000+ verified contacts

Auckland, New Zealand

Seachange provides an electric solution for RoPax movements of nautical miles.

$500K raised
Jul 2023

Founder Contacts

30,000+ verified contacts

Berlin, Germany

Nextwind is developing a portfolio of older land-based wind farms in Germany with the goal of either repowering existing wind turbines.

$1.7B raised
Jul 2025

Founder Contacts

30,000+ verified contacts

Berkeley, United States

Power‑Plant‑in‑a‑Box for EV, Data Centers | Green Energy Everywhere

$2.9M raised
Jul 2024

Founder Contacts

30,000+ verified contacts

Albuquerque, United States

Hydro Hash is a crypto mining company utilizing renewable hydroelectric power and liquid cooling.

$493K raised
Jul 2023

Founder Contacts

30,000+ verified contacts

Hellerup, Denmark

STACs Technology zero-emissions cooling solutions upcycle the District Energy industry's services and reach

$3.0M raised
Jul 2022

Founder Contacts

30,000+ verified contacts

Adelaide, Australia

Oxamii is a peer-to-peer marketplace that allows businesses to purchase renewable energy from local producers.

$1.0M raised
Jul 2021

Founder Contacts

30,000+ verified contacts

South Holland, United States

North Sea Farmers mission is to represent the interests of the European seaweed industry.

$2.3M raised
Jul 2025

Founder Contacts

30,000+ verified contacts

Showing 76 to 100 of 503 companies

About the Clean Energy Startup Ecosystem

The clean energy 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 Clean Energy

Clean Energy 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 clean energy 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.

Clean Energy Funding Breakdown

Here is how funding is distributed among the 503 clean energy companies tracked in the VCBacked database.

Average Funding
$72.2M
Total Funding Tracked
$1.8B
Countries Represented
9

Distribution by Funding Stage

Other25 companies

Top Cities for Clean Energy

1.Chicago
1 companiesUndisclosed
2.New York
1 companies$5.5M
3.Boston
1 companies$34.8M
4.Kastrup
1 companiesUndisclosed
5.Colne
1 companies$2.0M

Related Industries

Companies in the clean energy 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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503 Clean Energy Startups (2026) — Recently Funded Companies, Investors & Rounds | VCBacked