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CleanTech Startups

Updated July 2026

Companies in the cleantech sector developing innovative solutions and technologies.

Explore 820 recently funded cleantech companies with verified founder contact information and fundraising data.

Total Companies
820
Total Funding
$92.6M
Avg Funding
$3.7M
Global Reach
11
countries

Top Cities for CleanTech

Los Angeles
Vilnius
Stockholm
London
San Francisco
Austin

Recently Funded Companies

Export
Los Angeles, United States

Liquidstar makes Waypoints, or the 7/11 for Utility Services (Electricity, Water, and Internet) in Emerging Markets

$120K raised
Mar 2023

Founder Contacts

30,000+ verified contacts

Vilnius, Lithuania

Viezo is a tech start-up company that specializes in energy harvesting technology that convert vibrations into electricity.

Mar 2023

Founder Contacts

30,000+ verified contacts

Stockholm, Sweden

Novatron develops a new proprietary fusion power concept together with physicists, engineers, and academia.

$10.9M raised
Mar 2025

Founder Contacts

30,000+ verified contacts

London, United Kingdom

Heat Geek is a designer and installer of energy systems.

Mar 2026

Founder Contacts

30,000+ verified contacts

San Francisco, United States

Rubi Laboratories develops biocatalyst solutions that turn carbon emissions into carbon-negative textiles.

$7.5M raised
Mar 2026

Founder Contacts

30,000+ verified contacts

Austin, United States

Shower Stream is a motion-activated luxury smart showerhead that saves hotels $20/room monthly with verified savings.

Mar 2025

Founder Contacts

30,000+ verified contacts

Hayward, United States

Purfresh Clean is a leader in removing odor, mold, mildew, bacteria, germs, & viruses from enclosed spaces, yachts, & agricultural products

$780K raised
Mar 2022

Founder Contacts

30,000+ verified contacts

Calgary, Canada

OzoneBio is a cleantech company that focuses on lignocellulosic waste-derived bio-plastics production.

$3.0M raised
Mar 2022

Founder Contacts

30,000+ verified contacts

Scottsdale, United States

Trutankless is a public company that manufactures electric tankless water heaters.

$175K raised
Mar 2022

Founder Contacts

30,000+ verified contacts

Leicester, United Kingdom

EarthSense provide expert environmental monitoring & modelling of air pollution data, delivering subscription based products & services.

$841K raised
Mar 2025

Founder Contacts

30,000+ verified contacts

Vantaa, Finland

Themo is a smart thermostat cleantech company.

$1.4M raised
Mar 2024

Founder Contacts

30,000+ verified contacts

Hamburg, Germany

Novocarbo is a carbon removal company built by business professionals with a legacy of passion for soil & agriculture.

$27.2M raised
Mar 2024

Founder Contacts

30,000+ verified contacts

North Salt Lake, United States

OxEon Energy is a cleantech start-up that works on alternative energy storage, synthetic fuels, and high purity gas production.

$36.3M raised
Mar 2024

Founder Contacts

30,000+ verified contacts

Wailuku, United States

Hardware-signed environmental data infrastructure. Sensor readings verified at the edge, anchored on-chain.

$250K raised
Mar 2025

Founder Contacts

30,000+ verified contacts

Lausanne, Switzerland

Qaptis combats climate change by capturing CO2 emissions at the source.

$1.4M raised
Mar 2023

Founder Contacts

30,000+ verified contacts

Tallinn, Estonia

Ringy connects trade-ins, refurbishers & marketplaces

$111K raised
Mar 2022

Founder Contacts

30,000+ verified contacts

Singapore, Singapore

SOLV8 is a technology for sustainable solvent separation.

$147K raised
Mar 2022

Founder Contacts

30,000+ verified contacts

London, United Kingdom

Element Packaging is a manufacturer that provides packaging and distribution services for the food and beverage sectors.

$382K raised
Mar 2022

Founder Contacts

30,000+ verified contacts

Marunouchi, Japan

Clean Planet is a renewable energy organization that develops quantum hydrogen energy with cutting-edge technologies.

Mar 2026

Founder Contacts

30,000+ verified contacts

Seattle, United States

Flow Environmental Systems is an engineering firm developing economically feasible and ecologically conscious HVAC&R technologies.

Mar 2025

Founder Contacts

30,000+ verified contacts

York, United Kingdom

The easiest, fastest, and lowest-risk way to access clean, off-grid, hydrogen powered electricity. Hydrogen deployment platform and services

Mar 2025

Founder Contacts

30,000+ verified contacts

Vancouver, Canada

Bayes Studio is a technology company that provides AI-powered environmental monitoring and wildfire detection and management solutions.

$74K raised
Mar 2026

Founder Contacts

30,000+ verified contacts

Malmö, Sweden

Curve is a biotechnology firm developing scalable protein biomanufacturing systems using precision fermentation and AI-driven optimization.

$1.1M raised
Mar 2025

Founder Contacts

30,000+ verified contacts

Redwood City, United States

SolarGaps is a smart blinds that generate electricity.

Mar 2025

Founder Contacts

30,000+ verified contacts

Toronto, Canada

Kiwi Charge is an electric vehicle charging technology company that provides autonomous, mobile charging-as-a-service solutions.

$880K raised
Feb 2026

Founder Contacts

30,000+ verified contacts

Showing 351 to 375 of 820 companies

About the CleanTech Startup Ecosystem

The cleantech 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 CleanTech

CleanTech 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 cleantech 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.

CleanTech Funding Breakdown

Here is how funding is distributed among the 820 cleantech companies tracked in the VCBacked database.

Average Funding
$3.7M
Total Funding Tracked
$92.6M
Countries Represented
11

Distribution by Funding Stage

Other25 companies

Top Cities for CleanTech

1.London
2 companies$382K
2.Los Angeles
1 companies$120K
3.Vilnius
1 companiesUndisclosed
4.Stockholm
1 companies$10.9M
5.San Francisco
1 companies$7.5M

Related Industries

Companies in the cleantech 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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