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CleanTech Startups

Updated August 2026

Companies in the cleantech sector developing innovative solutions and technologies.

Explore 837 recently funded cleantech companies with verified founder contact information and fundraising data.

Total Companies
837
Total Funding
$350.1M
Avg Funding
$14.0M
Global Reach
7
countries

Top Cities for CleanTech

Houston
Binghamton
Philadelphia
Norwich
Woburn
London

Recently Funded Companies

Export
Houston, United States

Altillion develops ALIX-based processes that extract and concentrate lithium and other critical minerals from brine resources.

$5.0M raised
May 2026

Founder Contacts

41,000+ verified contacts

Binghamton, United States

Natrion is developing scalable solid-state electrolytes to enable the mass adoption of EVs.

May 2026

Founder Contacts

41,000+ verified contacts

Philadelphia, United States

Baleena is a clean tech venture tackling microplastic fiber pollution in laundry through analytics and insights.

$10K raised
May 2024

Founder Contacts

41,000+ verified contacts

Norwich, United Kingdom

QuberTech develops genetically enhanced rubber-producing dandelions and indoor soil-free cultivation systems for alternative natural rubber.

$4.6M raised
May 2026

Founder Contacts

41,000+ verified contacts

Woburn, United States

Boston Metal is a metals production company that develops an electric-powered tech to decarbonize steelmaking and metal production.

$75.0M raised
May 2026

Founder Contacts

41,000+ verified contacts

London, United Kingdom

ViridiCO2 delivers innovative, disruptive technology, capable of addressing the lack of mitigative Carbon Capture Utilisation technology.

May 2025

Founder Contacts

41,000+ verified contacts

Somerville, United States

Sublime Systems develops technology to decarbonize cement-making.

May 2025

Founder Contacts

41,000+ verified contacts

New York, United States

Carbon conversion technology bolts onto ANY source of carbon dioxide emissions converts the pollution into clean natural gas StandardRNG

$6.4M raised
May 2025

Founder Contacts

41,000+ verified contacts

London, United Kingdom

CTVC operates as a newsletter powered by Sightline Climate.

$1.8M raised
May 2023

Founder Contacts

41,000+ verified contacts

Woburn, United States

Gradiant provides advanced water treatment solutions to tackle critical water challenges for various industries.

May 2026

Founder Contacts

41,000+ verified contacts

Toronto, Canada

Software company that enables intelligent energy in smart cities

$20.0M raised
May 2023

Founder Contacts

41,000+ verified contacts

Washington, United States

Inspiration is the first one-stop EV solutions company to both finance electric vehicles.

$215.0M raised
May 2022

Founder Contacts

41,000+ verified contacts

Montréal, Canada

Create your own healthy and customized water at home

$1.1M raised
May 2023

Founder Contacts

41,000+ verified contacts

Houston, United States

Sun Co. Tracking specializes in making solar trackers more affordable and reliable for rooftop applications.

$350K raised
May 2022

Founder Contacts

41,000+ verified contacts

Boston, United States

Emvolon is a technology company that converts wasted resources into low-cost green fuels

$200K raised
May 2025

Founder Contacts

41,000+ verified contacts

Sandnes, Norway

Podbike provides an all-weather electric bike designed to reduce CO2 emissions.

$1.4M raised
May 2022

Founder Contacts

41,000+ verified contacts

Mississauga, Canada

Li-Cycle is a clean technology company that uses an environmentally friendly process to recycle lithium-ion batteries.

$7.5M raised
May 2025

Founder Contacts

41,000+ verified contacts

Montréal, Canada

SPARK Microsystems is a semiconductor company that develops short-range wireless communication technology.

$730K raised
May 2026

Founder Contacts

41,000+ verified contacts

Cambridge, United States

Atacama Biomaterials is an AI driven biotech company that offers compostable and biodegradable plastic alternatives.

$2.5M raised
May 2025

Founder Contacts

41,000+ verified contacts

Lutry, Switzerland

Ammonia for Clean Energy - Driving Clean, Sustainable Off-Grid Power Solution

$250K raised
May 2026

Founder Contacts

41,000+ verified contacts

Mesa, United States

Persefoni AI is an IT company that provides a climate management and accounting platform for real-time management and disclosure.

$4.3M raised
May 2026

Founder Contacts

41,000+ verified contacts

Saarbrücken, Germany

A software company developing an AI-driven energy management platform for non-residential and commercial buildings.

$194K raised
May 2024

Founder Contacts

41,000+ verified contacts

Sorocaba, Brazil

Focused on applied technology to preserve what matters: water

$778K raised
May 2024

Founder Contacts

41,000+ verified contacts

Cincinnati, United States

We automate harbor pollution management with scalable smart buoys and "Roombas" for the water

$100K raised
May 2024

Founder Contacts

41,000+ verified contacts

Spring, United States

Fintech that provides a financing marketplace for energy efficiency projects

$3.0M raised
May 2023

Founder Contacts

41,000+ verified contacts

Showing 251 to 275 of 837 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 837 cleantech companies tracked in the VCBacked database.

Average Funding
$14.0M
Total Funding Tracked
$350.1M
Countries Represented
7

Distribution by Funding Stage

Other25 companies

Top Cities for CleanTech

1.Houston
2 companies$5.3M
2.Woburn
2 companies$75.0M
3.London
2 companies$1.8M
4.Montréal
2 companies$1.8M
5.Binghamton
1 companiesUndisclosed

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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