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Pre-Seed CleanTech Companies

Explore 65 cleantech startups that raised pre-seed funding. Access verified founder contact information and fundraising data.

Total Companies
65
Total Funding
$26.0M
Avg Funding
$1.0M
Cities
24

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Castle Rock, United States
$2.8M
raised

Agtech company with a novel, proprietary technology to convert manure into hydrogen and other clean commodities

Sep 2021
Pre-Seed

Founder Contacts

41,000+ verified contacts

Innsbruck, Austria
$349K
raised

Serwas turns server waste heat into green energy, using liquid cooling to heat buildings efficiently and cut carbon footprints.

Sep 2026
Pre-Seed

Founder Contacts

41,000+ verified contacts

Innsbruck, Austria
$349K
raised

Serwas turns server waste heat into green energy, using liquid cooling to heat buildings efficiently and cut carbon footprints.

Sep 2026
Pre-Seed

Founder Contacts

41,000+ verified contacts

$250K
raised

Roshan Water™ enables "anywhere by anyone" to do environmental monitoring with on-demand water testing that provides real-time results.

Sep 2022
Pre-Seed

Founder Contacts

41,000+ verified contacts

Oslo, Norway
$2.0M
raised

The simplest way to your EU Taxonomy score. Assess your operations and get & improve your score.

Sep 2022
Pre-Seed

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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Cologne, Germany
$655K
raised

NUNOS develops biological treatment systems that convert livestock slurry into liquid fertilizer and recycle nitrogenous wastewater.

Sep 2026
Pre-Seed

Founder Contacts

41,000+ verified contacts

Montréal, Canada

Moduly offers a virtual power plant that provides resilience, cost savings, and clean energy.

Sep 2021
Pre-Seed

Founder Contacts

41,000+ verified contacts

Chicago Park, United States
$500K
raised

Rise Reforming converts stranded biogas from various sources like wastewater plants and farms into valuable chemicals on-site.

Sep 2026
Pre-Seed

Founder Contacts

41,000+ verified contacts

Tallinn, Estonia
$250K
raised

Applehead is a revolutionary token creating real-world impact

Aug 2022
Pre-Seed

Founder Contacts

41,000+ verified contacts

London, United Kingdom
$1.2M
raised

AI-powered solutions to sort recyclable materials

Aug 2026
Pre-Seed

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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Taquara, Brazil
$310K
raised

SaaS, ESG management platform

Aug 2024
Pre-Seed

Founder Contacts

41,000+ verified contacts

Istanbul, Turkey
$500K
raised

Palgae uses algae to absorb CO2 from the atmosphere and stores it in the raw materials it makes.

Aug 2026
Pre-Seed

Founder Contacts

41,000+ verified contacts

San Leandro, United States
$2.0M
raised

Enables economic lithium production from low-grade resources previously considered infeasible, leveraging applied electrochemistry.

Jul 2026
Pre-Seed

Founder Contacts

41,000+ verified contacts

Berkeley, United States
$2.9M
raised

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

Jul 2024
Pre-Seed

Founder Contacts

41,000+ verified contacts

Valencia, Spain
$328K
raised

Crowmie is the first investment platform in tokenize renewable energy projects.

Jun 2023
Pre-Seed

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
Unlimited exports
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San Francisco, United States

AICE Power develops autonomous subsea drones for monitoring and protecting critical infrastructure and underwater security operations.

Jun 2026
Pre-Seed

Founder Contacts

41,000+ verified contacts

New York, United States
$1.1M
raised

Genvision is an AI-enabled solution to measure carbon storage in natural assets.

Jun 2023
Pre-Seed

Founder Contacts

41,000+ verified contacts

Cincinnati, United States
$100K
raised

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

May 2024
Pre-Seed

Founder Contacts

41,000+ verified contacts

Spring, United States
$3.0M
raised

Fintech that provides a financing marketplace for energy efficiency projects

May 2023
Pre-Seed

Founder Contacts

41,000+ verified contacts

Victoria, Canada
$1.1M
raised

Emitiq provides tools for measuring, reporting, and verifying environmental projects.

May 2023
Pre-Seed

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
Unlimited exports
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Guelph, Canada
$325K
raised

Erode AI helps businesses thrive in a changing climate with AI-driven, accurate weather forecasting tools.

May 2023
Pre-Seed

Founder Contacts

41,000+ verified contacts

Helsinki, Finland
$259K
raised

Ori Solution is a clean energy company that revolutionizes the conversion of kinetic fluid and gas energy to electrical energy.

May 2022
Pre-Seed

Founder Contacts

41,000+ verified contacts

Dover, United States
$5.3M
raised

Bubble Robotics, a company focused on building advanced underwater robots.

Apr 2026
Pre-Seed

Founder Contacts

41,000+ verified contacts

Bath, United Kingdom
$148K
raised

Greener is a B2B sustainability matchmaking platform for food and drink SMEs.

Apr 2022
Pre-Seed

Founder Contacts

41,000+ verified contacts

Naples, Italy
$239K
raised

Green fintech startup that provides a disruptive SaaS for digital receipt collecting Offline Market Big Data through an in-house AI model

Mar 2025
Pre-Seed

Founder Contacts

41,000+ verified contacts

Showing 1 to 25 of 65 companies

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