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Seed CleanTech Companies

Explore 289 cleantech startups that raised seed funding. Access verified founder contact information and fundraising data.

Total Companies
289
Total Funding
$18.9M
Avg Funding
$1.3M
Cities
14

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Berlin, Germany
$5.8M
raised

In business to reverse climate change

Oct 2021
Seed

Founder Contacts

30,000+ verified contacts

Tallinn, Estonia
$636K
raised

Cleantech platform offering wireless metering and AI-driven energy management to track, analyze, and optimize energy use in real time.

Oct 2025
Seed

Founder Contacts

30,000+ verified contacts

Palazzo Adriano, Italy
$1.5M
raised

Waxy is an innovative startup that operates in the domain of designing, building, and distributing technologies.

Oct 2024
Seed

Founder Contacts

30,000+ verified contacts

Buenos Aires, Argentina
$525K
raised

Last mile Hydrogen Generation for Industrial Processes Decarbonization

Oct 2023
Seed

Founder Contacts

30,000+ verified contacts

San Francisco, United States

Kit Switch offers a streamlined design-to-delivery experience to install reconfigurable apartment interiors inside building structures.

Oct 2022
Pre-Seed

Founder Contacts

30,000+ verified contacts

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Zürich, Switzerland
$274K
raised

Loopia is an app that offers electronic repair services in circular economy.

Oct 2021
Pre-Seed

Founder Contacts

30,000+ verified contacts

$250K
raised

ULTIMATE RECYCLER eliminates garbage landfills, forever, everywhere.

Oct 2021
Seed

Founder Contacts

30,000+ verified contacts

Amsterdam, The Netherlands
$2.3M
raised

BigCircle Ventures is a cleantech venture builder engaged in transforming early-stage deeptech research into scalable startups.

Oct 2025
Seed

Founder Contacts

30,000+ verified contacts

Madrid, Spain
$850K
raised

kokono.green is an energy rehabilitation one-stop shop that optimizes energy renovations to reach a more sustainable society.

Oct 2021
Seed

Founder Contacts

30,000+ verified contacts

Paris, France
$1.5M
raised

Unico engages in promoting and optimizing waste collection in order to reduce waste production.

Oct 2022
Seed

Founder Contacts

30,000+ verified contacts

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30,000+ verified emails
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Tønsberg, Norway
$178K
raised

Maker of Freepower - an electric boat totally self-sufficient by solar energy

Oct 2021
Seed

Founder Contacts

30,000+ verified contacts

Datchet, United Kingdom
$1.6M
raised

HotGreen is an industrial high-temperature heat pump company providing process heat from electricity.

Oct 2025
Pre-Seed

Founder Contacts

30,000+ verified contacts

Lewis Center, United States
$2.0M
raised

Long-duration battery energy storage

Oct 2022
Seed

Founder Contacts

30,000+ verified contacts

Saku, Estonia
$1.5M
raised

Paul-Tech offer real-time fertilizer level and soil workability monitoring system.

Oct 2023
Seed

Founder Contacts

30,000+ verified contacts

Showing 276 to 289 of 289 companies

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289 CleanTech Seed Startups (August 2026) — Page 12 | VCBacked