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Seed Clean Energy Companies

Explore 191 clean energy startups that raised seed funding. Access verified founder contact information and fundraising data.

Total Companies
191
Total Funding
$56.3M
Avg Funding
$2.3M
Cities
23

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New York, United States
$5.5M
raised

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

Jul 2022
Seed

Founder Contacts

30,000+ verified contacts

London, United Kingdom

Renewabl is a climate-tech software company.

Jul 2024
Seed

Founder Contacts

30,000+ verified contacts

Boston, United States
$5.0M
raised

Reservoir provides smart heat pump water heaters with connected energy management and thermal storage.

Jul 2026
Seed

Founder Contacts

30,000+ verified contacts

Barcelona, Spain
$5.1M
raised

X1 Wind is a disruptive floating platform developing a floating wind platform for deep waters.

Jul 2026
Seed

Founder Contacts

30,000+ 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

30,000+ verified contacts

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Adelaide, Australia
$1.0M
raised

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

Jul 2021
Seed

Founder Contacts

30,000+ verified contacts

Leeuwarden, The Netherlands
$2.6M
raised

Equinox Ocean Turbines manufactures ocean current turbines for renewable energy, using a two-stage, semi-floating design.

Jul 2024
Seed

Founder Contacts

30,000+ verified contacts

Kongens Lyngby, Denmark
$381K
raised

Waste-to-renewable gas developer focused on serving the Indian gas grid and shipping

Jun 2024
Pre-Seed

Founder Contacts

30,000+ verified contacts

Walldorf, Germany

FuelSave is a disruptive energy efficiency enhancement company that provides innovative solutions.

Jun 2022
Seed

Founder Contacts

30,000+ verified contacts

Berlin, Germany
$351K
raised

Building Germany's off-grid EV charging network with hybrid solar & wind carports.

Jun 2025
Seed

Founder Contacts

30,000+ verified contacts

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30,000+ verified emails
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Las Vegas, United States

Boxabl develops a factory-compatible building system to reduce homeownership costs.

Jun 2025
Seed

Founder Contacts

30,000+ verified contacts

Valencia, Spain
$328K
raised

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

Jun 2023
Pre-Seed

Founder Contacts

30,000+ verified contacts

Miami, United States
$3.0M
raised

$200B+ TAM | Raising Series A | 17 kt H₂/year Platform | Natural Hydrogen & Geothermal | Carbon-Negative | ESG Capital

Jun 2023
Seed

Founder Contacts

30,000+ verified contacts

Heverlee, Belgium
$871K
raised

Astracite is a developer of battery anode materials manufactured from captured carbon dioxide.

Jun 2026
Pre-Seed

Founder Contacts

30,000+ verified contacts

Dallas, United States
$5.0M
raised

Mantle Energy develops activated geothermal systems that repurpose depleted wells to generate low-carbon baseload power.

Jun 2026
Seed

Founder Contacts

30,000+ verified contacts

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30,000+ verified emails
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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

30,000+ verified contacts

Chicago, United States
$250K
raised

Ourea Energy is a clean tech company that offers gravity-powered energy storage solution for data centers and independent power producers.

Jun 2026
Seed

Founder Contacts

30,000+ verified contacts

Somerville, United States
$1.0M
raised

Raise Green is a climate tech marketplace for local impact investing.

Jun 2023
Seed

Founder Contacts

30,000+ verified contacts

Amsterdam, The Netherlands
$377K
raised

BlueBird Power engages in the acceleration and integration of clean energy.

Jun 2023
Pre-Seed

Founder Contacts

30,000+ verified contacts

London, United Kingdom

Faradai is an AI-powered energy management platform helping businesses monitor, optimize, and reduce carbon emissions and energy costs.

May 2024
Seed

Founder Contacts

30,000+ verified contacts

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30,000+ verified emails
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Oxford, United Kingdom
$5.8M
raised

Caudal Energy develops bio-inspired tidal energy systems delivering predictable, low-impact renewable power from ocean currents.

May 2026
Seed

Founder Contacts

30,000+ verified contacts

Bridgehampton, United States
$4.3M
raised

Clear Current is an AI-driven platform designed to serve as the "nerve center" for energy operations.

May 2025
Seed

Founder Contacts

30,000+ verified contacts

Somerville, United States
$4.5M
raised

Singularity Energy uses real-time carbon data to make better energy decisions.

May 2022
Seed

Founder Contacts

30,000+ verified contacts

Houston, United States
$5.0M
raised

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

May 2026
Seed

Founder Contacts

30,000+ verified contacts

Spring, United States
$3.0M
raised

Fintech that provides a financing marketplace for energy efficiency projects

May 2023
Pre-Seed

Founder Contacts

30,000+ verified contacts

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