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Series A Clean Energy Companies

Explore 69 clean energy startups that raised series a funding. Access verified founder contact information and fundraising data.

Total Companies
69
Total Funding
$839.7M
Avg Funding
$33.6M
Cities
19

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Denver, United States
$16.8M
raised

Zero Homes is a technology company that develops an end-to-end digital platform that supports homeowners and contractors.

Feb 2026
Series A

Founder Contacts

30,000+ verified contacts

Copenhagen, Denmark
$9.1M
raised

Bankable renewable energy intelligence

Feb 2024
Series A

Founder Contacts

30,000+ verified contacts

Paphos, Cyprus
$20.0M
raised

Redox One manufactures iron-chromium flow batteries for large-scale energy storage across industrial and grid applications.

Feb 2024
Series A

Founder Contacts

30,000+ verified contacts

San Francisco, United States
$450.0M
raised

Inertia is a fusion-energy company that builds and generates commercialized fusion powers.

Feb 2026
Series A

Founder Contacts

30,000+ verified contacts

Los Angeles, United States
$55.0M
raised

Arbor Energy is a clean power company that creates compact systems to generate clean, dependable electricity with zero emissions.

Oct 2025
Series A

Founder Contacts

30,000+ verified contacts

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Stockholm, Sweden
$3.7M
raised

Greenely provides an energy management platform for consumers to manage energy use and contribute to overall power system stability.

Sep 2025
Series A

Founder Contacts

30,000+ verified contacts

Miami, United States
$20.0M
raised

HOPE Hydration is a water-tech & media startup transforming global hydration.

Jul 2025
Series A

Founder Contacts

30,000+ verified contacts

Berlin, Germany
$27.2M
raised

End-to-End Energy-as-a-Service for Small and Medium Sized Enterprise

May 2025
Series A

Founder Contacts

30,000+ verified contacts

Lexington, United States
$46.3M
raised

The Nuclear Company is a fleet-scale nuclear deployment firm that offers for nuclear sectors.

May 2025
Series A

Founder Contacts

30,000+ verified contacts

Amsterdam, The Netherlands

Transforming CO2 supply

Apr 2025
Series A

Founder Contacts

30,000+ verified contacts

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30,000+ verified emails
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Fribourg, Switzerland
$14.7M
raised

Bloom Biorenewables is making biomass a true alternative to petroleum.

Apr 2025
Series A

Founder Contacts

30,000+ verified contacts

Amsterdam, The Netherlands
$17.5M
raised

Thorizon develops and deploys cutting-edge technology for molten salt reactors.

Mar 2025
Series A

Founder Contacts

30,000+ verified contacts

Berkeley, United States
$27.5M
raised

Capture6 is a direct air capture start-up leveraging its technology to support climate resilience and industrial decarbonization.

Mar 2025
Series A

Founder Contacts

30,000+ verified contacts

London, United Kingdom
$17.4M
raised

Developing the world's first high pressure, ultra-efficient electrolyser and lowest cost of pressurised green hydrogen.

Mar 2025
Series A

Founder Contacts

30,000+ verified contacts

South Burlington, United States
$3.4M
raised

Resonant Link delivers the world's fastest and easiest to use wireless charging for medical devices, consumer electronics, and EVs.

Jan 2025
Series A

Founder Contacts

30,000+ verified contacts

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30,000+ verified emails
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Mainz, Germany
$8.3M
raised

Circular Intelligence Platform for the Battery Economy. We predict when batteries become available and tender them for reuse or recycling

Dec 2024
Series A

Founder Contacts

30,000+ verified contacts

Chatsworth, United States
$3.0M
raised

Calicat is a clean-energy company developing a proprietary electrocatalyst discovery process for electrolyser.

Oct 2024
Series A

Founder Contacts

30,000+ verified contacts

San Francisco, United States
$16.6M
raised

Treehouse is a software-enabled service for home electrification.

Oct 2024
Series A

Founder Contacts

30,000+ verified contacts

Santa Clara, United States
$15.0M
raised

AmpUp is an electric vehicle charging company that enables drivers, hosts, and fleets to charge stress-free.

Sep 2024
Series A

Founder Contacts

30,000+ verified contacts

Berlin, Germany
$3.6M
raised

Amperecloud is the leading Operating System for Renewables.

Jul 2024
Series A

Founder Contacts

30,000+ verified contacts

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30,000+ verified emails
Unlimited exports
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Bern, Switzerland
$3.3M
raised

Green-Y is reducing energy cost for industry clients by providing a next-gen efficient compressed air technology.

Apr 2024
Series A

Founder Contacts

30,000+ verified contacts

San Francisco, United States
$9.5M
raised

Gradient's mission is to cool the world by transforming every home to be more comfortable and healthy for the people who inhabit it.

Feb 2024
Series A

Founder Contacts

30,000+ verified contacts

San Francisco, United States
$10.0M
raised

Camus provides a grid orchestration platform to help electric utilities operate and build a reliable, affordable, and zero-carbon grid.

Feb 2024
Series A

Founder Contacts

30,000+ verified contacts

San Francisco, United States
$13.0M
raised

Geminus is pioneering real-time intelligence for complex industrial systems.

Jan 2024
Series A

Founder Contacts

30,000+ verified contacts

Wilton, United Kingdom
$28.9M
raised

Nova Pangaea Technologies is a cleantech company that has developed a sustainable technology called REFNOVA

Nov 2023
Series A

Founder Contacts

30,000+ verified contacts

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69 Clean Energy Series A Startups (August 2026) — Page 2 | VCBacked