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Venture - Series Unknown Energy Companies

Explore 536 energy startups that raised venture - series unknown funding. Access verified founder contact information and fundraising data.

Total Companies
536
Total Funding
$272.9M
Avg Funding
$10.9M
Cities
23

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London, United Kingdom

Heat Geek is a designer and installer of energy systems.

Mar 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Le Bourget-du-lac, France
$18.7M
raised

Heliup is a company that creates and manufactures solar systems for huge building roofs.

Mar 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Palm Beach Gardens, United States
$20.0M
raised

Ampera is a clean energy company that offers fusion-powered, subcritical breeder reactor system for nuclear energy for the AI era.

Feb 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

San Jose, United States

Liquid cooling solutions inspired by nuclear power plant cooling.

Feb 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Dyce, United Kingdom
$13.5M
raised

Aurora Energy Services offers services to help the energy industry.

Feb 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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Cologne, Germany
$2.6M
raised

Einklang Energy provides battery storage solutions for German SMEs, combining energy flexibility with renewable power contracts.

Feb 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

El Segundo, United States

Radiant develops portable nuclear microreactors designed to generate electricity and heat in a compact, factory-built form.

Feb 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

South San Francisco, United States
$11.5M
raised

Archimetis provides an AI-powered operational reasoning system for energy, chemical, pharma, and industrial plants.

Feb 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Poggibonsi, Italy
$652K
raised

Engineering company specialized in optimizing Landfill Gas extraction

Feb 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Barcelona, Spain
$11.9M
raised

WtEnergy operates as a clean energy startup.

Feb 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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Stuttgart, Germany

Solarize provides SaaS for energy production, distribution, and billing for commercial microgrids.

Feb 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Seattle, United States
$29.0M
raised

Avalanche Energy is a fusion energy startup that develops micro-fusion reactors for distributed energy and mobility.

Feb 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Charlottesville, United States
$42.5M
raised

Apex Clean Energy is a renewable energy company that develops commercial-scale wind and solar energy facilities.

Jan 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Milan, Italy
$7.1M
raised

Massima Energia offers electricity and gas.

Jan 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Annapolis, United States

Elementl Power is an energy company that specializes in nuclear development services with a focus on clean energy infrastructure.

Jan 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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Rijswijk, The Netherlands
$11.8M
raised

Helin provides a SaaS solution that combines edge control with cloud data processing and remote AI applications.

Jan 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Burlington, United States
$3.0M
raised

Verde Technologies specializes in the production of perovskite solar cells that offers thin film and flexible solar panels.

Jan 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Taastrup, Denmark
$17.6M
raised

Hybrid Greentech offers consultancy in energy storage and Power 2 X technologies to promote renewable energy adoption.

Jan 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Cologne, Germany
$1.2M
raised

hellgrün is a green-tech company that operates PV systems and helps to build simple, smart, sustainable green energy.

Jan 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Cambridge, United States
$7.0M
raised

SYSO Technologies provides end-to-end renewable energy and storage management technology and services.

Jan 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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Cambridge, United States
$24.0M
raised

Malta is a provider of industrial-grade, grid-scale energy storage, and electro-thermal energy storage solutions for energy industry.

Jan 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Salem, United States
$43.7M
raised

Lydian is the electric fuels company, developing the lowest cost SAF from CO2, water, and renewable energy in record time

Jan 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Grass Valley, United States
$6.7M
raised

BoxPower's software and hardware innovations allow utilities and commercial customers to reimagine how power is provided.

Jan 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Tulsa, United States
$150K
raised

Tobe Energy is a hydrogen production technology company that manufactures electrolysis and power electronics systems.

Dec 2025
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Istanbul, Turkey
$330K
raised

Zenith is a specialized engineering and technology business that develops, implements, and scales Floating Photovoltaic (FPV) systems.

Dec 2025
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

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536 Energy Venture - Series Unknown Startups (October 2026) — Page 4 | VCBacked