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Undisclosed Clean Energy Companies

Explore 15 clean energy startups that raised undisclosed funding. Access verified founder contact information and fundraising data.

Total Companies
15
Total Funding
$853.8M
Avg Funding
$56.9M
Cities
15

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Charlevoix, United States
$20.0M
raised

GasTechno Energy and Fuels is a CleanTech Emissions Reduction company that converts stranded gas into valuable chemicals and fuels.

Sep 2025
Undisclosed

Founder Contacts

30,000+ verified contacts

Vancouver, Canada
$2.2M
raised

RZOLV Technologies focused on developing advanced, technology-driven solutions to improve mining operations.

Sep 2025
Undisclosed

Founder Contacts

30,000+ verified contacts

Berkeley, United States

Brimstone is a hardware cleantech startup that aims to reduce CO2 emissions through innovative technologies.

Aug 2025
Undisclosed

Founder Contacts

30,000+ verified contacts

South Yarra, Australia
$651.3M
raised

Octopus Australia is a renewable energy developer and fund manager harnessing capital and expertise to accelerate the energy transition.

Jul 2025
Undisclosed

Founder Contacts

30,000+ verified contacts

Barcelona, Spain
$521K
raised

Electricty from nature.

Jul 2022
Undisclosed

Founder Contacts

30,000+ verified contacts

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San Antonio, United States
$130.0M
raised

OCI Energy develops solar and battery projects and provides EPC, O&M, and PPA support for commercial and utility clients

Jun 2026
Undisclosed

Founder Contacts

30,000+ verified contacts

$371K
raised

CYTOK turns hydrogen & CO₂ into green methane. Patented CCU/CCR tech for MW-scale storage & full energy autonomy

Jun 2025
Undisclosed

Founder Contacts

30,000+ verified contacts

Binghamton, United States

Natrion is developing scalable solid-state electrolytes to enable the mass adoption of EVs.

May 2026
Undisclosed

Founder Contacts

30,000+ verified contacts

San Francisco, United States
$2.4M
raised

The Enterprise Operating System for Manufacturers

Feb 2025
Undisclosed

Founder Contacts

30,000+ verified contacts

Minneapolis, United States
$333K
raised

Nokomis Energy, an energy consulting and development firm, provides a variety of clean energy development and consulting services.

Feb 2025
Undisclosed

Founder Contacts

30,000+ verified contacts

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30,000+ verified emails
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Singapore, Singapore

August Energy helps businesses achieve profitable, scalable decarbonisation through renewable, storage, cooling, and bioenergy solutions.

Jan 2026
Undisclosed

Founder Contacts

30,000+ verified contacts

Lebanon, United States
$3.7M
raised

FreshAir Sensor develops molecular air quality monitoring systems that help property operators track and manage indoor environments.

Dec 2024
Undisclosed

Founder Contacts

30,000+ verified contacts

Cupertino, United States
$40.0M
raised

Gridmatic is an AI-enabled power marketer that accelerates the ascent of clean energy.

Jan 2023
Undisclosed

Founder Contacts

30,000+ verified contacts

Ashburn, United States
$2.0M
raised

Hoevan is a holding company focused on companies who protect, repair, and insure constantly evolving technology products

Nov 2024
Undisclosed

Founder Contacts

30,000+ verified contacts

Tomball, United States
$910K
raised

Kaizen Clean Energy develops hydrogen-based distributed energy resources.

Nov 2024
Undisclosed

Founder Contacts

30,000+ verified contacts

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