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Clean Energy Startups

Updated August 2026

Companies in the clean energy sector developing innovative solutions and technologies.

Explore 727 recently funded clean energy companies with verified founder contact information and fundraising data.

Total Companies
727
Total Funding
$2.1B
Avg Funding
$84.7M
Global Reach
11
countries

Top Cities for Clean Energy

London
Munich
Scottsdale
Hamburg
Vantaa
Newcastle Upon Tyne

Recently Funded Companies

Export
London, United Kingdom

Heat Geek is a designer and installer of energy systems.

Mar 2026

Founder Contacts

41,000+ verified contacts

Munich, Germany

Tado° develops smart heating and cooling control systems designed to optimize energy consumption and improve comfort.

$32.8M raised
Mar 2025

Founder Contacts

41,000+ verified contacts

Scottsdale, United States

Trutankless is a public company that manufactures electric tankless water heaters.

$175K raised
Mar 2022

Founder Contacts

41,000+ verified contacts

Hamburg, Germany

Novocarbo is a carbon removal company built by business professionals with a legacy of passion for soil & agriculture.

$27.2M raised
Mar 2024

Founder Contacts

41,000+ verified contacts

Vantaa, Finland

Themo is a smart thermostat cleantech company.

$1.4M raised
Mar 2024

Founder Contacts

41,000+ verified contacts

Newcastle Upon Tyne, United Kingdom

North of Tyne Combined Authority is an accelerator investment firm.

$10.9M raised
Mar 2023

Founder Contacts

41,000+ verified contacts

North Salt Lake, United States

OxEon Energy is a cleantech start-up that works on alternative energy storage, synthetic fuels, and high purity gas production.

$36.3M raised
Mar 2024

Founder Contacts

41,000+ verified contacts

Lausanne, Switzerland

Qaptis combats climate change by capturing CO2 emissions at the source.

$1.4M raised
Mar 2023

Founder Contacts

41,000+ verified contacts

Walnut Creek, United States

GreenFire Energy delivers geothermal solutions that assure the availability of reliable, resilient, and scalable geothermal energy.

$20.0M raised
Mar 2022

Founder Contacts

41,000+ verified contacts

Singapore, Singapore

SOLV8 is a technology for sustainable solvent separation.

$147K raised
Mar 2022

Founder Contacts

41,000+ verified contacts

Scottsdale, United States

Arevon develops, finances, builds, and operates solar and energy storage projects for utilities, businesses, and communities.

$482.0M raised
Mar 2026

Founder Contacts

41,000+ verified contacts

Marunouchi, Japan

Clean Planet is a renewable energy organization that develops quantum hydrogen energy with cutting-edge technologies.

Mar 2026

Founder Contacts

41,000+ verified contacts

York, United Kingdom

The easiest, fastest, and lowest-risk way to access clean, off-grid, hydrogen powered electricity. Hydrogen deployment platform and services

Mar 2025

Founder Contacts

41,000+ verified contacts

Oakland, United States

Primergy Solar is a renewable energy company that develops, builds, and operates solar photovoltaic and battery energy storage projects.

$760.0M raised
Mar 2026

Founder Contacts

41,000+ verified contacts

Redwood City, United States

SolarGaps is a smart blinds that generate electricity.

Mar 2025

Founder Contacts

41,000+ verified contacts

Barcelona, Spain

WtEnergy operates as a clean energy startup.

$11.9M raised
Feb 2026

Founder Contacts

41,000+ verified contacts

Houston, United States

Revitalizing Windows for Better Buildings. Without Replacement. Without Disruption.

Feb 2023

Founder Contacts

41,000+ verified contacts

Chicago, United States

Clean Core Thorium Energy develops advanced nuclear fuel for existing reactors.

$15.5M raised
Feb 2025

Founder Contacts

41,000+ verified contacts

Çankaya, Turkey

Limak Renewable Energy is taking on a significant role in the green energy transition

$75.0M raised
Feb 2025

Founder Contacts

41,000+ verified contacts

Brooklyn, United States

NineDot Energy develops battery storage sites and other energy solutions.

$431.0M raised
Feb 2026

Founder Contacts

41,000+ verified contacts

Foetz, Luxembourg

R3 Robotics is an industrial robotics company that develops AI-powered automated disassembly systems for end-of-life processing.

$16.5M raised
Feb 2026

Founder Contacts

41,000+ verified contacts

Mountain View, United States

Lunar Energy powers homes around the world with endless clean energy.

$102.0M raised
Feb 2026

Founder Contacts

41,000+ verified contacts

Cincinnati, United States

GoSun offers solar technology that provides power generators, , cooling, charging, lighting and water purification and EV charging.

$1.3M raised
Feb 2026

Founder Contacts

41,000+ verified contacts

Paris, France

Newcleo is an atomic energy company that focuses on developing advanced nuclear energy technologies.

$88.6M raised
Feb 2026

Founder Contacts

41,000+ verified contacts

Chuo, Japan

Galdieria is a biotechnology company providing urban mining recycling, precious metals absorbent, cleantech, and energy-related services.

$2.7M raised
Feb 2025

Founder Contacts

41,000+ verified contacts

Showing 351 to 375 of 727 companies

About the Clean Energy Startup Ecosystem

The clean energy sector is an active area of startup innovation and venture capital investment. Companies in this space are developing new technologies, platforms, and services that address evolving market needs and create new business opportunities.

Funding Trends in Clean Energy

Clean Energy companies raise capital across various funding stages, from early seed rounds to late-stage growth financing. Investor interest in this sector is driven by the size of the addressable market, the pace of technology adoption, and the potential for scalable business models.

Growth Outlook

The clean energy sector is expected to continue evolving as technology advances, market dynamics shift, and new opportunities emerge. Companies that demonstrate strong product-market fit, efficient growth, and clear competitive advantages are well-positioned to attract continued investment.

Clean Energy Funding Breakdown

Here is how funding is distributed among the 727 clean energy companies tracked in the VCBacked database.

Average Funding
$84.7M
Total Funding Tracked
$2.1B
Countries Represented
11

Distribution by Funding Stage

Other25 companies

Top Cities for Clean Energy

1.Scottsdale
2 companies$482.2M
2.London
1 companiesUndisclosed
3.Munich
1 companies$32.8M
4.Hamburg
1 companies$27.2M
5.Vantaa
1 companies$1.4M

Related Industries

Companies in the clean energy sector often overlap with or complement businesses in adjacent industries. Exploring related verticals can help you discover additional companies, identify partnership opportunities, and understand the broader competitive landscape.

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