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Clean Energy Startups

Updated July 2026

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

Explore 510 recently funded clean energy companies with verified founder contact information and fundraising data.

Total Companies
510
Total Funding
$1.7B
Avg Funding
$68.1M
Global Reach
8
countries

Top Cities for Clean Energy

El Segundo
Denver
Houston
Loveland
London
Newport Beach

Recently Funded Companies

Export
El Segundo, United States

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

Feb 2026

Founder Contacts

30,000+ verified contacts

Denver, United States

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

$16.8M raised
Feb 2026

Founder Contacts

30,000+ verified contacts

Houston, United States

Utility Global is an off-gas-to-value company that reduces emissions and improves energy efficiency through clean energy generation systems.

$100.0M raised
Feb 2026

Founder Contacts

30,000+ verified contacts

Loveland, United States

KineticCore Solutions is a technology manufacturing company that produces energy storage systems.

$255K raised
Feb 2022

Founder Contacts

30,000+ verified contacts

London, United Kingdom

Carnot is decarbonising heavy-duty power with next generation, high efficiency, zero emission engine technology

$1.2M raised
Feb 2023

Founder Contacts

30,000+ verified contacts

Newport Beach, United States

Rimere provides climate solution services.

$10.0M raised
Feb 2024

Founder Contacts

30,000+ verified contacts

Paphos, Cyprus

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

$20.0M raised
Feb 2024

Founder Contacts

30,000+ verified contacts

Seattle, United States

Joule Case ESS is designed to meet the mission-critical power needs of businesses, heavy industry, grid-backup, and EV charging.

$2.2M raised
Feb 2023

Founder Contacts

30,000+ verified contacts

Vancouver, Canada

Taurus is a renewable energy platform that develops and operates renewable natural gas projects and facilities.

$7.4M raised
Feb 2026

Founder Contacts

30,000+ verified contacts

San Francisco, United States

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

$450.0M raised
Feb 2026

Founder Contacts

30,000+ verified contacts

Providence, United States

Project Omega is a Rhode Island-based nuclear startup that converts spent nuclear fuel into compact, long-lasting batteries.

$12.0M raised
Feb 2026

Founder Contacts

30,000+ verified contacts

Cookeville, United States

Novastus is an alternative energy company that produces negative carbon fuel using waste materials.

$400K raised
Feb 2025

Founder Contacts

30,000+ verified contacts

Boulder, United States

Bolder Industries converts carbon black and petrochemicals into eco-friendly alternatives for rubber and plastic products.

Feb 2025

Founder Contacts

30,000+ verified contacts

Bethesda, United States

We make Bitcoin mining with renewable energy easy and accessible to everyone.

$211K raised
Feb 2023

Founder Contacts

30,000+ verified contacts

Singapore, Singapore

HYDGEN develops modular electrolyzer systems designed for on-site and on-demand green hydrogen production.

$5.0M raised
Oct 2025

Founder Contacts

30,000+ verified contacts

Golden, United States

Steelhead Composites is a provider of hydrogen storage solutions used to allow widespread zero-emission fuel cell electrification.

$1.9M raised
Oct 2025

Founder Contacts

30,000+ verified contacts

Los Angeles, United States

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

$55.0M raised
Oct 2025

Founder Contacts

30,000+ verified contacts

Berlin, Germany

Bees & Bears is a green fintech company that specializes in financing renewable energy solutions.

$5.0M raised
Oct 2025

Founder Contacts

30,000+ verified contacts

South San Francisco, United States

Glydways designs and implements personal rapid transit systems using self-driving vehicles.

$101.3M raised
Sep 2025

Founder Contacts

30,000+ verified contacts

London, United Kingdom

Empowering households to reduce energy consumption while making homes a proactive part of the energy grid.

$3.2M raised
Sep 2025

Founder Contacts

30,000+ verified contacts

Torino, Italy

E-mobility, Sustainable Manufacturing, Advanced Materials, Cleantech, Electrification, Decarbonization

$23.4M raised
Sep 2025

Founder Contacts

30,000+ verified contacts

Munich, Germany

Proxima Fusion develops stellarator-based fusion reactors to deliver clean, continuous energy through advanced simulation and engineering.

$17.6M raised
Sep 2025

Founder Contacts

30,000+ verified contacts

Sheffield, United Kingdom

mopo provides clean, affordable energy to the off-grid market in Africa.

$6.8M raised
Sep 2025

Founder Contacts

30,000+ verified contacts

Valencia, Spain

Ingelia is a technology-based company specializing in R & D in the renewable energy sector.

$791K raised
Sep 2025

Founder Contacts

30,000+ verified contacts

Cambridge, United States

Commonwealth Fusion Systems designs and develops commercial fusion energy systems to produce clean energy.

$863.0M raised
Aug 2025

Founder Contacts

30,000+ verified contacts

Showing 276 to 300 of 510 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 510 clean energy companies tracked in the VCBacked database.

Average Funding
$68.1M
Total Funding Tracked
$1.7B
Countries Represented
8

Distribution by Funding Stage

Other25 companies

Top Cities for Clean Energy

1.London
2 companies$4.4M
2.El Segundo
1 companiesUndisclosed
3.Denver
1 companies$16.8M
4.Houston
1 companies$100.0M
5.Loveland
1 companies$255K

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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