All Industries

Top Clean Tech Companies

607 Clean Tech companies, sorted by total funding raised.

Gigaton

AI replacing legacy control software in energy-intensive industries. Formerly Carbon Re.

London, United Kingdom11–50Artificial Intelligence, Clean Tech
Series A·$31.0M·Jun 2026
Woodoo

High-performance, sustainable building materials company that transforms wood into alternatives t...

FranceClean Tech, Construction
Seed·$31.0M·Apr 2023
Anthro Energy

Develops polymer electrolytes and lithium-ion battery cells that improve safety, energy density, ...

San Jose, United States11–50Clean Energy, Energy Storage
Grant·$30.7M·Mar 2025
Mantel Capture

Carbon capture startup from MIT that captures CO2 from factories while delivering steam, making i...

United States1–10Clean Tech, Energy
Series A·$30.7M·Sep 2024
Manifest Climate

AI-powered climate risk assessment platform helping companies identify ESG risks, track peer benc...

Toronto, Canada11–50Clean Tech, Climate Tech
Series A·$30.5M·Mar 2022
Endolith Mining

Biomining startup using microbial technology and machine learning to extract copper and critical ...

United States1–10Biotech, Clean Tech
Series A·$30.0M·Jan 2025
Angaza

Financing solutions for life-changing devices

San Francisco, United States51–200Clean Tech, Fintech
Series B·$29.5M·Oct 2020
Clir Renewables

Clir Renewables is an AI-powered analytics platform that helps wind, solar, and BESS asset owners...

Vancouver, Canada51–200Clean Tech, Energy
Venture Round·$28.9M·Jan 2024
Axine Water Technologies

Electrochemical oxidation technology provider for industrial wastewater treatment, offering Treat...

CanadaClean Tech, Climate Tech
Corporate Round·$28.6M·Nov 2024
Seaborg

Seaborg Technologies (now Saltfoss Energy) develops compact molten salt reactors for safe, mass-p...

DenmarkEnergy, Nuclear Energy
Venture Round·$28.0M·Jan 2023
Comet Bio

Comet Bio is a food technology company that upcycles agricultural leftovers into healthy, sustain...

London, Canada11–50Biotech, Clean Tech
Series C·$27.0M·Jul 2021
Solestial

Solestial is on a mission to deliver cost-effective, reliable and safe solutions to power the new...

Tempe, United StatesClean Tech
Series A·$27.0M·May 2025
RainStick

Wi-Fi-enabled recirculating shower system that saves up to 80% water and energy while doubling fl...

Kelowna, Canada1–10Clean Tech
Venture Round·$26.7M·Jun 2023
Miru Smart Technologies

Advanced materials company developing electrochromic smart windows for residential, commercial, a...

Vancouver, Canada11–50Healthcare, Advanced Materials
Series A·$25.4M·Aug 2024
Node Energy

SaaS platform enabling renewable energy plant operators and businesses to manage commercial opera...

Frankfurt, Germany51–200Clean Tech, Energy
Series B·$24.9M·Apr 2025
Connexx Systems

Developer of next-generation battery technologies and energy storage systems for stationary and i...

Kyoto, Japan11–50Energy Storage, Clean Tech
Venture Round·$23.6M·Mar 2023
GreenMantra Technologies

Molecular recycling company converting waste plastics into specialty polymer wax additives for as...

Brantford, Canada51–200Clean Tech, Advanced Materials
Grant·$23.5M
BioEsol

BioEsol offers sustainable energy autonomy, through an intelligent energy storage system. It allo...

Guadalajara, MexicoArtificial Intelligence, Clean Tech
Series A·$23.0M·Mar 2025
Frequenz

Enterprise platform using ML to manage, store, and trade distributed energy resources for corpora...

Berlin, Germany11–50Clean Tech, Energy
Series A·$23.0M·Oct 2022
Audette

AI-powered platform that models commercial building stock to prioritize value-accretive energy re...

Victoria, Canada11–50Artificial Intelligence, Climate Tech
Seed·$22.3M·Jul 2024
CabriCrete

Carbon removal technology company enabling cement-free, carbon-negative concrete using steel slag...

Montreal, Canada11–50Clean Tech, Manufacturing
Convertible·$22.0M·Nov 2022
Kazam

Provides EV charging hardware and software plus energy-management solutions for fleets, CPOs, uti...

Bengaluru, India51–200Clean Tech, Electric Vehicles
Series B·$20.6M·Jun 2025
Plug Zen

EV Charging Solutions, we develop & manufacture EV charging solutions

Detroit, United States1–10Clean Tech, Climate Tech
Series A·$20.1M·Feb 2026
Amp

Energy analytics company helping businesses transform buildings into intelligent, efficient space...

Dubai, United Arab Emirates1–10Clean Tech, Energy
Seed·$20.0M·Dec 2019
Quidnet Energy

Long-duration energy storage company using subsurface geological reservoirs and hydroelectric tur...

Houston, United States11–50Climate Tech, Energy Storage
Corporate Round·$20.0M·May 2024