Top Clean Tech Companies
575 Clean Tech companies, sorted by total funding raised.
Simplify the Management of Renewable Energy Assets We offer purpose-built technologies and servic...
Recycles rare earth elements from end-of-life products to supply magnet manufacturers and industr...
A renewable energy transaction platform connecting C&I power buyers to PPAs from utility-scale wi...
Connecting investors with great commercial solar projects
AI-native geothermal company that uses subsurface data and geoscience to find and develop utility...
MIT startup to watch in 2026.
Manufactures dynamic alkaline electrolysis systems for large-scale green hydrogen production, pai...
Next-generation geothermal energy company developing the Eavor-Loop closed-loop system for scalab...
Injects captured CO₂ into concrete during production to reduce carbon footprint without compromis...
Developed modular hydrogen storage and fuel-cell retrofit systems for regional aircraft to enable...
Wynd digitalizes physical stores through connected businesses.
Kula Bio develops sustainable, biological nitrogen fertilizers by energizing nitrogen-fixing micr...
Smart Wires provides grid-enhancing power flow control technology and software that helps electri...
Switzerland-based provider of natural fibre-based sustainable lightweighting solutions
Carbon capture technology company that transforms industrial byproducts like iron and steel slag ...
Smart building operating system that combines IoT hardware, sensors, and AI-driven software to op...
Next Generation Radioisotope Power System
Builds all-electric autonomous commercial mowers for landscape contractors to reduce labor and em...
Italian cleantech company developing CO2 Battery long-duration energy storage systems using carbo...
Real-time vegetation intelligence, at scale
Germany's leading heat pump installer, offering end-to-end heating system replacement including p...
Makes hydrofoiling electric boats and ferries that deliver long-range, high-speed, energy-efficie...
At Carbonext Inc., we are developing a circularity strategy that retrofits existing architectures...
Breaking The Barrier to a Carbon Emissions Free Future
David Energy is a technology-driven retail electricity provider that manages distributed energy r...