Top Clean Tech Companies
1,141 Clean Tech companies, sorted by total funding raised.
Develops radioisotope nuclear batteries delivering multi-year power for space missions and subsea...
Smart thermostat and home energy management startup, competitor to Nest.
Manufactures dynamic alkaline electrolysis systems for large-scale green hydrogen production, pai...
Global renewable energy company with 18.5 GW portfolio of wind, solar, hybrid, and hydro power as...
Bedrock builds persistent ocean intelligence solutions for defense, undersea infrastructure, offs...
Carbon mineralization technology for concrete producers that injects captured CO₂ into fresh conc...
Developed modular hydrogen storage and fuel-cell retrofit systems for regional aircraft to enable...
UK inertial confinement fusion research company developing clean energy through FLARE fusion appr...
Kula Bio develops sustainable, biological nitrogen fertilizers by energizing nitrogen-fixing micr...
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...
Liquid Wind is a leading eFuel facility developer that produces eMethanol from green hydrogen and...
Real-time vegetation intelligence, at scale
Builds all-electric autonomous commercial mowers for landscape contractors to reduce labor and em...
EV charging infrastructure company using flywheel-based kinetic energy storage to enable ultra-fa...
Builds stellarators — the most efficient, steady, and stable fusion reactors on earth — to delive...
Germany's leading heat pump installer, offering end-to-end heating system replacement including p...
New Zealand cleantech company using biological processes to recover critical and precious metals ...
Solstice radically expands access to clean energy by providing community-shared solar power to th...
Circular chemical company that converts waste plastics into certified, virgin-equivalent feedstoc...
Makes hydrofoiling electric boats and ferries that deliver long-range, high-speed, energy-efficie...
Carbonext produces scalable 3D graphene through a continuous, cost-effective process that convert...
