Top Clean Energy Companies
201 Clean Energy companies, sorted by total funding raised.

R&D company with 91 SBIR/STTR awards from Department of Defense, Department of Energy, National A...
Creating the operating system of our zero-carbon, distributed energy future
Emission free hydrogen electric aircraft
Swift Coat provides nanoparticle coatings.
Nuclear fusion startup developing safer atomic power

Tobe Energy cuts green hydrogen production costs by over 50% with a breakthrough electrolysis tec...
R&D company with 3 SBIR/STTR awards from Department of Defense.
R&D company with 1 SBIR/STTR awards from Department of Defense.
R&D company with 2 SBIR/STTR awards from National Science Foundation.
They guide the gradual transition from carbon-based industries to future sustainable systems by r...
Sunborne Systems is a UK-based green fuel technology company developing ammonia-fuelled reactor t...

Produces clean hydrogen and graphite from natural gas via high-temperature methane cracking power...
LAST CALL: the round and our allocation are oversubscribed -- closing early this week -- 10X ligh...

Capacitech is a leader in high-power, space-efficient energy storage solutions. Our flexible Powe...
Industry leading direct current (DC) power distribution for LED lighting, telecom, and data centers
Aftersale solutions for EV
Clean-energy technology company developing solutions for energy transition and decarbonization.
Graphene manufacturer and supplier of high-volume graphene powder for industrial markets includin...
Premium full-service residential solar installation company serving homeowners across multiple U....
Delivers clean energy with the world’s most powerful laser.

Financing platform for residential solar installations, connecting homeowners with solar provider...
SpotmyEnergy develops smart metering systems and energy management solutions.
Rethinking the structure of traditional lead-acid batteries for lower-cost storage systems
Independent flexibility services provider optimizing electricity systems through demand-side flex...

Fusion energy startup developing nuclear fusion technology.