32 Best Renewables Startups to Watch in 2025

The Definitive Seedtable Ranking of Renewables Startups

We track 71,000+ companies and rank them dynamically using our Seedtable Score – a score that uses quantitative and qualitative data points to signal the momentum behind a company. We then monitor the list manually leveraging our expertise as founders and investors.

There are 32 start-ups with an aggregate funding of $476.5m. The average funding per company in this subset is $14.9m.

Last update to the database: Feb 18, 2025. See changelog.

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3

Funding Rounds

$3.6m

Money raised

Enersion has developed a revolutionary new green technology that uses heat instead of electricity to produce cooling thereby saving on electricity consumption by over 70% compared to the conventional cooling technology.

4

Funding Rounds

$20.0m

Money raised

Oasys Water was a company that developed water treatment and filtration products.

Key people:

12

Funding Rounds

$30.0m

Money raised

Silatronix is a Madison, Wisconsin-based company founded in 2007 by Robert Hamers and Robert West.

Location:

Key people:

3

Funding Rounds

$34.6m

Money raised

bound4blue is a Spanish company that was founded in 2014 with the mission to provide automated wind-assisted propulsion systems as a solution to shipowners and operators.

3

Funding Rounds

$4.9m

Money raised

Platform for automatic water leak detection and remote water consumption tracking in private and public buildings.

6

Funding Rounds

$191.3m

Money raised

ENOVIX is a Fremont, California-based energy storage manufacturer founded in 2006.

1

Funding Rounds

$4.5m

Money raised

Faradion Limited is a manufacuturer of eergy storage technologies.

3

Funding Rounds

$13.9m

Money raised

Pacific Integrated Energy, Inc. is a company that specializes in technologies that produce solar modules for generating power at a lower cost using solar energy, rooftop solar elements, and mobile power.

Location:

Key people:

3

Funding Rounds

$2.0m

Money raised

Magnolia Solar is a Woburn, Massachusetts-based company founded in 2008 by Yash R. Puri.

Key people:

6

Funding Rounds

$226.4k

Money raised

Skypull SA is a Lugano District-based company founded by Reinout Oussoren, Nicola Mona, Marcello Corongiu and Aldo Cattano.

10

Funding Rounds

$7.8m

Money raised

Cerahelix is a company founded in 2011 by Donald MacKay.

6

Funding Rounds

$23.7m

Money raised

Cadenza Innovation, Inc. is a company that is positioned to become a world leader in battery architecture, performance and safety.

Key people:

1

Funding Rounds

$12.3m

Money raised

Infinite Cooling is a Cambridge, Massachusets-based renewables and environment company that specializes in wastewater management and recycling.

Key people:

3

Funding Rounds

$3.8m

Money raised

Evident Thermoelectrics is a power generating company, focusing on thermoelectric solutions.

Industries:

Location:

2

Funding Rounds

$555.0k

Money raised

Loggerhead Instruments specializes in the design and manufacture of data logging tools for the natural sciences field.

Location:

Key people:

1

Funding Rounds

$226.0k

Money raised

ROSI is a Grenoble-based company.

Location:

Key people:

2

Funding Rounds

$2.8m

Money raised

Siqens is a company that is making renewable energy reliable by paving the way towards self-sufficient energy supply.

Location:

Key people:

1

Funding Rounds

$10.0m

Money raised

Sortera uses its patented artificial intelligence technology for the production of low-cost high-quality metal alloys for domestic manufacturing.

Key people:

3

Funding Rounds

$9.6m

Money raised

MolyWorks Materials Corp is a company founded in 2015 by Christopher Eonta.

1

Funding Rounds

$2.9m

Money raised

Teraloop is a company in Espoo, Southern Finland.

Location:

Key people:

4

Funding Rounds

$22.7m

Money raised

Magna Imperio Systems Corp. is a Texas-based company.

5

Funding Rounds

$33.5m

Money raised

ReVolt Technology is a company that emerged from SINTEF, Norway.

Industries:

3

Funding Rounds

$15.9m

Money raised

Sunna Design is a Blanquefort, Gironde-based company founded in 2011 by Gaël ENAUD.

1

Funding Rounds

$5.0m

Money raised

CSD Nano, Inc. is a company that developed and patented the next generation of nano-tech anti-reflective coatings for the solar industry.

1

Funding Rounds

TeraWatt Technology is a Santa Clara, California-based company founded by Ken Ogata.

2

Funding Rounds

$1.3m

Money raised

American Wind is a woman-owned small business that has developed micro ducted wind turbine.

Industries:

Key people:

1

Funding Rounds

$2.9m

Money raised

Utilight Ltd is a company founded by Amir Noy, Michael Matusovsky, Giora Dishon and Moshe Finarov.

Industries:

Location:

Key people:

1

Funding Rounds

$99.8k

Money raised

Sponsh is a Eindhoven-based company founded in 2018 by Lourens Boot.

Industries:

Location:

Key people:

1

Funding Rounds

KM focuses on the development of rotor blades for wind turbine generators.

Industries:

Location:

1

Funding Rounds

$12.0m

Money raised

Hybridyne Power Systems Inc. is a Buffalo, Wyoming-based company founded in 2017 by Thomas Cleland.

Industries:

Location:

Key people:

2

Funding Rounds

Orange Power Ltd. is a company founded in 2012.

Industries:

1

Funding Rounds

$4.5m

Money raised

X1 Wind is developing a disruptive floating platform with the potential to make a step-change in offshore wind.

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