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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Enersion Inc. logo

Enersion Inc.

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.

3

Funding Rounds

$3.6m

Money raised

Oasys Water logo

Oasys Water

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

4

Funding Rounds

$20.0m

Money raised

Silatronix logo

Silatronix

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

12

Funding Rounds

$30.0m

Money raised

bound4blue logo

bound4blue

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

$34.6m

Money raised

Shayp logo

Shayp

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

3

Funding Rounds

$4.9m

Money raised

ENOVIX logo

ENOVIX

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

6

Funding Rounds

$191.3m

Money raised

Faradion Limited logo

Faradion Limited

Faradion Limited is a manufacuturer of eergy storage technologies.

1

Funding Rounds

$4.5m

Money raised

Pacific Integrated Energy, Inc. logo

Pacific Integrated Energy, Inc.

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.

3

Funding Rounds

$13.9m

Money raised

Magnolia Solar logo

Magnolia Solar

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

3

Funding Rounds

$2.0m

Money raised

Skypull SA logo

Skypull SA

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

6

Funding Rounds

$226.4k

Money raised

Cerahelix logo

Cerahelix

Cerahelix is a company founded in 2011 by Donald MacKay.

10

Funding Rounds

$7.8m

Money raised

Cadenza Innovation, Inc. logo

Cadenza Innovation, Inc.

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

6

Funding Rounds

$23.7m

Money raised

Infinite Cooling Inc. logo

Infinite Cooling Inc.

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

1

Funding Rounds

$12.3m

Money raised

Evident Thermoelectrics logo

Evident Thermoelectrics

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

3

Funding Rounds

$3.8m

Money raised

Loggerhead Instruments logo

Loggerhead Instruments

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

2

Funding Rounds

$555.0k

Money raised

ROSI logo

ROSI

ROSI is a Grenoble-based company.

1

Funding Rounds

$226.0k

Money raised

Siqens logo

Siqens

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

2

Funding Rounds

$2.8m

Money raised

Sortera Alloys, Inc. logo

Sortera Alloys, Inc.

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

1

Funding Rounds

$10.0m

Money raised

MolyWorks Materials Corp logo

MolyWorks Materials Corp

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

3

Funding Rounds

$9.6m

Money raised

Teraloop logo

Teraloop

Teraloop is a company in Espoo, Southern Finland.

1

Funding Rounds

$2.9m

Money raised

Magna Imperio Systems Corp. logo

Magna Imperio Systems Corp.

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

4

Funding Rounds

$22.7m

Money raised

Revolt Technology, Ltd. logo

Revolt Technology, Ltd.

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

5

Funding Rounds

$33.5m

Money raised

Sunna Design logo

Sunna Design

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

3

Funding Rounds

$15.9m

Money raised

CSD Nano, Inc. logo

CSD Nano, Inc.

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

$5.0m

Money raised

TeraWatt Technology logo

TeraWatt Technology

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

1

Funding Rounds

American Wind logo

American Wind

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

2

Funding Rounds

$1.3m

Money raised

Utilight Ltd logo

Utilight Ltd

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

1

Funding Rounds

$2.9m

Money raised

Sponsh logo

Sponsh

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

1

Funding Rounds

$99.8k

Money raised

KM Co., Ltd. logo

KM Co., Ltd.

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

1

Funding Rounds

Hybridyne Power Systems Inc. logo

Hybridyne Power Systems Inc.

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

1

Funding Rounds

$12.0m

Money raised

Orange Power Ltd. logo

Orange Power Ltd.

Orange Power Ltd. is a company founded in 2012.

2

Funding Rounds

X1 Wind logo

X1 Wind

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

1

Funding Rounds

$4.5m

Money raised