69 Best Solar Power Startups to Watch in 2025

The Definitive Seedtable Ranking of Solar Power 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 261 start-ups with an aggregate funding of $10.0b. The average funding per company in this subset is $145.2m.

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

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6

Funding Rounds

$577.8m

Money raised

Helion Energy is a fusion power company aiming to build the world's first fusion power plant.

Key people:

13

Funding Rounds

$779.0m

Money raised

Developer and manufacturer of systems for renewable industrial gas and fuel production.

Location:

Key people:

3

Funding Rounds

$19.6m

Money raised

Aerones is a company building heavy-lift drones founded in 2015 by Janis Putrams.

Key people:

4

Funding Rounds

$150.0m

Money raised

Net Power is a Durham, North Carolina-based natural gas electricity producer using carbon capture and storage to maintain zero emissions production.

10

Funding Rounds

$44.8m

Money raised

A food technology company, based in Finland and founded in 2017, that has a process to electrolyze water for production of hydrogen in a system to feed bacteria to produce an edible protein food product with a low environmental impact. Their technology is being developed for space travel and future food production on Mars.

10

Funding Rounds

$33.0m

Money raised

NEXT Energy Technologies is a Santa Barbara, California-based developer of photovoltaic coatings for window.

Key people:

5

Funding Rounds

$40.4m

Money raised

Enervee is a company founded in 2010 by Hjalmar Branting, Iker Casillas, Aoife Ní Fhearraigh, Yhonastan Fabian, The Sxplay, Ujiie Naotomo, Robbie Grossman, Ingrid Gfölner, Moisey Uretsky, Don Epperson, Matt Service FBCS and Bhavesh M. Mehta.

6

Funding Rounds

$490.0m

Money raised

An nanotechnology company with focus on developing solar products. It was founded in 2002 and closed in 2013.

5

Funding Rounds

$264.5m

Money raised

Arcadia, previously Arcadia Power, is a Washington, D.C. based tech company which aims to enable a zero-carbon economy. Arcadia is also the developer of a clean energy tech platform designed to facilitate access to clean energy.

Key people:

5

Funding Rounds

$32.7m

Money raised

PhaseCraft is company that is developing fundamental quantum theory and software for quantum computers.

Location:

Key people:

1

Funding Rounds

$17.0m

Money raised

Synhelion is a technology company converting solar energy, waste carbon dioxide, and water into synthetic fuel.

Location:

Key people:

1

Funding Rounds

$20.0m

Money raised

NovaSolix is developing rectifying carbon nanotube antennas that convert light to electricity from the entire solar spectrum as a method of producing clean and inexpensive energy.

Location:

Key people:

4

Funding Rounds

$238.4m

Money raised

Offers financing for solar solutions on residential homes.

5

Funding Rounds

$49.6m

Money raised

A company offering online trade education through mobile, desktop, and virtual reality applications.

7

Funding Rounds

$695.0m

Money raised

Aurora Solar is a San Francisco-based developer of solar design, proposal, and sales software.

2

Funding Rounds

$1.9m

Money raised

Edgehog is a Montreal-based company that makes omni-directional anti-reflection (OAR) glass, mainly for use in solar panels.

Location:

Key people:

10

Funding Rounds

$64.5m

Money raised

Pexapark AG is a blockchain company founded in 2017 by Michael Waldner, Florian Müller and Luca Pedretti.

Location:

Key people:

12

Funding Rounds

$187.2m

Money raised

Oxford PV is a London-based developer of perovskite thin-film solar cells.

9

Funding Rounds

$812.4m

Money raised

BrightSource Energy is an Oakland, California-based company founded in 2006 by Arnold Goldman.

6

Funding Rounds

$2.1b

Money raised

Octopus Energy is a company that offers retail electricity and gas supplies, and specializes in sustainable energy.

Location:

Key people:

5

Funding Rounds

$2.1m

Money raised

Modular and compact unit that provides renewable energy and clean water in remote areas.

Key people:

3

Funding Rounds

$191.0m

Money raised

Miasolé is a thin-film solar producer founded in 2004.

12

Funding Rounds

$200.8m

Money raised

Sono Motors is a car company manufacturing solar electric vehicles founded in 2016 by Jona Christians, Laurin Hahn and Navina Pernsteiner.

Location:

Key people:

7

Funding Rounds

$27.5m

Money raised

Raptor Maps is a company that is building software with the use of drones and machine vision to help farms increase productivity.

1

Funding Rounds

$40.0k

Money raised

Aerial Power is a London-based company founded by Ridha Azaiz.

Location:

Key people:

1

Funding Rounds

$10.5m

Money raised

Angaza is an enterprise cloud computing and software development company creating a pay as you go platform for manufacturing and distribution companies to sell their products to customers living off the grid.

1

Funding Rounds

$3.1m

Money raised

Solstice connects households and businesses to shared renewable projects in their community, and their software manages the customer experience for the life of the 20-year project. By giving ordinary Americans access to clean energy at a guaranteed discount, Solstice unlocks the market for the 77 percent of households that cannot install rooftop solar on their homes. Solstice was founded on the belief that every household can be powered by affordable renewable energy, regardless of their income, their rooftop, or other markers of privilege.

1

Funding Rounds

$11.0m

Money raised

D.light Design is a Berkeley, California-based company founded in 2007 by Sam Goldman, Ned Tozun and Adrian Bock.

2

Funding Rounds

$1.3m

Money raised

ZunRoof is a home-tech company that specializes in solar rooftop systems. The company is founded by Pranesh Chaudhary and Sushant Sachan in 2016.

8

Funding Rounds

$269.8m

Money raised

Zolar is a photovoltaic solar manufacturer founded in 2016 by Gregor Loukidis.

Location:

Key people:

11

Funding Rounds

$278.0m

Money raised

ZOLA Electric designs, manufactures, installs and sells solar backed systems for homes mainly in the rural and off-grid areas in Africa.

1

Funding Rounds

$14.0m

Money raised

Borrego Solar Systems is a El Cajon, California-based developer and operator of commercial, residential, and public sector grid connected solar electric systems.

1

Funding Rounds

$20.0m

Money raised

Posigen is a St. Rose, Louisiana-based company specializing in residential solar products and energy efficiency services for low-to-moderate income areas.

Key people:

2

Funding Rounds

$7.1m

Money raised

SenseHawk is a SaaS platform for processes and cost management in the development, construction, and operation of solar sites.

Key people:

1

Funding Rounds

$30.0m

Money raised

Ubiquitous Energy is a Redwood City, California-based company founded in 2011 by Miles Barr.

2

Funding Rounds

$3.0m

Money raised

Genability is a San Francisco-based company founded in 2010 by Jason Riley.

Location:

Key people:

1

Funding Rounds

$9.0m

Money raised

Arnergy is a Lagos-based company founded in 2013.

Location:

5

Funding Rounds

$57.3m

Money raised

Tigo Energy builds hardware and software intelligence into solar energy installations, making them more efficient, more manageable, and safer.

5

Funding Rounds

$291.7m

Money raised

Battery Resourcers is a company that offers a closed-loop cathode material supply chain solution

Key people:

9

Funding Rounds

$41.3m

Money raised

MTPV develops and deploys thermophotovoltaic chips for the conversion of industrial waste heat into electricity.

3

Funding Rounds

$11.1m

Money raised

Glint Solar is a solar developer software provider founded in 2020 by Harald Olderheim , Even Kvelland and John Modin.

Location:

Key people:

3

Funding Rounds

$12.3m

Money raised

Scanifly is a drone-based software modelling company helping automate and centralize daily tasks for the solar power industry.

Key people:

4

Funding Rounds

$6.9m

Money raised

EnergySage is a Boston-based company offering solar power product comparison and carbon offset programs.

Location:

Key people:

4

Funding Rounds

$49.1m

Money raised

David Energy is an energy company that leverages advanced technology to transform the way electricity is consumed, managed, and distributed.

Location:

Key people:

2

Funding Rounds

$944.0k

Money raised

Swiftmile is a company founded by Colin Roche, Keith Moravick and Leo Vera.

Location:

Key people:

7

Funding Rounds

$25.3m

Money raised

Insolight is a solar panel manufacturer founded in 2015 by Laurent Coulot.

Location:

Key people:

4

Funding Rounds

$87.9m

Money raised

Sunfolding is a San Francisco-based solar tracking company developing and building infrastructure for solar farms

4

Funding Rounds

$44.5m

Money raised

California-based start-up which sells PV products direct to consumers and installs solar systems.

Key people:

8

Funding Rounds

$65.5m

Money raised

Operator of fast-charging stations for EVs powered by renewable energy from the sun and wind.

Location:

Key people:

9

Funding Rounds

$742.8m

Money raised

Enpal is a solar power systems for homeowners founded in 2017.

2

Funding Rounds

$95.0m

Money raised

dcbel develops technology and designs products that put people at the center of the modern energy ecosystem. The company was founded in 2015 on the principle that everyone deserves clean, reliable and sustainable energy to live a life without compromise.

4

Funding Rounds

$25.0m

Money raised

ecoligo is a company founded in 2016 by Martin Baart.

Location:

Key people:

5

Funding Rounds

$16.9m

Money raised

Swift Solar is a U.S.-based startup developing lightweight and flexible solar panels that are both cheaper and more efficient than conventional panels.

Key people:

3

Funding Rounds

$26.1m

Money raised

UGE is a New York City and Toronto-based operator and distributor of solar energy.

Key people:

1

Funding Rounds

$199.6k

Money raised

Clean Power Research is a company founded in 1998 by Tom Hoff.

2

Funding Rounds

$35.0m

Money raised

Palmetto is a company founded in 2008.

2

Funding Rounds

$30.0m

Money raised

Orb Energy is a solar energy company headquartered in Bangalore, India, founded by Damian Miller and NP Ramesh in 2006.

5

Funding Rounds

$167.5m

Money raised

Malta Inc is a company storing renewable energy in molten salt founded by X.

3

Funding Rounds

$180.0m

Money raised

Terabase Energy is an energy Company founded in 2019.

2

Funding Rounds

$10.6m

Money raised

Leap enables real-time automated trading for DERs on global energy markets, regardless of capacity, availability and location.

3

Funding Rounds

$25.9m

Money raised

Morgan Solar is a Toronto-based provider of low-cost solar power applications.

9

Funding Rounds

$145.0m

Money raised

Solexant is a San Jose, California-based biotechnology company.

2

Funding Rounds

$4.0m

Money raised

3Degrees is a San Francisco-based provider of carbon offset and renewable energy services and solutions.

Key people:

2

Funding Rounds

$79.0k

Money raised

RatedPotheyr offers pvDesign, the leading cloud-based software to design & engineer utility-scale solar photovoltaic plants in seconds.

Location:

Key people:

2

Funding Rounds

$17.2m

Money raised

Enode is a SaaS-based platform to integrate with energy assets founded in 2020 by Henrik Langeland, Thorvald Thorsnes and Nikolai Heum.

3

Funding Rounds

$14.9m

Money raised

Platform providing homes and buildings with both electricity and hot water through solar technology.

Location:

Key people:

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:

7

Funding Rounds

$72.2m

Money raised

Developer of a proprietary technology designed to protect and accelerate capital invested in residential and commercial distributed energy assets.

Location:

Key people:

1

Funding Rounds

$5.3m

Money raised

Dracula Technologies is a company that generates sustainable energy.

Location:

Key people:

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