Top 76 Clean (Renewable) Energy startups

Updated: Feb 18, 2026
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Clean Energy startups generate and distribute energy from renewable sources, basically solar and wind.
1
Tem
Country: UK | Funding: $91.9M
tem is developing RED - an AI platform for the energy market that helps companies purchase clean, renewable energy directly from producers, reducing dependence on wholesalers and energy brokers and transforming the way electricity is purchased and sold. This platform is the transaction layer that underlies how energy is priced and settled. Companies that use half-hourly meter and can switch supplier - are ready to connect to RED and start saving up to 30%. tem also helps generating companies earn more through transparent pricing, fast quotes and reliable, timely payments. To date, the company has processed over 2 TWh of energy transactions in the UK.
2
Tesla
Country: USA | Funding: $20.2B
Tesla is Elon Musk's automotive and clean energy company. It develops and manufactures popular electric vehicles, home energy storage systems, solar panels, solar roof tiles and related products and services for residential and industrial customers. Tesla sources its car and home batteries (Powerwall) from three suppliers: CATL, LG Energy Solution and Panasonic, the latter of which has located part of its battery production at the Tesla Gigafactory Nevada. Tesla is also currently expanding its own battery production capacity. Tesla also manufactures Tesla Solar Roof and Tesla Solar Inverter, while regular solar panels it buys from other companies. For larger customers Tesla provides an online platform that enables automated real-time demand forecasting and energy management, as well as a comprehensive Megapack energy storage system. For residential customers, the company operates a virtual energy company in Texas called Tesla Electric which controls the network of Powerwalls.
3
Avaada Energy
Country: India | Funding: $3.7B
Avaada Energy is committed to provide affordable, clean and abundant power for India. For us, it is a new journey. A journey fuelled by our passion for sustainable energy and backed by our credentials and the trust of our stakeholders.
4
Sunnova
Country: USA | Funding: $3.2B
Sunnova provides low-cost solar power to homes. It owns the equipment, installs it, and also eventually sells the electricity it creates to customers.
5
Octopus Energy
Country: UK | Funding: $2.9B
Octopus Energy develops cloud-based smart grid platform and provides fair prices forever and greener energy from the UK's largest investor in solar generation. It uses an innovative AI and data-based platform to balance loads around the grid.
6
Nexamp
Country: USA | Funding: $2.4B
Nexamp is bringing clean energy to homeowners and communities everywhere, and helping them save up to 10% on electricity costs without installing rooftop solar panels.
7
Palmetto
Country: USA | Funding: $2.2B
Palmetto is the leading clean technology software and fulfillment company.
8
Silicon Ranch
Country: USA | Funding: $2.1B
Silicon Ranch developer, owner and operator of solar energy facilities in US.
9
Acciona
Country: Spain | Funding: $2.1B
ACCIONA is the development and management of infrastructure, renewable energy, water, and services.
10
energyRe
Country: USA | Funding: $1.8B
energyRe is at the forefront of North America's energy transition. Building and delivering reliable clean power directly to where people live is not only our opportunity—it is our responsibility.
11
BrightNight
Country: USA | Funding: $1.6B
Bright Night provides renewable power solutions in a safe and reliable way.
12
Aira
Country: Sweden | Funding: $710M
Aira operates as a clean energy-tech company driving the clean energy revolution with air source heat pumps.
13
AES Solar
Country: USA | Funding: $700M
AES Distributed Energy creates solar plus storage facilities, which includes systems that can hold and release solar energy at will.
14
Arcadia
Country: USA | Funding: $575.5M
Arcadia Power is a nationwide home energy platform providing clean energy and savings.
15
Ovo Energy
Country: UK | Funding: £447M
OVO Energy is an independent energy technology company and supplier. OVO also installs world’s most advanced storage heaters
16
CrossBoundary Energy
Country: Kenya | Funding: $310M
CrossBoundary is an investment company that dedicate its funds to commercial and industrial solar in Africa.
17
Brighte
Country: Australia | Funding: $306.5M
Brighte is a digital credit platform for financing home energy improvements.
18
Fotowatio Renewable Ventures
Country: Spain | Funding: $284.9M
Fotowatio Renewable Ventures is providing comprehensive renewable energy solutions across the globe.
19
Zolar
Country: Germany | Funding: €259M
ZOLAR is an online provider of solar systems enables the entry into the private energy supply for private households.
20
Enviria
Country: Germany | Funding: €207.5M
ENVIRIA offers companies easy and safe access to scalable energy-as-a-service solutions and the renewable energy ecosystem.
21
BBOXX
Country: UK | Funding: $215M
BBOXX designs, manufactures, and distributes plug and play solar systems. It also offers pay-as-you-go solar power. BBOXX Power DC product range is closed DC systems in standardised sizes. BBOXX Hub brings the smart capabilities of remote monitoring and control to larger capacity systems and projects. BBOXX Pulse is a comprehensive management platform that enables growth of next generation utility businesses.
22
Modern Energy
Country: USA | Funding: $178.9M
Modern Energy is an energy asset management firm that invests in businesses that bring emerging energy technologies to market and the energy resources those businesses produce. From energy efficiency in the United States to solar projects in Brazil to virtual power plants in the United Kingdom, Modern supports leaders in the transition to a digital energy ecosystem.
23
Elvy Energy
Country: Sweden | Funding: $157M
Elvy Energy provides a novel method of energy consumption through the installation of solar panels, heat pumps, and battery systems.
24
LevelTen Energy
Country: USA | Funding: $139.6M
LevelTen is the safest, most cost-effective way for C&I customers to purchase renewable energy.
25
Fuse Energy
Country: UK | Funding: $100.7M
Fuse Energy offers commission-free energy; 10x cheaper; 10x better, and 100 per cent renewable energy.
26
ComBio
Country: Brazil | Funding: $90M
ComBio Energia Provide energy generation solutions with renewable sources, creating, growing, and long-term economic value. They develop projects for steam generation and cogeneration of electricity with biomass, which promote environmental improvements and significant cost reductions for customers in the industrial segment.
27
Amber Electric
Country: Australia | Funding: $90M
Amber Electric is making it easier, and more affordable to buy renewables to Australian households
28
Wetility
Country: South Africa | Funding: $78.5M
Wetility has created an affordable solar energy installation product tailored to residential properties in South Africa.
29
Yellow
Country: South Africa | Funding: $59.3M
Yellow brings life changing products like home solar systems to customers in Africa
30
Cherry Street Energy
Country: USA | Funding: $52.7M
Cherry Street Energy operates as a renewable energy company. Its customers purchase solar power at a competitive rate. Each customer benefits from a comprehensive solar experience, as well as energy insights and analytics.
31
ekWateur
Country: France | Funding: €47.5M
ekWateur provides an innovative and truly seamless customer experience in a collaborative environment, while offering a 100% green energy at a competitive price. The company also has an ambitious and clear vision for energy services development to complement its energy retail business.
32
National Renewable Network
Country: Australia | Funding: A$78.2M
The National Renewable Network is a linked network of solar and storage systems that transforms the way energy is supplied.
33
Accelergen Energy
Country: USA | Funding: $50M
Accelergen Energy is a greenfield energy developer of utility-scale solar, solar plus storage and standalone storage projects
34
Gridwiz
Country: South Korea | Funding: ₩66B
Gridwiz is an energy company that provides efficient, economic, safe and sustainable energy services for energy users.
35
Energiya Global
Country: Israel
Energiya Global develops affordable solar projects worldwide, with the goal of providing clean electricity for 50 million people by 2020.
36
Ostrom
Country: Germany | Funding: $45.7M
Ostrom is an energy management platform that makes green electricity affordable and straightforward for households in Germany and Europe.
37
Rensource Energy
Country: Nigeria | Funding: $43.6M
Rensource allows qualifying companies throughout Nigeria and West Africa to start selling Power-as-a-Service (PaaS) to their customers.
38
trawa
Country: Germany | Funding: €36.4M
trawa offers software solutions and matching electricity procurement services for businesses. The offering enables energy-intensive companies to access renewable energy from solar- and wind parks and helps them decarbonize their operations while at the same time saving cost and protecting themselves against future energy crises.
39
Odyssey Energy Solutions
Country: USA | Funding: $39.1M
Odyssey Energy Solutions is an industry platform to simplify, streamline, and reduce the costs of developing and financing energy projects.
40
Holaluz
Country: Spain | Funding: €36.3M
Holaluz supplies green power and gas to SMBs and households across Spain, as the first independent energy company in the country.
41
Arnergy
Country: Nigeria | Funding: $27M
Arnergy is a distributed utility leveraging on internet of things (IOT) to providing reliable solar power for businesses in emerging markets
42
Easy Solar
Country: Sierra Leone | Funding: $19.8M
Last-mile distribution company making energy, durable goods and financial services affordable and accessible for through pay-as-you-go tech
43
TRENDE
Country: Japan | Funding: ¥2.9B
TRENDE is an online renewable energy retailer selling electricity to residential customers in Japan
44
Common Energy
Country: USA | Funding: $16.5M
Common Energy is a servicing platform for clean energy developers.
45
WattBuy
Country: USA | Funding: $16.6M
WattBuy aims to give households a simple platform to shop for an electricity provider in states where that is an option. Users are able to upload their electricity usage and compare available plans to save money or buy electricity from a solar or wind energy provider.
46
Reonic
Country: Germany | Funding: €13M
Reonic is a software company that accelerates the energy transition economically and ecologically.
47
Ever.green
Country: USA | Funding: $11.8M
Evergreen creates a marketplace for clean energy projects that ensures and quantifies the impact of every Renewable Energy Certificate.
48
Granular
Country: France | Funding: €10.5M
Granular is developing internationally recognised standards for hourly certificates and is providing SaaS tools to trade and manage time-stamped energy certificates (or ‘hourly energy certificates’) that enable consumers to verify when and where their energy is coming from carbon-free sources.
49
Plan-B Net Zero
Country: Switzerland | Funding: €9.2M
Plan-B Net Zero is a renewable energy and sustainability services company that offers energy storage solutions, and charging infrastructure.
50
Reel
Country: Denmark | Funding: €7.3M
Reel is setting out to fight climate change by transforming electricity procurement, offering a way for companies to buy electricity on commercially attractive terms. In addition, Reel ties companies’ electricity procurement directly to the construction of new solar and wind parks – so the renewable energy transition is further supported.
Alexander Gillet
Editor: Alexander Gillet
Alexander Gillet is a senior editor for EnergyStartups. He has a deep background in energy sector and startups. Alexander graduated from Emlyon Business School, a leading French business school specialized in entrepreneurship. He has helped several non-profit organizations dedicated to promoting environmental education and sustainability and has written over 250 articles on energy technology for various websites. In his free time, Alexander enjoys yoga, camping and exploring the Blue Ridge Mountains. You can contact Alexander at alexgillet(at)energystartups(dot)com