Top 140 Solar Energy startups

Updated: Dec 06, 2025
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These startups develop new solar energy technologies, create solar farms and install solar roofs.
1
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.
2
Country: USA | Funding: $4.9B
Recurrent Energy, a subsidiary of Canadian Solar Inc. (global renewable energy company) that is building one of the world's largest and most geographically diversified platforms for developing, owning and operating solar and energy storage projects. It is a leading global developer, owner and operator of solar and energy storage systems, with over 14 GW of project capacity under long-term operation and maintenance agreements.
3
Country: Germany | Funding: €4.2B
Enpal is a photovoltaics leasing firm that provides solar power systems for homeowners with no money upfront.
4
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.
5
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.
6
Country: USA | Funding: $2.2B
Palmetto is the leading clean technology software and fulfillment company.
7
Country: USA | Funding: $2.1B
Silicon Ranch developer, owner and operator of solar energy facilities in US.
8
Country: USA | Funding: $2B
Pine Gate Renewables is a U.S. developer of 2-25 MW utility-scale solar farms.
9
Country: Brazil | Funding: $2B
Atlas Renewable Energy, a renewable and clean energy startup that develops, builds and operates solar and wind projects in Latin America
10
Country: USA | Funding: $1.2B
Nextracker creates smart solartracker solutions that improve the performance of solar PV plants.
11
Country: Kenya | Funding: $950M
Sun King is one of the largest solar companies in Africa and Asia
12
Country: USA | Funding: $700M
AES Distributed Energy creates solar plus storage facilities, which includes systems that can hold and release solar energy at will.
13
Country: Kenya | Funding: $590.2M
M-Kopa Solar provides customers with solar lamps that can also recharge their mobile phone or radio.
14
Country: USA | Funding: $523.5M
Aurora Solar is a SaaS company that uses aerial imagery to assess solar installation projects.
15
Country: UAE | Funding: $492.3M
Yellow Door Energy is a leading solar developer. Yellow Door Energy manages all stages of the solar plant and you pay a monthly solar bill once the solar plant starts producing electricity.
16
Country: USA | Funding: $466.6M
SoloPower is a producer of thin-film photovoltaic cells and modules that help solar electricity generation and adapt to virtually limitless site-specific applications.
17
Country: Israel | Funding: $454.8M
SolarEdge Technologies, global leader in the DC power optimizer market. SolarEdge developed the DC optimized inverter solution that changed the way power is harvested and managed in photovoltaic (PV) systems. The SolarEdge intelligent inverter solution maximizes power generation while lowering the cost of energy produced by the PV system, for improved RoI.
18
Country: Italy | Funding: €426.5M
Sunprime is a fast-growing Independent Power Producer based in Italy focused on Solar C&I, and smart homes segments.
19
Country: Tanzania | Funding: $315.5M
ZOLA Electric designs renewable energy solutions based on the latest in solar, battery and power electronics technology. ZOLA Electric’s solar systems can be bought over time using PAYGo micro-finance leasing and mobile money payments. ZOLA Electric powers more than 180,000 homes and businesses across Tanzania
20
Country: Germany | Funding: €259M
ZOLAR is an online provider of solar systems enables the entry into the private energy supply for private households.
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