India has hundreds of solar companies, and the top solar companies in India are very different from one another. Some make solar panels in large factories. Some design and install solar systems on your roof. Others build huge power plants that sell electricity to the grid. Picking the wrong type can mean paying for services you do not need.
This guide explains each type in simple words. It also describes ten of the best solar companies in India, what each one does, and who it suits. Use it to build a shortlist, then confirm details directly with each company.
What Does a Solar Company Actually Do?
A solar company helps you produce your own electricity from sunlight. But "solar company" covers four very different jobs, and mixing them up is the most common mistake buyers make. Knowing which type you need saves time and money.
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Manufacturers make the panels, cells, and inverters
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EPC companies design and build your full system (EPC means engineering, procurement, and construction)
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Power plant developers build large plants and sell the electricity
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Resellers sell ready-made kits through local shops
How to Choose a Solar Company in India
The right company depends on what you are building. A home owner needs a reliable installer, while a factory needs custom design and good after-sales support. Look at a company's finished projects instead of its advertising. Good solar energy equipment and a clear warranty matter as much as price.
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Years in business and total capacity installed
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Finished sites you can visit or call about
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Written warranties on panels, inverters, and workmanship
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Who handles repairs and monitoring after installation
Quick checklist:
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Decide whether you need panels, an installer, or a power plant.
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Check the company's experience with projects like yours.
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Visit one finished site or call a past client.
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Compare warranties in writing.
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Get three quotes before you decide.
Top 10 Solar Companies in India
The list below covers each company in simple terms. Read each profile for what the company does best and where it may not fit.
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What the company does
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Who it suits
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Notable work
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Where it may not fit
1. Soleos Energy Limited:
Soleos Energy is an Ahmedabad-based solar company with more than 12 years of experience. It plans, builds, and maintains solar systems, mostly for factories, businesses, and large solar parks. It works as an EPC company, which means one team handles design, equipment, and installation. You can read how this works for factories in our guide to industrial solar solutions.
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Over 450 MW of solar capacity delivered
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More than 160 projects completed
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Projects in Spain, Portugal, the UK, UAE, Germany, and Africa
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Rooftop, ground-mount, carport, and agrivoltaic systems (solar panels combined with farming)
2. Tata Power Solar:
Tata Power Solar is the solar business of the Tata Power group. It makes solar panels and cells at a factory in Bangalore, and it also installs systems for homes, businesses, and utilities. One of its projects is a 101.6 MWp floating solar plant in Kerala, where panels sit on water instead of land. A large, well-known brand suits buyers who value an established name.
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Residential, commercial, and industrial products
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Panel and cell factory in Bangalore
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Large ground-mounted projects across India
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Floating solar plant in Kerala
3. Adani Solar:
Adani Solar is one of India's largest solar panel makers. It is called "integrated" because it makes many panel parts itself instead of buying them. Its panels use technologies called TOPCon and Mono PERC, which are ways to turn more sunlight into power. Our guide to TOPCon solar panels explains them simply. It focuses on large projects, so it may not suit a small rooftop.
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Integrated panel manufacturing
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Single-sided and double-sided panels
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TOPCon and Mono PERC technology
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Focus on large solar parks
4. Vikram Solar:
Vikram Solar makes solar panels and also builds solar plants. It is known for large projects, such as a 300 MW plant in Rajasthan. For scale, a typical home system is around 3 to 5 kW, and 300 MW is about 300,000 kW. The company sells to customers in many countries. Its strength is size, so it suits developers and large buyers better than individual homes.
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Panel manufacturing and project building
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300 MW project in Rajasthan
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Customers in many countries
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Best for large commercial and utility buyers
5. Waaree Energies:
Waaree Energies is a major solar panel maker that sells in India and abroad. Besides panels, it makes inverters, which are devices that turn panel power into the kind your home or factory can use. It also offers energy storage and solar water pumps. In 2022 it bought Indo Solar to make more solar cells, the part that converts sunlight into electricity.
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Solar panels and inverters
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Energy storage and solar water pumps
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Indo Solar acquisition in 2022
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Wide dealer network across India
6. RenewSys:
RenewSys makes solar panels and the materials inside them. These include solar cells, encapsulants (a clear film that seals the cells), and backsheets (the protective back layer). These parts affect how long a panel lasts in heat and rain. The company has three factories in India and exports to many countries. Most buyers meet its products through an installer, not directly.
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Solar panels and solar cells
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Encapsulants and backsheets
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Three manufacturing plants in India
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Sells mainly to developers and installers
7. Loom Solar:
Loom Solar is based in Faridabad and is popular with home owners and small shops. It sells ready-to-use kits that include panels, inverters, and lithium batteries. A large network of resellers makes it easy to buy locally and compare prices. It suits small rooftop needs well. Large factories usually need a custom design, which a kit seller may not provide.
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Monocrystalline panels
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Inverters and lithium batteries
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Large reseller network
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Best for homes and small businesses
8. Jakson Group:
Jakson Group started by making diesel generators and later moved into solar. It now builds solar plants and offers turnkey services, meaning one company handles the full project from start to finish. It also makes solar panels at a plant in Greater Noida. Businesses that still want backup generators may like its approach, which combines solar with other power sources.
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Solar power plant development
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Turnkey project services
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Panel manufacturing in Greater Noida
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Generator and hybrid power products
9. Azure Power:
Azure Power builds and runs large solar plants and sells the electricity to utilities. This is called utility-scale solar. It does not mainly install rooftop systems, so most homes and small businesses will not buy from it directly. In 2017 it issued a green bond, which is a loan raised specifically for clean energy projects. It suits utilities, governments, and investors.
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Large grid-connected solar plants
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Owns and operates its plants
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Green bond issued in 2017
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Works with utilities and government buyers
10. Mahindra Susten:
Mahindra Susten designs, builds, and operates solar projects for businesses and investors. It also makes a product called the Single Axis Solar Tracker (MSAT100). A tracker is a frame that slowly tilts panels to follow the sun, which helps a plant produce more power. The company also sells the electricity it generates, which makes it an independent power producer.
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Single Axis Solar Tracker (MSAT100)
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Design, construction, and maintenance
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Commercial and residential installations
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Independent power producer in India
How Solar Savings Work
Solar saves money because every unit of power your panels make is a unit you do not buy from the grid. The example below uses simple, made-up numbers to show the idea. Your own result depends on your electricity rate, roof space, and system cost, so ask any company to show its calculation.
Say your system makes 1,000 units a month and the grid charges ₹8 a unit. You avoid ₹8,000 each month. If you do not want to pay for the system upfront, you can look into solar PPAs, where you pay only for the power you use.
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Savings equal units produced multiplied by your grid rate
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Payback time is the system cost divided by yearly savings
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Panels typically last 25 years or more
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Net metering lets you send extra power to the grid
What Is Next for Solar in India
India's goal is 500 GW of renewable energy capacity by 2030. Solar panels are becoming more efficient, and batteries are getting cheaper, which lets people use solar power at night. If you want to see what is driving this growth, read our guide on the factors shaping the future of solar energy.
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Cheaper batteries for evening and night use
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Panels that make more power from the same roof
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Faster approvals for rooftop projects
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More jobs in installation and maintenance
Conclusion
The best choice among the top solar companies in India depends on what you need. Manufacturers suit bulk buyers, utility developers suit large plants, and EPC companies suit anyone who wants a complete system built. Start by deciding which type you need, then compare two or three companies on experience, warranty, and support.
FAQs:
1. Which are the top solar companies in India?
Well-known names include Soleos Energy, Tata Power Solar, Adani Solar, Vikram Solar, Waaree Energies, RenewSys, Loom Solar, Jakson Group, Azure Power, and Mahindra Susten. They serve different needs, from home kits to large power plants.
2. How do I choose a good solar company?
Check how long it has been in business and ask to see finished projects. Compare written warranties and find out who handles repairs. Get at least three quotes before deciding.
3. What is the difference between a solar manufacturer and an EPC company?
A manufacturer makes panels and equipment. An EPC (engineering, procurement, and construction) company designs and builds your full system, often using panels from several makers.
4. How long does solar take to pay for itself?
It depends on your electricity rate and system cost. Many systems repay their cost within a few years, and panels keep working for 25 years or more.
5. Can I go solar without paying the full cost upfront?
Yes. Some companies offer solar PPAs or loans. Ask each company which options it provides and compare the total cost over time.