India’s push toward renewable energy has opened doors for hundreds of solar companies, but only a few have truly made an impact at scale. From large infrastructure players to innovative solar EPC providers, these organisations are driving the shift toward sustainable power. Below is an overview of the top ten solar companies shaping the future of clean energy in India.
| Rank | Company Name | Headquarters | Specialisation | Notable Projects |
| 1 | Tata Power Solar Systems Ltd. | Bengaluru | Solar EPC & Rooftop Installations | NTPC 100 MW Solar Project |
| 2 | Adani Solar | Ahmedabad | Solar Manufacturing & EPC | Kamuthi Solar Power Plant |
| 3 | Vikram Solar | Kolkata | PV Module Manufacturing & EPC | NTPC 130 MW Project |
| 4 | Renew Power | Gurugram | Utility-Scale Solar & Wind | Rajasthan 300 MW Solar Farm |
| 5 | Waaree Energies Ltd. | Mumbai | PV Modules & EPC | Surat Solar Rooftop Project |
| 6 | Azure Power | New Delhi | Solar Power Generation | 200 MW Rajasthan Project |
| 7 | Loom Solar Pvt. Ltd. | Faridabad | Residential Solar Solutions | PAN-India Rooftop Installations |
| 8 | Mahindra Susten | Mumbai | EPC & Energy Storage Solutions | Telangana 50 MW Project |
| 9 | Sterling and Wilson Solar Ltd. | Mumbai | Global EPC Solar Projects | Abu Dhabi 1177 MW Project |
| 10 | Ujaas Energy Ltd. | Indore | Solar Park & Rooftop Projects | Madhya Pradesh Solar Park |
Tata Power Solar Systems Ltd.
Tata Power Solar is one of India’s earliest and most trusted solar brands. A subsidiary of Tata Power, the company has decades of experience in renewable energy. Its expertise spans utility-scale installations, rooftop systems, and solar water pumps.
With projects across government, corporate, and residential sectors, Tata Power Solar has installed over 1 GW of rooftop and distributed solar capacity. One notable example is the NTPC 100 MW solar plant in Anantapur, which showcases their large-scale project execution skills.
Key strengths include:
- Strong presence in both urban and rural solar markets
- High-quality photovoltaic modules
- Comprehensive project management from design to maintenance
Adani Solar
Adani Solar, part of the Adani Group, is among the largest vertically integrated solar companies in India. The company operates one of the biggest solar cell and module manufacturing facilities in the country, located in Mundra, Gujarat.
Their Kamuthi Solar Power Project in Tamil Nadu, one of the world’s largest solar farms, highlights their ability to deliver mega-scale energy solutions.
What sets Adani Solar apart:
- Integrated manufacturing for quality control
- Advanced technology in mono PERC and bifacial modules
- Strong international presence and export capabilities
Vikram Solar
Kolkata-based Vikram Solar is a globally recognised solar energy company focusing on module manufacturing, EPC solutions, and operations & maintenance. They are known for their high-efficiency panels and contribution to both domestic and international solar projects.
Their collaboration with NTPC and other public sector units has solidified their position in India’s renewable energy ecosystem.
Notable highlights:
- Over 3.5 GW of solar modules supplied globally
- Robust R&D with emphasis on durability and efficiency
- Diverse project portfolio spanning rooftops to large-scale plants
Renew Power
Renew Power is a key player in India’s renewable energy sector, with an impressive mix of solar and wind projects. Founded in 2011, it has quickly grown into one of the country’s largest clean energy producers.
Their focus lies primarily on utility-scale solar farms, such as the 300 MW solar project in Rajasthan, which contributes significantly to India’s renewable capacity.
Distinct features:
- Over 13 GW of total renewable energy capacity
- Strong corporate sustainability framework
- Active in carbon reduction initiatives and energy transition policies
Waaree Energies Ltd.
Waaree Energies, headquartered in Mumbai, has been manufacturing solar modules and offering EPC services for over three decades. The company has a vast distribution network across India and exports to 68+ countries.
Their Surat rooftop solar initiative and contribution to government-led programmes like PM-KUSUM have made them a reliable name for both individual and institutional solar needs.
Key highlights:
- Over 12 GW of module manufacturing capacity
- Strong domestic and international partnerships
- High-quality solar PV modules certified by global standards
Azure Power
Founded in 2008, Azure Power is one of India’s most prominent independent solar power producers. Known for its long-term Power Purchase Agreements (PPAs) with government entities, Azure Power develops, owns, and operates large solar projects across India.
Its projects in Rajasthan and Gujarat showcase large-scale utility execution. The company’s transparent operations and focus on sustainability make it an investor favourite in the renewable energy space.
Salient features:
- Over 2 GW of operational solar capacity
- Focus on grid-connected and utility-scale projects
- Listed on the New York Stock Exchange (NYSE: AZRE)
Loom Solar Pvt. Ltd.
Loom Solar, based in Faridabad, specialises in residential and small commercial solar solutions. It’s known for its easy-to-install panels and energy-efficient lithium batteries.
The company caters to the growing demand for rooftop systems and off-grid solar setups, making it a trusted name for households seeking affordable solar energy.
Unique strengths:
- High-efficiency solar panels with up to 22% output
- PAN-India service network and doorstep delivery
- Online platform for easy solar system selection and purchase
Mahindra Susten
Part of the Mahindra Group, Mahindra Susten delivers comprehensive solar EPC solutions, from design to commissioning and maintenance. The company’s portfolio includes utility-scale and distributed solar projects, as well as energy storage and smart grid solutions.
Their 50 MW Telangana project stands as a testament to their technical capability and execution standards.
Core advantages:
- Integrated EPC and O&M services
- Expertise in hybrid and off-grid systems
- Strong sustainability-driven corporate ethos
Sterling and Wilson Solar Ltd.
A subsidiary of the Shapoorji Pallonji Group, Sterling and Wilson Solar is one of the world’s largest solar EPC companies. With operations in over 25 countries, it’s a dominant player not just in India but also globally.
The company executed the 1177 MW Noor Abu Dhabi project, one of the world’s largest single-site solar plants, showcasing its technical excellence.
Key takeaways:
- Global experience across complex terrains and climates
- Strong financial and technical backing from the parent group
- Over 14 GW of installed capacity worldwide
Ujaas Energy Ltd.
Ujaas Energy, headquartered in Indore, focuses on solar parks, rooftop installations, and operations & maintenance. The company was among the first in India to launch a “Solar Park” concept, enabling businesses to generate and sell solar power.
Their projects in Madhya Pradesh and Maharashtra highlight innovation and accessibility in solar energy adoption.
Strengths include:
- Pioneering solar park model
- Diverse offerings for businesses and individuals
- Long-term commitment to clean energy solutions
India’s Solar Growth Story and Market Overview
India’s solar energy market has experienced remarkable growth in the past decade. The country crossed 70 GW of installed solar capacity by 2025 and is on track to achieve its renewable energy targets under the National Solar Mission.
Key drivers behind this progress include:
- Declining cost of photovoltaic technology
- Government initiatives like KUSUM, Solar Rooftop Scheme, and SECI tenders
- Corporate commitments to achieve net-zero emissions
States such as Rajasthan, Gujarat, and Tamil Nadu lead in solar capacity installation, while regions like Uttar Pradesh and Maharashtra are catching up rapidly.
Additionally, India’s domestic solar manufacturing ecosystem has gained a boost due to the Production Linked Incentive (PLI) scheme, encouraging companies like Adani, Tata Power, and Vikram Solar to expand production.
The source of this list is https://fintechrevo.com/
The Role of Solar Companies in India’s Renewable Transition
The contribution of solar companies goes beyond power generation. These firms are helping India move toward energy independence, rural electrification, and carbon reduction. From providing clean energy to remote villages to enabling corporates to achieve sustainability goals, solar enterprises play a crucial part in the country’s economic and environmental strategy.
The top players, particularly those with strong EPC and manufacturing capabilities, are expected to lead future innovations in solar storage, hybrid systems, and smart grid integration.
Final Thoughts
India’s solar sector has evolved from a niche market to a national priority, supported by robust government policies and corporate investment. Companies like Tata Power Solar, Adani Solar, and Vikram Solar have not only shaped the industry but also inspired a new generation of sustainable entrepreneurs.
As the nation aims for 500 GW of renewable capacity by 2030, these top solar firms will continue to play a defining role in ensuring a cleaner, more energy-secure future for India.
Important Questions
What factors should I consider when choosing a solar company in India?
When selecting a solar company, consider its installation track record, manufacturing quality, customer service, warranty period, and certifications. It’s also important to check whether the provider handles end-to-end services—such as design, installation, and maintenance—and whether it offers financing or government subsidy support for solar systems.
How much does it cost to install a residential solar panel system in India?
The cost of a solar panel setup for homes in India typically ranges between ₹50,000 to ₹1,00,000 per kilowatt, depending on the brand, efficiency, and installation complexity. Rooftop solar systems using monocrystalline panels tend to be slightly more expensive but offer better output compared to polycrystalline ones.
Are there government subsidies available for solar installations in India?
Yes, the Indian government provides several incentives under the Rooftop Solar Programme and state-level subsidy schemes. Residential users can get up to 40% subsidy for systems up to 3 kW, and commercial or industrial users can benefit from accelerated depreciation and net metering advantages.
Which Indian states have the highest solar energy potential?
Rajasthan, Gujarat, and Tamil Nadu lead in terms of solar power generation due to their high solar irradiance and availability of large open land areas. These states host several major solar parks and projects that contribute significantly to the country’s renewable capacity.
How long does it take to recover the investment in a solar power system?
The payback period for a solar power system in India typically ranges from 4 to 6 years, depending on energy consumption, local electricity tariffs, and the efficiency of the installed system. With rising electricity costs and falling solar prices, the return on investment continues to improve annually.
What kind of maintenance is required for solar panels in India’s climate?
Solar panels generally require minimal maintenance, but regular cleaning (at least once every two weeks) is recommended in dusty or humid regions to maintain performance. It’s also advisable to schedule annual inspections by the solar company to check for wiring, inverter efficiency, and potential shading issues.
Can solar energy be stored for nighttime use in India?
Yes, solar energy can be stored using lithium-ion or lead-acid batteries integrated into hybrid systems. Many residential and commercial setups now use energy storage solutions that allow users to access power at night or during grid outages, enhancing overall system efficiency and reliability.
