India’s solar energy sector has moved from being an emerging renewable-energy segment to becoming one of the most important parts of the country’s electricity transition. Rapid growth in solar installations, rooftop systems, utility-scale projects, solar pumps, battery storage and domestic manufacturing is creating opportunities for manufacturers, technology providers, EPC companies and consumers.
According to the Ministry of New and Renewable Energy (MNRE), India’s cumulative installed solar capacity reached 168.04 GW as of August 31, 2026, including 123.99 GW of ground-mounted solar, 32.59 GW of grid-connected rooftop solar, 4.83 GW of solar capacity associated with hybrid projects and 6.63 GW of off-grid solar.
The International Energy Agency (IEA) also reported that India added almost 50 GW of solar PV capacity during 2025, making solar the leading contributor to the country’s renewable-energy expansion.
Against this backdrop, Indian solar companies are expanding manufacturing capacity, adopting advanced technologies such as TOPCon and HJT, strengthening domestic supply chains and developing integrated solutions.
This article looks at 10 notable companies and brands operating across different parts of India’s solar ecosystem. The list is intended for awareness and industry understanding, not as an independently audited ranking of company performance.
India’s solar industry is being supported by several factors, including rising electricity demand, falling technology costs, government renewable-energy programmes, increasing rooftop adoption and the development of domestic manufacturing.
The scale of the sector is visible in MNRE’s latest figures. By August 2026, India had installed 168.04 GW of solar power, compared with only about 2.82 GW at the end of March 2014.
The IEA expects India’s electricity demand to grow at an average annual rate of around 6.4% through 2030. It forecasts solar PV generation to grow by an average of 24% annually, with solar’s share of total electricity generation approaching 18% by 2030.
This growth is creating demand for more solar modules, cells, inverters, batteries, mounting systems, EPC services and other components.
India is also trying to reduce dependence on imported solar components by expanding domestic manufacturing.
MNRE’s Approved List of Models and Manufacturers, or ALMM, plays an important role in this process. The ministry maintains approved lists for solar PV modules and cells, and only manufacturers and models meeting the applicable requirements are eligible for specified government and government-assisted projects, as well as certain open-access and net-metering projects.
In March 2026, the government also expanded the ALMM framework to include ingots and wafers, with the new requirement scheduled to take effect from June 1, 2028. The move is aimed at increasing domestic value addition further up the solar manufacturing chain.
The following companies have been selected because of their presence in solar manufacturing, project execution, energy solutions, residential solar, components or related technologies.
iNVERGY Power Supply operates in an important part of the solar ecosystem: inverters and energy-storage systems. Unlike companies that primarily manufacture solar modules, iNVERGY focuses on technologies that convert and manage electricity generated by solar systems.
Its product portfolio includes on-grid inverters, hybrid inverters, off-grid systems, residential energy-storage solutions, commercial and industrial energy-storage systems and utility-scale battery energy-storage solutions.
Its hybrid inverter range is designed to integrate solar generation, batteries and grid electricity, allowing energy to be managed according to the requirements of a home or business.
The company also offers hybrid systems with features such as battery-management communication, Wi-Fi-based monitoring, maximum-power-point tracking and high-efficiency operation. Its Hybrid OGH range, for example, includes models from 1.5 kW to 6.2 kW and supports smart monitoring.
Key areas: Solar inverters, hybrid systems, batteries, energy storage and power management.
Best suited for: Residential, commercial, industrial and utility-scale energy applications.
Tata Power Solar is one of the most established names in India’s solar industry and operates as part of the wider Tata Power renewable-energy ecosystem.
Its activities cover solar manufacturing, EPC services, rooftop solar, utility-scale projects and solar solutions for different customer categories.
One of its major manufacturing assets is the 4.3 GW solar cell and module facility in Tirunelveli, Tamil Nadu. TP Solar produced 2.8 GW of solar cells and 2.9 GW of modules during the first nine months of FY26, according to Tata Power.
The company’s FY26 annual report also lists 4.9 GW of solar cell and module manufacturing capacity across its operations.
Tata Power Renewable Energy had also crossed the 10 GW EPC execution milestone, comprising 9.7 GW of solar and 290 MW of wind projects, by January 2026.
Key areas: Solar modules, solar cells, EPC, rooftop solar, utility-scale projects and solar pumps.
Best suited for: Residential, commercial, industrial and large renewable-energy projects.
Adani Solar is a major Indian solar manufacturing business with an increasing focus on integrated production.
According to Adani Enterprises’ 2026 business review, the company operates 4 GW of solar cell capacity, 4 GW of module capacity and 2 GW of ingot-wafer capacity. It has also been expanding its TOPCon manufacturing capabilities.
The company has stated plans to add another 6 GW each of TOPCon cell and module capacity in FY2026–27. If completed as planned, its cumulative capacity would reach 10 GW each for cells and modules.
This emphasis on backward integration is significant because solar manufacturing is gradually moving beyond module assembly towards cells, wafers and ingots.
Key areas: Solar cells, modules, ingots, wafers and large-scale manufacturing.
Best suited for: Utility-scale solar projects, industrial applications and large renewable-energy developments.
Waaree Energies has built a large manufacturing and renewable-energy platform covering solar modules, cells and other clean-energy technologies.
The company currently states that it has 21.15 GW of solar module capacity and 5.4 GW of solar cell capacity. It describes these as the largest such capacities outside China.
Waaree’s activities extend beyond modules and cells into areas such as solar ingots, wafers, inverters, battery energy storage, transformers, green hydrogen and turnkey EPC solutions.
The company also reports more than 7.5 GW of renewable EPC portfolio and has highlighted its reliability-testing capabilities.
This diversified approach is important because the solar industry increasingly requires integrated supply chains rather than dependence on a single component.
Key areas: Solar modules, cells, EPC, storage, inverters and renewable-energy infrastructure.
Best suited for: Utility-scale, commercial and industrial solar projects.
Vikram Solar is another established Indian solar manufacturer with a significant focus on high-efficiency modules and expanding domestic manufacturing.
In August 2026, the company inaugurated a 6 GW solar PV module manufacturing plant at Gangaikondan in Tirunelveli, Tamil Nadu.
The company is also pursuing backward integration. In September 2026, Vikram Solar announced a ₹1,250 crore agreement with Avaada Electro for 1 GW of domestically manufactured ALMM-compliant N-type G12R TOPCon solar cells.
Vikram Solar has outlined a longer-term roadmap targeting 15.5 GW of module manufacturing capacity and 12 GW of cell manufacturing capacity through backward integration.
Key areas: Solar PV modules, high-efficiency technologies, domestic manufacturing and project solutions.
Best suited for: Utility-scale, commercial and premium solar installations.
Rayzon Solar represents the rapid expansion of newer Indian solar manufacturing companies.
The company began with a relatively small 40 MW manufacturing capacity in 2018. It subsequently expanded to 150 MW, 300 MW, 1.1 GW, 2.1 GW, 3 GW and then 6 GW by March 2025, according to its company profile.
Rayzon has stated an ambition to reach 10 GW of production capacity in 2026. This should be understood as a company target rather than treating the full 10 GW as already operational capacity.
The company's growth illustrates how quickly India's domestic module-manufacturing landscape is changing.
Key areas: Solar PV modules and large-scale manufacturing.
Best suited for: Utility-scale, commercial and cost-conscious solar projects.
Loom Solar has developed a strong presence in the residential solar market and offers solar panels, inverters, lithium batteries and complete rooftop solar systems.
Its current product range includes N-type TOPCon panels, HJT panels, bifacial modules and other residential solar products.
The company also provides different system sizes aimed at homes and small businesses. Its consumer-focused approach makes solar technology easier to access for customers who may not be looking for large industrial installations.
Loom Solar has also published detailed information about its manufacturing process, including cell cutting, stringing, lamination, electroluminescence testing, framing and final quality checks.
Key areas: Residential solar panels, rooftop systems, inverters and lithium batteries.
Best suited for: Homes, small businesses and distributed solar applications.
Saatvik Solar has emerged as a rapidly expanding participant in India's solar manufacturing industry.
Its Ambala facility operates at around 4.8 GW of annual module manufacturing capacity, while its broader expansion strategy includes integrated manufacturing in Odisha. The company reported FY26 production of 3,162 MW and an order book of about 5.89 GW as of March 31, 2026.
In August 2026, Saatvik Solar signed an agreement with the Odisha government for a proposed 3.6 GW solar cell manufacturing facility. Its Phase I plans include 2.4 GW of cell and 4 GW of module manufacturing capacity.
The company has also been advancing N-type TOPCon cell manufacturing and applied for ALMM List-II enlistment for its 2.4 GW Odisha cell facility.
These developments demonstrate the industry's movement towards greater backward integration.
Key areas: Solar modules, cells, TOPCon technology, EPC and integrated manufacturing.
Best suited for: Utility-scale and commercial solar projects.
Goldi Solar has significantly expanded its manufacturing footprint in Gujarat and has increasingly focused on automation and technology-driven production.
The company currently states that its annual solar PV module manufacturing capacity is 15.2 GW. It operates AI-powered manufacturing facilities in Gujarat and has been expanding its solar cell manufacturing capabilities to support greater backward integration.
Goldi Solar had earlier announced plans to increase module capacity from 3 GW to 14 GW and establish 4 GW of cell capacity. The company's latest information now puts its module capacity at 15.2 GW, showing how rapidly its expansion plans have progressed.
The company serves Indian and international markets and focuses on high-efficiency solar modules.
Key areas: Solar PV modules, automated manufacturing and solar technology.
Best suited for: Residential, commercial and utility-scale applications.
RenewSys occupies a distinctive position in India's solar ecosystem because it manufactures both solar modules and important components used inside PV modules.
The company describes itself as India's first integrated manufacturer of solar PV modules and key components including encapsulants, backsheets and solar cells. Its facilities span India and the Middle East, with products supplied to more than 50 countries.
In March 2026, RenewSys inaugurated a 3 GW AI-powered and fully automated solar module manufacturing facility at Khopoli, Maharashtra, taking its total module manufacturing capacity to 5.6 GW.
Its current manufacturing portfolio also includes encapsulants, backsheets and solar cells. In May 2026, its N-type TOPCon solar cells were added to MNRE's ALMM List-II.
RenewSys also received recognition as a Top Performer in the 2026 Kiwa PVEL PV Module Reliability Scorecard, according to the company.
Key areas: Solar modules, cells, encapsulants, backsheets and PV components.
Best suited for: Utility-scale, commercial and rooftop solar supply chains.
A company's manufacturing capacity can indicate scale, but it should not be the only factor considered when selecting a solar provider.
Consumers and businesses should examine several factors before purchasing a solar system or signing an EPC contract.
Solar panels are available with different technologies, including TOPCon, HJT, Mono PERC and bifacial designs. Buyers should compare efficiency, degradation rates, temperature performance and warranty terms rather than focusing only on the panel's advertised wattage.
For projects where ALMM compliance or domestic-content requirements apply, buyers should verify the current MNRE-approved status of the specific manufacturer and model. The ALMM list is regularly updated, so relying on an old list can create unnecessary confusion.
Solar installations are designed to operate for decades. Therefore, warranty coverage, service availability, replacement policies, monitoring support and the financial stability of the provider can be important considerations.
A solar installation is not only about the panel. The inverter, mounting structure, cables, protection equipment, battery, monitoring system and installation quality all influence the overall performance of a project.
This is particularly important for rooftop systems, where poor installation can reduce generation even when high-quality panels are used.
The rapid growth of India's solar market creates opportunities but also increases the importance of quality standards.
Manufacturers are increasingly using automated production, electroluminescence testing, reliability testing and data-driven quality control. Such processes can help identify microcracks, defects and manufacturing inconsistencies before modules reach customers.
India's solar industry is gradually moving towards integrated manufacturing of wafers, cells, modules and other components. The expansion of ALMM requirements further upstream demonstrates the policy emphasis on domestic value addition.
Solar generation varies according to sunlight. Battery Energy Storage Systems can therefore play an increasingly important role in balancing electricity supply, particularly for commercial, industrial and utility applications.
Companies such as iNVERGY are already developing inverter and energy-storage solutions that combine solar generation, batteries and grid management.
India's solar sector is entering a phase in which manufacturing scale, technology efficiency, storage and supply-chain integration are becoming increasingly important.
The country had already reached 168.04 GW of installed solar capacity by August 2026, while solar additions during 2025 alone were close to 50 GW, according to MNRE and the IEA respectively.
At the manufacturing level, Mercom India reported that India's cumulative solar module manufacturing capacity had reached about 210 GW by December 2025, while solar cell manufacturing capacity stood at around 27 GW. It also reported that 119 GW of new module capacity and more than 9 GW of cell capacity were added during calendar year 2025.
These numbers show the speed at which India's solar manufacturing ecosystem is developing.
The next challenge will be to ensure that manufacturing growth is accompanied by strong quality control, advanced technology, skilled workers, efficient supply chains, recycling systems and reliable project execution.
India's solar sector in 2026 represents a combination of large-scale manufacturing, rooftop adoption, utility projects, energy storage and technological innovation. Companies such as Tata Power Solar, Adani Solar, Waaree Energies, Vikram Solar, Rayzon Solar, Loom Solar, Saatvik Solar, Goldi Solar and RenewSys represent different parts of this expanding ecosystem, while iNVERGY focuses particularly on solar inverters and energy-storage solutions.
The growth of the industry is supported by strong domestic demand and expanding manufacturing capacity. At the same time, government measures such as ALMM and domestic-content requirements are encouraging companies to build deeper Indian supply chains.
For consumers, the growing number of solar companies provides more choices, but it also makes informed decision-making more important. Instead of considering only price or brand recognition, buyers should examine technology, certifications, warranty terms, installation quality, after-sales service and long-term system performance.
As India continues expanding solar generation and strengthening domestic manufacturing, the sector is likely to become increasingly integrated with battery storage, smart energy management, electric mobility and other clean-energy technologies. The companies discussed in this article provide a useful snapshot of the diverse businesses contributing to that transition in 2026.