With the growth of the rooftop and utility solar market in India, the market is becoming crowded and confusing, and selecting the right partner among the numerous Solar Companies in India can be overwhelming. Some companies produce panels, some companies construct huge utility farming sites and others simply mount a panel on your roof. But, understanding the difference is important because it can determine your pricing, your warranty, and your after-sales experience.
This guide will help you understand the difference between Solar Manufacturers, EPC Contractors and Installers and guide you through the PM Surya Ghar subsidy mechanism, enabling you to make an informed and confident choice for your home or business.
Types of Solar Companies in India (Know Who You’re Actually Hiring)
- Solar panels, cells or modules are made in factories.
- EPC contractors manage Engineering, Procurement, and Construction of big projects.
- Rooftop installers only do residential and small commercial installations.
- Integrated players design and produce panels and also install or implement EPC projects.
- IPPs are Independent Power Producers who will own and run solar plants for the long term.
- RESCO providers will install systems for “zero upfront cost,” and will sell you power.
- Some companies only work with components such as EVA sheets or backsheets and not panels.
Why India’s Solar Market Matters in 2026
- India is expected to see the addition of more than 30 GW of new solar installations in 2026 alone.
- Rooftop demand is exploding with the government schemes such as PM Surya Ghar.
- Domestic manufacturing is rapidly growing and decreasing the reliance on imports.
- These ALMM rules are driving up quality control and the procurement of local materials.
- Many new solar projects are now packaged with battery storage (BESS).
- As technology costs continue to drop, most homes are being reached by the cheaper price of solar power than that of the electric grid.
How We Ranked These Solar Companies in India
- The base scale for credibility is given by manufacturing/execution scale (GW capacity).
- Qualifications like BloombergNEF Tier 1, certifications from the ALMM listing and ISO standards.
- History of successful projects, both residential and utility scale.
- Specialization and technology focus, from TOPCon cells to bifacial modules.
- Known for post sale services and warranties.
- A strong financial position and a long history of operations in the industry.
Comparison Table Structure: Manufacturer vs EPC vs Rooftop Installer
| Company Type | What They Do | Best For |
| Manufacturer | Produces solar panels, cells, and modules | Bulk buyers, EPCs, and distributors |
| EPC Contractor | Designs, procures, and constructs solar projects | Utility-scale and large commercial plants |
| Rooftop Installer | Installs and maintains home/small business systems | Homeowners and small businesses |
| Integrated Player | Combines manufacturing with installation or EPC | Buyers wanting one point of accountability |
Top 15 Solar Companies in India (2026)
1. Tata Power Solar Systems Ltd
| Metric | Operational Detail |
| Founded In | 1989 |
| Type | EPC, Manufacturer & Installer |
| Headquarters | Mumbai, Maharashtra |
| Capacity / Scale | 17.7 GW total renewable portfolio; 4.3 GW cell/module capacity; 10 GW cumulative EPC execution |
| Certifications | ISO 9001/14001, ALMM approved, MNRE listed |
| Best For | Residential rooftop & high-scale corporate EPC |
| Website Link | https://www.tatapowersolar.com/ |
Tata Power Solar is one of the most popular names among Solar Companies located in India for household and corporate use. With the proven Tata Group legacy, it has managed to achieve Rooftop installation of 1 GWp in record time and is executing landmark Utility projects including an 800MW plant in Andhra Pradesh. Using its own cells and modules, it’s growing in prominence due to vertical integration, which ensures quality uniformity for both small rooftop projects and mega installations. The brand’s forte is its retail presence and the reliability of its after-sales service – a strong point that instills confidence in the customers that they will get support years after the installation, which is uncommon in the rapidly expanding but still maturing industry.
2. Waaree Energies Ltd
| Metric | Operational Detail |
| Founded In | 1990 |
| Type | Manufacturer & Utility EPC |
| Headquarters | Mumbai, Maharashtra |
| Capacity / Scale | 25.75 GW aggregate global module capacity; 5.4 GW solar cell capacity |
| Certifications | BloombergNEF Tier 1, ALMM, TUV SUD, CE |
| Best For | Large-scale volume supply & high-efficiency modules |
| Website Link | https://www.waaree.com/ |
Waaree Energies has emerged as India’s biggest non-Chinese solar panel maker, with exports to 25 countries. Its capital expansion program of around ₹30,000 crore for automated cell and wafer facilities is meant to make its presence felt in global supply chains for years to come. Its specialties involve large volume manufacturing and cutting edge technical execution – such as large utility deployments and its expanding battery storage container line. Waaree is one of the most bankable Solar firms in India today where buyers are looking for bulk, reliable modules with high export credibility.
3. Adani Solar / Adani Green Energy Ltd
| Metric | Operational Detail |
| Founded In | 2015 |
| Type | Integrated Manufacturer & Mega-Scale Developer |
| Headquarters | Ahmedabad, Gujarat |
| Capacity / Scale | 20 GW+ operational renewable capacity; 4 GW cell/module line |
| Certifications | ALMM, ISO 9001/14001/45001, Top 6 Wood Mackenzie Global Rank |
| Best For | Massive ultra-utility solar farms & greenfield infrastructure |
| Website Link | https://www.adanigreenenergy.com/ |
Adani Green Energy is the world’s benchmark company for greenfield solar development as it has completed more than 20 GW of operational capacity and installed more than 5 GW in just one year. Its anchor project, the world’s largest single location renewable park at Khavda, Gujarat, is a testament to the scale at which this company works. The unique selling point here is the total value chain from ingot to modules with a combined solution of gigantic battery storage facilities, providing low-risk, long-term clean energy solution to international investors and large industrial buyers, amongst others in India, which are comparable with the Solar Companies in India scale-wise.
4. Vikram Solar Limited
| Metric | Operational Detail |
| Founded In | 2006 |
| Type | Manufacturer & EPC |
| Headquarters | Kolkata, West Bengal |
| Capacity / Scale | 4.5 GW solar PV module manufacturing capacity |
| Certifications | BloombergNEF Tier 1, EcoVadis Platinum Medal, PVEL Top Performer |
| Best For | Premium high-reliability exports & institutional EPC |
| Website Link | https://www.vikramsolar.com/ |
Vikram Solar’s reputation rests on the back of high-end Tier-1 grade modules that it has exported to 39 countries. It is also a Platinum rated company according to EcoVadis, a certificate that represents the top one-percent of companies in the world that have been audited for sustainability. The company specializes in high efficiency Mono PERC and smart monitored panels to support India’s ambitious target of 500 GW Renewable energy. It has been proven to be reliable over time through independent PVEL scorecards and is a popular option among institutional buyers who place greater emphasis on durability than lowest initial cost.
5. ReNew Energy Global PLC
| Metric | Operational Detail |
| Founded In | 2011 |
| Type | Independent Power Producer (IPP) & Utility EPC |
| Headquarters | Gurugram, Haryana |
| Capacity / Scale | 10 GW+ operational utility asset portfolio |
| Certifications | ISO 9001, Carbon Clean 200, Global Compact signatory |
| Best For | Grid-scale wind-solar hybrid infrastructure & corporate PPAs |
| Website Link | https://renew.com/ |
ReNew Energy is a full-fledged clean infrastructure developer directly engaging government agencies and large corporate consumers. Its growth model is based on long-term PPAs and digitized monitoring systems which enable real-time tracking of plant performance. ReNew’s unique value is its ability to combine the solar assets with wind assets and next generation transmission network, resulting in a more predictable power output than a solar project alone. The hybrid model helps minimise grid intermittency risk, therefore ReNew can be a reliable partner for industrial customers who have a need for clean energy supply in a predictable manner on a 24/7 basis.
6. Premier Energies Limited
| Metric | Operational Detail |
| Founded In | 1995 |
| Type | Integrated Cell & Module Manufacturer |
| Headquarters | Hyderabad, Telangana |
| Capacity / Scale | ~4 GW high-tech integrated production capacity |
| Certifications | ALMM, TUV, ISO 9001:2015, CE |
| Best For | Advanced TOPCon & Mono PERC solar cell architecture |
| Website Link | https://www.premierenergies.com/ |
Premier Energies has become a leader in advanced cell technology among Solar Companies in India, and has emerged as a new breed of manufacturer, going beyond the legacy model. The company’s focus has moved significantly towards N-Type TOPCon cells, which produce better output even in extreme weather conditions, a vital element in India’s climate. Its specialty is supplying cell lines to domestic solar companies that must meet Domestic Content Requirement rules. However, this emphasis on local cell production, combined with the strengthening of import restrictions throughout the country, creates a solid structural growth and makes Premier Energies a strategic backbone supplier, not just another cell maker.
7. Sterling and Wilson Renewable Energy Ltd
| Metric | Operational Detail |
| Founded In | 2011 |
| Type | Pure-Play Utility EPC Contractor |
| Headquarters | Mumbai, Maharashtra |
| Capacity / Scale | 15 GW+ globally executed engineering portfolio |
| Certifications | ISO 9001/14001/45001, British Safety Council Star Winner |
| Best For | Mega turnkey open-access infrastructure projects |
| Website Link | https://www.sterlingandwilsonre.com/ |
Sterling and Wilson only do the engineering aspect and are building huge amounts of ground-mounted arrays in a couple of continents. It specializes in building complex structural racking and solar tracking systems that optimise the output on challenging sites. A legacy of decades of engineering experience is the firm’s ability to consistently deliver large grid-interconnected projects within tight time frames, particularly important to utility clients with regulatory deadlines. Challenging geographies, combined with solid substation design, ensures growth here, and the project makes it a preferred EPC partner for large-scale projects with challenging geographies.
8. Goldi Solar Pvt Ltd
| Metric | Operational Detail |
| Founded In | 2011 |
| Type | Panel Manufacturer & EPC |
| Headquarters | Surat, Gujarat |
| Capacity / Scale | ~4 GW module manufacturing capacity |
| Certifications | ALMM approved, BloombergNEF Tier 1, BIS certified |
| Best For | High-density bifacial modules & micro-rooftop setups |
| Website Link | https://goldisolar.com/ |
Goldi Solar has highly automated robotic production lines with high emphasis on Precision manufacturing in Gujarat. It specializes in bifacial modules (BIM), which generate additional electricity reflecting sunlight from the ground, which can increase generation by up to 25 percent for installations in fields and agricultural applications. The company has gained a solid ground in the tier 2 markets and small towns in the western part of India with its localized micro distribution model. This grassroots approach is paired with commercial grade product quality, making Goldi Solar a strong growth story when it comes to mid-sized manufacturers.
9. Jakson Group
| Metric | Operational Detail |
| Founded In | 1947 (Solar Division: 2016) |
| Type | Diversified Infrastructure & Solar EPC |
| Headquarters | Noida, Uttar Pradesh |
| Capacity / Scale | 1.2 GW module line; multi-MW distributed energy portfolio |
| Certifications | ALMM listed, ISO 9001, OHSAS 18001 |
| Best For | Integrated energy storage (BESS) & diesel-hybrid microgrids |
| Website Link | https://www.jakson.com/ |
Unlike most Solar Companies in India, Jakson Group has maintained its discipline in the power infrastructure legacy age and has introduced this discipline into the renewable age as well. It emphasizes decentralized clean energy, such as microgrids off the grid and industrial back-up that allows critical operations to continue uninterrupted. It’s specialist is the engineering of a Battery Energy Storage System directly coupled with a solar inverter, ideal for defence applications, rural townships and industrial estates. The reliability is the key here, and that has earned Jakson the trust of its users wherever power backup is a must.
10. Saatvik Green Energy Pvt Ltd
| Metric | Operational Detail |
| Founded In | 2015 |
| Type | Module Manufacturer |
| Headquarters | Ambala, Haryana |
| Capacity / Scale | ~3 GW premium production capacity |
| Certifications | ALMM, BIS certified, ISO 14001 |
| Best For | High-efficiency residential modules across Northern India |
| Website Link | https://saatvikgroup.com/ |
Saatvik Green Energy has quickly gained market share in the northern parts of India with quality control and regular upgrading of technologies. It’s equipped with high output Mono PERC Half-Cut and TOPCon modules that are designed to resist the extreme temperatures found in regions. The company’s growth advantage is the fact that it has a localized supply chain, which reduces transportation time and freight costs for customers within the region. The regional focus makes Saatvik a viable choice for commercial systems and solar parks backed by the government who seek rapid and consistent delivery.
11. RenewSys India Pvt Ltd
| Metric | Operational Detail |
| Founded In | 2011 |
| Type | Integrated Component Manufacturer |
| Headquarters | Mumbai, Maharashtra |
| Capacity / Scale | 2.5 GW module assembly capacity; huge encapsulant footprint |
| Certifications | UL certified, Intertek certified, IEC compliant |
| Best For | Raw solar components (EVA sheets, backsheets) |
| Website Link | https://www.renewsysworld.com/ |
RenewSys India stands out as the first integrated manufacturer of core solar components in India, a position held by no other Solar Companies in India. It also manufactures important internal components like EVA sheets, POE encapsulant sheets and protective backsheets to assemble finished panels. This in-depth focus on a particular material type protects RenewSys against international supply chain disruptions caused by raw material shortages. Its sub-systems supply many other local assembly companies, making it an indirect, but significant, contributor to the nation’s manufacturing growth.
12. Insolation Energy Limited (INA)
| Metric | Operational Detail |
| Founded In | 2015 |
| Type | Module Manufacturer & Rooftop Developer |
| Headquarters | Jaipur, Rajasthan |
| Capacity / Scale | ~1.2 GW automated production scale |
| Certifications | ALMM, ISO 9001:2015, CE |
| Best For | Western market retail supply & commercial rooftops |
| Website Link | https://insolationenergy.in/ |
Insolation Energy has been one amongst the quickest growing Publicly Listed Solar Company in India and is a clean energy solution player specializing in the clean energy demand in the Western part of India. It is a fully automated production line that makes high-efficiency TOPCon and glass-to-glass bifacial panels with durability. The company’s greatest advantage is its flexible retail distribution system, which allows it to meet the high demand from residential customers quickly, through government subsidy schemes. Insolation Energy has established a reputation for rapidly and conveniently installing solar panels on rooftops for homeowners and small businesses, supported by responsive local teams.
13. Fourth Partner Energy Pvt Ltd
| Metric | Operational Detail |
| Founded In | 2010 |
| Type | C&I Developer & OPEX EPC |
| Headquarters | Hyderabad, Telangana |
| Capacity / Scale | 1.5 GW+ commercial and industrial execution |
| Certifications | ISO 9001, OHSAS 18001, CRISIL graded |
| Best For | Zero-investment solar (RESCO / OPEX models) |
| Website Link | https://www.fourthpartner.co/ |
The RESCO model is the basis of the business of Fourth Partner Energy, who install solar systems at commercial and industrial properties without any upfront cost to the client. Rather, it sells the electricity it produces back to the business at a discounted long-term rate, thereby eliminating all the investment costs. The arrangement has been particularly popular among companies seeking to make instant savings on their operations costs without cash flow disruption. It has been bolstered by its good ratings by CRISIL and its history of reliable long-term energy contracts.
14. Rayzon Solar
| Metric | Operational Detail |
| Founded In | 2016 |
| Type | Module Manufacturer |
| Headquarters | Ahmedabad, Gujarat |
| Capacity / Scale | ~4 GW automated manufacturing base |
| Certifications | ALMM approved, ISO 9001, CE, TUV |
| Best For | Mass-market utility module contracts |
| Website Link | https://www.rayzonsolar.com/ |
Rayzon Solar’s growth has been truly phenomenal as they have expanded manufacturing aggressively in Gujarat and are now among the top Solar Companies in India. It specializes in mass production of high-wattage modules, including Mono PERC and TOPCon models, designed for large scale, heavy duty applications. The company’s main selling point to its customers is its competitive procurement pricing and the quality of its products that are not held up by long lead times that often occur in large infrastructure contracts. The mix has created a situation where Rayzon is the preferred supplier to public infrastructure developers who require regular, high volume deliveries.
15. Loom Solar Pvt Ltd
| Metric | Operational Detail |
| Founded In | 2018 |
| Type | Manufacturer & Residential Installer |
| Headquarters | Faridabad, Haryana |
| Capacity / Scale | Multi-MW residential tech deployment; massive e-commerce network |
| Certifications | ISO 9001:2015, StartUp India recognized, CE |
| Best For | Residential Mono-PERC panels & domestic hybrid systems |
| Website Link | https://www.loomsolar.com/ |
Loom Solar has revolutionized the way solar products are being sold to the common man in India by creating the largest e-commerce platform in the country for renewable energy products. It specializes in delivering compact, high-efficiency Mono Crystalline and Shark-series panels designed to deliver performance even in limited rooftop space and under overcast skies. This strong retail network with its doorstep delivery, guided home delivery and flexible EMI financing is the biggest growth driver for the company. This customer-centric strategy has positioned Loom Solar as one of the most approachable solar energy options for new homeowners across the country.
Manufacturer vs EPC vs Rooftop Installer: Which Should You Choose?
| Factor | Manufacturer | EPC Contractor | Rooftop Installer |
| Ideal Buyer | Bulk buyers, dealers, other EPCs | Utility & large commercial projects | Individual homes & small offices |
| Project Size | N/A (supplies components) | Multi-MW to GW scale | 1 kW to 50 kW typically |
| Warranty Ownership | Product warranty on panels | Performance & construction warranty | End-to-end system warranty |
| Speed of Execution | Fast bulk supply | Longer, phased execution | Usually 1-2 weeks |
| Best When | You need panels only, at scale | You need a full utility-scale build | You want a hassle-free home system |
PM Surya Ghar Yojana & Solar Subsidies in India (2026 Update)
Eligibility
- Indian Resident: Applicant should be an Indian resident who wants to install a residential rooftop solar system under the Government scheme.
- Valid Electricity Connection: Residential Electricity Connection must be registered in the name of the applicant or eligible family member and be in active use.
- Suitable Rooftop: A suitable rooftop would be a strong and shadow-free roof with enough space for effective installation of rooftop solar panels.
- Sanctioned Load: Residential electricity connection generally needs to have a sanctioned load of 10 kW or less to be eligible.
- No Central Govt Solar Subsidy: The applicant should not have availed the rooftop solar subsidy from the central government for the same residential property.
- ALMM Equipment: The solar panels and components can only be ALMM approved to avail this subsidy benefit under PM Surya Ghar Yojana.
PM Surya Ghar Yojana Subsidy Amount
- Central subsidy: For the 1 kW rooftop solar system, the residential consumers get the subsidy of ₹30,000.
- 2 kW System: Under the PM Surya Ghar scheme, the government provides a subsidy of ₹60,000 for a 2 kW rooftop solar system.
- 3 kW System: The highest central subsidy of ₹78,000 is provided for residential rooftop solar installations for 3 kW systems.
- If ratings are above 3 kW: If the system is greater than 3 kW, the central subsidy remains the same at ₹78,000.
- Benchmark Cost: Benchmark Costs are used for subsidy calculation, which are not the actual installation cost charged by the vendor.
- Direct Transfer: The approved subsidy will be credited directly to the bank account of the applicant, which is registered with the bank, under Direct Benefit Transfer mode.
How to Apply
- Register Online: Make an account on the official PM Surya Ghar portal with the help of state, DISCOM, and electricity number.
- Submit Application: Fill the application form on the web with correct personal information and data on electricity connection and Bank Account in order to verify it.
- Rooftop Feasibility Approval: Only install once local DISCOM have conducted the rooftop feasibility approval of the application.
- Solar System: Get official approval from DISCOM and install a rooftop Solar System from a registered vendor that is ALMM approved.
- DISCOM Inspection & Net Metering: DISCOM conducts system inspection, installation and commissioning of Net Meter before processing subsidy payment.
- Receive Subsidy: Government transfers the approved subsidy directly to your registered bank account via DBT.
Solar System Cost in India (2026): What Drives the Price per kW
| Cost Factor | Why It Matters |
| Panel Technology | Mono PERC, TOPCon, and bifacial panels are priced differently by efficiency |
| System Size | Larger systems usually lower the effective cost per kW |
| Inverter Quality | String, hybrid, and microinverters vary widely in price and reliability |
| Mounting Structure | Rooftop type (RCC, tin shed, ground mount) changes structural costs |
| Brand & Warranty | Established manufacturers with longer warranties command a premium |
| Installation Labor | EPC and installer margins vary by region and project complexity |
| Subsidy Eligibility | ALMM-listed components qualify for government subsidy, non-listed ones don’t |
| State-Level Incentives | Some states add their own top-up subsidies over the central scheme |
How to Choose the Right One Among Solar Companies in India for Your Home or Business
- Check if you require a manufacturer, an EPC contractor or a rooftop installer.
- Verify ALMM listing and BIS or ISO certificate prior to any contract.
- Request references or pictures of projects completed in the area you are interested in.
- Don’t just look at price, compare the warranty offered on panels, inverters and workmanship.
- Check on the support they have applied to the company for the subsidies and their history of approvals from the DISCOM.
- Ask for a detailed estimate of the cost per kW and not just a flat rate.
- Consider responsiveness and being present locally rather than just the lowest price.
Conclusion
When it comes to picking the best Solar Companies in India, it is all about finding the right fit for your needs. A homeowner would most benefit from a trusted rooftop installer who has good local service, whereas a large enterprise would benefit from a proven EPC contractor that has the ability to carry out multi-megawatt installations. The supply chain everyone else relies on is led by manufacturers such as Waaree, Adani and Vikram Solar.
Even with the PM Surya Ghar subsidy still in place and technology costs dropping, 2026 is a great year to make the transition to solar, as long as you have a company that has the scale, certifications, and specialty you’re looking for.
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FAQs
What are the best solar companies in India for home?
Tata Power Solar, Loom Solar, and Insolation Energy are great options for home solar installations, with their established retail networks, subsidies, and reliable after-sales support.
What is the amount of subsidy provided under PM Surya Ghar Yojana in 2026?
<cite index=”2-1″>The scheme offers ₹30,000 for a 1 kW system, ₹60,000 for a 2 kW system, and a maximum of ₹78,000 for systems of 3 kW or higher.</cite>
What will be the average price of solar panels per watt (p/w) in India in 2026?
The cost of each panel depends on the panel technology and type as well as the brand, but the most popular panels are still Mono PERC and TOPCon, and the per-kW cost of the system also includes the installer and EPC margins.
What’s the difference between a solar manufacturer and an EPC company?
The manufacture of physical panels and cells, and design, procurement of materials for, and construction of the entire solar project, is done by an EPC company, frequently from a manufacturer.
What is the lifespan of solar panels in India?
Most of the quality panels from certified Solar Companies in India come with 25 year warranty and can be effective in providing a meaningful output even after 25 years with proper maintenance.
