Imagine you are standing in a field in Rajasthan or on a rooftop in Bangalore, and the sunlight is transformed into electricity. It is almost like magic, you know? However, the magic is made possible with due care in engineering, planning, and massive heavy equipment. This is Solar EPC (Engineering, Procurement, and Construction).
India is also not searching in 2026. We are racing to it. It has turned into one of the solar power giants in the country. India has already put in place 132.GW of solar power by the year 2025. It aims to achieve 500 GW of non-fossil fuel generation by 2030, which will create a massive increase in the business.
You do not need a few panels, but much more in case you are an owner of a business, a manager of a factory, or an investor interested in using the sun. You should have someone who would construct the entire system. The latter is a Solar EPC company.
Nevertheless, there are a lot of companies. Who can you trust? This vacuole is your guide to 2026. We have eliminated the jargon to present to you the most competent, trustworthy, and forward-looking Solar EPC companies in India today.
Solar EPC Industry in India: The Big Picture.
The solar industry in India is in the Gold Phase.
Solar was costly some years back. Nowadays, under government schemes such as the PLI scheme, the PM-KUSUM yojana, solar energy is even less expensive than coal power.
Today (2026) it is no longer about the installation of panels but the development of intelligent energy systems. To ensure that power plants remain operational over a 25-year period, battery storage (BESS) and robot cleaning systems have now become part of EPC companies. The level of competition in the market is high, and this means that you get better technology and lower prices.
Also Read: Best Renewable Energy Business Ideas
What Is a Solar EPC Company?
Let’s simplify this.
Imagine the construction of your house of dreams. You would purchase the bricks, cement, and wood yourself, after which you would have to contract a plumber, electrician, and mason on an individual basis. Right, it would be hectic and stressful.
You engage a Contractor instead. You provide them the land, the budget and they provide you with a completed house and keys.
An EPC company that specialises in Solar works is like that Contractor.
- E (Engineering): These are the ones who design the solar plant. They determine your roof area, the location of the shadows, and the quantity of wires required.
- P (Procurement): They purchase the highest quality panels, inverters and cables of reliable suppliers.
- C (Construction): They put a team to set all that, link it with the grid and turn it on.
The headaches are their prerogative: the permits, government approvals, and safety checks, which you can leave to yourself.
How This List Is Curated
We did not select names randomly. Three good pillars will be developed on the basis of this list in 2026:
- Track record: Have they really done what they said? We examined their capacity commissioned by the firms- the projects which they completed successfully.
- Financial Stability: Solar projects have 25 years durability. You want a company that would be there in 2040 to take the warranty.
- Innovation: Do they use an obsolete technology, or
Table of Solar EPC Companies in India.
The following is a glimpse of it in case you are in a hurry.
| Company Name | Founded | Core Strength | Typical Project Size | Best Suited For |
|---|---|---|---|---|
| Tata Power Solar | 1989 | End-to-end EPC + Manufacturing | Rooftop to Utility Scale | Homes, SMEs, Large Enterprises |
| Sterling & Wilson Renewable | 2017 | Large Utility-scale EPC | 100 MW – 1000 MW | Government & Mega Solar Parks |
| Adani Solar | 2015 | Vertically Integrated Mega Projects | 500 MW+ | State & National Infrastructure |
| L&T Solar | 1938 | Complex Engineering Projects | Utility & Hybrid Projects | High-engineering Projects |
| Vikram Solar | 2006 | High-efficiency Modules + EPC | 1 MW – 50 MW | Factories & C&I Sector |
| Waaree Renewable | 1989 | Cost-effective EPC | Rooftop to Mid-scale | SMEs & Institutions |
| Mahindra Susten | 2010 | Tech-driven EPC & IPP | Utility & Hybrid | Corporate PPAs |
| Jakson Group | 1947 | Hybrid & Storage Solutions | Industrial Solar | 24/7 Power Users |
| KPI Green Energy | 2008 | Captive Solar Parks | Off-site Solar Plants | Land-constrained Industries |
| Rays Power Infra | 2011 | Fast Execution & Open Access | Open Access Solar | Investors & High-ROI Seekers |
Top 10 Solar EPC Companies in India (2026)
Here is the deep dive. These are solar players of the Indian industry.
1. Tata Power Solar Systems Ltd.
- Founded in: 1989
- Address: Tata Power Corporate Centre, Carnac Bunder, Mumbai, Maharashtra -400009.
- Phone No: 1800‑419‑8777 (Toll-Free)
Tata Power Solar is a brand that is familiar in India due to its credibility and history and is widely regarded as one of the best solar EPC companies in India. The company does it all: the solar cells and panels are made by them, and they are installed as well. That is to say that it is able to maintain quality under control. It has been a business of over 30 years prior to the popularity of solar. It operates on minuscule rooftop projects in rural areas and very massive solar parks in major businesses such as NTPC.
Solar EPC Services:
- large utility scale projects
- Rooftop Solar (Residential and Commercial)
- Solar Water Pumps.
Installed Capacity / Scale
- Over 18 GW utility-scale EPC projects
- Over 3 GW rooftops.
Why it stands out:
It is the leader on the rooftop solar market. This company is worth a good ride with a valid brand.
Best for:
The Smartphone should be best suited to homeowners and business people who require quality and tranquility.
2. Sterling and Wilson Renewable Energy Ltd.
- Founded in: 2017 (The predecessors of the demerged entities date back to 1927)
- Address: 9th floor, Universal majestic, P. L. Lokhande Marg, Chembur, (W) Mumbai -400043.
- Phone No: +91 22 2548 5300
Sterling and Wilson is a global player and is considered one of the best solar EPC companies in India, operating in India, the Middle East, Australia, and the US. This experience in the world introduces high standards of engineering in its Indian projects. It specializes in EPC projects of big dimensions. It cannot fit small jobs, and in case you want to create a 500 MW solar park, it is one of the best. It has numerous large contracts with firms such as NTPC.
Installed Capacity / Scale
- Global portfolio of more than 19 GW
- a robust 3-4 GW pipeline in India in the recent past.
Why it stands out:
It can accomplish very large projects, and they are usually accomplished before the deadline.
Best for:
Developers of large-scale utilities and government projects that are concerned about speed and scale.
3. Adani solar (Adani infrastructure)
- Founded in: 2015
- Phone No: +91 79 2555 5555
- Website: www.adanisolar.com
The company is a part of the giant Adani Group and deals with solar on such a massive scale. It constructs all: it mines the materials used, and it manufactures the panels in its own factory, and it produces power. This vertical integration assists its EPC work. It has violent schedules and finances to construct the biggest solar farms on the planet, such as those in Khavda, Gujarat. It is concentrated on big infrastructure, rather than on small rooftop work.
Solar EPC Services:
- Mega Solar Parks
- Grid-Connected Projects.
Installed Capacity / Scale
- The group wants to be 45 GW of renewables by 2030
- EPC arm has GW-scale projects per year.
Why it stands out:
Scale. It is capable of dealing with projects even in problematic areas that are not being handled by other firms.
Best for:
Mega-projects and state-level development of infrastructure.
4. L&T Solar (Larsen & Toubro)
- Founded in: 1938
- Address: L&T house, Ballard estate, Mumbai -400001.
- Phone No: +91 22 6752 5656
- Website: www.lntecc.com
L&T constructs the bridges, metros and airports in India and is widely regarded as one of the best solar EPC companies in India. It emphasises an engineering approach to solar. Complex projects, such as floating solar on reservoirs or in hard-soil areas, where other EPCs would perform poorly, are typically handled by L&T Solar. It does not skimp on corners; its plants are built to last and, in most cases, produce more power due to better design and components.
- UTILITY Solar
- Floating Solar
- Microgrids
- Energy Storage
Installed Capacity / Scale
- EPC track record in excess of 22 GWp around the globe and in India.
Why it stands out:
Technical superiority. In case the project has complicated engineering issues, the L&T is the specialist.
Best for:
More complicated utility work and large industrial customers where engineering quality is important to them but not necessarily the lowest price.
5. Vikram Solar
- Founded in: 2006
- Address: The Chambers, 8th Floor, 1865, Rajdanga Main Road, Kolkata – 700107
- Phone No: +91 33 2441 7200
- Website: www.vikramsolar.com
Vikram Solar was started off as a manufacturing company. In order to sell good panels, they also saw that they had to construct the plants that utilise them. Their headquarters is located in Kolkata and they are powerful in Eastern India yet work in the entire country. They target the mid-market, e.g. large factories, commercial buildings and medium-sized solar parks. They are noted to have high-efficiency modules. When you contract them to do EPC, you will have their best technology at your place of work without an intermediary.
Solar EPC Services:
- Floating Sola
- Ground-Mounted Solar
- Rooftop Solar.
Installed Capacity / Scale:
- Single-handedly commissioned more than 3 GW of projects; has 300+ clients.
Why it is unique:
Best customer service. Compared to the giant conglomerates, Vikram Solar can be closer and more approachable with its clients.
Best for:
Factory owners (C&I) and investors are interested in having a trustworthy partner to implement projects of 1 MW to 50 MW.
6. Waaree Renewable Technologies Ltd.
- Founded in: 1989 (Solar EPC arm has become prominent in the recent past)
- Address: 602, Western Edge-I, Western Express Highway, Borivali (E), Mumbai -400066.
- Phone No: +91 22 6644 4444
- Website: www.waaree.com
Waaree Renewable Technologies was established in 1989 and is among the leading solar EPC companies in India. Its Solar EPC division has gained popularity in the recent past. The company is the largest solar panel manufacturer in India, and its EPC service is expanding at a rapid rate. Waaree offers cheap charges and fast delivery. Its low EPC rates are due to its in-house panel manufacturing. Their numerous franchise outlets indicate they can be found even in small tier-2 and tier-3 cities.
Solar EPC Services:
- Rooftop
- Floating Solar Ground Mounted
- O&M ( Operations and maintenance ).
Installed Capacity / Scale:
EPC portfolio reached 2 GW; Order book is extremely robust in 2026.
Why it stands out:
Value for Money as to why it is outstanding. Having in-house manufacturing as well as EPC services will enable them to provide cost-effective solutions.
Best for:
SMEs (Small and Medium Enterprises) and institutional buyers who are in a hurry.
7. Mahindra Susten
- Founded in: 2010
- Phone: + 91 22 61725400.
- Phone No: +91 22 2493 1441
- Website: www.mahindrasusten.com
Mahindra Susten was established in 2010. It belongs to the Mahindra Group and specialises in clean and high-quality energy. It is an EPC company and an Independent Power Producer; hence, it also constructs plants on its own. This is an added advantage–its own gardens are constructed with as much care as your garden. It is highly engaged in the Corporate PPA market, making big companies greener.
Solar EPC Services:
- Using a utility scale
- Hybrid (solar+wind)
- Asset management
- Hybrid (solar+wind) platforms
Installed Capacity / Scale:
Built more than 4 GWp of renewable / projects.
Why it stands out:
Innovation. They were among the pioneers who employed robots to clean their solar panels to conserve water. They are concerned with hi-tech maintenance.
Best for:
Corporations that have a strong desire to achieve sustainability and want a high-tech solar environment.
8. Jakson Group
- Founded in: 1947
- Address: A-43, Phase-II extension, Hosiery complex, Noida -201305, Uttar Pradesh.
- Phone No: +91 120 430 2600
- Website: www.jakson.com
Jakson Group was established in 1947 and is recognised as one of the best solar EPC companies in India. It was initially reputed as a diesel generator company and currently, it is a big solar company. It is a company that focuses on energy storage and hybrid. Since it is aware of generators and reserve power, it is an expert at integrating solar into the existing power systems. When power cuts occur at one of the factories and the factory needs a solar system to operate with its diesel generator, Jakson is the expert.
Solar EPC Services:
- Rooftop
- Land-based, Solar + Storage
- Green Hydrogen.
Installed Capacity / Scale:
More than 3 GW of EPC portfolio consisted of executed and under-executed projects.
Why it stands out:
Hybrid Capability. They are the most successful in bridging the gap between the traditional power (generators) and the new power (solar).
Best for:
Any industrial unit that is in need of 24/7 power and reliability.
9. KPI Green Energy
- Founded in: 2008
- Location: KP House, Adajan, Surat, Near Anand Mahal road, gujarat -395009.
- Phone No: +91 261 224 4757
- Website: www.kpigreenenergy.com
KPI Green Energy was founded in 2008. It was initiated as a regional firm but it turned out to be national. It operates a model called the Captive Power Producer and is based at Gujarat. It develops solar parks and markets the energy or the plant to the industries in Gujarat and other localities. In 2026 the company grew a lot. It provides a plug-and-play design: you do not have to buy land, you just purchase some portion of its solar park.
Solar EPC Services:
- IPP
- Captive power Projects
- Merchant Power Sale.
Installed Capacity / Scale:
- Crossing 2 GW cumulative capacity target.
Why it stands out:
They simplify the process of acquiring a solar plant by the companies that do not have land to its solar parks owned by KPI.
Best for:
Companies located in Gujarat/Maharashtra with no roof/land space but interested in solar power.
10. Rays Power Infra
- Founded in: 2011
- Address: Plot No. 129, Sector 44, Gurugram, Haryana – 122003
- Phone No: +91 124 400 3996
- Website: www.rayspowerinfra.com
Rays Power Infra is an efficient fast company. It is among the largest open access solar suppliers. It acquires land, permits, develops solar facilities and subsequently sells the plant to investors or corporations. The company is associated with low costs and no red tape. Whereas big firms are very slow, Rays Power Infra decide and complete projects within a short time.
Solar EPC Services:
- Open Access Solar Parks
- Turnkey EPC
Installed Capacity / Scale:
- Over 1.5 GW installed in India and in Vietnam.
Why it stands out:
They have very flexible business models for investors and industries that aim at saving on electricity bills.
Best for:
Investors and Open Access consumers who seek high ROI.
What is the market share of the Solar EPC companies in India?
The Indian solar market is said to be a pyramid.
- The Top Tier (30-40% Share): A big portion of the utility-scale market is dominated by the leading 5 players ( Tata Power, Sterling and Wilson, Adani, and L&T). These are the only ones with the capacity to bid when the government is tendering a 1000MW park.
- The Mid-Market (30 per cent Share): Vikram Solar, Waaree and Jakson companies take the Commercial and Industrial (C&I) dominant arena. This industry is expanding at the quickest rate in 2026 with factories competing to save money.
- Long Tail (30% Share): Thousands of minor local EPC companies deal with residential rooftops in particular cities.
- Major Prognosis in 2026: There is an increase in the market share of the organised players such as Tata and Waaree, as customers have come to understand that local and unverified installers cannot offer service over a 25-year period. The currency that is becoming the most valuable is trust.
Conclusion
The most financially sound move that you will make in 2026 is probably going to be solar. It is not only you, the homeowner, who would like to zero out your power bill, but also the CEO who would like to make your factory green. The technology is available and the economics is on your side.
The above-mentioned companies are the driving force behind the green revolution in India. They possess the experience, the capital and the technology to make sure that the transition to solar is easy.
Would you like me to assist you in preparing a Request for Quotation (RFQ) e-mail which you can forward to these companies so that they can provide the most affordable quote to your project?
FAQs
1. What is the cost of a Solar EPC company in India?
A massive industrial undertaking in 2026 would cost 3.5-4 crores per MW. One of the roofs of the residential home is estimated to cost between 50,000 and 60,000 per kW.
2. What is the distinction between a Solar Developer and an EPC?
The money is spent by a developer who owns the plant, and he or she sells the power. The developer gets the plant constructed by an EPC. Others such as Adani and Tata do both.
3. What is the duration of construction of a solar plant?
A home rooftop takes 2‑3 days. A factory roof takes 3‑4 weeks. A huge utility-scale farm (100 MW and above) will require 12 to 18 months to complete.
4. What is the advantage of selecting a Tier one EPC organisation?
A local supplier may go out of business within 5 years and you will be left without a supplier. Tier 1 companies (such as Tata or L&T) have good warranties and life time service of the entire plant.
