India's Top 10 Solar Developers 2026: The Crisil Rooftop Ranking

Last updated: 29 October 2026 · By the SustVest Research Team

Quick answer: According to the Crisil Bridge to India India Solar Rooftop Map, June 2026, the top rooftop solar project developers in India are Roofsol, BECIS, Enerparc, Fourth Partner Energy, SustVest, candi solar, Evolve Energy and Kalpa Power. The top rooftop solar EPC contractor is Tata Power, followed by SolarSquare, Sunkind India and Roofsol. Rankings are based on capacity installed in the 12 months ended June 2026.

Most "top solar companies in India" lists mix up panel makers, utility-scale giants and rooftop installers, and few say how they ranked anyone. This guide is different. It is built on independent data: the Crisil Bridge to India ranking of who actually installed the most rooftop solar in India over the last year.

Disclosure: SustVest is ranked #5 in the project developer list covered below. We have kept every company profile factual, dated and sourced, so you can check it yourself.

Key takeaways

• India had 35,739 MW of rooftop solar installed as of 30 June 2026, after adding 13,261 MW in the 12 months to June 2026.
• Roofsol is India's #1 rooftop solar project developer for the second year running, with 22% of OPEX additions.
• Tata Power is India's #1 rooftop solar EPC contractor, with 13% of all rooftop capacity installed in the year.
• Roofsol and Enerparc are the only companies on both lists, ranking among the top project developers and the top EPC contractors.
• The market is very fragmented. The top 10 EPC contractors together installed less than a fifth of new rooftop capacity.
• Homes drove the boom. Residential made up 67% of new rooftop capacity, helped by the PM Surya Ghar scheme.

In this guide

1. Who are the top solar developers in India in 2026?
2. Who are the top 10 rooftop solar EPC companies in India in 2026?
3. How does Crisil Bridge to India rank solar developers?
4. Profiles: India's top rooftop solar project developers
5. What does the 2026 data say about India's rooftop solar market?
6. Rooftop vs utility-scale: who are India's largest solar developers overall?
7. How do you choose a rooftop solar developer or EPC company?
8. FAQs

Who are the top solar developers in India in 2026?

Short answer: Roofsol is India's #1 rooftop solar project developer in 2026, followed by BECIS, Enerparc, Fourth Partner Energy and SustVest.

The Crisil Bridge to India Top 10 project developers chart for June 2026 names eight companies. Here they are, with each company's share of OPEX capacity added in the year.

What "project developer" means here: In this ranking, a project developer is a company that installs rooftop plants it owns, under the OPEX model (also called RESCO, renewable energy service company). The customer pays nothing upfront and buys the solar power, usually for many years. Crisil Bridge to India sized this OPEX market at 300 MW for the year ended June 2026.

Together, the eight named developers installed about 48% of OPEX capacity. The rest (51%) came from smaller players.

Who are the top 10 rooftop solar EPC companies in India in 2026?

Short answer: Tata Power is India's #1 rooftop solar EPC company in 2026, a position it has held in every June edition since 2022. SolarSquare, Sunkind India and Roofsol follow.

An EPC (engineering, procurement and construction) contractor designs and builds the plant. Usually the customer owns it under the CAPEX model.

*The report marks these companies as players whose tracked capacity was installed only under the PM Surya Ghar scheme (the government's home rooftop subsidy programme).

The EPC market is far bigger than the OPEX market. EPC contractors installed 13,261 MW in the year, against 300 MW of OPEX. It is also far more fragmented: outside Tata Power, no EPC contractor crossed 2% market share, and "Others" accounted for 77% of the market.

Two companies appear on both lists: Roofsol (#1 developer, #4 EPC) and Enerparc (#3 developer, #8 EPC). Both build plants for clients and also own plants themselves.

How does Crisil Bridge to India rank solar developers?

Short answer: By rooftop solar capacity actually installed during the 12 months ended June 2026, measured in AC megawatts.

Crisil Bridge to India is the clean energy research arm of Crisil, a company of S&P Global. Its India Solar Rooftop Map comes out twice a year and is one of the most widely cited sources on India's rooftop solar market.

A few things make this ranking useful:

• It counts installed capacity only. Announcements, signed contracts and project pipelines do not count.
• It covers one year at a time. Rankings can move fast, because a company is only as high as its last 12 months of installations.
• It separates owners from builders. The project developer ranking covers OPEX plants a company owns. The EPC contractor ranking covers plants a company builds.
• It cross-checks its data. Crisil Bridge to India collects data from developers, equipment suppliers and state nodal agencies and cross-references it with government data where possible.
• "Rooftop" includes on-site ground systems. The report classifies all on-site solar systems, including ground-mounted ones at a consumer's premises, as rooftop.

Profiles: India's top rooftop solar project developers

1. Roofsol

• Headquarters: Mumbai (Powai) · Founded: 2016
• 2026 position: #1 project developer (22% share), #4 EPC contractor
• What it does: C&I (commercial and industrial) rooftop and group captive solar, under both EPC and OPEX models, plus a residential arm, Roofsol Homes.
• Scale: Over 400 MW across 250+ projects in India (June 2026).
• Recent moves: Raised ₹260 crore of debt from Aseem Infrastructure Finance in June 2026 to fund 100 MWp of new C&I capacity. Signed a 17 MWp OPEX power purchase agreement with Foxconn in Bengaluru in July 2026.

Roofsol has led the project developer ranking in both the 2025 and 2026 June editions, and its 22% share is more than double that of the next developer.

2. BECIS (BE-CIS)

• Headquarters: Singapore · India entity: BE Onsite Solar Energy Pvt Ltd (Pune)
• 2026 position: #2 project developer (9% share)
• What it does: "Energy-as-a-service" for C&I customers. BECIS owns and runs on-site solar, storage and other energy assets at zero upfront cost to the customer.
• Scale: 419 MWp of solar across 8 Asian countries, including 117 MWp in India (company website, October 2026).
• Backers: Pula Investments (represented by Berkeley Energy), KLP Norfund Investments, FMO and Siemens Financial Services.
• Recent moves: In June 2026, Axis Bank committed ₹2.6 billion of loans, partly guaranteed by GuarantCo, to fund up to 60 MW of BECIS projects in India.

3. Enerparc

• Headquarters: Bengaluru (India) · Parent: Enerparc AG, Hamburg, Germany
• 2026 position: #3 project developer (6% share), #8 EPC contractor
• What it does: EPC and IPP (independent power producer) projects, including rooftop RESCO plants and group captive open access farms.
• Scale: About 750 MW installed in India (April 2025). Globally, the group has 4.8 GW+ across 27+ countries (February 2026).
• Recent moves: Launched a power trading arm, Enerparc Power Trading Pvt Ltd, in February 2026.

4. Fourth Partner Energy

• Headquarters: Hyderabad · Founded: 2010
• 2026 position: #4 project developer (4% share)
• What it does: C&I renewable energy across rooftop solar, open access solar and wind, hybrid projects and battery storage.
• Scale: 370 MW of rooftop solar across 24 states (November 2025), plus 1.2 GW+ through open access.
• Backers: Norfund, TPG Rise, IFC, ADB and DEG. In August 2024 it raised $275 million of equity from IFC, ADB and DEG.

Fourth Partner has been in the project developer top 4 in every June edition since 2022.

5. SustVest

• Headquarters: Gurugram · Operating company: SolarGridX Ventures Pvt Ltd
• 2026 position: #5 project developer (3% share)
• Previous rank: #8 in the December 2025 edition
• What it does: Rooftop solar for factories, commercial buildings, hospitals, campuses and housing societies, under OPEX (RESCO) and CAPEX/EPC models, with an in-house EPC and procurement team.
• Scale: 30 MW+ across 80+ plants in 13 states, with about ₹100 crore of solar assets under management.
• Backers: Antler, WEH Ventures, Inflection Point Ventures, Anthill Ventures, DLF Family Office and Nikhil Kamath.

Read more about SustVest's #5 ranking.

6. candi solar

• Headquarters: Zurich, Switzerland · Founded: 2018 (India operations since 2018)
• 2026 position: #6 project developer (3% share)
• What it does: Mainly OPEX power purchase agreements for C&I customers in India and South Africa, for systems from about 100 kWp to over 5 MWp. Also leases and loans.
• Scale: A 220 MWp+ portfolio across India and South Africa, including about 85 MWp of open access in India (November 2025).
• Recent moves: Raised $58.5 million in IFC-led funding in November 2025, taking total funds raised past $200 million.

7. Evolve Energy

• Headquarters: Chennai · Founded: 2011
• 2026 position: #7 project developer (0.9% share)
• What it does: Manufacturing (under the EVVO brand), EPC, IPP asset ownership and O&M (operations and maintenance) for government, industrial and commercial customers.
• Scale: A funded portfolio of 150 MW, including assets under construction, across 15+ states (May 2026).
• Recent moves: Raised ₹1.05 billion of debt from Aseem Infra in May 2026 for a 30 MW rooftop and group captive portfolio.

8. Kalpa Power

• Headquarters: Pune · Incorporated: 2017
• 2026 position: #8 project developer (0.1% share)
• What it does: Turnkey solar EPC and O&M for C&I customers, covering rooftop and off-site open access projects, plus WATTBANK, a battery storage service for businesses launched in September 2025.
• Recent moves: Secured a 286 MWp utility-scale solar project in Madhya Pradesh in August 2026.

What does the 2026 data say about India's rooftop solar market?

Short answer: India's rooftop solar market is growing faster than ever, driven by homes, while costs keep falling and growth spreads beyond Gujarat.

Here are the headline numbers from the June 2026 Rooftop Map.

1. Homes are now the engine

Residential rooftop additions in the year (8,873 MW) were larger than the entire residential base installed up to June 2025 (8,008 MW). Most of this came from PM Surya Ghar. That is why four of the top 10 EPC contractors installed their tracked capacity only under the scheme.

2. The OPEX model is a small, specialist market

Only about 2% of new capacity was installed under OPEX, down from a 13% share of all capacity installed up to June 2025. OPEX plants are typically larger C&I systems, where the developer has to fund the plant and take on long-term performance risk. That makes it a much smaller market, served by a handful of well-funded specialists.

3. Costs have fallen sharply

Corporate EPC costs fell from a peak of ₹52.39 per Wp in Q2 2022 to ₹31.89 per Wp in Q2 2026, a drop of about 39%. Residential costs fell from ₹61.29 to ₹37.32 per Wp over the same period. The report credits softer module prices and more competition. These estimates include GST and import duties.

4. Growth is spreading beyond the leaders

Gujarat (7,715 MW) and Maharashtra (7,028 MW) remain India's biggest rooftop solar states, followed by Uttar Pradesh (3,115 MW), Rajasthan (2,654 MW), Kerala (2,132 MW) and Tamil Nadu (2,089 MW).

In home rooftop solar, Gujarat's share of the national base fell from 64% in June 2024 to 29% in June 2026 as other states caught up. Uttar Pradesh's share rose from 9% in June 2025 to 13%.

Rooftop vs utility-scale: who are India's largest solar developers overall?

Short answer: If you mean the largest solar developers of any kind, the list is led by utility-scale players like Adani Green, ReNew and NTPC. Rooftop solar is a separate market with different leaders.

India's solar market has two very different halves:

• Utility-scale developers build large solar parks, often hundreds of MW each, and sell power to DISCOMs (power distribution companies) or large buyers. As of 30 September 2025, JMK Research ranked the top developers by installed and pipeline capacity as Adani (40.5 GW), ReNew (22.9 GW), NTPC (16.9 GW), Greenko (15.4 GW) and JSW.
• Rooftop developers and EPC contractors build plants on, or next to, the building that uses the power: a home, factory, hospital or campus. Plants range from a few kW to a few MW.

If you are a business or homeowner looking to cut your own power bill, the rooftop companies in this guide are the relevant ones.

How do you choose a rooftop solar developer or EPC company?

Short answer: Match the company to your model (OPEX or CAPEX), then check its track record, financial strength and long-term service.

1. Decide OPEX or CAPEX first.

• OPEX (RESCO): zero upfront cost. You pay per unit of solar power. The developer owns and maintains the plant. Look at the project developer ranking.
• CAPEX: you own the plant and claim the savings and tax benefits yourself. Look at the EPC contractor ranking.

2. Check installed track record. Rankings based on installed capacity, like Crisil Bridge to India's, are a better guide than marketing claims. Ask for a list of live plants and references in your sector.

3. Check financial strength. Under OPEX, the developer funds your plant and must be around for 15 to 25 years. Look at investors, lenders and the assets it manages.

4. Ask how the plant will be maintained. Who cleans the panels, who monitors generation, and how quickly are faults fixed? What does the contract say if generation falls short?

5. Compare quotes on the same basis. Use per-watt cost (CAPEX) or per-unit tariff (OPEX), the same module and inverter class, and the same warranty terms.

FAQs

Who is the top rooftop solar developer in India in 2026?

Roofsol is India's #1 rooftop solar project developer in the Crisil Bridge to India India Solar Rooftop Map, June 2026, with a 22% share of OPEX capacity added in the 12 months ended June 2026. It also held #1 in the June 2025 edition.

Which is the largest rooftop solar EPC company in India?

Tata Power is India's #1 rooftop solar EPC contractor in the June 2026 Crisil Bridge to India ranking, with 13% of the 13,261 MW installed in the year. It has held #1 in every June edition since 2022.

What is the difference between a solar project developer and an EPC contractor?

A project developer owns the solar plant and sells the power to the customer under an OPEX (RESCO) model. An EPC contractor designs and builds the plant, which the customer usually owns under a CAPEX model.

How much rooftop solar is installed in India?

India had 35,739 MW of rooftop solar installed as of 30 June 2026, according to Crisil Bridge to India. 13,261 MW of this was added in the 12 months to June 2026.

How much does rooftop solar cost in India in 2026?

Crisil Bridge to India estimates EPC costs in Q2 2026 at about ₹31.89 per Wp for a typical 500 kW corporate system and ₹37.32 per Wp for a typical 5 kW home system, including GST and import duties. Actual prices vary by site, equipment and state.

Which state has the most rooftop solar in India?

Gujarat leads with 7,715 MW of rooftop solar as of 30 June 2026, followed by Maharashtra with 7,028 MW.

Where does SustVest rank among India's solar developers?

SustVest is ranked #5 among India's top rooftop solar project developers in the Crisil Bridge to India June 2026 report, up from #8 in the December 2025 edition.

About SustVest

SustVest (SolarGridX Ventures Private Limited) is ranked #5 among India's top rooftop solar project developers by Crisil Bridge to India (June 2026). SustVest designs, builds, owns and maintains rooftop solar plants for factories, commercial buildings, hospitals, educational campuses and housing societies under OPEX (RESCO) and CAPEX/EPC models. It has 30 MW+ installed across 80+ plants in 13 states and is backed by Antler, WEH Ventures, Inflection Point Ventures, Anthill Ventures, DLF Family Office and Nikhil Kamath.

Thinking about rooftop solar for your business? Get a free site assessment at sustvest.com

Methodology and sources

Rankings, market shares, market size, segment, state and cost figures come from the Crisil Bridge to India India Solar Rooftop Map, June 2026, which ranks companies by capacity installed in the 12 months ended June 2026 (AC MW). We have not reproduced the report's charts. Company profile facts come from the public sources below and are dated. Crisil Bridge to India does not endorse this article.

1. Crisil Bridge to India, India Solar Rooftop Map, June 2026 · Crisil Bridge to India
2. Mercom India, Roofsol raises ₹2.6 billion from Aseem Infra (June 2026)
3. Energetica India, Roofsol signs 17 MWp rooftop solar PPA with Foxconn (July 2026)
4. BECIS company website and BECIS: GuarantCo and Axis Bank financing in India (June 2026)
5. Saur Energy, Enerparc announces 35 MWp solar IPP in Gujarat (April 2025)
6. Saur Energy, Enerparc launches power trading arm EPTPL (February 2026)
7. SolarQuarter, Fourth Partner Energy closes ₹780 crore refinancing (November 2025)
8. PV Magazine India, Fourth Partner Energy raises $275 million (August 2024)
9. Mercom India, candi solar raises $58.5 million in IFC-led round (November 2025)
10. Mercom India, Evolve Green secures ₹1 billion debt from Aseem Infra (May 2026)
11. SolarQuarter, Kalpa Power secures 286 MWp project in Madhya Pradesh (August 2026)
12. PV Magazine India, India expected to add 41.5 GW of new solar capacity in FY2026 (JMK Research, top utility-scale developers as of 30 September 2025)