Top 10 rooftop solar companies in India | Leaders & Innovators 2025

Top 10 rooftop solar companies in India

Key areas for expansion include residential rooftops backed by digital finance offerings, and industrial rooftops deploying efficient modules and storage. Electricity tariffs are consistently on the increase throughout the majority of states and commercial and residential users are increasingly looking at rooftop solar systems as a hedge against long-term energy costs. Rooftop solar systems empower consumers through decentralized power generation. This decentralized energy model enables consumers to take on greater control with asset usage and costs, while also reducing grid dependency.

1. Tata Power Solar

A long-standing leader in rooftop and utility solar, Tata Power Solar ranks as India’s top rooftop EPC player. It has over 2.5 GW of rooftop installations and extensive expertise in residential, commercial, and industrial segments 

2. Adani Solar

India’s largest vertically integrated solar manufacturer, Adani Solar is building massive cell and module capacity and is a key EPC player .

3. Vikram Solar

Known for high-efficiency modules and EPC execution across 22+ states, Vikram Solar also played a role in India’s first all-solar airport project 

4. Fourth Partner Energy

With an installed portfolio exceeding 1.35 GW, Fourth Partner caters to C&I clients like Nestlé, Airtel, and Unilever, backed by strong investor support 

5. Sunsure Energy

Specialising in EPC for mid-large rooftop systems (50–800 kW), Sunsure is backed by Partners Group and aims to build 5 GW of clean energy infrastructure 

6. Mahindra Susten

The cleantech arm of Mahindra, this company has installed over 1.2 GW of rooftop solar for major projects and has earned several EPC awards 

7. RelyOn Solar

Focused on design, installation, and maintenance, RelyOn has over 1,600 installations—300 of which are rooftop systems 

8. SB Energy

Backed by SoftBank and Ares, SB Energy is a major utility solar developer with ~2 GW operational and a robust pipeline, including rooftop solutions.

9. Renew Power

An integrated IPP and EPC developer, Renew has executed over 200 rooftop installations totaling 40 MW in 35+ cities .

10. Waaree Energies Ltd.

One of India’s largest module manufacturers (2 GW capacity), Waaree offers EPC and rooftop solutions nationwide, with presence in 68 countries .

11. Loom Solar

Rapidly growing in rooftops (3–100 kW systems across 700+ cities), Loom offers efficient plug-and-play solutions and has expanded into batteries.

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