Tata Power Solar, Jakson Green, Sterling & Wilson, Amara Raja Infra, and HARTEK were the top utility-scale solar engineering, procurement, and construction (EPC) service providers in 2025, according to Mercom’s recently released India Solar Market Leaderboard 2026 Report.

Tata Power Solar emerged as the leading utility-scale solar EPC company in 2025 with a 19% market share, followed by Jakson Green with 15%. Sterling & Wilson, Amara Raja Infra, and HARTEK rounded off the top five.

The top five utility-scale solar EPC service providers together accounted for 64% of the market share in 2025, indicating moderate market consolidation and highlighting the importance of execution strength, access to large projects, and timely delivery.

In 2025, Tata Power Solar’s growth was driven by the execution of large central government projects, which significantly increased its commissioned capacity. Its major commissioned installations in 2025 include a 1 GW project for SJVN and a 300 MW project for NHPC.

In 2025, Jakson Green secured the second position with a 15% market share, supported by the execution of utility-scale projects. During the year, Jakson Green and Blue Leaf Energy announced a partnership to develop a 1 GW solar project in Rajasthan, representing an investment of ₹34.85 billion (~$400 million).

Coming in third, Sterling & Wilson accounted for 12% of the utility-scale solar EPC installation market share in 2025, supported by improved project conversion and faster execution timelines. The company also secured a ₹13.81 billion solar EPC order from Adani Green.

Amara Raja Infra ranked fourth on the utility-scale solar EPC list, entering the top ten in 2025 and expanding its solar EPC presence through its infrastructure execution experience.

HARTEK rounded off the top five EPC service providers in 2025, accounting for almost 9% of the market share. In November 2025, HARTEK commissioned a 300 MW solar EPC project in Rajasthan.

Project rankings were shaped by execution timelines, grid connectivity availability, and progress in finalizing power purchase and sale agreements. EPC players with strong order pipelines, financial strength, and proven execution track records were better positioned to convert projects into commissioned capacity. The entry of infrastructure-focused companies, along with the presence of integrated players across development, manufacturing, and EPC segments, reflects a gradual shift toward a more execution-focused and diversified EPC landscape.

India’s utility-scale solar EPC market in 2025 was driven by the commissioning of large central and state projects, along with accelerated project execution ahead of the implementation of the Approved List of Models and Manufacturers List-II for solar cells from June 2026. This upcoming policy requirement created a time-bound execution window, leading developers and EPC players to accelerate project timelines to avoid potential supply constraints and compliance requirements in the post-deadline phase. As a result, project commissioning activity was relatively accelerated during the year.

India recorded its highest-ever annual solar capacity addition in the calendar year 2025, installing 36.6 GW, a 43% increase over the 25.6 GW added in 2024, according to Mercom India’s Q4 & Annual 2025 India Solar Market Update Report.

In 2025, the country installed 29.5 GW of large-scale solar capacity, a 31% increase from the previous year. Open access projects alone accounted for 26% of large-scale additions, reflecting growing demand from commercial and industrial consumers seeking cost savings and energy security. This provides long-term visibility and a steady stream of opportunities for solar EPC contractors.

Mercom’s India Solar Market Leaderboard report covers the market landscape across the entire supply chain. For the detailed and comprehensive report, click here.

The Market Share Tracker, offering quarterly data insights on your competitors’ growth rates, is also available.