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.