Tata Power Solar, Roofsol Energy, Mahindra Solarize, Gentari (formerly Amplus Solar), and Kalpa Power emerged as the top rooftop solar installers in India in 2024, according to Mercom India’s India Solar Market Leaderboard 2025. Together, these five companies accounted for nearly 30% of the total rooftop solar market. India added 3.2 GW of rooftop solar capacity in 2024, marking an 86% increase from 1.7 GW in 2023, as per Mercom India’s 2024 Q4 & Annual Mercom India Rooftop Solar Market Report.