India’s Top Rooftop Solar Installers 2025: Market Leaders
⚡ Quick Read
- What happened: India added 7.1 GW of rooftop solar in 2025, a 123.3% YoY increase, with Tata Power, Roofsol, and Mahindra leading the market.
- Why it matters: The dominance of the residential segment and the PM Surya Ghar scheme are driving massive demand for EPC services and distributed solar solutions.
- Watch: Increasing competition from smaller players, who now account for 74% of the market, signaling a shift in the competitive landscape.
Background and Context
The Indian rooftop solar market experienced an unprecedented surge in 2025, with total capacity additions reaching 7.1 GW, representing a remarkable 123.3% increase over the 3.2 GW installed in 2024. According to the Mercom India Solar Market Leaderboard 2026, this growth has pushed India’s cumulative rooftop solar capacity to 20.8 GW as of December 2025. The primary catalyst for this expansion has been the central government’s PM Surya Ghar: Muft Bijli Yojana, which streamlined processes through the JanSamarth platform and provided critical financial incentives.
Key Details
The market remains highly fragmented, yet a few key players have solidified their positions. The top five companies—Tata Power Solar, Roofsol Energy, Mahindra Solarize, Kalpa Power, and HARTEK—collectively captured 23.6% of the market share. Tata Power Solar maintained its leadership, accounting for 19.2% of total installations, largely driven by its robust residential portfolio in states like Maharashtra, Gujarat, and Tamil Nadu. Roofsol Energy secured the second position with a strategic focus on the Commercial and Industrial (C&I) segment, bolstered by a ₹2.1 billion funding infusion from Aseem Infrastructure Finance. Mahindra Solarize, Kalpa Power, and HARTEK rounded out the top five, each demonstrating significant year-over-year growth through diversified EPC offerings and specialized grid integration services.
What This Means for EPCs and Developers
For EPC contractors, the current market dynamics indicate a shift toward high-volume, standardized residential projects alongside complex C&I installations. The success of the PM Surya Ghar scheme, which includes waived feasibility checks for systems up to 10 kW and automatic net metering, has significantly reduced project timelines. However, the fact that companies outside the top 10 account for nearly 74% of total installations suggests that the market is becoming increasingly competitive. Developers must focus on operational efficiency, digital integration, and regional presence to capture market share in this rapidly evolving landscape.
What Happens Next
The influx of new, smaller players indicates that the rooftop solar market in India is moving toward a more decentralized structure. As the residential segment continues to dominate—contributing 58% of the total growth—EPCs should expect continued policy support and state-level subsidies. The long-term outlook for the India renewable energy sector remains bullish, with the rooftop segment playing a pivotal role in achieving the nation’s ambitious clean energy targets and enhancing grid resilience through distributed generation.
