India added 1.1 GW of solar open access capacity in Q1 2025, a 48% decline from the previous quarter and 47% lower year-on-year, according to Mercom India's latest report.

The drop is attributed to module shortages, financial year-end commissioning rush, limited transmission infrastructure, and uncertainty over the Inter-State Transmission System (ISTS) waiver. Despite the challenges, demand for clean energy—solar, wind, and storage—continues to grow. Solar open access contributed 19.8% to total large-scale installations, with Maharashtra leading in Q1 capacity addition at 29%. Of the new projects, 67.4% were standalone solar, 32% hybrid, and 0.6% floating. India’s cumulative installed solar open access capacity reached 21.5 GW, with Karnataka, Maharashtra, and Tamil Nadu as top contributors. The development pipeline stood at over 31 GW. Meanwhile, REC trading on IEX rose 155% QoQ, and Green TAM volume increased 72%. The report also details tariffs, PPA prices, and open access charges across 15 states.