India added 7.8 GW of open-access solar capacity in 2025, a 0.5% increase from 7.7 GW in 2024, according to the “Q4 & Annual 2025 India Solar Open Access Market Report” from Mercom India.
Cumulative open-access capacity exceeded 30 GW as of Dec. 31, 2025.
“Solar open access demand remains strong, particularly from large industrial users and data centers seeking long-term tariff certainty while meeting sustainability goals,” said Raj Prabhu, CEO of Mercom Capital Group.
He added that while rising costs and tighter compliance requirements may affect near-term additions, underlying market drivers remain solid.
Karnataka led installations in 2025 with more than 24% of annual additions, followed by Maharashtra at over 20% and Rajasthan at 18%.
In the fourth quarter of 2025, India installed 1.6 GW of open-access capacity, down 27% from 2.2 GW in the third quarter and more than 30% lower than the 2.3 GW installed in the fourth quarter of 2024.
