India added a record 4.9 gigawatt (GW) of rooftop solar capacity in the first nine months of the calendar year 2025, up 161% from 1.9 GW installed in the same period of the last fiscal, as per latest report by Mercom.
In the third quarter of the current year, the country added 2.1 GW of rooftop solar capacity, up 29% from 1.6 GW in Q2 2025, marking the highest quarterly additions to date. The installations rose over 164% from 791.1 MW in Q3 2024.
PM Suryaghar Yojana and Industrial Demand
The PM Suryaghar Muft Bijlee Yojana remained the dominant contributor during the period, accounting for 73% of rooftop solar installations during the quarter, Mercom said.
In Q3 2025, the industrial segment accounted for nearly 20% of the quarter’s installations. The commercial and the government segments accounted for nearly 6% and over 1% of capacity additions respectively.
Overall Solar Growth
Among states, Uttar Pradesh registered the highest number of rooftop solar installations accounting for 16% of the quarter’s installations. Maharashtra and Gujarat ranked second and third respectively accounting for more than 15% and 14% of capacity installed during the quarter. The top ten states accounted for more than 80% of installations, Mercom said.
During the first nine months of the calendar year 2025, Gujarat led the rooftop solar capacity addition with a 16% share.
As of September, the country’s cumulative installed rooftop solar capacity stood at 18.6 GW.
During Apr-Sep, the country added a total of 26.6 GW of solar capacity registering an increase of 53.7% from 17.3 GW added in the same period of last calendar year.
In the Jul-Sep quarter, 6.6 GW of large-scale solar capacity was commissioned, up 141% compared to 2.7 GW in the same period last year.
“The compounding effect of project commissioning in Q3 2025, building on strong activity in the previous two quarters, was driven by accelerated execution ahead of the ISTS waiver deadline and the upcoming ALMM II (approved list of models and manufacturers) compliance window. Together, these factors boosted commissioning activity in the first nine months of 2025,” Mercom said in its report.
The country’s cumulative solar capacity stood at 125.5 GW as of September. Large-scale projects accounted for 85.2% and rooftop solar for 14.8% of cumulative installations.