ICRA estimates that about one-third of India’s recently commissioned renewable energy capacity is facing grid curtailment due to delays in transmission infrastructure expansion, with the highest curtailment occurring during solar generation hours. The agency warns that continued transmission project delays could hamper renewable energy additions.
Around one-third of India’s recently commissioned renewable energy capacity is facing grid curtailment as transmission infrastructure expansion continues to lag renewable energy capacity additions, according to ICRA.
The ratings agency said around 33% of the 54.8 GW of recently commissioned renewable energy capacity was being evacuated through the temporary general network access (T-GNA) route as of May 2026. Curtailment under T-GNA is highest during solar generation hours, ranging from 50% to 60%.
ICRA said solar curtailment is most pronounced in Rajasthan and Gujarat, while it remains limited southern India, even during peak solar generation hours.
A pipeline of 107 GW of projects spanning solar, wind, hybrid, hydropower, pumped storage and thermal power, all of which have already been granted connectivity, is scheduled to be integrated into the interstate transmission system (ISTS) between fiscal 2026 and 2031.
