5.4 GW Of Solar Additions In June, Powered By ISTS Deadline

Deadlines are wonderful things. That was amply substantiated as India's green developers rushed to meet a June 30 deadline to get a 100% ISTS exemption for their solar and wind projects. The result was over 5.4 GW of solar additions during the month, a record monthly addition. In fact, the figure is higher than the numbers achieved in 2020-21, when the pandemic limited additions to just 4.2 GW. 

India added 5,798 megawatts (MW) of renewable energy capacity in June, driven by solar installations, the Central Electricity Authority (CEA) said in its latest monthly report. This comes at a time when the Inter-State Transmission System (ISTS) waiver deadline came to an end last month, pushing developers to commission new projects, with many projects witnessing much earlier commissioning than their proposed commissioning dates. 

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Solar accounted for 5,413 MW of the additions in the month of June, while wind contributed 383 MW. The country’s total installed renewable energy capacity (excluding hydro) rose to 184,621 MW at the end of June, up from 178,823 MW in May.

Cumulative solar capacity reached 116,247 MW, while wind stood at 51,675 MW, according to the report.

India typically sees a spike in commissioning activity in June ahead of the monsoon season. The month’s solar additions were among the highest recorded in a single month.

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Solar Additions Spiked In 2025

In June 2024, India had added 1,433 MW of renewable energy capacity, including 1,197 MW from solar and 234 MW from wind. This is against the addition of 5.4 GW of solar energy in June 2025, a 275% jump over June last year. 

Total renewable capacity at the time stood at 148,085 MW, with 85,474 MW from solar and 46,656 MW from wind.

The data showed minimal additions in other segments, including small hydro, biomass, and waste-to-energy.

India is targeting 500 GW of non-fossil fuel capacity by 2030 as part of its broader climate goals.