POWERGRID Narela Transmission, a wholly owned subsidiary of Power Grid Corporation of India (POWERGRID), has commissioned the final interstate transmission system (ISTS) to evacuate 8.1 GW of power from solar energy zones in Rajasthan.

The commissioning marks the completion of the infrastructure awarded as a part of national transmission planning for renewable integration under Phase II Part G. It will facilitate the evacuation of solar power through high-capacity 765 kV corridors and strengthen grid stability.

POWERGRID Narela Transmission won the project through tariff-based competitive bidding conducted by PFC Consulting. The transmission system will operate on a build, own, operate, and maintain basis.

The projects are located across Rajasthan, Haryana, and Delhi, with the gas-insulated substation (GIS) at Narela serving as a major pooling and transformation point.

The scope included the establishment of a new 765/400 kV GIS at Narela, Delhi, with a transformation capacity of 3×1500 MVA, along with associated bus reactors and line bays.

The transmission system also included construction of the Khetri–Narela 765 kV double-circuit transmission line with a route length of 180 km, the establishment of two 765 kV line bays at Khetri, and the loop-in, loop-out of the 765 kV Meerut–Bhiwani single-circuit transmission line at the Narela substation.

The system involved deployment of both GIS and air-insulated substation configurations, along with high-voltage transmission lines across Rajasthan, Haryana, and Delhi.

Earlier this year, POWERGRID Bhadla Sikar Transmission commissioned an ISTS in Rajasthan to evacuate 8.1 GW of power from Solar Energy Zones under Phase II – Part E.

In January, the company won REC Power Development and Consultancy’s auction to establish an ISTS to integrate 250 MW of renewable energy at Davanagere and 2.75 GW at Bellary in Karnataka.

In December 2025, POWERGRID Khavda II-B Transmission commissioned an ISTS to evacuate 4.5 GW of renewable energy from the Khavda polling station in Kutch District, Gujarat, under Phase-II, Part-B.