India’s transmission infrastructure comprised approximately 509,603 circuit kilometers of transmission lines and 1,478 gigavolt-amperes of transformation capacity as of June 2026, according to Mercom India Research’s State of Transmission Infrastructure in India report. India’s transmission network has grown significantly over the past decade, with transmission line length increasing by 50.8% and transformation capacity more than doubling, rising 111.7% between April 2016 and June 2026.