The Central Electricity Authority (CEA) has been tasked with overseeing the execution of the project to ensure compliance with all safety and regulatory standards set by both Central and State governments.
As part of this oversight, all State Transmission Utilities (STUs) are required to submit monthly progress reports to the Ministry of New and Renewable Energy (MNRE). Additionally, MNRE is conducting regular Project Appraisal Committee (PAC) meetings with state-level officials to address challenges and expedite implementation.
As part of GEC Phase-II, Tamil Nadu has been sanctioned a significant project to facilitate the evacuation of around 4,000 MW of renewable energy. The project includes the construction of 624 circuit kilometers (ckm) of transmission lines and the addition of 2,200 MVA substation capacity.
The total estimated cost is ₹719.76 crore, with the Centre providing 33% of the funding as Central Financial Assistance (CFA). The Tamil Nadu Transmission Corporation Limited (TANTRANSCO) is the implementing agency and has divided the work into nine packages.
As of June 30, 2025, Tamil Nadu has a total installed renewable energy capacity of 25,749.12 MW. This includes 11,830.37 MW from wind power, 10,570.88 MW from solar power, 1,046.62 MW from bio power, 123.05 MW from small hydro power, and 2,178.2 MW from large hydro power.
The state is also well-integrated with the National Grid through robust high-capacity transmission infrastructure, including 765kV and 400kV lines, as well as the +800kV HVDC system. These systems support reliable and secure interstate power transfer, which is being continuously upgraded to meet evolving energy demands.
