**Subject: Summary of Lok Sabha Unstarred Question No. 1636 Regarding Green Energy Corridor Phase II in Tamil Nadu**
This document summarizes the response provided by the Minister of State for New and Renewable Energy and Power, Shri Shripad Yesso Naik, to Lok Sabha Unstarred Question No. 1636, answered on July 30, 2025, concerning the Green Energy Corridor (GEC) Phase II project in Tamil Nadu.
The Union Government, through the Central Electricity Authority (CEA) and the Ministry of New and Renewable Energy (MNRE), is actively monitoring the implementation of GEC Phase II in Tamil Nadu. The CEA ensures adherence to safety standards, while MNRE reviews progress via monthly reports from State Transmission Utilities (STUs) and Project Appraisal Committee (PAC) meetings with state officials.
Under GEC Phase II, a project has been sanctioned for Tamil Nadu to evacuate approximately 4000 MW of renewable energy. This entails the construction of 624 circuit kilometers (ckm) of transmission lines and 2200 MVA of substation capacity. The total estimated project cost is ₹719.76 crore, with the Union Government providing Central Financial Assistance (CFA) covering 33% of the project cost. Tamil Nadu Transmission Corporation Limited (TANTRANSCO) is the implementing agency, dividing the project into 9 packages.
As of June 30, 2025, Tamil Nadu's total installed renewable energy capacity, including grid-connected sources, is 25749.12 MW. This is composed of: Wind Power (10570.88 MW), Small Hydro Power (123.05 MW), Bio Power (11830.37 MW), Solar Power (1046.62 MW) and Large Hydro (2178.2 MW).
Tamil Nadu is well-integrated with the national grid through high-capacity transmission corridors, including 765kV and 400kV lines, as well as an 800kV HVDC System. These facilitate power transfer through the Inter-State Transmission System (ISTS) network. Power transfer capacities are continually strengthened to address evolving power transfer scenarios, ensuring reliability and security.
Key Entities Referenced
Green Energy Corridor GEC Phase II: A project to enhance renewable energy transmission. It involves the development of transmission infrastructure to integrate renewable energy into the grid.
Tamil Nadu: A state in southern India where the Green Energy Corridor Phase II project is being implemented to enhance renewable energy transmission.
SHRI S JAGATHRATCHAKAN: The Member of Parliament who raised the question about the Green Energy Corridor project in Tamil Nadu.
SHRI SHRIPAD YESSO NAIK: The Minister of State for New and Renewable Energy and Power who answered the question regarding the Green Energy Corridor project.
Central Electricity Authority CEA: The organization entrusted with monitoring the Green Energy Corridor Phase II projects, ensuring compliance with safety standards.
MNRE: Ministry of New and Renewable Energy, the ministry responsible for overseeing the Green Energy Corridor project.
Tamil Nadu Transmission Corporation Limited TANTRANSCO: The implementing agency for the Green Energy Corridor Phase II project in Tamil Nadu.
National Grid: The interconnected electricity transmission network that facilitates the transfer of power between Tamil Nadu and other states/regions.
GOVERNMENT OF INDIA
MINISTRY OF NEW AND RENEWABLE ENERGY
LOK SABHA
UNSTARRED QUESTION NO. 1636
ANSWERED ON 30/07/2025
GREEN ENERGY CORRIDOR-PHASE II IN TAMIL NADU
1636. SHRI S JAGATHRATCHAKAN
Will the Minister of NEW AND RENEWABLE ENERGY be pleased to state:
(a) Whether the Union Government has reviewed the progress of the Green Energy Corridor
(GEC) Phase-II in Tamil Nadu to enhance renewable energy transmission and if so, the
details thereof;
(b) the details of funds allocated and infrastructure developed under GEC Phase-II in Tamil
Nadu;
(c) whether Tamil Nadu’s renewable energy capacity has been adequately integrated into the
national grid and if so, the details thereof; and
(d) the steps taken by the Government to address transmission bottlenecks in southern States
like Tamil Nadu?
ANSWER
THE MINISTER OF STATE FOR NEW & RENEWABLE ENERGY AND POWER
(SHRI SHRIPAD YESSO NAIK)
(a) The Union Government is closely monitoring the implementation of the Green Energy Corridor (GEC) Phase-
II including Tamil Nadu. Central Electricity Authority (CEA) is entrusted with monitoring of the projects and to
ensure that the projects follow all the norms (including safety standards) prescribed by Central Government and
State Government. All the State Transmission Utilities (STUs) submit monthly progress report to MNRE.
Additionally, MNRE is reviewing the progress through Project Appraisal Committee (PAC) meetings with
respective state officials to assess the challenges and accelerate implementation.
(b) Under Green Energy Corridor (GEC) Phase-II, a project has been sanctioned to Tamil Nadu for evacuation of
approximately 4000 MW renewable energy capacity. The project includes construction of 624 circuit kilometres
(ckm) of transmission lines and 2200 MVA substation capacity. The total estimated project cost is ₹719.76 crore,
with Central Financial Assistance (CFA) of 33% of the project cost. Tamil Nadu Transmission Corporation Limited
(TANTRANSCO) is the implementing agency for the project and has divided the project into 9 packages.
(c)&(d) Details of total installed renewable energy capacity (including grid connected) as on 30.06.2025 in the
state of Tamil Nadu is as under:
( In MW)
Small
Wind Bio Solar Large
Hydro Total
Power Power Power Hydro
Power
10570.
123.05 11830.37 1046.62 2178.2 25749.12
88
The State of Tamil Nadu is well connected with National Grid through high capacity transmission corridors
comprising 765kV & 400kV lines as well as +800kV HVDC System which facilitates smooth transfer of power
through Inter State Transmission System (ISTS) network between Tamil Nadu and other States/Region. Power
transfer capacities are being strengthened on a continual basis to address changed power transfer scenarios as and
when the requirement arises, with reliability & security.
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