**Executive Summary**
This document is a response to a starred question in Lok Sabha regarding power transmission and grid-strengthening projects in Tamil Nadu, answered on February 12, 2026. It addresses delays in Centrally approved projects, the Government’s timelines, and monitoring mechanisms. The document contains details of projects under implementation and those under bidding, along with their respective timelines.
**Key Points / Main Content**
* **Overall Project Status:**
* Delays in power transmission projects for Renewable Energy integration in Tamil Nadu have no impact on reliable electricity supply.
* Five Inter State Transmission System (ISTS) projects are under implementation. Two projects are delayed due to supply constraints of Transformers and Gas Insulated Substation (GIS) equipment.
* Nine Intra State Transmission System (In-STS) projects approved under Green Energy Corridor (GEC)-II are being implemented. Two are delayed due to Right-of-Way (RoW) issues.
* **Monitoring Mechanisms:**
* ISTS projects are monitored by Central Electricity Authority (CEA), Central Transmission Utility of India Ltd. (CTUIL), and the Ministry of Power.
* Regular stakeholder consultations are conducted with State governments, District Authorities, and Transmission Project developers.
* GEC-II and In-STS projects are monitored by CEA and State Transmission Utilities (STU). Ministry of New and Renewable Energy (MNRE) monitors GEC-II implementation. High-level review meetings are held at the State Government level.
* **Project Timelines:**
* **Annexure-I**: Includes detailed timelines for five under-implementation ISTS projects, including their Scheduled Commercial Operation Date (SCOD) and Anticipated SCOD.
* **Annexure-II**:
* **Part A**: Lists six under-implementation In-STS projects under the GEC-II scheme with their SCOD and Anticipated SCOD.
* **Part B**: Identifies three In-STS projects under bidding.
**Impact Analysis**
**Stakeholder:** Tamil Nadu Electricity Board (TNEB) Ltd.
**Impact:** Their report was used to determine that project delays do not impact electricity supply.
**Action Required:** None explicitly stated in document.
**Stakeholder:** Transmission Project Developers
**Impact:** Face challenges like equipment supply constraints and Right-of-Way issues that cause project delays.
**Action Required:** Engage in stakeholder consultations and implement mitigation strategies suggested by the Central Government.
**Stakeholder:** Central Electricity Authority (CEA), Central Transmission Utility of India Ltd. (CTUIL), State Transmission Utilities (STU), Ministry of Power (MNRE), State Government
**Impact:** Responsible for monitoring the implementation of the projects.
**Action Required:** Conduct regular review meetings and monitor the progress of the projects.
Key Entities Referenced
Ministry of Power: The Indian government ministry responsible for power generation, transmission, and distribution.
Tamil Nadu: Indian state where power transmission and grid-strengthening projects are being implemented.
Green Energy Corridor (GEC)-II Scheme: A scheme under which Intra State Transmission System (In-STS) projects are approved by the Ministry of New and Renewable Energy.
Central Electricity Authority (CEA): Central agency involved in monitoring and reviewing transmission projects.
TANTRANSCO: Tamil Nadu Transmission Corporation Limited, implementing agency for Green Energy Corridor (GEC)-II Scheme in Tamil Nadu.
GOVERNMENT OF INDIA
MINISTRY OF POWER
LOK SABHA
STARRED QUESTION NO.196
ANSWERED ON 12.02.2026
POWER TRANSMISSION OR GRID-STRENGTHENING PROJECTS FOR
TAMIL NADU
*196. SHRI SASIKANTH SENTHIL:
Will the Minister of POWER
be pleased to state:
(a) whether any Centrally approved power transmission or grid-strengthening
projects for Tamil Nadu are delayed, affecting reliable electricity supply to
industries and households and if so, the details thereof; and
(b) whether the Government has fixed any timelines and monitoring
mechanisms to urgently complete such central power projects in Tamil Nadu
and if so, the details thereof?
A N S W E R
THE MINISTER OF POWER
(SHRI MANOHAR LAL)
(a) & (b) : A Statement is laid on the Table of the House.
*******STATEMENT
STATEMENT REFERRED TO IN REPLY TO PARTS (a) & (b) IN RESPECT OF LOK
SABHA STARRED QUESTION NO.196 FOR REPLY ON 12.02.2026 REGARDING
POWER TRANSMISSION OR GRID-STRENGTHENING PROJECTS FOR TAMIL
NADU ASKED BY SHRI SASIKANTH SENTHIL
*********
(a) & (b) : As reported by TNEB Ltd., the delay in completion of the power
transmission projects approved by the Central Government for integration of
Renewable Energy (RE) generation in the State of Tamil Nadu do not have any
impact on the reliable electricity supply to industries and households.
Presently, five Inter State Transmission System (ISTS) projects are under
implementation in Tamil Nadu for integration of Renewable Energy (RE)
generation and grid-strengthening. The details of status of the ISTS projects
along with the timelines are given in Annexure-I. The delay in the two projects
is primarily due to supply constraint of Transformers and Gas Insulated
Substation (GIS) equipment.
Also, nine Intra State Transmission System (In-STS) projects have been
approved by Ministry of New and Renewable Energy (MNRE) under Green Energy
Corridor (GEC)-II Scheme in Tamil Nadu, which are being implemented by Tamil
Nadu Transmission Corporation Limited (TANTRANSCO). The details of the
status of projects under GEC-II along with timelines are given in Annexure-II.
The delay in the two under implementation GEC-II projects is primarily due to
Right-of-Way (RoW) issues faced by TANTRANSCO.
The following measures are taken by the Central Government to ease and
mitigate the challenges and issues faced by Transmission Project developers:
I Monitoring mechanisms for ISTS projects:
I. Monitoring of Projects: Transmission projects are monitored and
reviewed by the Central Agencies including Central Electricity
Authority (CEA) and Central Transmission Utility of India Ltd. (CTUIL)
periodically and also reviewed in the Ministry of Power.
II. Stakeholder Consultations: Regular meetings are conducted with State
governments, District Authorities and concerned Transmission Project
developers to resolve bottlenecks collaboratively.
III. Monitoring mechanisms for projects under GEC-II scheme and In-STS:
The projects are monitored by the CEA and State Transmission Utilities
(STU) with regular review meetings held internally and with project
developers to expedite the works. MNRE is monitoring the
implementation of the GEC-II scheme through the Project Appraisal
Committee (PAC). Also high level review meetings are held at State
Government to monitor the progress of the projects.
***********ANNEXURE-I
ANNEXURE REFERRED TO IN PARTS (a) & (b) OF THE STATEMENT LAID IN
REPLY TO STARRED QUESTION NO. 196 ANSWERED IN THE LOK SABHA ON
12.02.2026 REGARDING POWER TRANSMISSION OR GRID-STRENGTHENING
PROJECTS FOR TAMIL NADU
***********
The details of under implementation ISTS projects in Tamil Nadu along with
timelines are as given below:
Sl. Name of the Transmission Project SCOD Anticipated
No. SCOD
Transmission System under ISTS for Dec-26 Dec-26
1 evacuation of power from Kudankulam Unit -
3 & 4 (2x1000 MW)
Augmentation of 2x500 MVA, 400/230 kV Sep-25 Oct-26
2 transformation capacity (3rd & 4th ICTs) at
Karur Pooling Station
Augmentation of Transformation capacity at Dec-25 Jun-26
400/230KV Tuticorin-II GIS Pooling Station in
3
Tamil Nadu by 500 MVA,400/230KV ICT (6th)
to meet N-1 reliability of RE Pooling Station
Augmentation of 1x500 MVA, 400/230 kV ICT Mar-27 Mar-27
4
(7th) at Tuticorin-II GIS Sub Station
Augmentation of Transformation capacity by Jun-27 Jun-27
5 1x500 MVA, 400/230kV ICT (4th) at
Kalivanthapattu S/s in Tamil Nadu
ICT-Interconnecting Transformer; MW- Mega Watt; GIS-Gas Insulated Substation
***********ANNEXURE-II
ANNEXURE REFERRED TO IN PARTS (a) & (b) OF THE STATEMENT LAID IN
REPLY TO STARRED QUESTION NO. 196 ANSWERED IN THE LOK SABHA ON
12.02.2026 REGARDING POWER TRANSMISSION OR GRID-STRENGTHENING
PROJECTS FOR TAMIL NADU
***********
The details of In-STS Projects in Tamil Nadu under GEC-II scheme are given as
below:
(A) Details of under Implementation Projects along with timeline
Sl. Name of the Transmission project SCOD Anticipated
No. SCOD
1 400 kV line associated with 30.06.2026 30.06.2026
Samugarengapuram 400/230-110 kV SS
2 230/110kV line associated with 30.06.2026 30.06.2026
Samugarengapuram 400/230-110kV SS
3 Establishment of 230/110 kV Digital 18.08.2026 18.08.2026
substation at Poolavady 230 kV SS.
4 230/110 kV line associated with Poolavadi 19.11.2025 20.11.2026
230 kV SS
5 Establishment of 230/110 kV Substation at 19.05.2026 19.05.2026
Muppandal
6 230/110 kV line associated with Muppandal 27.08.2025 30.06.2026
230 kV SS
SS-Substation
(B) Details of Under Bidding Projects
Sl. No. Name of the Transmission project and scope
1 Establishment of 400/230-110 kV SS at Samugarengapuram
2 Establishment of 230/110 kV substation at Kongalnagaram
3 230/110 kV line associated with Kongalnagaram 230 kV SS
***********