Tata Power announced the successful commissioning of the final two Extra High Voltage (EHV) transmission lines under the South East UP Power Transmission Company Limited (SEUPPTCL) project on March 25, 2026. This completion finalizes the entire EHV transmission network for SEUPPTCL in Uttar Pradesh. The new infrastructure, including 400 kV Tanda–Gonda and Gonda-Basti double circuits, will evacuate over 4,000 MW of thermal power, boosting grid stability.
Final Milestones Achieved in UP Transmission Project
Tata Power today confirmed the successful commissioning of the final two transmission lines—the 400 Kilovolt (Kv) Tanda–Gonda and 400kV Gonda-Basti double circuit—spanning 154 circuit kilometres (Ckm) in Uttar Pradesh. With this achievement, the company has successfully commissioned all Extra High Voltage (EHV) transmission lines and substations under the South East UP Power Transmission Company Limited (SEUPPTCL) project.
Expanded Network Capacity
The fully commissioned SEUPPTCL network now integrates three 765 kV lines (951 Ckm), fourteen 400 kV lines (566 Ckm), and three 765/400 kV substations with a total transformation capacity of 3460 MVA across the state. The commissioning of four major assets, including the 765 kV Mainpuri-Bara and 765 kV Mainpuri-Unnao Single Circuit Lines, will facilitate the safe and reliable evacuation of over 4,000 MW of thermal power generated within Uttar Pradesh, supporting long-term energy security.
Project Scale and Execution Details
The comprehensive project involved extensive planning and execution across several key assets. The combined work included the deployment of over 45,000 metric tonnes of tower steel and the stringing of more than 8,600 kilometres of conductors. The execution successfully navigated 139 critical crossings, involving existing transmission infrastructure, railway tracks, gas pipelines, highways, and rivers, all while ensuring full compliance with environmental norms.
Tata Power’s Growing Transmission Footprint
The successful completion of these seventeen 765 kV and 400 kV corridors, covering 1,517 circuit kilometres in UP, marks a significant upgrade for the state’s transmission infrastructure. Overall, Tata Power’s total operational transmission network has now expanded to 5,466 circuit kilometres, with an additional 1,863 circuit kilometres currently under construction. This growth highlights the company’s strengthening role in modernizing India’s high-voltage transmission backbone.
Corporate Context
SEUPPTCL is a joint venture led by Tata Power in partnership with ICICI Bank and global investors, formed through the resolution of stressed assets in the power sector. The announcement was made on March 25, 2026.
Source: BSE
