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Tata Power Completes High-Altitude Northern Transmission Link
A new 400 kV line strengthens hydropower evacuation from Uttarakhand and enhances grid reliability across multiple northern states under the NRSS XXXVI project.
www.tatapower.com
The newly commissioned 400 kV Koteshwar–Rishikesh transmission line is designed to move hydropower from the Tehri–Koteshwar complex in Uttarakhand to major demand centres across northern India. This infrastructure is relevant for grid operators, system planners, and engineers working on high-voltage transmission, renewable integration, and cross-state power evacuation. By forming a continuous evacuation path for up to 1,000 MW of hydropower, the line contributes directly to load balancing, grid stability, and the efficient use of existing hydropower assets.
Engineering Requirements in Mountainous Terrain
The project’s main technical challenge involved construction across the Himalayan foothills of New Tehri and Dehradun districts, where tower installations required access at altitudes exceeding 1,816 meters. Conventional transport was not feasible in several segments, leading teams to rely on head-loading and narrow temporary pathways for moving materials. This method is often used in remote terrain when gradients and clearances restrict vehicular access, and it influences construction sequencing and safety planning.
Work in forested and environmentally sensitive zones required strict adherence to clearance protocols, including permissions for around 103 hectares of land. These requirements shaped tower placement, conductor stringing schedules, and equipment movement strategies. More than 500 technicians and skilled workers were deployed to complete the physical execution phase between November 2024 and December 2025, staying within the planned timeline despite seasonal constraints common to high-altitude construction.
Integration Within the NRSS XXXVI Project
The Koteshwar–Rishikesh line is the third major element commissioned under the wider NRSS XXXVI Transmission Ltd. project, which is owned by Resurgent Power Ventures Pvt. Ltd.—a joint venture of ICICI Bank Limited, Tata Power, and international investors. Two earlier segments—the 400 kV LILO Sikar–Neemrana double-circuit line (3.1 circuit km) and the 400 kV LILO Babai–Bhiwani double-circuit line (222 circuit km)—have already been placed in service.
Together, these components contribute to a reinforced northern transmission corridor. The new line connects Uttarakhand to Haryana, Punjab, Uttar Pradesh, Jammu & Kashmir, Himachal Pradesh, Chandigarh, Rajasthan, and Delhi, improving power-sharing flexibility and reducing congestion risks during high-demand periods. By integrating hydropower, which can respond rapidly to load variations, the system gains operational advantages for frequency management and peak-load support.
Transmission Capacity Growth
With this commissioning, Tata Power’s transmission portfolio has reached 7,083 circuit kilometres either operational or under execution across India. For engineers evaluating infrastructure reliability, this expansion demonstrates the company’s focus on grid-scale execution capabilities and long-distance power transfer networks. The project also reflects how challenging-terrain lines can be integrated into national corridors when supported by detailed planning, terrain-specific engineering methods, and coordinated interstate approvals.
www.tatapower.com
Engineering Requirements in Mountainous Terrain
The project’s main technical challenge involved construction across the Himalayan foothills of New Tehri and Dehradun districts, where tower installations required access at altitudes exceeding 1,816 meters. Conventional transport was not feasible in several segments, leading teams to rely on head-loading and narrow temporary pathways for moving materials. This method is often used in remote terrain when gradients and clearances restrict vehicular access, and it influences construction sequencing and safety planning.
Work in forested and environmentally sensitive zones required strict adherence to clearance protocols, including permissions for around 103 hectares of land. These requirements shaped tower placement, conductor stringing schedules, and equipment movement strategies. More than 500 technicians and skilled workers were deployed to complete the physical execution phase between November 2024 and December 2025, staying within the planned timeline despite seasonal constraints common to high-altitude construction.
Integration Within the NRSS XXXVI Project
The Koteshwar–Rishikesh line is the third major element commissioned under the wider NRSS XXXVI Transmission Ltd. project, which is owned by Resurgent Power Ventures Pvt. Ltd.—a joint venture of ICICI Bank Limited, Tata Power, and international investors. Two earlier segments—the 400 kV LILO Sikar–Neemrana double-circuit line (3.1 circuit km) and the 400 kV LILO Babai–Bhiwani double-circuit line (222 circuit km)—have already been placed in service.
Together, these components contribute to a reinforced northern transmission corridor. The new line connects Uttarakhand to Haryana, Punjab, Uttar Pradesh, Jammu & Kashmir, Himachal Pradesh, Chandigarh, Rajasthan, and Delhi, improving power-sharing flexibility and reducing congestion risks during high-demand periods. By integrating hydropower, which can respond rapidly to load variations, the system gains operational advantages for frequency management and peak-load support.
Transmission Capacity Growth
With this commissioning, Tata Power’s transmission portfolio has reached 7,083 circuit kilometres either operational or under execution across India. For engineers evaluating infrastructure reliability, this expansion demonstrates the company’s focus on grid-scale execution capabilities and long-distance power transfer networks. The project also reflects how challenging-terrain lines can be integrated into national corridors when supported by detailed planning, terrain-specific engineering methods, and coordinated interstate approvals.
www.tatapower.com
