Construction of 400 kV substation in Bahrabise progressing rapidly

The construction of a 400 kV substation in Bahrabise Municipality, Sindhupalchok, is advancing at full speed. This twelve-phase substation is being developed to integrate electricity from hydroelectric projects on the Tamakoshi and Sunkoshi rivers and their tributaries into the national transmission system, enhancing the country’s overall power grid.  

The construction of 220/132 kV and 132/11 kV substations at the same location has already been completed, and equipment testing has been finalized. Meanwhile, all equipment for the 400 kV twelve-bay substation, which employs Gas Insulated System (GIS) technology, has been delivered to the site.  

Civil structures to house the power transformers are nearing completion and connection work is underway. The building to accommodate the control room and GIS equipment is still under construction. Equipment connection will commence once the civil structures are finalized. The project has achieved approximately 70 percent overall progress, with completion expected by June.  

Nepal Electricity Authority (NEA) Executive Director Kulman Ghising visited the construction site on Saturday, urging project teams to expedite the remaining work to ensure early completion.  

“Once the 400 KV Bahrabise substation is operational, electricity from hydroelectric projects in the Balefi and Bhotekoshi river corridors can be transmitted to Dhalkebar via the Bahrabise-Khimti 400 kV transmission line and exported to India,” said Ghising. “Prioritize this project and accelerate the work to finish ahead of schedule.”  

Three substations—Khimti, Bahrabise, and Lapsiphedi—are under construction as part of the 400 kV substation project. The Tamakoshi-Kathmandu 220/400 kV transmission line project, which includes a 43 km transmission line from the New Khimti substation in Ramechhap to Bahrabise, is nearing completion.  

Of the 118 towers planned for the Khimti-Bahrabise line, 117 foundations are complete, with 115 towers erected and 36 km of wire stretched. The final tower is under construction, and the Khimti-Bahrabise section is expected to be operational by February.  

Similarly, construction of the 46 km Bahrabise-Lapsiphedi 400 KV double-circuit transmission line is progressing. Out of 122 towers, 118 foundations are complete, 117 towers erected, and 42 km of wire stretched. Work on the remaining towers is ongoing. The Lapsiphedi-Changunarayan 132 KV transmission line has also been extended to enable electricity penetration into Kathmandu Valley. However, local opposition continues to impact progress.  

Upon the completion of the 400 KV transmission line funded by the Millennium Challenge Corporation (MCC), electricity will be able to flow from Lapsiphedi to the new Butwal substation at Bhumhi in Nawalparasi (Bardghat Susta West), significantly boosting Nepal’s transmission capacity.