First Weir Gate Installed and Tested at Upper Trishuli-1 Hydropower Project

Kathmandu. The first weir gate installation and testing at the 216 MW capacity Upper Trishuli-1 Hydropower Project under construction in Rasuwa with direct foreign investment has been successfully completed. 

The testing of this important structure in the hydro-mechanical sector was conducted on Thursday in the presence of Rasuwa's federal MP Mohan Acharya, Energy Ministry Joint Secretary Sagarraj Gautam, and Korean Ambassador to Nepal Park Tae-yong. 

With the completion of one of the three gates that control the river's water flow towards the tunnel and maintain the water level at the dam, it is believed that the project will gain further momentum. This project, being constructed under the leadership of Korean companies, is the largest hydropower project with direct foreign investment. 

Currently, its overall physical progress has reached 82 percent. The excavation of the 9.5 km long main tunnel has been completed, and concrete lining is currently underway, while the installation of electro-mechanical equipment is ongoing. 

Despite some disruptions due to floods in 2024 and 2025, the project is targeted to be fully completed by mid-2027. This project, which will generate 1.53 billion units of electricity annually, has already spent over 236 million rupees under its corporate social responsibility in the affected areas. The generated electricity will be connected to the national transmission system through the Trishuli-3B Hub Substation.