This project involved a new 66 kV single circuit overhead transmission line from Basochu Hydropower Station to the existing 66 kV substation at Lobeysa, along with addition of a bay at the Lobeysa substation for termination of the new line. The line was required initially for construction power supply and later for evacuation of power following commissioning of the hydropower station.

The existing Lobeysa substation received supply as a radial feeder through a single 66 kV line and stepped down voltage to 11 kV for local distribution. Special technical features included a stepped switchyard with uniform bus level achieved by varying structure heights, and tower foundations in difficult Himalayan terrain with boulders and voids. The work commenced in February 1995 and the substation was commissioned in February 1998.

TCE's Scope