Piluwakhola small hydropower project, located in Sankhuwasava district of Koshi Zone, is a run-of-river type project. The project has its installed capacity of 3,000 kilowatt power from the water of the Piluwakhola River. The power generated from this project is connected to the national grid system via Tirtire-Dhankuta-Dharan 33 kV transmission line.
The project site is located in Chainpur VDC of Sankhuwasava district. It is 37 kilometer away from Basantapur and 73 kilometer from Dhankuta Hile bazaar.
The design discharges for the power generation 4.0 m3/sec. The project runs in its full capacity for about 8 months. Power generation is lower in the dry months. The plant factor of this project is 76.24 percent.
The elevation of the intake and powerhouse is located in 652.025m and 537.5m respectively from mean sea level. The gross head of the project is 113m. Surface penstock is the alignment of the project which is around 3.5 km long.
The discharge from the desanding basin passes to the powerhouse through a 3.311 km long penstock pipe. Two horizontal shaft Turgo Impulse type turbine set of 1700 kilowatt capacity each is installed in the powerhouse. The powerhouse remains closed for about 10 percent of its time for cleaning, maintenance and break down of transmission line etc. The gross energy generation from this project is 20.035 Gwh per annum.
The total cost of the project is Rs. 345 millions. Turgo impulse turbines imported from Germany are installed in the project. The erection and commissioning work of the project will be done by the manufacturing company to ensure the successful erection and commissioning and efficiency of the project.
For the economic analysis purpose the life of this project is considered to be 40 years.