Siuri Khola Small Hydropower Project (5000 KW)

Siuri Khola Small Hydropower Project is located in Bhulbhule VDC of Lamjung district. The project has an installed capacity of 5 MW with a design discharge of 1.4 m3/sec.First feasibility study of Siuri Khola Small Hydropower Project was completed in the year of 2005  The power purchase agreement with an installed capacity of 990 kW with Nepal Electricity Authority was completed based on the same feasibility study of 990kw capacity on 2006. This detail project study is carried out and report is prepared for the upgraded size of the project from 990 kW to 5000 kW for project implementation in the context of  PPA was signed with NEA on the date February  2008  for upgraded capacity. 

Hydrology of the project indicates that the river has discharge of 0.57 m3/sec at Q65 discharge and 1.69 m3/sec at Q40, is enough for fulfilling the requirement of the project.  The engineering geological study conducted in the area indicates that there is no such hazards and risk associated on the project area itself. Most of the alignment passes through barren land. There is requirement of protection and drainage management for the landslide d/s of proposed powerhouse on the left side of Siuri Khola.

The project has two diversion schemes in both rivers i.e. Liuri and Siuri Khola. Water from Liuri khola is collected through collection canal and discharged into Siuri khola at Siuri diversion scheme maintaining the level of diversion weir at 1833.50m. There is side intake provided with intake gates for discharge control. A gravel trap and desanding basin capable of removing particles up to 0.2 mm is recommended

 

Location of Project Site

Bhulbhule VDC

Coordinates

Northing  : 28°20’00”-28°21’08”

Easting   : 84°27’30”-84°29’23”

Catchment Area at Intake

21.1 km2

Design Flow

1.4 m3/s

Length of weir

12.93 m

Number of Units

2

Type of Turbine

Pelton (Impulse)

Shaft Arrangement

Horizontal

Rated Head

452.42 m

Rated Output for each unit

2650 kW

Turbine CL Elevation

EL 1374.57 m

Turbine Efficiency

89 %

Generator Rated  Output for each unit

3150 kVA

Transformer Capacity

3*2100 kVA

Transformer Efficiency

99 %

Transmission Length

8 km

Transmission Voltage

33 kV

Interconnection Point

Switching Station at Nyadi, Lamjung

Installed Capacity

4950kW

Gross Head

458.88 m

Annual Energy Generation

32.10 GWh

Dry Season Energy (four months)

6.68 GWh

Wet Season Energy (eight months)

25.42 GWh

PPA Date (990 kW)

2007 Aug 02 (2064/04/17)

PPA Date (3960 kW)

2009 Jan 19 (2065/10/06)

PCOD Date

2069/08/07

COD  Date

2069/06/30