Makar Jitumaya Suri Hydropower Ltd. was established and registered in Department of Industries under the Government of Nepal Company Act 2053 on B.S 2071. Makar Jitumaya Suri Hydropower Limited has proposed Suri Khola Hydropower Project and Upper suri khola Hydropower Project (7 MW), which is one of the hydropower projects identified in suri river. The activities of Upper Suri Khola Hydropower Project are being carried out in cooperation with Ministry of Energy (MoE), Nepal through Department of Electricity Development (DoED) and the local community. It has planned to contribute to the national economy through accelerated hydropower development. The details about the company is enlisted in Table 1
Table 1: Details of Company.
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Company |
Makar Jitumaya Suri Hydropower Ltd. |
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Type |
Public Limited Company |
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Address |
United World Trade Center, Tripureshwor, Kathmandu |
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Establishment |
2065/08/17 B.S. |
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Telephone number |
+977-1-4117008 |
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hydro.makarjitumaya.surikhola@gmail.com
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PAN no |
303353313 |
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Registration no. at Office of Company Registrar |
123684/070/071 |
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Department of Industry Registration No |
5009/2075/076 |
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Project under development |
Upper Suri Khola Hydropower Project – 7MW |
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Survey license no. |
Bi.Bi.Bi.071/72 Bi.U.Sa.698 |
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Generation license no |
Bi.Bi.Bi.0776/77 Bi.U 268 |
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Project Location |
27° 43' 00" to 27° 45' 00" North, |
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86° 15' 00" to 86° 17' 30" East |
Upper Suri Khola Hydro Power Project (USKHPP) is a run-of-river type project with weir crest level at 1827 amsl for Hulak Khola, 1824 amsl for Kolung Khola and turbine axis is fixed at elevation at 1405 amsl. The gross head for this project layout is computed as 422m. The water from the intake is diverted to the water conveyance system through the gravel trap, settling basin and head pond. Then water is feed to powerhouse through 2916 m long headrace pipe from Hulak 1156 m long headrace pipe from Kolung and 810 m penstock pipe to hit the turbine. The generated power will be evacuated by 33 kV single circuit transmission line at proposed Singati substation of Dolakha district. The length of 33 kV transmission line will be about 11 km.
The project area is located between 1407m to 1827 m above mean sea level in the reach of suri Khola. Geographically the project area is located between longitudes 86° 17‟ 00”E to 86° 15‟ 10”E and latitudes 27° 44‟30” N to 27° 43‟30” N. Entire project components of project lies in Gaurisankhar Rural Municipality. The project area location map is shown in map below. The powerhouse is linked by 12 km long fair-weather earthen motorable road starting from Singati Bazar.
USKHPP is located in Dolakha district, Bagmati Province of Nepal. The district headquarter is Charikot on the Lamosangu-Charikot highway. The distance from project site to Charikot is about 45 km. There is a regular bus service from Charikot to Gurumphi on the left bank of Tamakoshi River. Gurumphi is at the confluence of Suri Khola and Khare Khola. Powerhouse are of the project is about 3.5 km from Gurumphi. Project access from Kathmandu is shown in Table 2.2.
Project accessibility
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S.N. |
Distance from |
To |
Distance(Km) |
Description Route |
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1 |
Kathmandu (Maitighar) |
Khadichaur |
78 |
Arniko Highway |
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2 |
Khadichour |
Charikot |
55 |
Lamosangu-Jiri Highway |
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3 |
Charikot |
Singati |
35 |
Graveled Road |
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4 |
Singati |
Bhorle |
4.5 |
Graveled Road |
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5 |
Bhorle |
Power house |
7.5 |
Earthen road already built |
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Access road |
From power house to intake |
7 |
Earthen road |
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Total Road Length From Kathmandu to PH |
180 |
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General |
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Development region |
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Central |
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Zone |
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Janakpur |
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District |
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Dolakha |
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District headquarter |
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Charikot |
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VDC |
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Chankhu and Suri |
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Project location |
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Longitude |
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86°15'10" and 86°17'00" East |
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Latitude |
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27°43'30" and 27°44'30" North |
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Type of scheme |
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Run of river (RoR) |
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Source river |
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Hulak Khola and Kolung Khola |
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Hydrology Hulak Khola |
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Catchment area |
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23 km2 |
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Mean annual precipitation |
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1650 mm |
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Design discharge |
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1.678 m3/s (Q40.32%) |
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Compensation flow |
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0.032 m3/s |
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1 in 100 years return period design flood |
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114.063 m3/s |
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1 in 5 years return period operation flood |
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43.99 m3/s |
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Kolung Khola |
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Catchment area |
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3.68 km2 |
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Mean annual precipitation |
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1650 mm |
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Design discharge |
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0.35 m3/s(Q48.8%) |
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Compensation flow |
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0.011 m3/s |
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1 in 100 years return period design flood |
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52.891 m3/s |
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1 in 5 years return period operation flood |
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14.585 m3/s |
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1 in 2 years return period diversion flood |
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7.022 m3/s |
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Project components Hulak Khola |
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Weir |
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Type |
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Concrete lined weir |
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Crest level |
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1827 m amsl |
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Length of weir |
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25 m including undersluice |
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Spillway type |
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Free overflow |
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Intake |
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Type |
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Gated submerged orifice intake with course trash rack |
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Nos. of opening |
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2 nos |
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Opening size |
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2.0m long X1.0 m |
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Gravel trap |
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Type |
Continuous flushing hopper type |
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Overall length |
11.118 m |
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Width |
2.80 m |
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Overall depth |
2.60 m |
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Particle size to be trapped |
5 mm |
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Design flow |
2.18 m3/s |
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Flushing flow |
0.35 m3/s |
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Settling basin |
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Type |
Double chamber, gravity flushing type |
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Settling zone length |
36.00 m |
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Inlet transition length |
13.80 m |
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Single basin width |
3.00 m |
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Overall depth |
2.5 m |
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Particle size to be settled 0.15 mm with 90% settling efficiency
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Design flow |
1.93 m3/s |
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Approach canal |
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Type |
Box type |
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Length |
107.75 m |
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Width |
1.50 m |
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Overall depth |
1.05 m |
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L-slope |
1:250 |
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Overflow spillway length |
7.84 m |
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Overflow spillway capacity |
10 m3/s |
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Headrace Pipe Hulak |
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Type |
Mild Steel Pipe |
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Length |
2916 m |
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Diameter |
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1.20 m |
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L-slope |
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1:750 |
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Kolung Khola |
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Weir |
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Type |
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Boulder lined weir |
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Crest level |
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1824 m amsl |
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Length of weir |
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6.5 m including undersluice |
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Spillway type |
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Free overflow |
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Intake |
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Type |
Gated submerged orifice intake with course trash rack |
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Nos. of opening |
2 nos |
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Opening size |
0.90 m long X0.50 m |
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Approach canal |
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Type |
Box type |
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Length |
125.624 m |
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Width |
0.9 m |
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Overall depth |
0.75 m |
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L-slope |
1:250 |
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Overflow spillway length |
Not provided |
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Overflow spillway capacity |
- |
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Gravel trap |
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Type |
Continuous flushing hopper type |
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Overall length |
6.225 m |
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Width |
1.6 m |
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verall depth |
1.74 m |
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Particle size to be trapped |
5 mm |
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Design flow |
0.45 m3/s |
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Flushing flow |
0.10 m3/s |
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Settling basin |
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Type |
Double chamber, gravity flushing type |
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Settling zone length |
16 m |
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Inlet transition length |
9.489 m |
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Single basin width |
2.00 m |
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Overall depth 2.332 m
Particle size to be settled 0.15 mm with 90% settling efficiency
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Design flow |
0.40 m3/s |
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Headrace Pipe Kolung |
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Type |
Mild Steel Pipe |
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Length |
1156 m |
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Diameter |
0.8 m |
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L-slope |
1:750 |
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Surge Tank |
|
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Type |
RCC Circular tank |
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Storage period |
60 s |
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Effective height |
20 m |
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Diameter |
5.50 m |
Maximum Upsurge Level 1821.39
Minimum Downsurge level 1805.42
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Normal water level |
1819 m amsl |
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Penstock |
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Type |
Surface, mild steel circular shaped |
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Length |
810 m |
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Internal diameter |
1.00 m |
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Thickness |
6-26 mm |
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Design flow |
2.028 m3/s |
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No. of anchor blocks |
14 |
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No. of support piers |
135 |
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Powerhouse |
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Type |
Surface type, RCC structure |
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Length Width |
27.82 m 16.24 m |
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Height |
12.00 m |
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Tailrace length |
6.00m |
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Turbine |
|
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Type |
Pelton (2 units) |
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Rated capacity |
3500 kW one unit |
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Turbine axis level |
1405 m amsl |
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Design flow |
1.014 m3/s for one unit |
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Generator |
|
|
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Type |
|
3 Phase brushless synchronous (2 units) |
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Rated capacity |
|
4000 kVA each |
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Rating |
|
50 Hz, 750 rpm |
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Governor |
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Electro-Hydraulic |
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Overhead crane |
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Lifting capacity 25 T |
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Step up transformer |
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Type |
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3-Phase, ONAN cooled, Outdoor type |
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Rating |
|
2 x 4000 kVA, 6.3/33kV, 50 Hz |
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Transmission line |
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33 kV Double circuit, 3 phase, 50 Hz, 4 km long to SKHP Powerhouse |
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Connection with grid |
|
Singati sub-station |
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Access road |
|
Earthen road, 7 km long |
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Cost and finance |
|
|
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Project cost (with IDC, ) |
|
1200.10 Mill NRs |
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Cost per kW (with IDC) |
|
1572.88 US$/kW |
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Debt equity ratio |
|
70/30 |
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Interest rate |
|
10% |
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Construction period |
|
2 years |
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FIRR |
|
17.79% |
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NPV |
|
795.21 Mill NRs |
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BC ratio |
|
1.71 |
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Return on equity |
|
28.14% |
