LOWER BARUN KHOLA HYDROELECTRIC PROJECT
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GENERAL
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Name of Project Type of the Scheme Gross Head Catchment Area KM2 Net head Annual average flow Design Discharge Installed Capacity
Lower Barun Khola Hydroelectric Project Run of River 853 m 449.3 (intake) 835.853 (@ Q= 18.44 m3/s) 24.367 m3/s 18.44 m3/s 132 MW
PROJECT LOCATION 1 2 3
Latitude Longitude Project Area
27041’29’ N to 27043’19’ N 87018’10” E to 87022’05” E Bhot Khola Rural Muncipality, Sankhuwasabha, Province 1
TECHNICAL INFORMATION 1
Headworks and Intake Structure Weir Location Type Crest Length River Bed level at Weir Location Weir crest Level Stilling basin type, length & level
Saldim-Barun Confluence Boulder in-filled concrete, overflow type 20 m 1995.044 m 2000.535 m Type IV, 16 m, 1994.406 m
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Intake Type Outer Upper Orifice nr & size (WxH) Outer Lower Orifice nr & size (WxH) Inner trashrack nr, size (HxW) & bars Inner Orifice nr & size (WxH) Invert Level Undersluice Sluice Flushing gate Gravel Trap Type Settling Criteria Number of Basin Number of Sub-Basins Gravel Trap Size incld freeboard of 0.5 m Spillway Length (m) & hot Size of Flushing Canal Settling Basin Type Settling Criteria Number of Basins Number of Basins Inlet Transition Length Settling Basins Size Bed Slopes Spillway Length & overtopping height Size of Flushing canal Orifice Slot nr x basin, dimensions & invert level Trashrack nr, size (WXH) & bars @ Orifice Trashrack nr, size (WXH) & bars @ forebay
orifice-sluice-trashrack-orifice intake 4 nr, 3.6 m x 1.75 m (WxD) 6 nr, 3.6 m x 1.75 m (WxD) 4 nr, 3.6 m x 2.8 m (WxH) 20 mm x 50 mm (txb) 4 nr, 2.70 m x 1.75 m (WxD) 1997.544 1:50 slope, Qf (m3/s)= 151.653 2 nr, 3 m x 3 m (WxH) Surface 90%>=2mm @ flushing interval of 6 hr 2 1 13 m x 9.5 m x 5.66 m (LxWxD) 10.294 m, 0.5 m for Q: 50% of 27.66 m3/s 1 m x 1 m (WxH) @ 1:25 Conventional 90% >=0.15mm @ flushing interval of 8hr 2 2 19.500 m 120 m x 15 m x 5.932 m (L x W x D) 1:120 24, 0.717 for Q: 66.67% of 27.66 m3/s 1 m x 1 m @ 1:25 4 x 2, 2.5 m x 1.5 m (W x D) & 1997.5 m 4nr, 5 m X 2.31 m (W x D) 20 mm X 20 mm (t x b) 10 m X 5.13 m (W x D) 10 mm X 20 mm (t x b)
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Box Culvert Gravel Trap to Settling Basin Length Height Width Water level at the outlet Headrace Tunnel Shape Type & % of lining Total Length Dimensions Surge Shaft Type Diameter (m) Height (m Undamped Upsurge (m) Undamped Down surge Water level in upsurge (masl) Water level in down surge (masl) Crown level of surge shaft (masl) Invert level of surge shaft (masl) Orifice Connecting pipe Tunnel invert level @ surge shaft (masl) Penstock Type Material Length (m) Diameters (m) Thicknesses (mm) Powerhouse Location Type Dimension Access Tunnel Tailrace Tunnel Normal Water Level (m) Type Size (B) Size (D) Length m
CHARACTERISTICS 1 number 85 m 1.250 m 2.250 m 1998.163 m Modified horseshoe shaped Concrete; 100% 4527 m (Excluding Adits) 3.5 m x 3.5 m (W x D) Circular Steel, non-spilling, restricted orifice 10.000 27.980 14.418 14.418 2008.414 Water level in downsurge (masl) 2011.000 1975.315 2m high, 3.5m diameter 5m high, 3.5m diameter 1971.815 Inclined Shaft High Yield Fe 540 1348.000 2.6, 2.4, 2.2, 2, 1.414 16 mm - 60 mm Bhot Khola Rural Municipality Underground 80.0m x12.00m x 14.00m (L x W x D) 770m, 4.2m x 4.2m (W x D) 1144.401 Inverted D-Shaped Tunnel 4.6 4.6 505.750
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Turbine Type Axis of Rotation Number of Units Axis level Generator Number of Units Power Factor Speed (rpm) Efficiency Transformer Number of Units Type Efficiency Rating Transmission Line Transmission Voltage (kV): Cal =175.614 KV Length (km) Number of Circuit Connection Point Power and Energy Installed Capacity (MW) Dry Outage including transmission losses Wet Outage including transmission losses Used Months Energy Estimates based on Daily Average Flows Dry Season Saleable Energy (GWh) Wet Season Saleable Energy (GWh) Total Annual Saleable Energy (GWh) Overall Efficiency (incl. transformer Financial Indicators Project Life (years) Construction Period (years) Construction Year Used Currency Project Cost w/o financing
Pelton Vertical 6.000 1145.435 6 0.850 600 97.00% 3-Phase 6 3-Phase, ONAN Cooled 99.00% 26.6(27.7) MVA, 11kV/220kV 220 20 2 Sitalpati Substation 132 4.00% 4.00% English Q release of 10% 232.886 (~30.78%) 523.65 (~69.22%) 756.532 86.43%
30 5 2020 RS NRs 20128.729 million
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Project Cost w/ financing w/o WC Equity to Capitalized Loan Ratio Interest Rate on Loan Payback Period (years) Min. Debt Service Coverage Ratio (DSCR) Internal Rate of Return (IRR) Financial Internal Rate of Return (FIRR) Net present Value at 12% Discount Rate Dry Tariff (Rs/kW) Wet Tariff (Rs/kW) Benefit Cost Ratio Cost Per MW
CHARACTERISTICS NRs 26125.077 million 30:70 12.00% 12 1.472 15.23% 17.29% NRs. 5349.011 million 8.400 4.800 1.199 NRs 197.917 million
CURRENT STATUS OF THE PROJECT n Survey
License: acquired for 132MW n Feasibility level of study and design: completed n Topographical Survey completed n Hydrological calculation: completed, continuing n Sediment sampling and lab tests: completed, continuing n Geological investigation, mapping and study: completed n ERT: completed n Sub surface investigation: Drilling on going at site ( completed) n Project layout and hydraulic calculations: completed n EIA Study: Report submitted to DoED n Preconstruction activities: Land , access road and others n PPA : On going n Financial Closure: On going
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DEVELOPMENT MODALITY 1 2 3 4
Development modality Role of Foreign Partner Role of Local Developer Development Period (Tentative) a. Pre-Construction Period b. Financial Closure c. Construction Period d. Concession Period
Foreign investment expected. To be decided during negiotation To be decided during negiotation Oct 2020 – Dec 2021 Jun 2020 Jul 2021- Dec 2024 Dec 2024
INDICATIVE FINANCIALS 1 2 3 4
Total Project Cost (excluding IDC & FC) Internal Rate of Return Return on equity Construction time(incld. infrastructure works)
NRs 26125.077 million 15.23% 17.29% 5 years
CONTACT DETAILS DHRUBA KUMAR UPRETI PROJECT COORDINATOR, AMPIK ENERGY PVT. LTD. Tel. 977-4427027 Mobile. 9851036776 Email. dhrubakumar_upreti@yahoo.com