Project Area
Malika Rural Municipality, Myagdi District, Gandaki Province. The headworks stand 3 km upstream of Darbang Bazaar on the left bank of the Myagdi Khola; the powerhouse lies 2.5 km downstream on the right bank.
Dam
A 37 m long concrete gravity weir across the Myagdi Khola, with two under-sluices (3 m wide) fitted with hydraulic gates to flush sediment past the intake.
Intakes
Four side intakes, each 3.8 m wide, draw water from the weir into the waterway system.
Settling Basin
Two double-chambered settling basins, 115 m long, settle out sediment before the water enters the headrace tunnel.
Headrace Tunnel
A 3,030 m headrace tunnel, 4.6 m in diameter and inverted D shaped, carrying the design discharge of 31.4 m³/s toward the shafts.
Surge & Drop Shafts
A vertical surge shaft 38 m high (10 m diameter) to absorb pressure transients, and a vertical drop shaft 55 m deep (4.6 m diameter).
Penstock Pipe
A 1,250 m penstock pipe, 4.0 m in diameter, delivering water from the shafts to the turbines under a gross head of 104 m.
Powerhouse
A 30 m by 50 m powerhouse on the right bank of the Myagdi Khola, 2.5 km downstream of Darbang Bazaar, housing all generating equipment for the project's 25 MW.
Transmission Line
A 132 kV transmission line roughly 7.5 km long evacuates the generated power to the national grid at the Nepal Electricity Authority's Dandakhet substation.
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Headworks & Intake Weir
37 m Concrete Weir // Gated Intake // Desanding BasinLocated on the left bank of the Myagdi Khola ~3 km upstream of Darbang Bazaar. A 37 m concrete gravity weir with gated under-sluices, side intake, and twin desanding basins removes sediment before water enters the conveyance waterway.
Headrace Tunnel
3,030 m Length // Inverted D-Shape // Rock SupportA 3,030-metre low-pressure inverted D-shaped headrace tunnel bored through stable Himalayan metamorphic rock formations, safely conveying continuous river discharge under the mountain massif.
Surge Shaft & Penstock
Vertical Surge Shaft // High-Pressure Steel PenstockAn underground vertical surge shaft absorbs sudden hydraulic transient shockwaves, transitioning seamlessly into high-pressure steel penstock piping dropping sharply to the turbines.
Powerhouse & Generation
25 MW Installed Capacity // 150 GWh Annual EnergyA surface powerhouse housing high-efficiency generating units and a tailrace discharge channel returning water to the Myagdi Khola, generating 150 GWh of clean base and peak electricity annually.
Switchyard & 132 kV Grid
132 kV Outdoor Yard // 7.5 km Transmission LineAn outdoor 132 kV step-up switchyard and 7.5 km transmission corridor delivering generated electricity directly to the Nepal Electricity Authority (NEA) Dandakhet Substation.
Located on the left bank of the Myagdi Khola ~3 km upstream of Darbang Bazaar. A 37 m concrete gravity weir with gated under-sluices, side intake, and twin desanding basins removes sediment before water enters the conveyance waterway.
DoED Licensed
The Darbang Myagdi Hydro-Electric Project is licensed by the Department of Electricity Development, Nepal's national authority for hydropower development.
NEA Power Purchase
The project sells its energy to the Nepal Electricity Authority, evacuated at 132 kV over 7.5 km to the Dandakhet substation, tying Darbang into the national grid.
Sanima Hydro Agreement
A development agreement between Sanima Hydro and Dhaulagiri Kalika Hydro Ltd, signed in December 2019, anchored the project's path to construction.
