Darbang Myagdi Hydro-Electric Project
25 MW Run-of-River Hydroelectric Infrastructure on Myagdi River.
Project Overview & Specifications
The Darbang Myagdi Hydro-Electric Project (DMHEP) is a 25 MW run-of-river facility developed by Dhaulagiri Kalika Hydro Ltd. in Malika Rural Municipality, Myagdi District, Gandaki Province. Feeding directly into the national grid via the Dandakhet Substation, it generates an estimated 150.08 GWh of clean energy annually.
The Darbang Myagdi Hydro-Electric Project (DMHEP) represents a vital clean energy development in western Nepal by Dhaulagiri Kalika Hydro Ltd.
The project harnesses the perennial, snow-fed flow of the Myagdi River, originating from the Dhaulagiri, Churen, and Gurja Himal ranges. The water conveyance system begins with a 37 m high concrete gravity weir, incorporating twin under-sluices and four side intakes, followed by two 115 m long settling basins designed for effective sediment management.
From the settling basins, water is conveyed through a 3,030 m long inverted D-shaped headrace tunnel with a 4.6 m diameter. The system further comprises a 38 m vertical surge shaft, a 55 m drop shaft, and a 1,250 m long penstock pipe with a 4.0 m diameter. These components deliver water to the 30 m × 50 m surface powerhouse, where electricity is generated.
The power generated by the project will be evacuated to the national grid through a 132 kV transmission line connected to the Nepal Electricity Authority (NEA) 132/33 kV Dandakhet Substation, located approximately 7.5 km upstream. The integrated design efficiently links the river diversion, water conveyance, power generation, and grid evacuation systems into a single hydropower scheme.
Geomorphic Parameters
Technical Narrative Tracks
(+)Civil & Underground Waterway Works
Construction of a 37 m concrete gravity diversion weir with 2 under-sluices (3 m width) and hydraulic gates, 4 side intakes (3.8 m width), two 115 m double-chamber settling basins, and excavation of a 3,030 m inverted D-shaped headrace tunnel (Ø4.6 m) along with a 38 m vertical surge shaft and 55 m vertical drop shaft.
(+)Hydromechanical & Penstock Pipeline
Fabrication and erection of a 1,250 m long steel penstock pipe (Ø4.0 m), intake hydraulic control gates, settling basin de-silting systems, and high-pressure stoplog mechanisms.
(+)Powerhouse & Grid Interconnection
Construction of a 30 m x 50 m surface powerhouse 2.5 km downstream of Darbang Bazaar, along with a 7.5 km 132 kV evacuation transmission line connecting directly to the NEA 132/33 kV Dandakhet Substation.
Field Photographs & Documentation
