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Upper Modi Hydroelectric Project, 18.2 MW

16 Apr 2025

Upper Modi Hydroelectric Project, 18.2 MW

A cascade run-of-river development using the same catchment area, this project has a gross head of 135.00 m, net head of 126.48 m, and an installed capacity of 18.2 MW, producing 109.217 GWh annually.

Particulars Features
Location Annapurna Rural Municipality, Kaski District, Gandaki Province, Nepal
Type of project Run-of- river
Gross / net head 135 m / 126.48m
Design discharge 16.15 m3/sec
Installed capacity 18.2 MW
Annual Energy 109.217 GWh
Principal civil structures
Interconnection Arrangement 700 m long 3.2 wide, 3.2m high, RCC Box Culvert type
Interconnection Arrangement 700 m long 3.2 wide, 3.2m high, RCC Box Culvert type
Head pond 32m long,10m wide 6.9m high
Headrace Tunnel 4244 m long, Modified Horseshoe-Shaped, 3.5 m internal dia.
Surge Tank 10 m dia., 38.6 m high, Restricted orifice type
Vertical Shaft/Horizontal High- Pressure Pipe 101.67 m long, 2.35 m dia., circular steel-lined /217.30m long, 2.35 dia., D-shaped Tunnel
Adit Tunnels Two Adit Tunnels, with a total length of 198 m
Powerhouse Surface/Semi Surface structure, 33m long, 15.5 m wide, 24 m high
Switchyard Outdoor conventional type, 57m long and 44 m wide
Tailrace 46 m long, comprising a 4 m wide and 2.95 m high box covered Canal.
Turbine Vertical Axis Francis, 2 x 9.113 MW with rated speed 600rpm
Generator 11kV voltage, three-phase AC with 10.71 MVA rated output
Transmission Line 132 kV, 11.5 km single circuit from UMA Powerhouse to New Modi Substation