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Andhikhola Upgradation

The present Andhikhola Hydropower Project of 5.1 MW is located in Syangja district. Work is still ongoing to upgrade the project from 5.1 MW to 9.4 MW with some major and minor modifications in the existing plant.

Salient Features

Type	: run-of-the-river (ROR)
Total generating capacity	: 9.4 MW
Total Discharge	: 7.1 cubic meters per sec
Net Head	: 239 meters
Total generation	: 66.23 GWh of energy annually
Construction Period	: 1 year

Technical Modifications

Description	Existing	After Upgrading
Capacity	5.1 MW	9.4 MW
Design Flow	2.7 m3/sec	4.87m3/sec
Net Head	239.2 m	239.6 m
Settling Basin	No. of Bays: 2	No. of Bays: 4
Headrace Tunnel	Length: 1284m long Area: 4.25 m2	Minor repair & maintenance, tunnel surface smoothening, outlet strengthening
Surge Shaft	Surface Area: 12m2	Increase height by 1.5m
Penstock	0.9-1.1 m steel penstock	Additional penstock of same diameter
Powerhouse	Underground 3 Pelton Units (1.7 MW each) 3 Generators (2.2 MVA each)	Underground 3 Pelton Units (3.13 MW each) 3 Generators (5 MVA each)
Tailrace Tunnel	Length: 1087m Area: 4.88 m2	Length: 1087m Area: 5.25 m2
Transmission Line	33 kV Length: 52 km	132 kV Length: 0.5 km Switching Substation

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