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Jorethang Loop Hydroelectric project is a 96 megawatts (129,000 hp), run-of-the-river hydroelectric power station on the Rangit river in South Sikkim district of Sikkim state in India.[1] The dam is located near village Piple and power station is located about 13 km downstream near village Majhitar. Dans Energy Private Limited was awarded contract for construction of the project. The project was officially inaugurated on 29 October 2015. The project was built at a cost of Rs 1,182 crores.[2][3][4]

Jorethang Loop Hydroelectric project
Location in Sikkim [Interactive fullscreen map] Jorethang Loop HEP
Official name	Jorethang Loop Hydroelectric project
Location	Sikkim, India
Coordinates	27°9′36″N 88°17′31″E
Opening date	26 September 2015
Construction cost	Rs. 1,182 crore
Owner(s)	Government of India
Operator(s)	Sikkim Renewable Energy Development Agency
Dam and spillways
Type of dam	Concrete Gravity
Impounds	Rangit River
Height	17 metres (56 ft)
Length	108 metres (354 ft)
Spillway capacity	m³/s
Reservoir
Surface area	14.489 hectares (35.80 acres)
Power Station
Commission date	29 October 2015
Type	Run-of-the-river
Turbines	2×48 MW
Installed capacity	96 MW
Annual generation	444.03 GWh

Powerhouse

The dam is located about 5 km upstream from Jorethang and powerhouse is located about 13 km downstream from dam site at 27°06′29″N 88°19′27″E. Water is diverted from barrage through 6.8 km long head race tunnel, through a surge shaft of 25 m dia. and pressure shaft to power house near village Majitar. The powerhouse has 2 x 48.75 MW vertical shaft type Francis turbines that generate 2x48 MW power. The water flow is discharged back into Rangit river through a 40m tall race channel. With installed capacity is of 96 MW project is expected to generate approximately 444.03 GWh per annum.[1][5]

Power transmission

The electricity generated is connected to switchyard near powerhouse and evacuated through double circuit 220 kV transmission line to the New Melli 220KV switching substation. New Melli sub station is located about 10 km away from powerhouse and connected to Eastern Regional Grid.[1][6]

See also

• Rangit Hydroelectric Power Project Stage III – situated upstream

References

External links

• Jorethang Loop HEP

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