Jorethang Loop Hydroelectric project
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
| |||
| 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
- "Monitoring report - Jorethang Loop Hydroelectric Project, India". Clean Development Mechanism. Retrieved 15 January 2019.
- "Jorethang Loop Hydro-Electric Power (Sikkim) Project". Retrieved 15 January 2019.
- "96 Mw Jorethang Loop project commissioned". NE live. 30 October 2019. Retrieved 15 January 2019.
- "Sikkim's second private HEP launched". United News of India (UNI). 24 September 2015. Retrieved 15 January 2019.
- "Jorethang Loop Hydroelectric Project, India". United Nations Carbon offset platform. Retrieved 15 January 2019.
- "Power Transmission system from Sikkim" (PDF). Ministry of Environment, Forest and Climate Change - Government of India. Retrieved 15 January 2019.