Arun III HEP

Memorandum of Understanding ( MOU ) was signed between Govt. of Nepal and  Satluj Jal Vidyut Nigam Limited – SJVNL for the execution of 900 MW Arun – III HE Project. Proposed to be located in the Sankhuwasabha Distt. of Nepal which is 657 Km from Kathmandu via Birat Nagar. The Survey license was issued by Govt. of Nepal during July 2008,extended up to 16.01.2012 and is in the process of further extension. TOR clearance for IEE of roads issued by GoN on 20.04.2010.

Letter of intent issued on 23.05.2010 to carry out infrastructure work at Dam & Power House site. Detailed Project Agreement is in the process of examination by GoN before signing. FSR & commercial viability for 900 MW was approved by CEA on 23.02.2010. Final DPR submitted to CEA on 31.03.2011 and under examination for vetting.

Scoping document/ TOR resubmitted to Ministry of Environment, Nepal on 22.09.2011. Survey License issued for 400 KV transmission line on 22.05.2009. DPR for Transmission Line submitted to CEA on 05.04.2011. Survey License for Transmission line extended upto 20.05.2012.

Salient Features
Capacity 900 MW
State/ Country Nepal
Basin Arun
Project Type Run of River
Type of Dam Concrete Gravity Dam
Height of Dam 68 m
FRL 842 m
Nos. of Sliuce Gates 3
Crest Level 849 m
Length/ Dia of DT 466 m/ 11 m
No. of Intakes 4
Desilting Chambers Underground, 4 nos. 420 m (L)x16m(W)x 24m(H)
No. of Adits 4
Length of HRT 11.74 KM
Dia of HRT 9.5 m Circular
Discharge 377 Cumecs
Type of Surge Shaft one, orifice Type
Height of Surge Shaft 110 m
Dia 28 m
Type of Pressure Shaft inclined steel lined
No. of Pressure Shaft(s)/ Penstocks 3
Type of Powerhouse Underground Cavern
No./ Capacity of generating units 6/165 MW
Type of Turbine Francis
Gross Head 303.8 m
Design Head 285.98m
Length/ dia of TRT/ Tail Race Tunnel 143m/10m
Energy in 90  % Dependable Year. 4022.85 MU
Estimated cost 4606.95 Crore