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Nand Pyayag Langasu
Nand Prayag Langashu Hydroelectric Project
Nand Prayag Langasu Hydroelectric project located on the New Delhi – Badarinath National Highway No. 58 almost midway between Karanprayag and nandprayag in Chamoli district of Uttarnachal State, envisages utilization of the water of river Alaknanda for power generation on a run of the river scheme harnessing a gross head of about 80 m. The project with a proposed installation of 100 MW (4 x 25 MW) is envisaged to generate an annual energy generation of 490.45 MU in a 90% dependable year  

Photo: Barrage Site

Salient Features :

· Location - Chamoli, Uttarakhand

· River – Alaknanda

· Capacity - 100 MW

· Barrage -185 m long across river Alaknanda

· Head Race Tunnel - 4.8 km long and 9.00 m diameter

· Surge shaft - 18 m diameter underground with 44 m open air expansion chamber

· Pressure shaft -2 Nos.,5.1 m dia with birfurcation of 4 Nos. 3.6 m dia.

· Generator

- 4 units of 25 MW each

· Vertical Francis Turbine - 4 Nos.

· Net head - 45.4 m

· Annual Generation - 490.45 MU

· Project Cost - Rs. 1140 crore on August 2010 PL

· Year of Commissioning/Completion Schedule – Dec 2022

 

Photo: Power House Site

 
 
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