Survey and Investigation
Niare Hydroelectric Project
Client :M/s Andra Power Pvt. Ltd
Location :Upper Subansiri District, Arunachal Pradesh, India
Status :On Going
Scope of Work :
Niare H.E. Project is located in upper reaches of Subansiri River, Arunachal Pradesh. The average river bed level at the Dam site is about 1200 m and FRL at the dam has been proposed at EL.1280 m. The Project will utilize a gross head of 228 m and design discharge of 407.50Cumecs for generation of 800 MW.
Niare H.E Project envisages of 101.56 m high concrete gravity dam with 2Nos. of 11m diameter diversion tunnels as diversion structure, 2Nos of power intake with trash rack arrangement, 2Nos. of 3.14 km & 3.10 km long 8.50 m diameter Head race tunnel, 2 Nos. of 20.0 m diameter surge shaft & 100m high, 2 Nos. of 486.50 m long 7.25 m diameter steel lined pressure shaft which include penstock of dia. 5.50m on bifurcation. Underground power house housing4 units of 200 MW each. Design Energy is 3647.39 MU in 90 % dependable year.