Project: Demwe Lower, Arunachal Pradesh (In Progress)

Capacity

5 x 342 MW + 1 x 40 MW

Design

Complete Planning, Design & Engineering

Contract Value

INR 4507.38 Crores (US$ 694.14 Millions)  (1 US$=INR 65)

Project Status

Work in progress

Civil Works

Diversion Tunnels

14.0m, Horse-shoe shaped, 5 Nos. Each of 1 km long

Diversion Tunnels

6.0m, Horse-shoe shaped, 1 No.

Power Intake

5 Nos. rectangular fore bay type

(125m long and 37.70m high)

Underground Pressure Shaft

10m diameter, 5 Nos.

(Average length 602m)

Tailrace Tunnel

13.0m, Horse-shoe shaped, 4 Nos.

Surface Power House

200.57m (L)x28m (W) x 50m (H)

Infra Works

Roads

19 Km

Residential Buildings

27533 Sq.m.

Office Buildings

4000 Sq.m.

Non-residential buildings

33950 Sq.m.

EM Works

Design, manufacture, supply, transportation, storage, erection, testing and commissioning of electro-mechanical plant and machinery (5 nos. Of 342MW & 1 no of 40MW Francis Type Turbines), main power transformers, switchyard and power grid interconnection facilities.

HM Works

Design, manufacture, supply, transportation, storage, erection, testing and commissioning of electro-mechanical plant and machinery (For each 14m dia. diversion tunnels 2 fixed wheel gates of size 5.85m x 14m at inlet, for 6m dia. diversion tunnel 1 fixed wheel gate of size 6m x 6m, 12 Nos. of spillway radial gates for each of sluice spillway bays of 8.6m x 11m, 1 No. of spillway radial gate for the surface spillway bay of 12.5m x 18m)