A 62.50 m. high concrete Dam on Satluj river at Nathpa to divert 486 cumecs of water through four Intakes.
 

An underground De-silting Complex, comprising four chambers, each 525 m. long, 16.31 m. wide and 27.5 m. deep, which is one of the largest underground complex for the generation of hydro - power in the World.
 

A 10.15 dia. and 27.394 km. long Head Race Tunnel, which is one of the longest hydro power tunnels in the World, terminating in a 21.60 m / 10.20 m dia and 301m deep Surge Shaft.
 

Three circular steel lined Pressure Shafts, each of 4.90 m dia and 571 m to 622 m length, each bifurcating into two near the Power House, to feed six generating units.
 

An underground Power House with a cavern size of 222 m x 20 m x 49 m having six Francis Turbine Units of 250 MW each, to utilize a design discharge of 405 cumecs and a design head of 428 m.
 

6 nos. vertical axis Francis turbines Generating Units, each of 250 MW, with the total installed capacity as 1500 MW.
 

A 10.15 m dia and 982 m long Tail Race Tunnel to discharge the water back into the river Satluj.