The Penstock-I is located in the excavated section of trapezoidal shaped open trench, having a bottom width of 32.7 m. The penstock has a diameter of 6m which reduces to 5.5m. The pipe is embedded in 6 concrete anchor blocks located at each slope change and is supported by saddles spaced at regular intervals of around 24m.

The Penstock–II is approximately 1, 300 m long, composed of two sections: above-ground and underground. The former section is laid on an open trench and the underground portion, which passes beneath the National Highway, has a bifurcation at the end that feeds two pump-turbine units.  The lay-out and dimensions of the Stage-II Penstock are the same those of Stage I.