THDCIL was constituted with the sole objective to develop, operate & maintain the 2400 MW Tehri Hydro Power Complex and other Hydro projects. The 2400 MW Tehri Hydro Power Complex comprises of (1) Tehri Dam & HPP (1000 MW), (2) Koteshwar HEP (400 MW) (3) Tehri PSP (1000 MW).