The final phase of the Tehri Hydro Development Corporation has recently started operating to full capacity with synchronization of its 4th and last 250 MW units. THDC in a statement said that "The Tehri Hydro Development Corporation has achieved the historic milestone of successfully synchronizing its 4th and last unit of 250 MW.''

The first phase of the project was commissioned in October 2005 and three units have been in operation generating 750 MW of electricity so far

THDC plans to contribute 1,844 MW capacity additions in hydel power during the 11th Five Year Plan period of 2007-2012 by commissioning 400 MW Koteshwar, 1000 MW Tehri pumping storage plant and 444 MW Vishnugad Pipalkoti projects.