THDC India Limited (Formerly Tehri Hydro Development Corporation Limited), is a company jointly owned by Government of India and Government of Uttar Pradesh. It was incorporated in July’88 to develop, operate and maintain the Tehri Hydro Power Complex and other Hydro Projects. THDC India Limited is a Mini Ratna Category-I Enterprise.

At present the company has four power plants in operation namely Tehri Dam (1000 MW), Koteshwar Dam (400 MW), 50 MW Wind project in Patan (Gujarat) and 63 MW Wind project in Dwarka (Gujarat). In addition, more than 10 projects are under various stages of construction. Tehri PSP (1000 MW) and Vishnugad-Pipalkoti HEP (444 MW) are in advance stage and are expected to commission by 2018. THDCIL has also ventured in to thermal power generation with its 1320 MW Thermal Power project coming up near Dussehera village which is near to Khurja, District Bulandshahr, Uttar Pradesh.