THDC India Ltd., a subsidiary of NTPC Ltd., has commissioned Unit-3 (250 MW) of its 1 GW (4×250 MW) variable-speed pumped storage hydropower project in Uttarakhand.
The project comprises four units of 250 MW each and is designed to provide 1 GW of peaking power, strengthening grid reliability across northern India.
The reservoirs created by Tehri Dam and Koteshwar Dam on the river Bhagirathi serve as upstream and downstream reservoirs for the pumped storage plant.
The project is being executed by Alstom, in consortium with Hindustan Construction Co. (HCC). Alstom’s scope includes supply of four 250 MW variable speed turbine and generator units and other equipment including main inlet valves and control and protection systems.
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