THDC India Limited, a subsidiary of NTPC Limited, has announced the commercial operation of Unit II (250 MW) of its Tehri Pumped Storage Project (PSP) (4×250 MW) in Uttarakhand.
In a regulatory filing dated July 8, 2025, the company informed that following successful commissioning and receipt of all due approvals, the unit will begin commercial operations from 00:00 hours on July 10, 2025.
Key highlights:
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Project: Tehri PSP (Pumped Storage Project), Uttarakhand
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Unit: II
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Capacity: 250 MW
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Total project capacity: 4×250 MW = 1,000 MW
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THDC’s total installed & commercial capacity after this COD: 2,747 MW
The Tehri PSP is designed to augment grid stability and provide peak power by utilizing surplus off-peak energy to pump water from a lower reservoir to an upper reservoir.
With this milestone, two of the four planned units at Tehri PSP have now achieved commercial operations.
The disclosure was signed by Rashmi Sharma, Company Secretary & Compliance Officer of THDC India Limited, and submitted to both BSE Limited and National Stock Exchange of India Limited.
