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THDC India Ltd (THDCIL) Commissions Second Unit of Tehri PSP, Boosts Total Capacity to 2,747 MW

THDC Powers Ahead: New Unit at Tehri PSP Supports Renewable Integration
Indian Masterminds Stories

New Delhi: In a major milestone for India’s hydroelectric power sector, THDC India Limited (THDCIL), a prominent public sector power utility and a subsidiary of NTPC Limited, has successfully commissioned Unit-II (250 MW) of the Tehri Pumped Storage Plant (PSP). This development brings THDC’s total installed and commercial capacity to 2,747 MW, reinforcing its position as a key contributor to India’s clean energy transition.

Unit-II of Tehri PSP Now Commercially Operational

According to an official filing made by the company on July 8, Unit-II has achieved full readiness and has been declared commercially operational from 00:00 hours on July 10, 2025, following all required approvals and testing protocols.

The Tehri PSP is a 4×250 MW project designed to deliver flexible, peak-hour electricity, providing essential grid support and enabling the integration of intermittent renewable sources such as solar and wind.

Read Also: India’s Clean Energy Milestone: THDCIL Advances India’s Largest Variable Speed Pumped Storage Project with Second Unit COD Process

Strategic Role in Grid Stability and Energy Transition

The Tehri Pumped Storage Plant plays a critical balancing role in India’s power ecosystem, offering fast-response load management during peak demand and surplus power absorption during off-peak hours. By facilitating greater renewable energy penetration, the PSP supports the national goal of building a more resilient and sustainable power grid.

Officials from THDC stated that the commissioning of Unit-II further enhances their capability to contribute to grid stability and energy security—especially at a time when India is targeting 500 GW of non-fossil capacity by 2030.

Project Overview

  • Project: Tehri Pumped Storage Plant (Tehri PSP)
  • Installed Capacity: 4 units of 250 MW each
  • Location: Tehri, Uttarakhand

Purpose: Peak load management, renewable energy integration, grid balancing

The plant utilizes off-peak surplus energy to pump water from the lower reservoir to the upper reservoir, which can then be released during peak demand periods to generate electricity—making it a crucial part of India’s energy storage infrastructure.

THDC’s Growing Renewable Portfolio

With this addition, THDC India Ltd. continues to strengthen its position in India’s renewable and hydroelectric sector, in line with the broader decarbonization goals set by the Government of India. As a subsidiary of NTPC, India’s largest energy conglomerate, THDC is also contributing to a range of hydropower, solar, and storage projects nationwide.

Read Also: Energy Innovation Boost: THDCIL Signs Landmark Agreement with Gujarat for 184 MW from Tehri Pumped Storage Plant

About THDCIL

THDCIL is a leading power sector Public Sector Enterprise (PSE) and a consistently profitable company. It was established in July 1988 as a public limited company under the Companies Act, 1956, to develop, operate, and maintain the Tehri Hydro Power Complex. THDCIL is now a subsidiary of NTPC Limited, with NTPC holding a 74.496% stake and the Government of Uttar Pradesh holding the remaining 25.504%, according to THDCIL’s website.


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