NTPC has achieved a significant milestone with the successful commissioning of Unit III at its Tehri Pumped Storage Project (PSP). The newly operational unit adds 250 MW of capacity to the company's renewable energy portfolio, marking an important development in India's power generation infrastructure.

Project Details

The commissioning details for the Tehri PSP Unit III are outlined below:

Strategic Significance

The Tehri Pumped Storage Project represents a critical component of NTPC's renewable energy strategy. Pumped storage projects serve dual purposes in the power sector - they function as both energy storage systems and grid stabilization mechanisms. These facilities store excess energy during low demand periods and release it during peak consumption hours.

Technology and Infrastructure

Pumped storage projects like Tehri PSP utilize advanced hydroelectric technology to provide flexible power generation solutions. The 250 MW Unit III adds substantial capacity to the existing infrastructure, enhancing the project's overall contribution to grid reliability and energy security.

The successful commissioning of Unit III demonstrates NTPC's continued commitment to expanding its renewable energy footprint and supporting India's clean energy transition goals.

NTPC Limited's subsidiary THDC India Limited has announced the commercial operation declaration of Unit III (250MW) of the Tehri Pumped Storage Project (4X250MW), effective from 00:00 hours on December 12, 2025. The announcement was made through regulatory filings to stock exchanges on December 11, 2025.

Commercial Operation Details

The commercial operation declaration follows successful commissioning and due approvals for the 250MW unit. THDC India Limited made the disclosure under Regulation 51(1) read with Part B of Schedule III of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015.

Capacity Enhancement Impact

With the addition of this 250MW unit, THDC India Limited's total installed and commercial capacity has increased to 3,657MW. This represents a significant expansion of the company's operational portfolio and strengthens its position in the power generation sector.

NTPC Group Milestone

The commercial operation of THDC's Unit III contributes to NTPC Group's overall capacity expansion, bringing the group's total installed and commercial capacity to 85,181MW. This milestone reflects the continued growth trajectory of NTPC and its subsidiaries in India's power sector.

About Tehri Pumped Storage Project

The Tehri Pumped Storage Project is designed with a total capacity of 4X250MW, making it a significant infrastructure project in India's renewable energy landscape. Pumped storage projects play a crucial role in grid stability and energy storage, particularly in supporting renewable energy integration.

Regulatory Compliance

THDC India Limited, classified as a Schedule-A Mini Ratna Category-I PSU and subsidiary of NTPC Limited, has fulfilled all regulatory disclosure requirements. The company secretary and compliance officer have ensured proper notification to both BSE Limited and National Stock Exchange of India Limited regarding this commercial operation declaration.