Tehri PSP Unit IV Boosts NTPC Group Capacity to 89 GW

THDC India Limited, a subsidiary of NTPC Limited, has commissioned Unit IV of its 250 MW Tehri Pump Storage Project (PSP), marking a significant expansion. The unit commenced commercial operations on April 12, 2026. This addition brings THDC India Limited's total installed capacity to 3,907 MW.

NTPC Group Capacity Milestone

With the addition of the Tehri PSP Unit IV, the NTPC group's overall installed capacity has now surged to 89,378 MW. The group's total commercial capacity stands at 88,298 MW as of April 12, 2026. This expansion reinforces NTPC's position as India's largest power producer.

Importance of Pumped Storage for Grid Stability

Pumped storage projects like Tehri PSP are vital for grid stability, especially as India integrates more variable renewable energy sources such as solar and wind. These facilities help by storing surplus power and releasing it when demand peaks.

About NTPC and THDC

NTPC Limited is India's leading public sector power generator, managing a diverse portfolio including thermal, renewable, and hydro power plants. THDC India Limited, in which NTPC holds a 75% stake, plays a key role in developing major projects such as the Tehri Hydroelectric Complex, which includes this significant pump storage component for grid support.

Risk Assessment

The commissioning announcement did not highlight specific risks associated with this new unit. NTPC typically manages the execution risks of its large-scale projects through established internal processes.

Comparison with Peers

NTPC's total installed capacity of 89.4 GW significantly outpaces its major competitors. For context, Tata Power's diversified capacity exceeds 14 GW, and Adani Power's installed capacity is around 15 GW, primarily from thermal generation.

Key Capacity Figures

• NTPC Group Total Installed Capacity: 89,378 MW (as of April 12, 2026)
• THDC India Limited Total Capacity: 3,907 MW (as of April 12, 2026)

What to Watch

Investors and analysts will be watching for future capacity addition announcements from NTPC across its thermal and renewable energy sectors. Key performance metrics and operational efficiency of the new Tehri PSP Unit IV will also be monitored, alongside NTPC's progress toward its renewable energy targets and any further expansion plans for THDC India Limited. The integration of this new pumped storage capacity with the national grid will continue to be a focus.