NHPC declares commercial operation of it’s second unit (unit # 3 of 250 MW) of India’s largest hydropower project- 2000 MW Subansiri lower hydroelectric project

NHPC Limited, a ‘Navratna’ PSU under Ministry of Power, Government of India, achieved two significant milestones during the intervening night of 31st January and 1st February 2026 at its 2000 MW (8×250 MW) Subansiri Lower HE Project in Arunachal Pradesh/Assam, further strengthening India’s energy security, grid stability and clean energy transition.

The first milestone was the synchronization of the 3rd Unit (Unit #1 of 250 MW) with the National Grid, successfully accomplished at 21:00 hours on 31.01.2026. Thereafter, the commercial operation of the second unit (Unit # 3 of 250 MW) was achieved at 00:00 hrs on 01.02.2026, adding another 250 MW of clean hydropower to the National Grid. With this, Subansiri Lower HE Project has contributed 500 MW out of its total 2000 MW capacity, reinforcing hydropower’s role in grid stability, peak power support and integration of renewable energy into the national energy mix.

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Shri Bhupender Gupta, CMD, NHPC expressed gratitude to the Ministry of Power, Government of India and the Governments of Arunachal Pradesh and Assam. He praised the dedicated efforts of the Subansiri Lower Project team, led by Shri Rajendra Prasad, Executive Director and all the officials of various departments of NHPC at Corporate Office who contributed for these milestones. He further added that the successful commissioning of these

units demonstrates NHPC’s technical expertise, execution capability and crucial role in ensuring national energy resilience and the Government of India’s vision of a sustainable and self-reliant power sector. Shri Gupta emphasized that these achievements will support the timely commissioning of the remaining units.

Shri Sanjay Kumar Singh, Director (Projects), NHPC congratulated the entire team of NHPC at Site and Corporate Office which contributed to achievement of these milestones.

Shri Rajendra Prasad, Executive Director, Subansiri Lower H.E. Project thanked NHPC management, corporate teams, executing agencies – M/s GE Vernova, M/s BGS-SGS-SOMA, M/s TREL and M/s PEL as well as local stakeholders and communities for their support.