NHPC to begin commercial operation of 2nd unit of Subansiri hydro project on Dec 23

NHPC begins commercial operation of the second unit of the Subansiri Lower Hydroelectric Project. This 250 MW unit is part of India's largest hydroelectric project. The project is being constructed at a cost of approximately Rs 27,000 crore. This ...

By PTI | Dec 21, 2025, 01.00 PM IST

New Delhi: State-owned NHPC will on Tuesday begin commercial operation of second unit of the 2,000 megawatt (MW) Subansiri Lower Hydroelectric Project, being constructed at a cost of around Rs 27,000 crore.

NHPC, under Ministry of Power, is constructing the hydroelectric project (8 X 250 MW) near North Lakhimpur on the border of Arunachal Pradesh and Assam.

This is the largest hydroelectric project ever undertaken in India and is a run-of-river project with water storage on Subansiri.

In an exchange filing, NHPC said it "declares commercial operation of unit 2 (250 MW) of Subansiri Lower HE Project...from 00:00 hours on 23.12.2025."

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