NHPC declares Subansiri Unit 5 commercial from 23 October, lifting capacity to 1,250 MW

What happened

• Unit 5 of the Subansiri Lower Hydroelectric Project, rated at 250 MW, enters commercial operation from 00:00 hours on 23 October 2026, according to Whalesbook and Sahi.
• Five of the project's eight units are now commercially operational, giving 1,250 MW of the 2,000 MW designed capacity. Three units of 250 MW each, 750 MW in all, remain, per Sahi.
• Whalesbook published at 8:43 PM on Wednesday and Sahi at 5:58 AM on Thursday.
• The shares closed at ₹72.65 on Wednesday, per Zerodha Kite.

Why it matters

Neither report gave a date for the remaining three units.

Good to know: Commercial operation is the date from which a power unit is treated as available to supply and earns revenue under its tariff arrangements. It follows testing and commissioning, which can come earlier.

Key facts

Unit 5 capacity

250 MW

Effective from

00:00 hours, 23 October 2026

Operational capacity at Subansiri

1,250 MW of 2,000 MW (five of eight units)

Read the source

• NHPC Commissions Fifth 250MW Unit of Subansiri Lower Hydroelectric ProjectWhalesbook
• NHPC Declares Commercial Operation Of 250 MW Unit 5 At Subansiri ProjectSahi