New Delhi: NHPC Limited has declared the Commercial Operation Date (CoD) of Unit 5, with an installed capacity of 250 MW, at the Subansiri Lower Hydroelectric Project from 00:00 hours on October 23, 2026. With the commissioning of the fifth unit, the project now has five operational units with a combined capacity of 1,250 MW.
The Subansiri Lower Hydroelectric Project has a planned installed capacity of 2,000 MW, comprising eight units of 250 MW each. The project is located across Assam and Arunachal Pradesh and is a key part of NHPC’s hydropower development programme.
Subansiri Lower Hydroelectric Project Reaches 1,250 MW Operational Capacity
With Unit 5 entering commercial operation, NHPC has declared the CoD of five units: Unit 1, Unit 2, Unit 3, Unit 4 and Unit 5, each with a capacity of 250 MW.The five operational units together contribute 1,250 MW to the project’s total planned capacity of 2,000 MW. The remaining three units, with a combined capacity of 750 MW, are yet to achieve commercial operation.
NHPC has stated that the Commercial Operation Dates of the remaining units will be announced in due course.
Commercial Operation of Unit 5 Effective October 23
According to the company’s announcement dated October 22, 2026, Unit 5 will achieve commercial operation from 00:00 hours on October 23, 2026.
The update was submitted to the stock exchanges under Regulation 30 of the Securities and Exchange Board of India (SEBI) (Listing Obligations and Disclosure Requirements) Regulations, 2015. The disclosure follows NHPC’s earlier communications regarding progress on the project.
The latest milestone marks further progress in bringing the Subansiri Lower Hydroelectric Project’s planned generation capacity into commercial service.
NHPC Updates Stock Exchanges Under SEBI Listing Regulations
NHPC submitted the latest update to the stock exchanges under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015.
The disclosure follows the company’s earlier intimations regarding the progress of the Subansiri Lower Hydroelectric Project. The announcement confirms the commercial operation of the fifth 250 MW unit, marking another step towards the full operationalisation of the 2,000 MW hydropower project.
Once all eight units become operational, the project will have its full installed capacity of 2,000 MW.
About NHPC Limited
NHPC Limited is a public sector enterprise under the Government of India and a leading hydropower development company. It is engaged in the planning, development and operation of hydropower projects, along with other renewable energy initiatives, to support India’s electricity generation capacity and clean energy transition.
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