NHPC starts rotor assembly for 250 MW Unit 7 at Subansiri Lower project

NHPC Limited has commenced rotor assembly for Unit 7 of its 2,000 MW Subansiri Lower Hydroelectric Project (SLHEP) in Arunachal Pradesh and Assam, marking a key step towards the erection and commissioning of the 250 MW unit.

The milestone was achieved during a visit to the project by Shri Suprakash Adhikari, Director (Technical), NHPC, and Shri Mahesh Kumar Sharma, Director (Finance), NHPC, from August 20 to 22, 2026. Smt. Manisha Shrivastava, Executive Director (Design–E&M), along with other senior officers from NHPC Corporate Office, Faridabad, accompanied them.

During the visit, the Directors inspected the Power House, the Dam site, including the DT Inlet and Outlet areas, and the HRT Intake area. They also reviewed the ongoing electromechanical and hydro-mechanical works at the project.

Shri Pradip Kumar Ray, Executive Director & Head of Subansiri Lower HE Project, briefed the Directors on the project’s power generation status. Units 1–4 are under commercial operation, while preparations are underway for commissioning Unit 5. He also reviewed the progress of balance works for Units 6–8 and other ongoing construction activities.

The commencement of rotor assembly for Unit 7 advances the project’s work towards commissioning of the 250 MW unit and contributes to the overall commissioning of the Subansiri Lower project.

The latest milestone follows NHPC’s completion of boxing-up of Unit 5 of the 2,000 MW SLHEP on June 14, 2026. The project, located across Arunachal Pradesh and Assam, comprises eight units and is being developed with a total installed capacity of 2,000 MW.

Photo credit: NHPC