Assam: NHPC Limited has achieved a major milestone in the development of its flagship 2000 MW Subansiri Lower Hydroelectric Project, with the successful boxing-up of Unit 5 (250 MW) on June 14, 2026. With this development, the commissioned capacity of the project has increased to 1250 MW across five units, marking steady progress toward full commissioning.
Unit 5 Successfully Boxed-Up in Presence of NHPC CMD
The boxing-up of Unit 5 was completed in the presence of NHPC Chairman and Managing Director Bhupender Gupta, who reviewed the progress at the project site located across Arunachal Pradesh and Assam.
The completion indicates that the unit is structurally ready for the next phase of testing and commissioning activities.
Each generating unit of the project has a capacity of 250 MW, and the latest achievement adds another key milestone to India’s largest ongoing hydropower development.
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Project Progress: 5 Out of 8 Units Completed
With the completion of Unit 5, the overall progress of the Subansiri Lower project is as follows:
- Total project capacity: 2000 MW
- Unit capacity: 250 MW each
- Units completed: 5 out of 8
- Total commissioned capacity: 1250 MW
Once fully operational, the project will significantly enhance hydroelectric power generation in the Northeast region.
Key Stakeholders and Team Efforts Appreciated
NHPC CMD Bhupender Gupta congratulated the project team for their consistent efforts and emphasized maintaining momentum for timely completion of the remaining units.
He also acknowledged the contribution of major executing agencies, including:
- GE Vernova
- BGS-SGS-SOMA
- TREL
- PEL
Local communities and stakeholders were also appreciated for their support in ensuring smooth project execution.
Strategic Importance for India’s Energy Sector
The Subansiri Lower Hydroelectric Project is considered a key national infrastructure asset due to its scale and clean energy contribution.
Key benefits of the project:
- Strengthening India’s renewable energy capacity
- Improving grid stability in the Northeast region
- Supporting national clean energy transition goals
- Reducing dependence on fossil fuel-based power generation
Hydropower projects like Subansiri play a crucial role in balancing renewable energy variability and ensuring long-term energy security.
Full Commissioning to Boost Power Supply
With five units now completed, NHPC is moving closer to the full commissioning of the 2000 MW project. The remaining units are under advanced stages of execution and are expected to further strengthen India’s hydroelectric capacity and eastern power grid stability.
About NHPC Limited
NHPC Limited is a leading Indian public sector enterprise engaged in the development and operation of hydroelectric power projects. The company plays a vital role in promoting renewable energy, enhancing national power infrastructure, and supporting India’s transition toward sustainable and clean energy sources.
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