About the Lower Subansiri Hydroelectric Power Project:
- It is the biggest hydroelectric project undertaken in India so far.
- It is a run-of-river scheme on the river Subansiri.
- Location: The Project is located near North Lakhimpur on the border of Arunachal Pradesh and Assam.
- Capacity: 2000MW
- It will generate up to 7.4 billion kWh of electricity annually.
- The project includes the construction of a surface powerhouse and a concrete gravity dam that is 116m-high from the river bed level.
- The length of the dam will be 284m.
- The dam is located in the Dhemaji district of Assam, while the powerhouse is located in the Subansiri district of Arunachal Pradesh.
- It is being developed by the state-run National Hydro Power Corporation (NHPC).
- Funding:
- The project cost was met through 70% equity and 30% debt financing through the provision of a term loan.
- The central government is providing budgetary support as part of the equity component.
Key facts about the Subansiri River:
- Subansiri River, better known as the "Gold River,r" is the largest tributary of the Brahmaputra River.
- It flows through Assam, Arunachal Pradesh, and the Tibet Autonomous Region of China.
- Course:
- Originating from the Himalaya Mountains, it flows towards the east and south-east portions of Arunachal Pradesh and then flows to Assam Valley.
- Finally, it joins the Brahmaputra River in Lakhimpur district, Assam.
- It joins the Brahmaputra at the mystic confluence of Majuli Island, which is noted as the largest inhabited river island in the world.
- Total Length: 442 kilometres
