Lower Subansiri Hydroelectric Power Project

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Overview:

State-run hydropower company NHPC Ltd. Will soon start trial runs for the Subansiri Lower project.

About Lower Subansiri Hydroelectric Power Project:

  • It is the biggest hydroelectric project undertaken in India so far.
  • It is a run-of-river scheme on river Subansiri.
  • Location: The Project is located near North Lakhimpur on the border of Arunachal Pradesh and Assam.
  • Capacity:2000MW
  • It is a concrete gravity dam 116 m high from river bed level.
  • It is being developed by the state-run National Hydro Power Corporation (NHPC).

Key facts about the Subansiri River:

  • It originates in the Tibet Plateau and is the largest tributary of the Brahmaputra River.
  • The high topographic variation makes this river a potential zone for harnessing it for the hydropower.

What is a Gravity dam?

  • Gravity dams are massive structure dams which are constructed of concrete or stone masonry.
  • Concrete gravity dams usually run in a straight line across a broad valley and resist the horizontal thrust of the retained water entirely by their own weight.
  • This type of structure is durable and requires very little maintenance.

 


Q1) What is a Gravity dam?

Gravity dams are massive structure dams which are constructed of concrete or stone masonry. Concrete gravity dams usually run in a straight line across a broad valley and resist the horizontal thrust of the retained water entirely by their own weight.

Source: India set to start mega hydropower project near China border