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Dagmara Hydro-Electric Project: Bihar

  • 15 Jun 2021
  • 3 min read

Why in News

Recently, a Memorandum of Understanding (MoU) has been signed between National Hydro Power Corporation (NHPC) Limited and Bihar State Hydroelectric Power Corporation Limited (BSHPC) for Implementation of Dagmara Hydro-Electric Project, Supaul, Bihar.

  • NHPC is a Category-A Miniratna Company under the Ministry of Power, in the field of Hydropower.
    • It is the largest organisation for hydropower development in India, currently, NHPC has 24 operational power stations with a total installed capacity of 7071 Mega Watt (MW).

Key Points

  • About:
    • The project is located near village Dagmara on the right bank and Simri on the left bank, about 22.5 km downstream of Bhimnagar barrage on Kosi river.
    • It is a Run-of-the-River scheme. Run-of-river hydro projects use the natural downward flow of rivers and micro turbine generators to capture the kinetic energy carried by water.
      • Typically water is taken from the river at a high point and diverted to a channel, pipeline, or pressurised pipeline (or penstock).
    • The project will have the total capacity of generating 130 MW energy, in which 17 units of 7.65 MW will be installed for power generation.
    • The estimated cost of construction of this project is at Rs. 2478.24 crore.
  • Significance:
    • It will be a landmark project in the power sector scenario of Bihar as far as green power is concerned.
    • Apart from generating clean and green power, the execution will boost the socio-economic and infrastructure development in the area and shall also create employment opportunities.

Kosi River

  • The Kosi is a trans-boundary river which flows through Tibet, Nepal and India.
  • It has its source in Tibet that includes the world's highest upland; it then drains a large part of Nepal before emerging onto the Gangetic plains.
  • Its three major tributaries, the Sun Kosi, Arun and Tamur meet at one point just upstream of a 10 km gorge cut through the Himalayan foothills.
  • The river crosses into northern Bihar, India where it branches into distributaries before joining the Ganges near Kursela in Katihar district.
  • Its unstable nature has been attributed to course changes and the heavy silt it carries during the monsoon season, and flooding in India has extreme effects.
    • The Kosi carries the maximum amount of silt and sand after the Brahmaputra in India.
  • It is also known as the “Sorrow of Bihar” as the annual floods affect about 21,000 km2 of fertile agricultural lands thereby disturbing the rural economy.

Source: PIB

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