China hydropower company plans first downstream dam on Brahmaputra

Description

Context: China’s media reported that authorities have given the go-ahead for a Chinese hydropower company to construct the first downstream dam on the lower reaches of the Brahmaputra river, or Yarlung Zangbo as it is known in Tibet, marking a new phase in China’s hydropower exploitation of the river with potential ramifications for India.

State-owned hydropower company POWERCHINA had signed “a strategic cooperation agreement” with the Tibet Autonomous Region (TAR) government to “implement hydropower exploitation in the downstream of the Yarlung Zangbo River” as part of the new Five-Year Plan (2021-2025).
China in 2015 operationalised its first hydropower project at Zangmu in Tibet, while three other dams at Dagu, Jiexu and Jiacha are being developed, all on the upper and middle reaches of the river.
The project “will play a significant role in realising China’s goal of reaching a carbon emissions peak before 2030 and carbon neutrality in 2060”.
Chinese hydropower groups have long campaigned to tap the “Great Bend”, but projects have so far not taken off over concerns over the technical feasibility in the steep Yarlung Zangbo Grand Canyon.
India has expressed concerns to China over the four dams on the upper and middle reaches, though dams are not likely to impact the quantity of the Brahmaputra’s flows in India greatly because they are only storing water for power generation and the Brahmaputra is not entirely dependent on upstream flows with an estimated 35% of its basin is in India.
A dam at the Great Bend, if approved, would raise fresh concerns considering its location downstream and just across the border from Arunachal Pradesh.

About Brahmaputra river

The Brahmaputra called Yarlung Tsangpo in Tibet, is a trans-boundary river which flows through Tibet, India and Bangladesh.
The river originates from the Kailash ranges of Himalayas at an elevation of 5300 M.
After flowing through Tibet it enters India through Arunachal Pradesh and flows through Assam and Bangladesh before it joins Bay of Bengal.
National Waterway 2 (NW-2) is a section of the Brahmaputra River having a length of 891 km between the Bangladesh border near Dhubri and Sadiya in Assam.