Table of Contents
China’s Mega Dam Project on Yarlung Tsangpo
Project Launch & Scale
- Started on July 19, 2025: China began building the world’s biggest dam on the Yarlung Tsangpo River (which becomes the Brahmaputra in India) in Tibet. The ceremony was led by Premier Li Qiang.
- Huge Size and Design: The project will have five smaller dams in a row, built along the steep canyon where the river drops almost 2,000 metres in just 50 km.
- Power & Cost: This dam will cost around 1.2 trillion yuan (about US $167 billion) and will produce 300 billion units of electricity every year, almost three times more than China’s famous Three Gorges Dam.
Energy Ambitions & Economic Rationale
- Clean Energy Goal: China says it wants to use this dam to produce clean electricity and help the country become carbon neutral in the coming years.
- Boost to Economy: Experts say this project will greatly benefit China’s economy because it will create a high demand for cement, steel, construction machinery, and building tunnels.
- Stock Market Impact: After the announcement, the shares of companies working in dam construction, steel, and hydropower increased sharply in China’s stock markets.
Geopolitical & Water-Security Ramifications
- Worries for India & Bangladesh: Both countries are concerned that China can control the flow of water in the Brahmaputra, which might cause floods or droughts in their regions.
- Indian Leaders’ Statements: Arunachal Pradesh Chief Minister Pema Khandu said the dam is like a “ticking water bomb” because it can harm people living downstream if not managed properly.
- China’s Response: China says it has discussed this with neighbouring countries and that it is building the dam within its own territory for development.
Environmental & Social Risks
- Impact on Nature: This river flows through the world’s deepest canyon and is home to many rare plants and animals like snow leopards and unique flowers. The area is very delicate and any big construction can harm the environment.
- Risk of Earthquakes & Landslides: Because the place is near earthquake zones, experts fear that building such a huge dam could cause landslides or make the region unstable.
- Effect on Local People: Many Tibetan groups are worried about relocation of people and damage to their religious places. The government has not said how many will be displaced but it is expected to be fewer than the Three Gorges Dam, which displaced 1.3 million people.
Construction Details & Timeline
- Approval & Work: The dam was approved in December 2024. Companies like PowerChina and China Yajiang Group are handling the construction. It includes digging four tunnels, each about 20 km long, through a huge mountain to direct the river’s flow.
- When It Will Start Working: The first unit will start producing electricity in the early or mid-2030s, and the entire project is expected to be ready by around 2033.
- Comparison with Three Gorges Dam: This new project will generate three times more electricity than the famous Three Gorges Dam in China and will cost five times more to construct.
Regional Responses & Countermeasures
- India’s Plans: To deal with the risk, India is planning its own dams on the Siang River (which becomes Brahmaputra) to make sure it has some control over water flow and to prevent sudden flooding.
- Assam Chief Minister’s View: Assam CM Himanta Biswa Sarma said there is no immediate danger because Brahmaputra also gets water from Bhutan, Arunachal, and monsoon rains. He even suggested that the dam might reduce floods in some areas.
- Talks Between Countries: India and China are discussing sharing river data and flood information but experts say China still needs to be more transparent about its plans to build trust with neighbours.
Important questions
- On which date did China begin building the world’s largest hydropower dam on the Yarlung Tsangpo River, which is known as the Brahmaputra in India?
- What is the total amount of electricity that China’s new Yarlung Tsangpo dam project is expected to produce every year?
- Why are countries like India and Bangladesh worried about China constructing a massive dam on the Brahmaputra River?
- Which Chinese companies have been given the responsibility to construct the huge hydropower project on the Yarlung Tsangpo River?
- By which year does China plan to complete and make fully operational its world’s largest hydropower dam on the Yarlung Tsangpo River?
Conclusion
China’s Yarlung Tsangpo dam will be the largest hydropower project in the world, creating massive amounts of clean electricity and boosting its economy. But it also brings big challenges – harm to the environment, risk of earthquakes, possible displacement of local communities, and fears among neighbouring countries about water security. As the dam is built over the next decade, it is important that China works closely with India and Bangladesh to make sure everyone benefits and there is no major disaster in the future.
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