China Starts Building World's Largest Hydropower Dam in Tibet

China's Premier Li Qiang announced construction had begun on what will be the world's largest hydropower dam, located on the eastern rim of the Tibetan Plateau and estimated to cost around $170 billion, the official Xinhua news agency said.

- FARAH MASTER & SAMUEL SHEN

The dam is China's most ambitious hydropower project since the Three Gorges Dam on the Yangtze, with operations expected sometime in the 2030s.

Made up of five cascade hydropower stations, the dam will be located in the lower reaches of the Yarlung Zangbo. A section of the river falls a dramatic 2,000 metres (6,561 feet) within a short span of 50 km (31 miles), offering huge hydropower potential.

India and Bangladesh have already raised concerns about its possible impact on the millions of people who live downstream, while NGOs have warned of the risk to the environment, one of the richest and most diverse on the plateau.