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

Commencement of the hydropower project, China's most ambitious since the Three Gorges Dam on the Yangtze, was seized by Chinese markets as proof of economic stimulus, sending stock prices and bond yields higher on Monday.

Made up of five cascade hydropower stations with the capacity to produce 300 billion kilowatt-hours of electricity annually, equal to the amount of electricity consumed by Britain last year, the dam will be located in the lower reaches of the Yarlung Zangbo. A section of the river tumbles 2,000 metres (6,561 feet) in a span of 50km (31 miles), offering huge hydropower potential, according to Reuters.