China has broken ground on what it says will be the world's largest hydropower project, a $170  billion feat capable of generating enough electricity each year to power Britain.

China has begun construction of the biggest hydroelectric dam in the world. The dam will be located on the Tibetan Yarlung Tsangpo river, also known as the Brahmaputra and Jamuna, just 50 km away from the Indian border in Arunachal Pradesh.

The investment is set to benefit hydropower plant and grid equipment makers, but some analysts warn that market enthusiasm may wane soon.