Power in the dam is generated by 32 Francis turbines developed by joint international and Chinese ventures, with each turbine producing 700 MW of energy. Efficiency of the turbines averages over 94%.
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Despite the havoc, Chinese authorities claim the Three Gorges Dam has succeeded in playing a “crucial role” in intercepting floodwaters. The dam's operator, China Three Gorges Corporation, told China's state news agency Xinhua that the dam has intercepted 18.2 billion cubic meters of potential floodwater.
One of the most controversial aspects of the mega-project was its enormous cost for villagers who had lived for centuries on the banks of the river. To make way for the dam's massive reservoir, about 1.4 million people were uprooted, their ancestral homes demolished, communities broken up and farmlands flooded.
When the dam is completed, 13 cities, 140 towns and over 1,300 villages will be submerged by the Three Gorges Reservoir. To make way for the Three Gorges Dam, 1.5 million people will have to abandon their homes. More than 160,000 citizens have already been relocated.
The Three Gorges Dam is the biggest concrete dam in the world constructed on the Yangtze River in Hubei province, China. The dam is 2.2 Km long with 60 stories and a height of 160m. 40,000 workers worked on it for 17 years; starting in 1994 it became operational in 2012.