This forms the 32nd unit of the power project, which has an overall capacity of 22.5GW constituting 11% of all hydroelectric power produced in the country.
According to the Xinhua state news agency the dam had already generated a total of 564.8bn kWh of energy, saving nearly 200m tonnes of coal per annum.
The project is operated by China Yangtze Power and is estimated to have cost more than $50m.
China Yangtze Power general manager Zhang Cheng was quoted by The Guardian, UK as saying, "The complete operation of all the generators makes the Three Gorges dam the world’s largest hydropower project, and the largest base for clean energy."
Construction of the project commenced in 1994 and the first 700MW unit was completed in July 2003.
