Today in China, the official was commissioned last unit of hydroelectric power station "San Xia," which cumulative power has become the world's largest hydroelectric power station. At today's underground hydro power hydro system "San Xia" the ceremony of transferring equipment, the General Director of the Chinese electricity joint-stock Corporation "Changjiang" Zhang Cheng has announced full completion of construction and putting into official action of a hydroelectric power station "San Xia" a total capacity of 22.5 million kW, which also became the largest database on the development of clean energy.

On hydroelectric power station "San Xia", consisting of three parts - a hydroelectric power station on the left Bank of the dam of the hydroelectric complex "San Xia", hydro-power plant on the right Bank and underground hydro power plants installed in a total of 32 hydraulic power unit with a unit capacity of 700 000 kW, in particular, on the underground hydroelectric power station has 6 units, including the last one, which today has been commissioned. The first unit was officially put into operation on 10 July 2003. Construction of hydroelectric power station "San Xia" lasted almost 10 years.

Chinese media have noted that the HPP "has become an important platform on which Chinese workers opened the era of independent designing, manufacturing and installation of large hydraulic power units".

According to the General Director of hydroelectric power station "San Xia Li Pinchi, construction of hydropower plays a huge role in easing the tension power supply and the promotion of economic development in the areas in which delivers electricity HPP, gives positive results in the field of protection of ecology.

As at today, on hydroelectric power station "San Xia" in total was generated 564,8 billion kW/h of electricity, which is equivalent to "production" from the Yangtze river to nearly 200 million tons of conditional fuel.