The world's largest clean energy corridor generated more than 276 billion kilowatt-hours of green power last year, a 5.34 percent year-over-year increase, said its operator China Three Gorges Corporation.

This is equivalent to saving 83 million metric tons of standard coal and reducing carbon dioxide emissions by more than 200 million tons, it said.

With a total installed capacity of 71.7 million kilowatts, the corridor comprises six mega hydropower stations on the Yangtze River, the largest river in China. Comprising 110 generating units, it transmits electricity from the resource-rich west to energy-consuming regions in the east of China.

Four of them, Wudongde, Baihetan, Xiluodu and Xiangjiaba, are located on the Jinsha River, the upper section of the Yangtze River, while the other two, the Three Gorges Dam and Gezhouba, are on the middle section of the Yangtze.

They form a 1,800-km-long clean energy corridor that also plays a major role in flood control, shipping, water resources utilization and ecological security in the Yangtze River Basin, said China Three Gorges Corporation.