Aerial photo taken on Dec. 21, 2018 shows the Three Gorges Dam, a hydropower project on the Yangtze River, in Zigui County of Yichang City, central China's Hubei Province. By 8: 25 on Friday, the Three Gorges power plant, the world's largest hydropower project, has generated a total of 100 billion kilowatt-hours (kwh) of electricity this year. (Xinhua/Wang Gang)