 Power generation is managed by China Yangtze Power , a listed subsidiary of China Three Gorges Corporation ( CTGC ) — a Central Enterprise SOE administered by SASAC . The Three Gorges Dam is the world 's largest capacity hydroelectric power station with 34 generators : 32 main generators , each with a capacity of 700 MW , and two plant power generators , each with capacity of 50 MW , making a total capacity of 22 @,@ 500 MW . Among those 32 main generators , 14 are installed in the north side of the dam , 12 in the south side , and the remaining six in the underground power plant in the mountain south of the dam . The expected annual electricity generation will be over 100 TWh . 
