二滩水电站位于四川省攀枝花市境内的雅砻江下游，是我国在本世纪建成的最大水电站。高度为２４０米的双曲拱坝为中国第一，在同类型坝中排在世界第三位；由地下主厂房、主变压器室、尾水调压室组成的地下洞室群，其规模居亚洲之首；共安装６台５５万千瓦的发电机组，总装机容 Ertan Hydropower Station is located in the lower reaches of Yalong River in Panzhihua City, Sichuan Province, which is the largest hydropower station built in our country in this century. The height of 240 meters of double-curvature arch dam is the first in China, in the same type of dam ranked third in the world; by the underground plant, the main transformer room, tail water surge chamber composed of underground caverns, its size Asia’s first; a total of six 550,000 kilowatts installed generating units, the total installed capacity