Ralco Hydroelectric Plant
      
Ralco Dam
 
Ralco Hydroelectric Plant  is a hydroelectric power station and dam in Bío Bío Region, Chile. The plant uses water from the upper Bío Bío River and produces 690 megawatts (930,000 hp) of electricity.[1] The plant was built by ENDESA in 2004.[1] The project has proven controversial with local indigenous Mapuche since a graveyard had to be flooded by the dam.
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Coordinates: 38°02′45″S 71°28′32″W / 38.0457°S 71.4755°W / -38.0457; -71.4755