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 of electricity.Electricity generation capacity of Chile by Comisión Nacional de Energía The plant was built by ENDESA in 2004. The project has proven controversial with local indigenous Mapuche since a graveyard had to be flooded by the dam.
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