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Hydroelectric power plant, Romanche-Gavet, France

France’s largest hydroelectric project will replace six existing power plants on the Romanche River with a single more efficient underground hydroelectric facility.

France’s largest hydroelectric project is the replacement of six power plants with an underground hydroelectric facility and an upstream dam at Romanche-Gavet in the northern Alps of the southeastern Isère region. The project, carried out for EDF, is designed to optimise the hydroelectric potential of the Romanche River and supply 250,000 homes. As part of this work, Dodin Campenon Bernard teams completed the excavation of two caverns (for the plant and the transformers) in 2016, making way for civil engineering work, and continued construction of the tunnel using two TBMs. Meanwhile, the VINCI Construction France teams began filling the Gavet dam in September 2015. 

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