Variable-head hydroelectric power plant comprising an upstream intake works (1) adapted to intercept at least partially the water coming from a source, a pipeline (2) connected to said upstream intake works (1) in a manner adapted to receive and channel therein, at least partially, the water intercepted by the upstream intake works (1), comprising: - a floating platform (3), adapted to be arranged and to float on the surface of a basin; - a hydraulic turbine (4) arranged on the floating platform (3) and connected to the pipeline (2), in a manner adapted to receive the water coming from the pipeline (2).
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