The invention relates to the field of hydropower and can be used in the design, construction and operation of hydroelectric power to the diversion of 100 MW. The technical result of the utility model is to provide all-weather operation stage derivational hydroelectric disposed at a reservoir with a limited supply of water. The technical result is ensured by the fact that, in stage derivational hydroelectric containing reservoir, dam, concrete channel located downstream dams, hydroelectric sequentially installed in the channel, according to the utility model, outside the channel and below the last hydroelectric cascade mounted hydraulic pump with drive motor, reported and water intake conduit by means of a spent water stream and the injection cavity pump communicates via a pressure conduit to the reservoir.
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