Resumen
Gravity electrical energy storage system comprising a mass, located inside a tunnel, and movable up and down inside the tunnel connected to a rise and fall subsystem; characterized in that it also comprises a wind turbine subsystem, wherein said turbine subsystem comprises: at least one gallery passable by an air flow in both directions, which connects the tunnel through which the mass moves with a spillway to the outside ; at least one bidirectional wind turbine configured to be traversed by the air flow passing through the at least one gallery; and a generator, associated with the at least one bidirectional wind turbine, configured to generate electrical power from the turbine. (Machine-translation by Google Translate, not legally binding)