Abstract: A plant for producing electrical power from the movement of waves. An offshore dam has a fixed generally vertical surface which is located in open water having wave movement and located vertically at the water surface. A submerged part which is fixed relative to the dam has an opening below the waves and in close proximity to the plane of the vertical surface to receive sea water. A force exerting structure such as a hydraulic pump or a thrust arrangement receives the water through the opening and forces that water through a one-way valve beyond which it is led to a turbine for producing electric power.

Abstract: Plant for producing electric power from the movement of waves, characterized in that it comprises an offshore dam (17) for separating a section (20) of sea inside it, such as a port zone, from an open-sea section (22) and comprising towards this open-sea section (22) a submerged part which has, formed therein, one or more ducts (14, 15) and/or inlets (28) for receiving the water, provided upstream and/or downstream with non-return valve means (8, 10, 29); at least one turbine (16) connected to electric power generating means is positioned in this offshore dam (17) or in a land zone also at a distance from this offshore dam; this turbine (16) is connected upstream to at least one water supply duct (1 1, 25, 30) in turn connected upstream to suitable pumping means (6) or thrust means (31, 32) able to convey the water received via these ducts (14, 15) and/or inlets (28) towards this duct (1 1, 25, 30) for supplying water to this turbine (16).