Patent ID: 10731624

Abstract:
A tidal power generation and storage system (10) comprises a lagoon (12) and a plurality of reservoirs (14) separating the lagoon from an area of tidal water (16). Each reservoir (14) comprises a seawall (20) surrounding a reservoir chamber (22). The system has a first flow channel (30) in communication between the area of tidal water (16) and the lagoon (12) which directs flow through a turbine (32) to generate electrical power. The system also has a second flow channel (40) to allow communication between two adjacent reservoirs and a third flow channel (90) to allow communication between a reservoir and the first flow channel. The seawall (20) of each reservoir (14) comprises a gravity structure comprising a plurality of layers of a mixture of sand and/or other seabed material with a hydraulic binder. The system can be built using material sourced at the point of construction, and allows storage and pumping of water in the reservoirs (14) and lagoon (12) to maximise the period over which power can be generated.