Tidal Power: Making Waves in the Energy Game

Tidal barrages , which are estuarine barrages, akin to massive dams. Built across estuaries (a partially enclosed body of water that connects rivers or streams to the open sea) with high tidal ranges, they trap water during high tide and release it through turbines at low tide, generating electricity.

The power generated is proportional to both the area of the impounded water and the square of the height difference between the water levels inside and outside the basin, making tidal range energy most effective in locations with large natural tidal ranges and suitable geography for creating large impoundments.

Unlike river-based hydroelectric facilities, where water can flow only by one direction, tidal barrages can be either one-directional or two-directional, also known as "double generation." The traditional unidirectional generation produces electricity during one phase of the tidal cycle, which is typically when water flows out of the reservoir through turbines during low tide.

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