State whether the following statement is true or false.

The tidal power plants are constructed near the mouth of narrow bays.

The given statement is true.

• Tidal energy must be converted into electricity using technology that is very similar to that used in hydroelectric power plants. 
• The first requirement is a dam or “barrage” across a tidal bay. Constructing dams is very expensive. Therefore, the best tidal sites are those where a bay has a narrow opening, thus reducing the length of the dam which is required. 
• Gates and turbines are installed along the dam ( at narrow bays) at specific locations. 
• The gates are opened when there is a sufficient variation in the elevation of the water on the different sides of the barrage. 
• Water flows through the turbines driving an electric generator to generate electricity.