Tidal energy is produced by the movement of large masses of water caused by the rising and falling of the tides, as well as by the waves which are created on the surface of the sea by the action of the wind.
Advantages: It is a clean energy source, which has no waste products and is virtually inexhaustible.
Disadvantages: It can only be installed in coastal regions, can be affected by  climatological disasters, depends on the amplitude of the tides and needs large and expensive facilities. The following picture shows a bird's eye view of the tidal energy plant in Le Rance (France).