Tidal energy is generated by the movement of tides, which are caused by the gravitational pull of the moon and sun on the Earth's oceans.

Horizontal axis turbines are the most commonly used type of tidal energy generator because they are relatively simple to design and build, and they can be used in a variety of tidal conditions.

Tidal energy is a predictable source of energy because the tides are caused by the gravitational pull of the moon and sun, which are constant forces.

Tidal energy can only be used in coastal areas because it is generated by the movement of tides, which only occur in the ocean.

The United Kingdom is the world leader in tidal energy production, with a total installed capacity of over 1 GW.

The potential global capacity of tidal energy is estimated to be around 100,000 GW, which is more than the current global electricity demand.

The development of tidal energy faces a number of challenges, including the high cost of construction and maintenance, the negative impact on marine life, and the visual impact of tidal energy generators.

Tidal energy has a number of potential benefits, including the fact that it is a clean and renewable source of energy, it is a predictable source of energy, and it can help to reduce our dependence on fossil fuels.

Single-basin barrages are the most common type of tidal barrage. They consist of a single basin that is filled and emptied by the tide.

Impoundment lagoons are the most common type of tidal lagoon. They consist of a lagoon that is enclosed by a堤坝, which allows water to flow in and out of the lagoon through a turbine.

Tidal barrages are located in rivers, while tidal lagoons are located in coastal areas. Tidal barrages generate electricity from the ebb and flow of the tide, while tidal lagoons generate electricity from the difference in water level between the lagoon and the sea. Tidal barrages are more expensive to build than tidal lagoons.

Tidal energy can have a number of environmental impacts, including disrupting fish migration, damaging marine habitats, and creating noise pollution.

There are a number of ways to mitigate the environmental impacts of tidal energy, including using fish-friendly turbines, siting tidal energy generators in areas with low marine biodiversity, and using noise-reducing technologies.

Tidal energy is expected to play a significant role in the global energy mix, as it is a clean, renewable, and predictable source of energy.