Tidal energy

By Margaux, Destiny, Brandon, and Micheal

Tidal Energy Plant in South Korea (biggest in the world)

Big image

Technology and Development

With the water moving up and down we are to be able to capture some of that tidal energy. Tidal generators (or under water turbines) work like wind turbines, but uses the tides (Who could have guessed that). An ebb is the movement of the tide out to sea.the average electric power output is severely limited by the twice-daily ebb and is less than 40% of the installed generating capacity. The lunar cycle of 24 hours 50 minutes means the raw production of tidal energy moves in and out of phase with the normal, solar-oriented daily pattern of electrical consumption. optimum tidal-power locations are site-specific, which often means that lengthy power transmission lines must be provided to move the power from the tidal-power site to the end user.

Process

The tidal energy generators kind of looks like a dam but works kind of like a wind mill but under water. On one side the water is high where the water starts and the water comes out the other end which has low water. The turbines work as the tides move and when the turbines spin it creates energy.

Concerns for wildlife and the environment

There are many concerns with using Tidal Energy. First there is a huge concern with the marine wild life. There is a huge chance of killing the animals with the turbines and decreasing food in the area. Also these plants must be close to land which restricts certain water areas. The plants also decrease the salinity in tidal basins and reduces the kinetic energy in he ocean.

Costs

Tidal-power projects are very expensive. A UK system in Severn Estuary which produces 8,000 MW has been estimated to cost $15 billion US dollars while one in San Philippines for the Bernadino straight which produces 2,200 MW will cost $3 billion US dollars. There for the price of the plant will depend on size of the area.