THE tidal energy, also known as tidal energy, is obtained through the use of energy from the unevenness of the tides. For this energy to be converted into electricity it is necessary to build dams, locks (allowing the entry and exit of water) and energy generating units.
The system used is similar to a hydroelectric plant. The dams are built close to the sea, and the dikes are responsible for capturing water during high tides. The water is stored and then released during low tide, passing through a turbine that generates electricity.
The force of the tides has been used since the 11th century, when the French and English used this device to move small mills. However, the first major project for the generation of electricity through the tides was carried out in 1967. That year, the French built a 710-meter dam on the Rance River, harnessing the energy potential of the tides.
This is a good alternative for electricity production, as tidal energy is a clean font and renewable. However, it is important to highlight that few localities have favorable characteristics for obtaining this type of energy, since the tidal difference must be greater than 7 meters. Other aggravating factors are high investments and low energy use.
Among the places with potential for the production of tidal energy are the Bay of Fundy (Canada) and the Bay of Mont-Saint-Michel (France), both with more than 15 meters of unevenness. In Brazil, we can highlight the Bacanga River estuary, in São Luís (MA), with tides of up to 7 meters, and, mainly, the island of Macapá (AP), with tides that reach up to 11 meters.
By Wagner de Cerqueira and Francisco
Graduated in Geography
Brazil School Team
Source: Brazil School - https://brasilescola.uol.com.br/geografia/energia-das-mares.htm