Mõõnaenergia

Mõõnaenergia refers to the energy generated from the rise and fall of ocean tides, a form of hydropower. This energy harnesses the kinetic energy of moving water during tidal cycles and the potential energy associated with the difference in water levels between high and low tide. Historically, tidal mills have been used for centuries to grind grain, but modern applications focus on electricity generation.

There are several technologies employed to capture this energy. Tidal barrages are large dams built across estuaries or bays. They work by allowing water to flow into a basin through sluice gates as the tide rises and then releasing it through turbines as the tide falls, generating electricity. Tidal stream generators are more like underwater wind turbines that capture the kinetic energy of tidal currents. These devices are placed in areas with strong tidal flows. Tidal lagoons are artificial enclosures that create a difference in water level, similar to barrages but often less environmentally disruptive.

The potential for mõõnaenergia is significant due to the predictable nature of tides, making it a reliable source of renewable energy. However, the cost of construction for tidal power plants, particularly barrages, can be high. Environmental impacts, such as alterations to marine ecosystems and sediment transport, are also important considerations in the development of such projects. Despite these challenges, mõõnaenergia represents a promising avenue for sustainable power generation.