The world is going towards the decarbonization of the production of energy, developing new technologies for a better exploitation of the existing sources. It leads to explore the renewable ones, such as solar, thermal, wind and even the ocean; first ones have been developed for years, earning a lot of achievements, but the main drawback is their unpredictability and irregularity. The exploitation of the ocean’s kinetic energy partially resolves these problems since tidal are much more predictable over long time scales because they follow the Moon cycle, being caused by gravitational interactions between the Moon itself, the Sun and the Earth.