One of the most important challenges of the twenty first century is the reduction of greenhouse gas emissions, which are the main cause of climate change. The use of renewable energy sources, such as wind, solar and hydroelectric power, stands as an alternative to the use of fossil fuels that are still widely used to meet the growing demand for energy. The need to meet climate requirements arises in a context in which fossil fuels cannot be completely eliminated yet: firstly, they are widely used today as fuels for the transport sector; on the other hand, the need to constantly feed the electrical grid requires a stable energy source that can cope with the randomness of renewable energy.