Wind energy is a source of renewable energy that uses the force of the wind to generate electricity. The main means to obtain it are the wind turbines, "windmills" of variable size that transform with their blades the kinetic energy of the wind in mechanical ...

Solar energy is produced by light - photovoltaic energy - or the heat of the sun - solar - for the generation of electricity or the production of heat. Inexhaustible and renewable, because it comes from the sun, is obtained by means of panels and ...

Hydraulic power or hydraulic energy is a source of energy that takes advantage of the water fall from a certain height to generate electricity. It takes advantage of the energy of a stream or the natural ...