Renewable energies are those that you get from natural sources that produce energy in an inexhaustible and indefinite way. For example, solar energy, wind energy or tidal energy are renewable sources of energy.
Moreover, we use to call them renewable when energy got from sources that regenerate naturally over time, such as forests.
One of the main advantages of renewable energies is that, in addition to being inexhaustible, those have little or no negative impact on the environment, which is why those were call clean energies. Currently, renewable energies are a reality in our society and its benefits for the environment are more than evident.
All societies on the planet are energy consumers to a greater or lesser extent, but the reality is that most of the energy consumed comes from non-renewable sources, such as fossil fuels and nuclear energy, whose negative impact on the environment atmosphere is superior. A noteworthy aspect of renewable energies is that they can be applied and exploited locally, which helps reduce the dependence of populations on large energy producers, favoring economic development and job creation.