What are renewable energy sources?

Bild Graphic and chart:The definition of the term “renewable energy sources” is shown visually. By definition, a renewable energy source is either an energy source that grows back again – biomass – or an energy source that is inexhaustible in human dimensions (like the sun or geothermal energy). Because wind power and hydropower are determined by the influence of the sun, they are also counted among the inexhaustible energy sources. Information and ideas:The media file is a very good introduction to the topic of “Renewable Energies”.