What is green energy?
The term "green energy" usually refers to electricity generated from renewable energy sources such as hydroelectricity (dams), or wind, solar, geothermal or biomass energy. Green energy therefore has two major advantages: its low impact on the environment, and the fact that it presents an alternative to the increasingly scarce energy resources that we currently use in vast quantities on a global scale.
In reality, green energy (often referred to as "clean energy") is a source of energy whose generation
only produces low levels of pollution in comparison to other, more polluting sources (coal, oil and gas). However, generation is only part of the production cycle of a "green" energy. It does not take into account the resources used upstream during the construction phase, such as rare metals or ores, or the production of waste during operation, or the end-of-life phase of the source.
If we therefore consider the full life cycle
of energy generation technologies, it is clear that there is no such thing as clean energy – and that it is, in any case, a relative term.