1. Green hydrogen
Hydrogen is an invisible, odorless gas, the first element on the periodic table. It is the lightest and most abundant chemical element on Earth, present in water and hydrocarbons (coal, oil, natural gas). It is not an energy source, but an "energy carrier" that requires energy to be produced before it can be used. The dihydrogen molecule (H
2
) is made up of two hydrogen atoms, but is commonly referred to as hydrogen.
The intermittency of renewable energies makes it difficult to develop them on a massive scale independently of storage systems. The high seasonal variability of photovoltaics means that large-scale, inter-seasonal storage is needed. Batteries...
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Green hydrogen