In the context of the present discussions on sustainable energy supply concepts hydrogen is often one of favoured solutions. Today however, hydrogen production is globally still based on fossil fuels. Hydrogen is generated for instance as a by-product of industrial processes (e. g. chlorine-electrolysis) or when reforming natural gas. The expected advantages as to sustainability can only be granted, if already the hydrogen generation process complies with the sustainability-principles - using regenerative energy sources.
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