42As is apparent from recital 8 of Directive 2003/87, from recital 8 of Directive 2009/29 and from recital 8 of Decision 2011/278, the achievement of that objective implies the inclusion in that system of activities which have some potential to reduce greenhouse gas emissions. As confirmed by all the observations submitted to the Court, ‘production of hydrogen’ within the meaning of Annex I to Directive 2003/87 has such a potential because of the intensity of the emissions of greenhouse gases generated by that activity. By contrast, that is not the case of a process of separation of hydrogen contained in a rich gas mixture, such as that at issue in the main proceedings, which seeks only to achieve a higher amount of hydrogen present in a gas mixture.
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