[en] A set of articles proposes an overview of the way the hydrogen sector is presently developing in France: implementation of a France Re-launch plan which comprises a national strategy for the development of de-carbonized hydrogen in France industry decarbonization, development of hydrogen-fuelled transports, support to research, innovation, and skill development), building of the electrolysis sector, development of hydrogen as an alternate electric power vector for heavy mobility (issues of charge points, storage, networks), ways to make hydrogen actually ecological (cleaner processes, first calls for projects). A second set or articles presents some innovative projects (development of a territorial hydrogen ecosystem in the Manche district), comments the opinion of the IEA (necessity to accelerate the development of clean technologies, and not to rely on the market only), briefly presents concepts of zero-emission hydrogen-fuelled plane by Airbus, evokes the perspective of development of selective electro-catalysis fuel cells with an improved lifetime.