Quality infrastructure for sustainable hydrogen solutions in Namibia Helga Hansen, Simasiku Matali, Moritz Ackermann, Fabian Plag, Olav Werhahn, Arne Krietsch, Arnas Lucassen and Michael Beyer EPJ Web Conf., 323 (2025) 03001 Published online: 07 April 2025 DOI: 10.1051/epjconf/202532303001