The poster entitled “Polymer Electrolyte Membrane water electrolysers” by N. Strataki, A. Pagkalidou, S. Balomenou and D. Tsiplakides (Laboratory of Process Systems Design and Implementation (PSDI), CPERI/CERTH and Department of Chemistry, Aristotle University of Thessaloniki) received the Best Poster Award at the 15th Panhellenic Symposium on Catalysis, which took place at Ioannina on 18-20 October 2018.