Several European bus manufacturers consider the hybrid fuel cell (FCH) bus as the most promising technology to facilitate the decarbonisation of public transport. By leveraging the experiences of past fuel cell bus projects, implementing technical improvements that increase efficiency and reduce costs of FCH buses, as well as introducing a modular approach to hydrogen refuelling infrastructure build-up, the High V(Flanders).L(Liguria) O(ScOtland)-City project aims at significantly increasing the “velocity” of integrating these buses on a larger scale in European bus operations.• The project will address the following key issues: Increase energy efficiency of the buses and reduce cost of ownership:o hydrogen consumption down to 7–9 kg H2/100kmo integrating latest drive train and battery technologieso availability of 90% without the need of permanent supporto >12.000 hours warranty and decreased additional warranty costo increase lifetime of key components as fuel cells and batteries.o investment cost <1,3 million euro• Reduce the cost of hydrogen supply:o Liguria: linking with renewable hydrogen sourceso Antwerp: using by-product hydrogen from industryo Aberdeen: making use of an existing hydrogen production and distribution mechanisms and eventually Scotland’s extensive wind energy resources• Consolidate past, current and future fuel cell bus demonstration activities by creating an active dissemination network of Hydrogen Bus Centres of Excellence in collaboration with the Hydrogen Bus Alliance, Global Hydrogen Bus Platform, CHIC Dissemination task force and JTI hydrogen bus demonstration projects. More specifically High V.LO City will:o Building on the experience of Van Hool the USA (21 buses 2005-2010) and Oslo (5 buses 2011)o Link Liguria, Antwerp, and Aberdeen, with already existing activities in United Kingdom (London), the Netherlands (Amsterdam and Arnhem), Germany (Cologne, Hamburg, Berlin), Spain (Madrid, Barcelona) and Italy (Bolzano and Milano).