“…The introduction of LNG to replace fuel oil in internal combustion engines (ICE) will help to reduce CO2 emissions, but it is not sufficient to reach the target: thus, different more sustainable solutions are under analysis. Recent studies in literature highlighted the possibility of employing fuel cell systems, fed by methanol [5,6], biogas [7,8] or hydrogen [9,10], while other authors developed algorithms to compare different fuels by adopting multi-criteria approaches [11,12], considering technical, environmental and economic aspects [13,14]. Among the different choices, Proton Exchange Membrane Fuel Cells (PEMFC), fed by pure hydrogen, present several advantages, such as low noise and vibrations, zero pollutant and CO2 emissions, fast response to load variations and high compactness.…”