Using biogas in a more power-efficient decentralized way requires technological breakthroughs allowing for greater power
generation at the expense of low amounts of recoverable thermal
energy. This alternative can be provided by fuel cells, as suggested
by the roadmap of the Fuel Cells and Hydrogen Joint Technology
Initiative (FCH JTI) [3]. Specifically, high-temperature fuel cells,
such as Molten Carbonate Fuel Cells (MCFC) and Solid Oxide Fuel
Cells (SOFC), appear to be the most suitable for the application of
biogas due to their higher fuel flexibility, accepting not only
hydrogen but also other fuels as syngas, natural gas and biogas [4].
Furthermore, differently from low-temperature fuel cells, such as
Proton Exchange Membrane Fuel Cells (PEMFC) and Phosphoric
Acid Fuel Cells (PAFC), carbon monoxide is not a poison for these
systems [5], but, on the contrary, it can be used as a fuel; hence its
removal is not necessary. Finally, biogas reforming in hightemperature fuel cells can be carried out within the fuel cell system (and not externally); which improves the overall energy balance