Insignificant Emissions

By avoiding a combustion process to convert fuel to electricity, the SOFC does not produce nitrous oxides (NOx) or fine particulate matter. Furthermore, because sulphur compounds are poisonous for the fuel cell, they need to be extracted from the fuel beforehand to ensure reliable operation, therefore sulphurus oxide (SOx) emissions are insignificant. In this way it is also guaranteed that no harmful compounds are released into environment, shifting the onus of emission control onto the fuel supplier, where it can be handled efficiently and centrally. 

Thanks to the SOFC's high efficiency, for a given amount of power produced less primary fuel is required, wich means less CO2 is emitted to the atmosphere. 

If the fuel is obtained from renewable sources, such as biogas, the operation of the SOFC is effectively carbon-neutral and ultra clean.