A zero-dimensional model was implemented to simulate the performance of a solid oxide fuel cell (SOFC) with Mo-doped ceria (CMO) anode using humidified (3%v/v water) syngas (50%v/v H2 - 50%v/v CO) as fuel. The model was validated preliminarily using polarization data (cell voltage vs current density, Δ vs , curves) generated experimentally at 800 C using a SOFC supported on the electrolyte (a 20 mm diameter, 250 μm thickness yttria-stabilized zirconia, YSZ, disc) with a 14 mm diameter CMO-YSZ|CMO anode and a 14 mm diameter LSM (lanthanum strontium manganite)|LSM-YSZ cathode, that was connected to a Gamry Reference 3000 potentiostat/galvanostat/ZRA using platinum mesh and wires. Open circuit voltage was modeled using a Nernst equation corrected by H2 and CO electrooxidation reactions selectivity at the anode, which was determined through the resolution of relevant mass balances as a function of the SOFC thermodynamics and kinetics.