As size and cost scale roughly with electrode area, this suggests that a MCFC should be smaller and less expensive than a "comparable" PAFC.
The MCFC also produces excess heat at a temperature which is high enough to yield high pressure steam which may be fed to a turbine to generate additional electricity.
In combined cycle operation, electrical efficiencies in excess of 60% (HHV) have been suggested for mature MCFC systems.
The MCFC operates at between 1110°F (600°C) and 1200°F (650°C) which is necessary to achieve sufficient conductivity of the electrolyte.
To maintain this operating temperature, a higher volume of air is passed through the cathode for cooling purposes.