A system and method for producing electricity is described. The system comprises a fuel cell assembly. The system may comprise a steam turbine and a generator. The fuel cell assembly may be used to provide heat to produce the steam used to power the steam turbine. The system may comprise a gasifier that is operable to produce a fuel for use in the fuel cell assembly. The system may comprise an air separation unit that is operable to supply oxygen to the gasifier and to the fuel cell assembly for reaction with the fuel. The oxygen that is not reacted in the fuel cell assembly may be recirculated through the fuel cell assembly. Spent fuel from the fuel cell assembly may be recirculated through the fuel cell assembly. A carbon dioxide removal system may be used to remove carbon dioxide from the fuel upstream of the fuel cell.