This paper summarizes an IEA sponsored study whose purpose was to assess fuel cell power generation configurations that could be adopted if climate change considerations lead to a need to reduce emissions of CO2 to the atmosphere. The study provided a comparison of performance, CO2 emission, capital cost, cost of electricity, and cost of avoiding CO2 emission among four atmospheric, or near atmospheric, molten carbonate fuel cell/CO2 capturing plants (fueled with either coal or natural gas). Each fuel cell combined cycle plant with CO2 capture was compared with a similarly-sized reference combined cycle plant without CO2 capture to develop comparison characteristics. Data for the reference plants were taken from previously completed IEA studies. The first reference plant was a coal-fueled integrated gasification combined cycle (IGCC).(1) This plant features an oxygen-blown, entrained-bed gasifier providing fuel gas to a commercially available gas turbine. Waste heat is recovered and utilized in a steam turbine bottoming cycle. The second reference plant was a typical natural gas-fueled gas turbine combined cycle.(2).