 This paper investigates the use of a molten carbonate fuel cell, MCFC, combined with exhaust gas recirculation, EGR, or selective exhaust gas recirculation, SEGR, to reduce CO2 emissions from a gas turbine engine. The CO2 concentration is increased by injecting gas turbine exhaust into the MCFC's cathode. This is compared to two novel gas-themed combined cycle systems integrated with MCFC EGR, or SEGR with CO2 capture. The thermal efficiency of these systems is 56.08%, which is 1.3% higher than the reference system. Additionally, the cost of CO2 avoided in the new system with SEGR will be equal to that of the system with the MEA technique for CO2 capture if the MCFC cost is reduced to 904 US dollars and 40 cents per square meter. This article was authored by Jing Bien, Li Chiang Duan, and Yongping Yang.