Economic evaluation of facilitated transport membranes for separation of CO2 from two kinds of flue gases, i.e., from a natural gas-fired power plant (NGFPP) and a coal-fired power plant (CFPP), was performed by computer simulation. Gel-coated liquid membranes containing aqueous solutions of a novel carrier, 2,3-diaminopropionic acid (DAPA), were used as facilitated transport membranes. When the CO2 recovery is 50%, the CO2 purity of the recovered gas is 90% and the recovered gas is transported as a gas mixture for sequestration, the energy required was estimated as 8.39% of the energy generated in the case of NGFPP and 10.55% in the case of CFPP. The CO2 separation costs for NGCPP and CFPP were 359yen/kmol-CO2 and 283 yen/kmol-CO2, respectively. When the CO2 recovery is 50%, the CO2 Purity in the recovered gas is 99.9% and the recovered gas is transported as liquefied gas, the energy required was estimated as 11.1% of the energy generated energy in the case of NGFPP and 14.5% in the case of CFPP as 14.5%. The CO2 separation costs from NGCPP and CFPP were 427 yen/kmol-CO2 and 354 yen/kmol-CO2, respectively. The CO2 recovery system by the facilitated transport membrane has an economic advantage in operation energy and CO2 separation cost compared to the polymer membrane system and the chemical absorption system.