This paper presents preliminary simulation results from the performance analysis of the integrated systems of calcium oxide (CaO)–carbon dioxide (CO 2 ) capture unit and solid oxide fuel cell (SOFC). The CO 2 was extracted for further sequestration in the CaO–CO 2 capture unit. Three configurations of the integrated systems (CaO-Before-SOFC: CBS, CaO-After-SOFC: CAS and CaO-After-Burner: CAB) were considered. It was found that the CO 2 capture efficiency (E c ) is dependent on CaO fresh feed rate (F 0 ) and CaO recycle rate (F R ). The improvement of SOFC performance was only realized for the CBS system. The SOFC performance increases with increasing CO 2 E c . The preliminary economic analysis was carried out considering total additional cost per mole of CO 2 captured. At a low percentage of CO 2 capture (<42.5%), the CBS system is the most suitable configuration while the CAS system becomes an attractive choice at higher values. However, only the CAB system could be possible at a very high range of CO 2 capture (>94%).