Exergy and energy analysis of a solid oxide fuel cell-gas turbine-supercritical CO<SUB align="right">2 hybrid system: economic and environmental assessment

As global energy demand rises due to population growth and industrialisation, efficient power generation is essential. This study develops a hybrid power system integrating a supercritical CO2 (sCO2) cycle, solid oxide fuel cell (SOFC), and gas turbine (GT). Using computational analysis, the system's energy, exergoeconomic, and environmental performance was evaluated. Results showed a 7.19% increase in efficiency and power output compared to the conventional SOFC-GT system, with a 7.39% reduction in CO2 emissions. Despite a 2.17% cost enhance, the hybrid system offers superior efficiency and sustainability. Overall, proposed hybrid system offers enhanced efficiency and environmental benefits over traditional configurations.