I Inverter technology based on igbt has been used in the propulsion system of the jakarta metro to convert dc to ac power. however, the emergence of silicon carbide (sic) technology offers the potential for higher efficiency through reduced switching losses and improved thermal performance. this study aims to evaluate and compare the efficiency of igbt and sic inverters through matlab/simulink-based simulations, serving as a strategic basis for potential technology replacement.the method used involves simulating a three-phase inverter in two configurations: one using igbt and the other using sic. device parameters and traction motor conditions were adjusted to match the existing jakarta metro system. efficiency was measured based on input power, output power, and input current.simulation results show that sic-based inverters exhibit higher efficiency than those based on igbt. under static load conditions, efficiency increased from 95.02% to 96.36%, while under dynamic load it improved from 68,53% to 70,58%, accompanied by a reduction in input power of up to 2,59 kw.these results indicate that sic technology is more energy-efficient and enables lighter and more reliable system designs. therefore, sic is a promising option for the future development of the jakarta metro propulsion system.