This study examines the potential of carbon fiber composite tanks as a lightweight and efficient alternative to stainless steel (SS316) for satellite propulsion systems, with a specific focus on the Algerian satellites ALSAT-1B and ALSAT-1. The analysis involves conducting a finite element analysis (FEA) using SOLIDWORKS to evaluate the structural behavior of the carbon fiber tank design under high-pressure conditions. The findings reveal that carbon fiber tanks achieve exceptional mass efficiency and considerable weight savings compared to their SS316 counterparts. While SS316 remains a feasible option for low-pressure applications, its heavier structure makes it unsuitable for higher-pressure scenarios, where mass constraints are critical. Although carbon fiber tanks involve higher fabrication costs, the significant reduction in weight offers a range of benefits, including lower launch expenses and increased payload capacity. These advantages emphasize the suitability of carbon fiber composites for next-generation satellites’ propulsion systems, contributing to enhanced performance and efficiency, especially for long duration missions.