In this study, modelling and thermodynamic analysis of solar assisted trigeneration system was carried out. The required thermal energy for gas and vapor cycles were supplied from solar tower which is a new concept for gas cycle applications. Additionally, an absorption refrigeration cycle, vapor production process, drying process and water heating process were integrated to the system. Energy and exergy efficiencies of the trigeneration system were determined by the application of first and second law analyses. The results showed that the gas cycle efficiency was found to be 32%, vapor cycle efficiency was found to be 28% and coefficient of performance (COP) values of the refrigeration system was found to be 0.77. Also the highest exergy destruction rate was found to be 3882 kW in solar tower.