The present work describes an economic analysis and optimization of a combined ejector-vapor compression refrigeration cycle assisted by solar energy. Two environmentally friendly working fluids are used: water in the ejector sub-cycle, and CO 2 in the vapor compression sub-cycle. The conjugation of the steam-ejector cycle with the CO 2 booster is proposed in order to operate the CO 2 cycle with lower pressure, thus increasing the coefficient of performance (COP). Through the economic analysis the solar collector area and the intercooler temperature are optimized using the f-φ -chart method. Also, a second law analysis was carried out to determine the optimum operation condition for a given exergetic efficiency. The optimization was performed considering the operation of an icemaker for a location in the Amazon River area for given specific cost assessments.