[Master's thesis pursued at the University of Zaragoza - external thesis advisors: Miguel Ángel Lozano Serrano and Luis María Serra de Renobales] Design of a renewable system which function is covering the electrical and cooling annual demand of a shopping centre in Zaragoza, Spain. The analysis of the system includes sizing of parabolic trough collector solar field, integrated with a biomass boiler. The assembly has to provide the thermal energy needed in a power Organic Rankine Cycle which produces electricity for chillers and for other uses of the shopping centre besides, a possible connection to the city’s power grid is considered.