In Ecuador, rejected bananas are not used efficiently because these are discarded in the open air and present environmental and economic problems for banana growers. However, this fruit offers the opportunity to obtain value-added bioproducts due to its chemical composition. The objective of this research was to propose a design for obtaining polyhydroxybutyrate and neutral extra rectified bioethanol (96 %) from rejected bananas, for which the chemical characterization of the fruit peel was performed according to the standards established by the National Renewable Energy Laboratory. In addition, the technical, economic and environmental aspects were analyzed using the Aspen Plus and WAste algorithm Reduction computer packages. Finally, the possible social impacts were analyzed through a socioeconomic analysis considering the location of the biorefinery. The techno-economic results indicated a cost of production of 6.71 USD/kg and 5.52 USD/liter for polyhydroxybutyrate and bioethanol respectively. On the other hand, the results of the environmental analysis indicated that the greatest impacts generated in the two plant correspond to the human toxicity potential by inhalation and terrestrial toxicity potential categories. The social impacts generated by the biorefinery are positive since it offers the possibility of generating 30 direct jobs, improving the economic status for its workers and gender equity.