This chapter focuses on studying the concept of Multiple Energy Systems (MES) through analyzing an applied case study, which corresponds to a cocoa plantation. A detailed analysis of a system that integrates various generation technologies is presented. The analysis aims to identify the available energy sources in the area and evaluate their feasibility for integration into the MES. The proposed study will entail an initial stage in which an assessment of the energy demand for the cocoa plantation will be conducted, followed by a corresponding projection for the year 2030. This demand profile will encompass all the processes involved in cocoa production, including irrigation, fertigation, and the post-harvest drying process. Likewise, the system will incorporate thermal energy sources, ensuring the provision of electricity and heat. The energy demand of these processes will be estimated based on the necessary energy inputs and technological requirements. Subsequently, various scenarios will be examined to facilitate the optimal integration of diverse energy sources to satisfy energy needs sustainably, including fossil fuel, solar, biomass (residues), and generation technologies such as biogas turbines, diesel engines, steam turbines, and batteries. Each alternative will be evaluated for its technical viability, based on criteria such as electricity surplus and load dissatisfaction, and its economic feasibility, assessed through metrics such as operational expenditure (OPEX), capital expenditure (CAPEX), and the levelized cost of energy (LCOE).