Abstract
This study evaluates the integration of biotechnologies, such as biodigesters, into the design of energy systems composed of solar collectors, liquefied petroleum gas (LPG) and natural gas pipeline networks, with the aim of meeting the thermal demand of the municipality of Silos, Colombia, and promoting the circular economy through the use of organic waste from agricultural activity. The energy planning project was designed using a multi-objective mixed integer linear programming (MOMILP) model, which aims to minimise the net present value (NPV) and total CO2 emissions generated. The results of the model show that the integration of biodigesters is a key factor in fully meeting the thermal demand of the area, considering the availability of local resources. The greatest energy contribution from biodigesters was in alternative A10, with a 2.10% share of the total energy generated by the energy matrix. The proposed methodology and considerations provide essential information for policymakers and stakeholders in energy planning projects and can be applied to a wide variety of projects aimed at integrating thermal districts.
