Major challenges nowadays, both at national and at international level, are the rational management of waste and the penetration of Renewable Energy Sources (RES) in the energy mix. Biogas plants are modern technological units that combine the rational management of high organic load residues with the production of clean energy.
The paper deals with the management of waste produced by olive mills at Municipality of Souli. Through primary research, the total quantity of OMW is recorded and the optimal technical and economic solution is recommended. In the context of this study, the fusion of OMW with residues of high organic load was selected. Furthermore, the construction of a biogas unit for electricity and heat production and its feasibility has been also examined. It appears that this unit is not just the best available technique for livestock and agricultural wastes management and utilization, but also a particularly attractive investment.