This chapter aims at presenting the set of structural issues that can be defined as improbabilities for the implementation of biogas in the public sector. Based on literature reviews on the matter, the case study sought to explain how the concept of circular economy could find these structural and intrinsic issues related to the Brazilian regional reality. Overall, four points for concern were identified, related to the lack of interactions between stakeholders and cohesion between different regions and the traditional political choices of energy sources of the country. Although Brazil’s residue production refers to a great unharnessed potential, structural and historical gaps stand on the full implementation of a circular economy of biogas system. Such issues must be dealt with, begging the question if it is possible to overcome such structural problems.