Energy communities are groups that organise collective and citizen-led energy activities for a clean energy transition. The most efficient balance between the types of energy generation and consumption profiles were studied, as well as energy efficiency measures for better demand and supply combinations. The aim is to prove that the more diverse the load profiles, the greater the synergy benefits. The potential pathways for governance were also analysed. Sud-Oest del Besòs in Barcelona, Spain was utilised as a pilot area. Several case studies were analysed and different types of renewable technologies were investigated in order to understand the size, physical and regulatory constraints and governance that should be considered. It was concluded that the most balanced combination for the analysed energy community is: energy demand profiles: three schools, civic centre, market and 42% of the residential buildings within a 500m radius (24% of the neighbourhood) and energy supply technologies: 2400 horizontal PV panels, 1960 south-west vertical PV panels and 300 rooftop wind turbines. This will generate 64.58% of self-consumption and hence, provide the community with lower energy bills and reduced energy poverty issues. By implementing simple behaviour change measures, 90.1% of the energy demand could be self-generated. Due to the current regulations, the system will have to follow the “proximity via network” modality, which establishes static distribution coefficients rather than dynamic. This could impact the project negatively in terms of potential earnings from selling the surplus energy back to the grid. Two potential pathways for governance were shown in the report, which take into account ownership and investment possibilities. It is expected that installing an energy community and utilising the profits for regeneration will lower energy poverty issues, improve social cohesion and the living standards.