The objective of this European research project is to investigate the conditions and develop policy recommendations for an efficient and inclusive uptake of energy communities, accounting for both layers: the legal foundations given by the Clean Energy for All Europeans Legislative Package1 and recent transformative market developments which are believed to benefit low-carbon community energy prosumerism and are commonly referred to as Energy-as-a-Service (EaaS). The research is positioned within the overarching strategic objectives towards a carbon-neutral European Union, and the effects of energy communities on environmental targets are to be accounted for in the tasks, outputs and deliveries.