The shift towards sustainable and decentralised energy production has encountered a notable gap between the need to establish energy communities and the existing technological and infrastructural basis provisions for their facilitation. A concerted effort is thus required to align capabilities with the requirements for fostering energy transitions. This paper introduces the ACeT method, a novel decision-making approach aimed at involving citizens in the context of sustainable energy transitions. The aim is to support the collaborative development of visions and roadmaps by citizens and regional/local authorities, who co-create strategies to mitigate broader societal impediments to the adoption of renewable energy. By addressing issues such as bureaucratic procedures, inequitable tariffs, and legal constraints, this approach offers valuable insights for stakeholders. Policymakers can further scrutinise and substantiate these insights and recommendations derived from this novel approach.