Operationalizing Community Engagement for Positive Energy Districts: A Dual-Tier Framework and Case-Validated Roadmaps

This study proposes a practical manual for community engagement in Positive Energy District (PED) development. It integrates evidence from three European pilot cases (Austria, Sweden, Spain). Using a dual-tier framework, it integrates an engagement framework, the Theory-of-Change (ToC) sequence for dynamic stakeholder roadmaps, with an assessment framework (an eight-aspect PED Matrix). The ToC model clarifies the socio-organizational pathway from urgency to institutionalization while the roadmaps translate these steps into actionable involvement for public, private, civil, and academic actors across top-down, bottom-up, and hybrid approaches. The proposed ToC framework is further supported by the PED Matrix, covering technology, process, environmental, financial, managerial, governance, social, and legal dimensions, which aims to ensure a holistic and target-oriented assessment using a simple 0–3 maturity scale. Guided by the central research question, “How can community engagement be systematically conceptualized, implemented, and tested throughout the PED life cycle using an integrated ToC model, stakeholder roadmap, and multi-aspect evaluation Matrix?”, this study provides practical instruments for stakeholder profiling and adaptive participation design and demonstrates application across contrasting governance, cultural, and climatic contexts. The three use cases show how engagement strategies can be tailored to secure early wins, sustain momentum, and support long-term ownership and replication. The study thus offers decision-makers and practitioners a scalable, evidence-based approach to embed inclusive participation within technical PED delivery and to strengthen the social robustness of district-scale energy transitions.