Abstract The development of Positive Energy Districts (PEDs) is a complex process that involves the integration of various technologies, stakeholders, and policies. To facilitate this process, a database for PEDs has been developed as a joint effort of COST Action ‘PED-EU-NET’, IEA EBC Annex 83, and JPI Urban Europe. This paper reports on the realization of the PED-Database framework and its online implementation as a modular web interoperable platform, giving details on the development life cycle since the scoping phase up to the testing phase. The PED-Database offers a variety of implementation strategies and conceptualizations for the PED concept, making it a valuable resource for urban planners, policymakers, and researchers. The testing phase has shown that there is no one-fits-all solution for PED implementation, and the overall PED framework definitions require further detailing in the local context. However, the database allows users to visualize and compare different PED scenarios by customizing their selection, accessing to the information provided by real PED cases that best meets their expectations and goals. Overall, the PED-Database provides a valuable tool for the development of sustainable and energy-efficient urban areas.