Lessons learned from analysing PED case studies

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 analyzes international strategies for PED planning and its implementation. To learn from best practice examples, there is an increasing demand for PED cases descriptions that offer a variety of implementation strategies and conceptualizations for the PED concept. The collection of case studies from various settings so far has shown that there is no onefits-all solution for PED implementation, and the overall PED framework definitions require further detailing in the local context. In this paper the challenges and key success factors for planning and implementation of PEDs is described with a focused analysis of three PED cases. One PED case each from Europe, from Canada and from Japan highlights the challenges of PEDs. Similarities and differences of the PED cases are compared and key success factors distilled. Thus, the DNA of PEDs can be further revealed. These are technological solutions, depending on the local circumstances (natural and imposed constraints), planning and implementation processes, and overall local settings (municipality or private sector as a driver) that define the successful implementation of a PED. Overall, the PED-Database provides a valuable tool for the development of sustainable and energyefficient urban areas.