Bridging simulation and real-world data: Insights from solar energy communities experiences in Switzerland and Canada

This paper explores the development of neighborhood-scale solar energy communities to enhance energy self-sufficiency, resilience, and efficiency. Through the integration of solar photovoltaics (PV), battery storage, electric vehicles (EVs), and microgrids, these communities optimize local energy use and reduce grid dependency. Two complementary case studies are analyzed: Aigues-Vertes, Switzerland, where dynamic energy modelling (PVSyst®, PowerFactory®) is used to simulate solar PV integration and storage strategies, and West 5, Canada, where real-world performance data assesses the effectiveness of passive and active solar strategies, microgrid operations, and energy flexibility. A qualitative comparative approach is used to analyze implementation processes, contextual constraints, and design strategies within differing institutional and planning frameworks. Findings underscore the value of simulation in pre-implementation planning and the role of empirical data in validating long-term system performance. Both cases demonstrate high levels of self-consumption, substantial CO₂ emission reductions, and strong economic viability. This paper concludes with ten key recommendations to guide policymakers, urban planners, and developers in overcoming implementation barriers and scaling up solar-powered urban communities as part of the broader energy transition and climate strategy. • Neighborhood-scale solar solutions enhance energy autonomy and grid resilience. • Case studies in Switzerland and Canada demonstrate real-world flexibility strategies using solar PV. • Integration of solar PV with electric vehicles, HVAC systems, battery storage, and microgrids optimize energy flows. • Simulation tools are critical for pre-implementation feasibility studies and real-world validation. • Ten strategic recommendations address barriers to widespread adoption of solar energy communities.