The ELEXIA project aims to develop tools for integrated energy system planning and management across sectors, focusing on digitalization, resilience, and flexibility. Key activities include developing a System Planning Toolbox, Energy Management Systems, and a Digital Services Platform. The project will demonstrate these tools in three pilot sites in Portugal, Denmark, and Norway. Measurable outcomes include reducing energy and grid demand, achieving significant CO2 emissions reductions, and contributing to EU policy frameworks for energy integration and sustainability. The main objectives are to enable cost-optimized and resilient energy systems, promote sector coupling, and support the EU’.