OpenGIS4ET successfully delivered Citiwatts 3.0, a comprehensive open-source energy planning platform that advances the green transition across heating, cooling, mobility, and sector coupling domains. Building on the H2020 Hotmaps foundation, the project reached TRL-8 by providing default data for all EU27 nations, UK, Norway and Switzerland at national and local levels, enabling energy planners and public authorities to efficiently analyze, model, and map solutions to meet their energy demands.
The platform features a robust DevSecOps development framework with continuous security analysis through SonarQube integration, responsive design compatibility across desktop and mobile devices, and comprehensive two-factor authentication through Keycloak services. A secure public API enables external system integration, while advanced session management allows users to maintain multiple calculation results per module, transforming the tool from single use to a comprehensive analysis workspace.
Three sophisticated calculation modules were developed and validated through real-world case studies: The EV-Mobility tool provides Vehicle Kilometer Travelled mapping with charging behavior modeling across four scenarios (home, workplace, points of interest, and home office charging), coupled with photovoltaic production potential analysis. The District Heating and Cooling tool addresses temperaturelevel optimization with economic feasibility assessment. The Sector Coupling tool integrates electrical, heating, and transport systems through connection with EnergyPLAN, enabling comprehensive flexibility analysis for multi-sector energy planning.
The project exceeded dissemination targets with 1,457 person-hour equivalents through summer schools (250 participants), webinar series, and training events across partner countries. Case studies in Denmark, Austria, Switzerland, and Germany confirmed the platform's effectiveness in diverse regulatory and technical contexts. Export capabilities including PDF reports, ZIP packages, and Excel format compatibility extended practical utility for integration into existing planning workflows.
The platform's success enabled major spin-off projects including OpenMod4Africa (extending energy planning capabilities to 500 million citizens across West and East Africa), CoolLIFE (sustainable cooling solutions), SAPHEA, and the OFPP project (microgrid resilience planning). Academic integration at University of Applied Sciences Western Switzerland and TU Wien ensures ongoing educational impact, while comprehensive wiki documentation and training materials support continued adoption beyond the project timeline.