Renovation Digital Twin for Building Retrofit Monitoring: A Software Product and An Organizational Ecosystem

To meet the European energy-saving and decarbonisation goals, the delivery of renovation projects must be accelerated. Automated processes and software tools are crucial to facilitate and optimise the project execution and onsite monitoring by providing early warnings and notifications to the project team so as to anticipate potential issues that may impact the completion of the project on time, within budget and with agreed quality. Digital twins are one of the most promising approaches as they provide real-time data and use simulation to inform and help speed up decision-making processes. This paper presents the design, development, and deployment of a Renovation Digital Twin (RDT) that enables monitoring of the retrofitting progress and the provision of feedback to the project stakeholders. The RDT platform aims at addressing a set of 7 design requirements including compliance with the General Data Protection Regulation (GDPR) while sensing building data. The RDT developed integrates 13 Key Performance Indicators (KPIs) allocated to 5 application domains: quality, cost, scheduling, safety, and environment.