The basic concept of a Digital Twin (DT) is a realistic digital representation of a physical thing with two-way flow of information from the physical to the model and back: one way is a refinement of the digital representation, back is the triggering of real impacts on the depicted reality. This concept was introduced by the manufacturing community to improve product life-cycle. It has extended to the built environment and underpins areas ranging from urban administration to telecommunications. Locationenabled Digital Twins are investigated at city and national levels motivated by cost reduction, efficiency, decision-making and innovation, and particularly to contribute to local and national Net Zero initiatives [Ellul et al. 2022].@en