COVID-19 scenario Driving Urban Transition GIS overlay analyses PED boundary Physics Positive Energy District Positive Energy Districts Renovation Wave Research & information: general building dynamics building performance simulation building thermal mass deep energy retrofit district heating economic costs enabling solution for PED transition energy and climate goals energy efficiency energy efficiency in buildings and real estate energy flexibility energy modelling energy production energy sufficiency geographic information systems human interaction indoor environmental quality information and communication technologies multi-criteria decision analyses neighbourhoods occupants' comfort