The need for innovative solutions in urban energy systems has increased due to the pursuit of sustainable urban development. This poster examines the potential of remote sensing and geographic information system (GIS) technologies in urban energy modelling, with a specific focus on the assessment of buildings' energy performance. The review provides a comprehensive investigation of the theoretical foundations, methodological considerations, practical applications, and potential challenges of using these technologies in the context of data collection for the modelling of sustainable urban energy systems. It aims to provide a holistic understanding of GIS and Remote Sensing within the context of urban energy modelling.