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Residential and commercial buildings are responsible for about 40% of the EU's total energy consumption [2]. With current consumption feedback systems, dwellers have the opportunity to get disaggregated real-time energy feedback about their consumption. However, there is often an absence of additional context information, so that the user is not able to derive energy efficient behavior from their energy data. Against this background, this study presents a concept, where indoor-positioning data on room level are used to contextualize energy data. This makes it possible to expend visualizations of current consumption feedback systems and develop new kind of user-interfaces that support everyday-activities.