In programs for energy effective renovation of dwellings it is hard and still not clear how to select the right target group regarding the dwellings saving potential (hardware) and decision making private homeowner (software). In this research linear components of different factors and variables of dwellings and their occupants are extracted in a principal component analysis (PCA). With the components and the actual geographical coordinates of the dwellings different cluster analyses are conducted searching for new spatial contiguous energy clusters and target group clusters. The target area of the research is only one district in Eindhoven. Therefore the promising results obtained should be tested in further research.