Most of the human activities are taken place inside buildings especially in urban areas. These activities are mainly supported by different forms of energies such as electricity, heating which makes the energy management very important especially in urban areas. This paper has made an approach on the analysis of the buildings energy consumption by using geo-information systems (GIS). Energy consumption of the buildings can be visualized in different ways. Web GIS can address this issue very well over the Internet. This study was a part of a project namely POLYCITY, where the buildings are supplied with energy from biomass co-generation plant. The study area is located in Scharnhauser Park, very close to the city of Stuttgart, Germany. Buildings of the project area are provided with consumption data regarding heat and electricity, which forms the basis for analysis and display. GIS can perform the task of visualization in a number of ways; thematic map is one of the best. A web portal is developed for displaying maps and attributes, which enables the residents of the area to evaluate the status of their energy consumption. Dissemination of this information will lead to an increasing awareness among the residents of the project area in terms of energy consumption and supply. The result of this study would support the energy management system to monitor and evaluate the building energy consumption in a very efficient way having a positive impact on power saving in the residential areas.