Abstract

Building and faster development of the city, increasing the comfort of living, growing needs for energy and environment at risk indicate the unsustainability of the energy systems in urban areas. Every city has to find own path to sustainable development. The process of sustainability is described as creative, local, and the equilibrium process that should be implemented in all cities or their parts. The process of determining the level of sustainable city development starts with defining the individual indicators. The criteria for assessing the sustainability of the energy system must be defined based on multiple aspects: economic, social and environmental. Energy indicators for sustainable development describe the appropriate criteria to assess the sustainability of urban energy system. This paper shows the consumption of thermal energy in the household and public sector and describes the need to establish indicators in urban areas, which should help in: comparison, evaluation and prediction, in the formation of a database, and to assist the various experts and professionals in improvement of information and training of local communities towards sustainable development. Also, this paper shows the selection, definition and calculation of energy indicators in the building management sector. It is shown, as an example, how the formation of energy indicators for the four selected objects located in the administrative area of the city of Belgrade: 1) apartment in the residental building with district heating system; 2) apartment in the four-floor building with heating system using liquid petroleum gas as a fuel; 3) single-floor house with heating appliances for heating supplied and 4) two-floor house used coal for space heating.