In the near future, the automated performance and intelligence of cities will become a vital need to improve the economic, social and environmental well-being of citizens. Urban smart technologies play an important role in the sustainable development of cities and make smart cities a reality. In this sense, the energy sustainability of cities has become a global concern, and has brought with it a wide range of research and challenges that affect many aspects of people's lives. Buildings that make up an urban subsystem In fact, buildings are the cornerstone of global carbon dioxide emissions. Therefore, the present study seeks to identify the factors affecting the reduction of urban energy consumption for the sustainability of smart metropolises. The present research is descriptive-analytical and survey, the sample size is 15 city managers, managers and professors of information and communication technology. Data analysis was performed by structural equation method (SEM) with SPSS and Smart PLS software. The results show that the greatest impact on reducing energy consumption in the direction of urban sustainability in the metropolis of Tabriz is related to the physical index (PH), citizens' satisfaction and comfort index (SA), energy consumption management. (CM) with the extracted coefficients based on the structural model of the research are 0.965, 0.960 and 0.902, respectively. Therefore, to reduce energy consumption for sustainability in the metropolis of Tabriz, the use of smart urban development methods along with the forecast of smart buildings will be very effective.