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considering all the required frameworks. Most of the existing studies have used only onesoftware tool to analyze energy efficiency in all stages of drawing, analysis and thermalsimulation, which increases the probability of error. In the current study, one of the mostpowerful software tools has been used in each stage by examining the strengths andweaknesses of software. AutoCAD software has been used at the drawing stage to reduce thedrawing and volumizing error. The weather tool was used in Ecotect software to analyzeclimatic data. Moreover, DesignBuilder software was used for dynamic thermal simulation(DTS) and analysis of the building, as well as was used the PVsyst software to design andevaluate the renewable energy yield. In general, the building was first designed andevaluated in Ecotect software in terms of optimum building orientation by consideringparameters such as daylight, shade and wind. Then, the building energy consumption wasevaluated in DesignBuilder software in two modes, with and without complying with theprinciples of sustainable design. Finally, based on the optimum annual tilt angle of Mashhad,the energy produced by the solar panels in PVsyst software was estimated and comparedwith the energy consumption of the building. The findings showed that complying with theprinciples of passive design in the building will significantly reduce energy consumption andachieving zero energy in the building at a lower cost will be more practical.Problem statementGiven the rapid economic development of metropolitan cities in Iran, the construction industryhas entered its critical phase. According to the latest information, about 260 million m2 ofbuildings are constructed annually (Sheykhansari, 2016). The residential, commercial andoffice buildings have accounted for the highest energy consumption, about 40% of the totalenergy produced in the country (Amani and Reza Soroush, 2020). Therefore, supporting the useof environmental energy and the development of green and zero-energy buildings has becomean important activity in Iran. The solution to the problem is to provide the energy needed byany energy-consuming system, including the building within the same set to overcome theenergy crisis and reduce greenhouse gas emissions. A vision that changes the quality of lifeand prepares us for life in the new era. In this regard, to create the best conditions in thebuilding is emphasized the study of the architecture of buildings with the minimum energyrequired and the maximum use of solar energy. This study was accomplished by focusing onthe feasibility of constructing a ZEB using computer simulation and analysis, in the cold andsemi-arid region of Iran. A case study was selected by choosing the best computer simulation inthe cold and semi-arid region using Ecotect and DesignBuilder software, taking into account allthe required frameworks. Table 2 shows the design of ZEB design.Research methodologyThe building energy consumption strategy in this study was conducted with the approach thatthe researchers were pursuing to develop a sustainable and environmentally friendly adaptivemodel. This study was performed in four stages. The first step involved collecting data andTable 2.The design phases ofthe zero-energybuilding (ZEB)ZEB design Passive design methods Choosing suitable orientation, choosing properinsulation, the position of windows, walls,porches, canopies and trees, using double-glazedwindows with low emissivity coefficient,Trombe walls, green roof and canopyActive design methods andrenewable technologiesSolar PVs, wind turbines, fuel cells, solar waterheaters and heat pumpsZero-energyresidentialbuilding