ISO13790isaninternationalstandardthatprovidesasimplifiedcalculationmethodforestimatingtheenergyuseforspaceheatingandcoolinginbuildings.Itispartofaseriesofstandardsaimedatassessingtheenergyperformanceofbuildingsandiswidelyusedinenergyperformancecertification,buildingdesign,andenergyefficiencyevaluations.Thestandardoutlinesasetofproceduresandformulastocalculatetheenergyneedsbasedonfactorssuchasbuildingcharacteristics,climateconditions,andoperationalparameters.Itservesasapracticaltoolforengineers,architects,andpolicymakerstoevaluateandimprovetheenergyefficiencyofbuildings.Themethodologybalancesaccuracyandsimplicity,makingitsuitableforarangeofapplicationsfromregulatorycompliancetopreliminarydesignassessments.
