ISO 50002-2 2025.docx

InternationalStandardISO50002-2Firstedition2025-06Energyaudits一Part2:GuidanceforconductinganenergyauditusingISO50002-1inbuildingsAuditsenergetiques一Partie2:Recommandationspourlaconduited,unauditenergetiqueselonISO50002-1dansdesbdtimentsReferencenumberISO50002-2:2025(en)COPYRIGHTPROTECTEDDOCUMENT©ISO2025Allrightsreserved.Unlessotherwisespecified,orrequiredinthecontextofitsimplementation,nopartofthispublicationmaybereproducedorutilizedotherwiseinanyformorbyanymeans,electronicormechanical,includingphotocopying,orpostingontheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanberequestedfromeitherISOattheaddressbeloworISO,smemberbodyinthecountryoftherequester.ISOcopyrightofficeCP401Ch.deBlandonnet8CH-1214Vernier,GenevaPhone:+41227490111Email:copyrightiso.orgWebsite:www.iso.orgPublishedinSwitzerlandContentsPageForewordivIntroductionv1 Scope12 Normativereferences13 Termsanddefinitions14 Principlesofenergyauditing25 Performinganenergyaudit25.1 General25.2 Planning35.2.1 General35.2.2 Energyauditscopeandboundaries45.2.3 Energyauditcost55.2.4 Initialagreement55.3 Openingmeeting55.4 Datacollection65.5 Measurementplan85.5.1 General85.5.2 Preliminarydataanalysis85.5.3 Datameasurementplan85.6 Sitevisit95.6.1 Sitevisits95.6.2 Managementoffieldwork95.7 Analysis95.7.1 General95.7.2 Analysisofcurrentenergyperformance95.7.3 Identificationofenergyperformanceimprovementopportunities115.7.4 Evaluationofenergyperformanceimprovementopportunities115.7.5 Prioritizationofenergyperformanceimprovementactions125.8 Reporting125.8.1 General125.8.2 Reportcontent135.9 Closingmeeting146 Competenceoftheenergyauditor14AnnexA(informative)Datawhichcanbecollected16Bibliography.21ForewordISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISOmemberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhastherighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandnon-governmental,inliaisonwithISO,alsotakepartinthework.ISOcollaboratescloselywiththeInternationalElectrotechnicalCommission(IEC)onallmattersofelectrotechnicalstandardization.TheproceduresusedtodevelopthisdocumentandthoseintendedforitsfurthermaintenancearedescribedintheISO/IECDirectives,Part1.Inparticular,thedifferentapprovalcriterianeededforthedifferenttypesofISOdocumentshouldbenoted.ThisdocumentwasdraftedinaccordancewiththeeditorialrulesoftheISO/IECDirectives,Part2(seeWWW.iso.org/directives).ISOdrawsattentiontothepossibilitythattheimplementationofthisdocumentmayinvolvetheuseof（八）patent(三).ISOtakesnopositionconcerningtheevidence,validityorapplicabilityofanyclaimedpatentrightsinrespectthereof.Asofthedateofpublicationofthisdocument,ISOhadnotreceivednoticeof（八）patent(三)whichmayberequiredtoimplementthisdocument.HoweverlImplementersarecautionedthatthismaynotrepresentthelatestinformation,whichmaybeobtainedfromthepatentdatabaseavailableatWWW.iso.org/patents.ISOshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights.Anytradenameusedinthisdocumentisinformationgivenfortheconvenienceofusersanddoesnotconstituteanendorsement.Foranexplanationofthevoluntarynatureofstandards,themeaningofISOspecifictermsandexpressionsrelatedtoconformityassessment,aswellasinformationaboutISO'sadherencetotheWorldTradeOrganization(WTO)principlesintheTechnicalBarrierstoTrade(TBT),seeWWW.iso.org/iso/foreword.htmLThisdocumentwaspreparedbyTechnicalCommitteeISO/TC301,Energymanagementandenergysavings.AlistofallpartsintheISO50002seriescanbefoundontheISOwebsite.Anyfeedbackorquestionsonthisdocumentshouldbedirectedtotheuser'snationalstandardsbody.AcompletelistingofthesebodiescanbefoundatWWW.iso.org/members.htmLIntroductionAnenergyauditcanhelpanorganizationidentifyopportunitiestoimproveenergyefficiency.Itcanbepartofasite-wideenergymanagementsystem(EnMS).Energyauditsinbuildingscanhelptoachieveimprovementssuchas: energyconservation; energyefficiency; improvedoccupantcomfort,healthandwell-being; sustainabilitygoalsandtargets; climateresilience.Thebenefitstotheorganizationcaninclude: reducedenergyandoperatingcosts; improvedinformationforassetmanagement; wiserinvestmentstrategybasedonenergyauditresults; meetingorganizationalgoalsrelatedtogreenhousegas(GHG),emissionsreductionnetzero,materialsuse,productivityandoccupantsatisfaction.Theuseandoperationofbuildingsrequirestheprovisionofservicessuchasheating,cooling,ventilation,lighting,domestichotwater,transportationsystems(e.g.elevators,escalators,movingwalkways)inbuildings,informationsystemsandprocesses.Inaddition,theoperationOfbuildingstypicallyinvolvesotherenergyendusessuchasappliancesorplugloadswithinthebuilding.Abuilding'senergyconsu