1、InternationalStandardISO50002-2Firstedition2025-06Energyaudits一Part2:GuidanceforconductinganenergyauditusingISO50002-1inbuildingsAuditsenergetiques一Partie2:Recommandationspourlaconduited,unauditenergetiqueselonISO50002-1dansdesbdtimentsReferencenumberISO50002-2:2025(en)COPYRIGHTPROTECTEDDOCUMENTISO2
2、025Allrightsreserved.Unlessotherwisespecified,orrequiredinthecontextofitsimplementation,nopartofthispublicationmaybereproducedorutilizedotherwiseinanyformorbyanymeans,electronicormechanical,includingphotocopying,orpostingontheinternetoranintranet,withoutpriorwrittenpermission.Permissioncanberequeste
3、dfromeitherISOattheaddressbeloworISO,smemberbodyinthecountryoftherequester.ISOcopyrightofficeCP401Ch.deBlandonnet8CH-1214Vernier,GenevaPhone:+41227490111Email:copyrightiso.orgWebsite:www.iso.orgPublishedinSwitzerlandContentsPageForewordivIntroductionv1 Scope12 Normativereferences13 Termsanddefinitio
4、ns14 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 Datameasuremen
5、tplan85.6 Sitevisit95.6.1 Sitevisits95.6.2 Managementoffieldwork95.7 Analysis95.7.1 General95.7.2 Analysisofcurrentenergyperformance95.7.3 Identificationofenergyperformanceimprovementopportunities115.7.4 Evaluationofenergyperformanceimprovementopportunities115.7.5 Prioritizationofenergyperformanceim
6、provementactions125.8 Reporting125.8.1 General125.8.2 Reportcontent135.9 Closingmeeting146 Competenceoftheenergyauditor14AnnexA(informative)Datawhichcanbecollected16Bibliography.21ForewordISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISOmemberbodi
7、es).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhastherighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandnon-governmental,inliaisonwithISO,alsotakep
8、artinthework.ISOcollaboratescloselywiththeInternationalElectrotechnicalCommission(IEC)onallmattersofelectrotechnicalstandardization.TheproceduresusedtodevelopthisdocumentandthoseintendedforitsfurthermaintenancearedescribedintheISO/IECDirectives,Part1.Inparticular,thedifferentapprovalcriterianeededfo
9、rthedifferenttypesofISOdocumentshouldbenoted.ThisdocumentwasdraftedinaccordancewiththeeditorialrulesoftheISO/IECDirectives,Part2(seeWWW.iso.org/directives).ISOdrawsattentiontothepossibilitythattheimplementationofthisdocumentmayinvolvetheuseof（八）patent(三).ISOtakesnopositionconcerningtheevidence,valid
10、ityorapplicabilityofanyclaimedpatentrightsinrespectthereof.Asofthedateofpublicationofthisdocument,ISOhadnotreceivednoticeof（八）patent(三)whichmayberequiredtoimplementthisdocument.HoweverlImplementersarecautionedthatthismaynotrepresentthelatestinformation,whichmaybeobtainedfromthepatentdatabaseavailabl
11、eatWWW.iso.org/patents.ISOshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights.Anytradenameusedinthisdocumentisinformationgivenfortheconvenienceofusersanddoesnotconstituteanendorsement.Foranexplanationofthevoluntarynatureofstandards,themeaningofISOspecifictermsandexpressionsrelatedtoconfo
12、rmityassessment,aswellasinformationaboutISOsadherencetotheWorldTradeOrganization(WTO)principlesintheTechnicalBarrierstoTrade(TBT),seeWWW.iso.org/iso/foreword.htmLThisdocumentwaspreparedbyTechnicalCommitteeISO/TC301,Energymanagementandenergysavings.AlistofallpartsintheISO50002seriescanbefoundontheISO
13、website.Anyfeedbackorquestionsonthisdocumentshouldbedirectedtotheusersnationalstandardsbody.AcompletelistingofthesebodiescanbefoundatWWW.iso.org/members.htmLIntroductionAnenergyauditcanhelpanorganizationidentifyopportunitiestoimproveenergyefficiency.Itcanbepartofasite-wideenergymanagementsystem(EnMS
14、).Energyauditsinbuildingscanhelptoachieveimprovementssuchas: energyconservation; energyefficiency; improvedoccupantcomfort,healthandwell-being; sustainabilitygoalsandtargets; climateresilience.Thebenefitstotheorganizationcaninclude: reducedenergyandoperatingcosts; improvedinformationforassetmanageme
15、nt; wiserinvestmentstrategybasedonenergyauditresults; meetingorganizationalgoalsrelatedtogreenhousegas(GHG),emissionsreductionnetzero,materialsuse,productivityandoccupantsatisfaction.Theuseandoperationofbuildingsrequirestheprovisionofservicessuchasheating,cooling,ventilation,lighting,domestichotwate
16、r,transportationsystems(e.g.elevators,escalators,movingwalkways)inbuildings,informationsystemsandprocesses.Inaddition,theoperationOfbuildingstypicallyinvolvesotherenergyendusessuchasappliancesorplugloadswithinthebuilding.Abuildingsenergyconsumptiondependson: localclimateconditions; thecharacteristic
17、softhebuildingenvelope; theageandtypologyofthebuilding(三) thedesignedindoorenvironmentconditions; thecharacteristicsandsettingsofthetechnicalbuildingsystems; activitiesandprocessesinthebuilding; occupantbehaviourandoperationalregime.Whendealingwithbuildings,theauditedobjectsaresometimessimilar,techn
18、icallysimpleandnumerous(e.g.intheresidentialsector),butcanalsobeunique,complexandhighlytechnical(suchashospitals,swimmingpoolsandspas,etc.).Energyauditsinbuildingsmayincludethewholebuilding,partsofthebuildingorsomeparticulartechnicalsystem.Energyperformanceindicators(benchmarkvalues,ifavailable)orav
19、eragestatisticalspecificenergyconsumptiondataareusuallypublishednationallyfordifferentbuildingtypesandages.Thisinformationcanbeusedintheanalysistoprovidecomparativeenergyperformanceevaluation.Wherethisinformationisnotavailable,comparabledatacanbefoundforsimilarclimatesthroughinternationalsources(e.g
20、theInternationalEnergyAgency(IEA).NOTETheenergyauditscoveredbythisdocumentcanbeindependentfrombuildingenergyperformancecertification.EnergyauditsandenergysavingopportunitiesidentifiedinenergyauditsarebestimplementedinthecontextofanEnMS,suchasoneconsistentwithISO50001.Whetherornotanorganizationhasan
21、EnMSinplace,organizationsaremorelikelytoachievetheintendedoutcomesofanenergyauditwhentheirtopmanagementsupportstheauditobjective(三)andagreestoprovidesufficientresourcesfortheauditprocessandpost-auditactivities.Energyaudits一Part2:GuidanceforconductinganenergyauditusingISO50002-1inbuildings1 ScopeThis
22、documentgivesguidanceonhowtoapplyISO50002-1tocarryoutenergyauditsofabuildingorgroupofbuildings(neworexisting).Itisintendedtobeusedinconjunctionwith,andissupplementaryto,ISO50002-1.Thisdocumentdoesnotapplytootherareassuchasprocessaudits(seeISO50002-3),specificenergysystems(pressedair)ortransport.This
23、documentisapplicabletobuildingsandcanbeusedindependentlyorinconjunctionwithISO50002-3.2 NormativereferencesThefollowingdocumentsarereferredtointhetextinsuchawaythatsomeoralloftheircontentconstitutesrequirementsofthisdocument.Fordatedreferences,onlytheeditioncitedapplies.Forundatedreferences,thelates
24、teditionofthereferenceddocument(includinganyamendments)applies.ISO50002-1,EnergyauditsPart1:Generalrequirementswithguidanceforuse3 TermsanddefinitionsForthepurposesofthisdocument,thetermsanddefinitionsgiveninISO50002-1andthefollowingapply.ISOandIECmaintainterminologydatabasesforuseinstandardizationa
25、tthefollowingaddresses: ISOOnlinebrowsingplatform:availableathttps:WWW.iso.org/obp IECElectropedia:availableathttps:/www.electropedia.org/1.1buildingconstructionasawhole,includingitsenvelopeandalltechnicalbuildingsystems(3.5),forwhichenergycanbeusedtoconditiontheindoorclimate,andtoprovidedomestichot
26、water,illuminationandotherservicesrelatedtotheuseofthebuildingandtheactivitiesperformedwithinthebuildingNote1toentry:Thetermcanrefertothebuildingasawholeortopartsthereofthathavebeendesignedoralteredtobeusedseparately.Note2toentry:Thebuildingcanincludeitssitelocationandrelatedexternalenvironment.Note
27、3toentry:Processeswithinthebuilding(e.g.chillingoffoodinsupermarkets)areaddressedinISO50002-3.Totheextentthattheenergyuseofsuchprocessesaffects,orisaffectedby,thebuilding,theycanbeincludedinthescopeoftheenergyauditprocessdescribedinthisdocument.1.2buildingenvelopeelementsofabuilding(3.1)thatenclosec
28、onditionedspacesthroughwhichthermalenergycanbetransferredtoorfromtheexterior,ortoorfromunconditionedspaces1.3buildingfabricallphysicalelementsofabuilding(3.1),excludingtechnicalbuildingsystems(3.5)EXAMPLERoofs,walls,floors,doors,gatesandinternalpartitions.Noteltoentry:Itincludeselementsbothinsideand
29、outsideofthethermalenvelope,includingthethermalenvelopeitself.Note2toentry:Thefabricdeterminesthethermaltransmission,thethermalenvelopeairtightnessand(nearlyallof)thethermalmassofthebuilding(apartfromthethermalmassoffurnitureandtechnicalbuildingsystems).Thefabricalsomakesthebuildingwindandwatertight
30、Thebuildingfabricissometimesdescribedasthebuildingassuch,i.e.thebuildingwithoutanytechnicalbuildingsystem.SOURCE:ISO52000-1:2017,3.1.51.4buildingserviceserviceprovidedbythetechnicalbuildingsystems(3.5)andbyappliancestoconditiontheindoorenvironment(thermalcomfort,airquality,visualandacousticquality)
31、andotherservicesrelatedtotheuseofthebuilding(3.1)(suchasescalators/elevators)1.5technicalbuildingsystemtechnicalequipmentforheating,cooling,ventilation,humidification,dehumidification,domestichotwater,lighting,informationsystemsincludingbuildingautomationandcontrol,andon-siteenergyproductionNote1toe
32、ntry:Atechnicalbuildingsystemcanrefertooneortoseveralbuildingservices(3.4)(e.g.heatingsystemincludingheating,domestichotwatersystemandcontrols.Note2toentry:Atechnicalbuildingsystemiscomposedofdifferentsubsystemsandincludescontrols.Note3toentry:Electricityandthermalenergyproductioncanincludecogenerat
33、ion,windpower,photovoltaicsystems,districtenergy,heatpumpsandotherrenewableenergysources,withintheagreedscopeoftheenergyaudit.Note4toentry:ISO52000-1providesdefinitionsofspecifictechnicalbuildingsystems.SOURCE:ISO52000-1:2017,3.3.13,modifiedinformationsystemsincluding,1addedand,on-siteenergywreplace
34、d“electricity“inthedefinition.ExamplechangedinNote1toentry.Notes2and3toentryexpanded.Note4toentryadded.4 PrinciplesofenergyauditingTheprinciplesofISO50002-1apply.5 Performinganenergyaudit5.1 GeneralThegeneralrequirementsofISO50002-1apply.5.2 Planning5.2.1 GeneralWhenplanninganenergyauditforabuilding
35、therelationshipsbetweentheowner,operatorandtenantshouldbeclarified.Theirrolesandresponsibilitiesinabuildingcanbedifferent.Forexample,abuildingcanbeowner-operated,occupiedandmaintainedbyasingleorganization.Abuildingcanalsobeowned,operated,maintainedandoccupiedbydifferentorganizationsand/ortenants.Th
36、eauditclientshouldspecifytheobjectivesoftheenergyaudit,andthelevelofdetailandthoroughnessrequired.Considerationsfortheenergyauditobjective(三)include:a) reducingenergyconsumptionandcosts;b) reducingenvironmentalimpactssuchasGHGemissions;c) checkingorensuringtheindoorenvironmentforqualityofhealthandwe
37、ll-being(comfort,indoorairqualityandilluminancelevels);d) awarenessofrelevantlegislationandvoluntaryobligationsandcommitments;e) limitationsonimprovingenergyperformanceincontrolledbuildings(e.g.historicalorculturallysignificantbuildings);f) evaluatingpotentialoptionsforuseofrenewableenergyand/orstor
38、age.ISO50002-1:2025,AnnexA,describesthreedifferenttypesofenergyaudit,eachhavingadifferentlevelofdetailandthoroughness.Thelevelofdetailagreedbythepartieswillhaveanimpacton: application; businessneeds; datacollection; analysis; opportunitiesidentification; opportunitiesevaluation; outputs; thetimeon-s
39、ite.Whenplanningfortheenergyaudit,theauditclientshouldidentifyalltheinterestedparties,theirrolesinthebuilding,theirneedsandexpectationsfromtheenergyaudit,andtheirrespectiveinfluenceontheenergyaudit.AbreakdownofinterestedpartiesandtheirtypicalrolesinanenergyauditareshowninTabIeISO2025-Allrightsreserv
40、edTable1InterestedpartiesandtheirtypicalrolesinabuildingenergyauditInterestedpartyPossiblerecipientoftheenergyauditDataproviderInvolvedinthemeetingsInvolvedinthefieldworkBuildingorapartmentownerXXXPropertymanagerXXXFacilitiesmanagerXXXXEngineeringservicesmanagerXXXOperationandmaintenancestaffXXXSecu
41、ritystaffX(X)(X)Occupant/tenantyyyyStaff(whoworkinthebuildingpermanently)(X)PartlyTemporaryoccupants(patients,clientsinashop)ContractorsandsafetypersonnelyyyCommercialXSometimesNo,unlesstherecipientXResidential（X）No,unlesstherecipientXKeyX:directinvolvement(x):indirectinvolvementy:asappropriate5.2.2
42、 EnergyauditscopeandboundariesTheenergyauditscopeandboundariesshouldbedefinedandagreedbetweentheenergyauditorandtheauditclient.Ataminimum: )theauditclientshouldhaveoperationalcontrolof,andhaveanabilitytoinfluenceandseekthecooperationof,thetenants; )theenergyauditscopeshouldcoverenergyuseswithinthebu
43、ildingand/ortheinteractionofenergyuseswithotherenergyusewithinthebuilding(optimizationofsomeenergyusewhileexcludingotherscangivemisleadingresults); )wherethescopeofanauditincludesonlypartsofabuilding,suchasatenancy,theauditscopemayneedtoaccountforinteractionswiththebasebuilding(suchasthebuildingenve
44、lope)ortechnicalsystems(e.g.sharedspaceheatingorcoolingsystems).Considerationsfortheenergyauditscopeandboundariesinclude: collectionofbuildings/campus,buildingsfromalistOfbuildingsorpartsofabuilding; interdependenciesandinteractionsbetweenthebuildingfabric,energyuseinsidethebuilding,andthebuildingse
45、rvicesandtechnicalbuildingsystems; energyuseoutsidethebuildingaffectingorimpactingonthoseinsidethebuilding; whereappropriate,energyperformanceindicatorsthatcanbeused; criteriaforevaluatingandrankingopportunitiesforimprovingenergyperformance(e.g.simplepayback,internalrateofreturn,decarbonization,non-
46、energybenefits); constraintsthatcanimpacttheenergyperformanceofthebuildingssuchaspurposeorlegal; on-siteandrenewableenergygeneration.Ajointsitevisitbetweentheauditclientandtheenergyauditorcanfacilitatethedefinitionofenergyauditscopeandenergyauditobjective(三).5.2.3 EnergyauditcostTheauditclientshould
47、notethatalloftheaboveitemsaffecttheenergyauditcosts.Otherfactorsthatcanaffectenergyauditcostsinclude: theavailabilityofbothenergyperformancedataandequipment-relateddata; theextenttowhichlongerpaybackopportunitiesareinvestigated; theavailabilityofpreviousenergyauditreports/studies; thecomplexityofthebuildingandwhetherprocessesandequipmentareunusualorcustomdesigned; excessivedisruptionand/orchangestotheplannedenergyaudit.Theorganizationshouldensurethatthescopeoftheenergyauditandexpectedenergyauditcostarereasonable(fromtheorganizationspersp
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