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UNFCCC/CCNUCC

CDM – Executive Board EB 41

Report

Annex 11

Page 1

Methodological tool

“Tool to calculate project or leakage CO2 emissions from fossil fuel combustion”

(Version 02)

I. SCOPE, APPLICABILITY AND PARAMETERS

Scope and applicability

This tool provides procedures to calculate project and/or leakage CO2 emissions from the combustion of

fossil fuels. It can be used in cases where CO2 emissions from fossil fuel combustion are calculated based

on the quantity of fuel combusted and its properties. Methodologies using this tool should specify to which

combustion process j this tool is being applied.

Parameters

This tool provides procedures to determine the following parameters:

Parameter SI Unit Description

PEFC,j,y tCO2/yr CO2 emissions from fossil fuel combustion in process j during the year y

II. BASELINE METHODOLOGY PROCEDURE

CO2 emissions from fossil fuel combustion in process j are calculated based on the quantity of fuels

combusted and the CO2 emission coefficient of those fuels, as follows:

∑×=

yi,yj,i,yj,FC, COEFFCPE

(1)

Where:

PEFC,j,y = Are the CO2 emissions from fossil fuel combustion in process j during the year y

(tCO2/yr);

FCi,j,y = Is the quantity of fuel type i combusted in process j during the year y (mass or volume

unit/yr);

COEFi,y = Is the CO2 emission coefficient of fuel type i in year y (tCO2/mass or volume unit)

i = Are the fuel types combusted in process j during the year y

The CO2 emission coefficient COEFi,y can be calculated using one of the following two Options, depending

on the availability of data on the fossil fuel type i, as follows:

UNFCCC/CCNUCC

CDM – Executive Board EB 41

Report

Annex 11

Page 2

Option A: The CO2 emission coefficient COEFi,y is calculated based on the chemical composition of the

fossil fuel type i, using the following approach:

If FCi,j,y is measured in a mass unit: (2) 44/12wCOEF yi,C,yi, ×=

If FCi,j,y is measured in a volume unit: (3) 44/12wCOEF yi,yi,C,yi, ×ρ×=

Where:

COEFi,y = Is the CO2 emission coefficient of fuel type i (tCO2/mass or volume unit);

wC,i,y = Is the weighted average mass fraction of carbon in fuel type i in year y

(tC/mass unit of the fuel);

ρi,y = Is the weighted average density of fuel type i in year y (mass unit/volume unit

of the fuel)

i = Are the fuel types combusted in process j during the year y

Option B: The CO2 emission coefficient COEFi,y is calculated based on net calorific value and CO2

emission factor of the fuel type i, as follows:

yi,CO2,yi,yi, EFNCVCOEF ×= (4)

Where:

COEFi,y = Is the CO2 emission coefficient of fuel type i in year y (tCO2/mass or volume

unit)

NCVi,y = Is the weighted average net calorific value of the fuel type i in year y

(GJ/mass or volume unit)

EFCO2,i,y = Is the weighted average CO2 emission factor of fuel type i in year y (tCO2/GJ)

i = Are the fuel types combusted in process j during the year y

Option A should be the preferred approach, if the necessary data is available.

III. MONITORING METHODOLOGY PROCEDURE

Monitoring procedures

Describe and specify in the CDM-PDD all monitoring procedures, including the type of measurement

instrumentation used, the responsibilities for monitoring and QA/QC procedures that will be applied. Where

the methodology provides different options (e.g. use of default values or on-site measurements), specify

which option will be used. Meters should be installed, maintained and calibrated according to equipment

manufacturer instructions and be in line with national standards, or, if these are not available, international

standards (e.g. IEC, ISO).

All data collected as part of monitoring should be archived electronically and be kept at least for 2 years

after the end of the last crediting period. 100% of the data should be monitored if not indicated differently in

the comments in the tables below.

UNFCCC/CCNUCC

CDM – Executive Board EB 41

Report

Annex 11

Page 3

Data and parameters monitored

Data / parameter: FCi,j,y

Data unit: Mass or volume unit per year (e.g. ton/yr or m3/yr)

Description: Quantity of fuel type i combusted in process j during the year y

Source of data: Onsite measurements

Measurement

procedures (if any): • Use either mass or volume meters. In cases where fuel is supplied from

small daily tanks, rulers can be used to determine mass or volume of the

fuel consumed, with the following conditions: The ruler gauge must be

part of the daily tank and calibrated at least once a year and have a book

of control for recording the measurements (on a daily basis or per shift);

• Accessories such as transducers, sonar and piezoelectronic devices are

accepted if they are properly calibrated with the ruler gauge and receiving

a reasonable maintenance;

• In case of daily tanks with pre-heaters for heavy oil, the calibration will

be made with the system at typical operational conditions.

Monitoring

frequency:

Continuously

QA/QC procedures: The consistency of metered fuel consumption quantities should be cross-checked by

an annual energy balance that is based on purchased quantities and stock changes.

Where the purchased fuel invoices can be identified specifically for the CDM

project, the metered fuel consumption quantities should also be cross-checked with

available purchase invoices from the financial records.

Any comment: -

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UNFCCC/CCNUCCCDM–ExecutiveBoardEB41ReportAnnex11Page1Methodologicaltool“TooltocalculateprojectorleakageCO2emissionsfromfossilfuelcombustion”(Version02)I.SCOPE,APPLICABILITYANDPARAMETERSScopeandapplicabilityThistoolprovidesprocedurestocalculateprojectand/orleakageCO2emissionsfromthecombustionoffossilfuels.ItcanbeusedincaseswhereCO2emissionsfromfossilfuelcombustionarecalculatedbasedonthequantityoffuelcombustedanditsproperties.Methodologiesusingthistoolshouldspecifytowhichcombustionprocessjthistoolisbeingapplied.ParametersThistoolprovidesprocedurestodeterminethefollowingparameters:ParameterSIUnitDescriptionPEFC,j,ytCO2/yrCO2emissionsfromfossilfuelcombustioninprocessjduringtheyearyII.BASELINEMETHODOLOGYPROCEDURECO2emissionsfromfossilfuelcombustioninprocessjarecalculatedbasedonthequantityoffuelscombustedandtheCO2emissioncoefficientofthosefuels,asfollows:∑×=iyi,yj,i,yj,FC,COEFFCPE(1)Where:PEFC,j,y=AretheCO2emissionsfromfossilfuelcombustioninprocessjduringtheyeary(tCO2/yr);FCi,j,y=Isthequantityoffueltypeicombustedinprocessjduringtheyeary(massorvolumeunit/yr);COEFi,y=IstheCO2emissioncoefficientoffueltypeiinyeary(tCO2/massorvolumeunit)i=ArethefueltypescombustedinprocessjduringtheyearyTheCO2emissioncoefficientCOEFi,ycanbecalculatedusingoneofthefollowingtwoOptions,dependingontheavailabilityofdataonthefossilfueltypei,asfollows:UNFCCC/CCNUCCCDM–ExecutiveBoardEB41ReportAnnex11Page2OptionA:TheCO2emissioncoefficientCOEFi,yiscalculatedbasedonthechemicalcompositionofthefossilfueltypei,usingthefollowingapproach:IfFCi,j,yismeasuredinamassunit:(2)44/12wCOEFyi,C,yi,×=IfFCi,j,yismeasuredinavolumeunit:(3)44/12wCOEFyi,yi,C,yi,×ρ×=Where:COEFi,y=IstheCO2emissioncoefficientoffueltypei(tCO2/massorvolumeunit);wC,i,y=Istheweightedaveragemassfractionofcarboninfueltypeiinyeary(tC/massunitofthefuel);ρi,y=Istheweightedaveragedensityoffueltypeiinyeary(massunit/volumeunitofthefuel)i=ArethefueltypescombustedinprocessjduringtheyearyOptionB:TheCO2emissioncoefficientCOEFi,yiscalculatedbasedonnetcalorificvalueandCO2emissionfactorofthefueltypei,asfollows:yi,CO2,yi,yi,EFNCVCOEF×=(4)Where:COEFi,y=IstheCO2emissioncoefficientoffueltypeiinyeary(tCO2/massorvolumeunit)NCVi,y=Istheweightedaveragenetcalorificvalueofthefueltypeiinyeary(GJ/massorvolumeunit)EFCO2,i,y=IstheweightedaverageCO2emissionfactoroffueltypeiinyeary(tCO2/GJ)i=ArethefueltypescombustedinprocessjduringtheyearyOptionAshouldbethepreferredapproach,ifthenecessarydataisavailable.III.MONITORINGMETHODOLOGYPROCEDUREMonitoringproceduresDescribeandspecifyintheCDM-PDDallmonitoringprocedures,includingthetypeofmeasurementinstrumentationused,theresponsibilitiesformonitoringandQA/QCproceduresthatwillbeapplied.Wherethemethodologyprovidesdifferentoptions(e.g.useofdefaultvaluesoron-sitemeasurements),specifywhichoptionwillbeused.Metersshouldbeinstalled,maintainedandcalibratedaccordingtoequipmentmanufacturerinstructionsandbeinlinewithnationalstandards,or,ifthesearenotavailable,internationalstandards(e.g.IEC,ISO).Alldatacollectedaspartofmonitoringshouldbearchivedelectronicallyandbekeptatleastfor2yearsaftertheendofthelastcreditingperiod.100%ofthedatashouldbemonitoredifnotindicateddifferentlyinthecommentsinthetablesbelow.UNFCCC/CCNUCCCDM–ExecutiveBoardEB41ReportAnnex11Page3DataandparametersmonitoredData/parameter:FCi,j,yDataunit:Massorvolumeunitperyear(e.g.ton/yrorm3/yr)Description:QuantityoffueltypeicombustedinprocessjduringtheyearySourceofdata:OnsitemeasurementsMeasurementprocedures(ifany):•Useeithermassorvolumemeters.Incaseswherefuelissuppliedfromsmalldailytanks,rulerscanbeusedtodeterminemassorvolumeofthefuelconsumed,withthefollowingconditions:Therulergaugemustbepartofthedailytankandcalibratedatleastonceayearandhaveabookofcontrolforrecordingthemeasurements(onadailybasisorpershift);•Accessoriessuchastransducers,sonarandpiezoelectronicdevicesareacceptediftheyareproperlycalibratedwiththerulergaugeandreceivingareasonablemaintenance;•Incaseofdailytankswithpre-heatersforheavyoil,thecalibrationwillbemadewiththesystemattypicaloperationalconditions.Monitoringfrequency:ContinuouslyQA/QCprocedures:Theconsistencyofmeteredfuelconsumptionquantitiesshouldbecross-checkedbyanannualenergybalancethatisbasedonpurchasedquantitiesandstockchanges.WherethepurchasedfuelinvoicescanbeidentifiedspecificallyfortheCDMproject,themeteredfuelconsumptionquantitiesshouldalsobecross-checkedwithavailablepurchaseinvoicesfromthefinancialrecords.Anycomment:-UNFCCC/CCNUCCCDM–ExecutiveBoardEB41ReportAnnex11Page4Data/parameter:wC,i,yDataunit:tC/massunitofthefuelDescription:WeightedaveragemassfractionofcarboninfueltypeiinyearySourceofdata:Thefollowingdatasourcesmaybeusediftherelevantconditionsapply:DatasourceConditionsforusingthedatasourcea)ValuesprovidedbythefuelsupplierininvoicesThisisthepreferredsourceb)MeasurementsbytheprojectparticipantsIfa)isnotavailableMeasurementprocedures(ifany):MeasurementsshouldbeundertakeninlinewithnationalorinternationalfuelstandardsMonitoringfrequency:Themassfractionofcarbonshouldbeobtainedforeachfueldelivery,fromwhichweightedaverageannualvaluesshouldbecalculatedQA/QCprocedures:Verifyifthevaluesundera)andb)arewithintheuncertaintyrangeoftheIPCCdefaultvaluesasprovidedinTable1.2,Vol.2ofthe2006IPCCGuidelines.Ifthevaluesfallbelowthisrangecollectadditionalinformationfromthetestinglaboratorytojustifytheoutcomeorconductadditionalmeasurements.Thelaboratoriesinb)shouldhaveISO17025accreditationorjustifythattheycancomplywithsimilarqualitystandards.Anycomment:ApplicablewhereOptionAisusedUNFCCC/CCNUCCCDM–ExecutiveBoardEB41ReportAnnex11Page5Data/parameter:ρi,yDataunit:Massunit/volumeunitDescription:WeightedaveragedensityoffueltypeiinyearySourceofdata:Thefollowingdatasourcesmaybeusediftherelevantconditionsapply:DatasourceConditionsforusingthedatasourcea)ValuesprovidedbythefuelsupplierininvoicesThisisthepreferredsourceb)MeasurementsbytheprojectparticipantsIfa)isnotavailablec)RegionalornationaldefaultvaluesIfa)isnotavailableThesesourcescanonlybeusedforliquidfuelsandshouldbebasedonwell-documented,reliablesources(suchasnationalenergybalances).Measurementprocedures(ifany):MeasurementsshouldbeundertakeninlinewithnationalorinternationalfuelstandardsMonitoringfrequency:Thedensityofthefuelshouldbeobtainedforeachfueldelivery,fromwhichweightedaverageannualvaluesshouldbecalculatedQA/QCprocedures:Anycomment:ApplicablewhereOptionAisusedandwhereFCi.j.yismeasuredinavolumeunit.PreferablythesamedatasourceshouldbeusedforwC,i,yandρi,y.UNFCCC/CCNUCCCDM–ExecutiveBoardEB41ReportAnnex11Page6Data/parameter:NCVi,yDataunit:GJpermassorvolumeunit(e.g.GJ/m³,GJ/ton)Description:WeightedaveragenetcalorificvalueoffueltypeiinyearySourceofdata:Thefollowingdatasourcesmaybeusediftherelevantconditionsapply:DatasourceConditionsforusingthedatasourcea)ValuesprovidedbythefuelsupplierininvoicesThisisthepreferredsourceifthecarbonfractionofthefuelisnotprovided(OptionA)b)MeasurementsbytheprojectparticipantsIfa)isnotavailablec)RegionalornationaldefaultvaluesIfa)isnotavailableThesesourcescanonlybeusedforliquidfuelsandshouldbebasedonwelldocumented,reliablesources(suchasnationalenergybalances).d)IPCCdefaultvaluesattheupperlimitoftheuncertaintyata95%confidenceintervalasprovidedinTable1.2ofChapter1ofVol.2(Energy)ofthe2006IPCCGuidelinesonNationalGHGInventoriesIfa)isnotavailableMeasurementprocedures(ifany):Fora)andb):MeasurementsshouldbeundertakeninlinewithnationalorinternationalfuelstandardsMonitoringfrequency:Fora)andb):TheNCVshouldbeobtainedforeachfueldelivery,fromwhichweightedaverageannualvaluesshouldbecalculatedForc):ReviewappropriatenessofthevaluesannuallyFord):AnyfuturerevisionoftheIPCCGuidelinesshouldbetakenintoaccountQA/QCprocedures:Verifyifthevaluesundera),b)andc)arewithintheuncertaintyrangeoftheIPCCdefaultvaluesasprovidedinTable1.2,Vol.2ofthe2006IPCCGuidelines.Ifthevaluesfallbelowthisrangecollectadditionalinformationfromthetestinglaboratorytojustifytheoutcomeorconductadditionalmeasurements.Thelaboratoriesina),b)orc)shouldhaveISO17025accreditationorjustifythattheycancomplywithsimilarqualitystandards.Anycomment:ApplicablewhereOptionBisusedUNFCCC/CCNUCCCDM–ExecutiveBoardEB41ReportAnnex11Page7Data/parameter:EFCO2,i,yDataunit:tCO2/GJDescription:WeightedaverageCO2emissionfactoroffueltypeiinyearySourceofdata:Thefollowingdatasourcesmaybeusediftherelevantconditionsapply:DatasourceConditionsforusingthedatasourcea)ValuesprovidedbythefuelsupplierininvoicesThisisthepreferredsourceb)MeasurementsbytheprojectparticipantsIfa)isnotavailablec)RegionalornationaldefaultvaluesIfa)isnotavailableThesesourcescanonlybeusedforliquidfuelsandshouldbebasedonwell-documented,reliablesources(suchasnationalenergybalances)d)IPCCdefaultvaluesattheupperlimitoftheuncertaintyata95%confidenceintervalasprovidedintable1.4ofChapter1ofVol.2(Energy)ofthe2006IPCCGuidelinesonNationalGHGInventoriesIfa)isnotavailableMeasurementprocedures(ifany):Fora)andb):MeasurementsshouldbeundertakeninlinewithnationalorinternationalfuelstandardsMonitoringfrequency:Fora)andb):TheCO2emissionfactorshouldbeobtainedforeachfueldelivery,fromwhichweightedaverageannualvaluesshouldbecalculated.Forc):ReviewappropriatenessofthevaluesannuallyFord):AnyfuturerevisionoftheIPCCGuidelinesshouldbetakenintoaccountAnycomment:ApplicablewhereoptionBisused.Fora):IfthefuelsupplierdoesprovidetheNCVvalueandtheCO2emissionfactorontheinvoiceandthesetwovaluesarebasedonmeasurementsforthisspecificfuel,thisCO2factorshouldbeused.IfanothersourcefortheCO2emissionfactorisusedornoCO2emissionfactorisprovided,Optionsb),c)ord)shouldbeused.IV.REFERENCESANDANYOTHERINFORMATIONNotapplicable.-----UNFCCC/CCNUCCCDM–ExecutiveBoardEB41ReportAnnex11Page8HistoryofthedocumentVersionDateNatureofrevision(s)02EB41,Annex1102August2008ThetoolwasrevisedtoclarifythattheuseofrulersisanacceptablemeasurementmethodformonitoringFCi,j,y.01EB32,Annex922June2007Initialadoption.

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