JCM_ID_AM016_ver01.0
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Joint Crediting Mechanism Approved Methodology ID_AM016“Installation of gas engine cogeneration system to supply electricity and heat to facility”
A. Title of the methodology
Installation of gas engine cogeneration system to supply electricity and heat to facility, Version
01.0

B. Terms and definitions
Terms

Definitions

Cogeneration System (CGS)

A system that consists of power generator(s) and boiler(s)supplying both electricity and heat, recovering waste heatexhausted by the power generator(s). The power generator isa gas engine in this methodology.

Facility

A cluster of buildings and/or plants (or building/plant itself)
to which electricity and heat generated by CGS is supplied.

Power Generation Efficiency

Net quantity of electricity generated per quantity of energy
contained in fuel fired in the power generator.

Boiler Efficiency

Net quantity of heat generated per quantity of energy
contained in fuel fired in the boiler.

C. Summary of the methodology
Items
GHG

emissionmeasures

Summary
reduction Electricity and heat generated by CGS(s) installed in the project
facility(ies) substitutes all or part of grid and/or captiveelectricity consumed and heat generated by fossil fuel, whichleads to efficient energy use of the facility(ies) and in turn GHG
emission reductions.

Calculation
emissions

ofreference Reference emissions are CO2 emissions from the use of grid
and/or captive electricity and heat generated by reference boiler
in the facility(ies), which are calculated based on: the amount ofelectricity consumption by the facility(ies) which is generated1

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by the CGS(s); the amount of heat consumption by thefacility(ies) which is generated by the CGS(s); reference boiler
efficiency; and CO2 emission factors for consumed electricity
and fossil fuel consumed by the reference boiler in thefacility(ies).
Calculationofproject Project emissions are CO2 emissions from the use of CGS(s),emissions

which are calculated based on: the amount of gas fuelconsumption by the CGS(s); net calorific value of gas fuelconsumed by the CGS(s); and CO2 emission factor for gas fuelconsumed by the CGS(s).

Monitoring parameters

 Amount of electricity consumption by the facility(ies) whichis generated by the CGS(s) [MWh/p]
 Amount of heat consumption by the facility(ies) which isgenerated by the CGS(s) [GJ/p] (Option 1)
 Amount of heat supply to the facility(ies) which is generated
by the CGS(s) [GJ/p] (Option 2)
 Number of days during the monitoring period [day/p](Option 2)
 Amount of gas fuel consumption by the CGS(s) [Nm3/p]

D. Eligibility criteria
This methodology is applicable to projects that satisfy all of the following criteria.
Criterion 1

Gas engine CGS(s) is installed and supplies electricity and heat to facility(ies).

Criterion 2

The power generation efficiency of the CGS(s) stated in catalogs or otherinformation prepared by its manufacturer is equal to or greater than the thresholdvalue in the following table corresponding to the electrical output of CGS(s)installed.
Electrical output

Efficiency thresholdx < 2 [MW]40 [%]

2 [MW] ≤ x

47 [%]

E. Emission Sources and GHG types
Reference emissions

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Emission sources

GHG types

Electricity consumed in facility(ies)

CO2Fossil fuel to generate heat in facility(ies)

CO2

Project emissions
Emission sources

GHG types

Gas fuel consumption by CGS(s)CO2

F. Establishment and calculation of reference emissions
F.1. Establishment of reference emissions
Reference emissions are calculated based on: the amount of electricity consumption by thefacility(ies) which is generated by the CGS(s); the amount of heat consumption by thefacility(ies) which is generated by the CGS(s); reference boiler efficiency; and CO2 emission
factors for consumed electricity and fossil fuel consumed by the reference boiler in thefacility(ies).
A default value for the reference boiler efficiency is conservatively set ex ante to 89.0 [%] so as
to ensure net emission reductions.
F.2. Calculation of reference emissionsࡾࡱ࢖=෍ ෍ ࡾࡱࢋ࢒ࢋࢉ,࢏,࢐,࢖ + ෍ ෍ ࡾࡱࢎࢋࢇ࢚,࢏,࢐,࢖=෍ ෍൫ࡱࡳ࢏,࢐,࢖ × ࡱࡲࢋ࢒ࢋࢉ,ࡾࡱ,࢐ ൯ + ෍ ൭෍ ࡴࡳ࢏,࢐,࢖ ×࢏࢏࢐࢐࢏࢐࢐࢏૚૙૙
× ࡱࡲࢌ࢛ࢋ࢒,ࡾࡱ,࢐ ൱ࣁࡾࡱWhereܴ‫ܧ‬௣ܴ‫ܧ‬௘௟௘௖,௜,௝,௣ܴ‫ܧ‬௛௘௔௧,௜,௝,௣‫ܩܧ‬௜,௝,௣‫ܨܧ‬௘௟௘௖,ோா,௝

: Reference emissions during the period p [tCO2/p]: Reference emissions for electricity consumption by the facility j which isgenerated by the CGS i during the period p [tCO2/p]: Reference emissions for heat consumption by the facility j which isgenerated by the CGS i during the period p [tCO2/p]: Amount of electricity consumption by the facility j which is generated by
the CGS i during the period p [MWh/p]: CO2 emission factor for consumed electricity in the facility j [tCO2/MWh]3

JCM_ID_AM016_ver01.0
Sectoral scope: 01‫ܩܪ‬௜,௝,௣

: Amount of heat consumption by the facility j which is generated by theCGS i during the period p [GJ/p]

ߟோா: Reference boiler efficiency [%]‫ܨܧ‬௙௨௘௟,ோா,௝

: CO2 emission factor for fossil fuel consumed by the reference boiler in thefacility j [tCO2/GJ]݅: Identification number for the CGS݆: Identification number for the facility to which electricity and heat generated
by the CGS i is supplied<Monitoring Options for ࡴࡳ࢏,࢐,࢖>Project participants may select either of the following two monitoring options to obtain a valuefor ‫ܩܪ‬௜,௝,௣ .

Option 1:

Monitor the amount of heat consumption by the facility j which is generated
by the CGS i during the period p [GJ/p]

Option 2:

Monitor the amount of heat supply to the facility j which is generated by theCGS i during the period p [GJ/p]

Option 1 can be selected when the project participants monitor the amount of heat“consumption”.
Option 2 can be selected when the project participants monitor the amount of heat “supply”,
instead of “consumption”, and there has been existing boiler(s) generating steam and/or hot
water and supplying to the facility prior to the implementation of the JCM project. In thisoption, no emission reductions can be claimed from the amount of heat generated by the CGS iand supplied to the facility j which exceeds the maximum capacity of heat generation by theexisting boiler(s) supplying to the facility j. The formula written below is applied.
෢ ࢑,࢐,࢖ ൩෍ ࡴࡳ࢏,࢐,࢖ = ‫ ܖܑܕ‬൥ ෍ ࡴࡳࡿ࢏,࢐,࢖ , ෍ ࡴࡳ࢏෢ ࢑,࢐,࢖ =ࡴࡳ࢏, for any facility j࢑ࡴࡳ࡯࢑ × ૛૝ × ࡰࢅࡿ࢖ × ૛, ૛૞ૠ⎧૚૙૟⎪⎨ ࡴࡳ࡯࢑ × ૛૝ × ࡰࢅࡿ࢖ × ૜. ૟⎪
⎩
૚૙૜

Where

4, for steam boiler, for hot water boiler

JCM_ID_AM016_ver01.0
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: Amount of heat consumption by the facility j which is generated by theCGS i during the period p [GJ/p]‫ܵܩܪ‬௜,௝,௣

: Amount of heat supply to the facility j which is generated by the CGS iduring the period p [GJ/p]෢ ௞,௝,௣
‫ܩܪ‬: Maximum capacity of heat generation by the existing boiler k
supplying to the facility j during the period p [GJ/p]‫݇ܥܩܪ‬: Heat generative capacity of the existing steam boiler k [kg/h] or hot
water boiler k [kW]‫ܻܵܦ‬௣

: Number of days during the period p [day/p]݅: Identification number for the CGS݆: Identification number for the facility to which electricity and heatgenerated by the CGS i is supplied݇: Identification number for the existing boiler which supplies steam or
hot water to the facility jG. Calculation of project emissionsࡼࡱ࢖=෍ ࡼࡱ࢏,࢖

=෍൫ࡲ࡯࢏,࢖ × ࡺ࡯ࢂ࢏ × ૚૙ି૜ × ࡱࡲࢌ࢛ࢋ࢒,ࡼࡶ,࢏ ൯࢏࢏Whereܲ‫ܧ‬௣: Project emissions during the period p [tCO2/p]ܲ‫ܧ‬௜,௣

: Project emissions for the CGS i during the period p [tCO2/p]ܰ‫ܸܥ‬௜

: Net calorific value of gas fuel consumed by the CGS i [MJ/Nm3]‫ܥܨ‬௜,௣

: Amount of gas fuel consumption by the CGS i during the period p [Nm3/p]‫ܨܧ‬௙௨௘௟,௉௃,௜݅: CO2 emission factor for gas fuel consumed by the CGS i [tCO2/GJ]: Identification number for the CGS

H. Calculation of emissions reductionsࡱࡾ࢖=ࡾࡱ࢖ − ࡼࡱ࢖5

JCM_ID_AM016_ver01.0
Sectoral scope: 01Where‫ܴܧ‬௣

ܴ‫ܧ‬௣

ܲ‫ܧ‬௣

: Emission reductions during the period p[tCO2/p]: Reference emissions during the period p [tCO2/p]: Project emissions during the period p [tCO2/p]

I. Data and parameters fixed ex ante
The source of each data and parameter fixed ex ante is listed as below.
Parameter
ߟோாDescription of data

SourceReference boiler efficiency.

Value derived from the result ofDefault value is set to 89.0 [%].

survey. The default value, 89.0[%], should be revised ifnecessary.

ܰ‫ܸܥ‬௜

Net calorific value of gas fuel consumed by
3

the CGS i [MJ/Nm ].

In the order of preference:a) value provided by fuelsupplier;b) value measured by theproject participants;c) regional or national default
value; ord) IPCC default value

provided in table 1.2 ofCh.1 Vol.2 of 2006 IPCC
Guidelines on National
GHG Inventories. Upper
value is applied.
‫ܨܧ‬௘௟௘௖,ோா,௝

CO2 emission factor for consumed electricity [Grid electricity]in the facility j [tCO2/MWh].

The data is sourced from
“Emission Factors ofWhen

thefacility consumes

only grid Electricity Interconnection

electricity or captive electricity, the project Systems”, National Committee
participant applies the CO2 emission factor on Clean Development
respectively.
When

theMechanism (Indonesian DNAfacility

consumes

both grid for CDM), based on data

electricity and captive electricity, the project obtained by Directorate
participant applies the CO2 emission factor General of Electricity, Ministry6

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with lower value.

of Energy and Mineral
Resources, Indonesia, unlessotherwise instructed by the[CO2 emission factor]

For grid electricity: the most recent value Joint Committee.
available from the source stated in this table atthe time of validation.

[Captive electricity]

For captive electricity: 0.8* [tCO2/MWh]

CDM approved small scale*The most recent value available from CDM

methodology AMS-I.A.

approved small scale methodology AMS-I.A
at the time of validation is applied.
‫ܨܧ‬௙௨௘௟,ோா,௝

CO2 emission factor for fossil fuel consumed In the order of preference:by the reference boiler in the facility j a) value provided by fuelsupplier;[tCO2/GJ].

CO2 emission factor of natural gas is applied b) value measured by thein this methodology in a conservative manner.

project participants;c) regional or national default
value; ord) IPCC default value
provided in table 1.4 of
Ch.1 Vol.2 of 2006 IPCC
Guidelines on National
GHG Inventories. Lower
value is applied.

‫ܨܧ‬௙௨௘௟,௉௃,௜

CO2 emission factor for gas fuel consumed byIn order of preference:

the CGS i [tCO2/GJ].

a) value provided by fuelsupplier;b) value measured by theproject participants;c) regional or national default
value; ord) IPCC default value

provided in table 1.4 of
Ch.1 Vol.2 of 2006 IPCC
Guidelines on National
GHG Inventories. Highervalue is applied.
‫ܥܩܪ‬௞

Heat generative capacity of the existing steam Catalogs, specifications

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JCM_ID_AM016_ver01.0
Sectoral scope: 01boiler k [kg/h] or hot water boiler k [kW]. The prepared for the quotation orvalue prepared by manufacturer is applied in factory acceptance test data by
the use of Option 2 only.

manufacturer.

Equivalent evaporation is used for steam
boilers, and rated thermal output for hot water
boilers.
History of the document
Version01.0

Date
10 July 2018

Contents revised
JC8, Annex 5
Initial approval.

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