JCM_TH_AM001_ver01.0
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Joint Crediting Mechanism Approved Methodology TH_AM001“Installation of Solar PV System”
A. Title of the methodology
Installation of Solar PV System, Ver 01.0

B. Terms and definitions
Terms

Definitions

Solar photovoltaic (PV) system

An electricity generation system which converts sunlight into
electricity by the use of photovoltaic (PV) modules. Thesystem also includes ancillary equipment such as inverters
required to change the electrical current from direct current(DC) to alternating current (AC).

C. Summary of the methodology
Items
GHGemissionSummary
reduction Displacement of grid electricity and/or captive electricity using

measuresfossil fuel as power source by installation and operation of thesolar PV system(s)Calculationofreference Reference emissions are calculated on the basis of the ACemissions

output of the solar PV system(s) multiplied by the conservativeemission factor of grid electricity and/or captive electricity.

Calculationofproject Project emissions are the emissions from the solar PV system(s),emissionswhich are assumed to be zero.

Monitoring parameters

The quantity of the electricity generated by the project solar PVsystem(s)D. Eligibility criteria
This methodology is applicable to projects that satisfy all of the following criteria.
Criterion 1

The project installs solar PV system(s).

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Criterion 2

The solar PV system is connected to the internal power grid of the project site
and/or to the grid for displacing grid electricity and/or captive electricity at theproject site.

Criterion 3

The PV modules have obtained a certification of design qualifications (IEC61215, IEC 61646 or IEC 62108) and safety qualification (IEC 61730-1 and IEC61730-2).

Criterion 4

The equipment to monitor output power of the solar PV system and irradiance isinstalled at the project site.

E. Emission Sources and GHG types
Reference emissions
Emission sources

GHG types

Consumption of grid and/or captive electricity

CO2

Project emissions
Emission sources

GHG types

Generation of electricity from solar PV system(s)N/AF. Establishment and calculation of reference emissions
F.1. Establishment of reference emissions
The emission factor of the Thai grid published by the Thailand Greenhouse Gas Management
Organization (TGO) is 0.5661 tCO2/MWh (combined margin, 2014).
Most of the grid power is derived from natural gas in Thailand (around 70%). The generation
efficiency of major natural gas-fired power plants in Thailand ranges from 41 to 61%. Theemission factors of these plants are in the range of 0.477 to 0.319 tCO2/MWh.
Considering that it is difficult to identify which of the natural gas-fired power plants isdisplaced by solar PV system(s) installed in this project, the grid emission factor is establishedby assuming that the most efficient natural gas-fired power plant in Thailand is displaced inconservative manner, which will lead to ensuring net emission reductions. The grid emission
factor is set to be 0.319 tCO2/MWh which corresponds to the most efficient natural gas-fired
power plant in Thailand (generation efficiency: 61.2%).

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F.2. Calculation of reference emissions

RE p = å EG i,p ´ EFREi

REp: Reference emissions during the period p [tCO2/p]

EGi,p: Quantity of the electricity generated by the project solar PV system i during theperiod p [MWh/p]

EFRE: Reference CO2 emission factor of grid electricity and/or captive electricity[tCO2/MWh]

G. Calculation of project emissions
PEp = 0PEp

: Project emissions during the period p [tCO2/p]

H. Calculation of emissions reductions
ERp = REp − PEp= REp
ERp: Emission reductions during the period p [tCO2/p]

REp: Reference emissions during the period p [tCO2/p]

PEp: 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
EFRE

Description of dataSource

Reference CO2 emission factor of grid and/orAdditional information

captive electricity, calculated based on theThe default emission factor is3

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power generation efficiency of 61.2% using

derived from the result of thenatural gas as the power source.

survey on the generation

The default value for EFRE is set to be 0.319

efficiency of major natural

tCO2/MWh.

gas-fired power plants inThailand. The default value
should be revised if necessary
from survey result which is
conducted by the JC or project
participants.

History of the document
Version01.0

Date
23 August 2016

Contents revised
Decision by the Joint Committee.
Initial approval.

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