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Reports of MRV Demonstration Studies: FY2012

Title of Study MRV Demonstration Study using a model project
Bagasse-based Cogeneration at Sugar Mill
FYFY 2012
Main Implementing EntityMizuho Information & Research Institute, Inc.
Study PartnersDan Chang Bio-Energy Co., Ltd (DCB), The Institute of Applied Energy (IAE), Mizuho Corporate Bank (MHCB)
Location of Project/ActivityThailand (Suphanburi Province)
Category of Project/ActivityBiomass Utilisation
Study Report

Note: Preliminary drafts of MRV Methodology and Calculation Sheet are the result of the study. They have neither been officially approved, nor are guaranteed to be officially approved under the JCM/BOCM.
Description of Project/ActivityCO2 emission reduction project conducted in Dan Chang region, Suphanburi Province in Thailand, in partnership with Dan Chang Bio-Energy Company Limited (DCB) as local counterpart. The project under this study is the cogeneration using bagasse, operated by the DCB.

In this project, biomass residues (bagasse) generated from a sugar mill, operated by Mitr Phol Sugar Corporation, are utilized as fuel to replace grid electricity, in order to achieve GHG emission reductions (hereafter "Dan Chang Block 2 project"). In Dan Chang Block 2 project under this study, a 32MW cogeneration facility has been installed. As for electricity replacement as a major emission reduction effect, net electricity generation (= electricity to be sold to the grid) is estimated at approx. 150,000 MWh/yr with GHG emission reductions at 77,000tCO2/yr level.
Eligibility CriteriaCase 1:
    The project activity replaces electricity from grid or fossil fuel-based generator through introducing high-efficient facilities for electricity and heat supply using biomass residues which are equipped with any one of technologies as shown below ;
    • High-pressure boiler: Equipment Pressure Level 70 bar 500 degrees Celsius
    • High-efficient boiler: Boiler Efficiency 90%  
    • Fluidized-bed boiler
Case 2:
    The biomass residues used in the project are not used in other than the project.
Case 3:
    No biomass types other than biomass residues are used in this project plant.
Case 4:
    In case of co-combustion with fossil fuels, input amount of fossil fuels can be recorded.
    *For a case where input volume of fossil fuels into boilers and generators cannot be recorded, Case 4 can be met in such manner that fossil fuels purchased in a project site during the project period are considered as combusted to be estimated as project emissions.
Case 5:
    In case of co-combustion with fossil fuels, the amount of fossil fuels co-combustion does not exceed 80% of the total fuel fired on an energy basis.
Case 6:
    The biomass residues used in the project facility are not stored for more than one year.
Reference Scenario and Project/Activity Boundary●Boundary
    Boundaries for the MRV methodology developed in this study include:
    (1) all plants generating electricity and/or heat located at the project site,
    (2) all electricity generation plants with grid connection, and
    (3) means to transport biomass residues to the project site.
●Reference scenario
    This methodology is applicable to project activities for installation or replacement of biomass-based power generators and/or boilers. Reference scenarios for heat supply and electricity supply are defined as shown below.

    <Reference scenario for heat supply>
    Heat supply scenario 1: Heat demand on project site would be covered by high-efficiency fossil fuel-based boiler during a time period of project implementation.
    Heat supply scenario 2: Heat demand on project site would be covered by existing biomass-based boiler during a time period of project implementation.
    * In the case where there would be an existing biomass-based boiler in project site, "Heat supply scenario 1" should be chosen. If NOT, "Heat supply scenario 2" should be chosen.

    <Reference scenario for electricity supply>
    Electricity supply scenario 1: Electricity demand on project site would be covered by grid electricity during a time period of project implementation.  

    Electricity supply scenario 2: Electricity demand on project site would be covered by high-efficient fossil fuel-based generator during a time period of project implementation.

    *In the case where project site is connecting Thailand national grid, "Electricity supply scenario 1" should be chosen. If NOT, "Electricity supply scenario 2" should be chosen.
Calculation Method Options
  • Calculation options for emissions from electricity/heat supply
     -Conservative default values only can be used for calculation.
     -Calculation method diverges depending on a scenario applied.
  • Calculation options for emissions associated with transport of biomass residues
     -Basically, calculation can be done by using activity data only.
     -Activity data used for calculation can be selected from number of delivery, input of biomass residues and steam generation. In addition, default values are provided to be used for each calculation.
Default Values set in Methodology
  • Reference efficiency of fossil fuel-based boiler: 100%
    -conservative setting with the value of theoretical maximum efficiency.
  • Reference efficiency of electricity generation of fossil fuel-based electricity generating facilities: 50%
    -based on grid electricity generation efficiency in Thailand and various technological papers on electricity generation.
  • Average distance to transport biomass residues in return trip: 200km
    -based on hearing surveys to the local counterpart.
Monitoring Method
ParameterDescription E.g. of monitoring method
ELBio,yNet power supply from biomass residues in year yDirectly measurement continuously by electricity meter with aggregating data as appropriate
N y, kTotal trip number of biomass residues type k in year yRecord data from transport sales slip with aggregating data at least per month
FC PJ, y, fQuantity of fossil fuel type f fired in year y on-siteDirect measurement continuously by mass / weight meter or sales slip
ELPJ, grid, yQuantity of electricity purchased from grid in year yDirect measurement continuously by electricity meter or electricity purchased slip
Result of Monitoring ActivityMonitoring period: October 1 – 31, 2012

・Replacement of Electricity from Grid (MWh):10218.84
・Electricity purchased from Grid (MWh): 101.53
・Volume of diesel used (kL):74.571
GHG Emissions and its ReductionsEmission reductions during the monitoring period: 4,986 tCO2
    ER = BE – PE- Leakage
      = REelectricity - PEFF - PEEC
      = (5,224tCO2) - (186tCO2 ) - (52tCO2)
      = 4,986tCO2
Method and Result of VerificationSGS (Thailand) Ltd., a DOE under the CDM in Thailand, is commissioned as the verifier for this research, considering its experience of verification works on GHG emission reductions.
As a result of verification, 4,986tCO2 is recognized as emission reduction from implementation of the project activities under this study over the period from 1st to 31st of October, 2012.
Environmental ImpactsIntroduction and expansion of renewable energies will contribute to reduce emissions of environmental pollutants (NOx, SOx, wastewater, etc.) generated from fuel consumption for fossil fuel-fired electricity generation.
This project has been developed and operated after the screening of Thai Environmental Impact Assessment (EIA), and no major problem has occurred under the EIA. Therefore, implementation of this project activity would not cause any adverse impacts.
Promotion of Japanese TechnologyThere is a potential to introduce Japan's niche fluidized-bed boiler which has flexibility in raw materials, considering Thai current condition to use biomass residues.
Sustainable Development in Host CountryThis project will contribute to sustainable development in Thailand in terms of the following aspects:
  • emissions reductions of environmental pollutants (NOx, SOx, soot dust, etc.)
  • ease of fossil fuel dependence in power sector
  • support for Thai policy to promote renewable energies
  • improvement of economic efficiency through efficient utilization of abundant farming residues (bagasse).
  • creation and increase of local employment
  • stabilization of electricity supply

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