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Reports of MRV Demonstration Studies: FY2012

Title of Study MRV Demonstration Study using a model project
Energy Savings through Building Energy Management System (BEMS)
FYFY 2012
Main Implementing EntityPricewaterhouseCoopers Co., Ltd.
Study PartnersDepartment of Alternative Energy Development and Energy (DEDE), PricewaterhouseCoopers Thailand
Azbil Corporation
Mitsubishi UFJ Lease & Finance Company Limited
Bright Management Consulting Co.,Ltd
Location of Project/ActivityThailand (Bangkok)
Category of Project/ActivityEnergy Efficiency Improvement
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/ActivityThe objective of the project is to develop a measurement, reporting and verification approach for total energy consumption of a commercial building using a Building and Energy Management System (BEMS) and manage the operation of energy-consuming equipment to reduce both energy consumption and CO2 emissions. Using past energy consumption data as a baseline, data analysis allows identification of possible reductions in CO2 emission through an assessment of potential energy conservation measures. These are subsequently used to establish default values. Actual data on CO2 emissions following introduction of a BEMS is collected and evaluated, based on total building energy consumption. In Thailand's metropolitan Bangkok area, this project is targeting four categories of building: hotels, offices, hospitals, and shopping centers. Activities under this project started in 2012 following on from the original study started in 2011. The project aims to achieve reductions in emissions in 12 cases achieving a total reduction of 11,538t CO2/yr.
Eligibility CriteriaCase 1:
BEMS shall be installed into existing buildings
Case 2:
Reduction of energy consumption shall be made by the operation and control of equipment and facilities by BEMS according to the indoor environment, not just upgrading equipments
Case 3:
The result of performance improvement shall be reported regularly (at least once every six months) by BEMS provider to beneficiaries of energy saving e.g. building owners after the introduction of BEMS, and this is secured by contracts
Reference Scenario and Project/Activity BoundaryWith regard to reference scenarios, the following 2 scenarios are used:
  • Scenario 1: it is Business as Usual (BaU) with the current situation continuing with no introduction of BEMS
  • Scenario 2: buildings become highly efficient as a result of non-BEMS effects

The rationale behind Scenario 1 is that there are almost no cases of BEMS introduction in Thailand and the current situation, where there are limited economic incentives for BEMS introduction, is assumed to continue.

Scenario 2 is set based on the assumption that buildings will be more efficient than BaU as a result of non-BEMS effects. This scenario is based on the "Energy Efficiency Development Plan (2011-2030)" published by Ministry of Energy in Thailand.
Calculation Method Options
Default Values set in MethodologyWorking from the assumption that the statistical analysis of default values results in the selection of conservative values, an assessment of commercial building energy efficiency was performed to understand the status of facility operation and energy consumption in Thailand. The results of this assessment were used in the determination of default values. In Thailand, there are a limited number of cases of BEMS introduction with no cases of BEMS being installed for a long period of time. As a result, the assessment tries to define quantitative and manageable defaults (percentage efficiency improvement of energy usage) by collecting information on past energy consumption of the whole building and detailed information on the building operation with an analysis of energy conservation following introduction of the BEMS.

The effects of introduction a BEMS include energy savings resulting from operational improvements (intangible) and from automatic control and upgrade of energy consuming equipment (tangible). Operational improvements result from identification of energy saving opportunities and implementation of appropriate measures to realize these opportunities. Data output from the BEMS facilitates identification of aspects of energy consumption and facility operations that have not been previously been recognized and areas where operational performance can be improved leading to identification of energy saving opportunities. Automatic control of equipment enables the optimal operation of energy-consuming equipment resulting in energy saving. Additionally, energy saving benefits can be realized with the replacement of existing equipment with higher efficiency models.
Monitoring MethodEnergy Usage of a Building after the Introduction of BEMS
Result of Monitoring ActivityTo create monitoring reports and verify the trial MRV, energy consumption monitoring was performed at four sites where BEMS's have been installed. The building owners or facility managers were asked to collect data after introduction of the BEMS.

Table: Monitored Buildings
Monitoring Period
Building AHotelApril 1, 2012 to October 31, 2012 (7 months)
Building BCommercial FacilitiesMay 1, 2011 to December 31, 2011 (8 months)
Building COfficeJanuary 31, 2010 to January 31, 2011 (12 months)
Building DCommercial FacilitiesJanuary 1, 2009 to November 31, 2011 (23 months)
GHG Emissions and its ReductionsTable: GHG Emission and Reduction
Total Floor Area (m2)
Reference Emission (tCO2)
Reduction in Emission (tCO2)
Percentage Reduction in Emission by BEMS
Building A
Implemented at 10.5%
Building B
Implemented at 10.5%
Building C
Implemented at 1.1%
Building D
Implemented at 10.8%
Method and Result of VerificationTable: Results of Verification
Verified Reduction in Emission [tCO2]
Results of Verification
Building A
1st Verification: The calculation is appropriate. It was pointed out that the source material for the individual technologies of the introduced BEMS was not clearly written.
Building B
1st Verification: Data was not properly entered or calculated. Modification was requested.
2nd Verification: Calculation was appropriate. CAR was resolved by correct data entry.
Building C
1st Verification: Calculation was not performed for a suitable monitoring period. Modification was requested.
2nd Verification: Calculation was appropriate. CAR was resolved through correct data entry. It was pointed out that there was lack of documentation justifying the introduction of individual technologies for the BEMS and information on the precision of actual LPG measurement.
Building D
1st Verification: Data was not properly entered or calculated. Modification was requested.
2nd Verification: Calculation was appropriate. CAR was resolved through correct data entry.
Environmental ImpactsThe environmental impacts of the manufacture of BEMS systems are considered to be lower than other products. Similarly during the overall life cycle of a BEMS, the potential for increased environmental impacts e.g. release of hazardous chemicals, pollution etc is considered to be very low.
Promotion of Japanese TechnologyThree key requirements are identified to support the successful introduction of Japanese technology: Strong business relationships with real-estate agents, developers, and construction consultants to gain entry to the local market; raising the capacity of Japanese manufacturers so that low-cost financing schemes becoming a viable option for the local market, and training BEMS operators.
Sustainable Development in Host CountryIntroduction of BEMS acts as a driver to for reduction in peak power consumption, supports energy efficiency related technology transfer and human resource development, and contributes to reducing environmental pollution. These benefits are in line with the current Thai mid-term development policy and strategy.

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