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Method of Estimating CO2 Reduction by comprehensive building management services

We estimated the CO2 reduction achieved by ｃomprehensive building management services for existing buildings based on the following.

1. We estimated the CO2 reduction in 2023 by building maintenance management services.
2. We also estimated the amount of CO2 reduction if no Azbil Corporation products or solutions were used at our customers’ sites.
3. We used our system database to calculate the total floor area of sites and to categorize the use of the space.
4. We used the energy consumption data (in MJ/m²/year) for each building usage type from the “Data-base for Energy Consumption of Commercial Building (DECC)” maintained by the Japan Sustainable Building Consortium (JSBC).
   We converted the above energy consumption units into kg-CO2/m²/year using CO2 emission factors for electricity and heat (fuel).
   In addition, we used fuel-electricity ratios of 6:4, 7:3, and 8:2 for hospitals and medical facilities, hotels, and others, respectively, based on data from the Energy Conservation Center, Japan.
5. We used the calorific value equivalents for electricity consumption and CO2 emission factors for heat that are specified by Japan’s energy conservation legislation. For energy weighting of buildings by area, and for CO2 emission factors for electricity, we used adjusted factors for electricity utilities that are released by the Ministry of Environment every year.
6. The CO2 reduction rate is the actual value resulting from precise adjustment of the energy-saving controls that we installed at various remote maintenance service sites.

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