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Third-Party Verification

Method of Calculating Greenhouse Gas Emissions Data

Greenhouse gas emissions data are calculated as follows.

(1) Use of fuel at sites (Energy-induced CO2)Scope 1

  • The scope of calculation covers four manufacturing bases of Daikin Industries, Ltd., eight manufacturing subsidiaries in Japan, and 46 manufacturing subsidiaries overseas.
  • However, the following may not be included in calculation: newly consolidated bases, sites that are newly established and that don't yet have a data collection system in place, and sites whose emissions are negligible. For sites where data procurement is difficult, calculation is based on estimates of past data, for example.
  • Heat generation per unit, CO2 emissions coefficient: Based on Environmental Activity Evaluation Program (Eco-Action 21) (1998, Ministry of the Environment); for natural gas in Japan, the coefficient used is based on the Act on the Promotion of Global Warming Countermeasures.

(2) Emissions of HFCs and PFCs in production processes at sitesScope 1

  • The scope of calculation covers four manufacturing bases of Daikin Industries, Ltd., eight manufacturing subsidiaries in Japan, and 46 manufacturing subsidiaries overseas.
  • For estimates of emissions of HFCs and PFCs, material balances and emissions coefficients are set and calculated based on methods stipulated in the Act on the Promotion of Global Warming Countermeasures.
  • Global warming potentials of HFCs and PFCs are from the IPCC Fourth Assessment Report.

(3) Non-energy-induced CO2, CH4, N2O, SF6 NF3 emissions in production processes at sitesScope 1

  • The scope of calculation is the four manufacturing bases of Daikin Industries.
  • Calculations are based on emissions coefficients stipulated in the Act on the Promotion of Global Warming Countermeasures.
  • Global warming potentials are from the IPCC Fourth Assessment Report.

(4) Use of electricity and heat at sites (Energy-induced CO2)Scope 2

  • The scope of calculation covers four manufacturing bases of Daikin Industries, Ltd., eight manufacturing subsidiaries in Japan, and 46 manufacturing subsidiaries overseas.
  • CO2 emissions coefficients are as follows.
    Purchased electricity: 
    In Japan: 
    0.384kg-CO2/kWh
    Based on Environmental Activity Evaluation Program (Eco-Action 21) (1998, Ministry of the Environment)
    Overseas: 
    Coefficients provided by electricity distribution companies
    Based on Report on Survey of Estimates of CO2 Unit Emissions in Power Generation Fields in Countries of the World (Japan Electrical Manufacturers' Association), and on CO2 Emissions from fuel combustion 2015 edition (IEA)
    Purchased heat: 
    0.068kg-CO2/MJ
    Based on Environmental Activity Evaluation Program (Eco-Action 21) (1998, Ministry of the Environment)
    For Kashima Plant, 0.05 kg-CO2/MJ (surveyed value by site)

(5) Purchased products and services (Energy-induced CO2)Scope 3

  • Scope of calculation covers components and materials purchased for air conditioners, water heaters, oil hydraulic products, filters, and fluorochemical products produced in Japan, China, Thailand, Malaysia, India, Belgium, the Czech Republic, the Netherlands, France, Italy, Germany, Turkey, and the U.S.
  • For each, purchased amount is multiplied by CO2 emission coefficient.
  • CO2 emission coefficient is based on CFP Program Basic Database Ver. 1.01 (data in Japan), by the Japan Environmental Management Association for Industry, and the Inventory Database for Environment Analysis, by the National Institute of Advanced Industrial Science and Technology, and the Japan Environmental Management Association for Industry
  • For chemicals, approximately 80% of the highest volume ones were selected, and a 100% value estimate calculation was done.

(6) CO2 emissions in use of products sold in Japan (Energy-induced CO2)Scope 3

  • Scope of calculation covers CO2 emissions from the use of residential air purifiers, central air conditioners, residential water heaters, residential air conditioners, factory air conditioners, and air conditioners for buildings, stores, and offices sold in Japan, ASEAN, China, Hong Kong, Taiwan, Australia, the EU, the U.S., and India.
  • Calculation method: Annual electricity consumption × product lifecycle × electricity CO2 emission coefficient × products sold.
  • Annual electricity consumption and others are as follows.
    Annual electricity consumption: 
    Catalog values for residential air conditioners, assumed conditions of actual use for other products.
    Product lifecycle: 
    10 years for residential air conditioners, water heaters, and air purifiers, 13 years for other products.
    Electricity CO2 emission coefficient: 
    In Japan: 
    0.348 kg-CO2/kWh;
    based on Environmental Activity Evaluation Program (Eco-Action 21) (1998, Ministry of the Environment).
    Overseas: 
    Based on Report on Survey of Estimates of CO2 Unit Emissions in Power Generation Fields in Countries of the World (The Japan Electrical Manufacturers’ Association), or on Methodology for Ecodesign of Energy-related Products (COWI, VHK).
  • Up to 80% of the total sales volume, in order of highest selling products, was calculated, and a 100% value estimate calculation was done.

(7) Refrigerant leakage in use of products soldScope 3

  • Scope of calculation covers refrigerant leakage during use of refrigeration and air conditioning equipment sold in Japan, ASEAN, China, Hong Kong, Taiwan, Australia, the EU, the U.S., and India.
  • Calculation method: Annual leakage rate × product lifecycle × global warming potential of refrigerant × products sold.
  • Annual leakage rate and others are as follows.
    Annual leakage rate: 
    Revisions of Emission Coefficient, Etc. During Use of Refrigeration and Air Conditioning Equipment, by Manufacturing Industries Bureau, Ministry of Economy, Trade and Industry, March 17, 2009.
    Product lifecycle: 
    10 years for residential products, 13 years for commercial refrigeration and air conditioning equipment.
    Global warming potentials of refrigerants are from the IPCC Fourth Assessment Report.
  • Up to 80% of the total sales volume, in order of highest selling products, was calculated, and a 100% value estimate calculation was done.

(8) Disposal of products sold

  • Scope of calculation is same as part (7).
  • For calculation method, refrigerant leakage is calculated by refrigerant charge amount × refrigerant global warming potential × leakage rate at time of disposal. The emissions accompanying things like the transport and disassembly of waste products is calculated by multiplying the emissions per item by the number of items sold.
  • Leakage rate at time of disposal is set at 80% for industrialized countries and 100% for emerging countries.
    Global warming potentials of refrigerants are from the IPCC Fourth Assessment Report.
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