The Office Building Division of Mitsui Fudosan Co., Ltd. conducts environmental accounting for office buildings that Mitsui Fudosan owns or partially owns.

The amount invested in fiscal 2009 was 199,388 thousand yen, which was used for central monitoring facilities renovation work, including installation of energy management meters, in addition to air conditioner renovation work.
Expenses for this period totaled 761,842 thousand yen, composed of maintenance costs for various equipment for the proper operation of building equipment in terms of energy management, as well as expenses to wash mid-performance filters and other expenses.
Accumulated expenses from the base fiscal year reached 5,155,207 thousand yen.

The environmental load index for fiscal 2009 on the overall decreased compared to the previous fiscal year (the waste recycling rate improved). When compared with that for the base fiscal year when the concerned effect began to be calculated (fiscal 2002), each of the indices has basically decreased (improved), except for consumption of gas.

Calculation of Environmental Accounting

• Investment and expenses required for environmental conservation were calculated in the environmental conservation costs, and environmental conservation effects and economic effects were calculated in the environmental conservation effects. In addition, fiscal 2002 is regarded as the base fiscal year for comparisons/calculations.
• Expenses for environmental conservation costs include depreciation allowance for equipment, etc. invested in.
• Among environmental conservation costs related to administrative activities, expenses for conducting occupational knowledge training and other expenses are posted.
• The basis for conversion into CO₂ is as follows. In order to compare with the base fiscal year, the numerical values for this fiscal year and the previous fiscal year were also calculated according to the following basis. CO₂ emissions coefficient (other than electricity): The CO₂ emissions coefficient indicated in the Enforcement Ordinance of the Act on Promotion of Global Warming Countermeasures (revised in December 2002).
  CO₂ emissions coefficient (electricity): The CO₂ emission coefficient indicated in the Enforcement Ordinance of the Act on Promotion of Global Warming Countermeasures (revised in December 2002) (the numerical value for general electric power suppliers is used).
• Targeted properties of this fiscal year differ from those of the previous fiscal year and base fiscal year.