Other Environmental Data

Environmental Accounting (Mitsui Fudosan Office Building Division)

Cost of Environmental Conservation

Investments in fiscal 2017 totaled ¥344,334,000 mainly for updating air-conditioning systems and installing new air-conditioning control equipment.

Spending during the fiscal year of ¥1,205,406,000 was primarily for the maintenance of equipment for managing energy usage in the operations of building facilities, and for cleaning medium-performance filters. Moreover, management costs totaled ¥95,990,000 which included efforts to ensure compliance with the Energy Conservation Law and the Tokyo Metropolitan government’s environmental regulations. A cumulative total of ¥14,452,862,000 has been spent on environmental conservation since the base fiscal year.

Calculation of Environmental Accounting
  • Investment and expenses required for environmental conservation were calculated in the environmental conservation costs. 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 with respect to environmental conservation effects is as follows. In order to compare with the base fiscal year, the numerical values for the fiscal year under review and the previous fiscal year were also calculated on 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 emissions 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 the fiscal year under review differ from those of the previous fiscal year and base fiscal year.

Cost of Environmental Conservation (Fiscal 2017)

Scope of calculations: Office buildings that Mitsui Fudosan owns or partially owns (targeted: 67 buildings)
Applicable period: April 1, 2017 – March 31, 2018
Base fiscal year: Fiscal 2002
(thousand yen)
Classification Contents of Major Initiatives Investment Current Expenses Cumulative Expenses from Base Fiscal Year
1 Environmental Conservation Costs to Reduce Environmental Impact Generated through Production/ Service Activities in Business Areas
(costs in business areas)
344,208 1,048,703 12,331,823
Breakdown 1-1 Antipollution Costs Effluent Treatment Facility, Smoke Density Measurements, Countermeasures against Legionella Bacteria, etc. 3,242 24,577 473,356
1-2 Global Environment Conservation Costs Renovation of Heat Sources, Renovation of Air Conditioners, External CO2 Control, Renewal of Central Monitoring Stations, Midperformance Filter Cleaning, etc. 330,966 738,288 7,956,067
1-3 Resource Recycling Costs Facility to Recycle Wastewater, Expenses to Recycle Food Scraps, Expenses to Recycle Fluorescent Light and Batteries, etc. 10,000 285,838 3,902,400
2 Costs to Reduce Environment Load Generated Upstream or Downstream Due to Production/Service Activities (Upstream/Downstream Costs) 0 0 0
3 Environment Conservation Cost in Administrative Activities (Administrative Activity Costs) Expenses to Comply with Environmental Laws and Ordinances,
Expenses to Provide Environmental Education, etc.
0 95,990 1,334,179
4 Environment Conservation Cost in Research and Development Activities
(Research and Development Costs)
Environmental-related Research and Development Expenses,
Depreciation on Facilities Related to Research and Development
Personnel Expenses for Environment related Research and Development
0 0 42,440
5 Environment Conservation Cost in Social Activities (Social Activity Costs) Planting Refurbishments, Maintenance Expenses for Outdoor Facility Planting, etc. 126 60,713 744,420
6 Costs to Handle Environmental Damage (Environmental Damage Costs) 0 0 0
Total 344,334 1,205,406 14,452,862

Environmental Conservation

In overall terms, environmental load indices for fiscal 2017 were unchanged from the previous fiscal year. Compared with the base fiscal year (fiscal 2002), indicators across-the-board are improving.

Looking at electricity, electricity usage per unit of floor area at managed properties, 6,770 kWh of electricity was used per 1,000 m2 in fiscal 2017, a decrease of 4,170 kWh per 1,000 m2 (down approximately 38%) compared with the base fiscal year, which was 10,940 kWh per 1,000 m2. This represents an improvement in electricity usage per unit of floor area.

For water, water usage per unit of floor area at managed properties, 40.15 tons of water was used per 1,000 m2, a reduction of 37.81 tons per 1,000 m2 (down approximately 48%) compared with 77.96 tons per 1,000 m2 in the base fiscal year.

From a recycling versus total waste volume perspective, the ratio was 71.32% in fiscal year under review compared with 44.77% in the base fiscal year, for a 26.55 percentage point improvement in the recycling ratio. Moreover, turning to waste volume per unit of floor area, the amount of waste generated per unit of floor area declined to 0.63 tons per 1,000 m2 in the fiscal year under review, a reduction of 0.56 tons per 1,000 m2 (down approximately 47%) or a decline of around one-half compared with the base fiscal year.

Environmental Conservation Effects (Fiscal 2017)

Scope of calculations: Office buildings that Mitsui Fudosan owns or partially owns (targeted: 67 buildings)
Applicable period: April 1, 2017 – March 31, 2018
Base fiscal year: Fiscal 2002
Contents of Effects Environmental Load Index
Current Fiscal Year (Fiscal 2017) Previous Fiscal Year (Fiscal 2016) Base Fiscal Year (Fiscal 2002) Year-on-year Change (Current fiscal year-Previous fiscal year) Compared with Base Fiscal year (Current fiscal year-Base fiscal year)
Energy-saving for Administrative Use Consumption by Floor Area of Crude Oil Equivalent to Fuel/Electricity for Administrative Use (after correction based on occupancy ratio) [crude oil equivalent kℓ/thousand m2]*1 2.00 1.87 3.16 0.13 -1.16
Consumption by Floor Area of CO2 Equivalent to Fuel/ Electricity for Administrative Use (after correction based on occupancy ratio) [equivalent t-CO2/thousand m2]*2 3.08 2.88 4.87 0.20 -1.79
Break-down of Each Energy Electricity: Consumption by Floor Area of Electric Power Consumed for Administrative Use (after correction based on occupancy ratio) [thousand kWh/thousand m2]*3 6.77 6.29 10.94 0.48 -4.17
Gas: Consumption by Floor Area of Gas Consumed for Administrative Use (after correction based on occupancy ratio) [thousand m3/thousand m2]*4 0.26 0.25 0.32 0.01 -0.06
DHC: Consumption by Floor Area of DHC Purchased for Administrative Use (after correction based on occupancy ratio) [MJ/thousand m2]*5 10,942.76 10,315.35 24,258.57 627.41 -13,315.81
Water: Consumption by Floor Area of Water Consumed for Administrative Use (after correction based on occupancy ratio) [t/thousand m2]*6 40.15 45.06 77.96 -4.91 -37.81
Consumption by Floor Area of Disposed Waste (after correction based on occupancy ratio) [t/thousand m2]*7 0.63 0.64 1.19 -0.01 -0.56
Improvement of Recycling Rate to Total Waste [% 71.32 74.60 44.77 -3.28 26.55
*1 Crude oil equivalent to fuel/electricity use [kℓ] / (total floor area [thousand m2] x occupancy ratio)
*2 CO2 equivalent to fuel/electricity use for administrative use [t-CO2] / (total floor area [thousand m2] x occupancy ratio)
*3 Electric power consumed for administrative use [thousand kWh] / (total floor area [thousand m2] x occupancy ratio)
*4 Gas consumed for administrative use [thousand m3] / (total floor area [thousand m2] x occupancy ratio)
*5 DHC purchased for administrative use [MJ] / (total floor area [thousand m2] x occupancy ratio)
*6 Water consumed for administrative use [t] / (total floor area [thousand m2] x occupancy ratio)
*7 Amount of disposed waste [t] / (total floor area [thousand m2] x occupancy ratio)

Environmental Data by Prefectural/Municipal Ordinance

Environmental Data Based on Ordinances of the Tokyo Metropolitan Government (22.8 MB)
Environmental Data Based on Ordinances of the Yokohama Municipal Government (1.1 KB)
Environmental Data Based on Ordinances of the Saitama Prefectural Government (736 KB)
Environmental Data Based on Ordinances of the Hiroshima Municipal Government (188 KB)