Protecting the precious environment
Environmental accounting

We introduced environmental accounting in fiscal 2004 to get a grasp of environmental conservation activities in quantitative terms and promote such activities in an efficient manner.

Basic matters

Scope of calculations

Haseko Corporation's activities

  1. Completed works at 122 worksites (new building works: 105, demolition works: 17)
  2. Offices (Tokyo region: Shiba Head Office Building/Yokohama Branch/Haseko Technical Center, Kansai region: Osaka Hiranomachi Building, Nagoya Branch/Kyoto Branch)

Target period

April 1, 2019 to March 31, 2020

Aggregation method

The following cost items were aggregated by using "Environmental Accounting Guidelines 2005 (Ministry of the Environment)" and "Environmental Accounting Guidelines in the Construction Industry 2002 (Japan Federation of Construction Contractors)" as reference.

  1. Business area costs
    1. Pollution prevention costs: Costs for measures to prevent air pollution, water contamination, noise, vibration, etc. were aggregated.
    2. Global environmental conservation costs: Costs for measures to prevent global warming, save energy, prevent the destruction of the ozone layer, etc. were aggregated.
    3. Resource circulation costs: Costs for waste separation/recycling and appropriate processing, etc. were aggregated.
  2. Upstream/downstream costs
    Labor costs incurred in proposing environment-conscious designs were aggregated.
  3. Administration costs
    Costs for environmental conservation management activities and ISO14001:2015 implementation and maintenance costs were aggregated.
  4. R&D costs
    Costs for research and technological development related to environmental conservation were aggregated.
  5. Social activity costs
    Costs for making donations, providing assistance, etc. to environmental groups and local communities were aggregated.
  6. Environmental remediation costs
    Costs for repairing the surrounding environment and manifest purchasing expenses (fund portion) were aggregated.

Environmental conservation costs

Classification Description of main activities Amount of costs (million yen)
FY2015 FY2016 FY2017 FY2018 FY2019
Business area costs   3,424 4,191 4,006 5,216 5,958
(1) Pollution prevention costs Costs for measures to prevent pollution at worksites 309.4 392.8 559.2 519.9 598.6
(2) Global environmental conservation costs Costs for stop-idling campaigns and costs for appropriate processing of CFC 8.3 13.4 21.2 13.5 10.2
(3) Resource circulation costs Costs for separation, recycling and appropriate processing of construction waste 3,106 3,784.8 3,425.2 4,683 5,349.8
Upstream/downstream costs Labor costs for environment-conscious designs 8.4 10.9 8.8 12.3 11.6
Administration costs ISO14001 registration/examination/implementation costs
Labor costs for ISO14001 activities
Costs for monitoring and measuring environmental impact
Environmental education costs
219 413.9 260.8 377.1 288.5
R&D costs Costs for research and technological development related to environment-related technologies 75.5 88.3 94.9 108 204.8
Social activity costs Donations to environmental groups and local communities 0.3 0.4 0.6 0.4 2.5
Environmental remediation costs Costs for repairing surrounding environment and manifest purchasing expenses (fund portion) 83 144.5 76.6 110 74.4
Total environmental conservation costs 3,810 4,849 4,447 5,824 6,539

Environmental conservation effects Item

Item Unit FY2015 FY2016 FY2017 FY2018 FY2019
Business area effects Construction activities Volume of construction waste discharged thousand tons 416.8 520.2 538.3 565.5 666.9
Volume of construction waste recycled thousand tons 404.3 498.7 532.7 538.8 660.6
Final disposal volume of construction waste thousand tons 12.5 21.5 5.6 26.7 6.3
CO2emissions (new building construction) thousand tons-CO2 35.3 28.9 34.7 36.6 30.4
CO2emissions per unit of net sales
(new building construction)
t-CO2/hundred million yen 11.04 10.43 10.53 10.21 9.87
Office activities Electricity usage thousand kWh 6,254 6,222 6,347 6,386 7,053
Copy paper usage ten thousand sheets 1,998 1,813 1,841 1,778 1,791
CO2emissions t-CO2 2,145 2,113 2,159 2,165 2,382
General waste discharged tons 71.1 80.1 57.0 44.3 43.7
Upstream/downstream Green procurement Steel for electric furnace
(reinforcing steel)
thousand tons 211 194 203 228 198
Blast furnace cement and freshly-mixed concrete thousand m3 206 255 176 225 210
Recycled tiles thousand m2 440 310 302 356 329
Recycled plasterboards thousand m2 6,142 4,055 4,566 4,765 4,793
Particle boards (double flooring) thousand m2 209 96 189 255 247
Styrene materials (wall-backing packing) m3 375 326 395 419 366
Water-saving toilet bowl thousand units 16 18 16 20 15
Rooftop and wall greening thousand m2 4 9 11 11 9
Permeable paving thousand m2 20 21 16 26 23
SUS piping (water supply piping in communal areas) t 105 98 84 53 29
Hf inverter lighting equipment thousand units 18 24 39 50 128
Long vinyl sheets thousand m2 196 297 280 383 369
Extruded polystyrene foam thousand m3 4 4 4 4
CFC-free urethane form thousand m2 389 720
Green purchase rate of stationery % 92.3 93.1 93.8 93.9 93.5

* Upstream/downstream effects of green procurement have been calculated for extruded polystyrene foam since FY2016 and CFC-free urethane form since FY2018.

Results of Calculation

  1. The total environmental conservation costs in fiscal 2019 was 6,539 million yen. This was 715 million yen (12.2%) higher than in fiscal 2018.
  2. Of the total environmental conservation costs, business area costs accounted for 91.1%, of which 89.8% were resource circulation costs. Resource circulation costs rose by 666.8 million yen (14.2%) from fiscal 2018.
  3. The volume of construction waste discharged was 101.4 thousand tons (17.9%) higher than in fiscal 2018.
  4. CO2 emissions from construction activities (new building construction) was 30.4 thousand tons-CO2. This was 6.2 thousand tons-CO2 (16.9%) lower than in fiscal 2018. The emissions per unit of net sales was 9.87 t-CO2/hundred million yen, which was 0.34 t-CO2/hundred million yen (3%) lower than in fiscal 2018.
  5. Copy paper usage in office activities was 17,910 thousand sheets. This was 130 thousand sheets (0.7%) more than in fiscal 2018.
  6. CO2 emissions from office activities was 2,382 t-CO2. This was 217 t-CO₂ (10%) higher than in 2018.