Data of Environmental Management Activities

1. Business Activities, Material Balance, and Environmental Accounting

We aim to continuously reduce our environmental impact and promote environmental management by measuring resources and energy input in our business activities and understanding our environmental impact.

INPUT - Main Resources and Energy Inputs

Energy Consumption
< Domestic non-consolidated >
unitFY2022FY2023FY2024
Officeelectricity MWh 2,632 3,446 3,373
Construction siteselectricity MWh 18,810 20,328 21,483
kerosene kL 350 194 276
diesel kL 20,244 14,285 11,663
fuel oil kL 0 317 0

 

Construction Materials Input
< Domestic non-consolidated >
unitFY2022FY2023FY2024
Ready-mixed concrete thousand tonnes 1,127.0 1,253.0 974.1
Rebar thousand tonnes 70.0 88.7 60.4
Steel frame thousand tonnes 26.5 45.1 33.3
Cement thousand tonnes 27.2 22.6 23.5
Main Recycled Materials Input
< Domestic non-consolidated >
unitFY2022FY2023FY2024
Blast furnace ready-mixed concrete thousand tonnes 200.4 104.7 159.1
Electric arc furnace rebar thousand tonnes 70.0 88.7 60.4
Electric arc furnace steel thousand tonnes 17.0 12.4 8.7
Blast furnace cement thousand tonnes 2.4 3.1 0.0
Recycled crushed stone thousand tonnes 72.8 59.9 83.1
Asphalt mixture thousand tonnes 9.3 10.5 17.5
Soil generated from construction thousand m³ 550.9 162.5 270.7

Activities of Each Sector

activities_of_each_sector.png

OUTPUT - Main Emissions

CO2 Emissions
< Domestic non-consolidated >
Scope 1 and Scope 2unitFY2022FY2023FY2024
CO2 Emissions thousand t-CO2 62.6 45.3 35.2
 Office activities thousand t-CO2 2.0 1.0 1.7
 Construction stage thousand t-CO2 60.6 44.3 33.5
Emission Intensity t-CO2/100 million yen 21.9 15.5 12.6

 

Scope 3unitFY2022FY2023FY2024
CO2 Emissions thousand t-CO2 1,335.5 1,358.6 1,116.0
Category 1 thousand t-CO2 283.3 538.2 345.9
Category 11 thousand t-CO2 954.1 736.4 727.0
Other categories thousand t-CO2 98.1 84.0 43.1

 

Disposal of soil generated from construction
< Domestic non-consolidated >
unitFY2022FY2023FY2024
Disposal of soil generated from construction thousand m³ 1085.0 1342.4 1,184.3
Use of recycled resources thousand m³ 765.8 1021.6 794.9
On-site thousand m³ 518.3 814.8 561.2
Off-site delivery thousand m³ 247.5 206.8 233.7
Other Processes thousand m³ 319.2 320.8 389.4
Disposal of construction waste
< Domestic non-consolidated >
unitFY2022FY2023FY2024
Disposal of construction waste thousand tonnes 551.3 452.4 222.9
Intermediate treatment thousand tonnes 520.6 430.7 209.5
Final disposal thousand tonnes 30.7 21.7 13.4
Disposal Intensity t/100 million yen 192.4 154.3 79.5

Environmental Accounting

We calculate environmental conservation cost in order to clarify the costs and benefits for environmental conservation in our business activities.

< Domestic non-consolidated >
unitFY2022FY2023FY2024
Environmental Conservation Cost million yen 5,389 5,832 5,335
 A) Cost within our business area million yen 4,392 4,681 4,403
  (Pollution prevention cost) million yen 1,513 1,366 1,607
  (Global environmental conservation cost) million yen 30 69 72
  (Resource circulation cost) million yen 2,849 3,246 2,724
 B) Upstream, downstream cost million yen 380 295 229
 C) Administrative activity cost million yen 409 638 466
 D) R&D cost million yen 175 181 190
 E) Social activity cost million yen 3 5 17
 F) Environmental remediation cost million yen 30 32 30
  • Calculation method of environmental accounting;

    • The period covered : 1 April 2024 to 31 March 2025
    • Boundary: Domestic head office, branch offices, three PC factories, and building construction sites and civil engineering work sites.

2. Contribution for Decarbonized Society

In November 2021, we set forth the "Roadmap to Carbon Neutrality by 2050" and are working to achieve a 50% reduction (from fiscal 2020) of CO2 emissions for Scope 1 + Scope 2 by 2030.

  • * The boundary of calculation on a non-consolidated basis includes domestic construction sites, offices and factories, and overseas construction sites and offices of Sumitomo Mitsui Construction Co., Ltd.
    Overseas CO2 emissions in fiscal 2020 are calculated based on the ratio of domestic and overseas net sales of completed construction contracts. The figures in fiscal 2022 are based on a 2-month survey of the types of heavy construction equipment, the number of units in operation, and the operating hours, and estimated using the percentage of net sales of completed construction contracts. The boundary of calculation on a consolidated basis includes the construction sites, offices, and factories of domestic affiliates, and the construction sites and offices of overseas subsidiaries. In fiscal 2023, the figures are estimated on the ratio of net sales of completed construction contracts based on a 5-month (Sumitomo Mitsui Construction Co., Ltd.) and 2-month (overseas subsidiaries) survey of fuel used in heavy construction equipment and electricity used for construction equipment. In fiscal 2024, the amount of fuel used for construction heavy machinery and the amount of electricity used for construction machinery were calculated based on a 12-month survey.
    The boundary of calculation on a consolidated basis includes construction sites, offices and factories of domestic consolidated subsidiaries and construction sites and offices of overseas subsidiaries.
  • * Emission factors used in the calculation of CO2 emissions (Scope 1 and Scope 2) in fiscal 2020 and 2022 are those provided by Keidanren (Japan Business Federation) for kerosene, diesel oil, and heavy oil A, and the default values under the Act on Promotion of Global Warming Countermeasures for the others in fiscal 2020 and 2022. Emission factors used in the calculation of CO2 emissions (Scope 1 and Scope 2) in fiscal 2023 and 2024 are the default values under the Act on Promotion of Global Warming Countermeasures. The emission factors for each fuel overseas in fiscal 2024 are the values of IPCC (outside the U.S.) and EPA (U.S.).
    Emission factors for domestic electricity in fiscal 2020 are provided by Keidanren (Japan Business Federation), and those from fiscal 2022 are based on each contract. Emission factors for overseas electricity are the country-specific emission factors described in "Emissions intensity database for calculation of greenhouse gas emissions of organizations through supply chains" (from fiscal 2020 to 2023), "IEA Emissions Factors 2024" (in fiscal 2024), and the default values under the Act on Promotion of Global Warming Countermeasures for the others.
  • * The amount of diesel oil used in heavy construction equipment at construction sites is calculated based on the total number of heavy construction equipment in operation for each type of equipment, in accordance with the "Environmental Information Disclosure Guidelines" of the Japan Federation of Construction Contractors (Nikkenren), using JFCC's survey sheet.
  • * Scope 1, 2, and Scope 3 Category 1 excluded overseas construction sites with less than 100 million yen and construction periods of less than 6 months. Scope 3 Category 11 included domestic construction sites for which energy-saving calculations were performed and excluded overseas construction sites completed in the reporting year with less than 100 million yen and construction periods of less than 6 months.
CO2 Emissions from Construction Sites and Offices
< Non-consolidated >
unit

FY2020

FY2022FY2023FY2024
Total Emissions t-CO2 70,766 112,113 63,437 45,289
 Scope 1 (domestic) t-CO2 50,328 54,844 39,734 32,017
 Scope 1 (overseas) t-CO2 6,251 45,732 15,595 6,291
 Scope 2 (domestic) t-CO2 12,491 7,855 5,633 3,269
 Scope 2 (overseas) t-CO2 1,696 3,682 2,475 3,712
Intensity t-CO2/100million yen 22.0 33.2 18.8 14.2
% of base year % 0.0 58.4 -10.4 -36.0%

Scope 1 and Scope 2 CO2 Emissions
< Consolidated >
unitFY2020FY2022FY2023FY2024
SMC Group  t-CO2 120,719 169,077 130,740 105,290
Scope 1 t-CO2 99,667 147,973 114,925 93,491
Scope 2  t-CO2 21,052 21,104 15,815 11,799
SMC (Non-consolidated)  t-CO2 70,766 112,113 63,437 45,289
Scope 1 (domestic) t-CO2 50,328 54,844 39,734 32,017
Scope 1 (overseas) t-CO2 6,251 45,732 15,595 6,291
Scope 2 (domestic) t-CO2 12,491 7,855 5,633 3,269
Scope 2 (overseas) t-CO2 1,696 3,682 2,475 3,712
Consolidated subsidiaries t-CO2 49,953 56,964 67,303 60,001
Scope 1 (domestic) t-CO2 43,088 42,311 41,364 37,337
Scope 1 (overseas) t-CO2 5,086 18,233 17,846
Scope 2 (domestic) t-CO2 6,865 8,413 6,406 2,940
Scope 2 (overseas) t-CO2 1,154 1,301 1,878
  • * Third-party assurance for consolidated Scope 1 and Scope 2 CO2 Emissions has been received since FY2023.
    Values assured by the third -party are indicated with an asterisk (★).
Scope 3 CO2 Emissions
< Non-consolidated >
unitFY2020
(base year)
FY2022FY2023FY2024
Total Emissions t-CO2 1,472,596 1,335,506 1,358,625 1,468,867
Category 1 Purchased goods and services t-CO2 242,619 283,290 538,236 382,893★
Category 2 Capital goods t-CO2 333 5,545 665 892
Category 3 Fuel- and energy-related activities t-CO2 9,014 15,542 9,763 6,337
Category 4 Upstream transportation and distribution t-CO2 1,417 9,594 12,595 7,307
Category 5 Waste generated in operations t-CO2 36,722 44,282 40,148 20,210
Category 6 Business travel  t-CO2 1,225 2,239 3,454 3,101
Category 7 Employee commuting t-CO2 247 267 616 546
Category 8 Upstream leased assets t-CO2 Not applicable Not applicable Not applicable Not applicable
Category 9 Downstream transportation and distribution t-CO2 Not applicable Not applicable Not applicable Not applicable
Category 10 Processing of sold products t-CO2 Not applicable Not applicable Not applicable Not applicable
Category 11 Use of sold products t-CO2 1,147,446 954,105 736,380 1,037,264★
Category 12 End-of-life treatment of sold products t-CO2 11,911 20,642 16,768 10,317
Category 13 Downstream leased assets t-CO2 Not applicable Not applicable Not applicable Not applicable
Category 14 Franchises t-CO2 Not applicable Not applicable Not applicable Not applicable
Category 15 Investments t-CO2 21,662 0 0 0
  • *Non-consolidated Scope 3 Category 1 and Category 11 CO2 emissions for FY2024 have been independently assured. The values assured by an independent assurer are indicated with ★.
  • *Materials to be calculated for Category 1 are concrete, rebar, PC steel, steel, cement, crushed stone, asphalt, and soil.
  • *Since FY2023, CO2 emissions from fuel used for transporting waste and construction waste have been changed from Scope 1 to Scope 3 Category 4 (2,365t-CO2) and Scope 3 Category 5 (1,050t-CO2).
Scope 3 Emissions
< Consolidated >
unitFY2020
FY2022FY2023FY2024
Total Emissions t-CO2 1,631,788 1,788,777 2,680,310 3,685,639
 Category 1 Purchased goods and services t-CO2 361,092 390,962 1,239,530 663,859
 Category 2 Capital goods t-CO2 763 11,998 9,257 4,941
 Category 3 Fuel- and energy-related activities t-CO2 18,558 27,406 20,490 15,834
 Category 4 Upstream transportation and distribution t-CO2 18,970 15,495 21,681 277,642
 Category 5 Waste generated in operations t-CO2 41,244 50,194 43,554 24,557
 Category 6 Business travel t-CO2 3,163 4,540 6,520 5,737
 Category 7 Employee commuting t-CO2 593 1,257 2,053 1,489
 Category 8 Upstream leased assets t-CO2 Not applicable Not applicable Not applicable Not applicable
 Category 9 Downstream transportation and distribution t-CO2 1,242 1,585 1,310 1,064
 Category 10 Processing of sold products t-CO2 Not applicable Not applicable Not applicable Not applicable
 Category 11 Use of sold products t-CO2 1,174,252 1,262,858 1,312,103 2,672,054
 Category 12 End-of-life treatment of sold products t-CO2 11,911 22,482 23,813 18,462
 Category 13 Downstream leased assets t-CO2 Not applicable Not applicable Not applicable Not applicable
 Category 14 Franchises t-CO2 Not applicable Not applicable Not applicable Not applicable
 Category 15 Investments  t-CO2 0 0 0 0
  • * Category 15 (Consolidated) for the base year is 0 because it is included in Scope 1 and Scope 2 of the consolidated subsidiaries.
Calculation Method of Scope 3 Emissions by Category
categoryCaculation method
1 Calculated by multiplying the quantity of each material procured in the reporting year by the CO2 emission intensity of each material. CO2 emission intensity for concrete, rebar, PC steel, steel, cement, and crushed stone is based on the Ministry of the Environment "Emission intensity database for calculation of greenhouse gas emissions by organizations through supply chains (Ver. 3.5) (March 2025)". CO2 emission intensity for asphalt and soil is based on the CO2 emission intensity of IDEA(v2.3, December 27, 2019).
2 Calculated by multiplying the change in property, plant and equipment (Buildings, structures, machinery and equipment, vehicle carriers, tools, appliances and fixtures) from the previous year by the CO2 emission intensity of capital goods. CO2 emission intensity is based on "Emissions intensity database for calculation of greenhouse gas emissions of organizations through supply chains (Ver. 3.5) (March 2025)."
3 Calculated by multiplying electricity consumption in the reporting year (excluding electricity from renewable sources) by the CO2 emission intensity of electricity during fuel procurement. CO2 emission intensity is based on "Emissions intensity database for calculation of greenhouse gas emissions of organizations through supply chains (Ver. 3.5) (March 2025). For diesel oil, kerosene, A-type heavy oil, gasoline, LNG, LPG, and GTL, CO2 emission intensity is based on IDEA(v2.3, December 27, 2019).
4 Calculated using the Ton-Kilometer method or the fuel consumption method, based on the weight of materials procured in the reporting year and the average distance transported. CO2 emission intensity are based on "Emissions intensity database for calculation of greenhouse gas emissions of organizations through supply chains (Ver. 3.5) (March 2025)."
5 Calculated by multiplying the weight of construction waste disposal in the reporting year by the CO2 emission intensity (including transportation) for each type of waste. CO2 emission intensity is based on the "Emissions intensity database for calculation of greenhouse gas emissions of organizations through supply chains (Ver. 3.5) (March 2025)."
6 Calculated by multiplying the amount by means of transportation used for business trips (Railways, aircraft, buses and taxis) by the CO2 emission intensity by means of transportation. CO2 emission intensity is based on "Emissions intensity database for calculation of greenhouse gas emissions of organizations through supply chains (Ver. 3.5) (March 2025)."
7 Calculated by multiplying the amount of commuting expenses by means of transportation (Railways, buses and private cars) by the CO2 emission intensity by means of transportation. CO2 emission intensity is based on "Emissions intensity database for calculation of greenhouse gas emissions of organizations through supply chains (Ver. 3.5) (March 2025)."
9 Calculated using the Ton-Kilometer method or the fuel consumption method, based on the weight of materials sold in the reporting year and the average distance transported. CO2 emission intensity are based on "Emissions intensity database for calculation of greenhouse gas emissions of organizations through supply chains (Ver. 3.5) (March 2025)."
11 For domestic buildings completed in the reporting year, annual CO2 emissions are calculated based on BEI values, standard primary energy consumption, and primary energy composition ratio in the energy conservation statement, and then multiplied by the duration of use of the building. For overseas buildings completed in the reporting year, annual CO2 emissions are calculated by multiplying the total floor area by the emission intensity per unit area for each building use, and then multiplied by the duration of use of the building. CO2 emission intensity per unit area for each use of the building is based on "Emissions intensity database for calculation of greenhouse gas emissions of organizations through supply chains (Ver. 3.5) (March 2025)."
12 The amount of CO2 emitted when disposing of materials for projects completed in the reporting year was calculated from the amount of CO2 emitted when dismantling the projects. The amount of CO2 emitted when disposing of materials was calculated by dividing the quantity of materials such as concrete, reinforcing steel, PC steel, steel, cement, crushed stone, and asphalt by the ratio of sales of projects completed in the reporting year to sales in the reporting year, and multiplying the ratio by the CO2 emission intensity. The CO2 emission intensity was based on the "Emissions intensity database for calculation of greenhouse gas emissions of organizations through supply chains (Ver. 3.5) (March 2025)". The amount of CO2 emitted when dismantling projects completed in the reporting year was estimated from the total floor area of projects completed in the reporting year by calculating the amount of CO2 emitted per unit area based on the results of demolition projects of Sumitomo Mitsui Construction Co., Ltd.
15 Calculated by multiplying the amount of investment made in the reporting year and the CO2 emission intensity of the investment. CO2 emission intensity of the investment is based on "Emissions intensity database for calculation of greenhouse gas emissions of organizations through supply chains (Ver. 3.5) (March 2025)."
  • *GHG emissions quantification is subject to uncertainty when measuring activity data, determining emission factors, and considering scientific uncertainty inherent in the Global Warming Potentials.

3. Contribution to Recycling-Oriented Society

To achieve zero emissions at our construction sites, we have set a KPI of 100% recycling(*1) of construction waste by FY2030. To achieve this target, we are implementing thorough waste separation and outsourcing proper disposal.

We also aim to create a recycling-oriented society that enables sustainable development by prioritizing the procurement of materials, equipment and office supplies with less environmental impact (green procurement) and adopting construction methods and technologies with less environmental impact.

下記のエリアは、左右にスワイプして横スクロールができます。

Construction Waste Recycled (%)
<Domestic non-consolidated >
  

 

FY2022FY2023FY2024FY2030
TargetPerformanceAchievementTargetPerformanceAchievementTargetPerformanceAchievementLong-Term Goal
Civil Engineering Construction 99.2 99.3 99.3 99.3 99.4 99.1 100.0
Building Construction 98.9 97.8 99.0 98.7 99.2 97.1 100.0
  • (*1)The recycling rate excludes hazardous wastes and other wastes that cannot be treated with intermediate processing.
Disposal of construction waste and landfill (Including hazardous wastes and other wastes that cannot be processed with intermediate treatments)
< Domestic non-consolidated >
  unitFY2022FY2023FY2024
Disposal thousand tonnes 551.3 452.4 222.9
Landfill thousand tonnes 30.7 21.7 13.4
(%) of final disposal % 5.6 4.8 6.0
Disposal of construction waste by item
< Domestic non-consolidated >
  unitFY2022FY2023FY2024
Total thousand tonnes 551.3 452.4 222.9
Concrete mass thousand tonnes 240.4 222.5 104.9
Asphalt and concrete mass thousand tonnes 45.9 36.9 26.8
Waste timber thousand tonnes 14.6 13.8 7.7
Construction Sludge thousand tonnes 170.5 117.0 36.0
Plastic waste thousand tonnes 1.6 5.0 5.6
Mixed waste thousand tonnes 17.6 14.6 11.5
Others thousand tonnes 60.7 42.6 30.4
Green Procurement Items (FY2024)
< Domestic non-consolidated >
  Priority items and remarks

Civil engineering construction division
Construction sector/Design sector

Number of priority items: 40 items

Building construction division Construction sector

Number of priority items: 43 items
Design sector Number of priority items: 21 items
Office operation sector (office supplies) Office supplies compliant with the Act on Promoting Green Procurement and Eco Mark products
Office operation sector (OA equipment) Copiers, computers, printers, facsimiles, displays
Use of Green Procurement Products (Main materials)
< Domestic non-consolidated >
  unitFY2022FY2023FY2024
Blast furnace ready-mixed concrete thousand tonnes 200.4 104.7 159.1
Electric arc furnace rebar thousand tonnes 70.0 88.7 60.5
Electric arc furnace steel thousand tonnes 17.0 12.4 8.7
Blast furnace cement thousand tonnes 2.4 3.1 0.0
Recycled crushed stone thousand tonnes 72.8 59.9 83.1
Asphalt mixture thousand tonnes 9.3 10.5 17.5
Water consumption
< Domestic non-consolidated >
  unitFY2022FY2023FY2024
Total thousand m3 372.9 451.7 206.5
Construction sites thousand m3 359.2 436.4 191.9
Offices thousand m3 13.7 15.3 14.6
  • * Water consumption was calculated from water usage charges.
Hazardous Substance Management
< Domestic non-consolidated >
  unitFY2022FY2023FY2024
Asbestos-containing waste t 59.1 68.6 1,954.9
Waste asbestos t 214.3 158.1 42.1
Mercury usage (fluorescent light) t 37.1 21.6 27.0
Waste oil t 18.4 26.5 77.6
Hazardous sludge (Pb): lead t 141.6 192.8 372.3
Disposal of other hazardous substances t 17.2 201.7 319.3

4. Contribution to a Society in Harmony with Nature

We are implementing activities to protect rare plants and animals and to preserve biodiversity at our construction worksites. In FY2024, we conducted protecting activities at seven sites in the civil engineering construction worksites and two in the construction sites.

5. Certification of Environmental Management System

iso-en.jpg

6. Independent Assurance Report

third-party-assurance-report-en.png