Environment

Environmental Data

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Disclosed data coverage rate

Scope of reporting Data coverage rate
Aisan Industry and its consolidated subsidiaries 100%
Production sites of Aisan Industry and its consolidated subsidiaries, as well as Hirose Technical Center. 96.9%
Aisan Industry on a non-consolidated basis. 27.1%

Calculation method for coverage rate

Coverage rate(%)　= (Net sales of companies within the scope of reporting) (Net sales of the Aisan Group as a whole) ×100

CO2emissions

Scope1 (Direct emissions), Scope2 (Indirect emissions associated with the energy),Scope3 (Indirect emissions that occur in an organization, encompassing both upstream and downstream activities)

Unit: t-CO2

2019 2020 2021 2022 2023 2024
Total Scope1, 2, 3 2,078,732 1,641,794 1,688,980 1,890,950 1,902,859 1,790,924

Scope1, 2 (Direct emissions from our company)

Unit: t-CO2

2019 2020 2021 2022 2023 2024
Scope1
(Direct emissions)		 21,434 19,150 20,566 ★ 19,014 ★ 15,793 ★ 15,369
Non-consolidated Head Office and Plant 2,471 2,242 2,177 1,846 1,929 1,765
Anjo Plant 3,433 2,923 2,952 2,659 2,520 2,545
Toyota Plant 3,871 3,568 3,770 3,609 1,078 1,077
Others 19 12 12 12 17 21
Consolidated subsidiaries 11,640 10,405 11,655 10,888 10,249 9,961
Scope2 (Indirect emissions associated with the energy)
Market-based 89,637 76,263 78,983 ★ 76,122 ★ 71,057 ★ 59,151
Non-consolidated Head Office and Plant 7,175 6,302 5,941 4,562 3,769 0
Anjo Plant 16,312 13,053 12,204 9,056 7,742 11,822
Toyota Plant 3,372 3,119 2,761 2,111 3,370 2,548
Others 1,428 1,315 1,268 995 1,116 1,573
Consolidated subsidiaries 61,350 52,474 56,808 59,398 55,060 43,209
Location-based 93,845 81,761 84,534 ★ 83,687 ★ 82,888 ★ 74,601
Non-consolidated Head Office and Plant 7,794 6,851 6,710 6,188 5,873 6,217
Anjo Plant 17,719 14,191 13,783 12,284 11,716 11,937
Toyota Plant 3,663 3,390 3,118 2,863 5,095 4,711
Others 1,550 1,429 1,431 1,341 1,328 1,589
Consolidated subsidiaries 63,119 55,900 59,492 61,011 58,876 50,147 2024 Targets
(Compared to FY 2019)		 2030 Targets
(Compared to FY 2019)
Total 111,071 95,413 99,549 95,136 86,850 74,521 80,779 44,428
Percentage of reduction from the base year (FY 2019) ー 14.1% 10.4% 14.3% 21.8% 32.9% 27% 60%

Data covers Aisan Industry and its consolidated subsidiaries.

★: Third-party verification values

Scope3 (Indirect emissions that occur in an organization, encompassing both upstream and downstream activities)

Unit: t-CO2

Category 2019 2020 2021 2022 2023 2024
1 Purchased goods and services*1 627,857 566,200 609,189 703,694 659,916 ★
630,443
2 Capital goods 69,005 33,071 33,194 69,603 42,240 40,751
3 Fuel and energy-related activities not included in Scope 1 or Scope 2 18,915 16,838 17,819 17,376 ★
15,630		 ★
24,913
4 Upstream transportation and distribution 22,568 21,271 22,231 28,508 38,586 31,483
5 Waste generated in operations 2,845 2,070 2,303 2,801 ★
3,378		 ★
3,334
6 Business travel*2 1,398 1,303 1,267 1,364 ★
1,422		 ★
1,426
7 Employee commuting*2 5,079 4,742 4,599 4,969 ★
5,190		 ★
5,227
8 Upstream leased assets*3 － － － － － －
9 Downstream transportation and distribution*4 － － － － － －
10 Processing of sold products 62 57 62 77 81 85
11 Use of sold products*1 1,209,374 891,020 888,534 954,528 1,031,737 ★
959,544
12 End-of-life treatment of sold products 10,558 9,810 10,232 12,894 17,829 19,197
13 Downstream leased assets*5 － － － － － －
14 Franchise*6 － － － － － －
15 Investments*7 － － － － － －
Total 1,967,661 1,546,381 1,589,431 1,795,814 1,816,009 1,716,404

Data covers Aisan Industry and its consolidated subsidiaries. (Category 4 includes production sites of Aisan Industry and its consolidated subsidiaries)

★: Third-party verification values

  • Figures for FY2019-2023 have been revised due to a change in calculation methodology.
  • Figures for FY2019 - 2020 have been revised.
  • Include in Scope1 and Scope2
  • Downstream transportation and distribution are not included in the calculation.
  • Include in Category 1
  • Not included in the calculation
  • Not included in the calculation

Energy (Consolidation)

Energy consumption

Unit: GJ

【By Type】 2019 2020 2021 2022 2023 2024
Electric power*1 1,433,390 1,265,577 1,336,372 1,339,415 1,326,382 1,172,357
Hot water 42,335 42,335 42,335 42,335 42,335 11,486
Fuel A type heavy oil 848 800 937 910 0 0
C type heavy oil 0 84 13 0 0 0
Town gas 307,314 274,204 286,003 259,892 199,309 193,534
Natural gas 71,729 67,573 78,928 72,558 72,268 86,883
Liquefied petroleum gas (LPG) 1,467 631 921 1,250 1,857 1,786
Kerosene 630 566 755 425 524 573
Gasoline 16,915 12,462 13,823 14,782 11,813 11,832
Diesel oil 18,027 16,890 18,937 19,024 19,530 18,302
Renewable energy*2 4,925 4,972 5,711 5,693 12,782 123,712
Total 1,897,581 1,686,093 1,784,736 1,756,284 1,686,801 ★ 1,620,464

Data covers Aisan Industry and its consolidated subsidiaries.

★: Third-party verification values

  • Figures for FY2019-2023 have been revised due to a change in calculation methodology.
  • Figures for FY2023 have been revised due to a change in calculation methodology.

Waste

Amount of waste (by disposal method)

Unit: t

2019 2020 2021 2022 2023 2024
Waste (Recycled) 3,008 2,011 1,707 1,212 1,281 1,284
Non-consolidated Head Office and Plant 391 181 257 163 172 113
Anjo Plant 593 456 394 340 350 468
Toyota Plant 203 173 186 125 96 74
Hirose Technical Center 0 6 36 19 21 24
Consolidated subsidiaries 1,821 1,195 834 565 642 605
Incinerated waste 1,649 1,461 1,242 1,010 1,088 1,014
Non-consolidated Head Office and Plant 5 4 4 3 2 2
Anjo Plant 83 71 68 79 83 69
Toyota Plant 19 19 20 19 18 11
Hirose Technical Center 0 0 0 0 0 0
Consolidated subsidiaries 1,542 1,367 1,150 909 985 932
Landfill waste 280 191 117 290 316 313
Non-consolidated Head Office and Plant 0 0 0 0 0 0
Anjo Plant 0 0 0 0 0 0
Toyota Plant 0 0 0 0 0 0
Hirose Technical Center 0 0 0 0 0 0
Consolidated subsidiaries 280 191 117 290 316 313
Total Including consolidated subsidiaries 4,937 3,663 3,067 2,512 2,686 2,611

Data covers production sites of Aisan Industry and its consolidated subsidiaries, as well as Hirose Technical Center.

Amount of waste (by type)

Unit: t

2019 2020 2021 2022 2023 2024
Industrial waste 1,294 866 901 713 711 707
Non-consolidated Head Office and Plant 396 153 212 142 153 95
Anjo Plant 676 520 454 413 429 535
Toyota Plant 222 187 199 139 108 77
Hirose Technical Center 0 6 36 19 21 0
Specially controlled industrial waste 0 44 64 35 31 54
Non-consolidated Head Office and Plant 0 32 49 24 21 20
Anjo Plant 0 7 8 6 4 2
Toyota Plant 0 5 7 5 6 8
Hirose Technical Center 0 0 0 0 0 24
Total 1,294 910 965 748 742 761

Data covers Aisan Industry on a non-consolidated basis.

Waste disposal cost

Unit: 1 million yen

2019 2020 2021 2022 2023 2024
Waste disposal cost 253 285 229 284 333 348
Non-consolidated 39 24 25 21 20 23
Consolidated subsidiaries 214 261 204 263 313 325

Data covers Aisan Industry and its consolidated subsidiaries.

Water

Amount of water taken

Unit: m3

2019 2020 2021 2022 2023 2024
Surface water 0 0 0 0 0 0
Groundwater 406,119 307,628 262,631 247,382 244,407 231,371
Non-consolidated Head Office and Plant 159,288 118,976 77,311 59,487 68,119 64,588
Anjo Plant 174,948 132,914 126,836 114,881 99,790 99,877
Toyota Plant 0 0 0 0 0 0
Hirose Technical Center 0 0 0 0 0 0
Consolidated subsidiaries 71,883 55,738 58,484 73,014 76,498 66,906
Tap water 78,859 68,073 68,296 61,290 53,525 56,064
Non-consolidated Head Office and Plant 31,428 28,840 29,202 24,538 22,585 22,392
Anjo Plant 15,268 9,655 8,296 7,157 5,694 7,685
Toyota Plant 31,695 29,128 30,291 29,089 24,310 24,953
Hirose Technical Center 468 450 507 506 936 1,034
Consolidated subsidiaries 97,840 92,365 92,565 98,931 105,571 96,977
Sea water 0 0 0 0 0 0
Production associated water 0 0 0 0 0 0
Third party water (Industrial water) 39,254 41,267 43,107 37,398 37,263 40,389
Non-consolidated Head Office and Plant 0 0 0 0 0 0
Anjo Plant 7,507 7,893 8,323 6,658 6,593 6,004
Toyota Plant 0 0 0 0 0 0
Hirose Technical Center 0 0 0 0 0 0
Consolidated subsidiaries 31,747 33,374 34,784 30,740 30,670 34,385
Total Non-consolidated 420,602 327,856 280,766 242,316 ★ 228,027 ★ 226,533
Including consolidated subsidiaries 622,072 509,333 466,600 445,000 440,766 424,800

Data covers production sites of Aisan Industry and its consolidated subsidiaries, as well as Hirose Technical Center.

★: Third-party verification values

Amount of drainage

Unit: m3

2019 2020 2021 2022 2023 2024
Surface water 0 0 0 0 0 0
Groundwater 0 0 0 0 0 0
Sea water (River) 355,947 277,256 242,574 212,826 114,569 161,792
Non-consolidated Head Office and Plant 118,294 82,795 51,919 42,735 36,961 26,887
Anjo Plant 220,696 182,353 178,230 159,272 66,935 123,897
Toyota Plant 16,957 12,108 12,425 10,819 10,673 11,008
Third party water (sewage) 28,392 31,150 39,558 42,008 39,716 32,388
Non-consolidated Head Office and Plant 28,392 31,150 39,558 42,008 39,716 32,388
Anjo Plant 0 0 0 0 0 0
Toyota Plant 0 0 0 0 0 0
Total 384,339 308,406 282,132 254,834 154,285 194,180

Data covers Aisan Industry on a non-consolidated basis.

Environmental management

Number of companies acquired ISO14001 certification/Acquisition rate

Unit 2024
Number of production companies companies 15
Number of acquired companies companies 10
Percentage of acquired companies % 67

Data covers production sites of Aisan Industry and its consolidated subsidiaries.

Violations of environmental laws and regulations (penalties/fines)

Unit 2024
Violation of law number of cases 0

Data covers Aisan Industry and its consolidated subsidiaries.

Plant-level data

Head Office and Plant

Water quality

Measurement items Unit Regulation Value Voluntary standard value 2022 2023 2024
pH ー 5.8～8.6 6.1～8.3 7.0 7.1 7.2
BOD mg/L 20 16 3.2 2.6 2.3
COD mg/L 120 12.6 1.4 1.7 2.3
SS mg/L 20 16 2 2 1
n-Hex mg/L 5 4 0.5 ND 0.5
Zinc mg/L 2 1.6 0.08 0.07 0.07
Copper mg/L 1 0.8 ND ND ND
Iron mg/L 5 4 0.3 0.2 0.1
Total nitrogen mg/L 60 12.6 3.2 2.8 2.7
Total phosphorus mg/L 8 1.52 0.01 0.02 0.03
Total chromium mg/L 2 1.6 ND ND ND

Atmosphere

Measurement items Facilities Unit Regulation Value Voluntary standard value 2022 2023 2024
Nox*1 Boiler ppm 150 120 48 38 34
t - - 4.1 3.5 3.2
Soot and dust Boiler g/Nm3 0.01 0.008 0.003 0.003 0.002
t - - 0.12 0.09 0.09
SOx Not applicable because there are no SOx source facilities
VOC - t - - 61 108 70
  • Figures for FY2022 - 2023 have been revised.

Anjo Plant

water quality

Measurement items Unit Regulation Value Voluntary standard value 2022 2023 2024
pH ー 6.5～8.5 6.6～8.2 7.4 7.2 7.3
BOD mg/L 10 8 1.9 2.1 1.5
COD mg/L 120 40.2 1.5 1.6 1.5
SS mg/L 5 4 1 2 1
n-Hex mg/L 3 2.4 0.5 0.5 0.6
Total nitrogen mg/L 60 29.2 1.9 1.7 1.5
Total phosphorus mg/L 8 2.74 0.20 0.16 0.23
Coliform count pieces/cc 300 240 ND 35 ND

atmosphere

Measurement items Facilities Unit Regulation Value Voluntary standard value 2022 2023 2024
Nox*1 Boiler ppm 150 120 36 31 29
t - - 0.6 0.4 0.6
Electric melting furnace ppm 180 144 46 31 44
t - - 2.3 1.5 2.4
Soot and dust Boiler g/Nm3 0.1 0.08 0.002 0.002 0.001
t - - 0.01 0.01 0.01
SOx Not applicable because there are no SOx source facilities
VOC t - - 298 200 302
  • Figures for FY2022 - 2023 have been revised.

Toyota Plant

water quality

Measurement items Unit Regulation Value Voluntary standard value 2022 2023 2024
pH ー 5.8～8.6 6.1～8.3 7.9 7.8 7.6
BOD mg/L 10 8 1.2 1.6 0.9
COD mg/L 10 8 3.6 3.3 2.1
SS mg/L 10 8 1 1 1
n-Hex mg/L 2 1.6 ND ND ND
Total nitrogen mg/L 8 6.4 3.4 2.2 1.6
Total phosphorus mg/L 1 0.8 0.02 0.01 0.01
Zinc mg/L 1 0.8 0.01 0.01 0.01
Ammonia and ammonia compounds
Nitrous acid compound and nitric acid compound		 mg/L 10 8 2 1 1
Coliform count pieces/cc 3,000 2,400 ND ND ND

atmosphere

Measurement items Facilities Unit Regulation Value Voluntary standard value 2022 2023 2024
Nox*1 Boiler ppm 150 120 45 28 35
t - - 5.0 0.7 0.8
Soot and dust Boiler g/Nm3 0.1 0.08 0.002 0.002 0.002
t - - 0.176 0.024 0.026
SOx Not applicable because there are no SOx source facilities
VOC t - - 35 22 12
  • Figures for FY2022 - 2023 have been revised.

Reference Factors

For Fiscal Year 2024 Calculations

  Energy-related CO2 GHG Emissions
from Sources Other Than
Energy-related CO2		 Scope3
Scope1 Scope2 Category
Source / Document Title Electricity
Location-based		 Electricity
Market-based		 Heat 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Explanation of the Standard Calorific Value and Carbon Emissions Factors by Energy Source(Fiscal Year 2018 revised edition) / by The Agency for Natural Resources and Energy of Japan ● ●
Ministerial Ordinance on Calculation of Greenhouse Gas Emissions Arising from the Business Activities of Specified Emitters / by the Ministry of the Environment of Japan ● ●
Emissions Factors 2024 / by IEA ● ●
（Some sites）
Supplier-specific emission factors (basic emission factors) applied for specified emitters’ greenhouse gas emissions reporting in 2025 / by the Ministry of the Environment of Japan ●
（Japan）
Supplier-specific emission factors　*1 / by Electricity utility Outside of Japan　*1 ●
（Outside of Japan）
Greenhouse Gas Emissions Accounting and Reporting
Manual / by the Ministry of the Environment of Japan		 ●
Emissions Units Database ver.3.3 for Accounting for Organizations’ Greenhouse Gas Emissions, etc. Throughout the Supply Chain /by the Ministry of the Environment of Japan ●
Emissions Units Database ver.3.4 for Accounting for Organizations’ Greenhouse Gas Emissions, etc. Throughout the Supply Chain /by the Ministry of the Environment of Japan ● ● ● ●
LCI Database IDEA version 3.3 / by IDEA Laboratory, Research Institute of Science for Safety and Sustainability, National Institute
of Advanced Industrial Science and Technology (AIST)		 ● ● ●
LCI Database IDEA version 3.5.1 / by IDEA Laboratory, Research Institute of Science for Safety and Sustainability, National Institute
of Advanced Industrial Science and Technology (AIST)		 ●
Company-defined standards ● ● ●
  • For sites where these are unavailable, the emission factors for 2022
    from the Emissions Factors 2024 published by the IEA are used.

Third-party verification

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