Environment Environment

Office-Specific Performance Data

Updated August 2025

Office-Specific Performance Data

Fiscal 2024 Emissons of Main Substances and Percentage of Water Usage

Fiscal 2024 Emissons of Main Substances and Percentage of Water Usage

Head office, sales offices

Year Unit Results Results Results Results Results Target
2020年度 2021年度 2022年度 2023年度 2024年度 2025年度
CO 2 emissions (energy resources) 10,000 tons - - - 0.23 0.23 -
Water used ※ 1,000 m 3 - - - 0.03 0.03 -
Amount of industrial waste ※ ton - - - 6.34 0.99 -
Final disposal amount of waste ※ ton - - - 2.11 0.99 -
  • ※Head office only

Omi Plant

Year Unit Results Results Results Results Results Target
2020年度 2021年度 2022年度 2023年度 2024年度 2025年度
CO 2 emissions (energy resources) 10,000 tons 60 72 71 56 58 38
(CO 2 emissions compared to FY2013 base) 　 0.72 0.85 0.85 0.67 0.69 0.45
PRTR-subject substances ton 7 14 10 7 11 8
NOx ton 2,860 2,462 2,905 2,631 2,229 665
SOx ton 35 37 26 37 34 24
Soot and Dust Emissions ton 64 107 66 95 82 34
Water used 1,000 m 3 47,465 51,063 51,919 52,543 56,325 57,654
COD（BOD）Emissions ton 166 166 264 237 306 311
Amount of industrial waste ton 70,599 88,679 92,094 77,750 94,142 212,426
Final disposal amount of waste ton 0 0 0 0 0 0

Chiba Plant

Year Unit Results Results Results Results Results Target
2020年度 2021年度 2022年度 2023年度 2024年度 2025年度
CO 2 emissions (energy resources) 10,000 tons 22 24 18 17 19 19
(CO 2 emissions compared to FY2013 base) 　 0.67 0.72 0.55 0.52 0.58 0.58
PRTR-subject substances ton 52 60 44 64 68 60
NOx ton 156 162 127 149 163 160
SOx ton 5 7 6 4 6 6
Soot and Dust Emissions ton 2 1 1 1 1 2
Water used 1,000 m 3 3,615 3,742 3,174 3,168 3,300 3,485
COD（BOD）Emissions ton 10 14 10 11 10 10
Amount of industrial waste ton 10,582 11,909 9,310 8,091 8,284 8,990
Final disposal amount of waste ton 7 4 2 2 2 2

Omuta Plant

Year Unit Results Results Results Results Results Target
2020年度 2021年度 2022年度 2023年度 2024年度 2025年度
CO 2 emissions (energy resources) 10,000 tons 10 10 8 8 8 11
(CO 2 emissions compared to FY2013 base) 　 0.74 0.73 0.60 0.63 0.63 0.87
PRTR-subject substances ton 4 4 3 3 3 3
NOx ton 659 758 709 794 662 721
SOx ton 1 0 0 0 0 0
Soot and Dust Emissions ton 1 1 1 1 1 2
Water used 1,000 m 3 1,320 1,448 1,364 1,266 1,208 1,270
COD（BOD）Emissions ton 1 1 1 1 1 1
Amount of industrial waste ton 19,012 17,587 17,703 16,861 14,307 12,065
Final disposal amount of waste ton 13 47 26 22 20 15

Shibukawa Plant

Year Unit Results Results Results Results Results Target
2020年度 2021年度 2022年度 2023年度 2024年度 2025年度
CO 2 emissions (energy resources) 10,000 tons 0.8 1 0.8 0.7 0.8 0.8
(CO 2 emissions compared to FY2013 base) 　 1.16 1.45 1.17 1.08 1.18 1.17
PRTR-subject substances ton 5 5 3 4 4 4
NOx ton 9 10 6 4 4 4
SOx ton 1 1 1 1 1 1
Soot and Dust Emissions ton 0 0 0 0 0 0
Water used 1,000 m 3 1,302 1,302 1,305 1,310 1,304 1,304
COD（BOD）Emissions ton 2 2 1 1 1 1
Amount of industrial waste ton 676 686 559 453 331 298
Final disposal amount of waste ton 33 0 0 0 0 0

Ofuna Plant

Year Unit Results Results Results Results Results Target
2020年度 2021年度 2022年度 2023年度 2024年度 2025年度
CO 2 emissions (energy resources) 10,000 tons 0.6 0.8 0.6 0.5 0.5 -
(CO 2 emissions compared to FY2013 base) 　 0.87 1.01 0.78 0.71 0.71 -
PRTR-subject substances ton 1 1 0 1 0 0
NOx ton 1 1 0 1 1 0
SOx ton 0 0 0 0 0 0
Soot and Dust Emissions ton 0 0 0 0 0 0
Water used 1,000 m 3 39 36 36 31 26 18
COD（BOD）Emissions ton 0 0 0 0 0 0
Amount of industrial waste ton 343 263 192 209 236 187
Final disposal amount of waste ton 1 1 1 1 3 2

Isesaki Plant

Year Unit Results Results Results Results Results Target
2020年度 2021年度 2022年度 2023年度 2024年度 2025年度
CO 2 emissions (energy resources) 10,000 tons 1.5 1.9 1.4 1.3 1.5 1.5
(CO 2 emissions compared to FY2013 base) 　 0.85 1.1 0.79 0.73 0.85 0.85
PRTR-subject substances ton 0 0 0 0 0 0
NOx ton 0 0 0 0 0 0
SOx ton 0 0 0 0 0 0
Soot and Dust Emissions ton 0 0 0 0 0 0
Water used 1,000 m 3 408 400 380 356 380 400
COD（BOD）Emissions ton 0 0 0 0 0 0
Amount of industrial waste ton 690 632 276 236 249 430
Final disposal amount of waste ton 0 0 0 0 0 0

Gosen Site (former Denka Seiken)

Year Unit Results Results Results Results Results Target
2020年度 2021年度 2022年度 2023年度 2024年度 2025年度
CO 2 emissions (energy resources) 10,000 tons 2.3 2.3 2.3 1.9 1.9 2.1
(CO 2 emissions compared to FY2013 base) 　 1.44 1.44 1.48 1.23 1.23 1.36
PRTR-subject substances ton 0 0 0 0 0 0
NOx ton 1 1 0 0 0 0
SOx ton 0 0 0 0 0 0
Soot and Dust Emissions ton 0 0 0 0 0 0
Water used 1,000 m 3 214 260 266 205 202 202
COD（BOD）Emissions ton 0 0 0 0 0 0
Amount of industrial waste ton 1,118 1,102 1,488 1,161 1,077 1,077
Final disposal amount of waste ton 18 10 20 19 24 24

Denka Innovation Center (Laboratory)

Year Unit Results Results Results Results Results Target
2020年度 2021年度 2022年度 2023年度 2024年度 2025年度
CO 2 emissions (energy resources) 10,000 tons 0.1 0.2 0.2 0.2 0.2 0.2
PRTR-subject substances ton 0 0 0 0 0 0
NOx ton 0 0 0 0 0 0
SOx ton 0 0 0 0 0 0
Soot and Dust Emissions ton 0 0 0 0 0 0
Water used 1,000 m 3 7 6 7 9 9 9
COD（BOD）Emissions ton 0 0 0 0 0 0
Amount of industrial waste ton 84 70 66 87 102 102
Final disposal amount of waste ton 0 0 1 1 7 7

Denka Singapore Merbau Plant

Year Unit Results Results Results Results Results Target
2020年度 2021年度 2022年度 2023年度 2024年度 2025年度
CO 2 emissions (energy resources) 10,000 tons 0.4 0.3 0.4 0.4 0.4 0.4
NOx ton 0.5 0.5 0.5 0.5 0.7 0.9
SOx ton 0 0 0 0 0 0
Soot and Dust Emissions ton 0 0 0 0 0 0
Water used 1,000 m 3 59 62 56 50 132 130
COD（BOD）Emissions ton 0.1 0.1 0.1 0.1 0.7 0.7
Amount of industrial waste ton 194 130 279 249 362 361
Final disposal amount of waste ton 0 0 0 0 20 18

Denka Advanced Materials Vietnam Plant

Year Unit Results Results Results Results Results Target
2020年度 2021年度 2022年度 2023年度 2024年度 2025年度
CO 2 emissions (energy resources) 10,000 tons 0.2 0.4 0.4 0.4 1.0 1.0
NOx ton 0 0 0 0 0 0
SOx ton 0 0 0 0 0 0
Soot and Dust Emissions ton 0 0 0 0 0 0
Water used 1,000 m 3 18 21 25 25 23 23
COD（BOD）Emissions ton 0 0 0 0 0 0
Amount of industrial waste ton 115 261 276 288 274 273
Final disposal amount of waste ton 38 85 76 102 77 77

Denka Singapore Seraya Plant

Year Unit Results Results Results Results Results Target
2020年度 2021年度 2022年度 2023年度 2024年度 2025年度
CO 2 emissions (energy resources) 10,000 tons 3.7 3.5 3.0 3.0 3.2 2.9
NOx ton 4.7 4.7 3.9 4.3 3.8 4.6
SOx ton 0.9 0.9 0.7 0.8 0.7 0.9
Soot and Dust Emissions ton 0 0 0 0 0 0
Water used 1,000 m 3 188 149 115 136 142 152
COD（BOD）Emissions ton 2.8 2.7 2.4 2.4 2.3 2.4
Amount of industrial waste ton 1,563 1,027 749 693 710 657
Final disposal amount of waste ton 36 27 17 19 20 18

Denka Construction Solutions Malaysia

Year Unit Results Results Results Results Results Target
2020年度 2021年度 2022年度 2023年度 2024年度 2025年度
CO 2 emissions (energy resources) 10,000 tons 0.02 0.02 0.02 0.02 0.03 0.02
NOx ton 0 0 0 0 0 0
SOx ton 0 0 0 0 0 0
Soot and Dust Emissions ton 0 0 0 0 0 0
Water used 1,000 m 3 3.4 3.8 4 3 3 4
COD（BOD）Emissions ton 0 0 0 0 0 0
Amount of industrial waste ton 255 214 215 305 509 464
Final disposal amount of waste ton 255 211 210 300 504 458

Denka Advantech Tuas Plant

Year Unit Results Results Results Results Results Target
2020年度 2021年度 2022年度 2023年度 2024年度 2025年度
CO 2 emissions (energy resources) 10,000 tons 1.4 1.4 1.7 1.6 1.2 1.0
NOx ton 386.4 586.8 516.7 296 193.9 227.5
SOx ton 0 0 0 0 0 0
Soot and Dust Emissions ton 0 0 0 0 0 0
Water used 1,000 m 3 62 102 88 74 57 67
COD（BOD）Emissions ton 0 0 0 0 0 0
Amount of industrial waste ton 219 281 261 277 231 271
Final disposal amount of waste ton 200 263 243 261 216 253

Denka Performance Elastomer

Year Unit Results Results Results Results Results Target
2020年度 2021年度 2022年度 2023年度 2024年度 2025年度
CO 2 emissions (energy resources) 10,000 tons 9.5 7.6 9.3 10.1 13.6 -
NOx ton 84 90 104 95 77 95
SOx ton 1 1 1 1 1 1
Soot and Dust Emissions ton 9 9 10 9 8 9
Water used 1,000 m 3 53,621 47,892 44,909 62,815 63,014 63,014
COD（BOD）Emissions ton 0 0 0 0 0 0
Amount of industrial waste ton 1,099 1,216 1,826 2,204 1,889 2,204
Final disposal amount of waste ton 1,079 1,180 1,758 2,617 1,614 1,844

Denka Advantech South Plant

Year Unit Results Results Results Results Results Target
2020年度 2021年度 2022年度 2023年度 2024年度 2025年度
CO 2 emissions (energy resources) 10,000 tons 0.1 0.3 0.2 0.1 0.2 0.2
NOx ton 0.7 1.6 0.8 1 0.4 0.5
SOx ton 0 0 0 0 0 0
Soot and Dust Emissions ton 0 0.1 0 0.0 0.0 0.0
Water used 1,000 m 3 5 8 6 6 6 8
COD（BOD）Emissions ton 0 0 0 0 0 0
Amount of industrial waste ton 154 189 139 146 152 197
Final disposal amount of waste ton 10 20 17 7 8 10

Denka Advanced Materials (Suzhou)

Year Unit Results Results Results Results Results Target
2020年度 2021年度 2022年度 2023年度 2024年度 2025年度
CO 2 emissions (energy resources) 10,000 tons 0.1 0.1 0.1 0.1 0.0 0.1
NOx ton 0 0 0 0 0 0
SOx ton 0 0 0 0 0 0
Soot and Dust Emissions ton 0 0 0 0 0 0
Water used 1,000 m 3 1.7 1.5 1.3 1.3 1.3 1.4
COD（BOD）Emissions ton 0 0 0 0 0 0
Amount of industrial waste ton 0.5 0.5 0.4 0.9 0.9 0.8
Final disposal amount of waste ton 0.03 0.02 0.02 0.03 0.03 0.03

Denka Inorganic Materials (Tianjin)

Year Unit Results Results Results Results Results Target
2020年度 2021年度 2022年度 2023年度 2024年度 2025年度
CO 2 emissions (energy resources) 10,000 tons 0.00 0.01 0.01 0.01 0.01 0.01
NOx ton 0 0 0 0 0 0
SOx ton 0 0 0 0 0 0
Soot and Dust Emissions ton 0 0 0 0 0 0
Water used 1,000 m 3 1.0 0.7 0.7 0.6 0.9 0.8
COD（BOD）Emissions ton 0 0 0 0 0 0
Amount of industrial waste ton 0.6 0.6 0.5 0.5 2.8 4.0
Final disposal amount of waste ton 0.03 0.03 0.03 0.03 0.00 0.00

Denka Chemicals Development Suzhou

Year Unit Results Results Results Results Results Target
2020年度 2021年度 2022年度 2023年度 2024年度 2025年度
CO 2 emissions (energy resources) 10,000 tons 0.02 0.02 0.01 0.02 0.02 0.02
NOx ton 0 0 0 0 0 0
SOx ton 0 0 0 0 0 0
Soot and Dust Emissions ton 0 0 0 0 0 0
Water used 1,000 m 3 0.4 0.5 0.4 0.5 0.4 0.4
COD（BOD）Emissions ton 0 0 0 0 0 0
Amount of industrial waste ton 16 19 20 9 1 2
Final disposal amount of waste ton 2 0 7 7 0 0

Denka Electronic Materials Dailan

Year Unit Results Results Results Results Results Target
2020年度 2021年度 2022年度 2023年度 2024年度 2025年度
CO 2 emissions (energy resources) 10,000 tons 0.07 0.08 0.09 0.11 0.11 0.11
NOx ton 0 0 0 0 0 0
SOx ton 0 0 0 0 0 0
Soot and Dust Emissions ton 0 0 0 0 0 0
Water used 1,000 m 3 0.3 0.2 0.2 0.2 0.3 0.3
COD（BOD）Emissions ton 0 0 0 0 0 0
Amount of industrial waste ton 6.6 8.0 5.8 4.8 4.3 3.2
Final disposal amount of waste ton 0.2 0.2 0.2 0.1 0.1 0.1

Hinode Kagaku Kogyo

Year Unit Results Results Results Results Results Target
2020年度 2021年度 2022年度 2023年度 2024年度 2025年度
CO 2 emissions (energy resources) 10,000 tons 1.9 1.8 1.8 1.2 1.3 1.3
PRTR-subject substances ton 2 4 3 2 3 2
NOx ton 135 119 139 74 73 72
SOx ton 147 129 123 83 81 80
Soot and Dust Emissions ton 7 5 6 4 4 4
Water used 1,000 m 3 1,233 1,360 1,101 956 1,013 1,000
COD（BOD）Emissions ton 2 2 1 1 1 1
Amount of industrial waste ton 56 36 36 114 267 350
Final disposal amount of waste ton 4 3 3 4 3 3

Denka Azumin

Year Unit Results Results Results Results Results Target
2020年度 2021年度 2022年度 2023年度 2024年度 2025年度
CO 2 emissions (energy resources) 10,000 tons 0.5 0.5 0.5 0.4 0.3 0.3
PRTR-subject substances ton 0 0 0 0 0 0
NOx ton 20 24 29 20 20 20
SOx ton 1 1 1 1 0 0
Soot and Dust Emissions ton 2 0 0 0 0 0
Water used 1,000 m 3 603 602 602 604 603 604
COD（BOD）Emissions ton 1 1 2 2 2 2
Amount of industrial waste ton 80 66 47 45 53 53
Final disposal amount of waste ton 0.2 0.3 0.2 0.3 0.5 0.5

Denka Polymer

Year Unit Results Results Results Results Results Target
2020年度 2021年度 2022年度 2023年度 2024年度 2025年度
CO 2 emissions (energy resources) 10,000 tons 0.8 1.0 0.8 0.8 0.9 1.0
PRTR-subject substances ton 0 0 0 0 0 0
NOx ton 0 0 0 0 0 0
SOx ton 0 0 0 0 0 0
Soot and Dust Emissions ton 0 0 0 0 0 0
Water used 1,000 m 3 28 30 32 36 36 28
COD（BOD）Emissions ton 0 0 0 0 0 0
Amount of industrial waste ton 261 293 172 219 172 167
Final disposal amount of waste ton 0 0 0 0 0 0

Kyushu Plastic Industry

Year Unit Results Results Results Results Results Target
2020年度 2021年度 2022年度 2023年度 2024年度 2025年度
CO 2 emissions (energy resources) 10,000 tons 0.2 0.2 0.2 0.2 0.2 0.2
PRTR-subject substances ton 6 7 7 7 3 0
NOx ton 0 0 0 0 0 0
SOx ton 0 0 0 0 0 0
Soot and Dust Emissions ton 0 0 0 0 0 0
Water used 1,000 m 3 171 159 151 169 141 170
COD（BOD）Emissions ton 0 0 0 0 0 0
Amount of industrial waste ton 76 71 68 64 79 80
Final disposal amount of waste ton 29 16 11 8 24 20

Denka Elastlution

Year Unit Results Results Results Results Results Target
2020年度 2021年度 2022年度 2023年度 2024年度 2025年度
CO 2 emissions (energy resources) 10,000 tons 0.05 0.06 0.06 0.05 0.05 0.05
PRTR-subject substances ton 0 0 0 0 0 0
NOx ton 0 0 0 0 0 0
SOx ton 0 0 0 0 0 0
Soot and Dust Emissions ton 0 0 0 0 0 0
Water used 1,000 m 3 73 73 74 74 74 72
COD（BOD）Emissions ton 0 0 0 0 0 0
Amount of industrial waste ton 61 66 57 66 70 67
Final disposal amount of waste ton 5 0 0 0 0 0

Denka Astec (formerly Nakagawa Techno)

Year Unit Nakagawa Techno Denka Astec
Results Results Results Results Results Target
2020年度 2021年度 2022年度 2023年度 2024年度 2025年度
CO 2 emissions (energy resources) 10,000 tons 0.006 0.005 0.005 0.006 0.005 0.005
PRTR-subject substances ton 0.1 0.1 0.1 0.1 0.1 0.1
NOx ton 0 0 0 0 0 0
SOx ton 0 0 0 0 0 0
Soot and Dust Emissions ton 0 0 0 0 0 0
Water used 1,000 m 3 0.4 0.3 0.3 0.3 0.4 0.4
COD（BOD）Emissions ton 0 0 0 0 0 0
Amount of industrial waste ton 4.5 17.5 4.3 4.3 4.3 4.3
Final disposal amount of waste ton 4.3 17.5 4.3 4.3 4.3 4.3
DFF Inc., Denka Company Limited CSR and Public Relations Office, Denka Company Limited IR Office, Seiwa Business Link
Environment
Environmental Policies

Environmental Policy

Consideration for the global environment Support for the RC World Charter (2014 version) ...

Denka Company Limited CSR and Public Relations Office, Denka...
Environment
Achievement of Carbon Neutrality

Achievement of carbon neutrality

2050 Roadmap Initiatives for Reducing Environmental Footprint ...

Denka Company Limited CSR and Public Relations Office, Denka...
Environment
The Denka Group's Policies on the Prevention of Environmental Pollution

Policy on Prevention of Environmental Pollution

Denka accurately understands the environmental burden substances emitted from the production facilities of Group companies and is working on their continuous reduction. The substances targeted include CO2,...

Denka Company Limited CSR and Public Relations Office, Denka...
Environment
Initiatives Aimed at Curbing GHG Emissions and Reduction Targets for GHG Emissions

Initiatives Aimed at Curbing GHG Emissions and Reduction Targets for GHG Emissions

Greenhouse Gas Emissions Zero emissions initiatives ...

Denka Company Limited CSR and Public Relations Office, Denka...
Environment
Climate change risks and opportunities

Climate change risks and opportunities

Addressing risks and opportunities Addressing risks and opportunities

Denka Company Limited CSR and Public Relations Office, Denka...
Environment
Promoting the Use of Clean Energy

Efforts for clean energy

Expansion of renewable energy and introduction of environmentally friendly power generation technologies In accordance with the...

Denka Company Limited CSR and Public Relations Office, Denka...
Environment
Government Subsidies Related to the Environment and Energy

Subsidies for environmental energy

Use of subsidies for environmental energy-related etc.

Denka Company Limited CSR and Public Relations Office, Denka...
Environment
Initiatives to Biodiversity Conservation

Initiatives to Biodiversity Conservation

Company's Approach to Biodiversity The Company recognizes that biodiversity is the basis of the ecosystem that supports human life and corporate activities. The Company also recognizes that the loss of biodiversity due to human activities is a serious global issue. Therefore, the Company is committed to protecting biodiversity and promoting the sustainable use of biological resources in its corporate activities. The Company will also contribute to the conservation of biodiversity through its business activities.

Denka Company Limited CSR and Public Relations Office, Denka...
Environment
Preservation of Water Resources

Preservation of Water Resources

Our Group's Issues Specific Initiatives Water Resource Data ...

Denka Company Limited CSR and Public Relations Office, Denka...
Environment
Efforts to Promote Resource Circulation

Efforts to Promote Resource Circulation

Approach to Resource Circulation (Circular Economy) Chemical Recycling ...

Denka Company Limited CSR and Public Relations Office, Denka...
Environment
Environmental Accounting

Environmental accounting

Environmental conservation costs Environmental conservation effects Economic effects ...

Denka Company Limited CSR and Public Relations Office, Denka...
Environment
Overview of Environmental Impacts

Overview of Environmental Impacts

Data Scope: 8 locations of Denka's head office (80% of Denka product sales are manufactured) ...

DFF, Denka Company Limited...
Environment
Fiscal 2024 Environmental Performance Data

2024 Performance Data

Greenhouse gas emissions Renewable energy Major environmental...

Denka Company Limited CSR and Public Relations Office, Denka...
Environment
Office-Specific Performance Data

Office-Specific Performance Data

2024 Fiscal Year Main Substances Emitted and Water Used Ratio Head Office, Branch Offices ...

Denka Company Limited CSR and Public Relations Office, Denka...