Office-Specific Performance Data

Environment Environment

Office-Specific Performance Data

Updated August 2025

Office-Specific Performance Data

Fiscal 2024 Emissons of Main Substances and Percentage of Water Usage

Head office, sales offices

Year	Unit	Results	Results	Results	Results	Results	Target
Year	Unit	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
Year	Unit	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
Year	Unit	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
Year	Unit	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
Year	Unit	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
Year	Unit	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
Year	Unit	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
Year	Unit	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
Year	Unit	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
Year	Unit	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
Year	Unit	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
Year	Unit	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
Year	Unit	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
Year	Unit	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
Year	Unit	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
Year	Unit	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
Year	Unit	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
Year	Unit	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
Year	Unit	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
Year	Unit	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
Year	Unit	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
Year	Unit	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
Year	Unit	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
Year	Unit	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
Year	Unit	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 EnvironmentDenka is committed to global environmental preservation based on Responsible Care, an initiative promoted by the global chemical industry. As a responsible chemical manufacturer, Denka will continue to address the issues of global environmental preservation.

Environment

Achievement of Carbon Neutrality

Achievement of carbon neutrality

2050 Roadmap Efforts to Reduce Environmental Impact Efforts for Environmentally Conscious Products Environmental Accounting

Environment

Achievement of Carbon Neutrality

Our Approach to Environmental Management

Denka Group is committed to achieving its target of "net zero CO2 emissions" by 2050. To this end, we have set the interim target of reducing CO2 emissions by 60% from the fiscal year 2013 level by 2030.

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 greenhouse gases such as CO2...

Environment

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

Greenhouse gas emissions Zero emissions initiatives Information disclosure initiatives Fluorocarbons...

Environment

Climate change risks and opportunities

Addressing Risks and OpportunitiesRegarding the risks and opportunities posed by climate change, we will conduct scenario analysis based on the following two temperature rise scenarios: 1.5°C or less (Glasgow Climate Pact) and 4°C (business-as-usual).

Environment

Promoting the Use of Clean Energy

Efforts for clean energy

Expansion of renewable energy and introduction of environmentally friendly power generation technologies Certification of special measures for levies based on the Renewable Energy Special Measures Act ...

Environment

Promoting the Use of Clean Energy

In-house power generation facilities plants and maximum output

hydroelectric power plant (Map) *As of August 2025 / Including our joint venture company's power plant. Private power plant and maximum output (20...

Environment

Government Subsidies Related to the Environment and Energy

Subsidies for environmental energy

Use of environmental energy-related subsidies In our efforts to reduce environmental impact and promote energy conservation, we actively utilize subsidy programs from the Ministry of Economy, Trade and Industry and the Ministry of the Environment, etc.

Environment

Initiatives to Biodiversity Conservation

Our Approach to Biodiversity Initiatives for Biodiversity Participation in TNFD Forum ...

Environment

Preservation of Water Resources

Issues of the Company Group Specific Initiatives Water Resource Data Water Risk Assessment ...

Environment

Efforts to Promote Resource Circulation

Approach to resource recycling (circular economy) Chemical recycling ISCC PLUS certification ...

Environment

Environmental Accounting

Environmental accounting

Environmental conservation costs Environmental conservation effect Economic effect Environmental conservation costs ...

Environment

Overview of Environmental Impacts

Data Scope: Total of 8 locations of Denka head office (80% of Denka product sales manufactured) *Final disposal amount (landfill treatment) for FY2024...

Environment

Fiscal 2024 Environmental Performance Data

2024 Performance Data

Greenhouse gas emissions Renewable energy Main environmental impact (Head office and domestic group companies) Water resources Envi...

Environment

Office-Specific Performance Data

2024 Fiscal Year Main Substances Emitted and Water Used Ratios Head Office, Branch Offices Omi Plant Chiba Plant ...