The Asahi Kasei Group publishes cost and performance data concerning its environmental activities.
Investment for Environmental Protection and Safety
The Asahi Kasei Group has invested the necessary management resources in ESH & QA activities.
Investments in environmental protection and safety-related facilities up to fiscal 2021 and in fiscal 2021 are shown below.
Investment in environmental preservation and safety modification
Investments in environmental protection-related facilities (fiscal 2021)
Investments in safety-related facilities (fiscal 2021)
We classify the cost of our measures for environmental protection in accordance with cost classification standards promulgated by the Ministry of the Environment.
Environmental accounting by fiscal year
|1||Combined operation area||3,780||9,303||1,942||11,183||3,905||10,089||3,628||7,666||2,755||9,914|
|Global environmental protection||929||841||807||1,230||1,221||773||1,246||689||1,069||955|
|2||Upstream and downstream||0||117||0||140||0||115||0||102||0||104|
Eco-efficiency (JEPIX) performance*
- *JEPIX is an abbreviation for the "Japan Environmental Policy Index", and it was developed by teams under the leadership of Professor Nobuyuki Miyazaki of the International Christian University at the Japan Science and Technology Agency and Sustainable Management Forum Japan. Environmental performance data are converted to an environmental impact point (EIP) scale and aggregated to determine total environmental impact. Eco-efficiency is calculated as follows.
Eco-efficiency = value added (economic index) / JEPIX Eco-Points
Eight aspects of environmental impact (including chemical releases, greenhouse gas emissions, landfill wastes, and COD load) are evaluated, and net sales are used for value added. A new accounting policy is applied to net sales from fiscal 2011.
|Total environmental impact (million EIP)||50,723||11,524||9,770||10,562||9,410||10,337|
|Net sales (¥ million)||1,195,393||2,042,216||2,170,403||2,151,646||2,106,051||2,461,317|
Greenhouse gas emissions in Japan by fiscal year
(million tons CO2 equivalent)
|Item||Index set at Kyoto Protocol
- ・Calculation standards for greenhouse gas emissions:
For greenhouse gases covered by the Act on Rationalizing Energy Use and the Act on Promotion of Global Warming Countermeasures, calculations are in accordance with the methods stipulated by these laws. For gases not covered by either law, calculation methods are based on considerations such as chemical reactions.
- ・CO2 emissions from generation of electricity and steam sold to other companies are excluded from data for the baseline year but included in annual data from fiscal 2013.
- ・ We have used 'basic' CO2 emission factors for electricity purchased in Japan until FY2019, but we have opted to use 'adjustedʼCO2 emission factors from FY2020 onwards. The impact of this change on CO2 emissions is immaterial.
Overseas greenhouse gas emissions by fiscal year
(million tons CO2 equivalent)
- ・Calculation standards for overseas greenhouse gas emissions:
Overseas greenhouse gas emissions are calculated, in principle, based on the provisions given by the Act on the Rational Use of Energy and the Act on Promotion of Global Warming Countermeasures. Until FY2020, CO2 emissions from the burning of by-product gases are mainly calculated by material balance. CO2 emissions associated with purchased electricity are calculated with the latest available coefficients given in International Energy Agency's Emissions Factors, but in order to calculate GHG emissions that more reflect factual circumstances, we applied emission factors with the following priority order: 1) emission factors of individual power companies, 2) values set by national governments, and 3) International Energy Agency's Emissions Factors from FY2021.
FY2021 global greenhouse gas emissions by segment
(million tons CO2 equivalent)
Scope 3 emissions by fiscal year
(million tons CO2 equivalent)
|1||Purchased goods and services||4.54||4.74||4.43||4.62||4.72|
|3||Fuel and energy-related activities (not included in Scope 1 or Scope 2)
|4||Upstream transportation and distribution||0.28||0.30||0.27||0.25||0.24|
|5||Waste generated in operations||0.00||0.00||0.00||0.00||0.07|
|8||Upstream leased assets||0.00||0.00||0.00||0.00||0.00|
|9||Downstream transportation and distribution||-||-||-||-||-|
|10||Processing of sold products||-||-||-||-||-|
|11||Use of sold products||1.00||0.92||0.96||1.34||1.92|
|12||End-of-life treatment of sold products||4.84||4.98||4.70||5.87||5.95|
|13||Downstream leased assets||-||-||-||-||-|
- ・ Calculation method for Scope 3:
Our Scope 3 GHG emissions are calculated using the Corporate Value Chain (Scope 3) Accounting and Reporting Standard and its technical guidance issued by the Greenhouse Gas Protocol. For the greenhouse gas emission factors, we used data available in the Carbon Footprint Communication Program database prepared by the Japan Environmental Management Association for Industry and the Embodied Energy and Emission Intensity Data for Japan Using Input-Output Tables (3EID): Inventory Data for LCA prepared by the National Institute for Environmental Studies, Japan until FY2019.
Since FY2020, we have referred to the Embodied Energy and Emission Intensity Data for Japan Using Input-Output Tables (3EID) (2015): Inventory Data for LCA prepared by the National Institute for Environmental Studies, Japan, IDEA v2.3 by the National Institute of Advanced Industrial Science and Technology, and the Emissions Unit Value Database Ver3.2 for Accounting of Greenhouse Gas Emissions, etc., by Organizations Throughout the Supply Chain issued by the Ministry of the Environment, etc.
- ・ Calculation method for purchased goods and services:
Items with emissions equal to or greater than 4,000 tons of CO2-equivalent were included. The emissions were calculated by multiplying the amounts, either in physical or monetary units, of raw materials and services purchased from outside the Asahi Kasei Group by Asahi Kasei Corp., Asahi Kasei Homes, Asahi Kasei Construction Materials, Asahi Kasei Microdevices, and Asahi Kasei Medical by the respective emission factor for each type of raw material or service.
- ・Calculation method for waste generated in operations:
From FY2021, the activity volume was changed from final disposal volume to effluent volume.
- ・ Calculation method for use of sold products:
Until FY2020, the calculation was based on the calculation standards set by Asahi Kasei Homes and using the emissions intensity of Housing Tech. R&D Labs. report, the period covered by the calculation was calculated based on the number of Hebel houses (detached houses and apartment buildings) delivered in each fiscal year (before FY2020, based on the number of houses delivered; in FY2020, based on the total floor area of Hebel houses delivered). The calculation period was set to 60 years of useful life, and the CO2 emissions reduction effect based on the actual installation of energy-saving equipment, which differs in each case, was deducted from the calculation.
In FY2021, the following calculations were made using Building Research Institute's "Energy Consumption Performance Calculation Program (Residential Version)" for house for which a certificate of confirmation was issued during the fiscal year.
∑ (annual energy use by energy type per household x emission factor by energy type) x useful life (60 years)
Emission factor by energy type
*Emission factor: Electricity 0.453 (t-CO2/thousand kWh), City gas 0.05 (t-CO2/GJ), Kerosene 0.068 (t-CO2/GJ)
If calculated using the conventional method, Category 11 emissions in FY2021 would be 1.37 million tons CO2-eq.
- ・ Calculation method for disposal of sold products:
For Asahi Kasei, Asahi Kasei Construction Materials, and Asahi Kasei Medical, emissions are calculated by multiplying the weight of products shipped each fiscal year by the CO2 emission factor at the time of disposal for each product.
For Asahi Kasei Homes, emissions are calculated by multiplying the number of Hebel Haus units delivered each fiscal year by the CO2 emission factor per building.
- Note:In fiscal 2018, we revised some of the calculation methods for upstream transportation/distribution and disposal of sold products so that they are based on the actual situation. Past results have been adjusted retroactively.
Past results have been revised due to an error in the quantity of purchased goods and services in FY2020. Emissions before correction are as follows.
(Category 1 : 4.53 million tons CO2-eq, Category 4 : 0.24 million tons CO2-eq, Category 12 : 5.68 million tons CO2-eq, Total : 12.99 million tons CO2-eq）
CO2 emissions from product shipment (FY2021)
(Number of vehicles)
|Used on public roads||Low-pollution vehicles||1,270||1,252||1,295||1,415||1,506|
|Used within plant grounds||Low-pollution vehicles||534||492||451||726||764|
|Proportion of low-pollution vehicles
|Used on public roads||93||94||94||97||97|
|Used within plant grounds||68||68||68||92||91|
- Note:Hybrid-electric vehicles, low-emission vehicles, fuel-efficient vehicles, and all-electric vehicles
Pollution and Natural Resources / Water Resource Preservation
Treatment and disposal of industrial waste by company
|Company||Waste generated||Recycling||Volume reduction||Landfill||Effluent||Recycling||Volume reduction||Final disposal||Coverage (%)|
|Asahi Kasei Corp.||242.5||48.0||0.7||0.0||193.7||191.8||1.7||0.3||-|
|Asahi Kasei Microdevices||7.9||0.0||0.0||0.0||7.9||7.9||0.1||0.0||-|
|Asahi Kasei Homes||4.8||0.0||0.0||0.0||4.8||4.8||0.0||0.0||-|
|Asahi Kasei Construction Materials||64.1||39.9||0.0||0.0||24.3||24.3||0.0||0.0||-|
|Asahi Kasei Pharma||1.5||0.0||0.0||0.0||1.5||1.5||0.0||0.0||-|
|Asahi Kasei Medical||5.5||0.0||0.0||0.0||5.5||5.5||0.0||0.0||-|
- ・Not including waste generated from non-recurring events such as dismantling closed plants or waste generated from dismantling old homes when constructing new homes.
- ・Sums of figures may differ totals shown due to rounding(also in other tables hereinafter).
Final disposal by category of waste
(Excluding waste generated at the construction sites of Asahi Kasei Homes)
|Category||Disposal volume (thousand tons)||Percentage (%)|
|Industrial waste containing asbestos||0.057||19.1|
|Inert mixed wastes||0.040||13.3|
|Glass & ceramic fragments||0.029||9.6|
Asahi Kasei Group treatment and disposal of industrial waste
|Disposal breakdown||Material recycling||426.0||406.6||402.4|
Final disposal of industrial waste generated at construction sites of Asahi Kasei Homes
AAC trimmings recycled by Asahi Kasei Construction Materials
|Lightweight artificial soil||0||0||0||0||0|
Release and transfer of PRTR-specified substances by fiscal year
|Release to air||4,720||330||520||290||250||230|
|Release to water||170||60||50||60||50||60|
|Release to soil||0||0||0||0||0||0|
|Reduction rate (%)||―||92||88||93||94||94|
VOC* air emissions
|Reduction rate (%)||―||87||87||89||91||90|
- *VOCVolatile organic compound. Although the term generally applies to any organic compound which is in gaseous state at the time of release, regulations for the control of their release exclude methane and some fluorocarbons which do not form oxidants.
FY2021 release and transfer of PRTR-specified substances
|Company||Sites||Substance||Release to air
||Release to water
||Release to soil
|Asahi Kasei Corp.||Others||Toluene||10||0||0||10||0|
|Nobeoka||1,1-Dichloroethylene (vinylidene chloride)||23||0||0||23||156|
|Dichloromethane (methylene chloride)||14||0||0||14||0|
|Chloroethylene (vinyl chloride)||6||0||0||6||39|
|Water-soluble copper salts (except complex salts)||0||20||0||20||0|
|Moriyama||Dichloromethane (methylene chloride)||17||0||0||17||0|
|Molybdenum and its compounds||0||14||0||14||0|
|Asahi Kasei Medical||Nobeoka||N,N-dimethylacetamide||2||8||0||10||197|
- ・Substances whose total emissions into the air, water, and soil at a given site are at least five tons/year are listed along with their emission amounts, etc.
- ・Rounded to the nearest ton.
Release of air and water pollutants by fiscal year
|Soot and dust3||Tons||110||140||90||110||140|
|Waste water effluence||Million m3||212||221||216||204||202|
Air emissions by site
|SOx||NOx||Soot and dust||SOx||NOx||Soot and dust||SOx||NOx||Soot and dust|
- 1Sulfur oxides (SOx) are formed when crude oil, fuel oil, or coal containing sulfur are used as fuel. Sulfur dioxide (SO2) is most common, but some sulfur trioxide (SO3) also forms. The term SOx is inclusive of both of these.
- 2Nitrogen oxides (NOx) are formed in nature and during combustion at thermal power plants, factory boilers, internal combustion engines, and incinerators. The term NOx is inclusive of both nitric oxide (NO) and nitrogen dioxide (NO2).
- 3Soot and dust are fine particles formed in the combustion of fuel and other materials.
- 4Chemical oxygen demand is an indicator of water pollution by organic substances. COD is expressed in terms of the amount of oxygen that can be consumed by an oxidizer to chemically oxidize the organic substances contained in the water.
Water usage and effluence
|Japan and overseas||Usage||282||307||268||255||267|
Water usage and sources by fiscal year in Japan
Water emissions in Japan by site
(Tons, except effluence: million m3)
Number of Group Employees
|Number of Group Employees||Total||Asahi Group (consolidated)
- Note:According to individuals' self-identification.
Number of Employees by Status
Persons with disabilities
|Number of employees with disabilities [Scope Note 2]||All Group companies applicable as Special Subsidiaries||579||574||609||623||639|
|Employment rate (%) [Scope Note 2]||2.24||2.23||2.31||2.38||2.35|
|Statutory employment rate (%) [Scope Note 2]||2||2.2||2.2||2.3||2.3|
|Number of new hires||New graduate total||Note 1||516||565||614||586||460|
|Proportion of mid-career recruitment* (%)||31.0||46.3||40.0||33.7||42.9|
|Number of resignations||216||232||292||283||328|
- *As of Sep. 30, 2022
Working Hours / Salary
|Total hours worked||1999||2008.1||1948.7||1973.9||1992.2|
|Overtime hours worked||283.4||292.5||247.3||260.9||286.6|
|Average paid vacation days taken||15.07||14.48||15.66||14.29||14.76|
|Average rate of paid vacation||77.8%||75.1%||82.3%||75.3%||77.6%|
|Average annual salary (¥)||Asahi Kasei Corp.||7,645,207||7,871,666||7,691,021||7,691,021||7,810,513|
|Total training hours||―||―||―||382,632||290,931|
|Average time per employee||―||―||―||21.5||22.3|
|Annual education and training costs (¥)||Note 1||82,000||129,000||116,000||42,500||80,000|
Diversity / Work-life Balance
|Number of female managers and supervisors||Note 1||534||574||622||660||701||752|
|Number of female managers||171||193||212||231||257||277|
|Total number of managers||5,783||5,786||5,767||5,780||5,760||5,778|
|Ratio of female managers (%)||3.0||3.3||3.7||4.0||4.5||4.8|
|Number of employees taking child care leave||Male||346||392||417||433||420||―|
|Number of employees using shortened working hours system for child care||Male||5||3||3||4||2||―|
|Number of employees using "Kids Support" shortened working hours system||Male||1||1||2||0||0||―|
|Number of employees taking family care leave||Male||1||4||3||6||2||―|
|Number of employees using shortened working hours system for family care||Male||0||0||3||4||2||―|
Occupational Health and Safety
|Occupational health and safety||Scope||FY2016||FY2017||FY2018||FY2019||FY2020||FY2021|
|Group lost time frequency rate (%)||Note 3||0.35||0.3||0.41||0.44||0.21||0.38|
|Group severity rate (%)||0.024||0.005||0.008||0.074||0.006||0.133|
|Number of lost-worktime injuries||Group employees||―||―||―||25||12||22|
|Of which, number of fatalities||Group employees||―||―||―||0||0||1|
|Average age||Note 4||43.6||43.8||43.8||43.8||43.7||43.7|
|Percentage finding problems during health examinations (%)||63.4||62.5||62.6||62.3||62.7||62.5|
|Smoking rate (%)||26.6||26.9||26.3||25.8||24.7||23.5|
|Number of days absent due to injury or illness (days per person; calculated based on reports of absence from work)||3.2||3.1||3.2||3.5||3.1||3.4|
|Specific health guidance rate (%)||―||5.3||25.4||34.1||35.5||―|
|Stress check rate (%)||96.6||96.9||96.2||98.0||96.3||95.7|
|Self-care education participation rate (%; implemented in 2022)||―||―||―||―||―||98.0|
|Employee satisfaction with the seminar (% who responded "very satisfied" or "satisfied" among 5 choices)||―||―||―||―||―||87.3|
|Social contribution activity expenses (¥ million)||Asahi Group (consolidated)
|Ratio of ordinary income (%)||2.46||0.61||0.6||0.62||2.62|
- 1 Asahi Kasei, Asahi Kasei Microdevices, Asahi Kasei Homes, Asahi Kasei Construction Materials, Asahi Kasei Pharma, and Asahi Kasei Medical
- 2 The rate of employment and the number of persons employed are the average figures for each fiscal year for applicable companies of the Asahi Kasei Group. Calculations are based on total employment of 26,990 persons at the 20 applicable companies as of June 1, 2020. (number of persons calculated in accordance with the Act on Employment Promotion, etc. of Persons with Disabilities)
- 3 Asahi Kasei Group companies in Japan as defined in the Asahi Kasei Group ESH & QA Regulations (a list of departments implementing Asahi Kasei's ESH & QA Program can be downloaded from the following page)
- 4 Employees of major Japanese subsidiaries in addition to companies listed in Note 1
|Number of Directors||Inside Directors||Male||Asahi Kasei Corp.||6||6||6||6||6|
|Independent Outside Directors||Male||2||2||2||2||2|
|Ratio of Female Members of the Board of Directors (%)||11.1||11.1||11.1||11.1||11.1|
- Note:The number of Board of Directors meetings and committee meetings and their attendance rates are reported on the following page.