Environmental Data(CO2 emissions,PRTR,VOC,SOx,NOx)
We have set "Conserving resources and energy, and promoting the introduction of renewable energy" as a materiality action plan. The plan includes a KPI of achieving a 50％ reduction in CO2 emissions by fiscal 2030 compared to fiscal 2013, and we are proactively working towards this.
Concrete measures undertaken by Maxell Group as part of plant electricity-saving measures include visualizing electricity consumption patterns to reduce wasteful electricity usage,improving operational efficiency through demand management at facilities, updating air conditioning systems, switching to LED lighting, and planting of green walls. In fiscal 2022, the Kobuchizawa Works, Kyoto Works, and Ono Works began solar power generation for in-house consumption. The Kyoto Works started generating 109 MWh from September, and the Ono Works started generating 114 MWh from January. Furthermore, in fiscal 2022, we started purchasing non-fossil certificates. These efforts allowed the Group to exceed the "Renewable energy ratio of 10％ by fiscal 2030" KPI in fiscal 2022, and we therefore set a target of "Renewable energy ratio of 15％ by fiscal 2030" as a new KPI.
Additionally, we have contracted with electricity companies we selected based not only on price but also on CO2 emission coefficient trends in order to reduce our CO2 emissions.
In fiscal 2022, domestic CO2 emissions decreased 26％ compared to the previous fiscal year, and overseas emissions decreased by 1.2％, resulting in an overall 17％ reduction for Maxell Group as a whole (a 47％ reduction from fiscal 2013). Note that the activities of Maxell Izumi, Ube Maxell Kyoto, and Maxell Kureha have been included in the calculations from fiscal 2022 onwards.
In addition to solar power generation for in-house consumption,the Ono Works is also selling electricity generated with its solar power facilities. In fiscal 2022, 1,428 MWh of electricity was generated, contributing to the prevention of global warming.
Reduction of CO2 Emissions, Including Scope 3 Emissions
Maxell Group calculates total CO2 emissions across the entire supply chain, including Scope 3 emissions. Scope 3 emissions refer to indirect emissions other than Scope 1 and Scope 2 emissions. For emissions calculations, starting from fiscal 2018, we aggregate and disclose performance data in accordance with the "Basic Guidelines on Accounting for Greenhouse Gas Emissions Throughout the Supply Chain" issued by the Ministry of the Environment and the Ministry of Economy, Trade and Industry.
In fiscal 2022, as in fiscal 2021, our Scope 3 emissions decreased,primarily owing to the downsizing of the projector business,which consumes significant amounts of electricity during use. This resulted in a decrease in the proportion of CO2 emissions associated with the use of sold products. We aim to further reduce CO2 emissions during product use by promoting energy-efficient design.
Ascertaining Transport-related Energy Intensity Per Production
Since Maxell Group offers a wide range of products, we monitor the transport-related energy intensity per production at each manufacturing base.
In fiscal 2022, the total for all manufacturing bases increased by 5.7％ compared to the previous fiscal year.
Waste Reduction and Recycling
Regarding the conservation of resources, which we have set as a materiality's action plan, in light of the recent emphasis on addressing the environmental issue of plastic waste, we plan to set KPIs for reducing plastic waste generated at our business sites. We are currently exploring chemical and material recycling, and intend to establish concrete targets for this in our next medium-term management plan.
Furthermore, at Maxell Group, we are working towards "Zero emissions"*1 by ensuring thorough waste separation, promoting the monetization of valuable waste through information sharing at each business site, and expanding and enhancing in-house intermediate processing. For example, in the lithium-ion battery manufacturing process, we separate waste such as end cuts generated in each production step and deliver these to the recycling companies to recycle copper, aluminum and rare metals such as cobalt from waste materials (43 tons in fiscal 2022). At the Ono Works, we also recycle silver oxide (2.6 tons in fiscal 2022). The amount of valuable waste generated domestically in fiscal 2022 was down 9％ compared to the previous fiscal year. As a result of our intensified recycling efforts, domestic manufacturing bases achieved zero emissions for the 22nd consecutive year.
*1 Criteria for zero emissions (criteria for each business site): Final waste disposal volume less than 5 tons/year and final disposal ratio less than 1％/year
Water Consumption Reduction Initiatives
Maxell Group strives to reduce water consumption in manufacturing processes and conserve water resources through reutilization and other practices. For instance, at the Kyoto Works, a system to recover and reuse 100％ of drain water was introduced in fiscal 2019 in response to increased steam usage due to the increased production of lithium-ion battery electrodes. This resulted in a saving of 40 km3 of water annually. In Maxell Group's domestic business sites, there was a 17％ reduction in water usage compared to the previous fiscal year, and at overseas Group's business sites where water risk*2 is particularly high, there was a 5％ reduction compared to the previous fiscal year. Overall, Maxell Group achieved a 15％ reduction in water usage compared to the previous fiscal year.
*2 Water Risk Atlas (Aqueduct) by World Resources Institute (WRI)
Management of chemical substances generated during production
At Maxell Group, we measure and control the amount of chemical substances handled, emitted, and transferred in the manufacturing process and strive to reduce them.