Reduction of Waste
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Amount of Disposal and Rate of Recycle (SUMCO Group [Japan])
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In Japan, the SUMCO Group is working to reduce the amount of waste generated as part of environmental conservation efforts. With regard to waste, the SUMCO Group is focusing on conversion into valuable resources and recycling with an emphasis on the circular economy. In particular, we are promoting the conversion into valuable resources of waste oil, which has a large volume of emissions among waste products.
- In 2024, influence of acquisition of polycrystalline silicon business was seen, but we will continue to strive to reduce waste products.
Waste Reduction through the Adoption of Reusable Containers
We are replacing the containers used to ship 300-mm diameter silicon wafers with reusable alternatives as one of the initiatives to reduce post-shipment waste. The percentage of reusable containers used for shipment in 2025 was 84.7%, an increase from 2024.
Before introducing reusable containers, we conduct tests to ensure that the quality of the products is not affected.
Efforts to promote Resource Circulation of Plastic
In promoting waste reduction and recycling, SUMCO Group (Japan) established recycling goal for industrial waste of products using plastic, and is working to achieve it.
Recycling rate of industrial waste for products using plastic
| Target: | 2025 | 86% | |
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| Actual: | 2025 | 91% | (Generated amount 982 t) |
| 2024 | 84% | (Generated amount 877 t) | |
| 2023 | 89% | (Generated amount 927 t) | |
| 2022 | 79% | (Generated amount 742 t) |