Environmental Load of Business Activities

The depletion of energy resources, global warming, threats to biodiversity and other environmental problems are having an increasingly serious impact on the global environment. Given these situations, the SUMCO Group (Japan) identifies forms of energy such as electric power, chemical substances, waste products, and wastewater as significant environmental aspects in its production activities. And we pursue initiatives to consider the environment and reduce environmental load across all of our business activities.

Business Activities and Environmental Load in 2023 (SUMCO Group [Japan])

Business Activities and Environmental Load in 2019 (SUMCO Group [Japan])

(remark)

Underlined items are subject to third-party verification.
Figures are rounded to the nearest whole number, so the total of the breakdown and the total value shown may differ.

List of Boundaries

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Site Energy usage GHG emissions Water used/ waste-water Industrial waste generated VOC emissions PRTR emissions Atmos-pheric pollutant emissions Abbre-viation
Includes SUMCO Group companies in Japan Kyushu Factory (Nagahama, Imari) 〇 〇 〇 〇 〇 〇 〇 SUMCO
Kyushu Factory (Kubara, Imari) 〇 〇 〇 〇 〇 〇 〇
Kyushu Factory (Saga) 〇 〇 〇 〇 〇 〇 〇
Yonezawa Plant 〇 〇 〇 〇 — 〇 —
Chitose Plant 〇 〇 〇 〇 〇 〇 —
JSQ Division 〇 〇 〇 〇 — 〇 〇
SUMCO TECHXIV Corp. Nagasaki Plant 〇 〇 〇 〇 〇 〇 〇 STC
SUMCO TECHXIV Corp. Miyazaki Plant 〇 〇 〇 〇 〇 〇 〇
SUMCO Technology Corp. Noda Plant 〇 〇 〇 〇 — 〇 〇 STEC
SUMCO Group Companies Overseas SUMCO Phoenix Corporation 〇 〇 〇 〇 — — 〇 SPX
PT. SUMCO Indonesia 〇 〇 〇 〇 — — — SPTI
FORMOSA SUMCO TECHNOLOGY CORPORATION 〇 〇 〇 〇 〇 〇 〇 FST
  • *Including all Japan and overseas sites.

Environmental Load (SUMCO Group / domestic)

GHG emissions (Japan) (thousand tons-CO2 per year)

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Water consumption (Japan) (Mm3 per year)

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Environmental Load (SUMCO Group / overseas)

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GHG emissions (overseas) (thousand tons-CO2 per year)

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Water consumption (overseas) (Mm3 per year)

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  • *GHG emissions of the overseas subsidiaries are calculated using the emission coefficient of each country based on the Greenhouse Gas Protocol Initiative.

Environmental Data (SUMCO Group / domestic and overseas)

GHG Emissions Data

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(thousand tons-CO2 per year)
5 years prior (2019) 4 years prior (2020) 3 years prior (2021) 2 years prior (2022) Last year (2023)
Scope 1 (direct) 26 25 27 28 33
Scope 2 (indirect) 702 765 812 765 942
Scope 3 (other indirect) 612 694 758 882 1,133
Scope 1&2 728 790 839 793 975
Scope 1, 2&3 1,340 1,484 1,597 1,675 2,109
Greenhouse Gas Emissions Scope3 Data (SUMCO Group / domestic)

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(thousand tons-CO2 per year)
Category 2023
1 Purchased goods and services 609
2 Capital goods 319
3 Fuel- and energy-related activities (not in Scope 1 or 2) 108
4 Upstream transportation and distribution 59
5 Waste generated in operations 21
6 Business travel 4
7 Employee commuting 14
8 Upstream leased assets Not applicable
9 Downstream transportation and distribution —*1
10 Processing of sold products —*1
11 Use of sold products Not applicable
12 End-of-life treatment of sold products —*1
13 Downstream leased assets Not applicable
14 Franchises Not applicable
15 Investments Not applicable
  • *1SUMCO products are potentially intermediate products with many downstream applications. It is difficult to make an accurate and reliable calculation, and we have determined that the calculation is not appropriate in terms of reliability.

(remark)

Figures are rounded to the nearest whole number, so the total of the breakdown and the total value shown may differ.

GHG Emissions Data (by Company)

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(thousand tons-CO2 per year)
5 years prior (2019) 4 years prior (2020) 3 years prior (2021) 2 years prior (2022) Last year (2023)
SUMCO 1,014 1,132 1,228 1,316 1,691
STC 112 119 131 120 184
FST 144 165 165 167 171
SPX 58 57 60 60 52
SPTI 12 12 12 12 11
Total 1,340 1,484 1,597 1,675 2,109
  • *Greenhouse Gas Emissions Scope3 is aggregated as "SUMCO".
  • *Figures are rounded to the nearest whole number, so the total of the breakdown and the total value shown may differ.
GHG Data (Scope 1)(SUMCO Group / domestic and overseas)

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(tons)
5 years prior (2019) 4 years prior (2020) 3 years prior (2021) 2 years prior (2022) Last year (2023)
CO2 26,000 25,000 27,000 28,000 31,000
CH4 — — — — —
N2O — — — — —
HFC 0.012 0.006 0.014 0.014 1.7
PFC — — — — 0.048
SF6 — — — — 0
NF3 — — — — —
  • *Figures are rounded to the nearest whole number, so the total of the breakdown and the total value shown may differ.
Energy Consumption(SUMCO Group / domestic and overseas)

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5 years prior (2019) 4 years prior (2020) 3 years prior (2021) 2 years prior (2022) Last year (2023)
Electricity usage (GWh) 1,707 1,792 1,877 1,963 1,899
Electricity (converted to petroleum) (kL) 429,838 451,085 472,505 494,290 478,178
Fuel (converted to petroleum) (kL) 9,054 8,804 9,670 10,103 10,868
Steam (converted to petroleum) (kL) — — — — 1,561
Water Supplied(SUMCO Group / domestic and overseas)

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(Mm3 per year)
5 years prior (2019) 4 years prior (2020) 3 years prior (2021) 2 years prior (2022) Last year (2023)
Surface water (rivers, wetland, natural lakes) 13.5 14.8 15.7 17.3 17.9
Water underground (well water) 3.3 3.2 3.5 3.8 4.1
Quarry water — — — — —
Potable water 1.2 1.1 1.3 1.3 1.2
External drainage water — — — — —
Rainwater — — — — —
Seawater — — — — —
Total 18.0 19.1 20.5 22.4 23.2
Water Supplied (by Company)

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(Mm3 per year)
5 years prior (2019) 4 years prior (2020) 3 years prior (2021) 2 years prior (2022) Last year (2023)
SUMCO 9.7 10.4 11.1 12.7 13.0
STC 4.1 4.2 4.6 4.8 5.2
FST 2.5 2.8 3.0 3.0 3.2
SPX 1.3 1.3 1.4 1.5 1.4
SPTI 0.4 0.4 0.4 0.4 0.4
Total 18.0 19.1 20.5 22.4 23.2
  • *Please refer the page of "Effective Use of Water Resources" for water-stressed area.
Drainage Water(SUMCO Group / domestic and overseas)

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(Mm3 per year)
5 years prior (2019) 4 years prior (2020) 3 years prior (2021) 2 years prior (2022) Last year (2023)
Total water drained into the ocean 7.8 8.6 9.1 10.3 10.7
Total water drained to surface water sources — — — — —
Total water drained to underground sources/ well water sources — — — — —
Total water drained outside of plants 5.2 4.7 4.8 5.1 5.4
Other drainage water 3.3 3.1 3.5 3.5 3.4
Total drainage water 16.3 16.4 17.4 18.9 19.5
Drainage Water (by Company)

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(Mm3 per year)
5 years prior (2019) 4 years prior (2020) 3 years prior (2021) 2 years prior (2022) Last year (2023)
SUMCO 8.4 8.9 9.6 10.8 10.8
STC 3.8 3.7 4.0 4.2 4.5
FST 2.1 2.3 2.3 2.3 2.7
SPX 1.6 1.1 1.1 1.2 1.2
SPTI 0.4 0.4 0.4 0.4 0.3
Total 16.3 16.4 17.4 18.9 19.5
VOC emissions(SUMCO Group / domestic)

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(tons per year)
5 years prior (2019) 4 years prior (2020) 3 years prior (2021) 2 years prior (2022) Last year (2023)
VOC 8.7 8.4 11.3 10.3 5.5
  • Note;Chemical Substances have been tabulated based on the PRTR system of the Ministry of Economy, Trade and Industry since 2021.

Environmental Data

We have conducted third-party verification in accordance with ISO14064-3 for Scope 1, 2, and 3 (Categories 1, 2, and 3) to improve the reliability of the calculation results for GHG emissions of the SUMCO Group (Japan), and obtained a verification report.