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. The SUMCO Group identifies forms of energy such as electric power, chemical substances, waste products and wastewater as significant environmental aspects in its production activities and pursues initiatives to make environmental considerations and reduce the environmental load across all of its business activities.

Business Activities and Environmental Load in 2022 (SUMCO Group [Japan])

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

List of Boundaries

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Site Energy usage CO2 emissions stemming from energy usage 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 (Japan)

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

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Water consumption (Japan) (Mm3 per year)

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Environmental Load (Overseas)

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

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Water consumption (overseas) (Mm3 per year)

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  • *CO2 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)

Greenhouse Gas Emissions Data

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(thousand tons-CO2 per year)
5 years prior (2018) 4 years prior (2019) 3 years prior (2020) 2 years prior (2021) Last year (2022)
Scope 1 (direct) 25 26 25 27 28
Scope 2 (indirect) 877 702 765 812 765
Scope 3 (other indirect) 4 612 694 758 882
Scope 1&2 902 728 790 839 793
Scope 1, 2&3 906 1,340 1,484 1,597 1,675
  • *Numbers of Scope 3 (other indirect) until 2018 include category 4 (upstream transportation and distribution) only.
Greenhouse Gas Emissions Scope3 Data (Japan)

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(thousand tons-CO2 per year)
Category 2022
1 Purchased goods and services 561
2 Capital goods 123
3 Fuel- and energy-related activities (not in Scope 1 or 2) 110
4 Upstream transportation and distribution 48
5 Waste generated in operations 26
6 Business travel 1
7 Employee commuting 13
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.
Greenhouse Gas Emissions Data (by Company)

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(thousand tons-CO2 per year)
5 years prior (2018) 4 years prior (2019) 3 years prior (2020) 2 years prior (2021) Last year (2022)
SUMCO 524 1,014 1,132 1,228 1,316
STC 156 112 119 131 120
FST 152 144 165 165 167
SPX 61 58 57 60 60
SPTI 12 12 12 12 12
Total 906 1,340 1,484 1,597 1,675
  • *Greenhouse Gas Emissions Scope3 is aggregated as "SUMCO".
Breakdown of Greenhouse Gas Data (Scope 1)

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(tons)
5 years prior (2018) 4 years prior (2019) 3 years prior (2020) 2 years prior (2021) Last year (2022)
CO2 25,000 26,000 25,000 27,000 28,000
CH4 — — — — —
N2O — — — — —
HFC 0.012 0.012 0.006 0.014 0.014
PFC — — — — —
SF6 — — — — —
Other — — — — —
Energy Consumption

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5 years prior (2018) 4 years prior (2019) 3 years prior (2020) 2 years prior (2021) Last year (2022)
Electricity usage (GWh) 1,793 1,707 1,792 1,877 1,963
Electricity (converted to petroleum) (kL) 451,403 429,838 451,085 472,505 494,290
Fuel (converted to petroleum) (kL) 8,711 9,054 8,804 9,670 10,103
Water Supplied

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(Mm3 per year)
5 years prior (2018) 4 years prior (2019) 3 years prior (2020) 2 years prior (2021) Last year (2022)
Surface water (rivers, wetland, natural lakes) 13.2 13.5 14.8 15.7 17.3
Water underground (well water) 3.4 3.3 3.2 3.5 3.8
Quarry water — — — — —
Potable water 1.3 1.2 1.1 1.3 1.3
External drainage water — — — — —
Rainwater — — — — —
Seawater — — — — —
Total 17.9 18.0 19.1 20.5 22.4
Water Supplied (by Company)

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(Mm3 per year)
5 years prior (2018) 4 years prior (2019) 3 years prior (2020) 2 years prior (2021) Last year (2022)
SUMCO 9.4 9.7 10.4 11.1 12.7
STC 4.1 4.1 4.2 4.6 4.8
FST 2.6 2.5 2.8 3.0 3.0
SPX 1.4 1.3 1.3 1.4 1.5
SPTI 0.4 0.4 0.4 0.4 0.4
Total 17.9 18.0 19.1 20.5 22.4
  • *Please refer the page of "Effective Use of Water Resources" for water-stressed area.
Drainage Water

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(Mm3 per year)
5 years prior (2018) 4 years prior (2019) 3 years prior (2020) 2 years prior (2021) Last year (2022)
Total water drained into the ocean 7.7 7.8 8.6 9.1 10.3
Total water drained to surface water sources — — — — —
Total water drained to underground sources/ well water sources — — — — —
Total water drained outside of plants 5.0 5.2 4.7 4.8 5.1
Other drainage water 3.3 3.3 3.1 3.5 3.5
Total drainage water 16.0 16.3 16.4 17.4 18.9
Drainage Water (by Company)

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(Mm3 per year)
5 years prior (2018) 4 years prior (2019) 3 years prior (2020) 2 years prior (2021) Last year (2022)
SUMCO 8.3 8.4 8.9 9.6 10.8
STC 3.7 3.8 3.7 4.0 4.2
FST 2.1 2.1 2.3 2.3 2.3
SPX 1.5 1.6 1.1 1.1 1.2
SPTI 0.4 0.4 0.4 0.4 0.4
Total 16.0 16.3 16.4 17.4 18.9
VOC emissions

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(tons per year)
5 years prior (2018) 4 years prior (2019) 3 years prior (2020) 2 years prior (2021) Last year (2022)
VOC 9.3 8.7 8.4 11.3 10.3
  • Note;Chemical Substances have been tabulated based on the PRTR system of the Ministry of Economy, Trade and Industry since last year.