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ESG Performance

Key ESG Performances

S-OIL is committed to creating stakeholder value through sustainable growth, contributing to the happiness of mankind as well as the development of society and economy. To this end, we dedicate not only to promoting bold innovation in entire business areas for enhancing our quality competitiveness and brand value but also to practicing shared growth with business partners and local communities based on the management philosophy centered on co-prosperity, fulfilling our responsibility as a corporate citizen.

E-1 Response to Climate Change

Total GHG emissions can differ due to rounding of GHG emissions at each business site

GHG Emissions

(Unit : thousand tons CO2eq)

GHG Emissions : Category, 2020, 2021, 2022, 2023 Table.
Category 2020 2021 2022 2023
Scope Ⅰ 7,824 8,137 7,904 7,925
Scope Ⅱ 1,755 1,899 1,806 1,773
Total 9,579 10,036 9,710 9,698
Scope Ⅲ 34 34 33 31
  • 1) Scope Ⅲ includes only vehicles in the downstream business.
GHG Emissions by Type
GHG Emissions by Type : Category, 2020, 2021, 2022, 2023 Table.
Category 2020 2021 2022 2023
CO2 (thousand tons) 9,538 9,987 9,663 9,651
CH4 (tons) 1,652 1,664 1,617 1,573
N2O (tons) 22 47 44 44
GHG Emissions by Type

(Unit : thousand ton CO2eq, thousand tons CO2eq/KRW billion)

GHG Emissions by Type : Category, 2020, 2021, 2022, 2023 Table.
Category 2020 2021 2022 2023
CO2 9,538 9,987 9,663 9,651
CH4 34 35 34 33
N2O 7 14 13 14
Total 9,579 10,036 9,710 9,698
Intensity1) 0.57 0.37 0.23 0.27
  • It is CO2 converted volume considering the Global Warming Potential (GWP) presented by IPCC Guideline in 2006. (GWP : CO2=1, CH4=21, N2O=310)
  • 1) Intensity is calculated on the basis of sales amount.

E-2 Operational Efficiency Improvement

Energy Consumption

(Unit : TJ)

Energy Consumption : Category, 2020, 2021, 2022, 2023 Table.
Category 2020 2021 2022 2023
Scope Ⅰ 88,708 88,011 86,437 86,616
Scope Ⅱ 37,080 42,021 39,681 38,451
Total 125,788 130,032 126,118 125,067
Scope Ⅲ 454 484 476 442
Detailed Energy Consumption

(Unit : TJ, TJ/KRW in billion)

Detailed Energy Consumption : Category, 2020, 2021, 2022, 2023 Table.
Category 2020 2021 2022 2023
Fossil fuels 88,708 88,011 86,437 86,616
Electricity 35,469 38,995 37,162 36,737
Steam / heating / cooling and other energy 1,611 3,026 2,518 1,715
Total renewable energy 0.108 0.108 0.108 0.108
Energy Intensity1) 7.47 4.73 2.97 3.50
  • 1) Intensity is calculated on the basis of sales amount.
Energy Cost

(Unit : KRW in million)

Energy Cost : Category, 2020, 2021, 2022, 2023 Table.
Category 2020 2021 2022 2023
Energy cost 1,170,767 1,548,909 1,709,809 1,859,448
Sales of Energy

(Unit : TJ)

Sales of Energy : Category, 2020, 2021, 2022, 2023 Table.
Category 2020 2021 2022 2023
Steam 2,980 2,733 2,838 2,417
EII Improvement

(Unit : %)

EII Improvement : Category, 2020, 2021, 2022, 2023 Table.
Category 2020 2021 2022 2023
EII improvement 2.22 0.49 0.39 0.68

E-3 Environmental Emissions Management

Environmental Performance

(Unit : KRW in million)

Environmental Performance : Category, 2020, 2021, 2022, 2023 Table.
Category 2020 2021 2022 2023
Environmental investments 20,122 18,949 33,336 70,195
Environmental operating costs 221,171 227,441 251,957 297,030
Environmental benefits 66,637 147,965 175,497 106,116
Environmental Investments

(Unit : KRW in million)

Environmental Investments : Category, 2020, 2021, 2022, 2023 Table.
Category 2020 2021 2022 2023
Air quality, malodor, HAPs 12,665 13,419 22,814 34,893
Water quality, marine 1,106 1,761 1,530 9,966
Energy saving 288 1,545 4,586 22,679
Soil, hazardous chemicals, waste, etc 6,063 2,224 4,406 2,657
Major investments made in 2023
Air quality, malodor, HAPs
Installation of new TMS in accordance with the total emissions trading regulation, total flare stack flow rate meter, and total calorific value meter, and facility improvements to reduce air pollutants, etc.
Water quality, marine
Wastewater treatment facility improvements to treat high concentrations of effluent, installation of additional oil detectors, etc.
Energy saving
Installation of additional energy saving equipment, facility improvements to increase thermal efficiency, etc.
Others
Installation of additional hazardous chemical leak detectors, soil pollution prevention facility improvement, implementation of integrated environmental permit follow-up system, noise/vibration improvement, etc.
Air Pollutant Emissions Concentration at Onsan Refinery
Air Pollutant Emissions Concentration at Onsan Refinery : Category, 2020, 2021, 2022, 2023 Table.
Category 2020 2021 2022 2023
SOx Concentration(ppm) 2.0 0.7 0.3 1.1
Legal standards(ppm) 120 120 120 94
NOx Concentration(ppm) 45.0 43.0 37.3 35.9
Legal standards(ppm) 130 130 130 80
Dust Concentration(mg/S㎥) 0.0 1.4 1.9 1.0
Legal standards(mg/S㎥) 15 15 15 15
  • From 2023, the legal standard is to apply the average of the permitted emission stnadards for heaters and boilers under the Integrated Environmental Permit
  • Arithmetic average of emission concentrations of the most predominantly utilized heater and boiler among our facilities (TMS and self-measurement)'
Air Pollutant Emissions Volume at Onsan Refinery

(Unit : tons)

Air Pollutant Emissions Volume at Onsan Refinery : Category, 2020, 2021, 2022, 2023 Table.
Category 2020 2021 2022 2023
Total 6,183 6,245 5,345 4,440
SOx 352 405 425 424
NOx 5,814 5,824 4,908 4,005
Dust 17 16 12 11
  • Based on the finalized permit under the Total Air Pollution Load Management System
HAPs Leak Rate at Onsan Refinery

(Unit : %)

HAPs Leak Rate at Onsan Refinery : Category, 2020, 2021, 2022, 2023 Table.
Category 2020 2021 2022 2023
HAPs leak rate 0.04 0.04 0.05 0.03
Water Pollutant Emissions Concentration at Onsan Refinery
Water Pollutant Emissions Concentration at Onsan Refinery : Category, Legal standards, 2020, 2021, 2022, 2023 Table.
Category Legal standards 2020 2021 2022 2023
BOD1) 10 ppm 2.7 3.1 3.1 3.1
COD2), 3) COD 40 ppm 8.7 8.7 7.5 -
TOC 25 ppm - - - 4.6
SS2) 10 ppm 1.7 1.8 2.1 2.3
  • 1) Self-measurement result
  • 2) Simple average of emissions concentration from outlets where TMS is installed
  • 3) Starting in 2023, chemical oxygen demand measured as TOC instead of COD
Water Consumption, Recycling, & Wastewater Volume at Onsan Refinery

(Unit : thousand tons)

Water Consumption, Recycling, & Wastewater Volume at Onsan Refinery : Category, 2020, 2021, 2022, 2023 Table.
Category 2020 2021 2022 2023
Water consumed Municipal water supplies 28,661 31,364 31,767 32,802
Fresh surface water 0 0 0 0
Fresh ground water 0 0 0 0
External steam intake 498 467 346 135
Condensate recovery 12,324 12,667 11,983 12,871
Total 41,483 44,498 44,096 45,808
Water recycled SWS1) treated water 2,554 2,749 2,354 2,373
Backwash water recovery 1,038 1,281 1,276 1,318
Condensate recovery 12,324 12,667 11,983 12,871
Total 15,916 16,697 15,613 16,562
Recycling rate 38.4% 37.5% 35.4% 36.2%
Wastewater discharged 12,518 12,684 12,636 12,998
  • 1) Sour Water Stripper
  • The area where the company operates the Refinery is not classified as a Water-stressed Area by the World Resource Institute (WRI).
General Waste Recycling & Disposal at Onsan Refinery

(Unit : tons)

General Waste Recycling & Disposal at Onsan Refinery : Category, 2020, 2021, 2022, 2023 Table.
Category 2020 2021 2022 2023
Generated 27,971 30,959 30,159 34,069
Recycled / reused 24,129 28,355 25,394 29,482
Disposed Landfilled 2,863 1,839 2,943 2,863
Incinerated (heat recovery) 0 0 0 0
Incinerated 979 765 1,822 1,724
Others 0 0 0 0
Total 3,842 2,604 4,765 4,587
Designated Waste Recycling & Disposal at Onsan Refinery

(Unit : tons)

Designated Waste Recycling & Disposal at Onsan Refinery : Category, 2020, 2021, 2022, 2023 Table.
Category 2020 2021 2022 2023
Generated 10,769 13,617 19,593 21,903
Recycled / reused 9,112 11,783 15,884 20,097
Disposed Landfilled 3 64 2 13
Incinerated (heat recovery) 0 0 0 0
Incinerated 1,654 1,771 3,088 1,793
Others 0 0 619 0
Total 1,657 1,835 3,709 1,806
Emissions of Hazardous Chemical Substances

(Unit : tons)

Emissions of Hazardous Chemical Substances : Category, 2019, 2020, 2021, 2022 Table.
Category 2019 2020 2021 2022
S-OIL 89 87 83 -
Average of domestic competitors 192 253 175 -

Data for 2022 is not announced by the Ministry of Environment

Oil Spill

(Unit : cases)

Oil Spill : Category, 2020, 2021, 2022, 2023 Table.
Category 2020 2021 2022 2023
No. of oil spill accidents (leakage to the outside of factory) 0 11) 0 0
  • 1) In 2021, an oil spill was found in underground pipeline. But S-OIL completed a prevention work and an improvement of facilities for preventing a recurrence.
Violation of Environmental Laws

(Unit : cases, KRW in million)

VViolation of Environmental Laws : Category, 2020, 2021, 2022, 2023 Table.
Category 2020 2021 2022 2023
Fine/penalty or over (Over $10,000) No. of violations 0 0 0 0
Amount 0 0 0 0
Green Purchasing

(Unit : cases, KRW in million)

Green Purchasing : Category, 2020, 2021, 2022, 2023 Table.
Category 2020 2021 2022 2023
No. of products 252 103 101 144
Amount of purchasing 14,413 18,956 33,348 70,214
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