Environment

Greenhouse gas (GHG) emissions

GHG emissions (Scope 1, 2, and 3)*1（48 companies in the Cosmo Energy Group）*2

  Unit FY2013 FY2021 FY2022 FY2023 FY2024 FY2025 Third Party Verified
Scope 1 emissions CO2 emissions*2 1,000 tCO2e － 7,660 7,277 6,872 6,147 6,722 ✓
GHG emissions excluding CO2*3 1,000 tCO2e － 23 22 26 23 26 ✓
（Breakdown） CH4 1,000 tCO2e － 4 5 5 4 5 ✓
N2O 1,000 tCO2e － 19 18 21 19 22 ✓
Total 1,000 tCO2e 7,764 7,684 7,299 6,899 6,170 6,749 ✓
Scope 2 emissions*4 Purchased electricity 1,000 tCO2e － 173 192 169 189 194  
Purchased steam 1,000 tCO2e － 62 52 57 66 65  
Total 1,000 tCO2e 320 235 244 226 256 258 ✓
Scope 1&2 emissions total 1,000 tCO2e 8,064 7,918 7,545 7,125 6,426 7,007 ✓
Scope 3 emissions Unit FY2013 FY2021 FY2022 FY2023 FY2024 FY2025 Third Party Verified
category 1　Purchased goods and services 1,000 tCO2e － － 10,306 13,534 13,258 13,228 ✓
category 2　Capital goods 1,000 tCO2e － － 268 224 185 251 ✓
category 3　Fuel- and energy-related activities 1,000 tCO2e － － 476 623 588 987 ✓
category 4　Upstream transportation and distribution*2 1,000 tCO2e － － 297 322 321 328 ✓
category 5　Waste generated in operations 1,000 tCO2e － － 25 39 44 46 ✓
category 6　Business travel 1,000 tCO2e － － 1 1 1 1 ✓
category 7　Employee commuting 1,000 tCO2e － － 3 5 5 5 ✓
category 8　Upstream leased assets*5 1,000 tCO2e              
category 9　Downstream transportation and distribution 1,000 tCO2e － － 86 75 142 270 ✓
category 10　Processing of sold products*5 1,000 tCO2e              
category 11　Use of sold products 1,000 tCO2e － 54,859 57,979 56,655 55,542 55,512 ✓
category 12　End-of-life treatment of sold products 1,000 tCO2e － － 3,803 4,349 4,176 4,402 ✓
category 13　Downstream leased assets 1,000 tCO2e － － 12 11 12 12 ✓
category 14　Franchises*5 1,000 tCO2e              
category 15　Investments 1,000 tCO2e － － － 1,199 783 378 ✓
Total 81,970 － 73,257 77,034 75,054 75,420 ✓

*1.  The following databases were used to calculate GHG emissions by scope

  • Calculating and Reporting Greenhouse Gas Emissions (Ministry of the Environment)
  • LCI Database IDEA version 3.5.1 (IDEA Lab, Research Institute of Science for Safety and Sustainability, National Institute of Advanced Industrial Science and Technology)
  • Emissions Intensity Database for Calculating an Organization's Greenhouse Gas Emissions Throughout its Supply Chain ver3.6 (Ministry of the Environment)

*2.  Scope of data coverage: Cosmo Energy Holdings and its 47 consolidated companies（including Cosmo Oil, Cosmo Oil Marketing, Cosmo Energy Exploration & Production, Maruzen Petrochemical, as well as subsidiaries）.
We have reviewed the eligible facilities and calculated the amounts retroactively for fiscal years 2021, 2022, 2023and 2024.

*3.  Reported values according to the Act on Promotion of Global Warming Countermeasures, Aggregate values for CH4 and N2O (HFCs, PFCs, etc. are excluded due to small amounts)

*4.  Calculated value of market-base

*5. ー：Categories 8, 10, and 14 have been excluded because they are not applicable or no applicable items were identified.

Scope 1&2 emissions intensity

  Unit FY2021 FY2022 FY2023 FY2024 FY2025 Third Party Verified
GHG emissions per unit of consolidated net sales tCO2e/million yen 3.24 2.70 2.61 2.29 2.62  
Consolidated net sales 1 million yen 2,440,452 2,791,872 2,729,570 2,799,947 2,677,582  
GHG emissions per unit of energy consumption tCO2e/1,000kL-crude oil 2.47 2.42 2.47 2.40 2.44  
Energy consumption（Crude oil equivalent） 1,000kL-cude oil 3,212 3,117 2,885 2,679 2,871 ✓
refineries GHG emission intensity kgCO2e/1,000kL 24 23 24 23 23 ✓
GHG emissions 1,000 tCO2e 4,138 4,153 3,780 3,809 3,958 ✓

Scope 3 (Category 11_Use of sold products) CO2 emissions intensity

  Unit FY2021 FY2022 FY2023 FY2024 FY2025 Third Party Verified
CO2 emissions from the use of sold products per unit of consolidated net sales tCO2e/million yen 22.48 20.77 20.76 19.84 20.73  
CO2 emissions from the use of sold products 1,000tCO2e 54,859 57,979 56,655 55,542 55,512 ✓

CO2 Contribution to reduction

  Unit FY2021 FY2022 FY2023 FY2024 FY2025 Third Party Verified
CO2 Reduction Contribution from the Sale of Renewable Energy*6 1,000 tCO2e 269 244 276 249 407  
CO2 Reduction Contribution from the Sale of Biofuels*7 1,000 tCO2e 165 193 207 219 231  
Total   434 437 483 469 637  

*6. Calculating the CO2 reduction contribution based on actual renewable energy sales volume

*7. Calculating the CO2 reduction contribution based on actual sales volumes of Bio-ETBE-blended gasoline and SAF

Energy consumption

Energy usage

  Unit FY2021 FY2022 FY2023 FY2024 FY2025 Third Party Verified
Petroleum refining business TJ 73,544 71,652 66,218 61,618 68,796  
Petrochemical business TJ 44,380 43,485 39,985 36,175 36,387  
Others (oil E&P/sales/office) TJ 6,569 5,682 5,634 6,035 6,090  
Group total（Heat quantity equivalent） TJ 124,493 120,819 111,837 103,828 111,273 ✓

Energy usage in manufacturing operations, and energy consumption intensity

  Unit FY2021 FY2022 FY2023 FY2024 FY2025 Third Party Verified
Petroleum refining business (including storage and research centers) Fuel 1,000 kL crude oil 1,791 1,720 1,626 1,641 1,835  
Electricity 1,000 kWh 313,962 413,203 299,224 357,840 321,767  
Steam GJ 524,564 523,494 556,963 615,972 613,578  
Petrochemical business (including research centers) Fuel 1,000 kL crude oil 1,113 1,060 1,009 908 911  
Electricity 1,000 kWh 58,006 72,584 63,923 50,957 63,117   
Steam GJ 350,307 362,611 332,590 572,456 540,704  
Sales Electricity 1,000 kWh 42,084 41,657 40,066 38,921 36,281  
Office and Other Electricity 1,000 kWh 2,134 4,895 5,524 5,234 5,429  
Total purchased electricity amount Electricity 1,000 kWh 416,186 532,339 408,737 452,952 426,595   
Renewable energy portion 1,000 kWh 7,570 38,968 38,632 40,291 40,402  
Energy consumption intensity (petroleum refining)*8 L/kL 9.21 9.17 9.03 9.10 9.13 ✓
Energy consumption (petroleum refining) 1,000 kL crude oil 1,616 1,621 1,451 1,480 1,542 ✓

*8. Energy consumption intensity = Energy consumption (crude oil equivalent) / Crude oil equivalent processing amount

Energy consumption intensity in transport operations (petroleum business)

  Unit FY2021 FY2022 FY2023 FY2024 FY2025 Third Party Verified
Coastal tankers*9, 10 L / thousand t-km 12 11.94 13.64 13.96 14.12 ✓
Tank trucks*10 L / thousand t-km 35.38 35.62 36.44 35.82 35.53 ✓

*9. Review of the coverage of coastal tankers and retroactively counted for FY2024.

*10. Energy consumption intensity = Energy consumption (crude oil equivalent) / Transport t-km

Office energy consumption*11

  Unit FY2021 FY2022 FY2023 FY2024 FY2025 Third Party Verified
Cosmo Energy Holdings and 3 core operating companies*12 1,000 kWh 920 959 822 825 719  
Group companies 1,000 kWh 1,214 3,936 4,702 4,409 4,711  
Cosmo Energy Group total 1,000 kWh 2,134 4,895 5,524 5,234 5,429  

*11. Cosmo Energy Group companies: 48 companies in total.

*12. 3 core operating companies: Cosmo Oil, Cosmo Oil Marketing, and Cosmo Energy Exploration & Production

Environmentally hazardous substances

Air pollutant emissions

  Unit FY2021 FY2022 FY2023 FY2024 FY2025 Third Party Verified
Petroleum refining Sulfur oxides (SOx) t 3,583 3,196 3,165 3,491 3,512 ✓
Nitrogen oxides (NOx) t 2,520 2,300 2,336 2,131 2,333 ✓
Petrochemicals Sulfur oxides (SOx) t 604 597 582 558 322 ✓
Nitrogen oxides (NOx) t 889 774 790 737 822 ✓
Volatile organic compound (VOC) emissions t 2,620 2,625 2,604 2,599 2,595  

Air pollution emission intensity (refineries)

  Unit FY2021 FY2022 FY2023 FY2024 FY2025 Third Party Verified
SOx emissions intensity*13 g/kL 20.2 17.9 19.5 21.4 20.6 ✓
Annual sulfur oxide (SOx) emissions t 3,537 3,161 3,127 3,479 3,480 ✓
NOx emissions intensity*13 g/kL 13.8 12.6 14.0 12.9 13.3 ✓
Annual sulfur oxide (NOx) emissions t 2,416 2,223 2,244 2,099 2,254 ✓

*13. Emission intensity= Annual emissions / Crude oil equivalent processing amount

Chemical substances released and transferred (PRTR designated substances)

  Unit FY2021 FY2022 FY2023 FY2024 FY2025 Third Party Verified
Petroleum refining Atmospheric emissions t 120 123 132 140 121  
Wastewater discharge t 4 3 2 7 14  
Soil contaminants t 0 0 0 0 0  
Total emissions released t 123 126 134 147 135 ✓
Total emissions transferred t 682 438 535 262 696 ✓
Total t 806 565 669 409 831  
Petrochemicals Atmospheric emissions t 274 253 302 387 319  
Wastewater discharge t 4 1 1 2 2  
Soil contaminants t 0 0 0 0 0  
Total emissions released t 278 255 303 389 320 ✓
Total emissions transferred t 18 19 36 38 36 ✓
Total t 296 274 339 426 356  

Number of environmental accidents*14

  FY2021 FY2022 FY2023 FY2024 FY2025 Third Party Verified
Number of oil spills 0件 0件 0件 0件 0件  
Environmental law violations, fines, and penalties なし なし なし なし なし  

*14. In FY2025, no complaints were received through the formal environmental complaint handling channel (and no response measures were taken).

Water resource use and discharge

Water intake, discharge and usage

  Unit FY2021 FY2022 FY2023 FY2024 FY2025 Third Party Verified
Petroleum refining Industrial water 1,000 t 41,186 41,243 41,033 40,027 42,045 ✓
Seawater 1,000 t 413,496 409,504 398,892 386,067 422,620 ✓
Groundwater 1,000 t 384 284 235 391 422 ✓
Municipal water 1,000 t 199 165 179 230 228 ✓
Total intake 1,000 t 455,265 451,196 440,339 426,715 465,316 ✓
Total discharge*15合計 1,000 t 450,372 445,532 435,144 420,909 458,886 ✓
Total usage 1,000 t 4,893 5,664 5,194 5,807 6,430  
Petrochemicals Industrial water 1,000 t 21,679 19,856 19,214 18,157 17,694 ✓
Seawater 1,000 t 101,998 88,791 94,341 79,566 84,016 ✓
Groundwater 1,000 t 39 34 28 34 46 ✓
Municipal water 1,000 t 17 20 18 18 19 ✓
Total intake 1,000 t 123,733 108,702 113,601 97,776 101,775 ✓
Total discharge*15 1,000 t 109,915 95,808 101,229 86,153 90,863 ✓
Total usage 1,000 t 13,818 12,893 12,372 11,623 10,912  
Cosmo Energy Group
Total		 Industrial water 1,000 t 63,217 61,434 60,482 58,449 59,921 ✓
Seawater 1,000 t 515,493 498,295 493,233 468,124 509,627 ✓
Groundwater 1,000 t 452 477 358 435 481 ✓
Municipal water 1,000 t 240 241 247 324 314 ✓
Total intake 1,000 t 579,403 560,447 554,320 527,332 570,343 ✓
Total discharge*15 1,000 t 560,560 541,691 536,603 508,749 551,377 ✓
Total usage 1,000 t 18,843 18,755 17,717 18,583 18,966  

*15. All wastewater is treated and goes to the sea

Wastewater treatment

  Unit FY2021 FY2022 FY2023 FY2024 FY2025 Third Party Verified
Wastewater treatment Petroleum refining 1,000 t 13,176 12,722 12,897 11,873 12,289  
Petrochemicals 1,000 t 5,664 4,968 4,649 4,529 4,678  
Other（product storage,research centers) 1,000 t 325 346 230 1,631 1,585  
Total 1,000 t 19,165 18,037 17,777 18,033 18,552  

Water pollution loads

  Unit FY2021 FY2022 FY2023 FY2024 FY2025 Third Party Verified
Petroleum refining COD loads t 104.5 89.6 90.8 90.7 97.1 ✓
Nitrogen loads t 63.7 44.6 47.5 47.4 53.4 ✓
Phosphorus loads t 1.2 0.9 0.9 0.9 1.0 ✓
Petrochemicals COD loads t 80.3 61.5 63.0 55.8 35.5 ✓
Nitrogen loads t 35.7 36.3 30.0 29.2 27.4 ✓
Phosphorus loads t 1.8 1.4 1.5 1.4 1.2 ✓

Water pollution load intensity (refinery)

  Unit FY2021 FY2022 FY2023 FY2024 FY2025 Third Party Verified
COD load intensity*16 g/kL 0.59 0.51 0.56 0.56 0.57 ✓
COD Annual load t 104.3 89.5 90.8 90.6 96.1 ✓

*16. Load intensity= Annual load / Crude oil equivalent processing amount

Resource recycling (waste)

Raw material input

  Unit FY2021 FY2022 FY2023 FY2024 FY2025 Third Party Verified
Petroleum: Crude oil processing 1,000 kL 20,098 20,596 18,568 18,632 19,221  
Petrochemicals: Total material input 1,000 kL 4,357 4,040 3,617 3,235 3,214  

Waste generation and recycling rate

  Unit FY2021 FY2022 FY2023 FY2024 FY2025 Third Party Verified
Petroleum refining Industrial Waste generated t 65,853 59,068 78,067 72,394 62,044 ✓
Waste recycled t 24,367 17,837 28,738 23,984 24,135 ✓
Final disposal amount t 15 10 15 79 144 ✓
Final disposal rate ％ 0.02 0.02 0.02 0.11 0.23  
Recycling rate ％ 37.00 30.2 36.8 33.1 38.9  
Petrochemicals Industrial Waste generated t 94,642 89,197 76,666 77,900 80,775 ✓
Waste recycled t 25,297 15,264 9,164 12,041 8,985 ✓
Final disposal amount t 274 183 226 292 127 ✓
Final disposal rate ％ 0.29 0.21 0.30 0.37 0.16  
Recycling rate ％ 26.73 17.1 12.0 15.5 11.1  
Cosmo Energy Group 
Total		 Industrial Waste generated t 161,780 149,580 155,301 159,599 145,377 ✓
Waste recycled t 50,790 34,259 41,816 45,221 35,646    ✓
Final disposal amount t 297 199 309 475 283  ✓
Final disposal rate ％ 0.18% 0.13 0.20 0.30 0.19  
Recycling rate ％ 31.4% 22.9 26.9 28.3 24.5  

Industrial waste from plastic product use

Industrial waste from plastic product use Unit FY2021 FY2022 FY2023 FY2024 FY2025 Third Party Verified
Waste (Cosmo Oil) t 362 258 444 408 383  
Waste (Maruzen Petrochemical)*1 t 318 223 150 188 170  

*1.Review the method for calculating the volume of emissions. Retroactively calculate figures for fiscal years 2023 and 2024.