Sustainability Report 2024

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Sustainability Report 2024

Environment

Numbers in table may not sum due to rounding or numbers after decimal point.

Climate Change <Target Management>

Climate Change <Target Management>

Boundary

Item

FY2022

FY2023

FY2024

Unit

Equity share1

Direct GHG emissions (Scope 1)2, 3, 4

6,839

6,864

6,833

thousand tons-CO2e

Indirect GHG emissions (Scope 2)2, 3, 4, 8

69

56

45

Net carbon intensity5

28

28

28

kg-CO2e/boe

Operational control6

Indirect GHG Emissions (Scope 3)3

Category 1

Purchased goods and services7

686

1,973

2,725

thousand tons-CO2e

Equity share1

Category 11

Use of sold products7

84,310

86,199

86,238

Operational control6

Methane emissions intensity

0.05

0.05

0.05

%

1

The total amount of emissions corresponds to the net economic share of each production project

2

Of the equity share emissions in FY2024, we have obtained third-party assurance for Scope 1 emissions (4,544 thousand tons) and Scope 2 emissions (36 thousand tons) from the production projects where we take the operator role as of December 31, 2024, and from our head office and Technical Research Center.

3

Scope 1: Direct emissions from sources we owned or controlled
Scope 2: Indirect emissions from the consumption of electricity, steam, heat, and cooling we purchased
Scope 3: All indirect emissions that occur in our value chain

4

The emissions are calculated in accordance with local laws and regulations and rules for HSE-related data.

5

Net carbon intensity includes offset. Intensity indicates the volume of GHG emitted per unit of consolidated production of oil and natural gas (converted to calorific values) in Japan and overseas.

6

HSE data is reported on an operational control basis including head office, Technical Research Center, overseas offices, and operational organizations in Japan and overseas.

7

Category 1: The volume of contractor emissions and upstream emissions from the production of purchased goods.
Category 11: The emissions are calculated by multiplying the total sales volume of crude oil, natural gas, and LPG by CO2/CH4/N2O emission factor under the assumption that all amounts of crude oil, natural gas, and LPG are combusted. The emissions are calculated from 2006 IPCC Guidelines for National Greenhouse Gas Inventories emissions factors.

8

Following a review of data collection methodologies, figures disclosed in the Sustainability Report 2023 have been revised.

Climate Change and Circular Economy

Climate Change and Circular Economy

Boundary

Item

FY2022

FY2023

FY2024

Unit

Operational
control1

Direct GHG
emissions
(Scope 1)2, 3

Emissions
source

Japan

Energy use

165

160

147

thousand
tons-CO2e

Flaring

7

4

8

Other ventings and fugitives

7

17

19

Raw-CO2 venting

91

83

64

Overseas

Energy use

3,081

3,178

3,243

Flaring

530

318

395

Other ventings and fugitives

67

139

112

Raw-CO2 venting

2,390

2,722

2,626

Gas types

Japan

CO2

263

245

219

CH4

8

19

19

N2O

0.03

0

0

Overseas

CO2

5,903

6,192

6,235

CH4

159

160

136

N2O

6

5

5

Total

 

 

6,339

6,622

6,614

Indirect GHG
emissions
(Scope 2)2, 3

Market-based

Japan

48

34

35

Overseas

1

1

1

Total

48

35

36

Location-based

Japan

36

36

32

Overseas

1

1

1

Total

37

36

33

Energy consumption4

Japan

Fuels (oil, natural gas, etc.)

3,211

3,096

2,874

TJ

Purchased electricity and heating

766

754

672

Overseas

Fuels (oil, natural gas, etc.)

60,955

61,552

62,878

Purchased electricity and heating

6

6

8

Total

64,938

65,408

66,430

Emissions to atmosphere

VOC5

Japan

358

490

413

tons

Overseas

3,939

2,161

2,610

Total

4,297

2,651

3,023

NOx

Japan

120

187

133

Overseas

3,867

3,269

3,247

Total

3,987

3,456

3,380

SOx

Japan

5

4

4

Overseas

1,003

89

649

Total

1,008

94

653

Freshwater consumption

Japan

Tap water

145,445

144,619

119,919

m3

Water for industrial use

123,310

123,415

123,431

Groundwater and surface water

787,798

806,317

772,324

Total

1,056,553

1,074,351

1,015,674

Overseas

Tap water

528,329

551,260

573,975

Water for industrial use

0

0

0

Groundwater and surface water

672,156

0

0

Total

1,200,485

551,260

573,975

Total

2,257,038

1,625,610

1,589,650

 

Discharge of produced water

Japan

Discharged into public water areas

100,174

98,532

88,687

m3

Injection return to groundwater

303,709

233,422

282,667

Total

403,883

331,954

371,354

Overseas

Discharged into public water areas

426,946

487,435

474,237

Injection return to groundwater

503,023

0

0

Total

929,969

487,435

474,237

Total

1,333,852

819,389

845,591

Waste6, 7

Japan8

Non-hazardous waste
(waste diverted from disposal)

Preparations for reuse

n/c

0

0

tons

Recycling

n/c

962

1,015

Others

n/c

0

328

Total

2,006

962

1,343

Non-hazardous waste
(waste directed to disposal)

Incineration (with energy recovery)

n/c

105

32

Incineration (without energy recovery)

n/c

136

85

Landfill

n/c

193

129

Others

n/c

180

0

Total

4,618

613

247

Hazardous waste
(waste diverted from disposal)

Preparations for reuse

n/c

0

0

Recycling

n/c

0

0

Others

n/c

15

769

Total

0

15

769

Hazardous waste
(waste directed to disposal)

Incineration (with energy recovery)

n/c

22

0

Incineration (without energy recovery)

n/c

95

18

Landfill

n/c

0

0

Others

n/c

782

0

Total

9,109

899

18

Total

15,734

2,490

2,376

Overseas

Non-hazardous waste
(waste diverted from disposal)

Preparations for reuse

n/c

2,850

3,167

Recycling

n/c

385

547

Others

n/c

1,639

3,994

Total

0

4,875

7,708

Non-hazardous waste
(waste directed to disposal)

Incineration (with energy recovery)

n/c

76

3

Incineration (without energy recovery)

n/c

0

0

Landfill

n/c

1,312

1,636

Others

n/c

0

0

Total

29,326

1,389

1,639

Hazardous waste
(waste diverted from disposal)

Preparations for reuse

n/c

0

1

Recycling

n/c

47

91

Others

n/c

0

200

Total

0

47

292

Hazardous waste
(waste directed to disposal)

Incineration (with energy recovery)

n/c

605

23

Incineration (without energy recovery)

n/c

0

0

Landfill

n/c

86

76

Others

n/c

0

0

Total

0

691

99

Total

29,326

7,001

9,738

Total

45,059

9,491

12,115

Waste
(drilling-related work)7, 9

Japan8

Waste diverted from disposal

n/c

10,920

14,523

tons

Waste directed to disposal

n/c

16,121

487

Cuttings

n/c

 

8,089(0)

Total

n/c

27,041

23,099

Overseas

Waste diverted from disposal

n/c

2,400

2,778

Waste directed to disposal

n/c

1,981

722

Cuttings

n/c

 

2,076(0)

Total

n/c

4,382

5,575

Total

n/c

31,422

28,675

Oil spills

Number of spills

0

0

0

cases

Quantity of spills

0

0

0

bbl

*

Items for which data is not collected are marked with n/c (not collected).

1

HSE data is reported on an operational control basis including head office, Technical Research Center, overseas offices, and operational organizations in Japan and overseas.

2

Scope 1: Direct emissions from sources we owned or controlled. Categories 4 and 9 are being included in Scope 1 from 2021.
Scope 2: Indirect emissions from the consumption of electricity, steam, heat, and cooling we purchased
Scope 3: All indirect emissions that occur in our value chain

3

The emissions are calculated in accordance with local laws and regulations and rules for HSE-related data.

4

The data is calculated in accordance with local laws and regulations (including the Act on Rationalization of Energy Use and Shift to Non-fossil Energy in Japan).

5

Japan: VOC emissions are calculated using the PRTR Release and Transfer Calculation Manual for Oil Refineries and Oil Storage Depots, etc. published by the Petroleum Association of Japan.
Overseas: The emissions are calculated in accordance with local laws and regulations.

6

For waste amount reporting from FY2023 onward, the aggregation classification has been changed to comply with GRI 306 reporting standards.

7

The definition of hazardous waste is in accordance with local laws and regulations. Within Japan, “specially controlled industrial waste” as stipulated in the Act on Waste Management and Public Cleaning is set as “hazardous waste,” and other waste (including “industrial waste” and “municipal waste”) is set as “non-hazardous waste.”

8

Among general waste, all waste is counted as landfill since the amount of waste classified as non-flammable is not known by treatment category.

9

From FY2023 onward, the amount of waste generated from drilling-related work such as cuttings has been counted individually. From FY2024 onward, the waste from drilling-related work is categorized and counted separately as cuttings and non-cuttings. The figures in parentheses indicate the amount of cuttings that were landfilled.

Renewable Energy

Renewable Energy

Boundary

Item

FY2022

FY2023

FY2024

Unit

Consolidated

Electricity generated by using renewable energy

Geothermal

425,372

668,425

661,957

MWh

Wind

313,240

836,832

1,260,009

Solar

5,647

37,318

160,734

Total

744,259

1,542,575

2,082,700

Total investment in renewable energy

79,836

77,435

5,707

million yen

Environmental Conservation-related CAPEX and OPEX

Environmental Conservation-related CAPEX and OPEX

Boundary

Item

FY2022

FY2023

FY2024

Unit

CAPEX

OPEX

CAPEX

OPEX

CAPEX

OPEX

Opera­tional
control1

Global warming prevention (including energy saving)

45,150

273,680

412,680

832,122

547,249

758,108

thousand yen

Prevention of air pollution

148,067

8,275

48,755

7,841

72,017

8,403

Conservation of soil and groundwater environment

216,800

0

38,830

0

182,295

0

Conservation of water quality

0

228,181

0

316,673

0

1,312,939

Treatment and disposal of waste

471,389

701,701

22,849

591,494

131,664

748,499

Project management

303,763

308,881

345,690

220,885

102,833

310,604

Monitoring of environmental impacts/
conservation of soil and groundwater environment (onshore)

40,625

63,152

179

6,860

37,725

27,714

Monitoring of environmental impacts/
conservation of water quality (onshore)

Monitoring of environmental impacts/
conservation of water quality (offshore)

2,590

12,114

2,485

72,293

2,963

93,728

Monitoring of environmental impacts/
project management (offshore)

Monitoring of environmental impacts/
biodiversity conservation

21,181

207,348

22,344

287,526

25,014

297,805

Total

1,249,565

1,803,332

893,812

2,335,693

1,101,760

3,557,802

Grand total

3,052,897

3,229,505

4,659,562

1

HSE data is reported on an operational control basis including head office, Technical Research Center, overseas offices, and operational organizations in Japan and overseas.

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