PTTEP Project Details and Financial Performance

VALUE CHAIN OVERVIEW Thailand Energy Market Natural Gas Supply Natural Gas Consumption FY 2021 FY 2022 2M 2023 Domestic MMSCFD Myanmar LNG 4,362 Domestic Myanmar LNG 4,274 Domestic Myanmar LNG 4,726 0 1,000 2,000 3,000 4,000 5,000 FY 2021 FY 2022 2M 2023 MMSCFD Electricity Industry GSP NGV 3,846 Electricity Industry GSP NGV 4,143 Electricity Industry GSP NGV 4,395 0 1,000 2,000 3,000 4,000 5,000 2M 2023 Thailand's Oil and Gas Demand 2M 2023 Thailand Petroleum Production % by Petroleum Type and Area Crude Oil & Condensate ~1.2 m BOE/D Domestic 12% Imports 88% ~ Natural Gas 0.8 m BOE/D Domestic Imports 39% 61% Source: Energy Policy and Planning Office (EPPO) and Department of Mineral Fuels (DMF) Onshore 10% FY 2021 FY 2022 2M 2023 Electricity Generation PTTEP GWH 53% 4% 15% 13% 13% 32,333 54% 3% 17% 16% 10% 215,838 55% 2% 17% 16% 11% 209,717 Natural Gas Imported Hydro Electricity Renewable Energy Coal & Lignite Diesel Midstream Gas: operated by PTT Gas 73% Offshore 90% Transmission Pipelines Gas Separation Plants Liquid 27% % Production by Company PTTEP 66% Others 34% Downstream Oil: PTT participates through subsidiaries Petrochemicals Oil and gas marketing Refineries

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