PTTEP Energy Project Overview

Projects Update Q3/2022 PTTEP Thailand Malaysia G1/61 Erawan Current gas production 210 MMSCFD. 1st ramp-up target mid 2023. Total 4 WHPs have been installed with additional 4 WHPS within 2022. MTJDA Granted rights for additional exploration area and 10-year PSC extension to 2039. Add gas volume to Thailand at least 30 MMSCFD until 2025. SK410B Continue exploration campaign, another exploration well under result evaluation. Zawtika Minimal impact from gas pipeline leakage, fully repaired within 2 weeks. Continue drilling activities to maintain production with new phase 1D. * Myanmar G2P Ongoing preparation works PTTEP is participating in 24th Gulf of Thailand Bid Round PSC Scheme • Exploration 6 + 3 Yrs. Production 20 + 10 Yrs. • Abu Dhabi Offshore 1 and 3 UAE Abu Dhabi Offshore 2 Currently being evaluated for petroleum potential for future exploration Announced gas discovery approx. 2.5-3.5 TCF. Further drillings to appraise full block potential. Sharjah Onshore Area A Farm-in to acquire 25% stake. Project is in exploration phase. Algeria HBR Oil production commenced. Expect daily production in Q4/22 ~13 KBPD. Mozambique MZA1 Construction to resume pending security situation Brazil Portfolio Rationalization Divestment 9 Total 3 Blocks on Offer G1/65 ~84,000 sq.km. G2/65 ~15,000 sq.km. G3/65 11,500 sq.km. Feb 2023 Timeline Announcement of Successful Mid Sep 2022 Bid Submission May to Sep 2022 Data room Apr 2022 Announcement Bid Opening

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