Investor Presentaiton

Status of CCS/CCUS Projects in Indonesia August 2022 No Projects 1 Tangguh EGR/CCUS 2 Gundih CCUS/CO2-EGR 3 Sukawati CO2-EOR Conducted by bp Berau Ltd., study was conducted by CoE-ITB Pertamina, CoE ITB, JGC, J-Power, JANUS & Supported by METI Japan Pertamina, LEMIGAS, JAPEX & Supported by METI Japan • Repsol Sakakemang B.V. Inpex Masela Ltd. Joint Study Blue Ammonia & CCS Pertamina & PT. Panca Amara 4 CCS Sakakemang 5 Abadi CCS/CCUS 6 in Central Sulawesi 7 8 Study of CCUS for Coal to DME East Kalimantan CCS/CCUS Study 9 Arun CCS Utama, JOGMEC, Mitsubishi, ITB PT. Kaltim Parna Industri & ITB Pertamina & Chiyoda Corporation Carbon Aceh & PEMA Status FEED Preparation POD Ubadari dan Vorwata EGR/CCUS has been approved Phase-2 Study to mitigate uncertainties & risks Subsurface Study by Pertamina Study CO2-EOR as CCUS by Pertamina, LEMIGAS, JAPEX Site selection & characterization • Preparing Lab test for Feasibility • FS with ITB (Completed on July 2022) JSA Finalization Preparing required data by Pertamina Pre-Feasibility Study (surface facilities) Joint Study Agreement (JSA) has been signed, Preparing access data & CA MoU Carbon Aceh-PEMA has been signed Preparing for Joint Feasibility Study (Expected to be started in 2022) Internal study Onstream Target Schedule 2026/2027 2026 ■Pilot Test 2026-2027 ■Full Scale: 2031 2027 FS (July 2023) 2028 FS (Dec 2023) 2028 CO2 Stored Potential 25 to 33 million tCO2 for 10 to 15 yrs 3 million tCO2 for 10 yrs 7 to 14 million tCO2 for 15 yrs (base case 10 milliontCO2) 30 million tons of CO2 emissions for 15 years 70 million ton of Native CO2 by 2055 19 million tCO2 for 20 yrs 10 million tCO2 for 10 years 26 or 131 million tCO2 for 20 years, depends on scenarios 10 Ramba CCUS (CO2-EOR) Pertamina 11 Central Sumatera Basin CCS/CCUS Regional Hubs Pertamina & Mitsui East Kalimantan & Sunda Asri 12 13 - Basin CCS/CCUS Regional Hubs CO2 Capture & Utilization to Methanol RU V Balikpapan 14 CCUS Study Pertamina & Air Liquide Pertamina & Chevron 2030 Preparing required data & CA 2028 Pertamina & Exxon Mobil Subsurface Evaluation 2028 15 Pilot Test CO2 Huff and Puff Jatibarang JSA has been signed, Joint Study until 2023 Discussion on field candidate, preparing JSA Validating the simulation result & preparing 2028 Pertamina & Region 2 - Zona 7 injection well, JSA with JOGMEC has been Pilot Test W4 Oct 2022 5 signed

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