#1PTTEP Investor Presentation Morgan Stanley Virtual ASEAN Conference 28 June 2023#2Cautionary Statement Forward-looking Information The information, statements, forecasts and projections contained herein reflect the Company's current views with respect to future events and financial performance. These views are based on assumptions subject to various risks. No assurance is given that these future events will occur, or that the Company's assumptions are correct. Actual results may differ materially from those projected. Petroleum Reserves Information In this presentation, the Company discloses petroleum reserves that are not included in the Securities Exchange and Commission of Thailand (SEC) Annual Registration Statement Form 56- 1 under "Supplemental Information on Petroleum Exploration and Production Activities". The reserves data contained in this presentation reflects the Company's best estimates of its reserves. While the Company periodically obtains an independent audit of a portion of its proved reserves, no independent qualified reserves evaluator or auditor was involved in the preparation of reserves data disclosed in this presentation. Unless stated otherwise, reserves are stated at the Company's gross basis. This presentation may contain the terms "proved reserves" and "probable reserves". Unless stated otherwise, the Company adopts similar description as defined by the Society of Petroleum Engineers. Proved Reserves - Proved reserves are defined as those quantities of petroleum which, by analysis of geological and engineering data, can be estimated with reasonable certainty to be commercially recoverable, from a given date forward, from known reservoirs and under current economic conditions, operating methods, and government regulations. Probable Reserves - Probable reserves are defined as those unproved reserves which analysis of geological and engineering data suggests are more likely than not to be recoverable. 2#3KKK PTTEP Company Information#4E&P Flagship of PTT Group 3,969.9 Million shares ~17 PTT 64% Local 19% Institutions Foreign Institutions 14% Retails 3% As of latest book closing Feb 2023 90% Billion USD Of Sales Rev HPO High Performance Organization Governance, GRC Risk Management and Compliance SVC Sustainable Value Creation ~15 USD/BOE Sustainability Yearbook Member S&P Global ESG Score 2022 S&P Global Sustainable1 Sustainability THSI THAILAND SUSTAINABILITY INVESTMENT 2022 2016-2022 FTSE4Good 2016-2022 Market Capitalization In SET Generated from SEA & ME Competitive Cash Cost 4 MSCI Level "AA" CDP DISCLOSURE INSIGHT ACTION Level "B" PTTEP#5Strategy for Sustainable Growth 1 DRIVE VALUE Strengthen E&P and ensure Thailand energy security ☐ Maximize production ☐ ■ Expedite development Monetize discovery Enhance competitiveness of unit cost Expand gas-weighted portfolio and LNG business 2 DECARBONIZE Manage E&P for lower carbon portfolio Execute GHG emission reduction plan ○ Accelerate CCS projects Maximize use of renewable and future energy in operation ○ Pursue emission offsetting and Ocean for life LO 5 3 DIVERSIFY Scale-up Al & Robotic Ventures (ARV) ○ Capture gas-to-power and renewable energy opportunity Explore CCUS, H2 and future energy Commercialize in-house technology PTTEP#6Diversified E&P Asset Portfolio Oil Rest of the World • Small presence in Kazakstan's Dunga oil field • Small presence in Australia, Mexico for exploration blocks. Africa Oil Oil Thailand Home Base • 68% of total sales volume (3M2023) • Mainly piped gas business · Key assets: G1/61 (Erawan), G2/61 (Bongkot), Contract 4, and Arthit offshore in the Gulf of Thailand and S1 onshore oil field. Piped Gas Book Value of Assets by region Total USD 25.6 billion Others 2% Middle East 12% 16% Africa Southeast Asia 24% Thailand 46% Growth opportunity ⚫1% of total sales volume (3M2023) • Key assets include oil fields in Algeria's Bir Sebah and Hassi Bir Rakaiz projects • Large LNG project in Mozambique under development phase Middle East Strategic Locations Oil Gas/LNG • 12% of total sales volume (3M2023) • Focus Oman and UAE Key assets: Oman Block 61, PDO Block 6, and other exploration blocks and UAE 3 offshore and 2 onshore exploration blocks As of March 2023 CO 6 PTTEP Southeast Asia Strategic Locations •19% of total sales volume (3M2023) mainly from Malaysia and Myanmar with small presence in Vietnam and Indonesia • Production of gas and crude oil • Key assets include Zawtika, Yadana in offshore Myanmar, and SK309/SK311, Block K, Block H in offshore Malaysia.#7Target Net Zero PTTEP 2020 Base Year 2030 30% GHG Intensity* Reduction 2040 50% GHG Intensity Reduction 2050 NET ZERO Greenhouse Gas Emissions E&P, Operational Control SCOPE 1 & 2 用白 *Intensity refers to GHG released in Tonne CO2e per thousand tonnes of hydrocarbon production 7#8Growing Beyond E&P Decarbonization New Energies Corporate Venture Capital (CVC) Technology Enabler Carbon Capture & Utilization (CCU) CO₂-to-Methanol Value-added Technology 餐 餐 餐 # Carbon Capture & Storage (CCS) Initiative Support Decarbonization Demand HYDROGEN H2 Hydrogen / Power-to-X OGE Advanced Technology In-house Tech Act now for Future Energy/Fuel Commercialize in-house technology Power Business • Gas-to-Power Renewables AI AND ROBOTICS VENTURES Al & Robotic Foundation for new energies 8 Growth in Technology Business PTTEP#9KKK PTTEP Business Update#10Q1/2023 Highlights A E&P G1/61 Erawan Ramping-up in progress G2/61 Bongkot Full transition to PSC completed G1/65, G3/65 New exploration blocks in Thailand SK410B Lang Lebah FEED in-progress for FID SK325 New exploration block in Malaysia UAE Offshore 2 Potential to accelerate development Mozambique LNG Aiming for site re-access Algeria HBR Operating at 14KBPD, aim towards 17KBPD Decarbonization Efforts CCS Arthit At 1 MtCO2e/yr. capacity. FEED in-progress. Solar S1 9.98 MW solar farm, construction in progress for COD GHG Reduction initiatives PTTEP Flare Gas Recovery, Process optimization / Energy efficiency initiatives/ WHP Jacket re-use / Offset portfolio (Re-forestation, Blue Carbon) Beyond E&P Green e-methanol Feasibility study for e-methanol plant. CCS As-A-Service Explore CCS business potential in GOT MOU feasibility study within PTT Group ARV - Varuna Launched a pilot project in carbon farming to reduce greenhouse gas emissions and promote sustainable agriculture.#11GHG Reduction Roadmap Exploring for Lower Carbon E&P Portfolio Partnership on decarbonization pathway GHG criteria for investment decision Balance production and emissions Production and Planet in Balance Production Zero Routine Flare for new projects Carbon Capture Utilization and Storage (CCUS) Digitalization of operations Maximize use of renewable energy Explore future clean energy Accumulated GHG Reduction 407 MMUSD 5-Year (2023-2027) Investment plan Exploring for Lower Carbon Production Planet in Balance 22 1.5 MMTCO2e MMTCO2e 58 MMTCQ2e 125 MMTCO2e 2022 2030 2040 2050 Planet in Balance Manage carbon credit Leave "No Footprint" in countries we operate Explore offsetting opportunities Accumulated Carbon Credit Portfolio* 52 MMUSD 5-Year (2023-2027) Investment plan *Secure offset for net zero and use for compliance 4 MMTCO2e Partially used for Net Zero GHG Emissions in 2050 EE/RE* 33% CCS 48% PTTEP 19% Process Optimization 2050 GHG Reduction Initiatives * EE/RE: Energy Efficiency, Renewable Energy Land 6% Forest Acquisition 49% 10% Blue Carbon DAC 35% 2050 Carbon Credit Portfolio#12KKK PTTEP Financial Results#13Q1/2023 Results Q1 2023 Key events Net Profit P/L from normal operation P/L from non-operating items Profit from Normal Operations Sales Volume Bongkot End of Concession QoQ 569 417 592 723 -306 Q4 22 -23 Q1 23 -8% Completion of Brazil Divestment YOY Court Approval Montara Settlement 569 318 592 570 -23 -252 Q1 22 Q1 23 +8% Average Selling Price Unit Cost Major Non-operating items (in million USD) Oil Price Hedging Impairment / Asset Write-off Others Mainly from Oman B61, Sabah-H, Arthit -5% Lower liquid price and gas price -11% Lower DD&A and G&A, Higher finance cost Q4 22 -2 -205 Moz./ Angola -58 Montara/Oman B61 Q1 23 +1 Higher G1/61, G2/61 offset with lower Oman B61 -3% Lower liquid price offset with higher gas price -2% Lower DD&A and Royalty, Higher OPEX Q1 22 -240 Q1 23 +1 13 PTTEP#14Volume and Price UNIT: BOED 500,456 Volume Mix 500,000 468,130 78,318 74,053 460,817 57,617 427,368 Gas Liquid 400,000 65,344 Rest of World 97,987 88,779 98,715 97,600 Other SEA 28% 28% 300,000 200,000 72% 72% Thailand & 324,151 295,362 314,421 264,424 MTJDA 100,000 Q4 2022 Q1 2023 Product Price 2022 Q4 22 Q1 23 Q1 22 Revenue Mix Gas ($/MMBTU) 6.27 6.70 6.52 6.07 Liquid ($/BBL) 94.89 85.40 78.14 91.19 45% 44% Weighted Avg. ($/BOE) 53.39 52.76 50.01 51.35 Avg. Dubai ($/BBL) 96.38 84.77 80.23 96.21 55% 56% Avg. HSFO ($/BBL) 82.38 62.44 64.22 87.96 (High Sulphur Fuel Oil) Q4 2022 Q1 2023 Note: Include sales volume from ADNOC Gas Processing (AGP) Exclude Oman Block 61 deemed sales volume from tax payment by government 14 PTTEP#15Unit Cost Unit: $/BOE 28.36 29.32* ** 30 26.07* 26.54 Cash Cost 20 Unit Cost 14.56 ☑ 15.22 14.25 13.11 ☑ Х 10 DD&A Finance Cost Royalties G&A Exploration Expenses Operating Expenses Lifting Cost 2022 Q4 22 Q1 23 Q1 22 13.80 14.10 11.82 13.43 1.37 1.21 1.86 1.35 4.02 3.78 3.39 4.27 2.46 ** * 3.36 2.20 2.23 0.42 0.16 0.26 0.15 6.29 6.71 * 6.54 5.11 4.42 4.64 4.48 3.87 * Note: Exclude Bongkot Goodwill write-off (OPEX) ** Exclude Montara Class action settlement (G&A) All Unit Cost shown above exclude costs related to new business The formulas for calculating ratios are provided in the supplementary section for your reference 15 PTTEP#16Cashflows & Financial Position PTTEP Cashflow & Financial Position Unit: million USD Unit: million USD Cash flow from operations (Before tax) 25,168 1,050 Inflow Outflow 25,566 Total Assets 3,539 270 1,753 Tax paid 658 CAPEX 122 Others EBITDA Margin 73% Other Liabilities 7,820 7,633 3,833 Interest-bearing Debt 3,849 4,242 Equity 13,515 14,084 Ending cash Q4 22 Note: Net of adjustment for the effect of exchange rate changes on cash and cash equivalents Q4 22 Ending cash Q1 23 Q1 23 Debt Profile Q4 22 Q1 23 Debt to Equity 0.28 0.27 Average Cost of Debt Q4 22 3.99% p.a. Q1 23 Interest Rates 3.99% p.a 100% Fixed rate Debt to EBITDA 0.56 0.56 Average Loan Life 15.2 Yrs 14.9 Yrs 16#17Results Guidance Sales Volume (KBOED) Outlook Q2 2023 FY 2023 ~437 ~456 Ratings Gas Price ~5.9 ~6.0 (US$/MMBTU) BBB+ Stable Unit Cost (US$/BOE) Profitability (EBITDA Margin) * Based on average Dubai oil price in 2023 at 75-80 $/BBL ~27-28 70-75% 17 BBB+ Stable TRIS RATING STANDARD & POOR'S RATINGS SERVICES MCGRAW HILL FINANCIAL BBB stand-alone rating MOODY'S Baa2 stand-alone rating Fitch Ratings bbb+ stand-alone rating PTTEP AAA Stable Baa1 Stable#18Thank you and Q&A +66 2 537 4000 [email protected] http://www.pttep.com A KKKI PTTEP#19Supplementary Information Reserves Profit and Loss Statement 220 21 Five-year Investment Budget 22 Debt Profile 23 Key Financial Ratios 24 E&P Portfolio 25-27 Thailand, Myanmar, Malaysia 25 Middle East 26 Africa 27 Beyond E&P 28 SD/ESG 29-30 Thailand Energy Market 31-32 Project Information 33-42 Organization Structure 43 Ratios and Formulas 44 Conversion Table 45 右開 PTTEP#20Reserves MMBOE 2,500 Reserves Life 2022 by Geography 2,286 Domestic International 10.7 Years 2,123 2,286 2,000 844 1,622 773 1,442 48% 6.8 Years 1,500 51% 548 52% 49% 1,000 P1 P1 + P2 1,350 1,442 500 1,074 2020 2021 2022 Proved (P1) Probable (P2) 5-Year Average Proved Reserves Replacement Ratio (RRR) 2020 1.5X 2021 1.9X 2022 2.0X 2022 by Product Type Gas Liquid 2,286 28% 1,442 25% 72% 75% P1 P1 + P2 Based on average production per day of natural gas, condensate, and crude oil (including LPG) of 585 KBOED for the year ended December 31, 2022 Figures include reserves from equity method As of December 2022 20 20 PTTEP#21Profit and Loss Statement Unit: million USD Total Revenues Sales (1) Sales Volume (BOED) Sales Price (US$/BOE) Others (3) Total Expenses Major Expenses: Operating Expenses Exploration Expenses G&A DD&A (2) Loss on Financial Instruments 2022 Q1 23 Q4 22 %QoQ Q1 22 % YoY 9,660 2,314 2,697 (14%) 2,083 11% 9,270 468,130 2,193 2,469 (11%) 2,030 8% 460,817 500,456 (8%) 427,368 8% 53.39 50.01 52.76 (5%) 51.35 (3%) 390 121 228 (47%) 53 >100% 7,681 1,757 2,294 (23%) 1,776 (1%) 1,110 360 321 12% 197 83% 72 11 8 38% 6 83% 578 100 293 (66%) 93 8% 2,363 492 184 g¥ 650 (24%) 517 (5%) 42 100 (58%) 245 (83%) Impairment Loss on Assets 300 205 (100%) Income Tax Expenses 2,061 535 487 10% 497 8% Share of profit (loss) from associates and JV 20 12 14 (14%) 11 9% Net Profit 1,999 569 417 36% 318 79% Profit (Loss) from normal operation 2,647 592 723 (18%) 570 4% (648) (23) (306) 92% (252) 91% Profit (Loss) from non-operating items Non-operating items breakdown: Oil Price Hedging Tax from Effect of FX Effect from FX and others Impairment Loss on Assets Montara Mediation agreement on Class Action Gain from a bargain purchase / Reversal of Contingent Liab. Note: (1) Include Oman Block 61 deemed sales revenues from tax payment by government (2) Exclude Oman Block 61 deemed sales volume from tax payment by government (186) 1 (2) >100% (240) >100% (15) 12 (100%) (2) (>100%) (89) (24) (53) 55% (10) 100% (300) (205) 100% (129) (129) 100% 71 71 (100%) (3) Consisted of Revenue from Pipeline, Gain from FX, Forward Contract, and Gain from Oil price Hedging, Gain from reversal of Oman Block 61 Contingent Liabilities 21 PTTEP#22Five-year Investment Budget PTTEP in KBOED 2023-2027 E&P Budget 29.1 bnUS$ CAPEX 18.1 bnUS$ OPEX 11 bnUS$ Production CAGR +6.3% 787 800 750 757 722 Sales Volume 700 648 581 600 535 510 531 550 468 470 11 11 24 Africa 500 11 6 9 56 56 67 67 69 53 400 100 109 106 119 Middle East Other SEA 99 99 300 200 295 309 343 359 347 340 Thailand &MTJDA 100 0 OPEX 2023 Exploration Budget 223 mus$ MUS$ CAPEX 193 mUS$ 30 mUS$ 2022 2023 2024 2025 2026 2027 MMUSD Actual 7,000 6,127 6,447 6,000 5,969 5,481 11 wells in Malaysia Investment 5,000 4,819 2,216 5,076 2,176 2,112 4,000 2,329 OPEX 2,389 1,041 2,144 971 779 CAPEX 3,000 317 293 (Dev & Pre-sanction 80 projects (3)) 2,000 5 wells in Thailand 1,000 2,350 2,835 2,980 3,190 3,078 2,639 CAPEX (Producing projects (4)) 0 1 well in Oman 2022 Actual 2023 2024 2025 2026 2027 Note: (1) Subject to site re-entering and resume (3) construction timing (2) Subject to regulatory approval and FID timing Development & Pre-sanction projects include Mozambique LNG, SK410B, and Southwest Vietnam (4) Including exploration and appraisal in all projects and head office CAPEX, and new businesses Key Project Start-up G2/61 March G1/61: April Capacity 700 MMSCFD (Apr 22: 200 MMSCFD Mar'23: 500 MMSCFD) Full Capacity 800 MMSCFD 22 Southwest Vietnam: 2H (2) MZA1 LNG: 1H (1) HBR (Full phase): 2H (2) SK410B: 2H (2) SK405B: 1H (2)#23Debt Profile USD Millions 700 600 500 400 300 200 100 0 2023 As of March 2023 2024 2025 182 2026 2027 Unit: USD Millions or equivalent after cross currency swap 2028 648 2029 23 23 379 350 2030 2031 2032 179 2033-2041 2042 2043-2058 490 2059 650 PTTEP#24Key Financial Ratios EBITDA Margin PTTEP Q4 2022 Q1 2023 73% 73% Profitability Ratios (%) Return on Equity 15% 17% Net Profit Margin 21% 22% Debt to Equity 0.28 0.27 Leverage Ratios (Times) Debt to EBITDA 0.56 0.56 Liquidity Ratio (Times) 24 Current Ratio 1.72 2.11#25E&P Portfolio | Thailand, Myanmar, Malaysia Myanmar Production Zawtika (WI 80%) • Production Volume gas 324 MMSCFD (3M2023) Yadana (WI 37.1%) • Production Volume gas 538 MMSCFD (3M2023) Exploration M3 (WI 100%) • Pending development Malaysia Production Block K (WI Kikeh 56%, SNP 22.4%, GK 7.2%) • Production Volume crude 25 KBPD and gas 18 MMSCFD (3M2023) Block H (WI Rotan 56%, Others 42%) • Production Volume gas 174 MMSCFD (3M2023) SK309 and SK311 (WI 42-59.5%) Including East Patricia field • Production Volume gas 223 MMSCFD, and crude 15 KBPD (3M2023) Exploration • SK410B (LLB), SK417, SK314A, SK438, SK405B • PM415, PM407, SK325 Myanmar S1 Sinphuhom E5 M3 Thailand Yadana Zawtika MD7 G1/65 B8/32 & 9A G1/61 (Erawan) Arthit Contract 4 Bongkot & G2/61 PTTEP Thailand SK417 SK309& SK311 Production G1/61 Erawan (WI 60%) • 3M2023 daily gas production 210 MMSCFD Ramp-up in progress to 800 MMSCFD in Apr 2024 • Sole investment 100% G2/61 Bongkot (WI 100%) • PSC transition completed since 8 Mar 2023. • Daily gas production at more than 800MMSCFD (will be producing at 700MMSCFD from Jan 2024 onward) Arthit (WI 80%) • Production Volume gas 290 MMSCFD and condensate 15 KBPD (3M2023) Contract 4 (WI 60%) • Production Volume gas 420 MMSCFD and condensate 15 KBPD (3M2023) S1 (WI 100%) • Production Volume crude oil 25 KBPD (3M2023) MTJDA (WI 50%) • Production Volume gas 330 MMSCFD (3M2023) • Supplying to Thailand at least 30 MMSCFD MTJDA G3/65 Sabah H Sabah K SK410B Malaysia SK325 SK438 PM415 SK405B Production Exploration 25 25 PM407 SK314A Exploration • G1/65 and G3/65#26E&P Portfolio | Middle East UAE Abu Dhabi Offshore 1 Exploration Abu Dhabi Offshore 1, 2, 3 (WI 30%) • High potential prospective resources with significant sizeable discoveries Operated by ENI (WI 70%) Sharjah Onshore Area A (WI 25%) . Completely signed a Farm-in/Farm-out Agreement . Operated by ENI (WI 50%) Sharjah Onshore Area C (WI 25%) • High gas & condensate potential with the possibility of • integrating with surrounding fields Operated by ENI (WI 50%) Midstream ADNOC Gas Processing (WI 2%) • AGP is one of the largest gas processing complexes in the world (total capacity of 8 BCFD) • JV: 3 plants with capacity of 1.2 BCFD • ADNOC: 2 plants with capacity of 6.9 BCFD • Essential to Abu Dhabi and UAE economy • Sizable volume of Propane, Butane and Naphtha • Operated by ADNOC (WI 68%) Abu Dhabi Offshore 2 Production phase Exploration phase Midstream Abu Dhabi Offshore 3 AGP OMAN PTTEP Sharjah Onshore Area C OLNG Production Block 6 (PDO) (WI 2%) • Largest asset covering around 1/3 of the country. Average oil production volume of 648 KBPD (3M2023) Operated by Petroleum Development of Oman Block 53 (WI 1%) • Largest single onshore producing field in Oman. Average oil production volume of 86 KBPD (3M2023) • Operated by Occidental (WI 47%) Block 61 (WI 20%) • Largest tight gas development in Middle East • Gas and condensate daily production rate of 1,460 MMSCFD and 56 KBPD (3M2023). PDO (Block 6) UAE Oman Onshore Oman Block 61 OMAN Block 12 26 26 Mukhaizna (Block 53) • Operated by BP (WI 40%) Exploration Onshore Block 12 (WI 20%) • Operated by Total E&P Oman (WI 80%) Midstream OMAN LNG (WI 2%) • The only LNG facility in Oman. Operated by Government of Oman (WI 51%)#27E&P Portfolio | Africa Algeria Production 433a & 416b (WI 35%) • Oil production consisting of block 433a, 416b • Operated by PVEP (WI 40%) Average Daily Production volume of crude at 17 KBPD Hassi Bir Rekaiz (WI 49%) • HBR oil field consisting of block 443a, 424a and 415ext ⚫ 1st Oil in June 2022 and started delivering sales volume in Q4/2022. • Operated by Groupment (WI 51%) • Average Daily Production volume of crude at 14 KBPD Angola Development Block 17/06 (WI 2.5%) • FID in July 2022 for Begonia offshore oil field in the Lower . Congo Basin. Operated by Total Energies (WI 30%) • Divestment in progress estimate completion in 2023 Bir Seba ALGERIA Hassi Bir Rekaiz Block 17/06 Production Development ANGOLA MOZAMBIQUE 27 22 PTTEP Mozambique MZA1 Development Area 1 (WI 8.5%) • High quality reservoirs capable up to 200 MMSCFD per well • Construction phase for LNG facility with capacity 13.1 MTPA (2 trains). • Currently under Force Majeure due to local security situation . Operated by TotalEnergies (WI 26.5%)#28AI AND ROBOTICS VENTURES VENTURES BUILDER ARV is a Ventures Builder principally engaged in the research, development and provision of solutions using Artificial Intelligence and Robotics technologies, as well has ventures ideation, incubation, development and commercialization. BUSINESS UNITS ARV has successfully spun-off start-ups into separate legal entities focused on further commercialization and development of their respective deep-tech domains. ROVULA Unmanned Robotic Technologies and Data Analytics for Marine, Offshore and Underwater Assets SKYLLER Al-driven and Autonomous Aerial Drone Technologies, Operations and Data Analytics for Various Industries and Operations varuna One-Stop Agriculture and Climate Technology Solutions 金龙 CARIVA Health Solutions Platform that Simplifies Data Access, Manage Security and Accelerates the Creation of Digital Health Solutions bind Bridging Identity, Network and Data Software Solutions for Security, Privacy, and Data Controlling in the Web 3.0 > bedrock Geospatial Location Intelligence Platform and Al Technology to provide advanced location insights XGATEWAY Unmanned Surface Vehicle for Hydrographic Survey and Surveillance XPLORER Autonomous Underwater Vehicle for Subsea Pipeline Inspection NAUTILUS Underwater Robotic System for Inspection, Repair & Maintenance of Subsea Pipelines XSPECTOR IA cloud-based data management platform specifically tailored for subsea inspection and survey operations JOINT VENTURES ROVULA HORRUS Autonomous Nested Drone Systems for Asset Inspection, Surveillance and Mapping SKYLLER PLAFORM Data Platform for Fleet Management, Data Visualization and Analytics SKYLLER AI ML Al-Assisted anomalies detection for fast and accurate decision making UAV LOGISITIC DELIVERY Drone Delivery Solutions for intra-city, long range and remote delivery of critical cargo and parts MAKARA JOINT VENTURES SKYLLER AiANG SPRAYER UAV UAV for blanket and precision- spraying services for various crops SMART FOREST Green Area management platform and carbon credit solution KANNA Carbon Farming and nature Based climate action MAKARA Data management platform with satellite analytics JOINT VENTURES VARUNA HEALTH APPLICATIONS Variety of completed health applications for Health and wellness solutions HARDWARE SOLUTIONS Seamless integrate to software with loT and Robotics solutions BUILDING BLOCKS Data management and software API platforms for building the custom-made digital health solutions. JOINT VENTURES CARIVA Digital Corporate ID Automatic and Seamless Verification of Digital Signature with with E-Power of Attorney and National Identities of the Singers in any corporate transactions with global interoperability $177 TRUSTME Secured Wallet that keeps all identities and personal data JOINT VENTURES BIND CITY DIGITAL DATA PLAFORM Platform to supporting cities to operate urban infrastructure components and services efficiently with data connectivity MUNICIPAL TAX PLATFORM One-stop tax collection & valuation intelligent system to facilitate citizens for submission of online petition form, payment check and status tracking BUILDING PERMIT PLATFORM The integration of Al and GIS to streamline rive accurate, quick and convenient permission processes for officer and citizen ASSET MANAGEMENT PLATFORM Allows government offices to monitor, review and update assets' status for informed evaluation and decision making JOINT VENTURES BEDROCK ZEAQUEST S2 ROBOTICS aerosky SKYVIV SKY VISUAL IMAGING VENTURE ATI 28 28 B-MED#29Sustainability Highlights PTTEP PTTEP ОТ ОНА ГОЛОК ЈАТИЗмисятия СИА аккусВНЯ ЗАЯУТАЙ ТО КОЧи PTTEP and ONEP join forces to tackle climate and biodiversity crises Signing ceremony of a Memorandum of Understanding to launch joint actions on climate change and biodiversity conservation of Thailand on 14 March 2023 M PTTEP พิธีลงนามบันทึกความเข้าใจ เรื่อง ความร่วมมือการดำเนินงานด้านการเปลี่ยนแปลงสภาพภูมิอากาศ และการอนุรักษ์ความหลากหลายทางชีวภาพ ระหว่าง บริษัท ปตท.สำรวจและผลิตปิโตรเลียม จำกัด (มหาชน) และ สํานัก — นโยบายแล นทรัพยาก รมชาติและ เวดล้อม 14 Objectives Drive Thailand towards the carbon neutrality and low-carbon society goals involving to support the private sector on the measures and financial mechanisms to reduce GHG emissions i.e., CCUS, DAC Conserve and rehabilitate natural resources and biodiversity as well as establish a link of biodiversity data sources with national database Remark: ONEP; Office of Natural Resources and Environmental Policy and Planning 29 20 Systematically integrate the collaboration of public-private activities in the national, regional and international levels and the building of public awareness#30ESG Disclosure & Ratings Social Human Development Resource S&P Global Ratings 100 80 AAA HESS Human Economic Rights ESG Climate & Disclosure Environment Health & Safety MSCI equinor Innovation & Technology Supply Chain Governance, Risk Management & Compliance ESG Ratings MOODY'S A 60 TotalEnergies Woodside PTTEP HESS REPSOL AA Woodside PTTEP 1 REPSOL A bo Santos TotalEnergies eni 2 en equinor bp Chevron 40 Santos PetroChina ExxonMobil 20 20 PTTER BBB BB B CCC ExxonMobil Chevron PetroChina HESS Woodside equinor PTTEP eni bp A- B B- equinor REPSOL ESG Standards GRI Global Reporting Initiative Reporting Standards (GRI Standards) Oil and Gas Sector Disclosures (OGSD) # CDP DISCLOSURE INSIGHT ACTION 0-10 SUSTAINALYTICS a Morningstar company As of December 2022 Source: S&P Global, MSCI, Moody's, CDP, SUSTAINALYTICS' websites TotalEnergies HESS 30 90 PTTEP bp 10-20 REPSOL TotalEnergies ExxonMobil 20-30 Chevron D D- 30-40 bp HESS equinor REPSOL PTTEP eni TotalEnergies Woodside Chevron ExxonMobil Santos 5 No Response Chevron Woodside PetroChina ExxonMobil Santos 40+ PetroChina#31VALUE 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#32Thailand Energy Market | Oil & Gas Balance Oil Balance*** Maintains stability supply through adequate refining capacity Natural Gas Balance* **** Main driver of the Thailand economy SALES PRODUCTION SUPPLY Source: PTT Note: * ** Import (88%) 984 KBD Gulf of Thailand (53%) Indigenous (12%) 131 KBD Imported Refined Petroleum Products 71 KBD Crude/ Condensate 913 KBD Total Refining Capacity in Thailand 1,242 KBD Crude/ Condensate 119 KBD PTT's Associated Refineries 770 KBD (TOP, PTTGC, IRPC) Crude Export 12 KBD Other Refineries 472 KBD (SPRC, ESSO, BCP) Refined Products Refined 1,046 KBD * Products 162 KBD Domestic 944 KBD ** Export 174 KBD Refined product from refineries = 968 KBD, including domestic supply of LPG from GSPs and Petrochemical Plants = 78 KBD Included Inventory ***Information as of 12M 2022 **** Information as of 12M 2022 MMSCFD @ Heating Value 1,000 Btu/ft³ 32 Others 36% PTTEP 64% Onshore (3%) 2,224 MMSCFD Bypass Gas 213 MMSCFD 6 Gas Separation Plants Total Capacity 2,870 MMSCFD Import (44%) Myanmar 37% LNG 63% @Actual Heat 109 MMSCFD 1,839 MMSCFD Methane 1,231 MMSCFD 780 MMSCFD (18%) Petrochemical Ethane Propane Feedstock LPG (11%) NGL Power (59%) Industry (20%) Industry Household LPG NGV (3%) Transportation NGL (7%)#33Projects Details | Thailand 1 Arthit 2 B6/27 Sales Vol Gas Sales Vol Liquid Project Name Status Phase Participating Interest* (%) Latest Status (MMSCFD) (KBPD) OP Production PTTEP 80% 280 15 Ensure gas delivery at the highest DCQ Chevron 16% MOECO 4% OP gp Production PTTEP 100% PTTEP Prepare for decommissioning activities The Final Decommissioning Plan (FDP) and Decommissioning Cost Estimation (DCE) were approved by DMF . 12 Normal operations JV Production 3 B8/32 & 9A PTTEP 25.00% 40 40 Chevron 51.66% MOECO 16.71% KrisEnergy 4.63% Palang Sophon 2% OP Production 4 Bongkot PTTEP 66.67% 508 17 TotalEnergies 33.33% OP Production 5 G12/48 PTTEP 66.67% 9 TotalEnergies 33.33% JV 6 Contract 4 (Pailin) M Production PTTEP 60% 405 15 Chevron 35% MOECO 5% JV 7 E5 M Production PTTEP 20% 7 ExxonMobil 80% Note: * ** PTTEP denotes respective PTTEP subsidiaries participating in the project Sales volume represent average volume for 100% of the project during 3M2023 *** Status: OP PTTEP operatorship/JOC = PTTEP joint operatorship/ JV = PTTEP Joint Venture Partner **** DCQ Daily Contractual Quantity 33 The remaining block was ended on 7 Mar 2023 and transitioned to G2/61 under PSC. Normal operations Ensure gas deliverability level at DCQ. On-going drilling additional development wells activities. Maximize gas potential at CDC level.#34Projects Details | Thailand Project Name Status Phase Participating Interest* (%) Sales Vol Gas (MMSCFD) Sales Vol Liquid Latest Status (KBPD) 8 G4/43 JV Production 1 2 PTTEP 21.375% Normal operations Chevron 51% MOECO 21.25% Palang Sophon 6.375% 9 G4/48 JV Production 1 PTTEP 5% Decommissioning activities in progress Chevron 71.25% MOECO 23.75% 10 L53/43 & L54/43 Co OP Production 1 PTTEP 100% 11 PTTEP 1 12 S1 OP Production PTTEP 100% OP Production 4 PTTEP 100% 13 Sinphuhorm OP Production PTTEP 55% Apico 35% ExxonMobil 10% OP 14 L22/43 Production PTTEP 100% Note: * *** PTTEP denotes respective PTTEP subsidiaries participating in the project Sales volume represent average volume for 100% of the project during 3M2023 Status: OP = PTTEP operatorship/ JOC = PTTEP joint operatorship/ JV = PTTEP Joint Venture Partner 89 99 34 =4 PTTEP 0.2 Crude: 25 KBPD LPG: 159 MTon/Day 0.2 Completed drilling campaign. Plan to start 1st oil production in 2023. Maintain production plateau On-going drilling development wells activities. On-going production optimization and long-term development according to proposed business plan and work plan's activities. Maximize gas potential at CDC level. In process to preparing drilling campaign in 2023. On-going evaluation of drilling results to determine further production/ development plans.#35Projects Details | Thailand | Project Name Status Phase 15 MTJDA 16 G9/43 Sales Vol Gas Sales Vol Liquid Participating Interest* (%) Latest Status (MMSCFD) (KBPD) 310 7 50% Normal operations 50% JOC Production PTTEP CPOC OP Exploration PTTEP 100% 17 G1/61 (Erawan) OP Ho Production 214 PTTEP 60% Condensate: 4 KBPD Crude: 8 KBPD • Mubadala 40% 18 G2/61 (Bongkot) OP Production 379 11 PTTEP 100% 19 G1/65 OP Exploration PTTEP 100% 20 20 Note: * G3/65 OP Exploration PTTEP 100% PTTEP denotes respective PTTEP subsidiaries participating in the project Sales volume represent average volume for 100% of the project during 3M2023 Status: OPPTTEP operatorship / JOC = PTTEP joint operatorship/ JV = PTTEP Joint Venture Partner 35 PTTEP Installed 2 WHPS On-going drilling activities on development and exploration/appraisal wells. Activity suspended All 6 rigs are in operations On-going drilling activities on existing and new platforms The remaining blocks of Bongkot was transitioned on 8 Mar 2023. Installed 1 sealine and 1 WHPS. On-going drilling activities on existing and new platforms. PSC signed. To start exploration phase. PSC signed. To start exploration phase.#36Projects Details | Southeast Asia Project Name Malaysia Block K 1 - Kikeh - Siakap-North Petai field (SNP) - Gumusut-Kakap field (GK) Participating Interest* (%) Sales Vol Gas (MMSCFD) Sales Vol Liquid (KBPD) Status Phase OP (Kikeh & SNP) Production PTTEP JV (GK) Kikeh 56% SNP 22.4% GK 7.17% 18 ** 25 ** Latest Status Continued inspection and maintenance activities. 42-59.5% 223 ** 15 ** On-going well hookup activities 42-56% 174 ** 2 Malaysia SK309 and SK311 OP Production PTTEP 3 Malaysia Block H OP Production PTTEP 4 Malaysia - Other projects OP Exploration PTTEP 42.5 -80% (varied by permits) 5 Yadana (Myanmar) OP Production 524 PTTEPI 37.1% Chevron MOGE 41.1% 21.8% 6 Zawtika: M9 & a part of M11 (Myanmar) OP Production 315 PTTEP 80% Myanma Oil and 20% Gas Enterprise (MOGE) Note: PTTEP denotes respective PTTEP subsidiaries participating in the project *** Sales volume represent average volume for 100% of the project during 3M2023 except Malaysia (Production volume 100%) / For Block K, gross production is net off unitization Status: OP = PTTEP operatorship/JOC = PTTEP joint operatorship/JV = PTTEP Joint Venture Partner 36 PTTEP Ensure gas delivery at DCQ Preparing for exploration wells drilling in early 2023 SK410B Under evaluating the drilled result. For LLB, expect FID 2023. SK417: Preparing to drill an appraisal well and evaluating prospects well. SK405B: On-going drilling 1 exploration well. SK438 Preparing to drill 2 exploration wells. SK314A Under evaluating the drilled result. SB412 On-going 3D seismic reprocessing, evaluating prospects well and G&G study. Major activities were completed as planned. On-going to infill drilling study and preparation Maintain operations Completed 4 additional wellhead platforms and 5 appraisal wells to support the development of future phase#37Projects Details | Southeast Asia Participating Interest* (%) Sales Vol Gas (MMSCFD) Sales Vol Liquid (KBPD) 100% Project Name Status Phase 7 Myanmar M3 OP Exploration PTTEP 8 Vietnam 9-2 JOC Production PTTEP 25% 10 3 Vietnam Oil and 50% Gas Group Pharos Energy 25% 9 Vietnam 16-1 JOC Production LO 5 12 PTTEP 28.5% Vietnam Oil and 41% Gas Group Pharos Energy 28.5% OPECO 2% 10 10 Vietnam B & 48/95 JV Exploration PTTEP 8.5% Vietnam Oil and 65.88% Gas Group MOECO 25.62% 11 Vietnam 52/97 JV Exploration PTTEP 7% Vietnam Oil and 73.4% Gas Group MOECO 19.6% 12 Natuna Sea A (Indonesia) JV Production 112 PTTEP 11.5% Harbour Energy 28.67% KUFPEC 33.33% Petronas 15% Pertamina 11.5% Note: * PTTEP denotes respective PTTEP subsidiaries participating in the project Sales volume represent average volume for 100% of the project during 3M2023 *** Status: OP PTTEP operatorship/JOC = PTTEP joint operatorship/ JV = PTTEP Joint Venture Partner 37 Latest Status Pending for development Completed drilling the first development well Prepare proposal for Petroleum Contract Extension (5 yrs.) Prepare proposal for Petroleum Contract Extension (5 yrs.) PTTEP In the negotiation process on commercial terms in order to push forward the Final Investment Decision (FID) In the negotiation process on commercial terms in order to push forward the Final Investment Decision (FID) Continue further compression project activities#38Projects Details | Middle East Sales Vol Gas Project Name Status Phase Participating Interest* (%) (MMSCFD) Sales Vol Liquid (KBPD) Latest Status 1 Abu Dhabi Offshore 1 JV Exploration PTTEP 30% G&G study is ongoing (UAE) Eni 70% 2 Abu Dhabi Offshore 2 JV Exploration PTTEP 30% (UAE) • Eni 70% 3 Abu Dhabi Offshore 3 (UAE) JV Exploration PTTEP 30% Completed drilling appraisal well Under development plan preparation for the discovery area G&G study is on-going Eni 70% 4 Sharjah Onshore Area A JV Exploration PTTEP 25% In progress of exploration well drilling preparation (UAE) Eni 50% SNOC 25% 5 Sharjah Onshore Area C (UAE) JV Exploration PTTEP 25% Seismic processing in progress Eni 50% SNOC 25% 6 Oman Block 6 (PDO) JOC Production PTTEP 2% 648 ** Normal operations Government of Oman 60% Shell 34% TotalEnergies 4% Note: ** *** PTTEP denotes respective PTTEP subsidiaries participating in the project Sales volume represent average volume for 100% of the project during 3M2023 except for Oman Block 6 (PDO) (Production volume 100%) Status: OP PTTEP operatorship/JOC = PTTEP joint operatorship/ JV = PTTEP Joint Venture Partner 38 PTTEP#39Projects Details | Middle East Sales Vol Gas Sales Vol Liquid Project Name Status Phase 7 Oman Block 53 Participating Interest* (%) Latest Status (MMSCFD) (KBPD) JV Production 86** Normal operations PTTEP Occidental 1% 47% OOCEP 20% Indian Oil 17% Mubadala 15% 8 Oman Onshore Block 12 JV Exploration PTTEP 20% Total E&P Oman Block 80% G&G study is on-going Plan for exploration wells drilling in 2023-2024 12 B.V. 9 Oman Block 61 JV Production PTTEP 20% 1,442 55 • Normal operations BP 40% Makarim Gas 30% Development LLC Petronas 10% Note: PTTEP denotes respective PTTEP subsidiaries participating in the project Sales volume represent average volume for 100% of the project during 3M2023 except for Oman Block 53 (Mukhaizna) (Production volume 100%) Status: OP PTTEP operatorship/JOC = PTTEP joint operatorship/ JV = PTTEP Joint Venture Partner 39 89 PTTEP#40Projects Details | Rest of the World PTTEP Project Name Status Phase 1 PTTEP Australasia OP Exploration PTTEP Participating Interest* (%) Sales Vol Gas (MMSCFD) Sales Vol Liquid (KBPD) 90%-100% 2 Mozambique Area 1 JV § Development PTTEP 8.5% TotalEnergies, Mitsui, 26.5%,20% ENH, OVL 15%, 10% Latest Status Cash Maple (AC/RL7): Defining proper direction in order to increase development opportunities Tenacious (AC/RL4) and Oliver (AC/RL12): Well abandonment in progress The project is still under Force Majeure and suspension The current security situation has improved greatly and more manageable Plan to resume construction activities after security and safety restored OVRL & Oil India, 10%, 10% Bharat 3 Algeria 433a & 416b JOC Production 17 ** GBRS 35% On-going drilling activities (Bir Seba) PetroVietnam 40% Continue produce new wells and intervention existing wells. Sonatrach 25% 4 Algeria Hassi Bir Rekaiz OP Production 9 GHBR 49% On-going well performance evaluation & subsurface study Sonatrach 51% 5 Mariana Oil Sands ho OP Exploration PTTEP 100% (Canada) Reclamation activities in progress to return the area to Canadian government Note: * PTTEP denotes respective PTTEP subsidiaries participating in the project Sales volume represent average volume for 100% of the project during 3M2023 except for Algeria 433a & 416b (production volume) Status: OP PTTEP operatorship / JOC = PTTEP joint operatorship/ JV = PTTEP Joint Venture Partner 40 40#41Projects Details | Rest of the World PTTEP Project Name Status Phase Participating Interest* (%) Sales Vol Gas (MMSCFD) Sales Vol Liquid Latest Status (KBPD) 6 Mexico block 12 (2.4) JV Exploration PTTEP 20% Evaluating the remaining petroleum potential Petronas 60% Ophir Mexico 20% 7 Mexico block 29 (2.4) JV M Exploration PTTEP 16.67% Pre-development study in progress Repsol 30% PC Carigali Mexico Wintershal DEA 28.33% 25% 8 Block 17/06 (Angola) JV Pre-development PTTEP 2.5% In process of SPA to sell all interest, the completion expected by mid-2023 TotalEnergies 30% Sonangol 30% SSI 27.5% Acrep 5% Falcon Oil 5% 9 Dunga (Kazakhstan) JV = Production 1 11 PTTEP 20% Normal operations TotalEnergies OOCEP 60% 20% Note: * PTTEP denotes respective PTTEP subsidiaries participating in the project Sales volume represent average volume for 100% of the project during 3M2023 *** Status: OPPTTEP operatorship / JOC = PTTEP joint operatorship/ JV = PTTEP Joint Venture Partner 41#42Projects Details | Rest of the World Project Name Status Phase 1 Oman LNG Participating Interest* (%) Sales Vol Gas (MMSCFD) Sales Vol Liquid (KBPD) Shareholder Production N/A N/A PTTEP 2% Government of 51% Oman Shell 30% TotalEnergies 5.54% Korea LNG 5% Mitsubishi 2.77% Mitsui 2.77% Itochu 0.92% 2 ADNOC Gas Processing (AGP) [UAE] JV ✓ Production N/A N/A PTTEP 2% ADNOC 68% Shell 15% TotalEnergies 15% Note: * *** PTTEP denotes respective PTTEP subsidiaries participating in the project Sales volume represent average volume for 100% of the project during 3M2023 Status: OP = PTTEP operatorship/JOC = PTTEP joint operatorship/ JV = PTTEP Joint Venture Partner 42 42 Normal Operations Total capacity 10.4 MTPA Normal Operations Total capacity 8 BCFD Latest Status PTTEP#43Organization Structure Corporate Governance and Sustainable Development Committee Audit Committee Internal Audit Division E&P Legal Division Board of Directors Nominating and Remuneration Committee Chief Executive Officer Risk Management Committee Safety, Security, Health and Environment Division Branding, Communications, and Knowledge Intelligence Division Corporate Secretary and Assurance Division PTTEP Engineering, Development, 自自自由自自自自 Geosciences, Strategy and Technology and Finance and Domestic International Operations Subsurface, and Sustainable Carbon Accounting Production Production Support Group Exploration and Maintenance Growth Group Solutions Group Group Asset Group Asset Group Group Group 43#44Ratios and Formula Oil and Gas Reserves Reserves Replacement Ratio Reserves Life Index (Year) 5-Yr Additional Proved Reserves / 5-Yr Production Volume Profitability Success Ratio Sales Revenue Lifting Cost ($/BOE) Cash Cost ($/BOE) Unit Cost ($/BOE) EBITDA EBITDA Margin Return on Assets (ROA) Return on Equity (ROE) Total debt Net debt Debt to Equity Net Debt to Equity Leverage Total Debt to Capital Total Debt to EBITDA Net Debt to EBITDA EBITDA Interest Coverage Ratio Proved Reserves / Production Volume Number of wells with petroleum discovery / Total number of exploration and appraisal wells Sales + Revenue from pipeline transportation (Operating Exp. - Transportation Cost - Stock Variation - Other expenses not related to lifting) / Production Volume (Operating Exp. + Exploration Exp. + G&A + Royalties + Finance Cost) / Sales Volume (Operating Exp. + Exploration Exp. + G&A + Royalties + Finance Cost + DD&A) / Sales Volume (Sales + Revenue from pipeline transportation) - (Operating expenses + Exploration expenses + Administrative expenses + Petroleum royalties and remuneration + Management's remuneration) EBITDA / Sales Revenue Trailing-12-month net income/Average assets between the beginning and the end of the 12-month period Trailing-12-month net income / Average shareholders' equity between the beginning and the end of the 12-month period Short-term loans from financial institution + Current portion of long-term debts + Bonds + Long-term loans from financial institution Total debt-Liquidity Total debt/ Shareholders' equity Net debt / Shareholders' equity Total debt / (Total debt + Shareholders' equity) Total debt / Trailing-12-month EBITDA Net debt / Trailing-12-month EBITDA Trailing-12-month EBITDA / Trailing-12-month Interest Expenses & Amortization of Bond Issuing Cost 44 PTTEP#45Conversion Table Crude Oil To Convert Tonnes (metric) Kiloliters Barrels US Gallons Tonnes/year From Multiply by Tonnes (metric) 1 1.165 7.33 307.86 Kilolitres 0.8581 1 6.2898 264.17 Barrels 1.1364 0.159 1 42 US Gallons Barrels/day 0.00325 0.0038 0.0235 1 49.8 Natural Gas and LNG To Convert Billion cubic meters NG Billion cubit feet NG Million tonnes oil Million tonnes Trillion BTU MBOE equivalent LNG From Multiply by 1 billion cubic metres NG 1 35.315 0.86 0.735 34.121 5.883 1 billion cubic feet NG 0.028 1 0.024 0.021 0.966 0.167 1 million tonnes oil equivalent 1.163 41.071 1 0.855 39.683 6.842 1 million tonnes LNG 1.36 48.028 1.169 1 46.405 8.001 1 trillion BTU 0.029 1.035 0.025 0.022 1 0.172 1 MBOE 0.17 6.003 0.146 0.125 58 1 45 PTTEP