Financial Results for Nine Months Ended December 31, 2023

Appendix 6. Business Overview ② I/U Field - Gas Supply Features of JAPEX's domestic gas supply network High-pressure gas pipeline network over 800 km total 2 LNG terminals for ocean-going carriers Capable to supply from Sea of Japan and Pacific Ocean Domestic gas supply Domestic produced gas and regasified LNG supply via pipelines Receive, storage, regasify, and deliver LNG LNG satellite system: tank trucks, domestic vessels Third-party or consignment use of our gas pipelines and LNG terminals etc. Respond to diversification of domestic gas supply Support fuel switching to natural gas from other fossil fuels Propose and provide energy services in cooperation with city gas suppliers • LNG procurement Procure competitive LNG with a combination of term and spot contracts Overseas LNG supply infrastructure LNG Receiving Terminal Hokkaido Gas Co., Ltd. Ishikari LNG Base Coastal vessel LNG tank truck Kitahiroshima Chitose Tomakomai Akita Yurihonjo LNG tank truck Yamagata LNG from overseas Shindigh LNG Receiving Terminal NIHONKAI LNG CO., LTD. Niigata Terminal Launch new projects or other process mainly in Southeast Asia with stronger demands for gas ✓ Ongoing feasibility study: Northern Vietnam LNG terminal project LNG tank truck Niigata-Sendai Gas Pipeline LNG tank truck Fukushima Ulonuma LNG tank truck Korty ama LNG tank truck LNG tank truck JAPEX LNG tank truck Yufutsu LNG Plant/ Yufutsu LNG Receiving Terminal Coastal vessel On Field/Gas Field/oil and Gas Field LNG Terminal Power Plant Natural gas ppeme LNG tank truck LNG Ocean-going LNG Carriers -LNG Costal vessal *Cities on the los are supply destasations Sendal wanuma Soma-wanuma Gas Pipeline Coastal vessel Soma LNG Terminal LNG from overseas Fukushima Natural Gas Power Plant Shiroishi-Koriyama Gas Pipeline Copyright 2024 Japan Petroleum Exploration Co., Ltd. (JAPEX) All Rights Reserved. 31

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