Investor Presentaiton

Towards the Achievement of GHG Reduction Targets (New Scope 3 Indicator) ✓ Aiming to reduce emission throughout the supply chain through business transformation ✓ A new indicator "carbon intensity" will be used to set targets and promote further initiatives [Formula] Carbon Intensity CO2 emissions (Scope1+2+3)*1 Volume of energy supplied [Target - vs. 2020] 2030: -10% 2040: -50% Base Carbon Intensity 0 2020 (Base Year) 10% ▲ 50% (Rising temperature)*1 [Social Implementation Themes and Expected Business Size] Theme Units 2030 2040 0000 (≤2.6°C) Hydrogen/ammonia 100 400 tons 0000 SAF/biofuel/synthetic fuel 50 250 KL Mixing non-fossil fuels (≤2.0°C) into gasoline*2 % 10°2 20 Idemitsu Green Energy Pellet 0000 300 300- tons (≤1.5°C) 0000 Planting, CCS, etc. 100 700 2025 2030 2035 2040 2045 2050 tons idemitsu *1: The area graph above shows degree of low carbon society based on IEA's scenario(company estimate) *2: Anticipating mixture limited to premium unleaded gasoline in 2030 *To be revised as needed based on progress in investment screening for business structure reforms, etc. Copyright Idemitsu Kosan Co., Ltd. All Rights Reserved. 9

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