Investor Update April 2022

Newly Thailand Power Development Plan Stronger demand of NG for power plants PDP 2015* Natural Gas growth upon Government fuel diversification policy for power generation Unit: GWh 350,000 300,000 250,000 200,000 7% 3% 6% 150,000 PDP 2018 Rev.1** Natural Gas be the most important source of energy with highest portion among other fuels Unit: GWh Energy Efficiency 6% 350,000 1% Renewable 19% 18% 300,000 15% Domestic 2% 2% Hydro 2% 16% 250,000 15% 2% 8% 12% 10% Import 9% 2% Hydro 13% 10% 2% 200,000 8% 3% 7% 11% 53% 64% Natural Gas 37% 150,000 510 64% 100,000 50,000 0 10% 10% 2015 2016 *Source: Ministry of Energy 2017 2018 2019 2020 2021 2022 2023 16% 2024 2025 7% 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 62% 60% 55% 100,000 50,000 17% 9% 8% 11% 6% 13% 5% 0 2018 2019 2020 2021 2022 2023 2024 2025 ** Source EPPO (Public Hearing presentation) 2% 6% 7% 8% 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 Import 5% Coal 6% Lignite 2037 ptt 49

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