30 September 2021 and 2020 are presented below: Q3-2020 Q2-2021 Q3-2021 9M-2020 9M-2021 Change THB Mn THB Mn THB Mn %QoQ %YoY THB Mn THB Mn %YoY Fuel materials cost 515.9 583.3 643.3 10.3% 24.7

and service for the year ended 31 December 2021 and 2020 are presented below: Q1-2021 Q2-2021 Q3-2021 Q4-2021 2020 2021 THB Mn THB Mn THB Mn THB Mn THB Mn % THB Mn THB Mn THB Mn % Fuel materials cost

%YoY Fuel materials cost 583.3 808.1 811.4 0.4% 39.1% 1,119.8 1,619.5 44.6% Depreciation and amortisation cost 155.4 165.8 169.1 2.0% 8.8% 307.9 334.9 8.8% Staff cost, repair and maintenance cost and

Mn THB Mn THB Mn %QoQ %YoY THB Mn THB Mn %YoY Fuel materials cost 643.3 811.4 987.0 21.6% 53.4% 1,763.1 2,606.5 47.8% Depreciation and amortisation cost 154.0 169.1 169.3 0.1% 9.9% 461.9 504.2 9.2

of sales and service THB Mn THB Mn THB Mn THB Mn THB Mn % THB Mn THB Mn THB Mn % Fuel materials cost 808.1 811.4 987.0 1,001.8 14.8 1.5% 2,485.6 3,608.3 1,122.7 45.2% Depreciation and amortisation cost

and 2022 are presented below: Cost of sales and service Q3-2022 Q2-2023 Q3-2023 Change 9M-2022 9M-2023 Change THB Mn THB Mn THB Mn %QoQ %YoY THB Mn THB Mn %YoY Fuel materials cost 987.0 808.3 777.3 (3.8

-2023 Q4-2023 Change QoQ 2022 2023 Change YoY THB Mn THB Mn THB Mn THB Mn THB Mn % THB Mn THB Mn THB Mn % Fuel materials cost 905.5 808.3 777.3 779.5 2.2 0.3% 3,608.3 3,270.6 (337.7) (9.4%) Depreciation

Baht 110.9 million. Cost of sales and service Quarter 2 Quarter 1 Quarter 2 Change 6-month 6-month Change (Unit: THB Mn) 2023 2024 2024 %QoQ %YoY 2023 2024 %YoY Fuel materials cost 808.3 716.5 754.0 5.2

2024 %YoY Fuel materials cost 777.3 754.0 850.8 12.8% 9.5% 2,491.1 2,321.3 (6.8%) Depreciation and amortization cost 180.0 195.6 204.8 4.7% 13.8% 531.4 581.9 9.5% Staff cost, repair and maintenance and

collection tends to gradually increase within the first five years of an asset’s acquisition as the Company carry out preparation, negotiation and restructuring activities, and then accelerates in the recovery