ENVIRONMENTAL ENVIRONMENTAL PROTECTION 20236 20226 2024 In 2024, our GHG emissions intensity and energy intensity was 11 tonnes of carbon dioxide equivalent (tCO2e)/$million revenue and 138 Gigajoules (GJ)/$million revenue. We continue to track intensity as a measure of our operational efficiency. Our GHG emissions account for as many GHGs as possible, including CO2, CH4, N2O, PFC5, HFC5, SF6 and NF3, and are presented in tCO2e for ease of year-on-year evaluation and peer comparison. Additionally, we take guidance from reputable sources for computation methodologies, conversion factors and calculation tools. Emissions in Singapore are verified according to ISO14064:2018 Greenhouse Gases standards in the year following the reporting year. Differences between reported and verified GHG emissions are disclosed in the following year’s sustainability report, if such differences are more than 1,000 tCO2e. Emission factors are derived from a variety of credible sources, including the Inter-governmental Panel of Climate Change’s Sixth Assessment Report, the United States Environmental Protection Agency, and the United Kingdom Department for Environment, Food & Rural Affairs’ and Greenhouse Gas Protocol emission factor databases. The Group is progressively expanding our Scope 3 inventory. We have developed standardised methodologies to calculate nine Scope 3 Categories – 1, 2, 4, 5, 6, 7, 8, 9 and 13.7 Additionally, we conducted an updated survey to calculate our Scope 3 Category 7 emissions from employee commuting. Moving forward, we will continue to enhance our data accuracy and look into the remaining six categories in phases. 1 Our 2022 and 2023 Scope 1 and 2 GHG emissions were restated due to our inclusion of TransCore. GHG emissions are 7% and 11% higher for 2022 and 2023 respectively than previously reported. Regarding our Scope 3 Category 6 emissions from business travel, our data refers to Singapore business units only and were calculated based on the Greenhouse Gas Protocol emission factors. 2 Direct GHG emissions from sources owned or controlled by the Group. 3 Indirect GHG emissions from the generation of purchased electricity consumed. 4 Indirect GHG emissions from business travel by air (Category 6) by Singapore business units 5 Indirect GHG emissions from employee commute (Category 7). 6 Our 2022 and 2023 direct and indirect energy were restated due to our inclusion of TransCore. 7 The Scope 3 categories mentioned are emissions from Purchased Goods and Services (Category 1), Capital Goods (Category 2), Upstream Transportation and Distribution (Category 4), Waste Generated in Operations (Category 5), Business Travel (Category 6), Employee Commuting (Category 7), Upstream Leased Assets (Category 8), Downstream Transportation and Distribution (Category 9) and Downstream Leased Assets (Category 13). Total Energy Consumed (‘000 GJ) GHG EMISSIONS & ENERGY – METRICS 2024 Electricity / Cooling 865 Heating 39 Direct Indirect 778 804 644 905 653 Total GHG Emissions Generated (‘000 tCO2e) 694 20231 20221 2024 Scope 12 Scope 23 Scope 3 Category 64 Scope 3 Category 75 45 45 26 7 30 9 73 78 45 77 28 12 Note: We do not consume steam. Indirect Energy Type Consumed (‘000 GJ) 30 ST ENGINEERING | SUSTAINABILITY REPORT 2024
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