2 9 | T M X G R O U P S U S TA I N A B I L I T Y R E P O R T 2 0 2 4 Appendix C: Our Emissions Data REPORT CONTENTS ABOUT THIS REPORT SUSTAINABILITY STRATEGY SUSTAINABILITY GOVERNANCE PROSPERITY PLANET PEOPLE APPENDICES INVENTORY CATEGORY ACTIVITY (TCO2E) 2024 202319 % VARIATION METHODOLOGY CHANGES FROM 2023 INVENTORY Scope 1 Stationary Combustion 50 55 -9% Emission factors and reference values were revised in conformity with datasets maintained by government agencies Reclassification of GHG emissions from Scope 1 to Scope 2 to align with the GHG Protocol’s operational control approach, and Scope 2 guidance. Reclassification of GHG emissions from Scope 3 to Scope 2 to account for structural changes in our organizational boundaries Calculation of market-base Scope 2 emissions inclusive of renewable energy certificates deduction Scope 2 (Location-Based) Electricity 20 1,704 1,828 -7% Scope 2 (Market-Based)21 Electricity 1,689 1,828 -8% Scope 322 Cat. 1 - Purchased Goods & Services23 3,754 1,642 129% Emission factors and reference values were revised in conformity with datasets maintained by government agencies Data collection and ongoing process improvements enabled access to expanded datasets Use of supplier-provided emissions data for cloud services Spend-based data was adjusted to inflation Cat. 2 - Capital Goods23 652 630 4% Cat. 3 - Fuel and Energy Related Activities 259 271 -5% Inclusion of fuel value chain 19 FY2023, Scope 1, 2 and 3 GHG emissions were recalculated due to structural changes following acquisitions, updates in data management and methodology, including revised emission factors, supplier data, and fuel value chain inclusion. This resulted in a 279 tCO2e increase for 2023 Scope 1 & 2 emissions, and a 1021 tCO2e decrease for Scope 3. Intensity values were recalculated. Historical data beyond 2023 has not been recalculated. 20 The GHG Protocol requires organizations to quantify emissions from the generation of acquired and consumed electricity, steam, heat, or cooling (collectively referred to as “electricity”). 21 Scope 2 accounting uses both the location-based method calculating emissions based on the average emissions intensity of the grids where energy is consumed (primarily using grid-average data) and the market-based method reflecting emissions from a company’s specific electricity choices through contractual instruments like renewable energy certificates. 22 Category 4, 10, 11, 12, 14 were not included because they are not applicable to TMX’s upstream or downstream activities or are included in other categories. 23 Based on third-party estimates using available spend data. Our planned refinements to this methodology is expected to result in increases upon disclosure of the revised calculations.
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