Transurban FY26 Corporate Report Appendices
Appendix 1 Approach to climate-related target setting
The Group’s FY30 GHG emissions reduction targets were established in line with international practices, using the SBTi as a methodological reference. Specifically, the tool used to calculate the percentage reduction needed for the scenario of keeping global warming “well below 2°C,” compared to pre-industrial levels, was the “Science-Based Target-Setting Tool – Version 1.1”. The following methods, made available by SBTi, were used for each target: • Scope 1 and 2: Absolute Contraction Approach • Scope 3, Category 1: Physical Intensity • Scope 3, Category 2: Economic Intensity For the Group’s FY50 GHG emissions target, Transurban established its long-term target to contribute to achieving net zero global emissions as informed by the ambition of the 2015 Paris Agreement to hold the increase in global average temperature to “well below 2°C” and pursue efforts to limit the temperature increase to 1.5°C above pre-industrial levels. Transurban’s FY50 target was prepared in accordance with SBTi net zero methodology (v1.0) and includes all relevant Scope 1, 2 and 3 GHG emissions as per Transurban’s published GHG inventory. Specifically, Transurban used SBTI’s Net- Zero Tool – Version 1.0.3 and applied the “Absolute contraction” approach, reflecting a 90% absolute reduction across Scope 1, 2 and 3 GHG emissions.
The target-setting process considered the principles and criteria of the GHG Protocol Corporate Accounting and Reporting Standard and SBTi Science-Based Target Setting Manual, applicable to Scope 1, 2, and 3, as follows: • Scope 1 – Direct emissions: Scope 1 targets were determined by considering only direct emissions from sources controlled by Transurban. • Scope 2 – Indirect emissions from the generation of purchased or acquired electricity consumed by Transurban: Scope 2 targets were defined based on SBTi criteria, adopting the market-based approach, in line with the Group’s strategy of sourcing electricity from renewable sources. • Scope 3 – All other indirect GHG emissions that are a consequence of Group activities, but occur from sources not owned or controlled by the Group: Transurban’s Scope 3 emissions comprise more than 40% of total Scope 1, 2 and 3 emissions, and Scope 3 targets cover at least 2/3 of total Scope 3 emissions in conformance with the GHG Protocol Corporate Value Chain (Scope 3) Accounting and Reporting Standard. In accordance with the GHG Protocol, Transurban does not report customer emissions under the optional indirect use- phase boundary (Scope 3, Category 11). 3. Emission Factors: appropriate emission factors are applied to convert activity data into emissions. These factors are sourced from recognised databases and guidelines, such as the Clean Energy Regulator in Australia and the Environmental Protection Agency in the United States, and are updated annually. Refer to specific emissions calculation methodologies below. 4. Calculation and Reporting: Emissions are calculated using standardised methodologies consistent with the GHG Protocol. The calculation methodology applied to Transurban activities for the determination of related GHG emissions are detailed below. There were no changes in the measurement approach in the current period. The Group has adopted a greenhouse gas emissions measurement approach aligned with the Greenhouse Gas Protocol standards and, where applicable, NGER requirements. These frameworks were selected because they provide recognised methodologies for setting organisational and operational boundaries and for measuring and reporting greenhouse gas emissions, supporting completeness, consistency, comparability and reliability in emissions reporting. The Group's inputs and assumptions reflect the best available information at the reporting date and are considered appropriate having regard to the Group's operations, reporting boundaries and available data.
Appendix 2 Measuring climate-related metrics and GHG emissions activities Approach to measuring GHG emissions
Transurban uses the GHG Protocol convened by the World Resources Institute and the World Business Council for Sustainable Development to determine its Scope 1, 2 and 3 emissions sources, as defined by the Corporate Accounting and Reporting Standard. Transurban measures its GHG emissions in accordance with the GHG Protocol. For Australian assets and operations, Scope 1 and 2 emissions are measured and reported under the NGER Scheme. While biogenic emissions are considered relevant to the Group's operations in certain circumstances, such as major project delivery, these emissions have not been quantified and disclosed in FY26. 1 The Group’s emissions measurement approach includes the following key steps and remains consistent with prior year: 1. Scope definition: emissions sources are classified into Scope 1, 2 and 3 in line with the GHG Protocol. 2. Data collection: activity data is collected for energy use, fuel consumption, waste generation, and other relevant activities.
1 The Group has applied the approach contemplated by the March 2026 interpretation of the Transition Implementation Group on IFRS S1 and IFRS S2 (TIG) regarding biogenic emissions, allowing reasonable time to establish appropriate data collection, measurement and estimation processes. The Group expects these processes to be operational during FY27 and intends to provide disclosures on the applicability of biogenic emissions in future reporting periods
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