Company: RTNTF
Filing Date: 2025-02-20
Form Type: 20-F
Source: 0001628280-25-006642
Chunk: 142

Company: RIO TINTO LTD
Filing Date: 2025-02-20
Form: 20-F
Chunk 142
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 measures, QAL is currently prevented from tolling for Rusal and Rio Tinto is currently utilising 100% of the tolling capacity at QAL. Our 2024 equity emissions and our 2018 baseline include QAL emissions on the basis of Rio Tinto’s 80% ownership. In 2024, the additional emissions associated with Rio Tinto’s additional tolling capacity were 0.8Mt. 1. Scope 1: Emission factors are consistent with the most applicable national or regional reporting guidance or schemes. For emissions not covered by government reporting, factors from the Intergovernmental Panel on Climate Change (IPCC) Guidelines for National Greenhouse Gas Inventories are used. A full list of references is included in the 2024 Scope 1, 2 and 3 Emissions Calculation and Climate Methodology report. In 2024 as part of the implementation of a new GHG reporting tool, the Scope 1 factors for all sites were re-visited. Some adjustments were made to provide greater alignment with government reporting and regional factors. 2. Scope 2: Market-based method counts commercial decisions to purchase the unique rights to renewable energy as zero emissions and applies a residual mix factor (or similar) to the remaining MWh purchased. The residual mix factor is typically equivalent to the grid intensity with renewable attributes that have been sold removed from the factor. Scope 2 emission factors are consistent with the Australian National Greenhouse and Energy Reporting Measurement Determination 2008 for Australian operations location-based reporting. For non-Australian operations, where possible, factors are sourced from public grid level data or electricity retailers. For market-based reporting, Scope 2 includes the use of renewable electricity certificates (RECs) and all contracts where we have the exclusive rights to the renewable energy attributes. Market-based emissions reported as zero include Oyu Tolgoi, ISAL aluminium, Resolution Copper, Weipa, Richards Bay Minerals and Kennecott Copper with surrendered RECs. Escondida and QMM have renewable energy PPA contracts with energy attributes. 3. Carbon credits used towards our 2024 net emissions calculation include Australian Carbon Credit Units (ACCUs) that were retired for compliance for the period 1 January to 30 June 2024 (retired) plus a projection of the number of ACCUs we expect to retire for the period 1 July to 31 December 2024 (planned). This projection is based on our Scope 1 emissions for the period 1 July -