Orano - Annual Activity Report 2025 163 SUSTAINABILITY STATEMENT 4 Environmental information Indicators ESRS 2025 2024 2023 Reference 2019 Change vs. n-1 Change vs. Reference 2019 Location-based scopes 1, 2 and scope 3 GHG emissions (tCO2e) E1-6 >44, 52a 1,726,331 1,674,707 1,472,091 1,485,192 3% 16% Market-based scopes 1, 2 and scope 3 GHG emissions (tCO2e) E1-6 >44, 52b 1,651,336 1,630,209 1,472,091 1,485,192 1% 11% Methodological clarification: The carbon footprint of scopes 1, 2 and 3 complies with the GHG protocol method. In 2023, Orano introduced a market-based scope 2 setting the group’s reduction targets. The group includes in its scope 1 the emissions associated with the change in land use (called emissions from biomass (soils and forests), in accordance with the ADEME BEGES v5 methodology of July 2022. The gases taken into account are as follows: CO2, CH4, N2O, and halogen compounds (CFC, HCFC, HFC, PFC, SF6, NF3). The GWPs used are those of the IPCC AR6. All conversion and emission factors used in the consolidation are reviewed each year on the basis of updates to benchmark databases and updated when significant changes are observed. In accordance with the scope of consolidation, the emissions of the McClean JV are 100% integrated. The emissions of the Canadian JVs operated by Cameco are included in scope 3 – purchases of goods and services in proportion to the percentage of financial consolidation. The Uzbek subsidiary Nurlikum was recognized until the end of September 2025, the date when control was lost. As part of the loss of operational control of its Nigerien subsidiary, Somaïr, noted in December 2024 and deconsolidation of the financial statements, the group restated its entire history to remove this subsidiary from past emissions, including those for the reference year, since Orano’s loss of control and subsequent expropriation (1) by the Nigerien government did not end the mine’s activities. The group has retained in its historical records the emissions of its subsidiary Cominak, whose operational activities ceased in 2021, prior to the loss of control and its deconsolidation by the group. Scope 1: • The databases used are: the ADEME carbon database v23.8 available in October 2025 (France), fuel emission factors provided by CITEPA. • The GWP of the refrigerants used by Orano are those supplied by the AR6. When the data is not obtainable, they are calculated on the basis of the Safety Data Sheets provided by the suppliers. Scope 2: • The databases used are: ADEME carbon database v23 (France), “IEA Emissions Factors” 2024 database, National Inventory Report Greenhouse Gas Sources and Sinks in Canada: 1990-2017. Environment Canada. Online: https://unfccc.int/documents/194925 and Emissions Factors and Reference Values – Version 3.0 – October 2025 – En84-294-2025-eng.pdf. • The values for the year are estimated using the emission factor of the previous year (factor 2024 for the year 2025). Emissions from the previous year are updated on the basis of the actual factor recorded on the network and published in the databases. It is used to calculate the “combustion” share of the average electricity mix emission factor. • For scope 2 market-based, Orano records the renewable energy certificates acquired and activated for the year. Their place of production is linked to the country of consumption (Kazakhstan, Canada). Scope 3: • Orano calculates a full scope 3 each year. The “franchises” and “leasing” items are irrelevant for Orano. • The databases used: ADEME database v16 and v23.8 available in October 2025 (France), “IEA Emissions Factors” database for 2024, Ecoinvent 3.6, 3.9 and 3.11 databases, supplier emission factors, Life Cycle Analysis of the French nuclear kWh (source: EDF). Purchase of goods and services and capital goods: the data come from the physical activity data entered by the sites or the corporate departments for the data: chemical products, metals, gas, plastic materials, IT, construction, materials, and equipment. When the physical data is not available, the consolidated OpEx and CapEx monetary data provided by the Supply Chain Department are used. Global monetary data are processed in this way to avoid double counting between physical and monetary data. When there is any doubt, a conservative approach is adopted to the risk of double counting. Ad hoc emission factors in tCO2e by activity data are applied for physical data, whereas monetary ratios in tCO2e per thousand euros spent are used for monetary data. Monetary ratios were significantly updated in 2025 based on the update made by ADEME in v23.8, released in October 2025, on data since 2019. They have also been revised to include monetary emission factors provided by the group’s service providers in five purchasing segments representing 19% of external orders. Expenses identified as OpEx are included in the “Purchase of goods and services” category, and the CapEx-type expenses are included in the “Capital goods” category. Monetary data correspond to amounts committed to service providers outside the group. The “Purchases of goods and services” item also contains emissions from other scope 3 items such as transport when reallocation to another category (upstream transport or downstream transport) is not easily achievable. According to the method used by the group and described in the scope consolidation, the item “Purchases of goods and services” also includes scopes 1 and 2 emissions from Orano in the Canadian joint ventures (McArthur, Key Lake and Cigar Lake) insofar as these equity interests give Orano access to uranium materials which the group sells to its customers in the same way as its production. This item also includes an estimate of the upstream scope 3 associated with these investments (and ultimately with the acquired production) based on an Orano scope 3/scopes 1 and 2 ratio. (1) For more information on the situation in Niger, Section 2.1.2.1 Mining.
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