Annual Activity Report 2025

SUSTAINABILITY STATEMENT

Environmental information

RESULTS IN TERMS OF LIABILITIES MANAGEMENT AND SITES’ END-OF-LIFE [E2-6]

Reference

Objective 2030

2025

Indicators

CSRD

2024

2023

2019 Progress

Operational expenses (OpEx) related to major environmental pollution incidents (in millions of euros) Capital expenditure (CapEx) related to major environmental pollution incidents (in millions of euros)

E2-6 >40 b

0

0

0

n/a

Complete 2 emblematic remediation operations (deconstruction of the GB1 cooling towers at Orano Tricastin and end of the cleanup of the Parc aux Ajoncs (PAA) at Orano la Hague)

E2-6 >40 b

0

0

0

n/a

Provisions for environmental protection and clean-up costs (in millions of euros) Progress on 2 emblematic remediation operations

E2-6 >40 c

9,226 9,342 9,315

n/a

80% for cooling

(deconstruction of the GB1 cooling towers at Orano Tricastin and end of the cleanup of the Parc aux Ajoncs (PAA) at Orano la Hague) (%)

towers 15% on Parc aux Ajoncs (PAA)

Entity speci fi c Entity speci fi c

n/a

n/a

n/a

Number of ISO 14001 certi fi ed sites

17

18

17

n/o

n/a: not applicable, n/o: not obtainable. The cost-related indicators from the CSRD directive are required from fi nancial year 2024. Methodological clarification: Orano de fi nes a major environmental pollution incident as a level 4 or 5 event on its internal ASSESS scale (see Section 4.3.3). The group has not suffered any to date. Provisions for environmental protection and clean-up costs include end-of-lifecycle provisions falling within the scope of the law and the provisions for the remediation of mining sites described in Section 4.2.4.4.

4

4.2.4.4 Financial effects related to liabilities management and sites’ end-of-life

Very restricted fi nancing of decommissioning of regulated nuclear facilities and highly regulated waste recovery facilities Article 20 of French law No. 2006-739 of June 28, 2006, on the program for the sustainable management of radioactive materials and waste establishes the principle of the creation, by the operators of regulated nuclear facilities (INB), of assets earmarked to cover the costs of decommissioning their facilities and managing the back end of the fuel cycle, in accordance with terms and conditions guaranteeing the availability of the necessary resources. The law provides for a mechanism to ensure that INB operators have the assets necessary to fi nance the long-term expenses related to the decommissioning of these facilities, the management of spent fuel, and radioactive waste.

In accordance with Article L. 594-4 of the French Environmental Code, Orano prepares a report every three years on future expenses for the decommissioning of regulated nuclear facilities and legacy waste retrieval and casking, and long-term management of radioactive waste casks. This report was updated in June 2025. At December 31, 2024, the group’s gross undiscounted future expenses amounted to 16,992 million euros, of which 82 million euros is borne by third parties. The obligations of the la Hague facility represent more than 80% of these end-of-lifecycle expenses. The amount of provisions falling within the scope of the law at December 31, 2024, was 8,708 million euros in present value, including 70 million euros fi nanced by third parties (Note 13 to the consolidated fi nancial statements).

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Orano - Annual Activity Report 2025