Annual Activity Report 2025

SUSTAINABILITY STATEMENT

Environmental information

Area of activity

Chronic phenomena (average temperature, drought, water resources, sea level, etc . )

Main adaptation levers

● Fuel cycle plants: decrease in water resources for the identi fi ed sites, chronic dif fi culties in discharging liquid effluents (long low-water levels in the Rhône), risk of the development of algae and micro-organisms (effluent discharge basins) ● Orano is very little affected by the increase in sea level by 2100, except for one of its sites ● The duration of periods of drought varies little, with episodes already experienced today, however the intensity is increasing ● The “forest fi re” hazard in Canada, already observed due to waves of drought and increasing in recent years, is not expected to worsen further ● Sites not affected by the risk of river and coastal flooding ● Increase in supply costs for certain suppliers identi fi ed as the most sensitive to climate conditions ● Deterioration of road transport conditions (increased hardship, additional costs, risk of overheating of machines, etc. ). Roads in Kazakhstan could exceed 40° C for 19 days per year compared to two days per year currently, according to RCP 8.5 in 2050

Plants

Increase in average temperatures, drought and decrease in water resources Deterioration of working conditions on sites

● Cooling capacity upgrade ● Working conditions adaptation ● Water footprint reduction program

Mining

Suppliers

Radioactive material flows

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Transition risk The transition to a low-carbon economy involves vast political, legal, and technological changes, as well as in the functioning of energy markets in order to limit the effects of climate change on human activities. Depending on the nature, speed, and direction of the decisions, the impacts of the transition represent short- and medium-long-term challenges, sometimes risks, but primarily opportunities that Orano must anticipate. Generally speaking, the effects of climate change are an opportunity to decarbonize energy, and therefore for Orano because of its activities. The contribution of Orano’s activities to a low-carbon world is reflected in the historical choice of its strategic priorities,

one of whose pillars is Climate. This commitment is reflected today in its Corporate purpose, and concretely in the investments in Research and Development and in innovation dedicated to decarbonization and resource-saving technologies. The categories of transition risks and opportunities presented below are based on the framework proposed by the TCFD (Task Force on Climate-Related Financial Disclosures), which de fi nes major families of climate risks and opportunities. This analysis, updated in 2025, fed into the identi fi cation and rating of climate change-related IROs.

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Orano - Annual Activity Report 2025