Investor Presentaiton

Decarbonization ambition: Alunorte is 1st quartile in CO₂e with a clear plan to 1st decile by 2025 CO2e per ton of Alumina (scope 1 and 2) CRU Global Alumina 2022 Source: CRU, Hydro Alunorte today Fuel Switch Electrical boilers 1st quartile on CO₂e (0.65t CO2e) 46% below the industry average • • Alunorte 2022 Alunorte by 2025 1st decile on CO₂e Reduce 25%, 0.45t CO₂e by 2025 63% below the industry average Hydro 2022 Industry avg: 1.20 Alunorte 0.65 2022 0.45 2025 76

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