Aluminum productionAluminum production emits ~270 Mt CO2/year, according to the International Energy Agency, and is considered a key enabling material for the energy transition. DecarbonizationDecarbonization of aluminum productionAluminum production is therefore critical, not only for the aluminumAluminum sector but also for sectors such as automotiveAutomotive, building and construction, and the energy sector. Hydro is working to qualify hydrogenHydrogen as a fuel for aluminum meltingAluminum melting furnacesFurnace, using a systematic and risk-based technology qualificationTechnology qualification framework. The qualification activities seek to reduce risk and increase confidence related to its suitability. In June 2023, Norsk Hydro (Hydro), and Fives North American Combustion (Fives) performed a series of experimental tests in Hydro’s extrusionExtrusion casthouseCasthouse in Navarra, Spain, as part of the qualification program. Using hydrogenHydrogen to melt ~200 tons of primary aluminumAluminum and process scrap, Hydro and Fives has developed a significant scientific basis for further development in this area. The tests focused on safetySafety performance, metalMetals quality, energy efficiencyEnergy efficiency, production capacity, emissionsEmissions, and operational effects. The technology readiness level of hydrogenHydrogen used as fuel in aluminum meltingAluminum melting furnacesFurnace is defined as 7.