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Karmøy Primary Production

In Karmøy, Hydro operates different plants connected to the aluminium value chain. This includes producing primary aluminium, refining it into various products and distributing them.

Employee looking at electrolysis hall

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  • Number of employees: 500
  • Began production: 1967
  • Production: 270 000 tonnes of primary aluminium and 194 000 tonnes of casthouse products annually
  • Products/specialties: Primary aluminium, casthouse products, research and development

Our largest facility in Karmøy is the plant producing primary aluminium, or liquid aluminium. The plant is one of Europe's largest integrated aluminium plants, and its energy supply comes from our hydropower plants in Røldal and Suldal.

There are three casthouses at Karmøy: one delivering extrusion ingot for profile production, another producing wire rod for high-voltage cables, and a sheet casthouse producing plates for the rolling mill. We also have a research and development center at the plant that focuses mainly on improving the production process.


NS-EN ISO 14001:2004 environmental management standard
ISO 9001:2008 quality management standard
OHSAS 18001:2007 occupational health and safety standard
ISO 50001 energy management system standard


Karmøy Primary Production

Hydrovegen 160

N-4265 Håvik


+47 52 85 40 00