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Karmøy Primary Production

At Karmøy, Hydro produces primary aluminium. We also have two casthouses at Karmøy.

Employee looking at electrolysis hall

Did you know?

  • Number of employees: 520
  • Began production: 1967
  • Production: 270 000 tonnes of primary aluminium and 220 000 tonnes of casthouse products annually
  • Products/specialties: Primary aluminium, casthouse products, research and development

Hydro produces primary aluminium, or liquid aluminium, at Karmøy. Karmøy is one of Europe's largest primary aluminium plants and its energy supply comes from our hydropower plants in Røldal and Suldal.

There are two casthouses at Karmøy: one delivering extrusion ingot for profile production and one producing wire rod for high-voltage cables.

We also have a research and development center at the plant that focuses mainly on improving the production process.


Quality management: 9001:2015
Environmental management: ISO 14001:2015
Energy management system: ISO 50001:2018
Occupational health and safety: ISO 45001:2018 (former Ohsas 18001)
Automotive standard: IATF 16949:2016
Sustainability/CSR: ASI Performance standard                 


Karmøy Primary Production

Hydrovegen 160

N-4265 Håvik


+47 52 85 40 00