Private company

Hydro Aluminium

Defunct Norwegian state owned company

Årdal og Sunndal Verk or ÅSV is a defunct Norwegian state owned company that operated the aluminium plants in Årdal Municipality, Sunndal Municipality, Høyanger Municipality and Holmestrand Municipality. The company was established to take advantage of the hydro-electric power plants in the respective municipalities to create aluminium plants. The company was founded in 1947 to continue the unfinished production of the Årdal plant started by the German occupational forces during World War II.2 It employed 3,985 people in 2026.1 It is part of Speira.1 Wikipedia text CC BY-SA 4.0

Last updated Oct 20, 2026.

Overview

Jan 28, 1947Founded1
  • Industrymetal industry1
  • HeadquartersOslo1
  • Websitewww.hydro.com/no-NO
  • Legal formaksjeselskap1
  • LEI5493000Q2TIZWJ1407483
  • StatusActive3
  • LEI statusIssued and current3
  • Registered addressDrammensveien 264, 0283 Oslo, Norway3
  • Registered withThe Brønnøysund Register Centre, 917 537 5343

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Årdal og Sunndal Verk or ÅSV is a defunct Norwegian state owned company that operated the aluminium plants in Årdal Municipality, Sunndal Municipality, Høyanger Municipality and Holmestrand Municipality. The company was established to take advantage of the hydro-electric power plants in the respective municipalities to create aluminium plants. The company was founded in 1947 to continue the unfinished production of the Årdal plant started by the German occupational forces during World War II. In 1954 construction on the Sunndal plant started. The company was merged with Norsk Hydro in 1986 to create the light metal division Hydro Aluminium.2

Corporate structure

Hydro Aluminium is part of a group headed by Norsk Hydro. 79 entities, 31 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

  • Norsk Hydro Oslo, Norway
    • Hydro Aluminium Oslo, Norway
      • Slovalco Žiar nad Hronom, Slovakia
      • ALUMETAL SPOLKA AKCYJNA (ALUMETAL SPÓŁKA AKCYJNA) Subsidiary · Kęty, Poland
        • T+S SPOLKA Z OGRANICZONA ODPOWIEDZIALNOSCIA (T+S SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ) Subsidiary · Kęty, Poland
      • HYDRO ALUMINIUM CLERVAUX S.A. Subsidiary · Clervaux, Luxembourg
      • HYDRO ALUMINIUM DEESIDE LIMITED Subsidiary · Wrexham, United Kingdom
      • Tyin power station Owned · Årdal Municipality, Norway
    • Hydro Energi Oslo, Norway
      • Hydro Transport Subsidiary · Notodden Municipality
      • HYDRO ENERGI INVEST AS Subsidiary · Oslo, Norway
      • HYDRO HAVRAND AS Subsidiary · Oslo, Norway
      • HYDRO REIN HOLDING AS Subsidiary · Oslo, Norway
        • HYDRO REIN AS Subsidiary · Oslo, Norway
    • Hydro Extruded Solutions Subsidiary · Oslo, Norway
      • Sapa AB Subsidiary · Stockholm
      • HAI EXTRUSION S.R.L. Subsidiary · Arad, Romania
      • Hydro Extruded Solutions AB Subsidiary · Finspång, Sweden
        • HYDRO ALUMINIUM EXTRUSION PORTUGAL HAEP, S.A. Subsidiary · Vila Nova De Gaia, Portugal
        • HYDRO BUILDING SYSTEMS ATESSA S.R.L. Subsidiary · Atessa, Italy
        • Hydro Building Systems Sweden AB Subsidiary · Vetlanda, Sweden
        • HYDRO EXTRUSION ITALY S.R.L. Subsidiary · Ornago, Italy
        • HYDRO EXTRUSION LICHTERVELDE Subsidiary · Lichtervelde, Belgium
        • Hydro Extrusion Sweden AB Subsidiary · Vetlanda, Sweden
        • Sapa Precision Tubing Pune Private Limited Subsidiary · Pune, India
      • SAPA BUILDEX ATESSA S.P.A. Subsidiary · Atessa, Italy
      • 海德鲁铝业（苏州）有限公司 Subsidiary · 苏州市, China
    • Hydro Vigelands Brug AS Subsidiary · Vennesla, Norway
    • Hydrovolt Subsidiary
    • Norsk Hydro Deutschland Subsidiary · Grevenbroich, Germany
    • Yara International Subsidiary · Oslo, Norway
      • Yara (Germany) Subsidiary · Dülmen, Germany
      • YARA ASIA PTE. LTD. Subsidiary · 100% · Singapore, Singapore
      • yara tertre sa/nv Subsidiary · 100% · Saint-Ghislain, Belgium
      • P.T. YARA INDONESIA Subsidiary · Jakarta Pusat, Indonesia
      • YARA (THAILAND) LIMITED (บริษัท ยารา (ประเทศไทย) จำกัด) Subsidiary · Ratchathewi, Thailand
      • YARA AFRICA FERTILIZER (PTY) LTD Subsidiary · Gauteng, South Africa
      • YARA ANIMAL NUTRITION SOUTH AFRICA (PTY) LTD Subsidiary · Umbogintwini, South Africa
      • YARA ARGENTINA SA Subsidiary · Buenos Aires, Argentina
      • YARA BRASIL FERTILIZANTES S.A. Subsidiary · Porto Alegre, Brazil
      • YARA CHILE FERTILIZANTES LIMITADA Subsidiary · Santiago, Chile
      • YARA COLOMBIA S.A. Subsidiary · Cartagena, Colombia
      • YARA FERTILISERS INDIA PRIVATE LIMITED Subsidiary · New Delhi, India
      • YARA FERTILIZERS PHILIPPINES INC. Subsidiary · Taguig City, Philippines
      • YARA GROWTH VENTURES AS Subsidiary · Oslo, Norway
      • YARA GUATEMALA, SOCIEDAD ANONIMA Subsidiary · Guatemala City, Guatemala
      • YARA NORGE AS Subsidiary · Oslo, Norway
      • YARA S.A. Subsidiary · Zaventem, Belgium
      • YARA SWITZERLAND LTD. Subsidiary · Genève, Switzerland
      • YARA VIETNAM CO. LTD (CÔNG TY TNHH YARA VIÊT NAM) Subsidiary · Ho Chi Minh City, Vietnam
    • INDUSTRIFORSIKRING AS Subsidiary · 100% · Oslo, Norway
    • Remi Claeys Aluminium Subsidiary · 100% · Lichtervelde, Belgium
    • De Norske Salpeterverker Subsidiary · Norway
    • EXTRUSION SERVICES Subsidiary · Luce, France
    • Hydro Aluminium Giesserei Rackwitz GmbH (Hydro Aluminium Gießerei Rackwitz GmbH) Subsidiary · Rackwitz, Germany
    • Hydro Aluminium High Purity GmbH Subsidiary · Grevenbroich, Germany
    • Hydro Aluminium International SA Subsidiary · Tolochenaz, Switzerland
    • Hydro Aluminium Recycling Deutschland GmbH Subsidiary · Dormagen, Germany
    • HYDRO ALUMINIUM UK LIMITED Subsidiary · Alfreton, United Kingdom
    • HYDRO BUILDING SYSTEMS FRANCE Subsidiary · Toulouse, France
    • Hydro Building Systems Switzerland AG Subsidiary · Mägenwil, Switzerland
    • HYDRO BUILDING SYSTEMS UK LIMITED Subsidiary · Tewkesbury, United Kingdom
    • HYDRO EXTRUSION ALBI (HEA) Subsidiary · Le Garric, France
    • HYDRO EXTRUSION CANADA, INC. Subsidiary · Ottawa, Ontario, Canada
    • Hydro Extrusion Deutschland GmbH Subsidiary · Achim, Germany
    • Hydro Extrusion Drunen B.V. Subsidiary · Drunen, Netherlands
    • HYDRO EXTRUSION LUCE/CHATEAUROUX Subsidiary · Luce, France
    • Hydro Extrusion Ludenscheid GmbH (Hydro Extrusion Lüdenscheid GmbH) Subsidiary · Lüdenscheid, Germany
    • and 12 more

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries, stakes and holdings from Wikidata (CC0). Each entity in the chart links to its source.

What it owns

What Hydro Aluminium reports owning in its annual reports to the SEC: buildings, land and equipment, real estate and locations, investments, intangible assets and inventory, at the end of its latest fiscal year and a year before.

Stakes and holdings (Wikidata)

  • Tyin power station

Things Wikidata records the company as owning, with the share when stated.1

Subsidiaries and ownership

Parent company

Also owns

  • Tyin power station

Former owners and parents

Subsidiaries (GLEIF)

From Wikidata.1 Ownership links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); each one cites its LEI record.

Employees over time

  • 20263,9851

Timeline

  1. Jun 1, 2021Acquired Acquired by Speira1
  2. Dec 27, 2017Parent Directly consolidated by Norsk Hydro3
  3. Sep 1, 1986Renamed Name changed to Hydro Aluminium AS1
  4. Sep 1, 1986Acquired Acquired by Norsk Hydro1
  5. 1951Renamed Name changed to AS Årdal og Sunndal Verk1
  6. Jan 28, 1947Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5