Private company

Posiva

Posiva Oy is a Finnish company with headquarters in the municipality of Eurajoki, Finland. It was founded in 1995 by Teollisuuden Voima (60% of stock) and Fortum (40% of stock), two Finnish nuclear plant operators, for researching and creating a method of final disposal of spent nuclear fuel from their plants. For this purpose, Posiva is currently constructing the Onkalo spent nuclear fuel repository, the world's first deep geological repository, at the Olkiluoto Nuclear Power Plant site.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

1995Founded1
  • Industryenergy industry1
  • HeadquartersOlkiluoto1
  • Websitewww.posiva.fi/en
  • Legal formosakeyhtiö1
  • LEI7437005FPH5TV5UAKK793
  • StatusActive3
  • LEI statusIssued and current3
  • Registered addressOlkiluoto, FI-27160 Eurajoki, Finland3
  • Registered withFinnish Patent and Registration Office, 1029258-83

Posiva Oy is a Finnish company with headquarters in the municipality of Eurajoki, Finland. It was founded in 1995 by Teollisuuden Voima (60% of stock) and Fortum (40% of stock), two Finnish nuclear plant operators, for researching and creating a method of final disposal of spent nuclear fuel from their plants.2

Products and brands

  • high-level radioactive waste management

Listed on Wikidata.1

Subsidiaries and ownership

Owners

From Wikidata.1

Timeline

  1. 1995Founded Founded1

Sources

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

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  2. 2
  3. 3