Article · Wikipedia archive · Last revised Aug 2, 2026

Posiva

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

Last revised
Aug 2, 2026
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≈ 1 min
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Wikipedia ↗
Posiva
TypeOy
IndustryEnergy
Founded1995 (1995)
HeadquartersEurajoki, Finland
ProductsNuclear waste management
OwnerTeollisuuden Voima and Fortum
Websitewww.posiva.fi/en/

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),1 two Finnish nuclear plant operators, for researching and creating a method of final disposal of spent nuclear fuel from their plants.234

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.

References

References

  1. Posiva's website
  2. "Nuclear waste tomb soon to reach final depth". Helsingin Sanomat. 10 May 2010. Retrieved 12 August 2012.
  3. "Approval for expanded Olkiluoto repository". World Nuclear News. 4 June 2009. Retrieved 12 August 2012.
  4. "Finnish nuclear waste may rest in peace". This Is Finland. September 2011. Retrieved 12 August 2012.