Posiva Oy
Posiva Oy is a FIN company active in the nuclear fuel chain as repository.
Owned by TVO and Fortum, and the organisation that got further than anyone else: Onkalo is the first deep geological repository for spent fuel anywhere to be built. Construction is complete and the encapsulation plant has been tested with dummy fuel, pending an operating licence.
Company
| Headquarters | Eurajoki, Finland |
|---|---|
| Founded | not recorded |
| Ownership | private |
| Roles in the chain | repository |
Position in the chain
Facilities
| Facility | Stage | Country | Capacity / output | Status |
|---|---|---|---|---|
| Onkalo | repository | FIN | not disclosed | construction |
Sources
- Posiva Oy — company source
- Global Nuclear Power Tracker, Global Energy Monitor, August 2026 release — CC BY 4.0 · retrieved 2026-09-06