Posiva Oy
Waste Treatment and DisposalSatakunta, Finland51-200 Employees
Posiva Oy is a specialist organisation responsible for the final disposal of spent nuclear fuel for its owners, operating within the waste treatment and disposal sector. Established in 1995 and based in Eurajoki, Satakunta, Finland, the company carries out the encapsulation and disposal work at its Olkiluoto site, supported by a network of collaborations with Finnish and international partners. Its operations are anchored by a joint ownership structure, with Teollisuuden Voima Oyj and Fortum Power & Heat Oy sharing the costs of managing nuclear waste. Posiva employs a workforce concentrated in its main office in Olkiluoto, its ONKALO project office, and a Helsinki office, reflecting its multi-location presence in Finland. A recent development includes continued expansion of facilities and ongoing construction activity related to used fuel management at Olkiluoto, underscoring its role in advancing spent fuel handling and disposal projects within the region.