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Implenia wins $123 million contract for Swedish nuclear waste site
24 June 2025
Swiss construction group Implenia has secured an ‘early involvement’ contract worth “several hundred million Swiss francs” (more than US$123 million) to deliver the first phase of a deep geological repository for radioactive waste in eastern Sweden.
Render of the entire future deep geological repository near the Forsmark nuclear power plant in Eastern Sweden (Image: SKB)
The project, commissioned by Swedish Nuclear Fuel and Waste Management Company (SKB), involves the design and construction of an underground facility near the Forsmark nuclear power plant. The build includes installation of a 500m-deep access tunnel, vertical shafts, a central hub, and extensive main and transport tunnels.
SKB ultimately plans to expand the site to around 66km of tunnels across 4km², with capacity for 12,000 tonnes of radioactive material.
Planning is set to begin in autumn 2025, with completion targeted for 2033.
The scope of the contract with Implenia includes the planning, design, and construction of an access tunnel to the first storage level, three vertical shafts for ventilation and an elevator, a central area as well as main and transport tunnels. (Image: SKB)
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