Midgard Infra, formerly Altibox Carrier, announced it will extend its recently announced Oslo–Stockholm long-haul fibre route onward into Finland, adding a fully diverse, unrepeatered subsea crossing and establishing a continuous, physically diverse trans-Nordic corridor linking Norway, Sweden and Finland.
The extension builds directly on the diversity-first design principle behind the Oslo–Stockholm route. Where that route delivers full physical separation from existing terrestrial infrastructure across the corridor, the Finnish extension carries the same principle across water: engineered from the outset to share no common landing point, cable, or right-of-way with existing systems serving Sweden-Finland.
The subsea segment will be deployed as a repeaterless cable system. The new segment will land on the coast northeast of Stockholm and southwest of Finland, spanning approximately 200 kilometres and carrying 144 fibre pairs. Construction is scheduled to commence in early 2027, with the system expected to enter service in 2029.
A Single, Diverse Spine Across the Nordics
With the Finnish extension, Midgard Infra moves from a two-country route to a continuous Nordic spine, giving carriers, hyperscalers and data centre operators a single, physically diverse path between Norway, Sweden and Finland under one operator.
Svein Arild Ims, CEO of Midgard Infra: "Finland is fast becoming one of the places where Europe builds and runs its largest AI systems, and compute on that scale is only as useful as the connectivity feeding it. A diverse corridor that stops at the Swedish border isn’t a diverse Nordic corridor; it’s half a solution. By taking the system subsea on a fully unrepeatered crossing, with every active component sitting safely onshore, we are not adding complexity to reach Finland, we are removing it. That is precisely the kind of end-to-end resilience the operators building this next wave of AI infrastructure are now asking us for."
