Pure DC begins €1.5B Finland AI campus, Microsoft signs on

Oaktree-backed Pure Data Centres is starting construction on the first 110-megawatt phase of what it says will become a 550MW AI campus in Seinäjoki, Finland, and Bloomberg reported that Microsoft is among the clients slated to take capacity there. Phase one carries a price tag of over €1.5 billion ($1.7 billion), on the way to a total projected investment of €7.5 billion ($8.55 billion) across the full site.

The number worth staring at isn't the top-line figure, it's that Pure DC is saying the first phase is already fully leased before the campus is properly built. In a European AI infrastructure market where power access and planning permits have been the actual bottlenecks for the last two years, a developer being able to point to a 370-acre estate with access to more than 700MVA of renewable power, and to a substation for the first data hall that has already been constructed, is closer to the real story than the raw megawatt count. Pure DC is claiming what every developer in this segment wants to claim: that they can actually deliver.

For Microsoft, the logic is straightforward. Europe has been pushing to run more model training and inference on infrastructure inside EU borders, and Finland has been a preferred location for hyperscalers thanks to cool climate, cheap Nordic power and a stable grid. Locking in anchor capacity at a large, purpose-built AI campus rather than retrofitting an older cloud region is the sort of move that quietly reshapes where the next wave of frontier workloads actually gets run. According to Computer Weekly, the buildout is one of Finland's largest-ever inward investment projects and the largest by a UK company in the country.

The honest caveats: the reporting doesn't spell out how much of the 110MW Microsoft is taking, whether later phases are pre-leased or being built speculatively, or how the full €7.5 billion stack will be financed. Construction is expected to span roughly a decade and generate about 3,000 construction jobs in the South Ostrobothnia region, and a lot can change on a project of that horizon.

The piece to watch from here is who else lands anchor deals of this shape, because the ceiling on European AI ambition over the next few years is going to be set less by model quality and more by how many of these campuses actually get built and energised.