Pure Data Centres Group has launched one of Europe’s largest ever artificial intelligence (AI) datacentre projects, a 550MW campus in Seinäjoki, Finland with claimed total investment of more than €7.5bn – the largest ever inward investment into Finland by a UK company.
Phase 1 will see more than €1.5bn deployed to deliver 110MW of AI-ready capacity across a site that has planning permission, power secured, and its first substation constructed and live. The developer confirms the first phase is fully leased, with Bloomberg reporting that Microsoft is among customers signed up to take capacity at the campus.
The 370-acre site will scale to support more than 550MW of IT capacity for AI and machine learning workloads, and draws on access to more than 700MVA of renewable power from Finland’s grid. The development uses repeatable 40MW AI-ready modules built with direct liquid cooling to handle the thermal demands of next-generation hardware, and all cooling systems operate as closed loops with zero water use in operation.
The Seinäjoki announcement lands at a time when power availability has become the single most important growth inhibitor for the European datacentre market. According to the European Datacentre Association’s State of European datacentres 2026 report, 67% of operators now rank access to power as their biggest challenge over the next three years, ahead of permitting issues, skills shortages and high energy prices. The report concludes that growth is “increasingly constrained – not by capital or customer appetite, but by energy availability, grid readiness and permitting complexity”.
That constraint is most acute in the traditional Flap-D markets of Frankfurt, London, Amsterdam, Paris and Dublin, where grid congestion and planning friction have pushed vacancy rates to historic lows. The Eudca reports that “growth is now increasingly distributed across Southern Europe, the Nordics, Central and Eastern Europe, and a rising group of Tier-2 metropolitan regions” as operators follow available power rather than fibre density.
Pure DC’s own portfolio reflects this shift: alongside Seinäjoki, the company has active projects in Madrid and Abu Dhabi, while its Dublin campus at Ballycoolin bypasses local grid constraints entirely through a private 110MW on-site microgrid.
Finland sits at the top of the International Data Center Authority’s Sigma Index – a composite measure of datacentre suitability that accounts for grid headroom, water stress and digital readiness – with a score of 99 out of 100. The International Data Center Authority (Idca’s) Global energy report, published this month, puts Finland’s sustainable electricity share at 84.3%, comprising 35% nuclear, 18.2% hydro, 17% wind and 13.3% biomass. The country also ranks in the green zone on Idca’s Emissions Reduction Challenge index with a score of 2.3, among the lowest of any developed economy, offering the kind of stable, low-cost, low-carbon baseload that hyperscalers need to power AI training clusters drawing tens of megawatts continuously.
Gary Wojtaszek, executive chairman and interim CEO of Pure DC, said: “We are not building datacentres in Seinäjoki. Together with our partners, including the Seinäjoki Municipality, we are helping create one of Europe’s most important AI ecosystems capable of supporting global tech leaders as well as the next generation of Finnish entrepreneurs and innovators.”
The project will generate more than 1,500 construction jobs in Phase 1 and more than 3,000 over the full decade-long buildout. Pure DC has committed to a skills partnership with Seinäjoki University of Applied Sciences and vocational institutions, that aims to create a pipeline from training to employment in a region traditionally associated with forestry and paper milling.
Waste heat from the campus will be redirected into the city’s district heating network – an approach Microsoft has already proven in Finland through an existing partnership with energy utility Fortum, which supplies around 40% of district heating demand for 250,000 people using waste heat from its datacentres in the Helsinki region, according to the Idca report.
UK secretary of state for business and trade Peter Kyle said: “It’s fantastic to see a British-headquartered firm thrive on the world stage by delivering the UK’s largest inward investment into Finland, cementing our position as a world leader in the AI space.”
When a hyperscaler – reportedly Microsoft – commits to 110MW of capacity in a Finnish city 312km north of Helsinki, with an option on 440MW more, it suggests the European datacentre map is being redrawn around the grid, rather than around traditional network peering points. The Flap-D markets will remain critical for latency-sensitive enterprise workloads, but the industrial-scale AI capacity that will underpin the next wave of cloud services is heading north.
