Nebius Scales AI Infrastructure with 310MW Campus in Finland

Nebius has announced the construction of a new AI-focused data centre campus in Lappeenranta, Finland, with a planned capacity of up to 310MW.

The project forms part of the company’s wider effort to expand AI infrastructure and meet demand for high-performance computing used in training and inference, deploying NVIDIA platforms in its facilities.

Construction will proceed in phases over the next few years – this phased build allows operations to start before the full campus is complete, bringing early capacity online while the site is still being developed.

Nebius expects the first capacity from the Lappeenranta site to be available in 2027, positioning it among the largest dedicated AI facilities in Europe once fully deployed.

Expanding Nordic data centre footprint

The Lappeenranta development follows Nebius’ expansion of its existing Finnish data centre in Mäntsälä, which has now reached a capacity of 75MW. That site already plays a role in the company’s European operations and provides a foundation for further growth in the region.

Arkady Volozh, Founder and CEO of Nebius, says: “We have been building in Finland for many years and are pleased to be expanding our presence here.

“Lappeenranta represents a significant addition to our global AI infrastructure build-out, and will make a significant contribution to achieving our capacity goals.”

The company is building a global network of purpose-built AI data centres and is targeting more than 3GW of contracted power by the end of 2026.

In the EMEA region alone, Nebius has secured more than 750MW across owned sites and colocation facilities. Alongside its Finnish presence, the company is also developing a 240MW AI facility near Lille, France.

Beyond Europe, Nebius has received approval for a gigawatt-scale AI factory in Independence, Missouri, marking another step in its global expansion.

These developments reflect the growing requirement for infrastructure designed specifically for AI workloads, which demand dense compute, advanced cooling and high energy capacity.

AI compute and infrastructure design

Nebius calls the new data centre an AI factory – facilities that are purpose-built to deliver large-scale compute power for AI.

These sites support training, where models learn from vast datasets, and inference, where trained systems process real-time inputs.

The company deploys NVIDIA accelerated compute platforms across its facilities. The Mäntsälä data centre already houses Europe’s first operational deployment of the NVIDIA GB300 NVL72 platform.

Nebius also plans to introduce the NVIDIA Vera Rubin NVL72 platform later this year, further expanding its hardware offering.

The Lappeenranta campus will span around 100 acres and consist of multiple buildings designed to support high-density workloads. As with other AI-focused sites, power delivery, cooling efficiency and scalability will be considered at the design stage.

The cooling systems will use a closed-loop liquid approach, which circulates coolant within a sealed system – this will reduce reliance on external water sources and keep consumption low.

The system also integrates heat recovery, allowing excess heat generated by servers to be redirected into local district heating networks.

At Mäntsälä, this approach avoided approximately 4,000 tonnes of CO2e emissions linked to heat production in 2025 and reduced heating costs for connected households by around 10%.

Nebius is applying similar principles to the Lappeenranta site, aligning with its focus on energy efficiency and low-carbon electricity sourcing.

Regional impact and skills development

The development brings economic activity to the South Karelia region, as the construction of the AI factory is expected to create up to 700 skilled jobs, largely sourced locally with around 100 permanent roles once the facility becomes operational.

Nebius is also exploring collaboration with local academic institutions through its Nebius Academy initiative. The programme focuses on building AI skills and strengthening the regional talent pipeline for data centre and technology roles.

City of Lappeenranta Mayor Tuomo Sallinen says: “Lappeenranta offers an increasingly attractive environment for innovation, with our universities playing a key role in developing top talent tailored to the needs of high-tech industries.

“The new data centre will position our city at the forefront of Finland’s AI ecosystem and help meet Europe’s growing demand for artificial intelligence for decades to come.

“We’re proud that this project is being realised in Lappeenranta and in Finland, built sustainably on clean energy and driven largely by Finnish expertise.”