Nebius to expand Mäntsälä data center capacity

European AI data center developer Nebius has announced plans to triple the capacity of its data center in Mäntsälä, Finland. This expansion will see Nebius place upwards of 60,000 GPUs at the facility, growing its capacity from 25MW to 75MW. This is part of a broader program that will see the company invest upwards of $1 billion in AI infrastructure in Europe by mid-2025.

The Mäntsälä expansion will include the deployment of Nvidia H200 Tensor Core GPUs, which will be available to customers starting in November, making Nebius one of the first European providers to bring the platform to market. The data center utilizes free cooling, reducing reliance on chillers and refrigerants, and incorporates a heat recovery system to repurpose server heat for local residential heating. This system currently recovers approximately 20,000MWh of energy annually. The expansion will further increase the efficiency of the heat recovery system.

Andrey Korolenko, Nebius head of product and infrastructure, said: “Tripling capacity at our flagship site in Finland is an important step in our build-out of best-in-class AI infrastructure in Europe. Our data center at Mäntsälä is our ‘home base’ and showcases our ambition and the technical capabilities of the Nebius team, as well as our approach to adopting sustainability principles in our infrastructure.”