Nebius, an AI infrastructure company, has announced that it will triple the capacity of its data centre in Mäntsälä, Finland.
The current expansion phase will enable Nebius to place up to 60,000 GPUs at the Mäntsälä location alone, with annual revenue potential of over US$1 billion at full capacity utilisation.
The expansion of the Finnish data centre – a location with strong green credentials – is part of Nebius’ programme to invest more than US$1 billion in AI infrastructure in Europe by mid-2025. The programme also includes investments in build-to-suit data centres at greenfield sites primarily in Europe as well as colocations, such as the recently announced GPU cluster in Paris.
Andrey Korolenko, Head of Infrastructure at Nebius, 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 centre 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. The capacity we are adding here during this expansion phase will enable us to better serve growing demand from AI builders globally.”
Nebius is already one of the leading providers of GPU capacity in Europe through the Mäntsälä data centre. The expansion in Finland will include the deployment of NVIDIA H200 Tensor Core GPUs, which will be available to customers from November 2024, in addition to already installed NVIDIA H100 Tensor Core GPUs that form the backbone of Nebius’ fleet of NVIDIA GPUs.
Nebius will also be one of the first providers in Europe to bring the energy-efficient NVIDIA Blackwell platform to customers in 2025.
The data centre at Mäntsälä deploys innovative technological solutions that help to reduce its environmental footprint, reflecting Nebius’ approach to adopting sustainability principles in its infrastructure. These include hardware optimised for intensive workloads, energy-efficient supercomputing, advanced cooling and heat recovery systems.
With a Power Usage Effectiveness (PUE) as low as 1.1 under high IT loads, the data centre significantly outperforms the global average of 1.58. It also utilises 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, heating the equivalent of 2,500 Finnish homes. Expansion of the data centre will further increase the efficiency of the heat recovery programme.
The Mäntsälä data centre is also home to ISEG, among the most powerful supercomputers worldwide in performance and energy efficiency. With 35.26 GFlops per watt-second, it ranks in the top 25 supercomputers by energy efficiency globally. The facility’s innovative design allows for operations at higher server temperatures, up to 40°C, contributing additional energy savings of approximately 15%.
