Nebius to triple capacity at Finland data center to 75 MW

The current expansion phase will enable us to place up to 60,000 GPUs at the Mäntsälä location alone.

October 8, 2024

1 min to read

The data center at Mäntsälä deploys innovative technological solutions that help to reduce its environmental footprint, reflecting Nebius’s approach to adopting sustainability principles in its infrastructure. These include hardware optimized for intensive workloads, energy-efficient supercomputing, advanced cooling and heat recovery systems.

“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. The capacity we are adding here during this expansion phase will enable us to better serve growing demand from AI builders globally.”

— Andrey Korolenko, Head of Infrastructure at Nebius

With a power usage effectiveness (PUE) as low as 1.1 under high IT loads, the data center significantly outperforms the global average of 1.58. It also 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 20,000 MWh of energy annually, heating the equivalent of 2,500 Finnish homes. Expansion of the data center will further increase the efficiency of the heat recovery program.

The Mäntsälä data center is also home to ISEG, among the most powerful supercomputers worldwide in both 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%.