Nebius, a European AI data center developer, is tripling the capacity of its data center in Mäntsälä, Finland, approximately 40 miles north of the capital, Helsinki. The data center was originally built by Yandex, which purchased the land in 2013 and opened it in 2014 as the company's first 'greenfield' project. Yandex’s European operation was rebranded to Nebius in 2024.
The expansion in Mäntsälä is part of Nebius' broader $1 billion investment program in AI infrastructure across Europe, set to be completed by mid-2025. This initiative includes the development of build-to-suit data centers at greenfield sites, colocations, and a recently announced GPU cluster in Paris. The expansion will see Nebius place upwards of 60,000 GPUs at the facility.
Before its rebranding to Nebius, the Mäntsälä data center was operated by Yandex and utilized by Yandex Data Factory, the machine learning and Big Data division of the former Russian firm. Founded in 2014 and based in Amsterdam, Yandex Data Factory focused on assisting businesses in leveraging their data to enhance operational efficiency.
| Distance | Site | About |
|---|---|---|
| 0.80 miles | FCDC: Mäntsälä 2 |
FCDC is developing a data center building at Graniittitie 6 in the Kapuli business area of Mäntsälä, on a plot leased from the municipality, for a single operator.
|
| 0.82 miles | Nebius Mäntsälä 2 |
Nebius is developing a second data center in Mäntsälä's Kapuli business district on a separate site from its existing facility.
|
| 0.95 miles | FCDC: Mäntsälä 1 |
FCDC is the developer of the first data center building at Gneissitie 3 in the Kapuli industrial area of Mäntsälä, which Verne operates.
|
| 0.97 miles | Verne: Mäntsälä DC05 |
Verne has started construction of a purpose-built data centre campus in Mäntsälä’s Kapuli industrial area. The AI and high-performance computing facility uses renewable electricity supplied through Nivos and offers its waste heat for local heating projects.
|
| 1.02 miles | Verne: Mäntsälä DC06 | |
| 10.75 miles | Prime: Järvenpää, Finland |
US-based operator Prime Data Centers has announced plans for a significant expansion into Finland, targeting a 12-hectare site in the Vähänummi industrial area of Järvenpää.
|
| 12.61 miles | QTS: Jokela, Tuusula |
QTS plans a two-building data center campus in the western employment area of Jokela, Tuusula, on a 16.8-hectare site along Vallunlenkki.
|
| 18.24 miles | Lumilogic: Riihimäki |
Lumilogic is converting a former industrial bakery on Junttatie in Riihimäki into a data center for AI training and high-performance computing.
|
| 19.01 miles | FCDC: Kerava |
FCDC plans a data center campus of five buildings in the Alikerava area of southern Kerava, between the Lahti motorway and the Keravanjoki river.
|
The data center is built to make use of outside-air cooling. The whole building is shaped somewhat like airplane wings, with an aerodynamic profile that uses the prevailing wind to direct air through the facility at the correct pressure to provide cooling without additional power demand.
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