Data centres / Finland
Nebius Mäntsälä data centre
OperatingFinland4 of 13 fields known
Mäntsälä, Finland.
- Operator
- Nebius
- Owner
- Nebius
- Stage
- Operating (source, 8 October 2024)
- Cooling
- The company cites free cooling, a heat recovery system warming about 2,500 Finnish homes and a PUE of 1.1 at high IT loads.
Nebius states 75 MW of capacity after expansion but does not define the metric, so it is not in the structured field. Later Nebius material says the site hosts GB300 NVL72 systems.
What we checked
- In October 2024 Nebius announced tripling the Finnish site to 75 MW capacity (metric not defined) and up to 60,000 GPUs at full expansion. (source)
- Nebius says heat recovery at the site yields about 20,000 MWh a year. (source)
What we do not know yet
4 of 13 fields in a complete record are filled. Still missing:
- Capacity (MW)
- Power source
- Grid connection
- PUE
- Water use
- Chips
- Connectivity
- Certifications
- Planning reference
Checked on 2 October 2026. Reported and planned figures are shown as such. Not yet reviewed line by line by a second person. If something is wrong or you know more, tell us.