AI Data Center List

Nebius Mäntsälä

AI data center in Mäntsälä, Uusimaa, Finland, operated by Nebius.

Nebius's home campus in Mäntsälä, Finland, tripled to 75 MW by early 2026 and the site of Europe's first live GB300 NVL72 deployment.

Live power
75MW 1 Company figure, as of 2026
Planned power
145MW 1 Company
Status
Operational First power 2024
Accelerators
— No audited count published

Power: what each source says

75 MW operational early 2026 (Nebius). Company says a further ~70 MW expansion completes by end-2027 (Nebius, via Epoch AI). Nebius separately announced a 310 MW Finland AI factory.

Figures labelled Epoch AI are estimates from satellite imagery, permits and filings. Company figures come from the operator, owner or its filings. IT power is what the servers draw; in Epoch AI’s figures for these campuses it runs about 15–35% below total facility power.

Tenants

Nebius cloud customers

Campus facts

Operator
Nebius 1
Owner / developer
Nebius 1
City
Mäntsälä 1
State / region
Uusimaa 1
Country
Finland 1
First power
2024 1
Chips
NVIDIA H100, H200, GB300 1
GPUs / accelerators
Not published
Cooling
liquid 1
Power source
grid 1
Coordinates
60.63° N, 25.32° E (town level)
Verified

Sources

  1. Nebius: tripling Finland data center to 75 MW accessed 2026-11-09
  2. Nebius: first live GB300 NVL72 deployment in Europe accessed 2026-11-09
  3. Nebius: 310 MW AI factory in Finland accessed 2026-11-09
  4. Epoch AI, AI data centers dataset (CC-BY 4.0, updated 2026-11-06) (licence: CC BY 4.0) accessed 2026-11-09