How clean is the grid behind LUMI (supercomputer)?

LUMI (supercomputer) runs on Finland's grid, which was 57 gCO₂/kWh and 96% clean in 2025 (Ember).

Where is LUMI (supercomputer) located?

LUMI (supercomputer) is in Kainuu, Finland.

Mapped (unverified)

LUMI (supercomputer)

Kainuu, Finland

LUMI (supercomputer) is a mapped data center in Kainuu, Finland. It runs on Finland's grid, which was 4% fossil-fuelled at 57 gCO₂e/kWh in 2025 (Ember).

Reporting by Eric Keller · Updated Jun 12, 2026

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Real parent

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Operator

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Grid carbon

57 gCO₂/kWh

Clean electricity

96%

DC power price

6.53¢/kWh

Region

Kainuu

Attribution & capacity confidence:mediumprimary source

Status · click to filter

Most sites are mapped — located but awaiting a second source. How we verify

Dot size = disclosed capacity (MW). Smallest = undisclosed, not small.

Overview

source: link

LUMI is a petascale supercomputer located at the CSC data center in Kajaani, Finland.

The grid behind this site

source: Ember · Eurostat

Grid carbon intensity

57 gCO₂/kWh

Clean electricity

96%

Fossil electricity

Data-center power price

6.53¢/kWh

A large data center in Finland pays 6.53¢/kWh for electricity — a household pays 23.19¢, 72% more than the data center (Eurostat).

National grid context, not this facility's own metering. Full country picture: Finland data centers.

In the news

source: Google News (local + English)