atNorth FIN04 Myllykoski Mega Site
Under constructionatNorth FIN04 Myllykoski Mega Site is a data center in Kouvola (Myllykoski), Finland, operated by atNorth, with 430 MW of published IT capacity, currently under construction.
Large greenfield atNorth campus under construction in Myllykoski, Kouvola, planned for 430 MW total capacity with waste heat recycled through the local KSS heating plant.
Coloprice Score
28 out of 100
Class E · #10 of 31 in Finland
- Resilience0/35
- Compliance0/20
- Transparency10/20
- Scale15/15
- Maturity3/10
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FIN04 is atNorth's mega campus in Myllykoski, Kouvola, about 139 km north-east of Helsinki, and the operator's fourth site in Finland. The campus covers 65 hectares and is stated at 430 MW of power capacity, with a path to several hundred additional MW; it targets both colocation and build-to-suit customers. atNorth's page said the site would be ready for operation in the first half of 2026. Design values listed include a PUE of 1.2 or lower, an average rack density of 40 kW and support for 100+ kW liquid-cooled racks, chilled-water cooling with free-cooling compressors at N+1, and N+2 fan-wall cooling in a liquid-cooling-ready white space. Power distribution is N+1 with UPS and generator backup and fuel for at least 48 hours. Waste heat is to be recycled through the KSS heating plant into local district heating and hot water, with energy partner KSS Energia. Two diverse fiber entry points and two meet-me rooms are listed. Year opened and certifications are not published for this site.
- ▮430 MW campus power capacity on 65 hectares, with a path to several hundred additional MW.
- ▮Design PUE of 1.2 or lower; average rack density 40 kW, 100+ kW liquid-cooled racks supported.
- ▮Waste heat to be recycled through the KSS heating plant for local district heating.
- ▮Two diverse fiber entry points and two meet-me rooms.
- ▮Operator targets operation in the first half of 2026; status shown here follows our last verified record.
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Data release:
Source — Verified against operator sources · data pending on-site verification