GleSYS
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Glesys is a Swedish IaaS and colocation provider, founded in 1999, that owns and operates its own data centers in Falkenberg and Stockholm, Sweden, plus multiple sites in Oulu, Pori, and Tampere, Finland, with additional partner colocation presence in Amsterdam, London, Oslo, and Frankfurt. Its Finnish footprint grew substantially in 2025 when it acquired Verne’s managed private-cloud operations and two data centers (Pori and Tampere) from Verne, and in mid-2026 it signed an agreement with Trevian Asset Management to build “Campus Oulu,” a new AI-ready campus with long-term expansion potential of up to 300 MW. The company was founded on web hosting and email services before expanding into VPS, dedicated servers, colocation, connectivity, and private/public cloud, and by 2023 it became majority-owned by Cube Infrastructure Managers while founder Glenn Johansson retained a minority stake and continued as CEO. Glesys differentiates itself around Nordic sustainability and data sovereignty: it runs on 100% renewable electricity, reuses a large share of waste heat from its Swedish sites through district-heating networks, and reports an average PUE around 1.28. Several of its facilities — notably a bedrock-carved underground site in Pori originally built by the Finnish Defence Forces — now support direct liquid cooling for GPU, AI, and HPC workloads.
GleSYS operates as a cloud provider and colocation provider, with facilities at the following locations:
FACILITY OPERATOR
Email: [email protected]
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GleSYS Data Center Locations
- Pori, Finland Pori Data Center TIER III EQUIVALENT PENDING REVIEW
The Pori facility is a unique underground data center carved out of bedrock inside nine former tunnel halls originally quarried by the Finnish Defence Forces. - Oulu, Finland Oulu Data Centers (existing) PENDING REVIEW
Industry press reports Glesys owns and operates three separate existing data centers in Oulu, in addition to the new Campus Oulu development. - Oulu, Finland Campus Oulu PENDING REVIEW
Campus Oulu is being built on former Nokia premises at Kaapelitie in the Rusko district of Oulu, with long-term expansion potential of up to 300 MW. - Tampere, Finland Tampere Data Center TIER III CARRIER-NEUTRAL PENDING REVIEW
The Tampere facility sits in the city center near the railway station and hosts more than ten connectivity providers on site. - Helsinki, Finland PENDING REVIEW
- Frankfurt, Hesse, Germany Frankfurt Partner Facility (firstcolo) CARRIER-NEUTRAL PENDING REVIEW
The Frankfurt presence operates via firstcolo-operated facilities near DE-CIX, one of the world's largest internet exchanges. - Amsterdam, Netherlands Amsterdam Equinix Facility CARRIER-NEUTRAL PENDING REVIEW
Per GleSYS's own site: Glesys describes its Amsterdam Equinix facility as offering dense networking, extensive peering, and ultra-low latency as a gateway for expanding digital presence. - Oslo, Norway Oslo Partner Facility PENDING REVIEW
Per GleSYS's own site: Glesys describes its Oslo partner facility as providing renewable-powered infrastructure connecting customers to Europe's growing digital region. - Falkenberg, Sweden Falkenberg Data Center TIER III CARRIER-NEUTRAL PENDING REVIEW
The Falkenberg facility is the company's flagship Swedish site, engineered with 2N redundancy and rack densities up to 250 kW with liquid cooling for GPU and HPC workloads. - Hägersten, Sweden Stockholm (Västberga) Data Center TIER II-III CARRIER-NEUTRAL PENDING REVIEW
The Stockholm facility is housed in a former cable factory built by Asea, adjacent to the E4 highway south of central Stockholm. - London, UK London Equinix Facility CARRIER-NEUTRAL PENDING REVIEW
Per GleSYS's own site: Glesys describes its London Equinix facility as delivering world-class network density and extensive international peering to expand digital reach at global scale.
By Continent
Common Questions
Does Glesys have GPU or AI-specific data center infrastructure?
Yes. Glesys's Falkenberg, Sweden facility supports up to 250 kW per rack with liquid cooling for GPU, AI, and HPC workloads, its Pori, Finland facility (an underground bedrock site) has direct liquid cooling installed and in operation across an 11 MW total capacity, and the company is building a new AI-ready campus, Campus Oulu, in Finland with an initial 8 MW phase targeted for autumn 2026 and long-term potential of up to 300 MW of liquid-cooled capacity.
Who owns Glesys?
Glesys became majority-owned by Cube Infrastructure Managers in 2023, while founder Glenn Johansson and other key employees retained a minority stake and Johansson continued as CEO.
How many data centers does Glesys operate?
As of 2026, Glesys owns and operates data centers in Falkenberg and Stockholm, Sweden, and multiple sites in Oulu (three facilities), Pori, and Tampere, Finland, with additional partner colocation facilities in Amsterdam, London, Oslo, and Frankfurt.
Is Glesys a colocation company or a cloud provider?
Both — Glesys sells colocation, dedicated servers, and private/public cloud infrastructure from its own Nordic data centers, positioning itself as a sovereign, EU-based hybrid infrastructure provider.
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