Data4
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Data4 is a French-headquartered data center operator that designs, builds, finances and operates its own colocation campuses across Europe, offering everything from a single rack to dedicated wholesale buildings. As of 2025-2026 the company describes operating around 16-24 data centers organized into roughly ten multi-building campuses across France, Italy, Spain, Poland, Germany and Greece, with land and power reserves it calls unique in the European market (137 hectares and 384MW cited in recent company materials). Its flagship Paris-Saclay campus, built on former Alcatel and Nokia industrial land, has grown into one of the largest data center hubs in Europe at roughly 500MW, and in 2026 the company announced its largest single project yet: a planned €5 billion, 700MW campus on a former steelworks site in Escaudain, Northern France, explicitly framed around Europe’s AI and cloud growth. Data4’s campus model bundles carrier- and cloud-neutral interconnection (claiming links to well over 100-220 telecom and cloud providers) with colocation space, positioning each site as a connectivity hub rather than a standalone building.
Data4 has a confirmed data center presence at the following locations:
FACILITY OPERATOR
Email: [email protected]
Data4 Data Center Locations
- Escaudain, France Data4 Escaudain CampusAI DATA CENTER PENDING REVIEW
Announced in 2026 as Data4's largest ever campus project, this €5 billion, up to 700MW development sits on a former steelworks site and is explicitly positioned to support Europe's growing AI and cloud computing demand. - Marcoussis, France Data4 Paris-Saclay Campus (PAR01/PAR02/PAR03) CARRIER-NEUTRAL PENDING REVIEW
Data4 has transformed former Alcatel and Nokia industrial land near Paris into a roughly 500MW data center hub, among the largest campuses in Europe. - Hanau, Hesse, Germany Data4 Frankfurt Campus (Hanau) PENDING REVIEW
Data4 broke ground on this campus at the site of the former Großauheim military base near Frankfurt, planning to build it out to roughly 180MW of capacity. - Paiania, Greece Data4 Athens Campus (Paiania) PENDING REVIEW
- Cornaredo, Italy Data4 Milan Campus (MIL01/MIL02) CARRIER-NEUTRAL PENDING REVIEW
The Milan campus near Cornaredo has expanded over multiple phases to at least seven buildings (MIL01 DC5-DC7 and beyond), making it one of Data4's largest Italian sites. - Luxembourg City, Luxembourg Data4 Luxembourg CARRIER-NEUTRAL · +352 26 19 18 1 PENDING REVIEW
This facility, created in 2003 roughly 5km from Luxembourg City, was historically run across multiple buildings totalling around 3,000 m² of technical area and up to 5MW of power. - Jawczyce, Poland Data4 Warsaw Campus (Jawczyce) PENDING REVIEW
Opened in 2023 as Data4's first Polish data center, the Jawczyce site is being expanded in phases toward a planned 60MW, four-building development. - San Agustín del Guadalix, Spain Data4 Madrid Campus (MAD01/MAD02) CARRIER-NEUTRAL PENDING REVIEW
Data4 signed a power purchase agreement with TotalEnergies to supply renewable energy specifically to its Spanish data centers, including this Madrid campus.
By Continent
AI Data Centers
Data4's clearest AI-specific move is its 2026 announcement of a new campus in Escaudain, in Northern France, described as the company's largest ever data center project with a planned €5 billion investment and up to 700MW of power on a former steelworks site. The company frames the site explicitly around rising demand for AI training, cloud computing and processing capacity in Europe, and points to its position near the Frankfurt-London-Amsterdam-Paris data corridor as a rationale. As of 2026 this project was still in early development (feasibility stage), rather than an operational AI facility, and no specific GPU hardware or liquid-cooling detail has been disclosed publicly for it yet.
- Escaudain, France Data4 Escaudain Campus AI DATA CENTER PENDING REVIEW
Announced in 2026 as Data4's largest ever campus project, this €5 billion, up to 700MW development sits on a former steelworks site and is explicitly positioned to support Europe's growing AI and cloud computing demand.
Common Questions
In which countries does Data4 operate physical data centers?
Data4's own website currently lists own-built and operated data centers in France, Italy, Spain, Poland, Germany and Greece, organized around campuses near Paris, Milan, Madrid, Warsaw, Frankfurt (Hanau) and Athens.
Does Data4 have AI-specific infrastructure?
Yes — in 2026 Data4 announced a €5 billion, up to 700MW campus in Escaudain, Northern France, explicitly described as its largest campus project and built to support 'Europe's AI growth,' including cloud and AI training/inference demand, though it remains at feasibility/development stage rather than fully operational.
Is Data4 a cloud provider or a colocation company?
Data4 is a colocation operator: it builds and operates data center campuses and rents rack, cage, suite or whole-building space to customers, including cloud and telecom operators who run their own services from Data4's facilities — Data4 itself does not sell its own branded cloud compute/storage service to end customers.
Does Data4 still operate a data center in Luxembourg?
Sources conflict: several third-party directories still list a Data4 Luxembourg facility near Luxembourg City, but Data4's own current website description of its footprint (France, Italy, Spain, Poland, Germany, Greece) no longer includes Luxembourg, suggesting a possible change in that facility's status or ownership that could not be independently confirmed.
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