27 operators · 53 facilities · 722 MW tracked
Data center companies in Spain
27 operators run 53 tracked data centers in Spain: 41 operational, 12 under construction or announced, 722+ MW of published IT capacity. Built from operator and registry sources — a shortlist of the market, not an exhaustive census.
How many data center companies operate in Spain?
Coloprice tracks 27 data center operators with 53 facilities in Spain. The largest by facility count is Iron Mountain (8 facilities); by published IT capacity it is Iron Mountain with 151 MW disclosed. Counts reflect the Coloprice catalog as of 2026-09-26.
Largest by tracked facilities
- Iron Mountain 8 facilities
- Digital Realty (Interxion) 5 facilities
- Equinix 5 facilities
- Nabiax 4 facilities
- Templus 3 facilities
Largest by published capacity
- Iron Mountain 151 MW published
- Nabiax 134 MW published
- Data4 100 MW published
- Global Switch 70 MW published
- Pure Data Centres Group 70 MW published
Operators in Spain
Sorted by tracked facilities, then published capacity. MW is the sum of capacity each operator publishes for its Spain sites — undisclosed values are not estimated.
| Operator | Facilities | Published MW | Cities | Status | Certifications | AI-ready |
|---|---|---|---|---|---|---|
| Iron Mountain | 8 | 151 | San Fernando de Henares (Madrid) | 1 live · 7 pipeline | ENS, ISO 14001, ISO 22301 | — |
| Digital Realty (Interxion) | 5 | not published | Madrid, Badalona | 5 live · 0 pipeline | ENS, ISO 14001, ISO 20000-1 | — |
| Equinix | 5 | not published | Madrid | 5 live · 0 pipeline | Climate Neutral Data Centre Pact, ISO 14001, ISO 22301 | — |
| Nabiax | 4 | 134 | Alcalá de Henares (Madrid), Madrid, Terrassa (Barcelona) | 3 live · 1 pipeline | All 3 modules designed and built according to Uptime Institute Tier III standards, Designed and built to Tier III standards (ADC2), Operated according to Tier III standards | 1 |
| Templus | 3 | 25 | Alcalá de Henares (Madrid), Madrid | 3 live · 0 pipeline | ENS (Alto), ISO, Tier III Ready (per operator) | — |
| Data4 | 2 | 100 | Alcobendas (Madrid), San Agustín del Guadalix (Madrid) | 2 live · 0 pipeline | not published | — |
| Global Switch | 2 | 70 | Madrid | 2 live · 0 pipeline | not published | — |
| Oxigen Data Center | 2 | 6 MW (1 of 2 sites) | Sant Cugat del Vallès | 2 live · 0 pipeline | Tier III Certification of Design Documents (Uptime Institute), ISO 14001, ISO 20000 | — |
| T-Systems Iberia | 2 | 1 MW (1 of 2 sites) | Sant Boi de Llobregat, Cerdanyola del Vallès | 2 live · 0 pipeline | ISO 14001, ISO 20000, ISO 27001 | — |
| Kumo Networks | 2 | not published | Murcia, Paterna (Valencia metro area) | 2 live · 0 pipeline | Uptime Institute Tier IV Certification of Constructed Facility, Uptime Institute Tier IV Certification of Design Documents | — |
| Silc Immobles | 2 | not published | Cerdanyola del Vallès | 2 live · 0 pipeline | Tier III Certification of Constructed Facility (Uptime Institute), Tier III Certification of Design Documents (Uptime Institute) | — |
| Pure Data Centres Group | 1 | 70 | Meco | 0 live · 1 pipeline | not published | — |
| ACS Group (Iridium) | 1 | 50 | Alcalá de Henares (Madrid) | 0 live · 1 pipeline | not published | — |
| Prime Data Centers | 1 | 40 | Alcobendas (Madrid) | 0 live · 1 pipeline | not published | 1 |
| Merlin Properties | 1 | 20 | Getafe (Madrid) | 1 live · 0 pipeline | not published | — |
| Quetta Data Centers | 1 | 20 | Tres Cantos | 0 live · 1 pipeline | Tier III Certification of Design Documents (Uptime Institute) | 1 |
| CyrusOne | 1 | 18 | Madrid | 1 live · 0 pipeline | not published | — |
| EdgeConneX | 1 | 8 | Sant Boi de Llobregat | 1 live · 0 pipeline | not published | — |
| NTT Global Data Centers | 1 | 7 | Las Rozas de Madrid | 1 live · 0 pipeline | not published | — |
| Adam | 1 | 2 | Alcalá de Henares (Madrid) | 1 live · 0 pipeline | Climate Neutral Data Centre Pact, ENS (High grade), ISO 20000 | — |
| acens (Telefónica Tech) | 1 | not published | Alcobendas (Madrid) | 1 live · 0 pipeline | ISO 14001, ISO 27001, ISO 9001 | — |
| Arsys Internet | 1 | not published | Logroño | 1 live · 0 pipeline | not published | — |
| ASAC Comunicaciones | 1 | not published | Llanera | 1 live · 0 pipeline | ENS Categoría Alta, ISO 27001, ISO 9001 | — |
| Atlantic Data Infrastructure (ADI) | 1 | not published | Abanto-Zierbena (Bizkaia, Basque Country) | 1 live · 0 pipeline | Uptime Institute Tier IV Certification of Constructed Facility, Uptime Institute Tier IV Certification of Design Documents | — |
| EspacioRack | 1 | not published | Pozuelo de Alarcón (Madrid) | 1 live · 0 pipeline | ENS, ISO 27001, ISO 9001 | — |
| nLighten | 1 | not published | Madrid | 1 live · 0 pipeline | not published | — |
| Walhalla (formerly Tissat) | 1 | not published | Castellón de la Plana | 1 live · 0 pipeline | Tier IV Certification of Design Documents (Uptime Institute) | — |
AI-ready operators in Spain
3 of 27 operators mark at least one Spain facility as AI-ready (published liquid cooling or high-density design): Nabiax, Prime Data Centers, Quetta Data Centers.
See also
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FAQ
Which is the largest data center company in Spain?
By tracked facilities: Iron Mountain with 8 sites. By published capacity: Iron Mountain with 151 MW. Facility counts and MW come from operator pages and registries; published megawatts describe site design, not vacant capacity for a new order.
Do all of these companies sell colocation in Spain?
No. The list includes colocation and wholesale operators as well as hyperscaler- or enterprise-owned sites that do not sell space. Open each facility card for status, certifications and the operator's own page before requesting a quote.
How is this list of Spain data center companies built?
From the Coloprice catalog: every facility is recorded from a primary source (operator website, press release, certification registry), so a company appears here when at least one of its Spain sites is tracked. No operator pays for placement, and the ranking is not for sale.
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