Company lists · Data refreshed September 2026
Top 14 AI data center builders based in Spain
RevenueBase identified 37 AI data center builders headquartered in Spain as of September 2026 and tracks 787 professional contacts across them, including 146 with verified work emails. Madrid is the largest hub.
This list covers AI data center builders headquartered in Spain, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 14 largest AI data center builders based in Spain
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 142 contacts → | ||||
Partial evidence “Submer Group connects independent specialist companies across the AI infrastructure stack to close the gap between AI ambition and AI reality.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 104 contacts → | ||||
Indirect evidence “With over 20 years of experience, we design and deliver sustainable, resilient and energy-efficient facilities that meet the highest international standards for reliability…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 97 contacts → | ||||
Strong evidence “PQC is an engineering and architecture firm specialized in Data Centers.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 88 contacts → | ||||
Strong evidence “Quark es una compañía líder en Arquitectura, Ingeniería y Project Management para Data Centers, que asesora a las empresas más avanzadas tecnológicamente.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 26 contacts → | ||||
Indirect evidence “El origen de Climatización de Ambientes Técnicos se remonta al año 1979, comenzando su actividad como Servicio Técnico de equipos de aire acondicionado Hiross, actualmente…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 25 contacts → | ||||
Strong evidence “We are a neutral data center provider with 30 years of experience, 18 of them managing critical infrastructure in our own Data Centers in Madrid and Barcelona.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 13 contacts → | ||||
Indirect evidence “En Nemix Computer Spain, transformamos ideas en soluciones tecnológicas de alto rendimiento.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 10 contacts → | ||||
Partial evidence “Somos una plataforma dedicada al desarrollo y la operación de centros de datos sostenibles, cuyo objetivo es ofrecer soluciones para satisfacer la creciente demanda del sector…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 7 contacts → | ||||
Strong evidence “Sierra DC owns and operates large (30-100 MW) green powered data centers for the future of AI, machine learning, IoT, ERP and cloud services in Europe, Africa and Middle East.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 6 contacts → | ||||
Indirect evidence “Aquads Technologies es una empresa de ingeniería especializada en el análisis, diseño, construcción y mantenimiento de Infraestructuras de misión crítica, entre las que englobamos…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 6 contacts → | ||||
Strong evidence “At Inferencia Integral, our mission is to provide sustainable data center services and to facilitate the integration of generative AI into organizations’ internal and external…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 5 contacts → | ||||
Partial evidence “Open Up: Soluciones y Servicios Integrales en Centros de Datos.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 3 contacts → | ||||
Indirect evidence “DConcept was founded from an entrepreneurial mindset and more than 20 years of experience in the sector across Spain, Europe, and the Middle East, providing engineering…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 1 contacts → | ||||
Partial evidence “SteelNet Sistemas es una compañía especializada en soluciones de eficiencia energética mediante proyectos de cerramientos de pasillos fríos y calientes en Centro de Datos.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: AI data center builders. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names AI data center builders.
- Partial evidence
- Its own public description names part of AI data center builders, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name AI data center builders. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 14 of 37 AI data center builders based in Spain
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AI data center builders based in Spain at a glance
As of Sep 19, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Spain, so it is reported there. Company counts and contact totals on this page are exact for Spain, over 37 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among AI data center builders, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Spain whose own description of what they do matches “AI data center builders”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names AI data center builders), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among AI data center builders, and records with no verified work email. Companies headquartered outside Spain are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 146 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names AI data center builders, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many AI data center builders are there based in Spain?
RevenueBase identified 37 AI data center builders headquartered in Spain as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Submer, headquartered in Rubi, tops this list with the largest team on record.
Which city has the most AI data center builders?
Madrid leads with 18 headquartered companies, followed by Barcelona (3) and Murcia (2).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 146 verified decision-maker contacts tracked across these 37 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.