Company lists · Data refreshed September 2026

Top 25 Offshore wind maintenance companies based in Spain

RevenueBase identified 82 offshore wind maintenance companies headquartered in Spain as of September 2026 and tracks 2,640 professional contacts across them, including 260 with verified work emails. Madrid is the largest hub.

This list covers offshore wind maintenance companies 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 20, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review
82Companies
2,640Contacts tracked
260Verified emails
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The 25 largest offshore wind maintenance companies based in Spain

Ranked by team size
Top 25 of 82 offshore wind maintenance companies based in Spain, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to offshore wind maintenance companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidencePamplona, SpainHQ checked Sep 20, 2026501-1,000441 contacts →

Indirect evidence

“TETRACE es un Grupo Empresarial dedicado a ingeniería, construcción y mantenimiento de activos renovables, constituido en 2010.”

Source: RevenueBase Database · checked Sep 20, 2026
2Indirect evidenceMadrid, SpainHQ checked Sep 20, 2026501-1,000292 contacts →

Indirect evidence

“Empresa de referencia del Grupo Cobra especializada en diseño, ingeniería, instalaciones y montajes mecánicos y eléctricos y mantenimiento industrial.”

Source: RevenueBase Database · checked Sep 20, 2026
3Indirect evidenceHuarte, SpainHQ checked Sep 20, 202651-200199 contacts →

Indirect evidence

“Somos una compañía especializada en instalación y mantenimiento de aerogeneradores, plantas fotovoltáicas e instalaciones eléctricas en edificios y plantas industriales.”

Source: RevenueBase Database · checked Sep 20, 2026
4Indirect evidenceValladolid, SpainHQ checked Sep 20, 2026201-500150 contacts →

Indirect evidence

“Altertec es una empresa líder de mantenimiento integral del sector eólico que nace en 2004 con el objetivo de dar respuestas a las necesidades del sector.”

Source: RevenueBase Database · checked Sep 20, 2026
5Partial evidenceLas Palmas Of Gran Canaria, SpainHQ checked Sep 20, 2026201-500111 contacts →

Partial evidence

“Astilleros Canarios S.A.(Astican) is a leading privately owned ship repair yard, offering comprehensive repair, maintenance, and conversion services for all types of vessels…”

Source: RevenueBase Database · checked Sep 20, 2026
6Indirect evidenceCárcar, SpainHQ checked Sep 20, 202651-200110 contacts →

Indirect evidence

“Somos una compañía especializada en el mantenimiento de aerogeneradores con una experiencia de casi 20 años trabajando en el sector”.”

Source: RevenueBase Database · checked Sep 20, 2026
7Indirect evidenceGijón, SpainHQ checked Sep 20, 2026201-50065 contacts →

Indirect evidence

“Asistencia Total en Mantenimiento España S.L.U.”

Source: RevenueBase Database · checked Sep 20, 2026
8Indirect evidenceNarón (a Coruña), SpainHQ checked Sep 20, 2026501-1,00054 contacts →

Indirect evidence

“Empresa Española Líder en la Fabricación de Estructuras Fijas y Flotantes para la Energía Eólica Marina”

Source: RevenueBase Database · checked Sep 20, 2026
9Indirect evidenceFerrol, SpainHQ checked Sep 20, 202651-20036 contacts →

Indirect evidence

“Fundada en 2007, Control Vertical S.”

Source: RevenueBase Database · checked Sep 20, 2026
10Indirect evidenceCaparroso, SpainHQ checked Sep 20, 202651-20035 contacts →

Indirect evidence

“Mas de 20 años de experiencia en el sector eólico.”

Source: RevenueBase Database · checked Sep 20, 2026
11Strong evidenceZamudio, SpainHQ checked Sep 20, 2026501-1,00031 contacts →

Strong evidence

“Adwen is a leading player in the offshore wind industry, with more than 600 MW installed at sea and close to 2 GW in the pipeline.”

Source: RevenueBase Database · checked Sep 20, 2026
12Indirect evidenceLos Barrios, SpainHQ checked Sep 20, 202651-20030 contacts →

Indirect evidence

“Blay Marine Tech SL offers technical marine services and ship repairs as well as auxiliary services for the maritime industry in Spain.”

Source: RevenueBase Database · checked Sep 20, 2026
13Indirect evidenceMazagón, SpainHQ checked Sep 20, 202611-5030 contacts →

Indirect evidence

“AMADESAM S.L is a maritime service company based out of Mazagón-Huelva, Spain.”

Source: RevenueBase Database · checked Sep 20, 2026
14Indirect evidenceMiñano, SpainHQ checked Sep 20, 202611-5023 contacts →

Indirect evidence

“Aeroblade (part of Aernnova group.”

Source: RevenueBase Database · checked Sep 20, 2026
15Indirect evidenceCádiz, SpainHQ checked Sep 20, 202611-5022 contacts →

Indirect evidence

“Naval Sector - Ship berths and moorings- Crane Service- Assembly and disassembly of scaffolding (Layher system)- Ship cleaning- Maneuvers of large tonnage parts (change of axles…”

Source: RevenueBase Database · checked Sep 20, 2026
16Indirect evidenceSantiago De Compostela, SpainHQ checked Sep 20, 202651-20021 contacts →

Indirect evidence

“En IM FutuRe ofrecemos servicios especializados en el mantenimiento preventivo, correctivo, gran correctivo, operación y administración de Parques Eólicos.”

Source: RevenueBase Database · checked Sep 20, 2026
17Indirect evidenceA Coruña, SpainHQ checked Sep 20, 202611-5012 contacts →

Indirect evidence

“GARLO started its journey in 2011 to cover the needs of our customers by supplying truck mounted platforms with operator and repairing blades.”

Source: RevenueBase Database · checked Sep 20, 2026
18Partial evidenceSanta Cruz De Tenerife, SpainHQ checked Sep 20, 202611-5011 contacts →

Partial evidence

“At Hidramar International we help to avoid downtimes to our clients providing cost-effective and safe high-quality assets maintenance in the Atlantic Ocean while they keep…”

Source: RevenueBase Database · checked Sep 20, 2026
19Strong evidencePamplona, SpainHQ checked Sep 20, 202611-5011 contacts →

Strong evidence

Wind Turbines Maintenance, Engineering and Consulting”

Source: RevenueBase Database · checked Sep 20, 2026
20Indirect evidenceHernani, SpainHQ checked Sep 20, 202611-509 contacts →

Indirect evidence

“Renovación de generadores eólicos y sus componentes.”

Source: RevenueBase Database · checked Sep 20, 2026
21Indirect evidenceMadrid, SpainHQ checked Sep 20, 202611-507 contacts →

Indirect evidence

“GUDNUS offer commissioning and O&M services to renewable energy projects.”

Source: RevenueBase Database · checked Sep 20, 2026
22Indirect evidenceAndratx, SpainHQ checked Sep 20, 20261-105 contacts →

Indirect evidence

“Tot Nautic es una empresa de mantenimiento de embarcaciones con base en Mallorca, operando en el sector náutico desde 1978.”

Source: RevenueBase Database · checked Sep 20, 2026
23Indirect evidencePamplona, SpainHQ checked Sep 20, 20261-104 contacts →

Indirect evidence

“G2Wind se dedica a la venta de repuestos y consumibles eólicos.”

Source: RevenueBase Database · checked Sep 20, 2026
24Indirect evidenceIbiza, SpainHQ checked Sep 20, 202611-502 contacts →

Indirect evidence

“Ibiza Yachting - Sunseeker Ibiza es la náutica más antigua de Ibiza.”

Source: RevenueBase Database · checked Sep 20, 2026
25Partial evidenceBarcelona, SpainHQ checked Sep 20, 20261-101 contacts →

Partial evidence

“Skyview Renewables helps wind turbine owners, operators, OEMs, and service providers solve complex drivetrain (gearbox) challenges.”

Source: RevenueBase Database · checked Sep 20, 2026

Showing 25 of 82 offshore wind maintenance companies based in Spain

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Offshore wind maintenance companies based in Spain at a glance

As of Sep 20, 2026
9.8%Verified-email coverage
32.2Average contacts per company
11-50Median size (employees)
9.8%Largest-city concentration · Madrid
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
20
11-50
34
51-200
16
201-500
6
501-1,000
5
1,001-5,000
1

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 82 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 offshore wind maintenance companies, 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 “offshore wind maintenance companies”. 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 offshore wind maintenance companies), 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 offshore wind maintenance companies, 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, 260 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 20, 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 offshore wind maintenance companies, 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 offshore wind maintenance companies are there based in Spain?

RevenueBase identified 82 offshore wind maintenance companies 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?

Tetrace, headquartered in Spain, tops this list with the largest team on record.

Which city has the most offshore wind maintenance companies?

Madrid leads with 8 headquartered companies, followed by Barcelona (3) and Gijon (3).

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 260 verified decision-maker contacts tracked across these 82 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 20, 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.