Company lists · Data refreshed September 2026
Top 25 Offshore wind maintenance companies worldwide
RevenueBase identified 1,972 offshore wind maintenance companies worldwide as of September 2026 and tracks 115,826 professional contacts across them, including 22,704 with verified work emails. The United Kingdom is the largest market and Singapore the largest hub.
This list covers offshore wind maintenance companies worldwide, 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. Country and city lists for offshore wind maintenance companies follow the table.
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 25 largest offshore wind maintenance companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 34,095 contacts → | ||||
Partial evidence “Saipem is a global leader in the engineering and construction of major projects for the energy and infrastructure sectors, both offshore and onshore.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 2,752 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 2,620 contacts → | ||||
Partial evidence “PEARCE from CBRE is the largest national independent provider of outsourced repair, maintenance, and engineering services to critical infrastructure in the renewable energy, power…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 2,554 contacts → | ||||
Partial evidence “Allseas is a world-leading contractor in the offshore energy market.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 2,392 contacts → | ||||
Indirect evidence “As a reliable global strategic partner in clean energy, Goldwind is committed Driving a Renewable Future and centering its business on Ecology-Oriented Development+ENERGY industry…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 2,312 contacts → | ||||
Partial evidence “Zamil Offshore Services Company has been offering diversified offshore and marine support services to the oil and gas industry since 1977.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 1,706 contacts → | ||||
Partial evidence “Helix Energy Solutions, headquartered in Houston, Texas, is an international offshore energy services company that provides specialty services to the offshore energy industry…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 1,438 contacts → | ||||
Strong evidence “Global Wind Service (GWS) is one of the largest companies in Europe offering onshore and offshore installation and servicing of wind turbines around the world.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 1,423 contacts → | ||||
Partial evidence “KK Wind Solutions is a dedicated greentech company with more than 35 years of experience in electrical systems for wind turbines.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 1,407 contacts → | ||||
Indirect evidence “With more than 50 years of legacy, Maersk Supply Service celebrates a new important milestone: from November 1st, our headquarters are officially located in Brazil.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 1,393 contacts → | ||||
Strong evidence “Muehlhan Wind Service is a leading full-scope independent service provider delivering wind turbine installation and Operations & Maintenance solutions to wind energy clients in…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 1,375 contacts → | ||||
Indirect evidence “DeepOcean is a technology-driven, independent solution provider in the ocean space.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 1,252 contacts → | ||||
Strong evidence “FairWind is a leading provider of one-stop solutions for the installation and service of onshore and offshore wind turbines throughout the world, having worked in more than 40…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 751 contacts → | ||||
Indirect evidence “ESVAGT was founded in 1981 with the purpose of making the sea a safe place to work.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 750 contacts → | ||||
Strong evidence “Cadeler is a pure-play offshore wind installation partner and the global leader in turbine transport and installation, operating the world’s largest fleet of heavy-lift jack-up…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 640 contacts → | ||||
Partial evidence “Flex Wind began as a company focused on wind turbine installation.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 587 contacts → | ||||
Indirect evidence “RENOM describes itself as the India's first independent service provider, handling MW-class turbines and providing comprehensive O&M services.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 564 contacts → | ||||
Partial evidence “Advanced diagnosis of faults of the whole type of electrical systems Commissioning of wind turbines Troubleshooting during the different lifetime periods of wind turbines…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 512 contacts → | ||||
Indirect evidence “GMS operates a modern fleet of highly versatile self-propelled lift boats, across international markets.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 501 contacts → | ||||
Partial evidence “Island Offshore - The Island Offshore Group is a leading provider of services to the offshore industry ranging from Platform Supply, Walk-to-work and Anchor Handling to Advanced…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 488 contacts → | ||||
Strong evidence “Leading global renewable energy inspection, repair and maintenance service provider for wind turbine manufacturers and wind farm owners, providing services and expertise to all…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 462 contacts → | ||||
Strong evidence “We are unlocking the full potential of offshore wind to power the world.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 441 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, 2026Thanks. The Data Team will review it. | |||||
| 24 | 440 contacts → | ||||
Strong evidence “GEV Wind Power is the global leading wind turbine maintenance & repair specialist.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 437 contacts → | ||||
Partial evidence “In 26 years, the power of wind has never ceased to fascinate us.” Source: RevenueBase Database · checked Sep 20, 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: offshore wind maintenance companies. 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 offshore wind maintenance companies.
- Partial evidence
- Its own public description names part of offshore wind maintenance companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name offshore wind maintenance companies. 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 25 of 1,972 offshore wind maintenance companies worldwide
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Offshore wind maintenance companies worldwide at a glance
As of Sep 20, 2026Companies by employee count
Email recency is reported on each country list linked below.
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.
- Coverage
- Every country. Country and city lists for offshore wind maintenance companies are linked below.
- What qualifies
- Companies worldwide 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.
- 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, 22,704 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.
Offshore wind maintenance companies by location
16 lists · largest firstEvery Offshore wind maintenance companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Offshore wind maintenance companies based in the United Kingdom212
- Offshore wind maintenance companies based in the United States167
- Offshore wind maintenance companies based in Germany127
- Offshore wind maintenance companies based in Brazil110
- Offshore wind maintenance companies based in the Netherlands108
- Offshore wind maintenance companies based in Denmark85
- Offshore wind maintenance companies based in Spain82
- Offshore wind maintenance companies based in Türkiye66
- Offshore wind maintenance companies based in France63
- Offshore wind maintenance companies based in India59
- Offshore wind maintenance companies based in Norway58
- Offshore wind maintenance companies based in Poland55
- Offshore wind maintenance companies based in Italy52
- Offshore wind maintenance companies based in the United Arab Emirates43
- Offshore wind maintenance companies based in Canada31
- Offshore wind maintenance companies based in Australia29
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 worldwide?
RevenueBase identified 1,972 offshore wind maintenance companies worldwide 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?
Saipem, headquartered in Milan, tops this list with the largest team on record.
Which country has the most offshore wind maintenance companies?
The United Kingdom leads with 212 companies, followed by the United States (167) and Germany (127). Every offshore wind maintenance companies list by country and city is linked on this page.
Which city has the most offshore wind maintenance companies?
Singapore leads with 35 headquartered companies, followed by Houston (24) and Istanbul (23).
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 22,704 verified decision-maker contacts tracked across these 1,972 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.