Company lists · Data refreshed September 2026

Top 25 Offshore wind installation contractors worldwide

Name: Offshore wind installation contractors worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 1,133 companies tracked

RevenueBase identified 1,133 offshore wind installation contractors worldwide as of September 2026 and tracks 171,517 professional contacts across them, including 37,844 with verified work emails and 0 with mobile numbers. The United Kingdom is the largest market and London the largest hub.

This list covers offshore wind installation contractors 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 17, 2026. Country and city lists for offshore wind installation contractors 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

1,133Companies

171,517Contacts tracked

37,844Verified emails

0Mobile numbers

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest offshore wind installation contractors worldwide

Ranked by team size

Top 25 of 1,133 offshore wind installation contractors worldwide, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to offshore wind installation contractors: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Saipem	Partial evidence	Milan, ItalyHQ checked Sep 17, 2026	10001+	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 17, 2026
2	Vestas	Indirect evidence	Aarhus, DenmarkHQ checked Sep 17, 2026	10001+	27,085 contacts →
	Indirect evidence “Vestas is the energy industry’s global partner on sustainable energy solutions.” Source: RevenueBase Database · checked Sep 17, 2026
3	Mcdermott International, LTD	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	10001+	20,135 contacts →
	Indirect evidence “McDermott is a premier provider of engineering and construction solutions to the energy industry.” Source: RevenueBase Database · checked Sep 17, 2026
4	SBM Offshore	Partial evidence	Amsterdam, NetherlandsHQ checked Sep 17, 2026	5,001-10,000	8,478 contacts →
	Partial evidence “SBM Offshore is the world’s deepwater ocean-infrastructure expert.” Source: RevenueBase Database · checked Sep 17, 2026
5	Ørsted	Strong evidence	Fredericia, United StatesHQ checked Sep 17, 2026	5,001-10,000	7,538 contacts →
	Strong evidence “Ørsted is the global leader in offshore wind power and is one of the largest renewable energy companies in the world.” Source: RevenueBase Database · checked Sep 17, 2026
6	Lamprell	Strong evidence	Sharjah, United Arab EmiratesHQ checked Sep 17, 2026	5,001-10,000	6,080 contacts →
	Strong evidence “With 50 years of experience, Lamprell is a key player in the global offshore wind and oil & gas markets, delivering high-quality, complex energy infrastructure projects.” Source: RevenueBase Database · checked Sep 17, 2026
7	Enercon	Partial evidence	Aurich, GermanyHQ checked Sep 17, 2026	10001+	5,196 contacts →
	Partial evidence “ENERCON: Pioneer in wind energy technology, partner in the energy transition and attractive employer in a future-orientated industry.” Source: RevenueBase Database · checked Sep 17, 2026
8	FTI	Indirect evidence	Menasha, WI, United StatesHQ checked Sep 17, 2026	1,001-5,000	2,741 contacts →
	Indirect evidence “Faith Technologies Incorporated (FTI) is a dynamic organization comprised of construction, engineering, manufacturing and renewable energy experts.” Source: RevenueBase Database · checked Sep 17, 2026
9	Heerema Marine Contractors	Strong evidence	Leiden, NetherlandsHQ checked Sep 17, 2026	1,001-5,000	2,643 contacts →
	Strong evidence “Heerema Marine Contractors is a world-leading marine contractor in the international offshore energy industry.” Source: RevenueBase Database · checked Sep 17, 2026
10	Semco Maritime	Indirect evidence	Esbjerg, DenmarkHQ checked Sep 17, 2026	1,001-5,000	1,947 contacts →
	Indirect evidence “To fulfil the vision of a fossil-free future, we need conventional and renewable energy sources to coexist effectively until the day when renewables can fully keep the world…” Source: RevenueBase Database · checked Sep 17, 2026
11	Global Wind Service	Strong evidence	Fredericia, DenmarkHQ checked Sep 17, 2026	1,001-5,000	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 17, 2026
12	KK Wind Solutions	Partial evidence	Ikast, DenmarkHQ checked Sep 17, 2026	1,001-5,000	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 17, 2026
13	Muehlhan Wind Service	Strong evidence	Fredericia, DenmarkHQ checked Sep 17, 2026	1,001-5,000	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 17, 2026
14	Deepocean	Indirect evidence	Oslo, NorwayHQ checked Sep 17, 2026	1,001-5,000	1,375 contacts →
	Indirect evidence “DeepOcean is a technology-driven, independent solution provider in the ocean space.” Source: RevenueBase Database · checked Sep 17, 2026
15	Dragados Offshore	Partial evidence	11510 Puerto Real, SpainHQ checked Sep 17, 2026	1,001-5,000	1,348 contacts →
	Partial evidence “Founded in 1972, Dragados Offshore S.A.” Source: RevenueBase Database · checked Sep 17, 2026
16	Fairwind	Strong evidence	Vejle, DenmarkHQ checked Sep 17, 2026	1,001-5,000	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 17, 2026
17	Seaway7	Strong evidence	Oslo, NorwayHQ checked Sep 17, 2026	501-1,000	1,205 contacts →
	Strong evidence “Seaway7 Seaway7 is a global leader in the delivery of offshore wind projects, committed to contributing to an efficient and sustainable energy supply for the future.” Source: RevenueBase Database · checked Sep 17, 2026
18	Wanzek Construction, Inc., A Mastec Company	Partial evidence	Fargo, ND, United StatesHQ checked Sep 17, 2026	1,001-5,000	933 contacts →
	Partial evidence “Wanzek Construction, Inc, a MasTec Renewables company, is a leading general construction contractor and clean energy services company headquartered in Fargo, North Dakota.” Source: RevenueBase Database · checked Sep 17, 2026
19	Suzlon Wind Energy Corporation Sweco	Partial evidence	Chicago, IL, United StatesHQ checked Sep 17, 2026	201-500	910 contacts →
	Partial evidence “Suzlon established its North American operations – Suzlon Wind Energy Corporation - in 2001 with a vision to become the preferred provider of value-added sustainable power plant…” Source: RevenueBase Database · checked Sep 17, 2026
20	Esvagt A S	Indirect evidence	Esbjerg, DenmarkHQ checked Sep 17, 2026	1,001-5,000	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 17, 2026
21	Cadeler	Strong evidence	Copenhagen V, DenmarkHQ checked Sep 17, 2026	1,001-5,000	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 17, 2026
22	GES	Indirect evidence	Zamudio, SpainHQ checked Sep 17, 2026	501-1,000	702 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
23	Kuiper Group	Indirect evidence	Dubai, United Arab EmiratesHQ checked Sep 17, 2026	1,001-5,000	699 contacts →
	Indirect evidence “Kuiper Group, part of Oilmax Group, is a leading integrated manpower services provider supporting the global Oil & Gas industry since We enable critical energy operations through…” Source: RevenueBase Database · checked Sep 17, 2026
24	Flex Wind	Strong evidence	Vejle, DenmarkHQ checked Sep 17, 2026	501-1,000	640 contacts →
	Strong evidence “Flex Wind began as a company focused on wind turbine installation.” Source: RevenueBase Database · checked Sep 17, 2026
25	Unique Group	Indirect evidence	Sharjah, United Arab EmiratesHQ checked Sep 17, 2026	501-1,000	618 contacts →
	Indirect evidence “Unique Group is a leading specialist and integrated engineering solutions provider across the global subsea, renewables, oil and gas, and defence industries.” Source: RevenueBase Database · checked Sep 17, 2026

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 installation contractors. 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 installation contractors.
Partial evidence: Its own public description names part of offshore wind installation contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name offshore wind installation contractors. 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 1,133 offshore wind installation contractors worldwide

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 37,844 reachable decision-makers.

Free signup · no credit card

View the full list →

Offshore wind installation contractors worldwide at a glance

As of Sep 17, 2026

22.1%Verified-email coverage

151.4Average contacts per company

11-50Median size (employees)

3.4%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

404

11-50

374

51-200

203

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 installation contractors, 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: 12 countries, largest first: the United Kingdom, the United States, the Netherlands, Germany, Denmark, Spain, Norway, France, Poland, Australia and 2 more. Country and city lists for offshore wind installation contractors are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “offshore wind installation contractors”. 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 installation contractors), 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 installation contractors, 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, 37,844 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 17, 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 installation contractors by location

12 lists · largest first

Every Offshore wind installation contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 installation contractors, 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 installation contractors are there worldwide?

RevenueBase identified 1,133 offshore wind installation contractors 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 installation contractors?

The United Kingdom leads with 311 companies, followed by the United States (131) and the Netherlands (121). Every offshore wind installation contractors list by country and city is linked on this page.

Which city has the most offshore wind installation contractors?

London leads with 38 headquartered companies, followed by Hamburg (36) and Houston (26).

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 37,844 verified decision-maker contacts tracked across these 1,133 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 17, 2026.

Ready to reach these companies? Verified emails and direct dials for all 1,133 offshore wind installation contractors worldwide. Start with a free account, no credit card.

Download this list →

Related lists

Browse the directory

Browse: Companies home · Lists by location · New lists

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.