Company lists · Data refreshed September 2026

Top 25 Offshore wind installation contractors based in Norway

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 75 companies tracked

RevenueBase identified 75 offshore wind installation contractors headquartered in Norway as of September 2026 and tracks 3,459 professional contacts across them, including 1,197 with verified work emails. Oslo is the largest hub.

This list covers offshore wind installation contractors headquartered in Norway, 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.

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

75Companies

3,459Contacts tracked

1,197Verified emails

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The 25 largest offshore wind installation contractors based in Norway

Ranked by team size

Top 25 of 75 offshore wind installation contractors based in Norway, 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	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
2	Global Maritime	Partial evidence	Stavanger, NorwayHQ checked Sep 17, 2026	201-500	472 contacts →
	Partial evidence “Global Maritime delivers integrated marine solutions for a changing offshore world.” Source: RevenueBase Database · checked Sep 17, 2026
3	Ocean Installer	Strong evidence	Stavanger, NorwayHQ checked Sep 17, 2026	201-500	299 contacts →
	Strong evidence “Ocean Installer is a leading marine construction company that specializes in offshore installation services with more than 15 years of experience delivering large and complex…” Source: RevenueBase Database · checked Sep 17, 2026
4	Fred. Olsen Windcarrier	Indirect evidence	Oslo, NorwayHQ checked Sep 17, 2026	51-200	234 contacts →
	Indirect evidence “Fred.” Source: RevenueBase Database · checked Sep 17, 2026
5	Edda Wind	Partial evidence	Haugesund, NorwayHQ checked Sep 17, 2026	51-200	137 contacts →
	Partial evidence “Edda Wind has been dissolved and is no longer operating as of May 2026.” Source: RevenueBase Database · checked Sep 17, 2026
6	Integrated Wind Solutions ASA	Strong evidence	Oslo, NorwayHQ checked Sep 17, 2026	11-50	119 contacts →
	Strong evidence “Integrated Wind Solutions ASA aims to become a leading integrated provider of offshore wind services.” Source: RevenueBase Database · checked Sep 17, 2026
7	Havfram	Strong evidence	Oslo, NorwayHQ checked Sep 17, 2026	51-200	88 contacts →
	Strong evidence “Havfram is a pure play offshore wind company, providing transport and installation services to the offshore wind sector as an owner and operator of Wind Turbine Installation…” Source: RevenueBase Database · checked Sep 17, 2026
8	Norwind Offshore	Strong evidence	Ålesund, NorwayHQ checked Sep 17, 2026	11-50	81 contacts →
	Strong evidence “Purpose-built vessels, designed specifically for advanced maritime operations in the development and service of the offshore wind market.” Source: RevenueBase Database · checked Sep 17, 2026
9	Moss Maritime	Partial evidence	Lysaker, NorwayHQ checked Sep 17, 2026	51-200	65 contacts →
	Partial evidence “Moss Maritime provides leading technology and expertise within design and engineering services to the offshore energy sector as well as other ocean-based sectors.” Source: RevenueBase Database · checked Sep 17, 2026
10	Vårgrønn	Strong evidence	Stavanger, NorwayHQ checked Sep 17, 2026	11-50	56 contacts →
	Strong evidence “Vårgrønn is an agile, Norway-based offshore wind company powering the energy transition through development, construction, operation, and ownership of offshore wind energy and…” Source: RevenueBase Database · checked Sep 17, 2026
11	Semar AS	Partial evidence	Lysaker, NorwayHQ checked Sep 17, 2026	11-50	52 contacts →
	Partial evidence “Semar was founded in 1980 as an independent engineering consultant firm devoted primarily to the offshore oil and gas industry.” Source: RevenueBase Database · checked Sep 17, 2026
12	Subseadesign AS	Indirect evidence	Lierbyen, NorwayHQ checked Sep 17, 2026	51-200	47 contacts →
	Indirect evidence “SubseaDesign (SD) is an engineering, design and fabrication company providing equipment and services for the oil and gas industry.” Source: RevenueBase Database · checked Sep 17, 2026
13	Inocean	Indirect evidence	Sentrum, NorwayHQ checked Sep 17, 2026	51-200	29 contacts →
	Indirect evidence “Inocean delivers design, engineering- and project management services, and cover Oil & Gas as well as the Renewable Industry.” Source: RevenueBase Database · checked Sep 17, 2026
14	Deep Wind Offshore	Strong evidence	Haugesund, NorwayHQ checked Sep 17, 2026	11-50	28 contacts →
	Strong evidence “Deep Wind Offshore skal utvikle og generere fornybar energi, og vi har eiere som ønsker vekst i sektoren.” Source: RevenueBase Database · checked Sep 17, 2026
15	Kongstein	Indirect evidence	Bergen, NorwayHQ checked Sep 17, 2026	11-50	26 contacts →
	Indirect evidence “WHO are we?” Source: RevenueBase Database · checked Sep 17, 2026
16	Aquastructures AS	Indirect evidence	Trondheim, NorwayHQ checked Sep 17, 2026	11-50	23 contacts →
	Indirect evidence “Aquastructures is recognized and acknowledged as an innovative and leading engineering house, establishing long term client relations, finding viable and sustainable technical…” Source: RevenueBase Database · checked Sep 17, 2026
17	Noble Installation AS	Strong evidence	Rudskogen, NorwayHQ checked Sep 17, 2026	51-200	23 contacts →
	Strong evidence “Om NOBLE INSTALLATION AS: Heleid datterselskap av Noble AS, etablert i Vår virksomhet er innenfor marine operasjoner, offshore installasjon, mekanisk montasje og produksjon.” Source: RevenueBase Database · checked Sep 17, 2026
18	Kvenna	Indirect evidence	Ålesund, NorwayHQ checked Sep 17, 2026	11-50	21 contacts →
	Indirect evidence “Kvenna is located in the beautiful city of Aalesund, Norway.” Source: RevenueBase Database · checked Sep 17, 2026
19	Fram Marine AS	Indirect evidence	Skøyen, NorwayHQ checked Sep 17, 2026	11-50	20 contacts →
	Indirect evidence “By combining years of experience in Project Execution and Management with Technical and Operational expertise in Marine, Energy and Renewable industry, Fram Marine is dedicated to…” Source: RevenueBase Database · checked Sep 17, 2026
20	Norwegian Offshore Wind	Strong evidence	Haugesund, NorwayHQ checked Sep 17, 2026	11-50	18 contacts →
	Strong evidence “Norwegian offshore wind is the largest representative offshore wind body in Norway with the overall mission to develop world leading supply chains within floating wind.” Source: RevenueBase Database · checked Sep 17, 2026
21	Windstaller Alliance AS	Partial evidence	Lysaker, NorwayHQ checked Sep 17, 2026	n/a	16 contacts →
	Partial evidence “Windstaller Alliance is combining the expertise of three offshore industry leaders to deliver an integrated and highly flexible offering of products, fabrication services, subsea…” Source: RevenueBase Database · checked Sep 17, 2026
22	NEDIG	Indirect evidence	Arendal, NorwayHQ checked Sep 17, 2026	51-200	16 contacts →
	Indirect evidence “Nedig er et elektroinstallasjonsfirma med over 60 ansatte, som er lokalisert i Arendal.” Source: RevenueBase Database · checked Sep 17, 2026
23	Hyndla	Partial evidence	Flekkefjord, NorwayHQ checked Sep 17, 2026	11-50	14 contacts →
	Partial evidence “Hyndla is a part of Procon Wind Energy.” Source: RevenueBase Database · checked Sep 17, 2026
24	Meventus	Partial evidence	Kristiansand, NorwayHQ checked Sep 17, 2026	1-10	8 contacts →
	Partial evidence “Meventus is a renewable energy consultant and service company with offices in Norway and Sweden delivering services spanning the entire wind power project life cycle to customers…” Source: RevenueBase Database · checked Sep 17, 2026
25	Axess Industries	Indirect evidence	Bergen, NorwayHQ checked Sep 17, 2026	11-50	3 contacts →
	Indirect evidence “Lifting and material handling solutions” 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 75 offshore wind installation contractors based in Norway

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Offshore wind installation contractors based in Norway at a glance

As of Sep 17, 2026

34.6%Verified-email coverage

46.1Average contacts per company

11-50Median size (employees)

25.3%Largest-city concentration · Oslo

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

5,001-10,000

Email recency for this list is measured worldwide rather than for Norway, so it is reported there. Company counts and contact totals on this page are exact for Norway, over 75 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 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.
What qualifies: Companies headquartered in Norway 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. Companies headquartered outside Norway 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, 1,197 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.

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 based in Norway?

RevenueBase identified 75 offshore wind installation contractors headquartered in Norway 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?

Seaway7, headquartered in Oslo, tops this list with the largest team on record.

Which city has the most offshore wind installation contractors?

Oslo leads with 19 headquartered companies, followed by Stavanger (5) and Bergen (4).

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 1,197 verified decision-maker contacts tracked across these 75 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.

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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.