Company lists · Data refreshed October 2026

Top 25 Marine renewable energy firms worldwide

RevenueBase identified 1,657 company matches for marine renewable energy firms worldwide as of October 2026 and tracks 108,646 professional contacts across them, including 33,910 with verified work emails. The United Kingdom is the largest market and London the largest hub.

This list covers company matches for marine renewable energy firms worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 18, 2026. Country and city lists for marine renewable energy firms follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Oct 18, 2026 How this list was built
1,657Companies
108,646Contacts tracked
33,910Verified emails
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The 25 largest marine renewable energy firms worldwide

Ranked by team size
Top 25 of 1,657 company matches for marine renewable energy firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 18, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Oct 18, 202610001+13,098 contacts →

Exact match

“Subsea7 makes offshore energy transition possible through the continuous evolution of lower-carbon oil and gas and by enabling the growth of renewables and emerging energy.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
2Exact matchEssen, GermanyHQ recorded Oct 18, 202610001+11,410 contacts →

Exact match

“RWE is leading the way to a modern energy world.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
3Exact matchFredericia, United StatesHQ recorded Oct 18, 20265,001-10,0007,263 contacts →

Exact match

“Ørsted is the global leader in offshore wind power and is one of the largest renewable energy companies in the world.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
4Exact matchRome, ItalyHQ recorded Oct 18, 20265,001-10,0004,769 contacts →

Exact match

“We are the Enel Group company dedicated to the development and management of renewable energy generation worldwide.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
5Exact matchBeveren-kruibeke-zwijndrecht, BelgiumHQ recorded Oct 18, 20265,001-10,0004,648 contacts →

Exact match

“DEME (Euronext Brussels: DEME) is a leading contractor in the fields of offshore energy, dredging and marine infrastructure, and environmental remediation.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
6Exact matchKings Langley, United KingdomHQ recorded Oct 18, 20261,001-5,0003,875 contacts →

Exact match

“RES is the world’s largest independent renewable energy company, working across 24 countries and active in wind, solar, energy storage, green hydrogen, transmission, and…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
7Exact matchUnited StatesHQ recorded Oct 18, 20261,001-5,0002,637 contacts →

Exact match

“Adani Green Energy Limited (AGEL) is India’s largest renewable energy company playing a vital role in enabling the clean energy transition.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
8Exact matchHyderabad, IndiaHQ recorded Oct 18, 20261,001-5,0002,621 contacts →

Exact match

“Greenko, is one of the World’s leading Energy Transition and Decarbonization solutions company, with an installed Renewable Energy capacity of ~7.5 GW across Wind, Solar and Hydro…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
9Exact matchEsbjerg, DenmarkHQ recorded Oct 18, 20261,001-5,0002,051 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
10Exact matchPerth, United KingdomHQ recorded Oct 18, 20261,001-5,0001,643 contacts →

Exact match

“SSE Renewables is a leading developer and operator of renewable energy generation, headquartered in the UK and Ireland, with a growing presence internationally.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
11Exact matchParis, FranceHQ recorded Oct 18, 20261,001-5,0001,289 contacts →

Exact match

“Voltalia is an international player in renewable energies.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
12Exact matchOslo, NorwayHQ recorded Oct 18, 2026501-1,0001,236 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Oct 18, 20261,001-5,0001,116 contacts →

Exact match

“Lightsource bp is working to support a future powered by renewable, affordable and reliable energy that benefits our partners, people and planet.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
14Exact matchSao Paulo, BrazilHQ recorded Oct 18, 2026501-1,0001,043 contacts →

Exact match

“Na CTG Brasil, trabalhamos por um único propósito: desenvolver o mundo com energia limpa em larga escala.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
15Exact matchSpain, United StatesHQ recorded Oct 18, 2026501-1,000936 contacts →

Exact match

“At Zelestra, we are on a mission to change the world by making decarbonization a reality for our partners.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
16Exact matchSingaporeHQ recorded Oct 18, 20261,001-5,000918 contacts →

Exact match

“We are a leading provider of integrated marine solutions driving the global transformation to sustainable energy by delivering impact where it matters.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
17Exact matchCopenhagen V, DenmarkHQ recorded Oct 18, 20261,001-5,000867 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
18Exact matchKingsey Falls, QC, CanadaHQ recorded Oct 18, 2026501-1,000830 contacts →

Exact match

“At Boralex, we have been providing affordable renewable energy accessible to everyone for over 30 years.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
19Exact matchWiesbaden, GermanyHQ recorded Oct 18, 20261,001-5,000767 contacts →

Exact match

“Founded in 1996, ABO Energy (fomerly known as ABO Wind) is among Europe’s leading developers of renewable energy projects.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
20Exact matchWörrstadt, GermanyHQ recorded Oct 18, 20261,001-5,000751 contacts →

Exact match

“For 30 years, we have been one of the leading specialists in renewable energies, offering complete project development and other services related to the planning, construction…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
21Exact matchSøborg, DenmarkHQ recorded Oct 18, 2026501-1,000735 contacts →

Exact match

“European Energy develops, finances, constructs and operates onshore and offshore wind and solar farms, Power-to-X facilities and Battery Energy Storage Systems.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
22Exact matchDubai, United Arab EmiratesHQ recorded Oct 18, 20261,001-5,000714 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
23Exact matchGenoa, ItalyHQ recorded Oct 18, 2026501-1,000641 contacts →

Exact match

“We are a leading independent operator of clean energy from renewable sources, operating in nine European countries and in the United States.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
24Exact matchNavan Road, IrelandHQ recorded Oct 18, 2026201-500620 contacts →

Exact match

“Energia Group is proud to be the longest supplier of 100% green electricity on the island of Ireland.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
25Exact matchMadrid, SpainHQ recorded Oct 18, 2026501-1,000611 contacts →

Exact match

“Ocean Winds (OW) is an international company dedicated to offshore wind, leading a new era of clean energy by turning ocean winds into power that lights up homes, businesses, and…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase

Showing 25 of 1,657 marine renewable energy firms worldwide

See the full list, filter by size, metro and specialty, and access 33,910 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Marine renewable energy firms worldwide at a glance

As of Oct 18, 2026
31.2%Verified-email coverage
65.6Average contacts per company
11-50Median size (employees)
4.2%Largest-city concentration · London
Oct 18, 2026Page data refreshed

Companies by employee count

1-10
744
11-50
552
51-200
204
201-500
60
501-1,000
42
1,001-5,000
35
5,001-10,000
9
10001+
5

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for marine renewable energy firms are linked below.
What qualifies
Company records worldwide whose business descriptions match “marine renewable energy firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 33,910 professional contacts with verified work emails across the full matched dataset. 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 October 18, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Marine renewable energy firms by location

15 lists · largest first

Every Marine renewable energy firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “marine renewable energy firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many marine renewable energy firms are there worldwide?

RevenueBase identified 1,657 company matches for marine renewable energy firms worldwide as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Subsea7 tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most marine renewable energy firms?

The United Kingdom leads with 332 companies, followed by the United States (171) and France (84). Every marine renewable energy firms list by country and city is linked on this page.

Which city has the most marine renewable energy firms?

London leads with 70 company records, followed by Singapore (31) and Edinburgh (26).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 33,910 professional contacts with verified work emails tracked across these 1,657 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 18, 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 SmartSearch, 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.