Company lists · Data refreshed September 2026
Top 25 Marine energy companies based in the United Kingdom
RevenueBase identified 219 marine energy companies headquartered in the United Kingdom as of September 2026 and tracks 6,788 professional contacts across them, including 1,517 with verified work emails. London is the largest hub.
This list covers marine energy companies headquartered in the United Kingdom, 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.
The 25 largest marine energy companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,900 contacts → | ||||
Partial evidence “SSE Renewables is a leading developer and operator of renewable energy generation, headquartered in the UK and Ireland, with a growing presence internationally.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 2 | 955 contacts → | ||||
Partial evidence “Altera Infrastructure is a leading global energy infrastructure services group focused on the ownership and operation of offshore energy assets.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 3 | 185 contacts → | ||||
Partial evidence “The Renewable Energy Consultants.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 4 | 175 contacts → | ||||
Partial evidence “Wood Thilsted is a world-leading renewable energy engineering consultancy experienced and specialised in offshore wind.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 5 | 171 contacts → | ||||
Partial evidence “Osbit’s vision is to unlock a clean energy future by creating smarter technology.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 6 | 154 contacts → | ||||
Partial evidence “Flotation Energy Ltd delivers clean, green, renewable energy by using our expertise in floating and fixed offshore wind and the energy transition, supporting achievement of…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 7 | 110 contacts → | ||||
Partial evidence “We furnish all-round solutions, including engineering, procurement, and construction in the full value chain of offshore wind and adjacent marine construction activities.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 8 | 94 contacts → | ||||
Partial evidence “Innogy Renewables UK Ltd is a leading business in the drive to generate more electricity from low carbon, inexhaustable domestic energy sources.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 9 | 69 contacts → | ||||
Partial evidence “Established in 2003, EMEC is the world’s first and leading facility for demonstrating and testing wave and tidal energy converters – technologies that generate electricity by…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 10 | 55 contacts → | ||||
Indirect evidence “Mainprize Offshore Limited (formally Mainprize Trawling Co Ltd) was formed in 1979 and has operated in the North Sea for over thirty years.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 11 | 51 contacts → | ||||
Indirect evidence “The Neart na Gaoithe (NnG) offshore wind farm will be located 15.5 km off the Fife coast and covers an area of approximately 105 km2.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 12 | 49 contacts → | ||||
Indirect evidence “Inverlussa is one of the leading workboat operators in the aquaculture industry in Scotland and has experience in the offshore renewables industry.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 13 | 48 contacts → | ||||
Partial evidence “Verlume is a leader in intelligent energy management and storage technologies for the energy industry.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 14 | 48 contacts → | ||||
Partial evidence “Haventus is an energy transition facilities provider, offering pivotal infrastructure for the offshore wind industry.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 15 | 41 contacts → | ||||
Partial evidence “Spectrum specialises in the provision of combined marine survey and crew transfer vessel services to the offshore construction industry.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 16 | 39 contacts → | ||||
Partial evidence “Vantage RE Ltd (Vantage RE), a wholly owned subsidiary of Tenaga Nasional Berhad, has been established to own, develop, operate and manage a portfolio of renewable energy assets…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 17 | 39 contacts → | ||||
Indirect evidence “Reventus Power originates and invests in the development and long-term management of offshore wind projects globally.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 18 | 38 contacts → | ||||
Indirect evidence “Nova are specialists in floating solar EPC and consultancy.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 19 | 37 contacts → | ||||
Partial evidence “Keynvor Morlift Ltd is a UK-based marine contracting and consulting firm.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 20 | 37 contacts → | ||||
Partial evidence “EnBW Energie-Baden-Württemberg AG - the name reflects our roots and our commitment.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 21 | 36 contacts → | ||||
Partial evidence “Orbital Marine Power is an innovative Scottish engineering company focused on the development of a low-cost, predictable, scalable floating tidal stream technology.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 22 | 35 contacts → | ||||
Indirect evidence “Established in the UK in 1963 Fred.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 23 | 35 contacts → | ||||
Indirect evidence “We are experts in metocean, floating LiDAR seabed measurement, analyses and critical advice.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 24 | 32 contacts → | ||||
Partial evidence “Leask Marine provide an unprecedented range of uniquely developed processes and equipment to support the mobilisation, deployment, installation, commissioning, service and…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 25 | 30 contacts → | ||||
Partial evidence “Marine Power Systems’ core platform solution, PelaFlex, includes both hybrid and fully floating variants, designed to operate across a wide range of water depths.” Source: RevenueBase Database · checked Sep 17, 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: marine energy 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 marine energy companies.
- Partial evidence
- Its own public description names part of marine energy companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name marine energy 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 219 marine energy companies based in the United Kingdom
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Marine energy companies based in the United Kingdom at a glance
As of Sep 17, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 219 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 marine energy 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 the United Kingdom whose own description of what they do matches “marine energy 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 marine energy 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 marine energy companies, and records with no verified work email. Companies headquartered outside United Kingdom 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, 1,517 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.
Marine energy companies by metro
- Marine energy companies in London43
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 marine energy 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 marine energy companies are there based in the United Kingdom?
RevenueBase identified 219 marine energy companies headquartered in the United Kingdom 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?
SSE Renewables, headquartered in Perth, tops this list with the largest team on record.
Which city has the most marine energy companies?
London leads with 43 headquartered companies, followed by Edinburgh (19) and Aberdeen (10).
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 1,517 verified decision-maker contacts tracked across these 219 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.
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