Company lists · Data refreshed September 2026

Top 25 Offshore power generation based in the United Kingdom

Name: Offshore power generation based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 221 companies tracked

RevenueBase identified 221 offshore power generation headquartered in the United Kingdom as of September 2026 and tracks 27,016 professional contacts across them, including 9,885 with verified work emails. London is the largest hub.

This list covers offshore power generation 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 20, 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 20, 2026 86% judged on-target in blind review

221Companies

27,016Contacts tracked

9,885Verified emails

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

The 25 largest offshore power generation based in the United Kingdom

Ranked by team size

Top 25 of 221 offshore power generation based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to offshore power generation: 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	Subsea7	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	10001+	12,645 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 20, 2026
2	RES	Indirect evidence	Kings Langley, United KingdomHQ checked Sep 20, 2026	1,001-5,000	3,721 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 20, 2026
3	SSE Renewables	Partial evidence	Perth, United KingdomHQ checked Sep 20, 2026	1,001-5,000	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 20, 2026
4	Lightsource BP	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	1,001-5,000	1,114 contacts →
	Indirect evidence “Lightsource bp is working to support a future powered by renewable, affordable and reliable energy that benefits our partners, people and planet.” Source: RevenueBase Database · checked Sep 20, 2026
5	Altera Infrastructure	Partial evidence	Aberdeenshire, United KingdomHQ checked Sep 20, 2026	501-1,000	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 20, 2026
6	Sonnedix	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	501-1,000	563 contacts →
	Indirect evidence “Sonnedix is a global renewable energy company delivering 100% clean electricity directly to customers through a diversified portfolio of solar, wind, and storage assets.” Source: RevenueBase Database · checked Sep 20, 2026
7	Cubico Sustainable Investments	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	501-1,000	406 contacts →
	Indirect evidence “Cubico Sustainable Investments is one of the world’s largest privately-owned renewable energy companies, leveraging our strong local presence with a unique combination of in-house…” Source: RevenueBase Database · checked Sep 20, 2026
8	VPI	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	201-500	214 contacts →
	Partial evidence “With a capacity of 3.5GW, we are one of the leading power companies in the UK and Ireland.” Source: RevenueBase Database · checked Sep 20, 2026
9	OWC	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	51-200	185 contacts →
	Indirect evidence “The Renewable Energy Consultants.” Source: RevenueBase Database · checked Sep 20, 2026
10	Wood Thilsted	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	51-200	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 20, 2026
11	Flotation Energy	Partial evidence	Edinburgh, United KingdomHQ checked Sep 20, 2026	51-200	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 20, 2026
12	British Solar Renewables	Indirect evidence	Shepton Mallet, United KingdomHQ checked Sep 20, 2026	51-200	148 contacts →
	Indirect evidence “Clean energy, powered with purpose.” Source: RevenueBase Database · checked Sep 20, 2026
13	EDF Renewables UK & Ireland	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	501-1,000	117 contacts →
	Indirect evidence “EDF Renewables is part of one of the world’s leading renewable energy companies in the UK.” Source: RevenueBase Database · checked Sep 20, 2026
14	Econergy Renewable Energy LTD	Strong evidence	London, United KingdomHQ checked Sep 20, 2026	51-200	112 contacts →
	Strong evidence “Our Vision Renewable energy will be the source of power for future generations.” Source: RevenueBase Database · checked Sep 20, 2026
15	Innogy Renewables UK	Indirect evidence	Swindon, United KingdomHQ checked Sep 20, 2026	501-1,000	94 contacts →
	Indirect 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 20, 2026
16	Onpath Energy	Partial evidence	Houghton-le-spring, United KingdomHQ checked Sep 20, 2026	51-200	76 contacts →
	Partial evidence “OnPath Energy is the UK’s leading land-based renewable energy developer with more than 3 GW of renewable energy generation and electricity storage in the pipeline.” Source: RevenueBase Database · checked Sep 20, 2026
17	Enviromena	Partial evidence	Reading, United KingdomHQ checked Sep 20, 2026	51-200	75 contacts →
	Partial evidence “Enviromena is an independent power producer operating across the UK and Europe.” Source: RevenueBase Database · checked Sep 20, 2026
18	Emec European Marine Energy Centre	Indirect evidence	Stromness, United KingdomHQ checked Sep 20, 2026	51-200	69 contacts →
	Indirect 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 20, 2026
19	ABLE	Indirect evidence	Billingham, United KingdomHQ checked Sep 20, 2026	201-500	69 contacts →
	Indirect evidence “ABLE is a leading Land Developer of acres with acres of prime consented land available with 3GW+ electric capacity, ideal for Renewable Energy, AI Data Centres or Industrial Use.” Source: RevenueBase Database · checked Sep 20, 2026
20	RED Rock Renewables	Indirect evidence	Edinburgh, United KingdomHQ checked Sep 20, 2026	51-200	65 contacts →
	Indirect evidence “Red Rock Renewables is an investor, owner, operator and developer of renewable energy projects.” Source: RevenueBase Database · checked Sep 20, 2026
21	Nexta Capital Partners	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	51-200	65 contacts →
	Indirect evidence “Nexta Capital Partners is a holding company which originates, develops, finances builds and operates renewable infrastructure assets.” Source: RevenueBase Database · checked Sep 20, 2026
22	NNG Offshore Wind	Partial evidence	Edinburgh, United KingdomHQ checked Sep 20, 2026	n/a	51 contacts →
	Partial 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 20, 2026
23	Haventus	Partial evidence	Ardersier, United KingdomHQ checked Sep 20, 2026	51-200	48 contacts →
	Partial evidence “Haventus is an energy transition facilities provider, offering pivotal infrastructure for the offshore wind industry.” Source: RevenueBase Database · checked Sep 20, 2026
24	Outer Dowsing Offshore Wind	Partial evidence	1.5 Gw Fully Consented Wind Farm With 2030 Connection Date, United KingdomHQ checked Sep 20, 2026	11-50	46 contacts →
	Partial evidence “Outer Dowsing Offshore Wind is a 1.5GW project located approximately 54km off the Lincolnshire coast.” Source: RevenueBase Database · checked Sep 20, 2026
25	Belltown Power	Partial evidence	Bristol, United KingdomHQ checked Sep 20, 2026	11-50	40 contacts →
	Partial evidence “Belltown Power is an international renewable energy company (IPP).” Source: RevenueBase Database · checked Sep 20, 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 power generation. 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 power generation.
Partial evidence: Its own public description names part of offshore power generation, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name offshore power generation. 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 221 offshore power generation based in the United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 9,885 reachable decision-makers.

Free signup · no credit card

View the full list →

Offshore power generation based in the United Kingdom at a glance

As of Sep 20, 2026

36.6%Verified-email coverage

122.2Average contacts per company

11-50Median size (employees)

27.1%Largest-city concentration · London

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 221 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 power generation, 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 “offshore power generation”. 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 power generation), 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 power generation, 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, 9,885 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 power generation by metro

Offshore power generation in London60

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 power generation, 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 power generation are there based in the United Kingdom?

RevenueBase identified 221 offshore power generation 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?

Subsea7, headquartered in London, tops this list with the largest team on record.

Which city has the most offshore power generation?

London leads with 60 headquartered companies, followed by Edinburgh (23) and Aberdeen (8).

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 9,885 verified decision-maker contacts tracked across these 221 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.

Ready to reach these companies? Verified emails and direct dials for all 221 offshore power generation based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Offshore power generation by geography

Browse the directory

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.