Company lists · Data refreshed October 2026

Top 25 Marine renewable energy firms based in London, United Kingdom

Name: Marine renewable energy firms based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 18, 2026 70 companies tracked

RevenueBase identified 70 company matches for marine renewable energy firms associated with London, United Kingdom as of October 2026 and tracks 17,035 professional contacts across them, including 6,837 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for marine renewable energy firms associated with London, United Kingdom, 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.

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

70Companies

17,035Contacts tracked

6,837Verified emails

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The 25 largest marine renewable energy firms based in London, United Kingdom

Ranked by team size

Top 25 of 70 company matches for marine renewable energy firms based in London, United Kingdom, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Subsea7	Exact match	London, United KingdomHQ recorded Oct 18, 2026	10001+	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
2	Lightsource BP	Exact match	London, United KingdomHQ recorded Oct 18, 2026	1,001-5,000	1,116 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
3	Sonnedix	Exact match	London, United KingdomHQ recorded Oct 18, 2026	501-1,000	593 contacts →
	Exact match “Sonnedix is a global renewable energy company delivering 100% clean electricity directly to customers through a diversified portfolio of solar, wind, and storage assets.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
4	Cubico Sustainable Investments	Exact match	London, United KingdomHQ recorded Oct 18, 2026	501-1,000	423 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
5	VPI	Exact match	London, United KingdomHQ recorded Oct 18, 2026	201-500	227 contacts →
	Exact match “With a capacity of 3.5GW, we are one of the leading power companies in the UK and Ireland.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
6	OWC	Exact match	London, United KingdomHQ recorded Oct 18, 2026	51-200	187 contacts →
	Exact match “The Renewable Energy Consultants.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
7	Octopus Energy Generation	Exact match	London, United KingdomHQ recorded Oct 18, 2026	201-500	167 contacts →
	Exact match “At Octopus Energy Generation, we’re building green power for the future, from large-scale solar to onshore and offshore wind, and innovative initiatives like the Fan Club.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
8	Wood Thilsted	Exact match	London, United KingdomHQ recorded Oct 18, 2026	51-200	166 contacts →
	Exact match “Wood Thilsted is a world-leading renewable energy engineering consultancy experienced and specialised in offshore wind.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
9	Econergy Renewable Energy LTD	Exact match	London, United KingdomHQ recorded Oct 18, 2026	51-200	66 contacts →
	Exact match “Our Vision Renewable energy will be the source of power for future generations.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
10	EDF Renewables UK & Ireland	Exact match	London, United KingdomHQ recorded Oct 18, 2026	501-1,000	55 contacts →
	Exact match “EDF Renewables is part of one of the world’s leading renewable energy companies in the UK.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
11	Vantage RE LTD	Exact match	London, United KingdomHQ recorded Oct 18, 2026	11-50	43 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
12	Reventus Power	Exact match	London, United KingdomHQ recorded Oct 18, 2026	11-50	39 contacts →
	Exact match “Reventus Power originates and invests in the development and long-term management of offshore wind projects globally.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
13	Jera NEX	Exact match	London, United KingdomHQ recorded Oct 18, 2026	201-500	38 contacts →
	Exact match “JERA Nex is an renewable energy developer launched by JERA, Japan's largest power generation company.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
14	Ocean Energy Pathway	Exact match	London, United KingdomHQ recorded Oct 18, 2026	11-50	34 contacts →
	Exact match “Ocean Energy Pathway accelerates global offshore wind growth through programmes which support the energy transition, enhance marine ecosystems, and empower local communities.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
15	Renewable Power Capital	Exact match	London, United KingdomHQ recorded Oct 18, 2026	51-200	32 contacts →
	Exact match “We invest in the development, construction, and long-term ownership of solar, onshore wind and battery storage projects, enabling the energy transition and driving stable…” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
16	Solis Marine	Exact match	London, United KingdomHQ recorded Oct 18, 2026	11-50	30 contacts →
	Exact match “Solis Marine was established in 2012 to provide independent expert technical services to the shipping and wider maritime industries.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
17	Enray Power	Exact match	London, United KingdomHQ recorded Oct 18, 2026	11-50	27 contacts →
	Exact match “Enray Power is a developer, owner and operator of renewable energy projects in the UK specialising in origination and development, through to financing, deployment and maintenance.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
18	Electric Land	Exact match	London, United KingdomHQ recorded Oct 18, 2026	11-50	26 contacts →
	Exact match “Since 2015 we have become a dominant investor in the rapidly expanding land for energy market, in particular, reserve power generation and storage facilities.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
19	AGR Renewables	Exact match	London, United KingdomHQ recorded Oct 18, 2026	11-50	24 contacts →
	Exact match “At AGR Power, we believe the future of business depends on the strength of the systems that power it.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
20	Enbw Generation UK	Exact match	London, United KingdomHQ recorded Oct 18, 2026	11-50	22 contacts →
	Exact match “EnBW Energie-Baden-Württemberg AG - the name reflects our roots and our commitment.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
21	Noventum Power	Exact match	London, United KingdomHQ recorded Oct 18, 2026	11-50	15 contacts →
	Exact match “Noventum Power is a renewable energy IPP company with fully integrated development capabilities, with its head office in London.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
22	Orsted Wind Power A S	Exact match	London, United KingdomHQ recorded Oct 18, 2026	11-50	15 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
23	Source Galileo	Exact match	London, United KingdomHQ recorded Oct 18, 2026	11-50	10 contacts →
	Exact match “Source Galileo was founded to accelerate the roll-out of large-scale renewable energy projects as part of the energy transition to a sustainable future.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
24	Cerulean Winds	Exact match	London, United KingdomHQ recorded Oct 18, 2026	1-10	8 contacts →
	Exact match “Our aim is to lead on scaled floating wind.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
25	Lisarb Energy	Exact match	London, United KingdomHQ recorded Oct 18, 2026	11-50	7 contacts →
	Exact match “Lisarb Energy Group is a fast-growing global renewable energy developer and operator.” Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “marine renewable energy firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 70 marine renewable energy firms based in London, United Kingdom

See the full list, filter by size, metro and specialty, and access 6,837 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Marine renewable energy firms based in London, United Kingdom at a glance

As of Oct 18, 2026

40.1%Verified-email coverage

243.4Average contacts per company

11-50Median size (employees)

Oct 18, 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 across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 70 companies.

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.
What qualifies: Company records associated with London, United Kingdom 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 6,837 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 metro in the United Kingdom

Marine renewable energy firms in Edinburgh26

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 based in London, United Kingdom?

RevenueBase identified 70 company matches for marine renewable energy firms associated with London, United Kingdom 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 city in the United Kingdom has the most marine renewable energy firms?

London leads the United Kingdom with 70 company records, followed by Edinburgh (26) and Aberdeen (15).

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 6,837 professional contacts with verified work emails tracked across these 70 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.