Company lists · Data refreshed September 2026

Top 25 Renewable energy financing companies based in the United Kingdom

Name: Renewable energy financing companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 396 companies tracked

RevenueBase identified 396 company matches for renewable energy financing companies associated with the United Kingdom as of September 2026 and tracks 5,141 professional contacts across them, including 2,086 with verified work emails. London is the largest hub.

This list covers company matches for renewable energy financing companies associated with the 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 September 17, 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 Sep 17, 2026 How this list was built

396Companies

5,141Contacts tracked

2,086Verified emails

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The 25 largest renewable energy financing companies based in the United Kingdom

Ranked by team size

Top 25 of 396 company matches for renewable energy financing companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 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	Sonnedix	Exact match	London, United KingdomHQ recorded Sep 17, 2026	501-1,000	563 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 · Sep 17, 2026 · View company records in RevenueBase
2	Cubico Sustainable Investments	Exact match	London, United KingdomHQ recorded Sep 17, 2026	501-1,000	406 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 · Sep 17, 2026 · View company records in RevenueBase
3	Anesco LTD	Exact match	Aldermaston Nr Reading, United KingdomHQ recorded Sep 17, 2026	201-500	216 contacts →
	Exact match “Anesco is a market leader in renewable energy and energy efficiency.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Octopus Energy Generation	Exact match	London, United KingdomHQ recorded Sep 17, 2026	201-500	153 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 · Sep 17, 2026 · View company records in RevenueBase
5	British Solar Renewables	Exact match	Shepton Mallet, United KingdomHQ recorded Sep 17, 2026	51-200	148 contacts →
	Exact match “Clean energy, powered with purpose.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	Bryt Energy	Exact match	Birmingham, United KingdomHQ recorded Sep 17, 2026	51-200	129 contacts →
	Exact match “Part of the Statkraft group, we provide British businesses with zero carbon, 100% renewable electricity*, sourced solely from Solar, Wind and Hydro.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	Econergy Renewable Energy LTD	Exact match	London, United KingdomHQ recorded Sep 17, 2026	51-200	112 contacts →
	Exact match “Our Vision Renewable energy will be the source of power for future generations.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Innova	Exact match	London, United KingdomHQ recorded Sep 17, 2026	51-200	77 contacts →
	Exact match “Innova is a forward-thinking renewable energy business, employing people across two offices in London and Cheltenham.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Wattstor	Exact match	London, United KingdomHQ recorded Sep 17, 2026	51-200	70 contacts →
	Exact match “Think Outside The Grid.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	Nexta Capital Partners	Exact match	London, United KingdomHQ recorded Sep 17, 2026	51-200	65 contacts →
	Exact match “Nexta Capital Partners is a holding company which originates, develops, finances builds and operates renewable infrastructure assets.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	Aura Power	Exact match	Bristol, United KingdomHQ recorded Sep 17, 2026	11-50	58 contacts →
	Exact match “Aura Power is a renewable energy investor, developer and adviser.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Ecolution Group	Exact match	Trottiscliffe, United KingdomHQ recorded Sep 17, 2026	51-200	55 contacts →
	Exact match “Renewable Energy Experts: For over 25 years, Ecolution have been at the forefront of renewable energy services, using our award-winning expertise, to help our clients innovate and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Renewable Power Capital	Exact match	London, United KingdomHQ recorded Sep 17, 2026	51-200	51 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 · Sep 17, 2026 · View company records in RevenueBase
14	National Energy	Exact match	London, United KingdomHQ recorded Sep 17, 2026	51-200	41 contacts →
	Exact match “Founded in 2018 by ambitious entrepreneurs, National Energy is a US-backed, privately funded group active globally across the renewable energy sector.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Greenfield	Exact match	Kings Cross, United KingdomHQ recorded Sep 17, 2026	11-50	41 contacts →
	Exact match “Greenfield specialise in the investment, development and delivery of sustainable and renewable-led infrastructure projects.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Belltown Power	Exact match	Bristol, United KingdomHQ recorded Sep 17, 2026	11-50	40 contacts →
	Exact match “Belltown Power is an international renewable energy company (IPP).” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Start Solar UK & Ireland	Exact match	Lissue Industrial Estate, United KingdomHQ recorded Sep 17, 2026	51-200	39 contacts →
	Exact match “Start Solar is a renewable energy – design and installation – company that specialises in a range of renewable energy solutions.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Olympus Power LTD	Exact match	Exeter, United KingdomHQ recorded Sep 17, 2026	11-50	31 contacts →
	Exact match “Zero Carbon Together means we're helping you own your energy.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Hive Energy	Exact match	East Wellow, United KingdomHQ recorded Sep 17, 2026	201-500	29 contacts →
	Exact match “Hive Energy is on a mission to save the planet.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Zestec Renewable Energy	Exact match	Bournemouth, United KingdomHQ recorded Sep 17, 2026	11-50	28 contacts →
	Exact match “Owned by funds advised by Octopus Energy Generation, one of Europe’s largest renewable energy investors currently managing renewable assets totalling more than £5bn, we are…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Effective Energy Group	Exact match	Worksop, United KingdomHQ recorded Sep 17, 2026	11-50	27 contacts →
	Exact match “Through efficient energy improvements, installations, and innovations, the Effective Energy Group Ltd.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	Nexwell Power	Exact match	London, United KingdomHQ recorded Sep 17, 2026	11-50	27 contacts →
	Exact match “Part of the Nexwell Group” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Larkfleet Group Part Of Phoenix Sustainable Investments	Exact match	Bourne, United KingdomHQ recorded Sep 17, 2026	11-50	26 contacts →
	Exact match “Larkfleet Group is now a part of Phoenix Sustainable Investments - an award-winning developer of sustainable energy projects.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Ortus Energy	Exact match	London, United KingdomHQ recorded Sep 17, 2026	11-50	25 contacts →
	Exact match “Ortus Energy is powering up industry across the UK & Ireland by delivering on-site renewable energy on a commercial scale.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Luminous Energy Group LTD	Exact match	Corsham, United KingdomHQ recorded Sep 17, 2026	11-50	24 contacts →
	Exact match “Luminous Energy is a clean energy development company at the forefront of the global energy revolution.” Recorded in the RevenueBase company graph · Sep 17, 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 “renewable energy financing companies”. 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 396 renewable energy financing companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 2,086 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Renewable energy financing companies based in the United Kingdom at a glance

As of Sep 17, 2026

40.6%Verified-email coverage

13.0Average contacts per company

1-10Median size (employees)

33.3%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

219

11-50

127

51-200

201-500

501-1,000

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 396 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 the United Kingdom whose business descriptions match “renewable energy financing companies” 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 2,086 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 September 17, 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.

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 “renewable energy financing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many renewable energy financing companies are there based in the United Kingdom?

RevenueBase identified 396 company matches for renewable energy financing companies associated with the United Kingdom as of September 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?

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

Which city has the most renewable energy financing companies?

London leads with 132 company records, followed by Bristol (9) and Birmingham (6).

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 2,086 professional contacts with verified work emails tracked across these 396 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 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 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.