Company lists · Data refreshed September 2026

Top 25 Renewable energy investment firms based in London, United Kingdom

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

Compiled by the RevenueBase Data Team Data refreshed Sep 13, 2026 281 companies tracked

RevenueBase identified 281 renewable energy investment firms headquartered in London, United Kingdom as of September 2026 and tracks 5,658 professional contacts across them, including 2,704 with verified work emails and 448 with mobile numbers. London is the largest hub.

This list covers renewable energy investment firms headquartered in London, 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 13, 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 13, 2026 86% judged on-target in blind review

281Companies

5,658Contacts tracked

2,704Verified emails

448Mobile numbers

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

Ranked by team size

Top 25 of 281 renewable energy investment firms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 13, 2026. RevenueBase Smart Search rates how each company's information relates to renewable energy investment firms: 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	Lightsource BP	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	1,001-5,000	1,114 contacts →
	Strong 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 13, 2026
2	Sonnedix	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	501-1,000	563 contacts →
	Strong 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 13, 2026
3	Cubico Sustainable Investments	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	501-1,000	406 contacts →
	Strong 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 13, 2026
4	LOW Carbon	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	195 contacts →
	Strong evidence “Low Carbon creates renewable energy to fight climate change.” Source: RevenueBase Database · checked Sep 13, 2026
5	OWC	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	185 contacts →
	Strong evidence “The Renewable Energy Consultants.” Source: RevenueBase Database · checked Sep 13, 2026
6	Octopus Energy Generation	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	201-500	153 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 13, 2026
7	Schroders Greencoat LLP	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	119 contacts →
	Strong evidence “Schroders Greencoat is a specialist investment manager dedicated to renewable infrastructure, with over £8.5 billion under management.” Source: RevenueBase Database · checked Sep 13, 2026
8	Econergy Renewable Energy LTD	Strong evidence	London, United KingdomHQ checked Sep 13, 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 13, 2026
9	Nextenergy Capital	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	201-500	83 contacts →
	Partial evidence “NextEnergy Capital was founded in 2007 to become the leading specialist investment and asset manager in the solar sector.” Source: RevenueBase Database · checked Sep 13, 2026
10	Nala Renewables	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	81 contacts →
	Strong evidence “Nala Renewables is a global power and renewable energy business that develops; builds; and operates solar, wind and power storage projects.” Source: RevenueBase Database · checked Sep 13, 2026
11	Innova	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	77 contacts →
	Strong evidence “Innova is a forward-thinking renewable energy business, employing people across two offices in London and Cheltenham.” Source: RevenueBase Database · checked Sep 13, 2026
12	Sustainable Development Capital, LLP Sdcl	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	74 contacts →
	Partial evidence “Sustainable Development Capital LLP (“SDCL”) is a multi-national investment and financial advisory firm, which specialises in environmental infrastructure.” Source: RevenueBase Database · checked Sep 13, 2026
13	Nexta Capital Partners	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	65 contacts →
	Partial evidence “Nexta Capital Partners is a holding company which originates, develops, finances builds and operates renewable infrastructure assets.” Source: RevenueBase Database · checked Sep 13, 2026
14	Temporis Capital	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	62 contacts →
	Partial evidence “Temporis was founded in 2011 by three seasoned investment industry professionals.” Source: RevenueBase Database · checked Sep 13, 2026
15	Renewable Power Capital	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	51 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 13, 2026
16	Elements Green	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	51 contacts →
	Strong evidence “Elements Green (EG) is a leading renewable energy developer headquartered in London, specialising in utility-scale solar PV systems and battery energy storage solutions.” Source: RevenueBase Database · checked Sep 13, 2026
17	ARC Power	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	48 contacts →
	Strong evidence “ARC Power is at the forefront of renewable energy innovation in Africa, dedicated to transforming lives through energy access in underserved regions.” Source: RevenueBase Database · checked Sep 13, 2026
18	Bluefield Partners LLP	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	47 contacts →
	Partial evidence “Founded in 2009, Bluefield Partners LLP is a European renewables specialist, investing across the full lifecycle of greenfield and brownfield opportunities in solar, wind, and…” Source: RevenueBase Database · checked Sep 13, 2026
19	Gore Street Capital	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	46 contacts →
	Strong evidence “Gore Street Capital was formed in 2015 as a global platform to acquire and manage renewable energy assets.” Source: RevenueBase Database · checked Sep 13, 2026
20	Augusta & CO	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	44 contacts →
	Strong evidence “Augusta is a London-based specialist financial advisory firm serving the renewables and energy transition sector.” Source: RevenueBase Database · checked Sep 13, 2026
21	National Energy	Strong evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	41 contacts →
	Strong evidence “Founded in 2018 by ambitious entrepreneurs, National Energy is a US-backed, privately funded group active globally across the renewable energy sector.” Source: RevenueBase Database · checked Sep 13, 2026
22	Bluewater	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	39 contacts →
	Partial evidence “Bluewater is a specialist international private equity firm focused on the middle-market energy sector.” Source: RevenueBase Database · checked Sep 13, 2026
23	Zouk Capital LLP	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	11-50	39 contacts →
	Indirect evidence “Zouk Capital is a fund manager focused on the opportunities emerging at the intersection of infrastructure, technology and sustainability.” Source: RevenueBase Database · checked Sep 13, 2026
24	Natpower UK	Partial evidence	London, United KingdomHQ checked Sep 13, 2026	51-200	38 contacts →
	Partial evidence “NatPower UK has the largest clean energy development programme in the UK, aiming at integrating large scale smart clean energy generation and distribution with large scale…” Source: RevenueBase Database · checked Sep 13, 2026
25	Fred. Olsen Limited	Indirect evidence	London, United KingdomHQ checked Sep 13, 2026	501-1,000	35 contacts →
	Indirect evidence “Established in the UK in 1963 Fred.” Source: RevenueBase Database · checked Sep 13, 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: renewable energy investment firms. 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 renewable energy investment firms.
Partial evidence: Its own public description names part of renewable energy investment firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name renewable energy investment firms. 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 281 renewable energy investment firms based in London, United Kingdom

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Renewable energy investment firms based in London, United Kingdom at a glance

As of Sep 13, 2026

47.8%Verified-email coverage

7.9%Mobile-number coverage

20.1Average contacts per company

1-10Median size (employees)

116.0%Largest-city concentration · London

Sep 13, 2026Page data refreshed

Companies by employee count

1-10

144

11-50

102

51-200

201-500

501-1,000

1,001-5,000

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 15.0d

2,1310–30

54431–60

1961–90

090–180

10180+

Company record updated

Median 57.0d

00–30

3,10731–60

1,76061–90

44490–180

347180+

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 renewable energy investment firms, 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 London, United Kingdom whose own description of what they do matches “renewable energy investment firms”. 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 renewable energy investment firms), 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 renewable energy investment firms, and records with no verified work email. Companies headquartered outside London 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, 2,704 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 13, 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.

Renewable energy investment firms by metro in the United Kingdom

Renewable energy investment firms in London326

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 renewable energy investment firms, 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 renewable energy investment firms are there based in London, United Kingdom?

RevenueBase identified 281 renewable energy investment firms headquartered in London, 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?

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

Which city has the most renewable energy investment firms?

London leads with 326 headquartered companies, followed by Edinburgh (15) and Glasgow (15).

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 2,704 verified decision-maker contacts tracked across these 281 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 13, 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.