Company lists · Data refreshed September 2026

Top 25 Renewable energy venture capital firms based in the United Kingdom

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

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 281 companies tracked

RevenueBase identified 281 renewable energy venture capital firms headquartered in the United Kingdom as of September 2026 and tracks 5,800 professional contacts across them, including 2,699 with verified work emails and 493 with mobile numbers. London is the largest hub.

This list covers renewable energy venture capital firms 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 5, 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 5, 2026 86% judged on-target in blind review

281Companies

5,800Contacts tracked

2,699Verified emails

493Mobile numbers

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The 25 largest renewable energy venture capital firms based in the United Kingdom

Ranked by team size

Top 25 of 281 renewable energy venture capital firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to renewable energy venture capital 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 5, 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 5, 2026
2	Sonnedix	Strong evidence	London, United KingdomHQ checked Sep 5, 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 5, 2026
3	Cubico Sustainable Investments	Strong evidence	London, United KingdomHQ checked Sep 5, 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 5, 2026
4	Anesco LTD	Strong evidence	Aldermaston Nr Reading, United KingdomHQ checked Sep 5, 2026	201-500	216 contacts →
	Strong evidence “Anesco is a market leader in renewable energy and energy efficiency.” Source: RevenueBase Database · checked Sep 5, 2026
5	LOW Carbon	Strong evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	195 contacts →
	Strong evidence “Low Carbon creates renewable energy to fight climate change.” Source: RevenueBase Database · checked Sep 5, 2026
6	Octopus Energy Generation	Partial evidence	London, United KingdomHQ checked Sep 5, 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 5, 2026
7	British Solar Renewables	Partial evidence	Shepton Mallet, United KingdomHQ checked Sep 5, 2026	51-200	148 contacts →
	Partial evidence “Clean energy, powered with purpose.” Source: RevenueBase Database · checked Sep 5, 2026
8	Nextenergy Capital	Partial evidence	London, United KingdomHQ checked Sep 5, 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 5, 2026
9	Nala Renewables	Strong evidence	London, United KingdomHQ checked Sep 5, 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 5, 2026
10	Innova	Strong evidence	London, United KingdomHQ checked Sep 5, 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 5, 2026
11	Climate Investment CI	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	62 contacts →
	Partial evidence “Climate Investment is a US and UK-based independently managed specialist investor focused on accelerating capital-efficient decarbonization of heavy emitting sectors.” Source: RevenueBase Database · checked Sep 5, 2026
12	Aura Power	Strong evidence	Bristol, United KingdomHQ checked Sep 5, 2026	11-50	58 contacts →
	Strong evidence “Aura Power is a renewable energy investor, developer and adviser.” Source: RevenueBase Database · checked Sep 5, 2026
13	Renewable Power Capital	Partial evidence	London, United KingdomHQ checked Sep 5, 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 5, 2026
14	Bluefield Partners LLP	Partial evidence	London, United KingdomHQ checked Sep 5, 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 5, 2026
15	Gore Street Capital	Strong evidence	London, United KingdomHQ checked Sep 5, 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 5, 2026
16	National Energy	Strong evidence	London, United KingdomHQ checked Sep 5, 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 5, 2026
17	Greenfield	Partial evidence	Kings Cross, United KingdomHQ checked Sep 5, 2026	11-50	41 contacts →
	Partial evidence “Greenfield specialise in the investment, development and delivery of sustainable and renewable-led infrastructure projects.” Source: RevenueBase Database · checked Sep 5, 2026
18	Deepbridge Capital	Indirect evidence	Chester, United KingdomHQ checked Sep 5, 2026	11-50	37 contacts →
	Indirect evidence “Deepbridge only invests in sectors in which our team has experience.” Source: RevenueBase Database · checked Sep 5, 2026
19	Asper Investment Management	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	32 contacts →
	Partial evidence “Asper Investment Management is a leading specialist investment management firm focused on building large-scale sustainable energy platforms.” Source: RevenueBase Database · checked Sep 5, 2026
20	AP Ventures	Strong evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	31 contacts →
	Strong evidence “AP Ventures is an independent venture capital firm headquartered in London, with offices in San Francisco and South Africa.” Source: RevenueBase Database · checked Sep 5, 2026
21	Olympus Power LTD	Partial evidence	Exeter, United KingdomHQ checked Sep 5, 2026	11-50	31 contacts →
	Partial evidence “Zero Carbon Together means we're helping you own your energy.” Source: RevenueBase Database · checked Sep 5, 2026
22	ETF Partners	Strong evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	29 contacts →
	Strong evidence “Founded in 2005, ETF Partners (The Environmental Technologies Fund) stands as Europe's original venture capital firm dedicated to sustainability and impact investing.” Source: RevenueBase Database · checked Sep 5, 2026
23	Hive Energy	Partial evidence	East Wellow, United KingdomHQ checked Sep 5, 2026	201-500	29 contacts →
	Partial evidence “Hive Energy is on a mission to save the planet.” Source: RevenueBase Database · checked Sep 5, 2026
24	Zestec Renewable Energy	Strong evidence	Bournemouth, United KingdomHQ checked Sep 5, 2026	11-50	28 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 5, 2026
25	Larkfleet Group Part Of Phoenix Sustainable Investments	Partial evidence	Bourne, United KingdomHQ checked Sep 5, 2026	11-50	26 contacts →
	Partial evidence “Larkfleet Group is now a part of Phoenix Sustainable Investments - an award-winning developer of sustainable energy projects.” Source: RevenueBase Database · checked Sep 5, 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 venture capital 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 venture capital firms.
Partial evidence: Its own public description names part of renewable energy venture capital 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 venture capital 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 venture capital firms based in the United Kingdom

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Renewable energy venture capital firms based in the United Kingdom at a glance

As of Sep 5, 2026

46.5%Verified-email coverage

8.5%Mobile-number coverage

20.6Average contacts per company

1-10Median size (employees)

54.4%Largest-city concentration · London

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

159

11-50

51-200

201-500

501-1,000

1,001-5,000

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

2,5380–30

14331–60

061–90

190–180

17180+

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 venture capital 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 the United Kingdom whose own description of what they do matches “renewable energy venture capital 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 venture capital 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 venture capital firms, 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, 2,699 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 5, 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 venture capital firms by metro

Renewable energy venture capital firms in London153

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 venture capital 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 venture capital firms are there based in the United Kingdom?

RevenueBase identified 281 renewable energy venture capital firms 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?

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

Which city has the most renewable energy venture capital firms?

London leads with 153 headquartered companies, followed by Bristol (5) and Birmingham (3).

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 2,699 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 5, 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.