Company lists · Data refreshed September 2026

Top 25 Green energy venture capital companies based in London, United Kingdom

Name: Green energy venture capital companies based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 169 companies tracked

RevenueBase identified 169 green energy venture capital companies headquartered in London, United Kingdom as of September 2026 and tracks 3,571 professional contacts across them, including 1,660 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers green energy venture capital companies 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 28, 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 28, 2026 86% judged on-target in blind review

169Companies

3,571Contacts tracked

1,660Verified emails

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The 25 largest green energy venture capital companies based in London, United Kingdom

Ranked by team size

Top 25 of 169 green energy venture capital companies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to green energy venture capital companies: 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	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	1,114 contacts →
	Partial 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 28, 2026
2	Cubico Sustainable Investments	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	501-1,000	406 contacts →
	Partial 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 28, 2026
3	LOW Carbon	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	195 contacts →
	Partial evidence “Low Carbon creates renewable energy to fight climate change.” Source: RevenueBase Database · checked Sep 28, 2026
4	Octopus Energy Generation	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	153 contacts →
	Strong 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 28, 2026
5	Innova	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	77 contacts →
	Partial evidence “Innova is a forward-thinking renewable energy business, employing people across two offices in London and Cheltenham.” Source: RevenueBase Database · checked Sep 28, 2026
6	Climate Investment CI	Partial evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
7	Renewable Power Capital	Partial evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
8	Bluefield Partners LLP	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	47 contacts →
	Indirect 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 28, 2026
9	Gore Street Capital	Strong evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
10	National Energy	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	41 contacts →
	Partial 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 28, 2026
11	Bluewater	Partial evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
12	Jera NEX	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	33 contacts →
	Partial evidence “JERA Nex is an renewable energy developer launched by JERA, Japan's largest power generation company.” Source: RevenueBase Database · checked Sep 28, 2026
13	Asper Investment Management	Partial evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
14	AP Ventures	Strong evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
15	ETF Partners	Strong evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
16	Electric Land	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	24 contacts →
	Partial evidence “Since 2015 we have become a dominant investor in the rapidly expanding land for energy market, in particular, reserve power generation and storage facilities.” Source: RevenueBase Database · checked Sep 28, 2026
17	Pash Global	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	22 contacts →
	Partial evidence “PASH GLOBAL (“PASH”) is an impact investor in the clean energy sector.” Source: RevenueBase Database · checked Sep 28, 2026
18	Renewable Connections	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	21 contacts →
	Partial evidence “Renewable Connections deliver highly innovative renewable energy developments in strategic locations across the UK and beyond.” Source: RevenueBase Database · checked Sep 28, 2026
19	Taranis	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	19 contacts →
	Indirect evidence “Taranis is an investment and asset management company owned by the Perenco Group.” Source: RevenueBase Database · checked Sep 28, 2026
20	Glennmont Partners From Nuveen	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	17 contacts →
	Partial evidence “Glennmont Partners is one of Europe’s largest fund managers focusing exclusively on investment in clean energy infrastructure.” Source: RevenueBase Database · checked Sep 28, 2026
21	Victory Hill Capital Partners LLP	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	15 contacts →
	Partial evidence “Victory Hill is based in London and was founded in May 2020 by an experienced team of energy financiers, that have spun-out of a large established global project finance banking…” Source: RevenueBase Database · checked Sep 28, 2026
22	Clean Energy Transition LLP	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	14 contacts →
	Partial evidence “Clean Energy Transition LLP is an investment management partnership focused on fundamental equity investing.” Source: RevenueBase Database · checked Sep 28, 2026
23	United Capital	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	501-1,000	14 contacts →
	Partial evidence “United Capital Group invest in consolidating the fragmented UK building and home services market, with a primary focus on the de-carbonisation of the sector.” Source: RevenueBase Database · checked Sep 28, 2026
24	Clean Growth Fund	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	13 contacts →
	Indirect evidence “CGF invest in tech innovations that reduce greenhouse gas emissions or improve resource efficiency across power, transport, industry, buildings, waste and water.” Source: RevenueBase Database · checked Sep 28, 2026
25	NOA	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	13 contacts →
	Indirect evidence “noa is Europe's largest built world VC firm, backing the founders rebuilding the physical world.” Source: RevenueBase Database · checked Sep 28, 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: green energy venture capital companies. 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 green energy venture capital companies.
Partial evidence: Its own public description names part of green energy venture capital companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name green energy venture capital companies. 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 169 green energy venture capital companies based in London, United Kingdom

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Green energy venture capital companies based in London, United Kingdom at a glance

As of Sep 28, 2026

46.5%Verified-email coverage

21.1Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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 169 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 green energy venture capital companies, 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 “green energy venture capital companies”. 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 green energy venture capital companies), 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 green energy venture capital companies, 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, 1,660 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 28, 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.

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 green energy venture capital companies, 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 green energy venture capital companies are there based in London, United Kingdom?

RevenueBase identified 169 green energy venture capital companies 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 in the United Kingdom has the most green energy venture capital companies?

London leads the United Kingdom with 169 headquartered companies, followed by Bristol (6) and Manchester (4).

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 1,660 verified decision-maker contacts tracked across these 169 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 28, 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.