Company lists · Data refreshed September 2026

Top 25 Energy storage companies based in London, United Kingdom

Name: Energy storage 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 12, 2026 77 companies tracked

The 77 energy storage companies based in London, United Kingdom include businesses that develop, manufacture, integrate, install, or service systems for storing electricity and managing when it is delivered. This directory includes 1,647 contacts and 812 email addresses. Across the United Kingdom, London is the largest hub for this category.

Energy storage companies develop, manufacture, install, integrate, or service systems that store electricity for later use, grid support, backup power, or energy management. This list covers companies whose primary business includes developing, manufacturing, integrating, installing, or servicing energy storage systems and related equipment or services. Ranked by team size, largest first. Data current as of September 12, 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 12, 2026 86% judged on-target in blind review

77Companies

1,647Contacts tracked

812Verified emails

88Mobile numbers

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The 25 largest energy storage companies based in London, United Kingdom

Ranked by team size

Top 25 of 77 energy storage companies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 12, 2026. RevenueBase Smart Search rates how each company's information relates to energy storage 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	Reon Energy Limited	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	201-500	402 contacts →
	Partial evidence “Reon Energy is a leading Cleantech company deploying Intelligent Renewable Energy Microgrids across South Asia, GCC & African region.” Source: RevenueBase Database · checked Sep 12, 2026
2	Zenobē	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	201-500	336 contacts →
	Partial evidence “We're Zenobē Energy and we're on a mission to make clean power accessible.” Source: RevenueBase Database · checked Sep 12, 2026
3	FIELD	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	179 contacts →
	Partial evidence “We're creating the renewable energy infrastructure and trading company of the future.” Source: RevenueBase Database · checked Sep 12, 2026
4	Statera Energy	Strong evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	142 contacts →
	Strong evidence “Statera Energy is a UK-based energy company that develops, owns, and operates flexible generation, battery storage, pumped hydro and green hydrogen projects.” Source: RevenueBase Database · checked Sep 12, 2026
5	EKU Energy	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	87 contacts →
	Partial evidence “Eku Energy is a specialist, technology-enabled developer dedicated to accelerating the energy transition.” Source: RevenueBase Database · checked Sep 12, 2026
6	Elements Green	Strong evidence	London, United KingdomHQ checked Sep 12, 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 12, 2026
7	Voltwise Power	Strong evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	42 contacts →
	Strong evidence “Voltwise develops, owns and operates flexible energy storage solutions that allow rapid deployment of renewables.” Source: RevenueBase Database · checked Sep 12, 2026
8	Pulse Clean Energy	Strong evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	35 contacts →
	Strong evidence “Through innovation in energy storage and optimisation, we will help to enable an energy network that runs entirely on renewables.” Source: RevenueBase Database · checked Sep 12, 2026
9	KX Power Limited	Strong evidence	London, United KingdomHQ checked Sep 12, 2026	201-500	35 contacts →
	Strong evidence “KX Power is a leading developer and asset manager of utility scale energy storage and flexibility technology headquartered in the UK.” Source: RevenueBase Database · checked Sep 12, 2026
10	Powervault	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	30 contacts →
	Partial evidence “At Powervault, we are on a mission to pioneer a sustainable energy future.” Source: RevenueBase Database · checked Sep 12, 2026
11	Statera Energy Operations SEO	Strong evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	27 contacts →
	Strong evidence “We are a market leading operations and maintenance provider for flexible generation and battery energy storage assets in the UK, with over 1.2GW of ESS assets under contract…” Source: RevenueBase Database · checked Sep 12, 2026
12	ALLYE	Strong evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	16 contacts →
	Strong evidence “Intelligent, flexible battery energy storage that solves grid constraints and works wherever power is needed, not just where the grid allows it.” Source: RevenueBase Database · checked Sep 12, 2026
13	Eelpower	Strong evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	14 contacts →
	Strong evidence “We construct, own and operate large scale, front of meter, energy storage solutions.” Source: RevenueBase Database · checked Sep 12, 2026
14	Adaptogen Capital	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	1-10	11 contacts →
	Partial evidence “Adaptogen was founded to provide insightful expertise to our investors and help them navigate the energy transition as sustainably and profitably as possible through investment in…” Source: RevenueBase Database · checked Sep 12, 2026
15	Happy Electron	Strong evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	11 contacts →
	Strong evidence “Happy Electron is developing electric energy storages and electric energy generation devices for high-performance applications.” Source: RevenueBase Database · checked Sep 12, 2026
16	Atlantic Green	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	1-10	8 contacts →
	Partial evidence “Atlantic Green is joint venture between two entrepreneurial shareholders, Interland and Nofar Energy.” Source: RevenueBase Database · checked Sep 12, 2026
17	Soléco Energy	Strong evidence	London, United KingdomHQ checked Sep 12, 2026	1-10	8 contacts →
	Strong evidence “Soleco Energy delivers turnkey solar and energy storage solutions for large commercial and industrial clients across the Caribbean and Latin America.” Source: RevenueBase Database · checked Sep 12, 2026
18	Varco Energy	Strong evidence	London, United KingdomHQ checked Sep 12, 2026	1-10	7 contacts →
	Strong evidence “Varco Energy is a pioneering UK based battery storage asset owner and operator.” Source: RevenueBase Database · checked Sep 12, 2026
19	Alcemi	Strong evidence	London, United KingdomHQ checked Sep 12, 2026	1-10	7 contacts →
	Strong evidence “We develop large-scale energy storage projects at key locations, alleviating grid constraints and enabling the transition to renewable energy.” Source: RevenueBase Database · checked Sep 12, 2026
20	Envirotech Energy Solutions	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	1-10	7 contacts →
	Partial evidence “Envirotech Energy Solutions is a privately owned, commercial developer and operator, specialising in the UK and European energy sector, in particular, capacity for the…” Source: RevenueBase Database · checked Sep 12, 2026
21	Eqonic	Strong evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	7 contacts →
	Strong evidence “EQONIC Group is a British technology company creating and delivering transformative energy storage technologies to help the world transition towards a zero emissions future.” Source: RevenueBase Database · checked Sep 12, 2026
22	AED Energy	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	1-10	7 contacts →
	Partial evidence “We are transforming the way the world thinks about energy.” Source: RevenueBase Database · checked Sep 12, 2026
23	Moixa Part Of Lunar Energy	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	7 contacts →
	Partial evidence “In June 2021, Moixa was acquired by Lunar Energy.” Source: RevenueBase Database · checked Sep 12, 2026
24	Capture Energy	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	1-10	6 contacts →
	Partial evidence “Capture Energy is Europe’s first battery-backed power company.” Source: RevenueBase Database · checked Sep 12, 2026
25	Dais Energy Ventures	Strong evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	6 contacts →
	Strong evidence “Dais Energy Ventures catalyses energy system decarbonisation through energy storage.” Source: RevenueBase Database · checked Sep 12, 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: energy storage 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 energy storage companies.
Partial evidence: Its own public description names part of energy storage companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy storage 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 77 energy storage companies based in London, United Kingdom

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Energy storage companies based in London, United Kingdom at a glance

As of Sep 12, 2026

49.3%Verified-email coverage

5.3%Mobile-number coverage

21.4Average contacts per company

11-50Median size (employees)

Sep 12, 2026Page data refreshed

Companies by employee count

1-10

11-50

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

6810–30

12631–60

161–90

190–180

3180+

Company record updated

Median 57.0d

00–30

89131–60

54161–90

12490–180

91180+

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 energy storage 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 “energy storage 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 energy storage 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 energy storage 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, 812 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 12, 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

How many energy storage companies are based in London, United Kingdom?

The directory lists 77 energy storage companies based in London, United Kingdom as of September 2026.

Which city in the United Kingdom has the most energy storage companies?

London leads the United Kingdom with 78 headquartered companies, followed by Edinburgh (6) and Bristol (4).

How many contacts and email addresses are available for energy storage companies?

The directory includes 1,647 contacts and 812 email addresses for energy storage companies.

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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.