Company lists · Data refreshed September 2026

Top 25 Solar energy storage companies based in London, United Kingdom

Name: Solar 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 16, 2026 205 companies tracked

RevenueBase identified 205 solar energy storage companies headquartered in London, United Kingdom as of September 2026 and tracks 5,653 professional contacts across them, including 1,875 with verified work emails. London is the largest hub.

This list covers solar energy storage 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 16, 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 16, 2026 86% judged on-target in blind review

205Companies

5,653Contacts tracked

1,875Verified emails

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

Ranked by team size

Top 25 of 205 solar energy storage companies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to solar 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	Sonnedix	Strong evidence	London, United KingdomHQ checked Sep 16, 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 16, 2026
2	Reon Energy Limited	Partial evidence	London, United KingdomHQ checked Sep 16, 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 16, 2026
3	SO Energy	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	201-500	378 contacts →
	Partial evidence “We do energy, you do you.” Source: RevenueBase Database · checked Sep 16, 2026
4	Zenobē	Partial evidence	London, United KingdomHQ checked Sep 16, 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 16, 2026
5	Intec Energy Solutions	Strong evidence	London, United KingdomHQ checked Sep 16, 2026	501-1,000	242 contacts →
	Strong evidence “INTEC Energy Solutions delivers best-in-class services in Engineering, Procurement, Construction (EPC), Battery Energy Storage Systems (BESS), Manufacturing, Project Development…” Source: RevenueBase Database · checked Sep 16, 2026
6	FIELD	Partial evidence	London, United KingdomHQ checked Sep 16, 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 16, 2026
7	Cero Generation	Strong evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	145 contacts →
	Strong evidence “We’re focused on developing and delivering utility-scale solar and battery energy storage system (BESS) projects that power the transition to a cleaner, more resilient energy…” Source: RevenueBase Database · checked Sep 16, 2026
8	Eenergy	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	98 contacts →
	Partial evidence “eEnergy (AIM: EAAS) is a UK-based Energy-as-a-Service (EaaS) provider, funding and delivering energy-saving and energy-generating solutions across multi-site public sector and…” Source: RevenueBase Database · checked Sep 16, 2026
9	Ampyr Solar Europe	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	82 contacts →
	Partial evidence “Headquartered in London, AMPYR Solar Europe (ASE) is an independent renewable asset developer and IPP active in Germany, the Netherlands and the UK.” Source: RevenueBase Database · checked Sep 16, 2026
10	Innova	Partial evidence	London, United KingdomHQ checked Sep 16, 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 16, 2026
11	Wattstor	Indirect evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	70 contacts →
	Indirect evidence “Think Outside The Grid.” Source: RevenueBase Database · checked Sep 16, 2026
12	Sunsave	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	11-50	52 contacts →
	Partial evidence “We offer the UK's only solar subscription, Sunsave Plus, which removes the upfront cost of solar entirely.” Source: RevenueBase Database · checked Sep 16, 2026
13	Elements Green	Strong evidence	London, United KingdomHQ checked Sep 16, 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 16, 2026
14	Island Green Power	Strong evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	48 contacts →
	Strong evidence “Island Green Power specialises in the development of utility-scale solar projects and battery storage systems with operations across the UK, Spain, Italy, Australia and New…” Source: RevenueBase Database · checked Sep 16, 2026
15	Voltwise Power	Strong evidence	London, United KingdomHQ checked Sep 16, 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 16, 2026
16	Pulse Clean Energy	Strong evidence	London, United KingdomHQ checked Sep 16, 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 16, 2026
17	KX Power Limited	Strong evidence	London, United KingdomHQ checked Sep 16, 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 16, 2026
18	Solarcentury Africa	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	201-500	32 contacts →
	Partial evidence “From pioneering solar company to international developer Founded in 1998, Solarcentury has been around since the early days of the solar industry.” Source: RevenueBase Database · checked Sep 16, 2026
19	Infinity Renewables Group	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	51-200	32 contacts →
	Partial evidence “Infinity is a leading full service residential and commercial solar provider.” Source: RevenueBase Database · checked Sep 16, 2026
20	Powervault	Partial evidence	London, United KingdomHQ checked Sep 16, 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 16, 2026
21	Ortus Energy	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	11-50	25 contacts →
	Partial evidence “Ortus Energy is powering up industry across the UK & Ireland by delivering on-site renewable energy on a commercial scale.” Source: RevenueBase Database · checked Sep 16, 2026
22	Saba Energy	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	11-50	23 contacts →
	Partial evidence “We help you navigate the ever changing world of energy to design a bespoke solution that works for you, and the earth.” Source: RevenueBase Database · checked Sep 16, 2026
23	Renewable Connections	Partial evidence	London, United KingdomHQ checked Sep 16, 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 16, 2026
24	Solivus	Strong evidence	London, United KingdomHQ checked Sep 16, 2026	11-50	21 contacts →
	Strong evidence “Solivus are on a mission to decarbonise the built environment with lightweight solar, meaning businesses and homeowners can reduce their climate impact, increase energy security…” Source: RevenueBase Database · checked Sep 16, 2026
25	Solar Americas Capital Limited	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	11-50	21 contacts →
	Partial evidence “Have you considered being an investor and consumer of your own energy?” Source: RevenueBase Database · checked Sep 16, 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: solar 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 solar energy storage companies.
Partial evidence: Its own public description names part of solar 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 solar 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 205 solar energy storage companies based in London, United Kingdom

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Solar energy storage companies based in London, United Kingdom at a glance

As of Sep 16, 2026

33.2%Verified-email coverage

27.6Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · London

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

104

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

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 205 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 solar 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 “solar 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 solar 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 solar 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, 1,875 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 16, 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.

Solar energy storage companies by metro in the United Kingdom

Solar energy storage companies in London205
Solar energy storage companies in Manchester34
Solar energy storage companies in Glasgow26
Solar energy storage companies in Nottingham26

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 solar energy storage 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 solar energy storage companies are there based in London, United Kingdom?

RevenueBase identified 205 solar energy storage 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?

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

Which city has the most solar energy storage companies?

London leads with 205 headquartered companies, followed by Manchester (34) and Glasgow (26).

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 1,875 verified decision-maker contacts tracked across these 205 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 16, 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.