Company lists · Data verified August 2026

Top 25 Clean energy software companies based in the United Kingdom

Name: Clean energy software companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 654 companies tracked

There are 654 clean energy software companies headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 18,602 professional contacts across them, including 7,267 with verified work emails and 1,343 with mobile numbers. London is the largest hub.

This list covers clean energy software companies headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

654Companies

18,602Contacts tracked

7,267Verified emails

1,343Mobile numbers

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The 25 largest clean energy software companies based in the United Kingdom

Ranked by team size

Top 25 of 654 clean energy software companies based in the United Kingdom, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Octopus Energy	London	1,001-5,000	3,990	1,356
2	Enphase Energy	Atterbury	1,001-5,000	3,106	1,792
3	Kaluza	London	501-1,000	601	359
4	Good Energy	Chippenham	201-500	462	211
5	SO Energy	London	201-500	389	193
6	Terranova Software	Leamington Spa	201-500	363	254
7	Zenobē	London	201-500	334	258
8	Correla	Solihull	201-500	291	166
9	Fuse Energy	London	501-1,000	276	85
10	Greenpowermonitor, A DNV Company	London	51-200	234	60
11	Ethical Power	Bristol	51-200	227	131
12	Conrad Energy	Abingdon	51-200	172	118
13	Myenergi	Stallingborough	201-500	170	93
14	Brady Technologies	Edinburgh	51-200	144	3
15	Enoda LTD	Edinburgh	51-200	134	78
16	Bryt Energy	Birmingham	51-200	131	85
17	Amt-Sybex	n/a	51-200	120	52
18	POWWR	Manchester	51-200	117	40
19	SOLY	London	51-200	117	1
20	AES	Enfield	201-500	112	1
21	Gorilla	London	51-200	107	84
22	Eenergy	London	51-200	101	49
23	Monsson	London	501-1,000	98	32
24	Belectric UK Member Of Elevion Group	Brinkworth	51-200	97	31
25	Energy Efficient Solutions Group	Bracknell	51-200	92	70

Showing 25 of 654 clean energy software companies based in the United Kingdom

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Clean energy software companies based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 151 HQs

1,343Contacts with mobile numbers

35Emails re-verified in last 30 days

Companies by employee count

1-10

336

11-50

230

51-200

201-500

501-1,000

1,001-5,000

10001+

Clean energy software companies by metro

Metro	Companies
Clean energy software companies in London	151
Clean energy software companies in Manchester	13
Clean energy software companies in Edinburgh	11
Clean energy software companies in Glasgow	11
Clean energy software companies in Sheffield	11
Clean energy software companies in Liverpool	9
Clean energy software companies in Leeds	9

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “clean energy software companies”, with match quality audited by blind human judging, and headquartered in the United Kingdom.
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: Contact records re-verify on a rolling cadence; 35 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many clean energy software companies are there based in the United Kingdom?

There are 654 clean energy software companies headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

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

Which city has the most clean energy software companies?

London leads with 151 headquartered companies, followed by Manchester (13) and Edinburgh (11).

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 7,267 verified decision-maker contacts tracked across these 654 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.