Company lists · Data refreshed September 2026

Top 25 Energy efficiency software companies based in London, United Kingdom

Name: Energy efficiency software 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 123 companies tracked

RevenueBase identified 123 energy efficiency software companies headquartered in London, United Kingdom as of September 2026 and tracks 5,076 professional contacts across them, including 1,544 with verified work emails and 524 with mobile numbers. London is the largest hub.

This list covers energy efficiency software 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 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

123Companies

5,076Contacts tracked

1,544Verified emails

524Mobile numbers

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The 25 largest energy efficiency software companies based in London, United Kingdom

Ranked by team size

Top 25 of 123 energy efficiency software 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 efficiency software 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	Shell Energy	Strong evidence	London, United KingdomHQ checked Sep 12, 2026	1,001-5,000	2,627 contacts →
	Strong evidence “We help businesses manage energy needs, boost efficiency, control costs and achieve decarbonisation goals for a better energy future.” Source: RevenueBase Database · checked Sep 12, 2026
2	Kaluza	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	501-1,000	595 contacts →
	Partial evidence “Kaluza is the Energy Intelligence Platform, turning energy complexity into seamless coordination.” Source: RevenueBase Database · checked Sep 12, 2026
3	CFP Energy	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	201-500	171 contacts →
	Partial evidence “CFP Energy is a leading provider of energy and environmental solutions for industrial and commercial clients.” Source: RevenueBase Database · checked Sep 12, 2026
4	Brady Technologies	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	146 contacts →
	Partial evidence “At Brady Technologies, we are at the forefront of the energy transition, helping market participants navigate new challenges and opportunities with confidence.” Source: RevenueBase Database · checked Sep 12, 2026
5	Ecolibrium	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	109 contacts →
	Indirect evidence “Ecolibrium is a sustainability tech company that empowers people to make better decisions based on proven data-driven ML algorithms through continuous monitoring, analysis and…” Source: RevenueBase Database · checked Sep 12, 2026
6	best.energy	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	97 contacts →
	Partial evidence “Best.Energy is a UK based company specialising in the measurement, control and reduction of energy consumption and costs within the industrial, commercial and public sectors.” Source: RevenueBase Database · checked Sep 12, 2026
7	Alfa Energy An Edison Energy Company	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	201-500	88 contacts →
	Partial evidence “Alfa Energy Group (an Edison Energy company) is an international energy, sustainability and technology consultant partner with 200 employees over four international locations.” Source: RevenueBase Database · checked Sep 12, 2026
8	Arenko	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	68 contacts →
	Partial evidence “Arenko is a market leading technology provider enabling the clean energy transition.” Source: RevenueBase Database · checked Sep 12, 2026
9	Energy Drive	Strong evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	60 contacts →
	Strong evidence “We help heavy industry like steel become more energy efficient through the deployment of intelligent MV motor control via a zero-capex model: guaranteed net savings for the…” Source: RevenueBase Database · checked Sep 12, 2026
10	Powerverse	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	50 contacts →
	Partial evidence “Powerverse is a smart energy management company committed to creating a more affordable, connected electric future.” Source: RevenueBase Database · checked Sep 12, 2026
11	ZOA	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	501-1,000	43 contacts →
	Indirect evidence “We need intelligent technology to accelerate our path to net zero.” Source: RevenueBase Database · checked Sep 12, 2026
12	Faradai	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	39 contacts →
	Indirect evidence “Faradai provides multi-agent AI & analytics platform to accelerate decarbonization.” Source: RevenueBase Database · checked Sep 12, 2026
13	AMP X	Strong evidence	London, United KingdomHQ checked Sep 12, 2026	51-200	35 contacts →
	Strong evidence “Amp X delivers an innovative digital energy platform providing grid software services holistically addressing the challenges associated with the energy transition at the edge of…” Source: RevenueBase Database · checked Sep 12, 2026
14	Guru Systems LTD	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	32 contacts →
	Partial evidence “Guru Systems creates intelligent technology to make energy systems more transparent, lower cost and lower carbon.” Source: RevenueBase Database · checked Sep 12, 2026
15	Utilidex	Strong evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	26 contacts →
	Strong evidence “Utilidex delivers a range of integrated energy software products supporting end customers, consultants and energy suppliers/generators for data management, billing, trading…” Source: RevenueBase Database · checked Sep 12, 2026
16	Octaipipe	Strong evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	25 contacts →
	Strong evidence “OctaiPipe is an AI-powered optimisation software solution that delivers up to 30% savings in cooling energy use with zero disruption.” Source: RevenueBase Database · checked Sep 12, 2026
17	Demand Logic	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	25 contacts →
	Indirect evidence “Demand Logic is a multi-award winning building optimisation platform which provides live data intelligence on how a building operates.” Source: RevenueBase Database · checked Sep 12, 2026
18	Voltaware	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	16 contacts →
	Indirect evidence “Voltaware is a start-up electricity monitoring company based in London.” Source: RevenueBase Database · checked Sep 12, 2026
19	Commercial Energy Solutions LTD CES	Strong evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	15 contacts →
	Strong evidence “At CES (Commercial Energy Solutions), we specialise in delivering bespoke utility management solutions to help businesses reduce costs, improve energy efficiency, and achieve…” Source: RevenueBase Database · checked Sep 12, 2026
20	Flatpeak	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	15 contacts →
	Partial evidence “Flatpeak is the global energy data platform for connected devices.” Source: RevenueBase Database · checked Sep 12, 2026
21	Renewabl	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	14 contacts →
	Partial evidence “Renewabl is an expert-led platform for energy data management and procurement – one place for corporate energy buyers to replace the fragmented tool stacks they rely on today-…” Source: RevenueBase Database · checked Sep 12, 2026
22	The OAK Network	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	1-10	14 contacts →
	Partial evidence “OAK Network digitally transforms the way businesses manage and control their energy consumption.” Source: RevenueBase Database · checked Sep 12, 2026
23	Optima Energy	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	13 contacts →
	Partial evidence “Our advanced, automated technology delivers energy and sustainability data that sets new standards for Environmental, Social and Governance (ESG) reporting.” Source: RevenueBase Database · checked Sep 12, 2026
24	Orbit Energy	Indirect evidence	London, United KingdomHQ checked Sep 12, 2026	1-10	13 contacts →
	Indirect evidence “You sweat the good stuff.” Source: RevenueBase Database · checked Sep 12, 2026
25	CAP Energy	Partial evidence	London, United KingdomHQ checked Sep 12, 2026	11-50	12 contacts →
	Partial evidence “Cap Energy installs bespoke, accessible energy monitors at a site & appliance level and provides incredible data on power usage.” 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 efficiency software 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 efficiency software companies.
Partial evidence: Its own public description names part of energy efficiency software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy efficiency software 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 123 energy efficiency software companies based in London, United Kingdom

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Energy efficiency software companies based in London, United Kingdom at a glance

As of Sep 12, 2026

30.4%Verified-email coverage

10.3%Mobile-number coverage

41.3Average contacts per company

1-10Median size (employees)

74.8%Largest-city concentration · London

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

1,2630–30

25931–60

461–90

090–180

18180+

Company record updated

Median 74.0d

00–30

2,01131–60

2,17761–90

63390–180

255180+

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 efficiency software 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 efficiency software 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 efficiency software 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 efficiency software 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, 1,544 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.

Energy efficiency software companies by metro in the United Kingdom

Energy efficiency software companies in London92

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 energy efficiency software 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 energy efficiency software companies are there based in London, United Kingdom?

RevenueBase identified 123 energy efficiency software 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?

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

Which city has the most energy efficiency software companies?

London leads with 92 headquartered companies, followed by Manchester (12) and Belfast (8).

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 1,544 verified decision-maker contacts tracked across these 123 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 12, 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.