Company lists · Data refreshed September 2026

Top 25 Energy efficiency program software based in the United Kingdom

Name: Energy efficiency program software based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 2, 2026 347 companies tracked

RevenueBase identified 347 energy efficiency program software headquartered in the United Kingdom as of September 2026 and tracks 13,930 professional contacts across them, including 4,877 with verified work emails and 543 with mobile numbers. London is the largest hub.

This list covers energy efficiency program software headquartered in the 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 2, 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 RevenueBase Smart Search rating on every row Refreshed Sep 2, 2026 86% judged on-target in blind review

347Companies

13,930Contacts tracked

4,877Verified emails

543Mobile numbers

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The 25 largest energy efficiency program software based in the United Kingdom

Ranked by team size

Top 25 of 347 energy efficiency program software based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 2, 2026. RevenueBase Smart Search rates how each company's information relates to energy efficiency program software: 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	British GAS	Indirect evidence	Staines, United Kingdom	10001+	9,287 contacts →
	Indirect evidence “Taking care of things.” Source: RevenueBase Database · checked Sep 2, 2026
2	Correla	Indirect evidence	Solihull, United Kingdom	201-500	291 contacts →
	Indirect evidence “Correla exists because we dream of a simpler, greener society powered by our investment in innovation and our passion for customers.” Source: RevenueBase Database · checked Sep 2, 2026
3	E.On Control Solutions LTD	Partial evidence	United Kingdom	201-500	205 contacts →
	Partial evidence “Who we are » The UK’s leading Energy Management company » Our aim is to increase energy performance within buildings » Deliver energy projects to maximise customer return on…” Source: RevenueBase Database · checked Sep 2, 2026
4	CFP Energy	Partial evidence	London, United Kingdom	201-500	177 contacts →
	Partial evidence “CFP Energy is a leading provider of energy and environmental solutions for industrial and commercial clients.” Source: RevenueBase Database · checked Sep 2, 2026
5	Brady Technologies	Partial evidence	Edinburgh, United Kingdom	51-200	144 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 2, 2026
6	Amt-Sybex	Partial evidence	United Kingdom	51-200	120 contacts →
	Partial evidence “AMT-SYBEX has worked in the infrastructure and energy industries since 1990, witnessing many changes; from privatisation to deregulation, to smart energy and beyond.” Source: RevenueBase Database · checked Sep 2, 2026
7	ZTP	Indirect evidence	London, United Kingdom	51-200	116 contacts →
	Indirect evidence “At ZTP, we’re committed to accelerating the transition to a more sustainable future by reducing the negative impact of human activity on our planet - ecologically, financially…” Source: RevenueBase Database · checked Sep 2, 2026
8	Gorilla	Indirect evidence	London, United Kingdom	51-200	107 contacts →
	Indirect evidence “Hi there, we are Gorilla.” Source: RevenueBase Database · checked Sep 2, 2026
9	TROO	Partial evidence	United Kingdom	51-200	104 contacts →
	Partial evidence “Managing business energy can be overwhelming.” Source: RevenueBase Database · checked Sep 2, 2026
10	best.energy	Partial evidence	London, United Kingdom	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 2, 2026
11	Team Energy Auditing Agency LTD	Strong evidence	Milton Keynes, United Kingdom	51-200	70 contacts →
	Strong evidence “TEAM is the UK’s leading supplier of carbon and energy management solutions committed to driving the efficiency and sustainability of energy consumption and environmental…” Source: RevenueBase Database · checked Sep 2, 2026
12	Kinto Join Limited	Indirect evidence	Epsom, United Kingdom	51-200	61 contacts →
	Indirect evidence “We help organisations understand, measure, and meaningfully reduce their environmental impact through a unique combination of expert consultancy, advanced carbon accounting…” Source: RevenueBase Database · checked Sep 2, 2026
13	Matrix Control Solutions LTD	Partial evidence	Glasgow, United Kingdom	201-500	61 contacts →
	Partial evidence “Who we are » The UK’s leading Energy Management company » Our aim is to increase energy performance within buildings » Deliver energy projects to maximise customer return on…” Source: RevenueBase Database · checked Sep 2, 2026
14	Powerverse	Partial evidence	London, United Kingdom	11-50	52 contacts →
	Partial evidence “Powerverse is a smart energy management company committed to creating a more affordable, connected electric future.” Source: RevenueBase Database · checked Sep 2, 2026
15	Fusion For Business	Indirect evidence	Durham, United Kingdom	51-200	49 contacts →
	Indirect evidence “At Fusion For Business, we believe in the value of genuine human connection - people doing business with people they trust.” Source: RevenueBase Database · checked Sep 2, 2026
16	Gridedge	Indirect evidence	Birmingham, United Kingdom	11-50	41 contacts →
	Indirect evidence “Your buildings are running 24/7, making decisions you can't see.” Source: RevenueBase Database · checked Sep 2, 2026
17	Faradai	Indirect evidence	London, United Kingdom	51-200	40 contacts →
	Indirect evidence “Faradai provides multi-agent AI & analytics platform to accelerate decarbonization.” Source: RevenueBase Database · checked Sep 2, 2026
18	MPL Technology Group	Partial evidence	Bicester, United Kingdom	11-50	31 contacts →
	Partial evidence “At MPL, we define an Estate as the full network of client facilities contributing to overall energy use.” Source: RevenueBase Database · checked Sep 2, 2026
19	Carbon Numbers	Partial evidence	Elmstead Market, United Kingdom	11-50	30 contacts →
	Partial evidence “Carbon Numbers is a UK-based energy management and low-carbon solutions specialist with a turnkey service to help organisations reduce energy costs, meet ESOS and SECR obligations…” Source: RevenueBase Database · checked Sep 2, 2026
20	Celtic Dynamics	Partial evidence	Birmingham, United Kingdom	51-200	29 contacts →
	Partial evidence “Celtic Dynamics is an energy engineering and services company.” Source: RevenueBase Database · checked Sep 2, 2026
21	Smartwatt	Partial evidence	Tunbridge Wells, United Kingdom	11-50	28 contacts →
	Partial evidence “A Smartwatt, com mais de 15 anos de experiência, cria e implementa soluções de eficiência energética, produção de energia renovável e digitalização da gestão da energia…” Source: RevenueBase Database · checked Sep 2, 2026
22	Utilidex	Strong evidence	London, United Kingdom	11-50	28 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 2, 2026
23	Arbnco	Indirect evidence	Glasgow, United Kingdom	51-200	26 contacts →
	Indirect evidence “We’re a multi, award-winning PropTech company addressing one of the defining challenges of our time: climate change.” Source: RevenueBase Database · checked Sep 2, 2026
24	Systemslink	Partial evidence	Bedford, United Kingdom	51-200	25 contacts →
	Partial evidence “The UK’s industry-leading utilities, carbon and analytics management software provider.” Source: RevenueBase Database · checked Sep 2, 2026
25	Demand Logic	Indirect evidence	London, United Kingdom	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 2, 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 program software. 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 program software.
Partial evidence: Its own public description names part of energy efficiency program software, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy efficiency program software. 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 347 energy efficiency program software based in the United Kingdom

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Energy efficiency program software based in the United Kingdom at a glance

As of Sep 2, 2026

35.0%Verified-email coverage

3.9%Mobile-number coverage

40.1Average contacts per company

1-10Median size (employees)

23.3%Largest-city concentration · London

Sep 2, 2026Page data refreshed

Companies by employee count

1-10

178

11-50

125

51-200

201-500

1,001-5,000

5,001-10,000

10001+

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 program software, 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 the United Kingdom whose own description of what they do matches “energy efficiency program software”. 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 program software), 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 program software, and records with no verified work email. Companies headquartered outside United Kingdom 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, 4,877 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 2, 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 program software by metro

Energy efficiency program software in London81

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 program software, 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 program software are there based in the United Kingdom?

RevenueBase identified 347 energy efficiency program software headquartered in the 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?

British GAS, headquartered in Staines, tops this list with the largest team on record.

Which city has the most energy efficiency program software?

London leads with 81 headquartered companies, followed by Bristol (10) and Manchester (9).

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 4,877 verified decision-maker contacts tracked across these 347 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 2, 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.