Company lists · Data refreshed October 2026

Top 25 Open protocol energy management system suppliers based in the United Kingdom

Name: Open protocol energy management system suppliers based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 28, 2026 169 companies tracked

RevenueBase identified 169 company matches for open protocol energy management system suppliers associated with the United Kingdom as of October 2026 and tracks 13,008 professional contacts across them, including 4,755 with verified work emails. London is the largest hub.

This list covers company matches for open protocol energy management system suppliers associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 SmartSearch · Exact Recorded Oct 28, 2026 How this list was built

169Companies

13,008Contacts tracked

4,755Verified emails

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The 25 largest open protocol energy management system suppliers based in the United Kingdom

Ranked by team size

Top 25 of 169 company matches for open protocol energy management system suppliers based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 28, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	British GAS	Exact match	Windsor, United KingdomHQ recorded Oct 28, 2026	10001+	9,535 contacts →
	Exact match “Taking care of things.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
2	Dalkia UK	Exact match	London, United KingdomHQ recorded Oct 28, 2026	5,001-10,000	1,110 contacts →
	Exact match “Together, we’re delivering technical solutions for a better society and an Electric Britain Dalkia is one of the UK’s leading technical and energy services providers at the…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
3	BMSI	Exact match	Maidenhead, United KingdomHQ recorded Oct 28, 2026	201-500	232 contacts →
	Exact match “BMSI is the UK’s largest & leading Independent systems integrator of Building Energy Management Systems (BEMS).” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
4	E.On Control Solutions LTD	Exact match	Bury, United KingdomHQ recorded Oct 28, 2026	201-500	216 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
5	Learnd	Exact match	Manchester, United KingdomHQ recorded Oct 28, 2026	201-500	194 contacts →
	Exact match “learnd was founded in 2020 to disrupt the way buildings operate by providing energy and cost savings at scale - we call this the Power of Many.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
6	Trend Control Systems	Exact match	Horsham, United KingdomHQ recorded Oct 28, 2026	501-1,000	117 contacts →
	Exact match “Trend is one of the world's leading Building Energy Management Systems manufacturers, with a worldwide distribution and support network covering over 50 countries.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
7	TROO	Exact match	Doxford International Business Park, United KingdomHQ recorded Oct 28, 2026	51-200	112 contacts →
	Exact match “Managing business energy can be overwhelming.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
8	best.energy	Exact match	London, United KingdomHQ recorded Oct 28, 2026	51-200	105 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
9	Resource Data Management	Exact match	Glasgow, United KingdomHQ recorded Oct 28, 2026	51-200	100 contacts →
	Exact match “We help businesses optimise their HVACR and BMS control systems, reduce energy use, and ensure food safety compliance.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
10	Electracom Projects LTD	Exact match	Burnham, United KingdomHQ recorded Oct 28, 2026	11-50	65 contacts →
	Exact match “One of the UK's leading independent BEMS companies, fast growing and focused to be at the forefront of the building controls industry.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
11	UK Electric Limited	Exact match	Newbury, United KingdomHQ recorded Oct 28, 2026	51-200	57 contacts →
	Exact match “UK Electric Ltd are a powerful mix of technical sales and distribution companies, offering national coverage of all your energy controls solutions with a robust network of…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
12	Matrix Control Solutions LTD	Exact match	Bury, United KingdomHQ recorded Oct 28, 2026	201-500	54 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
13	Ista Energy UK	Exact match	Duxford, United KingdomHQ recorded Oct 28, 2026	n/a	46 contacts →
	Exact match “Ista is an established, multinational energy services organisation, headquartered in Germany, operating across 22 countries with 5800 employees.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
14	Data Energy	Exact match	Bishops Stortford, United KingdomHQ recorded Oct 28, 2026	11-50	45 contacts →
	Exact match “Trusted partners for residential property managers, delivering innovative solutions for procurement, metering, billing and data collection.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
15	Impact Control Systems Limited	Exact match	Liverpool, United KingdomHQ recorded Oct 28, 2026	51-200	37 contacts →
	Exact match “Impact Control Systems have been providing Building Energy Management System solutions for over 30 Years.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
16	ONE Sightsolutions LTD	Exact match	Hartley Wintney, United KingdomHQ recorded Oct 28, 2026	11-50	37 contacts →
	Exact match “https://onesight.solutions/ Here at One Sightsolutions we are the leading UK supplier of reputable building automation and energy management products & services.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
17	Global Associates	Exact match	Sittingbourne, United KingdomHQ recorded Oct 28, 2026	11-50	34 contacts →
	Exact match “We founded global associates based on a single commitment to our clients: to deliver the right business results for you, on time and on budget, with high-quality, cost-effective…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
18	Syscom BMS	Exact match	Egham, United KingdomHQ recorded Oct 28, 2026	11-50	31 contacts →
	Exact match “An independent control systems house specialising in Building Energy Management Systems (BMS, BEMS) for the building services industry and was formed in the autumn of 1998.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
19	MPL Technology Group	Exact match	Bicester, United KingdomHQ recorded Oct 28, 2026	11-50	30 contacts →
	Exact match “At MPL, we define an Estate as the full network of client facilities contributing to overall energy use.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
20	Emissis	Exact match	Stokesley, United KingdomHQ recorded Oct 28, 2026	51-200	29 contacts →
	Exact match “Engineering energy efficiency that pays off.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
21	Laplace Solutions LTD	Exact match	Glasgow, United KingdomHQ recorded Oct 28, 2026	51-200	29 contacts →
	Exact match “About Us Laplace Solutions has a history stretching back to 1976, when we sold instrumentation products to a variety of industries.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
22	Integrated BMS LTD	Exact match	Newark, United KingdomHQ recorded Oct 28, 2026	11-50	26 contacts →
	Exact match “Integrated BMS specialise in providing Energy Management Systems for the built environment.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
23	Concord Environmental Technologies	Exact match	Stourbridge, United KingdomHQ recorded Oct 28, 2026	11-50	23 contacts →
	Exact match “Concord Environmental Technologies specialises in the design, installation and maintenance of Building Energy Management Systems (BEMS) and Environmental Controls for companies…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
24	ATS	Exact match	Kenn, United KingdomHQ recorded Oct 28, 2026	11-50	20 contacts →
	Exact match “Associated Technology Services (ATS Controls) is an automation and energy solutions specialist delivering Building Management Systems (BMS), Energy Management Systems (EMS), and…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
25	Comfort Controls Limited	Exact match	Hemel Hempstead, United KingdomHQ recorded Oct 28, 2026	51-200	19 contacts →
	Exact match “Take control of YOUR environment.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “open protocol energy management system suppliers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 169 open protocol energy management system suppliers based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 4,755 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Open protocol energy management system suppliers based in the United Kingdom at a glance

As of Oct 28, 2026

36.6%Verified-email coverage

77.0Average contacts per company

11-50Median size (employees)

10.1%Largest-city concentration · London

Oct 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 169 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United Kingdom whose business descriptions match “open protocol energy management system suppliers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 4,755 professional contacts with verified work emails across the full matched dataset. 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 October 28, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “open protocol energy management system suppliers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many open protocol energy management system suppliers are there based in the United Kingdom?

RevenueBase identified 169 company matches for open protocol energy management system suppliers associated with the United Kingdom as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

British GAS tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most open protocol energy management system suppliers?

London leads with 17 company records, followed by Manchester (6) and Birmingham (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 4,755 professional contacts with verified work emails tracked across these 169 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 28, 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 SmartSearch, 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.