Company lists · Data refreshed September 2026

Top 25 Industrial energy efficiency firms based in the United Kingdom

Name: Industrial energy efficiency firms based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 540 companies tracked

RevenueBase identified 540 company matches for industrial energy efficiency firms associated with the United Kingdom as of September 2026 and tracks 13,561 professional contacts across them, including 4,708 with verified work emails. London is the largest hub.

This list covers company matches for industrial energy efficiency firms 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 September 17, 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 Sep 17, 2026 How this list was built

540Companies

13,561Contacts tracked

4,708Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest industrial energy efficiency firms based in the United Kingdom

Ranked by team size

Top 25 of 540 company matches for industrial energy efficiency firms based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 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 Sep 17, 2026	10001+	9,238 contacts →
	Exact match “Taking care of things.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	MARCH	Exact match	Multiple Locations Uk-wide, United KingdomHQ recorded Sep 17, 2026	1,001-5,000	273 contacts →
	Exact match “We are March.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	CFP Energy	Exact match	London, United KingdomHQ recorded Sep 17, 2026	201-500	171 contacts →
	Exact match “CFP Energy is a leading provider of energy and environmental solutions for industrial and commercial clients.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	AMBER	Exact match	Cardiff, United KingdomHQ recorded Sep 17, 2026	51-200	124 contacts →
	Exact match “We are an award-winning energy consultancy and certified B Corp™.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Tritility	Exact match	Jarrow, United KingdomHQ recorded Sep 17, 2026	51-200	122 contacts →
	Exact match “Tritility is a UK business energy consultancy helping organisations reduce energy and overhead costs through smarter electricity, gas and water procurement.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	TROO	Exact match	Doxford International Business Park, United KingdomHQ recorded Sep 17, 2026	51-200	106 contacts →
	Exact match “Managing business energy can be overwhelming.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	best.energy	Exact match	London, United KingdomHQ recorded Sep 17, 2026	51-200	97 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 · Sep 17, 2026 · View company records in RevenueBase
8	Laser Energy	Exact match	West Malling, United KingdomHQ recorded Sep 17, 2026	51-200	93 contacts →
	Exact match “At LASER Energy, part of the Commercial Services Group Energy & Environment portfolio, a wholly-owned business unit of Kent County Council, we help public sector organisations…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Katoni Engineering	Exact match	Aberdeen, United KingdomHQ recorded Sep 17, 2026	51-200	90 contacts →
	Exact match “Katoni provides consulting, engineering, optimisation and emissions reduction support for the Energy Sector.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	ECO Logic Partners	Exact match	Team Valley, United KingdomHQ recorded Sep 17, 2026	11-50	66 contacts →
	Exact match “We bring good energy to the table to help you save yours.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	JBA Engineering	Exact match	Wynyard, United KingdomHQ recorded Sep 17, 2026	11-50	63 contacts →
	Exact match “JBA are industry-leading consultants, providing flexible engineering and design solutions, procurement, and construction services.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Cenergist	Exact match	Washington, United KingdomHQ recorded Sep 17, 2026	201-500	62 contacts →
	Exact match “Cenergist is a specialist energy and water efficiency company in the UK and Europe.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Energy Drive	Exact match	London, United KingdomHQ recorded Sep 17, 2026	51-200	60 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Businesswise Solutions	Exact match	Nelson, United KingdomHQ recorded Sep 17, 2026	11-50	54 contacts →
	Exact match “We’re an energy management consultancy specialising in supporting energy-intensive businesses with energy procurement, energy management, and sustainability challenges.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Kelton	Exact match	Aberdeen, United KingdomHQ recorded Sep 17, 2026	11-50	52 contacts →
	Exact match “Kelton is the energy industry’s consultancy partner.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Carbonxgen Limited	Exact match	Sandhurst, United KingdomHQ recorded Sep 17, 2026	11-50	49 contacts →
	Exact match “Carbonxgen is a leading consultancy that specialises in solving complex energy and sustainability challenges.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Fusion For Business	Exact match	Durham, United KingdomHQ recorded Sep 17, 2026	51-200	49 contacts →
	Exact match “At Fusion For Business, we believe in the value of genuine human connection - people doing business with people they trust.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Cotopaxi LTD	Exact match	White Moss Business Park, United KingdomHQ recorded Sep 17, 2026	11-50	42 contacts →
	Exact match “Cotopaxi Energy is an independent engineering consultancy specialising in utility and carbon reduction.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Envantage, LOW Carbon And Energy Experts	Exact match	Manchester, United KingdomHQ recorded Sep 17, 2026	11-50	41 contacts →
	Exact match “At Envantage, you will find the brightest and best experts in low carbon and business energy.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Savemoneycutcarbon	Exact match	Bury St Edmunds, United KingdomHQ recorded Sep 17, 2026	11-50	40 contacts →
	Exact match “SaveMoneyCutCarbon helps organisations reduce energy, water and carbon consumption across their buildings and operations.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Evotech Technical Services	Exact match	Elland, United KingdomHQ recorded Sep 17, 2026	51-200	37 contacts →
	Exact match “Evotech Technical Services delivers smarter, more sustainable buildings through innovative M&E solutions, expert engineering, and data-driven performance - helping clients reduce…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	Everun	Exact match	Belfast, United KingdomHQ recorded Sep 17, 2026	11-50	36 contacts →
	Exact match “As the world is becoming much more energy conscious, businesses everywhere are turning to more sustainable models of energy usage.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Carbon Numbers	Exact match	Elmstead Market, United KingdomHQ recorded Sep 17, 2026	11-50	33 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Mcgrady Clarke	Exact match	Newcastle Upon Tyne, United KingdomHQ recorded Sep 17, 2026	11-50	29 contacts →
	Exact match “McGrady Clarke provides business energy management and sustainability solutions across the UK and Europe.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Emissis	Exact match	Stokesley, United KingdomHQ recorded Sep 17, 2026	51-200	29 contacts →
	Exact match “Engineering energy efficiency that pays off.” Recorded in the RevenueBase company graph · Sep 17, 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 “industrial energy efficiency firms”. 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 540 industrial energy efficiency firms based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 4,708 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Industrial energy efficiency firms based in the United Kingdom at a glance

As of Sep 17, 2026

34.7%Verified-email coverage

25.1Average contacts per company

1-10Median size (employees)

15.9%Largest-city concentration · London

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

318

11-50

173

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 540 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 “industrial energy efficiency firms” 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 4,708 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 September 17, 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 “industrial energy efficiency firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many industrial energy efficiency firms are there based in the United Kingdom?

RevenueBase identified 540 company matches for industrial energy efficiency firms associated with the United Kingdom as of September 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 industrial energy efficiency firms?

London leads with 86 company records, followed by Manchester (22) and Bristol (10).

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 4,708 professional contacts with verified work emails tracked across these 540 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 September 17, 2026.

Ready to reach these companies? Verified emails and direct dials for all 540 industrial energy efficiency firms based in the United Kingdom. Start with a free account, no credit card.

Download this list →

Related lists

Industrial energy efficiency firms by geography

Browse the directory

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.