Company lists · Data refreshed September 2026

Top 25 Utility scale energy maintenance based in the United Kingdom

Name: Utility scale energy maintenance based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 94 companies tracked

RevenueBase identified 94 utility scale energy maintenance headquartered in the United Kingdom as of September 2026 and tracks 1,557 professional contacts across them, including 347 with verified work emails. London is the largest hub.

This list covers utility scale energy maintenance 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 19, 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 19, 2026 86% judged on-target in blind review

94Companies

1,557Contacts tracked

347Verified emails

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The 25 largest utility scale energy maintenance based in the United Kingdom

Ranked by team size

Top 25 of 94 utility scale energy maintenance based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to utility scale energy maintenance: 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	GEV Wind Power	Partial evidence	Hull, United KingdomHQ checked Sep 19, 2026	501-1,000	440 contacts →
	Partial evidence “GEV Wind Power is the global leading wind turbine maintenance & repair specialist.” Source: RevenueBase Database · checked Sep 19, 2026
2	Rainham Industrial Services LTD	Partial evidence	Essex, United KingdomHQ checked Sep 19, 2026	501-1,000	264 contacts →
	Partial evidence “Rainham provides specialist industrial services that support the installation, maintenance, refurbishment, decommissioning and replacement of large industrial plants and building…” Source: RevenueBase Database · checked Sep 19, 2026
3	PJD Mechanical Engineering	Partial evidence	Doncaster, United KingdomHQ checked Sep 19, 2026	51-200	86 contacts →
	Partial evidence “PJD Mechanical Engineering Ltd Ltd has worked with a number of leading clients, operators and technology companies throughout the UK energy sector for over 30 years.” Source: RevenueBase Database · checked Sep 19, 2026
4	LCM	Indirect evidence	Padiham, United KingdomHQ checked Sep 19, 2026	51-200	62 contacts →
	Indirect evidence “Keep the Lights On with LCM Environmental Since 1987, LCM Environmental has been the backbone of critical infrastructure, ensuring everything runs smoothly behind the scenes.” Source: RevenueBase Database · checked Sep 19, 2026
5	Powerforce Global	Strong evidence	Bristol, United KingdomHQ checked Sep 19, 2026	51-200	62 contacts →
	Strong evidence “We are a global provider of flexible and robust Field Service solutions to Original Equipment Manufacturers (OEMs) and Plant Owners across the Energy & Utilities sector.” Source: RevenueBase Database · checked Sep 19, 2026
6	GEM Environmental Building Services LTD	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	59 contacts →
	Indirect evidence “GEM Environmental Building Services LTD was founded 20 years ago originally based in East London.” Source: RevenueBase Database · checked Sep 19, 2026
7	Brighter Green Engineering	Strong evidence	High Wycombe, United KingdomHQ checked Sep 19, 2026	51-200	43 contacts →
	Strong evidence “Brighter Green Engineering (BGE) is a specialist operations and maintenance provider for ground-mounted, utility-scale solar assets across the United Kingdom.” Source: RevenueBase Database · checked Sep 19, 2026
8	GES Group	Indirect evidence	Ballymena, United KingdomHQ checked Sep 19, 2026	51-200	38 contacts →
	Indirect evidence “Established over 40 years ago as Grants Electrical Services (NI) Ltd, we have grown into GES Group, a leading Electrical and Mechanical Engineering company, serving customers…” Source: RevenueBase Database · checked Sep 19, 2026
9	Integrity	Partial evidence	Aberdeen, United KingdomHQ checked Sep 19, 2026	11-50	33 contacts →
	Partial evidence “We enable safe, reliable operations and reduced outages for energy assets across the globe through our people, our expertise, and our commitment to deliver Integrated Service…” Source: RevenueBase Database · checked Sep 19, 2026
10	Industrial Maintenance Services LTD	Partial evidence	Portsmouth, United KingdomHQ checked Sep 19, 2026	51-200	24 contacts →
	Partial evidence “IMS specialise in the maintenance of production equipment and associated infrastructure.” Source: RevenueBase Database · checked Sep 19, 2026
11	Voltix Services LTD	Partial evidence	Haywards Heath, United KingdomHQ checked Sep 19, 2026	11-50	20 contacts →
	Partial evidence “Exceptional Facilities Maintenance runs right to our core.” Source: RevenueBase Database · checked Sep 19, 2026
12	Switchon Power	Partial evidence	Stourbridge, United KingdomHQ checked Sep 19, 2026	11-50	20 contacts →
	Partial evidence “SwitchOn Power is a specialized engineering company, focusing on renewable energy generation projects.” Source: RevenueBase Database · checked Sep 19, 2026
13	CPM Engineering	Partial evidence	Manchester, United KingdomHQ checked Sep 19, 2026	11-50	19 contacts →
	Partial evidence “CPM Engineering are a Manchester based electrical and mechanical engineering company, offering reactive and preventative maintenance services to rotating machines.” Source: RevenueBase Database · checked Sep 19, 2026
14	Capital Property Maintenance Limited	Partial evidence	Witham, United KingdomHQ checked Sep 19, 2026	11-50	18 contacts →
	Partial evidence “CAPITAL PROPERTY MAINTENANCE LIMITED is a facilities services company based out of Witham, ESSEX, United Kingdom.” Source: RevenueBase Database · checked Sep 19, 2026
15	Thomson LTD	Strong evidence	Hillam, United KingdomHQ checked Sep 19, 2026	51-200	16 contacts →
	Strong evidence “Specialist in overhaul and maintenance of energy from waste plants and industrial plants.” Source: RevenueBase Database · checked Sep 19, 2026
16	Power Control & Automation Solutions LTD Pcas	Indirect evidence	Sheffield, United KingdomHQ checked Sep 19, 2026	11-50	14 contacts →
	Indirect evidence “Keeping Power in Your Hands ” At Power Control & Automation Solutions Ltd, we don’t just provide services-we deliver peace of mind.” Source: RevenueBase Database · checked Sep 19, 2026
17	ARB Wind	Indirect evidence	Glenrothes, United KingdomHQ checked Sep 19, 2026	11-50	13 contacts →
	Indirect evidence “ARB WIND is a leading provider of inspection and O&M services in the renewable wind industry.” Source: RevenueBase Database · checked Sep 19, 2026
18	FPM Facility Services LTD	Partial evidence	Luton, United KingdomHQ checked Sep 19, 2026	11-50	10 contacts →
	Partial evidence “FPM Facility Services Ltd provides planned and reactive maintenance services to commercial and industrial premises.” Source: RevenueBase Database · checked Sep 19, 2026
19	ROLLO	Indirect evidence	Bristol, United KingdomHQ checked Sep 19, 2026	11-50	10 contacts →
	Indirect evidence “Operating since 1933, Rollo has a long, established and successful heritage in the power generation and plant industries.” Source: RevenueBase Database · checked Sep 19, 2026
20	I-Connect Utilities & Renewables Limited	Strong evidence	Brierley Hill, United KingdomHQ checked Sep 19, 2026	1-10	8 contacts →
	Strong evidence “i-Connect Utilities & Renewables Limited: Pioneering Renewable Energy, Utilities Connections, EV Charging, Building Services, and Smart Monitoring Systems in the UK.” Source: RevenueBase Database · checked Sep 19, 2026
21	Cilantro Facilities Management	Partial evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	7 contacts →
	Partial evidence “Cilantro Facilities Management ethos is to successfully and proactively manage mechanical, electrical services and energy centres across each of our blue chip clients’…” Source: RevenueBase Database · checked Sep 19, 2026
22	Generator Installations	Indirect evidence	Gillingham, United KingdomHQ checked Sep 19, 2026	11-50	7 contacts →
	Indirect evidence “Welcome to Generator Installations.” Source: RevenueBase Database · checked Sep 19, 2026
23	Task-Pro	Partial evidence	Kintore, United KingdomHQ checked Sep 19, 2026	1-10	5 contacts →
	Partial evidence “Mechanical Service Providers To The Oil & Gas Sector And Automotive Industry Primarily a maintenance company, we undertake overhaul, repair, upgrade, maintenance, and supply of…” Source: RevenueBase Database · checked Sep 19, 2026
24	C.C.R. Engineering Services LTD	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	1-10	4 contacts →
	Indirect evidence “Established by director Craig Richardson in 2017, C.C.R.” Source: RevenueBase Database · checked Sep 19, 2026
25	Renewable Facilities Management Services	Indirect evidence	Bridgend, United KingdomHQ checked Sep 19, 2026	11-50	4 contacts →
	Indirect evidence “The Renewable Facilities Management Services group was established in order to provide inclusive services to both asset owners and operators within the renewables industry.” Source: RevenueBase Database · checked Sep 19, 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: utility scale energy maintenance. 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 utility scale energy maintenance.
Partial evidence: Its own public description names part of utility scale energy maintenance, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name utility scale energy maintenance. 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 94 utility scale energy maintenance based in the United Kingdom

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Utility scale energy maintenance based in the United Kingdom at a glance

As of Sep 19, 2026

22.3%Verified-email coverage

16.6Average contacts per company

1-10Median size (employees)

11.7%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

501-1,000

1,001-5,000

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 94 companies.

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 utility scale energy maintenance, 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 “utility scale energy maintenance”. 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 utility scale energy maintenance), 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 utility scale energy maintenance, 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, 347 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 19, 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.

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 utility scale energy maintenance, 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 utility scale energy maintenance are there based in the United Kingdom?

RevenueBase identified 94 utility scale energy maintenance 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?

GEV Wind Power, headquartered in Hull, tops this list with the largest team on record.

Which city has the most utility scale energy maintenance?

London leads with 11 headquartered companies, followed by Bristol (2) and Lincoln (2).

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 347 verified decision-maker contacts tracked across these 94 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 19, 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.