Company lists · Data refreshed September 2026

Top 25 Data center electrical contractors based in Ireland

Name: Data center electrical contractors based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 157 companies tracked

RevenueBase identified 157 data center electrical contractors headquartered in Ireland as of September 2026 and tracks 5,962 professional contacts across them, including 2,661 with verified work emails. Dublin is the largest hub.

This list covers data center electrical contractors headquartered in Ireland, 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 16, 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 16, 2026 86% judged on-target in blind review

157Companies

5,962Contacts tracked

2,661Verified emails

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The 25 largest data center electrical contractors based in Ireland

Ranked by team size

Top 25 of 157 data center electrical contractors based in Ireland, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to data center electrical contractors: 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	Kirby Group Engineering	Strong evidence	Limerick, IrelandHQ checked Sep 16, 2026	1,001-5,000	1,486 contacts →
	Strong evidence “Founded in 1964, Kirby is a leading Mechanical and Electrical engineering contractor with operations in Ireland, the UK, mainland Europe and South Africa.” Source: RevenueBase Database · checked Sep 16, 2026
2	Winthrop Technologies	Strong evidence	Dublin, IrelandHQ checked Sep 16, 2026	501-1,000	764 contacts →
	Strong evidence “Winthrop Technologies is a dedicated data centre delivery partner providing turnkey solutions to our clients, headquartered in Dublin and delivering throughout Europe.” Source: RevenueBase Database · checked Sep 16, 2026
3	Specialist Technical Services STS Group	Partial evidence	Old Kilmeaden Road, IrelandHQ checked Sep 16, 2026	1,001-5,000	482 contacts →
	Partial evidence “STS Group, is dedicated to being the leading and most cost-efficient provider of electrical engineering, instrumentation, design and commissioning services across Ireland, UK…” Source: RevenueBase Database · checked Sep 16, 2026
4	MTM Engineering LTD	Strong evidence	Slane, IrelandHQ checked Sep 16, 2026	501-1,000	253 contacts →
	Strong evidence “MTM Engineering – Delivering Excellence in Critical Power and Communications Solutions MTM Engineering is a leading specialist electrical contractor headquartered in Ireland.” Source: RevenueBase Database · checked Sep 16, 2026
5	Sensori	Strong evidence	Dublin, IrelandHQ checked Sep 16, 2026	201-500	223 contacts →
	Strong evidence “As a global leader in mission critical Data Centres, MEP services and Facilities Management, Sensori brings unmatched technical expertise to the design and construction of the…” Source: RevenueBase Database · checked Sep 16, 2026
6	CJK	Strong evidence	Dublin, IrelandHQ checked Sep 16, 2026	201-500	219 contacts →
	Strong evidence “CJK is one of the leading M&E contractors in Ireland, delivering mission critical mechanical and electrical solutions across high demand sectors.” Source: RevenueBase Database · checked Sep 16, 2026
7	Tritech Engineering	Indirect evidence	Dublin 22, IrelandHQ checked Sep 16, 2026	201-500	173 contacts →
	Indirect evidence “Driving ESG Success Through Precision Engineering Investors today face increasing pressure to achieve higher building performance standards, meet strict sustainability targets…” Source: RevenueBase Database · checked Sep 16, 2026
8	CET Connect	Indirect evidence	Clonmel, IrelandHQ checked Sep 16, 2026	51-200	80 contacts →
	Indirect evidence “CET Connect is a leading installer of IT Network Infrastructure & Structured Cabling Installations.” Source: RevenueBase Database · checked Sep 16, 2026
9	Deco Engineering	Partial evidence	Dublin, IrelandHQ checked Sep 16, 2026	501-1,000	47 contacts →
	Partial evidence “Mechanical and Electrical Engineering” Source: RevenueBase Database · checked Sep 16, 2026
10	Cloncad Limited	Partial evidence	Kildare, IrelandHQ checked Sep 16, 2026	51-200	43 contacts →
	Partial evidence “Established in 2006, Cloncad is a 100% Irish owned contractor headquartered in Moyvalley, Kildare.” Source: RevenueBase Database · checked Sep 16, 2026
11	Capital Switchgear	Strong evidence	Rathcoole, IrelandHQ checked Sep 16, 2026	51-200	42 contacts →
	Strong evidence “Capital Switchgear is a leader in the design and manufacture of Low Voltage switchgear for Data Centers, Commercial and Industrial buildings.” Source: RevenueBase Database · checked Sep 16, 2026
12	Premium Power LTD	Strong evidence	Dublin, IrelandHQ checked Sep 16, 2026	11-50	42 contacts →
	Strong evidence “Premium Power is an electrical engineering consultancy focused on providing innovative, bespoke solutions to the data centre, pharmaceutical, manufacturing, renewable & utility…” Source: RevenueBase Database · checked Sep 16, 2026
13	JMC Electrics	Strong evidence	Dublin City, IrelandHQ checked Sep 16, 2026	51-200	39 contacts →
	Strong evidence “Established in 2004, JMC is a trusted Electrical Engineering contractor with over two decades of industry experience.” Source: RevenueBase Database · checked Sep 16, 2026
14	Manning & Buckley Electrical LTD	Partial evidence	Maynooth, IrelandHQ checked Sep 16, 2026	51-200	37 contacts →
	Partial evidence “Manning and Buckley have been providing a comprehensive range of electrical services in both the commercial and industrial sectors for 18 years We pride ourselves on our ability…” Source: RevenueBase Database · checked Sep 16, 2026
15	Easca Group	Partial evidence	Galway, IrelandHQ checked Sep 16, 2026	201-500	33 contacts →
	Partial evidence “Easca Group was founded by Gary O’Boyle and Simon Kavanagh as a solution to electrical and mechanical labour requirements throughout Europe and globally.” Source: RevenueBase Database · checked Sep 16, 2026
16	Derg Client Services	Strong evidence	Borrisokane, IrelandHQ checked Sep 16, 2026	11-50	31 contacts →
	Strong evidence “Derg Client Services aims to become a market leading provider in the electrical industry to a variety of industries including data processing, biotechnology, pharmaceutical and…” Source: RevenueBase Database · checked Sep 16, 2026
17	Sammin Engineering	Partial evidence	Dublin 15, IrelandHQ checked Sep 16, 2026	51-200	28 contacts →
	Partial evidence “Sammin Engineering is a dynamic Electrical Engineering services company that was founded in 2005.” Source: RevenueBase Database · checked Sep 16, 2026
18	Civic Group	Partial evidence	Greenogue Business Park, IrelandHQ checked Sep 16, 2026	11-50	25 contacts →
	Partial evidence “Civic Group was established in 2001 originally as an electrical installation and maintenance company.” Source: RevenueBase Database · checked Sep 16, 2026
19	Alfa Electrical LTD	Strong evidence	Dublin 12, IrelandHQ checked Sep 16, 2026	51-200	25 contacts →
	Strong evidence “Alfa Electrical is one of Ireland's leading electrical engineering contractors, delivering high-quality commercial, industrial, residential and retail projects nationwide.” Source: RevenueBase Database · checked Sep 16, 2026
20	Hvsm LTD	Indirect evidence	Ashbourne, IrelandHQ checked Sep 16, 2026	11-50	24 contacts →
	Indirect evidence “Established since 1991, HVSM is a wholly Irish owned company which is headquartered in Ireland but is present and operating globally.” Source: RevenueBase Database · checked Sep 16, 2026
21	J Vaughan Electrical Contractors LTD	Indirect evidence	Dublin, IrelandHQ checked Sep 16, 2026	51-200	23 contacts →
	Indirect evidence “Established in 1979, J.” Source: RevenueBase Database · checked Sep 16, 2026
22	H&f Electrical Contractors Limited	Strong evidence	Limerick, IrelandHQ checked Sep 16, 2026	51-200	22 contacts →
	Strong evidence “Established in 1989, H&F Electrical Contractors Ltd offer a wealth of experience and expertise across all market sectors in delivering electrical, instrumentation, data network…” Source: RevenueBase Database · checked Sep 16, 2026
23	Access Data Installations Ireland LTD	Indirect evidence	Co. Cork, IrelandHQ checked Sep 16, 2026	11-50	21 contacts →
	Indirect evidence “ADI(Ireland) Ltd.” Source: RevenueBase Database · checked Sep 16, 2026
24	Atex LTD	Indirect evidence	Dublin, IrelandHQ checked Sep 16, 2026	11-50	19 contacts →
	Indirect evidence “How to keep up with an ever-evolving industry of specialised EX Equipment, Lighting, Lighting Controls & Cable Management?” Source: RevenueBase Database · checked Sep 16, 2026
25	Armour Group	Partial evidence	Dunleer, IrelandHQ checked Sep 16, 2026	51-200	18 contacts →
	Partial evidence “Armour Group is a leading electrical contracting company delivering end-to-end solutions across commercial, industrial, infrastructure, and residential sectors.” Source: RevenueBase Database · checked Sep 16, 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: data center electrical contractors. 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 data center electrical contractors.
Partial evidence: Its own public description names part of data center electrical contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name data center electrical contractors. 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 157 data center electrical contractors based in Ireland

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Data center electrical contractors based in Ireland at a glance

As of Sep 16, 2026

44.6%Verified-email coverage

38.0Average contacts per company

11-50Median size (employees)

14.0%Largest-city concentration · Dublin

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for Ireland, so it is reported there. Company counts and contact totals on this page are exact for Ireland, over 157 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 data center electrical contractors, 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 Ireland whose own description of what they do matches “data center electrical contractors”. 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 data center electrical contractors), 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 data center electrical contractors, and records with no verified work email. Companies headquartered outside Ireland 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, 2,661 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 16, 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 data center electrical contractors, 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 data center electrical contractors are there based in Ireland?

RevenueBase identified 157 data center electrical contractors headquartered in Ireland 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?

Kirby Group Engineering, headquartered in Limerick, tops this list with the largest team on record.

Which city has the most data center electrical contractors?

Dublin leads with 22 headquartered companies, followed by Rathcoole (5) and Limerick (4).

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 2,661 verified decision-maker contacts tracked across these 157 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 16, 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.