Company lists · Data refreshed September 2026

Top 25 Industrial energy efficiency firms based in Ireland

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 71 companies tracked

RevenueBase identified 71 company matches for industrial energy efficiency firms associated with Ireland as of September 2026 and tracks 578 professional contacts across them, including 250 with verified work emails. Dublin is the largest hub.

This list covers company matches for industrial energy efficiency firms associated with Ireland, 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

71Companies

578Contacts tracked

250Verified emails

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The 25 largest industrial energy efficiency firms based in Ireland

Ranked by team size

Top 25 of 71 company matches for industrial energy efficiency firms based in Ireland, 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	Em3	Exact match	Limerick, IrelandHQ recorded Sep 17, 2026	51-200	87 contacts →
	Exact match “EM3 is an industrial energy engineering and advisory partner We work with energy-intensive organisations to drive efficiencies, reduce energy costs, and deliver on decarbonisation…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	SE Systems	Exact match	Cork, IrelandHQ recorded Sep 17, 2026	51-200	59 contacts →
	Exact match “SE Systems (Sustainable Energy Systems) is Ireland's leading energy solutions provider.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Swyft Energy	Exact match	Bishopstown, IrelandHQ recorded Sep 17, 2026	51-200	56 contacts →
	Exact match “Swyft Energy is an online platform that streamlines energy efficient upgrades for homeowner’s saving them time, hassle and money.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Verde Energy Group	Exact match	Little Island, IrelandHQ recorded Sep 17, 2026	11-50	31 contacts →
	Exact match “Verde Energy Group Delivering energy cost savings and carbon reduction solutions to Commercial & Industrial businesses since 2009.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Horizon Energy Group HEG	Exact match	Cork, IrelandHQ recorded Sep 17, 2026	11-50	26 contacts →
	Exact match “Horizon Energy Group delivers technology-led solutions that reduce energy costs, cut carbon and unlock new revenue opportunities.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	Lawler Sustainability	Exact match	Kilkenny, IrelandHQ recorded Sep 17, 2026	11-50	24 contacts →
	Exact match “Helping Businesses Cut Energy Costs by up to 50% & Accelerate Their Journey to Net Zero!” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	Clean Energy Ireland	Exact match	Aherla, IrelandHQ recorded Sep 17, 2026	11-50	18 contacts →
	Exact match “We offer customers the best products, services and advice to help lower energy costs and reduce their carbon footprint.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Mosart	Exact match	IrelandHQ recorded Sep 17, 2026	11-50	17 contacts →
	Exact match “Providing expert design, energy consulting & training in high performance buildings since 1993.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Symphony Energy	Exact match	Wicklow, IrelandHQ recorded Sep 17, 2026	11-50	17 contacts →
	Exact match “Symphony Energy is a global leader in optimising energy performance in the commercial built environment.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	WIA	Exact match	Dublin, IrelandHQ recorded Sep 17, 2026	1-10	10 contacts →
	Exact match “Wia is the energy intelligence platform for the world's largest building portfolios.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	Geaney Engineering Consultants	Exact match	Waterford, IrelandHQ recorded Sep 17, 2026	11-50	9 contacts →
	Exact match “Geaney Engineering Consultants are a building services consultancy, and energy management firm offering comprehensive engineering services, project management services, carbon…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Steam Esco	Exact match	Wexford, IrelandHQ recorded Sep 17, 2026	11-50	7 contacts →
	Exact match “Full steam system efficiency and reliability experts.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	EMC Electrical Mechanical Controls	Exact match	Oranmore, IrelandHQ recorded Sep 17, 2026	11-50	7 contacts →
	Exact match “EMC ltd, founded in 2001 is a leading supplier of Industrial Controls, Energy and Water saving Technologies, supporting Industrial, Retail and Commercial clients.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Episensor	Exact match	Limerick, IrelandHQ recorded Sep 17, 2026	11-50	7 contacts →
	Exact match “EpiSensor is a leading provider of wireless energy monitoring, environmental control and demand response infrastructure that uniquely combine reliability, ruggedness, and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Vivid Edge	Exact match	Ucd Belfield Dublin 4, IrelandHQ recorded Sep 17, 2026	1-10	6 contacts →
	Exact match “At Vivid Edge, we're passionate about helping our customers save precious time and funds while cutting carbon.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Codex Energy Consultants LTD	Exact match	Ballycoolin, IrelandHQ recorded Sep 17, 2026	1-10	6 contacts →
	Exact match “Codex Energy Consultants Ltd is a company of specialist engineering and energy consultants.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Fort Energy	Exact match	Galway, IrelandHQ recorded Sep 17, 2026	1-10	6 contacts →
	Exact match “Fort Energy is a specialist energy consulting firm to the SME, commercial and government sectors.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Quantum Energy Ireland	Exact match	3rd Floor, IrelandHQ recorded Sep 17, 2026	1-10	6 contacts →
	Exact match “Helping businesses of all sizes control their energy costs.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	e-volv.ie	Exact match	Ballinlough, IrelandHQ recorded Sep 17, 2026	1-10	6 contacts →
	Exact match “We are dedicated to helping homes and businesses save money & energy, provide energy upgrades and install renewable technology.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Dcsix Technologies	Exact match	Cork, IrelandHQ recorded Sep 17, 2026	1-10	5 contacts →
	Exact match “DCSix offer a range of energy monitoring and control solutions to a variety of markets.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Impact Energy Solutions	Exact match	Cork, IrelandHQ recorded Sep 17, 2026	1-10	4 contacts →
	Exact match “We assist clients reduce business costs through a suite of passive solutions.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	Scott Group Smart Buildings	Exact match	Raheny, IrelandHQ recorded Sep 17, 2026	11-50	3 contacts →
	Exact match “Specialties- Development & implementation of renewable energy & energy efficiency projects • Strategy development & investment planning • Energy savings planning & retrofits •…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Greenspark Analytics	Exact match	Dublin, IrelandHQ recorded Sep 17, 2026	1-10	3 contacts →
	Exact match “We are a dynamic energy trading company.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Cardienergy	Exact match	Wicklow, IrelandHQ recorded Sep 17, 2026	1-10	3 contacts →
	Exact match “Cardi Energy is a leading Energy Services Consultancy dedicated to revolutionising the energy landscape for commercial buildings.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Powertherm Solutions	Exact match	Blackrock, IrelandHQ recorded Sep 17, 2026	1-10	3 contacts →
	Exact match “PowerTherm Solutions was founded in 2002 and has since established itself as one of Ireland’s leading energy consultancies and energy-related services companies.” 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 71 industrial energy efficiency firms based in Ireland

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Industrial energy efficiency firms based in Ireland at a glance

As of Sep 17, 2026

43.3%Verified-email coverage

8.1Average contacts per company

1-10Median size (employees)

14.1%Largest-city concentration · Dublin

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

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 71 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 Ireland 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 250 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 Ireland?

RevenueBase identified 71 company matches for industrial energy efficiency firms associated with Ireland 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?

Em3 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?

Dublin leads with 10 company records, followed by Cork (6) and Waterford (4).

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 250 professional contacts with verified work emails tracked across these 71 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.

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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.