Company lists · Data refreshed September 2026

Top 25 Energy performance contracting companies based in Ireland

Name: Energy performance contracting companies based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 67 companies tracked

RevenueBase identified 67 energy performance contracting companies headquartered in Ireland as of September 2026 and tracks 543 professional contacts across them, including 230 with verified work emails. Dublin is the largest hub.

This list covers energy performance contracting companies 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

67Companies

543Contacts tracked

230Verified emails

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The 25 largest energy performance contracting companies based in Ireland

Ranked by team size

Top 25 of 67 energy performance contracting companies 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 energy performance contracting companies: 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	Em3	Partial evidence	Limerick, IrelandHQ checked Sep 16, 2026	51-200	87 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026
2	SE Systems	Partial evidence	Cork, IrelandHQ checked Sep 16, 2026	51-200	59 contacts →
	Partial evidence “SE Systems (Sustainable Energy Systems) is Ireland's leading energy solutions provider.” Source: RevenueBase Database · checked Sep 16, 2026
3	Ashgrove Renewables	Partial evidence	Cork, IrelandHQ checked Sep 16, 2026	51-200	33 contacts →
	Partial evidence “We take great pride in our data-driven, scientific approach to energy solutions, spearheaded by a team known for its experience and creative design skills.” Source: RevenueBase Database · checked Sep 16, 2026
4	Verde Energy Group	Partial evidence	Little Island, IrelandHQ checked Sep 16, 2026	11-50	31 contacts →
	Partial evidence “Verde Energy Group Delivering energy cost savings and carbon reduction solutions to Commercial & Industrial businesses since 2009.” Source: RevenueBase Database · checked Sep 16, 2026
5	Horizon Energy Group HEG	Partial evidence	Cork, IrelandHQ checked Sep 16, 2026	11-50	26 contacts →
	Partial evidence “Horizon Energy Group delivers technology-led solutions that reduce energy costs, cut carbon and unlock new revenue opportunities.” Source: RevenueBase Database · checked Sep 16, 2026
6	Lawler Sustainability	Partial evidence	Kilkenny, IrelandHQ checked Sep 16, 2026	11-50	24 contacts →
	Partial evidence “Helping Businesses Cut Energy Costs by up to 50% & Accelerate Their Journey to Net Zero!” Source: RevenueBase Database · checked Sep 16, 2026
7	Clean Energy Ireland	Partial evidence	Aherla, IrelandHQ checked Sep 16, 2026	11-50	18 contacts →
	Partial evidence “We offer customers the best products, services and advice to help lower energy costs and reduce their carbon footprint.” Source: RevenueBase Database · checked Sep 16, 2026
8	Mosart	Strong evidence	IrelandHQ checked Sep 16, 2026	11-50	17 contacts →
	Strong evidence “Providing expert design, energy consulting & training in high performance buildings since 1993.” Source: RevenueBase Database · checked Sep 16, 2026
9	Symphony Energy	Strong evidence	Wicklow, IrelandHQ checked Sep 16, 2026	11-50	17 contacts →
	Strong evidence “Symphony Energy is a global leader in optimising energy performance in the commercial built environment.” Source: RevenueBase Database · checked Sep 16, 2026
10	Frontline Energy	Partial evidence	Dublin 4, IrelandHQ checked Sep 16, 2026	11-50	15 contacts →
	Partial evidence “We are energy innovators and pride ourselves in delivering an end to end range of expertise for the built environment that saves energy, carbon, time and cost.” Source: RevenueBase Database · checked Sep 16, 2026
11	Digren Energy	Partial evidence	Co. Dublin, IrelandHQ checked Sep 16, 2026	11-50	14 contacts →
	Partial evidence “We are an energy management consultancy.” Source: RevenueBase Database · checked Sep 16, 2026
12	Geaney Engineering Consultants	Partial evidence	Waterford, IrelandHQ checked Sep 16, 2026	11-50	9 contacts →
	Partial evidence “Geaney Engineering Consultants are a building services consultancy, and energy management firm offering comprehensive engineering services, project management services, carbon…” Source: RevenueBase Database · checked Sep 16, 2026
13	ENSEN	Partial evidence	Riverstown Po, IrelandHQ checked Sep 16, 2026	11-50	7 contacts →
	Partial evidence “Energy Sustainability Environment ENSEN is a concept – implementation of sustainable principals through the delivery of Energy and Environmental products and services in a…” Source: RevenueBase Database · checked Sep 16, 2026
14	Vivid Edge	Indirect evidence	Ucd Belfield Dublin 4, IrelandHQ checked Sep 16, 2026	1-10	6 contacts →
	Indirect evidence “At Vivid Edge, we're passionate about helping our customers save precious time and funds while cutting carbon.” Source: RevenueBase Database · checked Sep 16, 2026
15	Codex Energy Consultants LTD	Partial evidence	Ballycoolin, IrelandHQ checked Sep 16, 2026	1-10	6 contacts →
	Partial evidence “Codex Energy Consultants Ltd is a company of specialist engineering and energy consultants.” Source: RevenueBase Database · checked Sep 16, 2026
16	Arden Energy	Partial evidence	Dublin, IrelandHQ checked Sep 16, 2026	1-10	6 contacts →
	Partial evidence “Arden is an integrated energy management services and energy supply company.” Source: RevenueBase Database · checked Sep 16, 2026
17	Quantum Energy Ireland	Partial evidence	3rd Floor, IrelandHQ checked Sep 16, 2026	1-10	6 contacts →
	Partial evidence “Helping businesses of all sizes control their energy costs.” Source: RevenueBase Database · checked Sep 16, 2026
18	Fort Energy	Partial evidence	Galway, IrelandHQ checked Sep 16, 2026	1-10	6 contacts →
	Partial evidence “Fort Energy is a specialist energy consulting firm to the SME, commercial and government sectors.” Source: RevenueBase Database · checked Sep 16, 2026
19	e-volv.ie	Partial evidence	Ballinlough, IrelandHQ checked Sep 16, 2026	1-10	6 contacts →
	Partial evidence “We are dedicated to helping homes and businesses save money & energy, provide energy upgrades and install renewable technology.” Source: RevenueBase Database · checked Sep 16, 2026
20	Impact Energy Solutions	Indirect evidence	Cork, IrelandHQ checked Sep 16, 2026	1-10	4 contacts →
	Indirect evidence “We assist clients reduce business costs through a suite of passive solutions.” Source: RevenueBase Database · checked Sep 16, 2026
21	Scott Group Smart Buildings	Partial evidence	Raheny, IrelandHQ checked Sep 16, 2026	11-50	3 contacts →
	Partial evidence “Specialties- Development & implementation of renewable energy & energy efficiency projects • Strategy development & investment planning • Energy savings planning & retrofits •…” Source: RevenueBase Database · checked Sep 16, 2026
22	Cardienergy	Partial evidence	Wicklow, IrelandHQ checked Sep 16, 2026	1-10	3 contacts →
	Partial evidence “Cardi Energy is a leading Energy Services Consultancy dedicated to revolutionising the energy landscape for commercial buildings.” Source: RevenueBase Database · checked Sep 16, 2026
23	Powertherm Solutions	Partial evidence	Blackrock, IrelandHQ checked Sep 16, 2026	1-10	3 contacts →
	Partial evidence “PowerTherm Solutions was founded in 2002 and has since established itself as one of Ireland’s leading energy consultancies and energy-related services companies.” Source: RevenueBase Database · checked Sep 16, 2026
24	ISO Baseline LTD	Partial evidence	Carrigaline, IrelandHQ checked Sep 16, 2026	1-10	3 contacts →
	Partial evidence “Energy Management for the 21st Century: Baseline has been developed for the energy manager that wants to focus their efforts towards energy management using a structured approach.” Source: RevenueBase Database · checked Sep 16, 2026
25	Century Retrofit LTD	Indirect evidence	Galway, IrelandHQ checked Sep 16, 2026	11-50	2 contacts →
	Indirect evidence 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: energy performance contracting companies. 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 energy performance contracting companies.
Partial evidence: Its own public description names part of energy performance contracting companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy performance contracting companies. 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 67 energy performance contracting companies based in Ireland

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Energy performance contracting companies based in Ireland at a glance

As of Sep 16, 2026

42.4%Verified-email coverage

8.1Average contacts per company

1-10Median size (employees)

17.9%Largest-city concentration · Dublin

Sep 16, 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 67 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 energy performance contracting companies, 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 “energy performance contracting companies”. 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 energy performance contracting companies), 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 energy performance contracting companies, 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, 230 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 energy performance contracting companies, 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 energy performance contracting companies are there based in Ireland?

RevenueBase identified 67 energy performance contracting companies 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?

Em3, headquartered in Limerick, tops this list with the largest team on record.

Which city has the most energy performance contracting companies?

Dublin leads with 12 headquartered companies, 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 the top results, verified emails and direct dials included. Upgrading unlocks all 230 verified decision-maker contacts tracked across these 67 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.