Company lists · Data refreshed September 2026

Top 25 Energy efficiency consulting firms based in Ireland

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

Compiled by the RevenueBase Data Team Data refreshed Sep 2, 2026 97 companies tracked

RevenueBase identified 97 company matches for energy efficiency consulting firms associated with Ireland as of September 2026 and tracks 621 professional contacts across them, including 254 with verified work emails and 34 with mobile numbers. Dublin is the largest hub.

This list covers company matches for energy efficiency consulting 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 2, 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 2, 2026 How this list was built

97Companies

621Contacts tracked

254Verified emails

34Mobile numbers

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

The 25 largest energy efficiency consulting firms based in Ireland

Ranked by team size

Top 25 of 97 company matches for energy efficiency consulting firms based in Ireland, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 2, 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, Ireland	51-200	86 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 2, 2026 · View company records in RevenueBase
2	SE Systems	Exact match	Cork, Ireland	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 2, 2026 · View company records in RevenueBase
3	KSN Energy	Exact match	Dublin, Ireland	51-200	32 contacts →
	Exact match “Complex operations made simple.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
4	Mosart	Exact match	Ireland	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 2, 2026 · View company records in RevenueBase
5	Symphony Energy	Exact match	Wicklow, Ireland	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 2, 2026 · View company records in RevenueBase
6	Passive Dynamics	Exact match	Dublin, Ireland	11-50	15 contacts →
	Exact match “Passive Dynamics was set up in 2020 with a vision that expert knowledge and passion can empower.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
7	Frontline Energy	Exact match	Dublin, Ireland	11-50	15 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
8	Digren Energy	Exact match	Ireland	11-50	14 contacts →
	Exact match “We are an energy management consultancy.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
9	ENX	Exact match	Ireland	11-50	14 contacts →
	Exact match “Mechanical, Electrical and Sustainability Consulting Engineers” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
10	Systemcore	Exact match	Dublin, Ireland	11-50	14 contacts →
	Exact match “We are the next generation of M&E consulting engineers, dedicated to designing systems for low-carbon, intelligent, self-optimising spaces that enhance occupant well-being, and…” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
11	BPC Engineers	Exact match	Dublin, Ireland	11-50	12 contacts →
	Exact match “Building Performance Consulting Engineers Ltd.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
12	Kore Energy	Exact match	Ireland	11-50	11 contacts →
	Exact match “Kore Energy is Ireland’s market leader in energy consultancy for large energy users.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
13	Meehan Green, A KEO Company	Exact match	Ireland	11-50	11 contacts →
	Exact match “Meehan Green is a company based in Dublin, Ireland that provides sustainability and green building certifications consulting services.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
14	energybroker.ie	Exact match	Ireland	1-10	10 contacts →
	Exact match “Trusted by Irish business owners to lower energy costs.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
15	Geaney Engineering Consultants	Exact match	Waterford, Ireland	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 2, 2026 · View company records in RevenueBase
16	Ecoaer	Exact match	Ireland	11-50	7 contacts →
	Exact match “Working in the field of ventilation and energy solutions since 1995 in Ireland and the UK, we are experienced professionals renowned for our knowledge, reliability and…” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
17	ENSEN	Exact match	Xxx, Ireland	11-50	7 contacts →
	Exact match “Energy Sustainability Environment ENSEN is a concept – implementation of sustainable principals through the delivery of Energy and Environmental products and services in a…” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
18	Codex Energy Consultants LTD	Exact match	Ireland	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 2, 2026 · View company records in RevenueBase
19	Vivid Edge	Exact match	Dublin, Ireland	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 2, 2026 · View company records in RevenueBase
20	Quantum Energy Ireland	Exact match	Cork, Ireland	1-10	6 contacts →
	Exact match “Helping businesses of all sizes control their energy costs.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
21	Fort Energy	Exact match	Galway, Ireland	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 2, 2026 · View company records in RevenueBase
22	e-volv.ie	Exact match	Ballinlough, Ireland	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 2, 2026 · View company records in RevenueBase
23	bercerts.ie	Exact match	Ireland	1-10	5 contacts →
	Exact match “Joseph Kearney set up BERcerts.ie in January 2008.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
24	Evia Sustainable Real Estate Limited	Exact match	Dublin, Ireland	11-50	4 contacts →
	Exact match “At Evia, we merge our property expertise with a deep commitment to environmental leadership, ensuring the protection and enhancement of real estate assets.” Recorded in the RevenueBase company graph · Sep 2, 2026 · View company records in RevenueBase
25	Energy Reform Limited	Exact match	Dublin, Ireland	1-10	4 contacts →
	Exact match “Energy Reform is a company providing consulting services in the field of conventional and renewable energy.” Recorded in the RevenueBase company graph · Sep 2, 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 “energy efficiency consulting 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 97 energy efficiency consulting firms based in Ireland

See the full list, filter by size, metro and specialty, and access 254 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Energy efficiency consulting firms based in Ireland at a glance

As of Sep 2, 2026

40.9%Verified-email coverage

5.5%Mobile-number coverage

6.4Average contacts per company

1-10Median size (employees)

21.6%Largest-city concentration · Dublin

Sep 2, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

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 “energy efficiency consulting 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 254 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 2, 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 “energy efficiency consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many energy efficiency consulting firms are there based in Ireland?

RevenueBase identified 97 company matches for energy efficiency consulting 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 energy efficiency consulting firms?

Dublin leads with 21 company records, followed by Cork (6) and Waterford (5).

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 254 professional contacts with verified work emails tracked across these 97 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 2, 2026.

Ready to reach these companies? Verified emails and direct dials for all 97 energy efficiency consulting firms based in Ireland. Start with a free account, no credit card.

Download this list →

Related lists

Energy efficiency consulting 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.