Company lists · Data refreshed October 2026

Top 25 Energy star certified contractors based in Ireland

Name: Energy star certified contractors based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 12, 2026 80 companies tracked

RevenueBase identified 80 company matches for energy star certified contractors associated with Ireland as of October 2026 and tracks 737 professional contacts across them, including 294 with verified work emails. Dublin is the largest hub.

This list covers company matches for energy star certified contractors 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 October 12, 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 Oct 12, 2026 How this list was built

80Companies

737Contacts tracked

294Verified emails

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The 25 largest energy star certified contractors based in Ireland

Ranked by team size

Top 25 of 80 company matches for energy star certified contractors based in Ireland, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 12, 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	SE Systems	Exact match	Cork, IrelandHQ recorded Oct 12, 2026	51-200	57 contacts →
	Exact match “SE Systems (Sustainable Energy Systems) is Ireland's leading energy solutions provider.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
2	Electric Ireland Superhomes	Exact match	Thurles, IrelandHQ recorded Oct 12, 2026	11-50	46 contacts →
	Exact match “Electric Ireland Superhomes is a One Stop Shop which looks after all the key stages of a home energy retrofit, from retrofit design through to project completion and management of…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
3	Swyft Energy	Exact match	Bishopstown, IrelandHQ recorded Oct 12, 2026	51-200	46 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 · Oct 12, 2026 · View company records in RevenueBase
4	Energystore	Exact match	Holywood, IrelandHQ recorded Oct 12, 2026	51-200	45 contacts →
	Exact match “Energystore is rethinking construction with free-flowing insulation.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5	Coolsivna Construction LTD	Exact match	Mount Bellew Bridge, IrelandHQ recorded Oct 12, 2026	201-500	44 contacts →
	Exact match “Coolsivna Construction is a young vibrant construction company providing reliable, efficient, hands on service for medium to large sized construction projects.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
6	Ashgrove Renewables	Exact match	Cork, IrelandHQ recorded Oct 12, 2026	51-200	37 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
7	Verde Energy Group	Exact match	Little Island, IrelandHQ recorded Oct 12, 2026	11-50	28 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 · Oct 12, 2026 · View company records in RevenueBase
8	House 2 Home Retrofit LTD	Exact match	Dublin 12, IrelandHQ recorded Oct 12, 2026	11-50	20 contacts →
	Exact match “House 2 Home has been Ireland's leading 'one stop shop' for energy upgrades since 2013.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
9	Symphony Energy	Exact match	Wicklow, IrelandHQ recorded Oct 12, 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 · Oct 12, 2026 · View company records in RevenueBase
10	Breffni Insulation	Exact match	Kilnaleck, IrelandHQ recorded Oct 12, 2026	11-50	16 contacts →
	Exact match “Breffni Insulation was founded in 2006 and the company is registered and compliant with standards as per the National Standards Authority of Ireland (NSAI), Sustainable Energy…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11	Energlaze Home Energy Upgrades	Exact match	Wexford, IrelandHQ recorded Oct 12, 2026	11-50	16 contacts →
	Exact match “At Energlaze Home Energy Upgrades, not only are we committed to improving the overall comfort of your home, but we are also focused on reducing your energy costs and can help you…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12	Frontline Energy	Exact match	Dublin 4, IrelandHQ recorded Oct 12, 2026	11-50	13 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 · Oct 12, 2026 · View company records in RevenueBase
13	ENCON	Exact match	Waterford, IrelandHQ recorded Oct 12, 2026	11-50	13 contacts →
	Exact match “Encon is a sustainable building, retrofit, and renewables company committed to transforming how Ireland builds, renovates, and powers its spaces.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
14	NRG Panel	Exact match	Castleblayney, IrelandHQ recorded Oct 12, 2026	51-200	12 contacts →
	Exact match “NRG Panel are one of Ireland's leading installers of solar panels and air to water heat pumps.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
15	Blackwell Energy	Exact match	Dublin 6, IrelandHQ recorded Oct 12, 2026	51-200	11 contacts →
	Exact match “Blackwell Energy design, supply & install home and business energy services such as solar PV, air source heat pumps, retrofit underfloor heating, air conditioning, deep retrofit…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
16	Integrate Home Energy Upgrades	Exact match	Newtownmountkennedy, IrelandHQ recorded Oct 12, 2026	1-10	7 contacts →
	Exact match “Integrate Home Energy Upgrades is a One-Stop-Shop retrofit service provider based in Wicklow town.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17	Apex Controls Limited	Exact match	Sligo, IrelandHQ recorded Oct 12, 2026	51-200	7 contacts →
	Exact match “REFRIGERATION We design, supply and fit, efficient cost-saving refrigeration systems that not only meet your needs but also help you save on energy costs.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
18	bercerts.ie	Exact match	Navan, IrelandHQ recorded Oct 12, 2026	1-10	7 contacts →
	Exact match “Joseph Kearney set up BERcerts.ie in January 2008.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
19	Envirobead LTD	Exact match	Cork, IrelandHQ recorded Oct 12, 2026	11-50	7 contacts →
	Exact match “Your #OneStopShop SEAI approved specialists with complete home energy upgrade solutions.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
20	Homeology Retrofit	Exact match	Meath, IrelandHQ recorded Oct 12, 2026	11-50	6 contacts →
	Exact match “Welcome to Homeology, your trusted partner for home retrofitting and renovations.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
21	MOS Mechanical	Exact match	Summerhill, IrelandHQ recorded Oct 12, 2026	11-50	6 contacts →
	Exact match “MOS Mechanical - previously Mick O’ Shea Heating & Plumbing is part of the MJOS Group including Home Comfort Retrofits and MSM Renewables which has been providing high-quality…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
22	Solar Path	Exact match	Cork, IrelandHQ recorded Oct 12, 2026	11-50	5 contacts →
	Exact match “Solar Path is committed to providing eco-friendly and cost-effective solutions that enable our customers to transition to clean and renewable energy.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
23	Kingdom Installation LTD	Exact match	Abbeydorney, IrelandHQ recorded Oct 12, 2026	11-50	5 contacts →
	Exact match “AWARD winning Kingdom Installation Ltd is a privately owned company with over 20 years’ experience in the supply and installation of energy efficiency solutions to the Domestic…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
24	Vivid Edge	Exact match	Ucd Belfield Dublin 4, IrelandHQ recorded Oct 12, 2026	1-10	5 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 · Oct 12, 2026 · View company records in RevenueBase
25	Mosart	Exact match	IrelandHQ recorded Oct 12, 2026	11-50	4 contacts →
	Exact match “Providing expert design, energy consulting & training in high performance buildings since 1993.” Recorded in the RevenueBase company graph · Oct 12, 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 star certified contractors”. 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 80 energy star certified contractors based in Ireland

See the full list, filter by size, metro and specialty, and access 294 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Energy star certified contractors based in Ireland at a glance

As of Oct 12, 2026

39.9%Verified-email coverage

9.2Average contacts per company

11-50Median size (employees)

13.8%Largest-city concentration · Dublin

Oct 12, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 80 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 “energy star certified contractors” 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 294 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 October 12, 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 star certified contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many energy star certified contractors are there based in Ireland?

RevenueBase identified 80 company matches for energy star certified contractors associated with Ireland as of October 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?

SE Systems tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most energy star certified contractors?

Dublin leads with 11 company records, followed by Cork (4) and Waterford (3).

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 294 professional contacts with verified work emails tracked across these 80 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 October 12, 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.