Company lists · Data refreshed September 2026

Top 25 Energy efficient companies based in Ireland

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

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 73 companies tracked

RevenueBase identified 73 energy efficient companies headquartered in Ireland as of September 2026 and tracks 686 professional contacts across them, including 236 with verified work emails. Dublin is the largest hub.

This list covers energy efficient 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 21, 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 21, 2026 86% judged on-target in blind review

73Companies

686Contacts tracked

236Verified emails

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

The 25 largest energy efficient companies based in Ireland

Ranked by team size

Top 25 of 73 energy efficient companies based in Ireland, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to energy efficient 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	Robus Lighting	Indirect evidence	Dublin, IrelandHQ checked Sep 21, 2026	201-500	195 contacts →
	Indirect evidence “Designing and manufacturing LED Lighting products under the ROBUS brand, the LED Group was established in Dublin in 1984 by Michael Slein.” Source: RevenueBase Database · checked Sep 21, 2026
2	Dlight	Indirect evidence	Tramore, IrelandHQ checked Sep 21, 2026	11-50	80 contacts →
	Indirect evidence “Founded in 2007, Dlight Lighting has evolved into a global company that designs, engineers and produces lighting solutions with new sustainable LED collections for residential…” Source: RevenueBase Database · checked Sep 21, 2026
3	SE Systems	Partial evidence	Cork, IrelandHQ checked Sep 21, 2026	51-200	59 contacts →
	Partial evidence “SE Systems (Sustainable Energy Systems) is Ireland's leading energy solutions provider.” Source: RevenueBase Database · checked Sep 21, 2026
4	Verde Energy Group	Partial evidence	Little Island, IrelandHQ checked Sep 21, 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 21, 2026
5	Solarsmart Energy LTD	Indirect evidence	Dublin, IrelandHQ checked Sep 21, 2026	11-50	26 contacts →
	Indirect evidence “SolarSmart enables Irish homeowners, farmers and business owners to generate and harness their own electricity supply from sunlight.” Source: RevenueBase Database · checked Sep 21, 2026
6	Clean Energy Ireland	Partial evidence	Aherla, IrelandHQ checked Sep 21, 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 21, 2026
7	Pro-Light Design & Technology	Indirect evidence	Sandyford, IrelandHQ checked Sep 21, 2026	11-50	16 contacts →
	Indirect evidence “WE TRANSFORM COMMERCIAL SPACES THROUGH THE MEDIUM OF LIGHTING OUR CLIENTS - Designers, Architects, Retailers, Property Investors, Fit Out Contractors, Facilities Managers, Etc.” Source: RevenueBase Database · checked Sep 21, 2026
8	Solgrid LTD	Indirect evidence	Loughrea, IrelandHQ checked Sep 21, 2026	11-50	13 contacts →
	Indirect evidence “Solgrid is a leading Solar PV provider.” Source: RevenueBase Database · checked Sep 21, 2026
9	Lennon Solar	Partial evidence	IrelandHQ checked Sep 21, 2026	11-50	9 contacts →
	Partial evidence “At lennon solar, we are passionate about providing sustainable and affordable energy solutions to our clients.” Source: RevenueBase Database · checked Sep 21, 2026
10	Next-Gen Power	Partial evidence	Drogheda, IrelandHQ checked Sep 21, 2026	11-50	7 contacts →
	Partial evidence “A little more about us- Next-Gen provide green energy solutions powered by the sun.” Source: RevenueBase Database · checked Sep 21, 2026
11	Going Solar	Partial evidence	Dublin, IrelandHQ checked Sep 21, 2026	51-200	7 contacts →
	Partial evidence “At Going Solar, we specialise in providing sustainable energy solutions for homes and businesses.” Source: RevenueBase Database · checked Sep 21, 2026
12	SUN ARC Solar Systems	Partial evidence	Carlow, IrelandHQ checked Sep 21, 2026	11-50	7 contacts →
	Partial evidence “We understand the importance of reducing carbon footprints, cutting energy costs, and contributing to a brighter, more sustainable future.” Source: RevenueBase Database · checked Sep 21, 2026
13	Lidacel LTD	Indirect evidence	Dublin, IrelandHQ checked Sep 21, 2026	1-10	6 contacts →
	Indirect evidence “LIDACEL Ltd are one of Irelands leading distributors for commercial lighting and lighting controls.” Source: RevenueBase Database · checked Sep 21, 2026
14	Vivid Edge	Indirect evidence	Ucd Belfield Dublin 4, IrelandHQ checked Sep 21, 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 21, 2026
15	Fantasy Lights Group	Indirect evidence	Dublin 12, IrelandHQ checked Sep 21, 2026	11-50	5 contacts →
	Indirect evidence “Fantasy Lights provide lighting solutions to a varied range of customers, from domestic to large corporate and state bodies.” Source: RevenueBase Database · checked Sep 21, 2026
16	Hi-Volt Group	Indirect evidence	Thurles, IrelandHQ checked Sep 21, 2026	11-50	5 contacts →
	Indirect evidence “Established in 1998, Hi-Volt is a leading provider of high-quality electrical solutions specializing in batteries, led lighting, recycling and more.” Source: RevenueBase Database · checked Sep 21, 2026
17	Waveguide	Indirect evidence	Kinsealy Lane, IrelandHQ checked Sep 21, 2026	11-50	5 contacts →
	Indirect evidence “We’re a design-led, full turnkey lighting and electrical solutions provider specialising in the latest LED Lighting Technology, Electrical Contracting & Maintenance and Commercial…” Source: RevenueBase Database · checked Sep 21, 2026
18	Vision Solar	Partial evidence	Limerick, IrelandHQ checked Sep 21, 2026	11-50	5 contacts →
	Partial evidence “Vision Solar is a leading provider of solar energy solutions in Ireland, dedicated to reducing energy costs and promoting sustainability.” Source: RevenueBase Database · checked Sep 21, 2026
19	Hybrid Energy Group	Partial evidence	Cavan, IrelandHQ checked Sep 21, 2026	1-10	5 contacts →
	Partial evidence “Hybrid Energy Group Business All Star Renewable Energy Company 2023 for second year in a row.” Source: RevenueBase Database · checked Sep 21, 2026
20	Britelux Lighting	Indirect evidence	Mount Merrion, IrelandHQ checked Sep 21, 2026	1-10	4 contacts →
	Indirect evidence “Britelux Lighting was established as a Company to source and supply designer decorative lighting to Architects, Interior Designers, Consulting Engineers, Electrical Contractors…” Source: RevenueBase Database · checked Sep 21, 2026
21	Solar Path	Partial evidence	Cork, IrelandHQ checked Sep 21, 2026	11-50	4 contacts →
	Partial evidence “Solar Path is committed to providing eco-friendly and cost-effective solutions that enable our customers to transition to clean and renewable energy.” Source: RevenueBase Database · checked Sep 21, 2026
22	Energy Automation Systems	Partial evidence	Ennis, IrelandHQ checked Sep 21, 2026	11-50	4 contacts →
	Partial evidence “At EASi, we are committed to providing the future of efficient, smart and sustainable lighting for industrial, commercial and medical sectors.” Source: RevenueBase Database · checked Sep 21, 2026
23	Impact Energy Solutions	Indirect evidence	Cork, IrelandHQ checked Sep 21, 2026	1-10	4 contacts →
	Indirect evidence “We assist clients reduce business costs through a suite of passive solutions.” Source: RevenueBase Database · checked Sep 21, 2026
24	Scott Group Smart Buildings	Strong evidence	Raheny, IrelandHQ checked Sep 21, 2026	11-50	3 contacts →
	Strong evidence “Specialties- Development & implementation of renewable energy & energy efficiency projects • Strategy development & investment planning • Energy savings planning & retrofits •…” Source: RevenueBase Database · checked Sep 21, 2026
25	Fibreled	Indirect evidence	Dublin, IrelandHQ checked Sep 21, 2026	11-50	3 contacts →
	Indirect evidence “FibreLED is Irelands leading LED lighting manufacturer.” Source: RevenueBase Database · checked Sep 21, 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 efficient 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 efficient companies.
Partial evidence: Its own public description names part of energy efficient companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy efficient 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 73 energy efficient companies based in Ireland

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 236 reachable decision-makers.

Free signup · no credit card

View the full list →

Energy efficient companies based in Ireland at a glance

As of Sep 21, 2026

34.4%Verified-email coverage

9.4Average contacts per company

11-50Median size (employees)

19.2%Largest-city concentration · Dublin

Sep 21, 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 73 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 efficient 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 efficient 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 efficient 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 efficient 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, 236 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 21, 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 efficient 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 efficient companies are there based in Ireland?

RevenueBase identified 73 energy efficient 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?

Robus Lighting, headquartered in Dublin, tops this list with the largest team on record.

Which city has the most energy efficient companies?

Dublin leads with 14 headquartered companies, followed by Cork (3) and Trim (2).

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 236 verified decision-maker contacts tracked across these 73 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 21, 2026.

Ready to reach these companies? Verified emails and direct dials for all 73 energy efficient companies based in Ireland. Start with a free account, no credit card.

Download this list →

Related lists

Energy efficient companies 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 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.