Company lists · Data refreshed September 2026

Top 25 Sustainable energy consultants based in Ireland

Name: Sustainable energy consultants based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 18, 2026 150 companies tracked

RevenueBase identified 150 sustainable energy consultants headquartered in Ireland as of September 2026 and tracks 2,114 professional contacts across them, including 749 with verified work emails. Dublin is the largest hub.

This list covers sustainable energy consultants 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 18, 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 18, 2026 86% judged on-target in blind review

150Companies

2,114Contacts tracked

749Verified emails

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The 25 largest sustainable energy consultants based in Ireland

Ranked by team size

Top 25 of 150 sustainable energy consultants based in Ireland, ranked by team size, largest first. Data refreshed Sep 18, 2026. RevenueBase Smart Search rates how each company's information relates to sustainable energy consultants: 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	SSE Airtricity	Partial evidence	IrelandHQ checked Sep 18, 2026	501-1,000	661 contacts →
	Partial evidence “SSE Airtricity has been harnessing our greatest natural resource for the past 25 years, providing cleaner, renewable energy† for homes and businesses across the country.” Source: RevenueBase Database · checked Sep 18, 2026
2	Tritech Engineering	Partial evidence	Dublin 22, IrelandHQ checked Sep 18, 2026	201-500	173 contacts →
	Partial evidence “Driving ESG Success Through Precision Engineering Investors today face increasing pressure to achieve higher building performance standards, meet strict sustainability targets…” Source: RevenueBase Database · checked Sep 18, 2026
3	Pinergy	Partial evidence	Dublin, IrelandHQ checked Sep 18, 2026	51-200	100 contacts →
	Partial evidence “Pinergy is an energy transition company We’re helping our customers make data informed choices today, to take control of their energy tomorrows.” Source: RevenueBase Database · checked Sep 18, 2026
4	Electroroute	Partial evidence	Dublin, IrelandHQ checked Sep 18, 2026	51-200	98 contacts →
	Partial evidence “ElectroRoute is an international, renewables focused, energy trading and services company.” Source: RevenueBase Database · checked Sep 18, 2026
5	Astatine LTD	Partial evidence	Dublin, IrelandHQ checked Sep 18, 2026	51-200	90 contacts →
	Partial evidence “Astatine is a leading innovator in energy and C02 reduction solutions, particularly in the decarbonisation of industrial high - grade heat (incl.” Source: RevenueBase Database · checked Sep 18, 2026
6	SE Systems	Strong evidence	Cork, IrelandHQ checked Sep 18, 2026	51-200	59 contacts →
	Strong evidence “SE Systems (Sustainable Energy Systems) is Ireland's leading energy solutions provider.” Source: RevenueBase Database · checked Sep 18, 2026
7	Galetech Group	Strong evidence	Stradone, IrelandHQ checked Sep 18, 2026	51-200	45 contacts →
	Strong evidence “Galetech Group is a leading Irish renewable energy company delivering smart, end-to-end clean energy solutions for clients across wind, solar, energy storage, sustainable…” Source: RevenueBase Database · checked Sep 18, 2026
8	Climeaction	Indirect evidence	Cork, IrelandHQ checked Sep 18, 2026	11-50	42 contacts →
	Indirect evidence “Climeaction Cork & Boston \| B Corp Certified \| ISO 9001 & Accredited Climeaction is an industrial decarbonisation and carbon intelligence company.” Source: RevenueBase Database · checked Sep 18, 2026
9	Ashgrove Renewables	Partial evidence	Cork, IrelandHQ checked Sep 18, 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 18, 2026
10	Verde Energy Group	Partial evidence	Little Island, IrelandHQ checked Sep 18, 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 18, 2026
11	Alternative Energy Ireland	Partial evidence	Dublin 12, IrelandHQ checked Sep 18, 2026	1-10	27 contacts →
	Partial evidence “Renewable Energy installation company specialising in taking a broad view of a companies' energy requirements.” Source: RevenueBase Database · checked Sep 18, 2026
12	Horizon Energy Group HEG	Partial evidence	Cork, IrelandHQ checked Sep 18, 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 18, 2026
13	Lawler Sustainability	Partial evidence	Kilkenny, IrelandHQ checked Sep 18, 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 18, 2026
14	Plan Energy	Partial evidence	Sligo, IrelandHQ checked Sep 18, 2026	11-50	18 contacts →
	Partial evidence “Welcome to Plan Energy, your trusted partner in decarbonisation and renewable energy.” Source: RevenueBase Database · checked Sep 18, 2026
15	Clean Energy Ireland	Partial evidence	Aherla, IrelandHQ checked Sep 18, 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 18, 2026
16	Mosart	Partial evidence	IrelandHQ checked Sep 18, 2026	11-50	17 contacts →
	Partial evidence “Providing expert design, energy consulting & training in high performance buildings since 1993.” Source: RevenueBase Database · checked Sep 18, 2026
17	Passive Dynamics	Indirect evidence	Dublin, IrelandHQ checked Sep 18, 2026	11-50	15 contacts →
	Indirect evidence “Passive Dynamics was set up in 2020 with a vision that expert knowledge and passion can empower.” Source: RevenueBase Database · checked Sep 18, 2026
18	Frontline Energy	Partial evidence	Dublin 4, IrelandHQ checked Sep 18, 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 18, 2026
19	Digren Energy	Strong evidence	Co. Dublin, IrelandHQ checked Sep 18, 2026	11-50	14 contacts →
	Strong evidence “We are an energy management consultancy.” Source: RevenueBase Database · checked Sep 18, 2026
20	Solgrid LTD	Indirect evidence	Loughrea, IrelandHQ checked Sep 18, 2026	11-50	13 contacts →
	Indirect evidence “Solgrid is a leading Solar PV provider.” Source: RevenueBase Database · checked Sep 18, 2026
21	Lp3	Partial evidence	Galway, IrelandHQ checked Sep 18, 2026	11-50	13 contacts →
	Partial evidence “LP3 is an experienced and dynamic company providing specialist and dedicated services to the Renewable Energy sector across Ireland.” Source: RevenueBase Database · checked Sep 18, 2026
22	ENX	Partial evidence	Dublin, IrelandHQ checked Sep 18, 2026	11-50	13 contacts →
	Partial evidence “Mechanical, Electrical and Sustainability Consulting Engineers” Source: RevenueBase Database · checked Sep 18, 2026
23	Greensource LTD	Strong evidence	Limerick, IrelandHQ checked Sep 18, 2026	11-50	13 contacts →
	Strong evidence “Greensource is an Irish renewable energy group that focuses on sustainable power generation.” Source: RevenueBase Database · checked Sep 18, 2026
24	Copper Coast Renewables	Partial evidence	Waterford, IrelandHQ checked Sep 18, 2026	1-10	12 contacts →
	Partial evidence “We are your Energy Saving Net-Zero Partner At Copper Coast Renewables, we offer world class energy savings to your business through innovative green technologies such as Solar PV…” Source: RevenueBase Database · checked Sep 18, 2026
25	Solar Generation	Partial evidence	Sligo, IrelandHQ checked Sep 18, 2026	11-50	12 contacts →
	Partial evidence “Our team has over 25 years experience in all aspects of renewable energy with a specific focus on solar photovoltaic installations for home and business.” Source: RevenueBase Database · checked Sep 18, 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: sustainable energy consultants. 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 sustainable energy consultants.
Partial evidence: Its own public description names part of sustainable energy consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sustainable energy consultants. 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 150 sustainable energy consultants based in Ireland

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Sustainable energy consultants based in Ireland at a glance

As of Sep 18, 2026

35.4%Verified-email coverage

14.1Average contacts per company

1-10Median size (employees)

18.7%Largest-city concentration · Dublin

Sep 18, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 150 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 sustainable energy consultants, 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 “sustainable energy consultants”. 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 sustainable energy consultants), 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 sustainable energy consultants, 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, 749 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 18, 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.

Sustainable energy consultants by metro

Sustainable energy consultants in Dublin28

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 sustainable energy consultants, 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 sustainable energy consultants are there based in Ireland?

RevenueBase identified 150 sustainable energy consultants 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?

SSE Airtricity, headquartered in Ireland, tops this list with the largest team on record.

Which city has the most sustainable energy consultants?

Dublin leads with 28 headquartered companies, followed by Cork (9) and Waterford (5).

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 749 verified decision-maker contacts tracked across these 150 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 18, 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.