Company lists · Data refreshed September 2026

Top 25 Energy and infrastructure law firms based in Ireland

Name: Energy and infrastructure law firms based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 71 companies tracked

RevenueBase identified 71 energy and infrastructure law firms headquartered in Ireland as of September 2026 and tracks 4,510 professional contacts across them, including 2,947 with verified work emails. Dublin is the largest hub.

This list covers energy and infrastructure law firms 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 28, 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 28, 2026 86% judged on-target in blind review

71Companies

4,510Contacts tracked

2,947Verified emails

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The 25 largest energy and infrastructure law firms based in Ireland

Ranked by team size

Top 25 of 71 energy and infrastructure law firms based in Ireland, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to energy and infrastructure law firms: 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	A&l Goodbody LLP	Partial evidence	Dublin 1, IrelandHQ checked Sep 28, 2026	501-1,000	998 contacts →
	Partial evidence “A&L Goodbody is one of Ireland's leading corporate law firms.” Source: RevenueBase Database · checked Sep 28, 2026
2	Arthur COX LLP	Partial evidence	Dublin, IrelandHQ checked Sep 28, 2026	501-1,000	913 contacts →
	Partial evidence “Arthur Cox LLP is one of Ireland’s leading law firms.” Source: RevenueBase Database · checked Sep 28, 2026
3	Mason Hayes & Curran LLP	Partial evidence	Dublin 4, IrelandHQ checked Sep 28, 2026	501-1,000	666 contacts →
	Partial evidence “Mason Hayes & Curran LLP is a leading Irish law firm based in Dublin with offices in San Francisco, New York and London, three of Ireland’s most important conduits for inward…” Source: RevenueBase Database · checked Sep 28, 2026
4	Philip LEE LLP	Partial evidence	Dublin, IrelandHQ checked Sep 28, 2026	51-200	191 contacts →
	Partial evidence “Philip Lee LLP is one of Ireland’s leading corporate and commercial law firms.” Source: RevenueBase Database · checked Sep 28, 2026
5	Hayes Solicitors LLP	Indirect evidence	Dublin, IrelandHQ checked Sep 28, 2026	51-200	165 contacts →
	Indirect evidence “Hayes is a leading independent Irish firm providing a comprehensive range of legal services to corporate, public, and private clients with a presence in Ireland.” Source: RevenueBase Database · checked Sep 28, 2026
6	Comyn Kelleher Tobin LLP	Partial evidence	Cork, IrelandHQ checked Sep 28, 2026	51-200	66 contacts →
	Partial evidence “Comyn Kelleher Tobin LLP (CKT) is a leading Irish law firm with offices in Cork and Dublin offering expert legal advice to commercial, public sector and private clients.” Source: RevenueBase Database · checked Sep 28, 2026
7	MHP Sellors	Partial evidence	Limerick, IrelandHQ checked Sep 28, 2026	11-50	52 contacts →
	Partial evidence “MHP Sellors LLP is the largest dual-county legal team in the Mid-West region formed by merger of award winning law firms MHP Solicitors & Sellors and has the expertise and…” Source: RevenueBase Database · checked Sep 28, 2026
8	Ivor Fitzpatrick And Company Solicitors	Indirect evidence	Dublin, IrelandHQ checked Sep 28, 2026	11-50	44 contacts →
	Indirect evidence “At Ivor Fitzpatrick & Company, our experienced, talented and committed professionals are passionate about providing excellent advice and encourage you to expect more.” Source: RevenueBase Database · checked Sep 28, 2026
9	O'flynn Exhams LLP	Partial evidence	Cork, IrelandHQ checked Sep 28, 2026	11-50	40 contacts →
	Partial evidence “OFX is a long established commercial law firm that provides a full range of legal services to both national and multinational clients as well as the State sector.” Source: RevenueBase Database · checked Sep 28, 2026
10	Cantillons Solicitors	Indirect evidence	Cork, IrelandHQ checked Sep 28, 2026	11-50	37 contacts →
	Indirect evidence “We are a dedicated team of skilled litigation professionals.” Source: RevenueBase Database · checked Sep 28, 2026
11	Hugh J Ward & CO Solicitors	Indirect evidence	Dublin, IrelandHQ checked Sep 28, 2026	11-50	37 contacts →
	Indirect evidence “Hugh J.” Source: RevenueBase Database · checked Sep 28, 2026
12	Eversheds Sutherland LLP Ireland	Partial evidence	Dublin, IrelandHQ checked Sep 28, 2026	201-500	34 contacts →
	Partial evidence “Eversheds Sutherland is a full service commercial law firm with a business-like approach.” Source: RevenueBase Database · checked Sep 28, 2026
13	Gartlan Furey LLP	Indirect evidence	Dublin 2, IrelandHQ checked Sep 28, 2026	11-50	33 contacts →
	Indirect evidence “Gartlan Furey deliver expert and efficient legal services to a broad range of valued clients.” Source: RevenueBase Database · checked Sep 28, 2026
14	Daniel Spring & CO	Indirect evidence	Dublin 2, IrelandHQ checked Sep 28, 2026	11-50	31 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
15	Rubicon Capital Advisors	Strong evidence	Dublin, IrelandHQ checked Sep 28, 2026	11-50	31 contacts →
	Strong evidence “Rubicon is one of the world’s leading investment banking firms focused solely on the infrastructure, energy & utilities sectors.” Source: RevenueBase Database · checked Sep 28, 2026
16	O'gorman Solicitors	Indirect evidence	Limerick, IrelandHQ checked Sep 28, 2026	11-50	28 contacts →
	Indirect evidence “The firm was formed by Daniel O’Gorman in 1991 and we are located in a magnificently restored Georgian building in the heart of Limerick City.” Source: RevenueBase Database · checked Sep 28, 2026
17	POE Kiely Hogan Lanigan Solicitors	Partial evidence	Kilkenny, IrelandHQ checked Sep 28, 2026	11-50	24 contacts →
	Partial evidence “We are Poe Kiely Hogan Lanigan, a full-service law firm based in the heart of Kilkenny.” Source: RevenueBase Database · checked Sep 28, 2026
18	Sweeney Mcgann LLP Solicitors	Partial evidence	Limerick, IrelandHQ checked Sep 28, 2026	11-50	24 contacts →
	Partial evidence “Sweeney McGann LLP is one of the mid-west regions premier law practices providing legal services in all aspects of private client, business and corporate law.” Source: RevenueBase Database · checked Sep 28, 2026
19	Macsweeney & Company	Partial evidence	Galway, IrelandHQ checked Sep 28, 2026	11-50	15 contacts →
	Partial evidence “MacSweeney & Company, a full service law firm in Galway, was established in 2003 to meet the growing need for a professional locally based, business-like legal service for both…” Source: RevenueBase Database · checked Sep 28, 2026
20	O'connor LLP	Partial evidence	Dublin, IrelandHQ checked Sep 28, 2026	11-50	14 contacts →
	Partial evidence “O'Connor Solicitors is a commercial legal practice specialising in Commercial and regulatory law, commercial litigation, employment law, and healthcare law.” Source: RevenueBase Database · checked Sep 28, 2026
21	Taylor Wessing Ireland	Indirect evidence	Dublin, IrelandHQ checked Sep 28, 2026	1,001-5,000	13 contacts →
	Indirect evidence “As of 1 June 2026, Taylor Wessing's UK-led businesses combined with Winston & Strawn to become Winston Taylor.” Source: RevenueBase Database · checked Sep 28, 2026
22	Mckeever Rowan Solicitors	Indirect evidence	Dublin 1, IrelandHQ checked Sep 28, 2026	11-50	12 contacts →
	Indirect evidence “McKeever Rowan Solicitors, originally founded as McKeevers in 1898, is based in the heart of Dublin’s Financial District, the IFSC, Dublin Ireland.” Source: RevenueBase Database · checked Sep 28, 2026
23	GMB LAW LLP	Strong evidence	Killybegs, IrelandHQ checked Sep 28, 2026	11-50	11 contacts →
	Strong evidence “GMB Law is a results driven client focused firm who combine experience and energetic youth to provide legal solutions across the full breadth of both the business and private…” Source: RevenueBase Database · checked Sep 28, 2026
24	J.D. Scanlon & Company LLP	Indirect evidence	Tullamore, IrelandHQ checked Sep 28, 2026	11-50	10 contacts →
	Indirect evidence “J.D.” Source: RevenueBase Database · checked Sep 28, 2026
25	OBL Solicitors	Indirect evidence	IrelandHQ checked Sep 28, 2026	51-200	10 contacts →
	Indirect evidence “OBL was founded by highly-regarded lawyers Michael Lynam and Jack O’Brien in and began as O’Brien Lynam Solicitors.” Source: RevenueBase Database · checked Sep 28, 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 and infrastructure law firms. 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 and infrastructure law firms.
Partial evidence: Its own public description names part of energy and infrastructure law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy and infrastructure law firms. 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 71 energy and infrastructure law firms based in Ireland

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Energy and infrastructure law firms based in Ireland at a glance

As of Sep 28, 2026

65.3%Verified-email coverage

63.5Average contacts per company

11-50Median size (employees)

26.8%Largest-city concentration · Dublin

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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 71 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 and infrastructure law firms, 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 and infrastructure law firms”. 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 and infrastructure law firms), 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 and infrastructure law firms, 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, 2,947 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 28, 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 and infrastructure law firms, 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 and infrastructure law firms are there based in Ireland?

RevenueBase identified 71 energy and infrastructure law firms 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?

A&l Goodbody LLP, headquartered in Dublin, tops this list with the largest team on record.

Which city has the most energy and infrastructure law firms?

Dublin leads with 19 headquartered companies, followed by Cork (10) and Galway (3).

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 2,947 verified decision-maker contacts tracked across these 71 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 28, 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.