Company lists · Data refreshed September 2026

Top 25 Energy law firms worldwide

Name: Energy law firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 2, 2026 8,678 companies tracked

RevenueBase identified 8,678 energy law firms worldwide as of September 2026 and tracks 197,812 professional contacts across them, including 100,190 with verified work emails and 66,854 with mobile numbers. The United States is the largest market and Sao Paulo the largest hub.

This list covers energy law firms worldwide, 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 2, 2026. Country and city lists for energy law firms follow the table.

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 RevenueBase Smart Search rating on every row Refreshed Sep 2, 2026 86% judged on-target in blind review

8,678Companies

197,812Contacts tracked

100,190Verified emails

66,854Mobile numbers

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The 25 largest energy law firms worldwide

Ranked by team size

Top 25 of 8,678 energy law firms worldwide, ranked by team size, largest first. Data refreshed Sep 2, 2026. RevenueBase Smart Search rates how each company's information relates to energy 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&o Shearman	Partial evidence	Austin, TX, US	5,001-10,000	6,593 contacts →
	Partial evidence “A&O Shearman transforms the way law is practiced, to deliver unparalleled results for our clients' most complex matters – everywhere in the world.” Source: RevenueBase Database · checked Sep 2, 2026
2	K&l Gates	Indirect evidence	Miami, FL, US	1,001-5,000	4,851 contacts →
	Indirect evidence “At K&L Gates, we foster an inclusive and collaborative environment across our fully integrated global platform that enables us to diligently combine the knowledge and expertise of…” Source: RevenueBase Database · checked Sep 2, 2026
3	Foley & Lardner LLP	Partial evidence	Boston, MA, US	1,001-5,000	2,894 contacts →
	Partial evidence “Foley & Lardner LLP stands at the nexus of the Energy & Infrastructure, Health Care & Life Sciences, Innovative Technology, and Manufacturing Sectors.” Source: RevenueBase Database · checked Sep 2, 2026
4	Arnold & Porter	Indirect evidence	Washington, DC, US	1,001-5,000	2,324 contacts →
	Indirect evidence “Arnold & Porter combines sophisticated regulatory, litigation, and transactional capabilities to resolve clients’ most complex issues.” Source: RevenueBase Database · checked Sep 2, 2026
5	Dechert LLP	Partial evidence	Philadelphia, PA, US	1,001-5,000	2,056 contacts →
	Partial evidence “Dechert is the law firm that helps business leaders lead.” Source: RevenueBase Database · checked Sep 2, 2026
6	Nelson Mullins Riley & Scarborough	Partial evidence	Columbia, SC, US	1,001-5,000	2,036 contacts →
	Partial evidence “Established in 1897, Nelson Mullins is an Am Law 100 firm of more than attorneys, policy advisors and professionals with 33 offices in 17 states and Washington, D.C.” Source: RevenueBase Database · checked Sep 2, 2026
7	Fieldfisher	Partial evidence	Milan, IT	1,001-5,000	1,987 contacts →
	Partial evidence “Fieldfisher is an enterprising European law firm built around people.” Source: RevenueBase Database · checked Sep 2, 2026
8	Taft Stettinius & Hollister LLP	Indirect evidence	Indianapolis, IN, US	1,001-5,000	1,963 contacts →
	Indirect evidence “At Taft, we work as one team, driven and committed to helping you succeed.” Source: RevenueBase Database · checked Sep 2, 2026
9	Trilegal	Partial evidence	Mumbai, IndiaHQ checked Sep 2, 2026	1,001-5,000	1,926 contacts →
	Partial evidence “Trilegal is a leading full-service law firm in India with over 25 years of experience, known for its depth of expertise and client-focused approach.” Source: RevenueBase Database · checked Sep 2, 2026
10	Troutman Pepper Locke LLP	Indirect evidence	US	1,001-5,000	1,867 contacts →
	Indirect evidence “Troutman Pepper Locke LLP helps clients solve complex legal challenges and achieve their business goals in an ever-changing global economy.” Source: RevenueBase Database · checked Sep 2, 2026
11	Clayton UTZ	Partial evidence	Canberra, AU	1,001-5,000	1,805 contacts →
	Partial evidence “We are one of Australia's oldest and largest law firms, with offices in six cities, nearly 200 partners, and a full range of legal services for large private sector and government…” Source: RevenueBase Database · checked Sep 2, 2026
12	Venable LLP	Partial evidence	Washington, DC, US	1,001-5,000	1,791 contacts →
	Partial evidence “Committed to Your Success – As a law firm of more than 900 professionals, Venable delivers legal services globally in every area of regulatory compliance, government affairs…” Source: RevenueBase Database · checked Sep 2, 2026
13	Ballard Spahr LLP	Partial evidence	Washington D.C., DC, US	1,001-5,000	1,720 contacts →
	Partial evidence “Ballard Spahr LLP, an Am Law 100 law firm with more than 750 lawyers in 19 U.S.” Source: RevenueBase Database · checked Sep 2, 2026
14	Crowell & Moring	Partial evidence	Chicago, IL, US	1,001-5,000	1,626 contacts →
	Partial evidence “Crowell & Moring is an international law firm with operations in the United States, Europe, MENA, and Asia.” Source: RevenueBase Database · checked Sep 2, 2026
15	Tozzinifreire Advogados	Partial evidence	Campinas, BR	1,001-5,000	1,596 contacts →
	Partial evidence “TozziniFreire is one of the leading legal services organizations in Latin America, operating in all areas of Business Law and with a significant track record in serving national…” Source: RevenueBase Database · checked Sep 2, 2026
16	Haynes And Boone, LLP	Strong evidence	The Woodlands, TX, US	1,001-5,000	1,563 contacts →
	Strong evidence “Haynes Boone is among the fastest-growing firms in the Am Law 100, providing full-service counsel across sectors, including corporate, energy, financial services, real estate…” Source: RevenueBase Database · checked Sep 2, 2026
17	Corrs Chambers Westgarth	Partial evidence	Perth, AU	1,001-5,000	1,542 contacts →
	Partial evidence “Corrs Chambers Westgarth is Australia’s leading independent law firm.” Source: RevenueBase Database · checked Sep 2, 2026
18	Baker Botts	Partial evidence	Austin, TX, US	1,001-5,000	1,510 contacts →
	Partial evidence “Baker Botts is an international law firm whose lawyers practice throughout a network of offices around the globe.” Source: RevenueBase Database · checked Sep 2, 2026
19	Watson Farley & Williams	Strong evidence	Madrid, ES	1,001-5,000	1,335 contacts →
	Strong evidence “Watson Farley & Williams is a leading international law firm advising clients operating in the energy, infrastructure and transport sectors.” Source: RevenueBase Database · checked Sep 2, 2026
20	Quarles & Brady LLP	Indirect evidence	Milwaukee, WI, US	1,001-5,000	1,333 contacts →
	Indirect evidence “For over 125 years, Quarles & Brady LLP has provided quality legal services to a wide range of industries on a national stage.” Source: RevenueBase Database · checked Sep 2, 2026
21	MINTZ	Strong evidence	New York, US	1,001-5,000	1,318 contacts →
	Strong evidence “Mintz is a full-service law firm serving clients in the life sciences, energy, private equity, and technology industries.” Source: RevenueBase Database · checked Sep 2, 2026
22	Hunton Andrews Kurth LLP	Indirect evidence	Brussels, BE	1,001-5,000	1,286 contacts →
	Indirect evidence “For 125 years, Hunton has served clients across the globe with a collaborative and purposeful approach.” Source: RevenueBase Database · checked Sep 2, 2026
23	Hill Dickinson LLP	Partial evidence	Leeds, GB	1,001-5,000	1,246 contacts →
	Partial evidence “An unpredictable world calls for a progressive-thinking law firm that’s aligned to your ambitions.” Source: RevenueBase Database · checked Sep 2, 2026
24	Snell & Wilmer	Partial evidence	Palo Alto, CA, US	501-1,000	1,233 contacts →
	Partial evidence “Founded in 1938, Snell & Wilmer is a full-service business law firm with more than 500 lawyers practicing in 17 locations throughout the United States and in Mexico.” Source: RevenueBase Database · checked Sep 2, 2026
25	Buchanan Ingersoll & Rooney PC	Partial evidence	Pittsburgh, PA, US	501-1,000	1,204 contacts →
	Partial evidence “Buchanan Ingersoll & Rooney is a national law firm with a proven reputation for providing progressive, industry-leading legal, business, regulatory and government relations advice…” Source: RevenueBase Database · checked Sep 2, 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 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 law firms.
Partial evidence: Its own public description names part of energy 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 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 8,678 energy law firms worldwide

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Energy law firms worldwide at a glance

As of Sep 2, 2026

50.6%Verified-email coverage

33.8%Mobile-number coverage

22.8Average contacts per company

1-10Median size (employees)

3.4%Largest-city concentration · Sao Paulo

Sep 2, 2026Page data refreshed

Companies by employee count

1-10

5,067

11-50

2,733

51-200

596

201-500

131

501-1,000

1,001-5,000

5,001-10,000

10001+

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 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.
Coverage: 39 countries, largest first: the United States, Brazil, France, Germany, Italy, Canada, Spain, Mexico, India, Türkiye and 29 more. Country and city lists for energy law firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “energy 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 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 law firms, and records with no verified work email.
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, 100,190 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 between September 2, 2026 and September 14, 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.

Energy law firms by location

83 lists · largest first

Every Energy law firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 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 law firms are there worldwide?

RevenueBase identified 8,678 energy law firms worldwide 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&o Shearman, headquartered in Austin, tops this list with the largest team on record.

Which country has the most energy law firms?

The United States leads with 3,243 companies, followed by Brazil (1,283) and France (406). Every energy law firms list by country and city is linked on this page.

Which city has the most energy law firms?

Sao Paulo leads with 293 headquartered companies, followed by Paris (199) and Houston (154).

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 100,190 verified decision-maker contacts tracked across these 8,678 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled from the company graph between September 2, 2026 and September 14, 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.