Company lists · Data refreshed September 2026

Top 25 Energy compliance law firms worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 3,631 companies tracked

RevenueBase identified 3,631 energy compliance law firms worldwide as of September 2026 and tracks 44,188 professional contacts across them, including 20,868 with verified work emails. The United States is the largest market and Paris the largest hub.

This list covers energy compliance 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 28, 2026. Country and city lists for energy compliance 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

3,631Companies

44,188Contacts tracked

20,868Verified emails

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The 25 largest energy compliance law firms worldwide

Ranked by team size

Top 25 of 3,631 energy compliance law firms worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to energy compliance 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	Foley & Lardner LLP	Partial evidence	Milwaukee, WI, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,884 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 28, 2026
2	Venable LLP	Strong evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,790 contacts →
	Strong 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 28, 2026
3	Ballard Spahr LLP	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,682 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 28, 2026
4	Buchanan Ingersoll & Rooney PC	Partial evidence	Pittsburgh, PA, United StatesHQ checked Sep 28, 2026	501-1,000	1,197 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 28, 2026
5	Brownstein Hyatt Farber Schreck	Partial evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	501-1,000	902 contacts →
	Partial evidence “For decades, we’ve positioned ourselves at the intersection of law, business and policy to bring a multidisciplinary strategy to every issue.” Source: RevenueBase Database · checked Sep 28, 2026
6	Stoel Rives LLP	Indirect evidence	Portland, OR, United StatesHQ checked Sep 28, 2026	501-1,000	864 contacts →
	Indirect evidence “Stoel Rives is a leading U.S.” Source: RevenueBase Database · checked Sep 28, 2026
7	Steptoe & Johnson Pllc	Strong evidence	Bridgeport, WV, United StatesHQ checked Sep 28, 2026	501-1,000	757 contacts →
	Strong evidence “Steptoe & Johnson PLLC is a law firm nationally recognized for its strengths in energy law with more than a century of know-how in the areas of business, employment, and…” Source: RevenueBase Database · checked Sep 28, 2026
8	Parker POE Adams & Bernstein LLP	Indirect evidence	Charlotte, NC, United StatesHQ checked Sep 28, 2026	501-1,000	584 contacts →
	Indirect evidence “Businesses and local governments turn to Parker Poe to structure transactions, navigate regulations, and resolve disputes.” Source: RevenueBase Database · checked Sep 28, 2026
9	Bond, Schoeneck & King Pllc	Partial evidence	Syracuse, NY, United StatesHQ checked Sep 28, 2026	201-500	581 contacts →
	Partial evidence “Bond is a full-service law firm counseling individuals, companies, not-for-profits and public sector entities in a wide spectrum of practice areas.” Source: RevenueBase Database · checked Sep 28, 2026
10	Wiley Rein LLP	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	501-1,000	576 contacts →
	Indirect evidence “Founded in 1983, Wiley is a dominant presence in the nation’s capital.” Source: RevenueBase Database · checked Sep 28, 2026
11	Michelmores	Partial evidence	United KingdomHQ checked Sep 28, 2026	201-500	531 contacts →
	Partial evidence “Michelmores is the destination law firm for the ambitious, the imaginative and the distinctive.” Source: RevenueBase Database · checked Sep 28, 2026
12	Marcelo Tostes Advogados	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 28, 2026	201-500	518 contacts →
	Indirect evidence “Fundado em o Marcelo Tostes Advogados firmou-se como um escritório de advocacia empresarial de excelência.” Source: RevenueBase Database · checked Sep 28, 2026
13	BPR	Partial evidence	United StatesHQ checked Sep 28, 2026	n/a	475 contacts →
	Partial evidence “BPR is a boutique communications firm speicalizing in the energy industry.” Source: RevenueBase Database · checked Sep 28, 2026
14	Balch & Bingham LLP	Partial evidence	Birmingham, AL, United StatesHQ checked Sep 28, 2026	201-500	472 contacts →
	Partial evidence “Balch & Bingham LLP is a full-service corporate law firm recognized nationally for its genuine dedication to its clients, forward-thinking approach, and ability to anticipate what…” Source: RevenueBase Database · checked Sep 28, 2026
15	Kean Miller	Indirect evidence	Baton Rouge, LA, United StatesHQ checked Sep 28, 2026	201-500	452 contacts →
	Indirect evidence “Just as oil and gas must be refined to unlock their true potential, we at Kean Miller continuously optimize our legal approach to help transform business complexities into new…” Source: RevenueBase Database · checked Sep 28, 2026
16	TRIO	Partial evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	201-500	383 contacts →
	Partial evidence “We are Trio – built from Edison Energy, Alfa Energy, and Altenex Energy.” Source: RevenueBase Database · checked Sep 28, 2026
17	Jackson Kelly Pllc	Partial evidence	Charleston, WV, United StatesHQ checked Sep 28, 2026	201-500	330 contacts →
	Partial evidence “Jackson Kelly PLLC is a national law firm representing leading global corporations, national companies, entrepreneurs and individuals in areas of law such as environmental…” Source: RevenueBase Database · checked Sep 28, 2026
18	Beveridge & Diamond PC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	201-500	328 contacts →
	Indirect evidence “Beveridge & Diamond’s 170+ lawyers in 7 U.S.” Source: RevenueBase Database · checked Sep 28, 2026
19	Thompson & Knight LLP	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 28, 2026	501-1,000	327 contacts →
	Indirect evidence “Thompson & Knight is now known as Holland & Knight.” Source: RevenueBase Database · checked Sep 28, 2026
20	Pierce Atwood LLP	Partial evidence	Portland, ME, United StatesHQ checked Sep 28, 2026	201-500	320 contacts →
	Partial evidence “Pierce Atwood LLP, a highly-regarded, full-service law firm based in New England, has 150 attorneys who serve regional, national, and international clients from offices in…” Source: RevenueBase Database · checked Sep 28, 2026
21	Beccar Varela	Partial evidence	San Nicolás, ArgentinaHQ checked Sep 28, 2026	201-500	299 contacts →
	Partial evidence “We are a leading law firm in Argentina, with over 125 years of practice both locally and abroad.” Source: RevenueBase Database · checked Sep 28, 2026
22	Davis Graham & Stubbs LLP	Strong evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	201-500	283 contacts →
	Strong evidence “Davis Graham & Stubbs LLP enjoys a strong national reputation for its corporate finance, natural resources, and energy law practices, with a particular focus on securities and M&A…” Source: RevenueBase Database · checked Sep 28, 2026
23	Burnet, Duckworth & Palmer LLP	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 28, 2026	201-500	272 contacts →
	Indirect evidence “The world is changing, and it’s happening faster than ever.” Source: RevenueBase Database · checked Sep 28, 2026
24	Merjent	Partial evidence	Minneapolis, MN, United StatesHQ checked Sep 28, 2026	201-500	264 contacts →
	Partial evidence “Merjent is an environmental, restoration, and engineering consulting firm with a long history serving the energy industry.” Source: RevenueBase Database · checked Sep 28, 2026
25	Liskow	Indirect evidence	New Orleans, LA, United StatesHQ checked Sep 28, 2026	201-500	259 contacts →
	Indirect evidence “Liskow was founded in 1935 and includes nearly 150 lawyers across our five offices, strategically located in New Orleans, Lafayette, and Baton Rouge, Louisiana, Houston, Texas…” 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 compliance 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 compliance law firms.
Partial evidence: Its own public description names part of energy compliance 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 compliance 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 3,631 energy compliance law firms worldwide

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Energy compliance law firms worldwide at a glance

As of Sep 28, 2026

47.2%Verified-email coverage

12.2Average contacts per company

1-10Median size (employees)

2.3%Largest-city concentration · Paris

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

2,478

11-50

943

51-200

145

201-500

501-1,000

1,001-5,000

Email recency is reported on each country list linked below.

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 compliance 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: Every country. Country and city lists for energy compliance law firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “energy compliance 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 compliance 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 compliance 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, 20,868 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.

Energy compliance law firms by location

25 lists · largest first

Every Energy compliance 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 compliance 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 compliance law firms are there worldwide?

RevenueBase identified 3,631 energy compliance 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?

Foley & Lardner LLP, headquartered in Milwaukee, tops this list with the largest team on record.

Which country has the most energy compliance law firms?

The United States leads with 883 companies, followed by Brazil (368) and Germany (189). Every energy compliance law firms list by country and city is linked on this page.

Which city has the most energy compliance law firms?

Paris leads with 82 headquartered companies, followed by Sao Paulo (62) and Houston (50).

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 20,868 verified decision-maker contacts tracked across these 3,631 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.