Company lists · Data refreshed September 2026

Top 25 Energy sector law firms based in the United States

Name: Energy sector law firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 1,842 companies tracked

RevenueBase identified 1,842 energy sector law firms headquartered in the United States as of September 2026 and tracks 90,866 professional contacts across them, including 54,357 with verified work emails. Houston is the largest hub.

This list covers energy sector law firms headquartered in the United States, 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

1,842Companies

90,866Contacts tracked

54,357Verified emails

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The 25 largest energy sector law firms based in the United States

Ranked by team size

Top 25 of 1,842 energy sector law firms based in the United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to energy sector 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	Strong evidence	Milwaukee, WI, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,884 contacts →
	Strong 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 21, 2026
2	Perkins Coie	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,746 contacts →
	Indirect evidence “Perkins Coie has combined with Ashurst to form Ashurst Perkins Coie.” Source: RevenueBase Database · checked Sep 21, 2026
3	Arnold & Porter	Indirect evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,333 contacts →
	Indirect evidence “Arnold & Porter combines sophisticated regulatory, litigation, and transactional capabilities to resolve clients’ most complex issues.” Source: RevenueBase Database · checked Sep 21, 2026
4	Dechert LLP	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,041 contacts →
	Partial evidence “Dechert is the law firm that helps business leaders lead.” Source: RevenueBase Database · checked Sep 21, 2026
5	Troutman Pepper Locke LLP	Indirect evidence	United StatesHQ checked Sep 21, 2026	1,001-5,000	1,895 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 21, 2026
6	Faegre Drinker	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,848 contacts →
	Indirect evidence “Faegre Drinker is a firm designed for clients.” Source: RevenueBase Database · checked Sep 21, 2026
7	Venable LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,790 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 21, 2026
8	Vinson & Elkins	Partial evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,693 contacts →
	Partial evidence “Vinson & Elkins is a law firm of global distinction, working with leading companies on wide-ranging matters in key industries across the economy.” Source: RevenueBase Database · checked Sep 21, 2026
9	Ballard Spahr LLP	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 21, 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 21, 2026
10	Crowell & Moring	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,602 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 21, 2026
11	Haynes And Boone, LLP	Strong evidence	Dallas, TX, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,558 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 21, 2026
12	Baker Botts	Partial evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,477 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 21, 2026
13	MINTZ	Strong evidence	Boston, MA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,326 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 21, 2026
14	Hunton Andrews Kurth LLP	Indirect evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,297 contacts →
	Indirect evidence “For 125 years, Hunton has served clients across the globe with a collaborative and purposeful approach.” Source: RevenueBase Database · checked Sep 21, 2026
15	Buchanan Ingersoll & Rooney PC	Partial evidence	Pittsburgh, PA, United StatesHQ checked Sep 21, 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 21, 2026
16	Hinshaw & Culbertson LLP	Partial evidence	Chicago, IL, United StatesHQ checked Sep 21, 2026	501-1,000	1,188 contacts →
	Partial evidence “Hinshaw & Culbertson LLP is a U.S-based law firm with offices nationwide.” Source: RevenueBase Database · checked Sep 21, 2026
17	Thompson Coburn LLP	Partial evidence	Saint Louis, MO, United StatesHQ checked Sep 21, 2026	501-1,000	938 contacts →
	Partial evidence “Thompson Coburn is a full-service, values-driven law firm with offices strategically located in Birmingham, Chicago, Dallas, Los Angeles, New York, Southern Illinois, St.” Source: RevenueBase Database · checked Sep 21, 2026
18	Brownstein Hyatt Farber Schreck	Partial evidence	Denver, CO, United StatesHQ checked Sep 21, 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 21, 2026
19	Stoel Rives LLP	Indirect evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	501-1,000	864 contacts →
	Indirect evidence “Stoel Rives is a leading U.S.” Source: RevenueBase Database · checked Sep 21, 2026
20	Benesch LAW	Partial evidence	Cleveland, OH, United StatesHQ checked Sep 21, 2026	501-1,000	848 contacts →
	Partial evidence “Benesch is an Am Law 200 business law firm and limited liability partnership with offices in Chicago, Cleveland, Columbus, New York, San Francisco and Wilmington.” Source: RevenueBase Database · checked Sep 21, 2026
21	Carlton Fields	Indirect evidence	Tampa, FL, United StatesHQ checked Sep 21, 2026	501-1,000	790 contacts →
	Indirect evidence “We view the world from our clients’ perspectives, helping them to lead and innovate across industries and around the globe.” Source: RevenueBase Database · checked Sep 21, 2026
22	Winstead PC	Partial evidence	Austin, TX, United StatesHQ checked Sep 21, 2026	501-1,000	788 contacts →
	Partial evidence “Winstead is a leading Texas-based law firm with national practices serving clients across the country.” Source: RevenueBase Database · checked Sep 21, 2026
23	Adams & Reese	Indirect evidence	U.S., United StatesHQ checked Sep 21, 2026	501-1,000	758 contacts →
	Indirect evidence “At Adams & Reese, we take things personally.” Source: RevenueBase Database · checked Sep 21, 2026
24	Steptoe & Johnson Pllc	Strong evidence	Bridgeport, WV, United StatesHQ checked Sep 21, 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 21, 2026
25	Kelley Drye & Warren LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 21, 2026	501-1,000	690 contacts →
	Partial evidence “Kelley Drye is an AmLaw 200 law firm of more than 350 lawyers and other professionals practicing in New York, NY; Washington, D.C; Chicago, IL; Houston, TX, Los Angeles, CA; San…” 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 sector 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 sector law firms.
Partial evidence: Its own public description names part of energy sector 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 sector 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 1,842 energy sector law firms based in the United States

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Energy sector law firms based in the United States at a glance

As of Sep 21, 2026

59.8%Verified-email coverage

49.3Average contacts per company

1-10Median size (employees)

7.5%Largest-city concentration · Houston

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

965

11-50

564

51-200

213

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,842 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 sector 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 the United States whose own description of what they do matches “energy sector 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 sector 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 sector law firms, and records with no verified work email. Companies headquartered outside United States 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, 54,357 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.

Energy sector law firms by metro

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 sector 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 sector law firms are there based in the United States?

RevenueBase identified 1,842 energy sector law firms headquartered in the United States 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 city has the most energy sector law firms?

Houston leads with 138 headquartered companies, followed by New York (66) and Washington (66).

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 54,357 verified decision-maker contacts tracked across these 1,842 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.

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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.