Company lists · Data refreshed September 2026

Top 25 Energy and infrastructure law firms based in the United States

Name: Energy and infrastructure 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 28, 2026 3,450 companies tracked

RevenueBase identified 3,450 company matches for energy and infrastructure law firms associated with the United States as of September 2026 and tracks 294,757 professional contacts across them, including 151,799 with verified work emails. New York is the largest hub.

This list covers company matches for energy and infrastructure law firms associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 SmartSearch · Exact Recorded Sep 28, 2026 How this list was built

3,450Companies

294,757Contacts tracked

151,799Verified emails

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The 25 largest energy and infrastructure law firms based in the United States

Ranked by team size

Top 25 of 3,450 company matches for energy and infrastructure law firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	AECOM	Exact match	Dallas, TX, United StatesHQ recorded Sep 28, 2026	10001+	63,914 contacts →
	Exact match “AECOM is the global infrastructure leader, committed to delivering a better world.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2	White & Case LLP	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	1,001-5,000	7,485 contacts →
	Exact match “White & Case is a global law firm with longstanding offices in the markets that matter today.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3	Sidley Austin LLP	Exact match	Chicago, IL, United StatesHQ recorded Sep 28, 2026	1,001-5,000	5,169 contacts →
	Exact match “Sidley is an elite global law firm.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4	K&l Gates	Exact match	Pittsburgh, PA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	4,861 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5	Morgan, Lewis & Bockius LLP	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	4,832 contacts →
	Exact match “From our offices in strategic hubs of commerce, law, and government across North America, Asia, Europe, and the Middle East, we work with clients ranging from established, global…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6	Skadden, Arps, Slate, Meagher & Flom LLP And Affiliates	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	1,001-5,000	4,540 contacts →
	Exact match “Skadden, Arps, Slate, Meagher & Flom LLP and Affiliates delivers the highest quality advice and novel solutions to legal challenges, enabling clients to achieve their business…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7	Mayer Brown	Exact match	Chicago, IL, United StatesHQ recorded Sep 28, 2026	1,001-5,000	4,177 contacts →
	Exact match “Mayer Brown is a leading international law firm, positioned to represent the world’s major corporations, funds and financial institutions in their most important and complex…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8	Sargent & Lundy	Exact match	Chicago, WY, United StatesHQ recorded Sep 28, 2026	1,001-5,000	4,156 contacts →
	Exact match “Sargent & Lundy is one of the world’s longest-standing full-service architect engineering firms.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9	Gibson Dunn	Exact match	Los Angeles, CA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	3,735 contacts →
	Exact match “Gibson Dunn is a leading global law firm, advising clients on significant transactions and disputes.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10	Squire Patton Boggs	Exact match	Cleveland, OH, United StatesHQ recorded Sep 28, 2026	1,001-5,000	3,343 contacts →
	Exact match “Squire Patton Boggs is a full service global law firm providing insight at the point where law, business and government meet, giving you a voice, supporting your ambitions and…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11	Cooley LLP	Exact match	Palo Alto, CA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	3,341 contacts →
	Exact match “Clients partner with Cooley on transformative deals, complex IP and regulatory matters, and high-stakes litigation.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12	Orrick, Herrington & Sutcliffe LLP	Exact match	San Francisco, CA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	3,066 contacts →
	Exact match “Orrick is a global law firm focused on serving the Technology & Innovation, Energy & Infrastructure, Finance and Life Sciences & HealthTech sectors.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13	Paul Hastings	Exact match	Los Angeles, CA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	3,045 contacts →
	Exact match “With widely recognized elite teams in finance, mergers & acquisitions, private equity, restructuring and special situations, litigation, employment and real estate, Paul Hastings…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14	Foley & Lardner LLP	Exact match	Milwaukee, WI, United StatesHQ recorded Sep 28, 2026	1,001-5,000	2,884 contacts →
	Exact match “Foley & Lardner LLP stands at the nexus of the Energy & Infrastructure, Health Care & Life Sciences, Innovative Technology, and Manufacturing Sectors.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15	Perkins Coie	Exact match	Seattle, WA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	2,746 contacts →
	Exact match “Perkins Coie has combined with Ashurst to form Ashurst Perkins Coie.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	Morrison Foerster	Exact match	San Francisco, CA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	2,667 contacts →
	Exact match “Morrison Foerster transforms complexity into advantage.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17	Paul, Weiss, Rifkind, Wharton & Garrison LLP	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	1,001-5,000	2,577 contacts →
	Exact match “Paul, Weiss, Rifkind, Wharton & Garrison LLP is a global law firm of more than 1,500 lawyers focused on helping clients navigate their most complex legal and business challenges.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18	Akin Gump Strauss Hauer & Feld LLP	Exact match	Washington, United StatesHQ recorded Sep 28, 2026	1,001-5,000	2,454 contacts →
	Exact match “Akin is a global law firm with more than 1,100 lawyers and advisors who pride themselves on dedication to their clients and their communities.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19	Arnold & Porter	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	1,001-5,000	2,333 contacts →
	Exact match “Arnold & Porter combines sophisticated regulatory, litigation, and transactional capabilities to resolve clients’ most complex issues.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20	Willkie Farr & Gallagher LLP	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	1,001-5,000	2,190 contacts →
	Exact match “Willkie Farr & Gallagher LLP provides leading-edge legal solutions on complex, business critical issues spanning markets and industries.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21	Seyfarth Shaw LLP	Exact match	Chicago, IL, United StatesHQ recorded Sep 28, 2026	1,001-5,000	2,167 contacts →
	Exact match “High stakes.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22	Proskauer Rose LLP	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	1,001-5,000	2,096 contacts →
	Exact match “We are 800+ lawyers serving clients from offices located in the leading financial and business centers in the Americas, Europe and Asia.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23	Dechert LLP	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	2,041 contacts →
	Exact match “Dechert is the law firm that helps business leaders lead.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24	Nelson Mullins Riley & Scarborough	Exact match	Columbia, SC, United StatesHQ recorded Sep 28, 2026	1,001-5,000	2,012 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25	IMEG	Exact match	Rock Island, IL, United StatesHQ recorded Sep 28, 2026	1,001-5,000	1,985 contacts →
	Exact match “Leaders in Engineering and Innovation.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “energy and infrastructure law firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 3,450 energy and infrastructure law firms based in the United States

See the full list, filter by size, metro and specialty, and access 151,799 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Energy and infrastructure law firms based in the United States at a glance

As of Sep 28, 2026

51.5%Verified-email coverage

85.4Average contacts per company

1-10Median size (employees)

5.7%Largest-city concentration · New York

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

1,781

11-50

1,052

51-200

388

201-500

112

501-1,000

1,001-5,000

5,001-10,000

10001+

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 3,450 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United States whose business descriptions match “energy and infrastructure law firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 151,799 professional contacts with verified work emails across the full matched dataset. 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.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Energy and infrastructure law firms by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “energy and infrastructure law firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many energy and infrastructure law firms are there based in the United States?

RevenueBase identified 3,450 company matches for energy and infrastructure law firms associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

AECOM tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most energy and infrastructure law firms?

New York leads with 198 company records, followed by Houston (193) and Washington (125).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 151,799 professional contacts with verified work emails tracked across these 3,450 companies; direct dials are available where recorded.

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 SmartSearch, 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.