Company lists · Data refreshed September 2026

Top 25 Energy tax law firms based in the United States

RevenueBase identified 665 company matches for energy tax law firms associated with the United States as of September 2026 and tracks 14,414 professional contacts across them, including 8,442 with verified work emails. Houston is the largest hub.

This list covers company matches for energy tax 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
665Companies
14,414Contacts tracked
8,442Verified emails
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The 25 largest energy tax law firms based in the United States

Ranked by team size
Top 25 of 665 company matches for energy tax 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchDallas, TX, United StatesHQ recorded Sep 28, 20261,001-5,0001,558 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2Exact matchPittsburgh, PA, United StatesHQ recorded Sep 28, 2026501-1,0001,197 contacts →

Exact match

“Buchanan Ingersoll & Rooney is a national law firm with a proven reputation for providing progressive, industry-leading legal, business, regulatory and government relations advice…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3Exact matchPortland, OR, United StatesHQ recorded Sep 28, 2026501-1,000864 contacts →

Exact match

“Stoel Rives is a leading U.S.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4Exact matchBridgeport, WV, United StatesHQ recorded Sep 28, 2026501-1,000757 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5Exact matchSyracuse, NY, United StatesHQ recorded Sep 28, 2026201-500581 contacts →

Exact match

“Bond is a full-service law firm counseling individuals, companies, not-for-profits and public sector entities in a wide spectrum of practice areas.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6Exact matchBirmingham, AL, United StatesHQ recorded Sep 28, 2026201-500472 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7Exact matchBaton Rouge, LA, United StatesHQ recorded Sep 28, 2026201-500452 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8Exact matchOklahoma City, OK, United StatesHQ recorded Sep 28, 2026201-500403 contacts →

Exact match

“By rigorously maintaining the highest standards of legal excellence, the Oklahoma-based law firm of McAfee & Taft has grown to become one of the largest and most respected…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9Exact matchSalt Lake City, UT, United StatesHQ recorded Sep 28, 2026201-500381 contacts →

Exact match

“Parsons Behle & Latimer offers the resources and capabilities of a large and diverse firm, coupled with the highest levels of accessibility and responsiveness.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10Exact matchDallas, TX, United StatesHQ recorded Sep 28, 2026501-1,000327 contacts →

Exact match

“Thompson & Knight is now known as Holland & Knight.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11Exact matchPortland, ME, United StatesHQ recorded Sep 28, 2026201-500320 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12Exact matchCerritos, CA, United StatesHQ recorded Sep 28, 2026501-1,000294 contacts →

Exact match

“Chugh, LLP is a full-service law and tax firm with offices in Los Angeles, Santa Clara, San Diego, and Newark in CA, Edison, NJ, Atlanta, GA, Herndon, VA, New York, NY, Brentwood…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13Exact matchDenver, CO, United StatesHQ recorded Sep 28, 2026201-500283 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14Exact matchHouston, TX, United StatesHQ recorded Sep 28, 2026201-500271 contacts →

Exact match

“Schouest, Bamdas, Soshea & BenMaier PLLC is a law firm focused on your needs.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15Exact matchNew Orleans, LA, United StatesHQ recorded Sep 28, 2026201-500259 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16Exact matchDallas, TX, United StatesHQ recorded Sep 28, 2026201-500224 contacts →

Exact match

“In operation since 1978, KE Andrews is one of the largest state and local tax firms in the country, managing over $500 billion in assets.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17Exact matchHouston, TX, United StatesHQ recorded Sep 28, 2026201-500222 contacts →

Exact match

“Porter Hedges is recognized as one of the premier business law firms based in Houston.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18Exact matchWashington, DC, United StatesHQ recorded Sep 28, 202651-200174 contacts →

Exact match

“Van Ness Feldman is a nationally recognized mid-sized law firm specializing in the areas of energy, environment, and natural resources law and policy, with offices in Washington…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19Exact matchHouston, TX, United StatesHQ recorded Sep 28, 202651-200112 contacts →

Exact match

“Proud to call Texas home for more than 25 years, Andrews Myers is a corporate-focused law firm renowned for our proactive and practical approach to business and celebrated for our…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20Exact matchWest Palm Beach, FL, United StatesHQ recorded Sep 28, 2026201-500107 contacts →

Exact match

“Engineered Tax Services, Inc.(ETS) is a licensed engineering firm that focuses on federal, state, and local tax benefits.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21Exact matchHouston, TX, United StatesHQ recorded Sep 28, 202651-20092 contacts →

Exact match

“Oliva Gibbs is a nationally recognized law firm with offices in Columbus, OH, Houston, TX, Lafayette, LA, Midland, TX, Oklahoma City, OK, and San Antonio, TX.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22Exact matchPlano, TX, United StatesHQ recorded Sep 28, 202651-20088 contacts →

Exact match

“Ryan Law is headquartered in Plano, Texas, with offices across the United States and Canada.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23Exact matchHouston, TX, United StatesHQ recorded Sep 28, 202651-20085 contacts →

Exact match

“Kuiper Law Firm has established itself as a trusted legal partner for businesses across diverse industries.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24Exact matchAnnapolis, MD, United StatesHQ recorded Sep 28, 202651-20080 contacts →

Exact match

“Frost Law is comprised of skilled tax attorneys, business attorneys, litigation attorneys, estates attorneys, Certified Public Accountants, Certified Financial Planners, and other…”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25Exact matchLittle Rock, AR, United StatesHQ recorded Sep 28, 202651-20076 contacts →

Exact match

“A Professional Association 120 East 4th Street Little Rock, AR Rose Law Firm is the oldest and one of the largest law firms in Arkansas.”

Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase

Showing 25 of 665 energy tax law firms based in the United States

See the full list, filter by size, metro and specialty, and access 8,442 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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

As of Sep 28, 2026
58.6%Verified-email coverage
21.7Average contacts per company
1-10Median size (employees)
6.9%Largest-city concentration · Houston
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
428
11-50
186
51-200
28
201-500
14
501-1,000
5
1,001-5,000
1

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 665 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 tax 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 8,442 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 tax 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 tax law firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 665 company matches for energy tax 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?

Haynes And Boone, LLP tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most energy tax law firms?

Houston leads with 46 company records, followed by Washington (24) and New York (22).

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 8,442 professional contacts with verified work emails tracked across these 665 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.