Company lists · Data refreshed October 2026

Top 20 Energy infrastructure attorneys based in Washington, United States

RevenueBase identified 25 company matches for energy infrastructure attorneys associated with Washington, United States as of October 2026 and tracks 960 professional contacts across them, including 518 with verified work emails. Across the United States, Houston is the largest hub for this category (40 companies); Washington follows with 25.

This list covers company matches for energy infrastructure attorneys associated with Washington, 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 October 12, 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 Oct 12, 2026 How this list was built
25Companies
960Contacts tracked
518Verified emails
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The 20 largest energy infrastructure attorneys based in Washington, United States

Ranked by team size
Top 20 of 25 company matches for energy infrastructure attorneys based in Washington, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 12, 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 matchWashington, DC, United StatesHQ recorded Oct 12, 2026201-500331 contacts →

Exact match

“Beveridge & Diamond’s 170+ lawyers in 7 U.S.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
2Exact matchWashington, DC, United StatesHQ recorded Oct 12, 202651-200178 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 · Oct 12, 2026 · View company records in RevenueBase
3Exact matchWashington, OK, United StatesHQ recorded Oct 12, 202651-20090 contacts →

Exact match

“McDonald Land Services is a premier national full-service land broker dedicated to serving the energy industry.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
4Exact matchWashington, DC, United StatesHQ recorded Oct 12, 202651-20079 contacts →

Exact match

“Founded in Astris Finance, a Colliers company, is an independent financial advisory firm specialized in the Infrastructure and Energy (I&E) sectors with an exceptional track…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5Exact matchWashington, DC, United StatesHQ recorded Oct 12, 2026n/a47 contacts →

Exact match

“John & Hengerer LLP represents and advises energy companies, inlcuding natural gas producers, importers, processors, and marketers; gas and liquids pipeline operators; gas storage…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
6Exact matchWashington, DC, United StatesHQ recorded Oct 12, 202611-5038 contacts →

Exact match

“For over 70 years, Wright & Talisman has been a steady partner with energy companies helping them navigate the complexities of the Federal Energy Regulatory Commission (FERC) and…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
7Exact matchWashington, DC, United StatesHQ recorded Oct 12, 202611-5031 contacts →

Exact match

“Spiegel & McDiarmid LLP was formed to represent the public side of our nation’s critical infrastructure industries, including energy, telecommunications and transportation.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8Exact matchWashington, DC, United StatesHQ recorded Oct 12, 202611-5029 contacts →

Exact match

“Since its founding in 1971, DWG & P, has provided a broad range of counseling, regulatory, litigation and legislative services to clients in every region of the country.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
9Exact matchWashington, DC, United StatesHQ recorded Oct 12, 202611-5020 contacts →

Exact match

“InterAgency provides preconstruction consulting for the Washington Metro Area’s most complex and challenging infrastructure projects.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
10Exact matchWashington, DC, United StatesHQ recorded Oct 12, 20261-1020 contacts →

Exact match

“Amis, Patel & Brewer, LLP is a boutique law firm focused on providing legal services to the renewable energy and sustainability sectors.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11Exact matchWashington, DC, United StatesHQ recorded Oct 12, 202611-5018 contacts →

Exact match

“Rock Creek Energy Group is a group of diverse and like-minded professionals with a shared passion – Energy.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12Exact matchWashington, DC, United StatesHQ recorded Oct 12, 20261-1017 contacts →

Exact match

“Harkins Cunningham LLP is a law firm engaged in optimizing risk and opportunities in complex matters in highly regulated and politicized environments.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
13Exact matchWashington, DC, United StatesHQ recorded Oct 12, 202611-5016 contacts →

Exact match

“Slover & Loftus, LLP is a national law firm founded in 1967 and specializing in commercial transactions, litigation and arbitration in the fields of energy, transportation and…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
14Exact matchWashington, DC, United StatesHQ recorded Oct 12, 20261-1012 contacts →

Exact match

“Sustainable Strategies DC is a government affairs and strategic consulting firm based in Washington, DC, that helps clients secure resources for community revitalization and tools…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
15Exact matchWashington, DC, United StatesHQ recorded Oct 12, 202611-507 contacts →

Exact match

“Serving the energy needs of large manufacturers.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
16Exact matchWashington, DC, United StatesHQ recorded Oct 12, 20261-105 contacts →

Exact match

“Washington Energy Law LLP was established in 2023 by career energy lawyers.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17Exact matchWashington, DC, United StatesHQ recorded Oct 12, 20261-104 contacts →

Exact match

“Kanner & Associates, LLC is a government relations consulting firm specializing in the energy industry.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
18Exact matchWashington, DC, United StatesHQ recorded Oct 12, 20261-102 contacts →

Exact match

“Infrastructure Economic Consulting, LLC (IEC) helps private investors, States and state-owned entities, and law firms worldwide to navigate the economics of regulatory policies…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
19Exact matchWashington, DC, United StatesHQ recorded Oct 12, 20261-101 contacts →

Exact match

“We are an US-based advisory firm specialized in supporting energy and infrastructure developers, investors, and operators through the disruptions facing their industries today.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
20Exact matchWashington, DC, United StatesHQ recorded Oct 12, 20261-101 contacts →

Exact match

“Engleman Fallon, PLLC brings more that 50 years of Energy Regulatory and Litigation experience to address complex client needs in a cost-effective manner.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase

Showing 20 of 25 energy infrastructure attorneys based in Washington, United States

See the full list, filter by size, metro and specialty, and access 518 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Energy infrastructure attorneys based in Washington, United States at a glance

As of Oct 12, 2026
54.0%Verified-email coverage
38.4Average contacts per company
1-10Median size (employees)
Oct 12, 2026Page data refreshed

Companies by employee count

1-10
13
11-50
8
51-200
3
201-500
1

Email recency for this list is measured across the whole United States list rather than for Washington, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 25 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 Washington, United States whose business descriptions match “energy infrastructure attorneys” 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 518 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 October 12, 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 infrastructure attorneys by metro in the United States

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 infrastructure attorneys”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many energy infrastructure attorneys are there based in Washington, United States?

RevenueBase identified 25 company matches for energy infrastructure attorneys associated with Washington, United States as of October 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?

Beveridge & Diamond PC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most energy infrastructure attorneys?

Houston leads the United States with 40 company records, followed by Washington (25) and Denver (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 518 professional contacts with verified work emails tracked across these 25 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 October 12, 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.