Company lists · Data refreshed September 2026

Top 24 Energy and infrastructure law firms based in Seattle, United States

RevenueBase identified 36 energy and infrastructure law firms headquartered in Seattle, United States as of September 2026 and tracks 3,611 professional contacts across them, including 2,755 with verified work emails. Across the United States, Houston is the largest hub for this category (193 companies); Seattle has 36.

This list covers energy and infrastructure law firms headquartered in Seattle, 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 28, 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 28, 2026 86% judged on-target in blind review
36Companies
3,611Contacts tracked
2,755Verified emails
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The 24 largest energy and infrastructure law firms based in Seattle, United States

Ranked by team size
Top 24 of 36 energy and infrastructure law firms based in Seattle, United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to energy and infrastructure 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceSeattle, WA, United StatesHQ checked Sep 28, 20261,001-5,0002,746 contacts →

Indirect evidence

“Perkins Coie has combined with Ashurst to form Ashurst Perkins Coie.”

Source: RevenueBase Database · checked Sep 28, 2026
2Partial evidenceSeattle, WA, United StatesHQ checked Sep 28, 2026201-500253 contacts →

Partial evidence

“Foster Garvey PC is a full-service law firm serving several of the most influential and innovative companies and governments in the country.”

Source: RevenueBase Database · checked Sep 28, 2026
3Indirect evidenceSeattle, WA, United StatesHQ checked Sep 28, 2026201-500181 contacts →

Indirect evidence

“Utilicast is more than just a consulting company.”

Source: RevenueBase Database · checked Sep 28, 2026
4Partial evidenceSeattle, WA, United StatesHQ checked Sep 28, 202611-5043 contacts →

Partial evidence

“The law firm of Betts Patterson Mines traces its origins to a firm that was founded in 1899.”

Source: RevenueBase Database · checked Sep 28, 2026
5Indirect evidenceSeattle, WA, United StatesHQ checked Sep 28, 202651-20029 contacts →

Indirect evidence

“With deep roots in the Pacific Northwest and Alaska, Oles Morrison has built a legal practice with a focus on construction, government contracts, commercial litigation and real…”

Source: RevenueBase Database · checked Sep 28, 2026
6Partial evidenceSeattle, WA, United StatesHQ checked Sep 28, 202611-5027 contacts →

Partial evidence

“When expanding globally, businesses need a law firm that understands both local intricacies and worldwide opportunities.**Harris Sliwoski** delivers cross-border legal services…”

Source: RevenueBase Database · checked Sep 28, 2026
7Indirect evidenceSeattle, WA, United StatesHQ checked Sep 28, 202611-5027 contacts →

Indirect evidence

“Ahlers Cressman & Sleight PLLC proudly provides its clients unsurpassed service.”

Source: RevenueBase Database · checked Sep 28, 2026
8Partial evidenceSeattle, WA, United StatesHQ checked Sep 28, 202611-5018 contacts →

Partial evidence

“Cascadia Law Group PLLC provides clients with the most effective environmental representation available in our region.”

Source: RevenueBase Database · checked Sep 28, 2026
9Indirect evidenceSeattle, WA, United StatesHQ checked Sep 28, 202611-5017 contacts →

Indirect evidence

“We have delivered innovative solutions to the real estate and business industry for over 30 years.”

Source: RevenueBase Database · checked Sep 28, 2026
10Indirect evidenceSeattle, WA, United StatesHQ checked Sep 28, 20261-1015 contacts →

Indirect evidence

“Our clients, whether international corporations or family-owned businesses, compete in a challenging economic and regulatory environment.”

Source: RevenueBase Database · checked Sep 28, 2026
11Indirect evidenceSeattle, WA, United StatesHQ checked Sep 28, 20261-1010 contacts →

Indirect evidence

“Our clients are focused on building, growing, and running their businesses.”

Source: RevenueBase Database · checked Sep 28, 2026
12Indirect evidenceSeattle, WA, United StatesHQ checked Sep 28, 20261-109 contacts →

Indirect evidence

“Our clients range from solo entrepreneurs to family businesses, franchises, and even multi-national corporations.”

Source: RevenueBase Database · checked Sep 28, 2026
13Partial evidenceSeattle, WA, United StatesHQ checked Sep 28, 202611-509 contacts →

Partial evidence

“Coopersmith Law + Strategy is a law and strategic consulting firm that helps clients resolve challenges spanning business, law, policy, and operations.”

Source: RevenueBase Database · checked Sep 28, 2026
14Indirect evidenceSeattle, WA, United StatesHQ checked Sep 28, 202611-509 contacts →

Indirect evidence

“With today’s technological advances and evolving industries, Chung, Malhas & Mantel, PLLC has been approached with the magnificent opportunity of representing not only American…”

Source: RevenueBase Database · checked Sep 28, 2026
15Indirect evidenceSeattle, WA, United StatesHQ checked Sep 28, 20261-108 contacts →

Indirect evidence

“Plauché & Carr attorneys serve as advocates and counselors to our clients regarding legal and regulatory issues related to natural resource based activities, primarily in marine…”

Source: RevenueBase Database · checked Sep 28, 2026
16Indirect evidenceSeattle, WA, United StatesHQ checked Sep 28, 20261-107 contacts →

Indirect evidence

“Truss Faber provides legal counsel to the construction and manufacturing industries and companies involved in government contracts.”

Source: RevenueBase Database · checked Sep 28, 2026
17Partial evidenceSeattle, WA, United StatesHQ checked Sep 28, 20261-107 contacts →

Partial evidence

“We are a Seattle-based law firm specializing in government contract law, with all its unique complexities.”

Source: RevenueBase Database · checked Sep 28, 2026
18Indirect evidenceSeattle, WA, United StatesHQ checked Sep 28, 202611-506 contacts →

Indirect evidence

“Our clients seek a practical and straightforward approach to their transactions and legal problems.”

Source: RevenueBase Database · checked Sep 28, 2026
19Indirect evidenceSeattle, WA, United StatesHQ checked Sep 28, 20261-106 contacts →

Indirect evidence

“We provide sophisticated dispute resolution and transactional services-in the collegial atmosphere of a smaller firm-to individuals, businesses and other organizations.”

Source: RevenueBase Database · checked Sep 28, 2026
20Partial evidenceSeattle, WA, United StatesHQ checked Sep 28, 20261-105 contacts →

Partial evidence

“Northwest Resource Law was founded in 2017 by lawyers with decades of big-firm experience dedicated to serving Pacific Northwest businesses.”

Source: RevenueBase Database · checked Sep 28, 2026
21Partial evidenceSeattle, WA, United StatesHQ checked Sep 28, 20261-103 contacts →

Partial evidence

“Pipinich Law, PLLC is a business and maritime law firm located in Seattle, WA.”

Source: RevenueBase Database · checked Sep 28, 2026
22Indirect evidenceSeattle, WA, United StatesHQ checked Sep 28, 20261-102 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 28, 2026
23Indirect evidenceSeattle, WA, United StatesHQ checked Sep 28, 20261-102 contacts →

Indirect evidence

“Welcome to Legate LLP, your trusted partner in business formation and restructuring.”

Source: RevenueBase Database · checked Sep 28, 2026
24Indirect evidenceSeattle, WA, United StatesHQ checked Sep 28, 20261-101 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 28, 2026

Showing 24 of 36 energy and infrastructure law firms based in Seattle, United States

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

As of Sep 28, 2026
76.3%Verified-email coverage
100.3Average contacts per company
1-10Median size (employees)
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
20
11-50
9
51-200
3
201-500
3
1,001-5,000
1

Email recency for this list is measured across the whole United States list rather than for Seattle, so it is reported there. Company counts and contact totals on this page are exact for Seattle, over 36 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 and infrastructure 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 Seattle, United States whose own description of what they do matches “energy and infrastructure 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 and infrastructure 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 and infrastructure law firms, and records with no verified work email. Companies headquartered outside Seattle 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, 2,755 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.

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 and infrastructure 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 and infrastructure law firms are there based in Seattle, United States?

RevenueBase identified 36 energy and infrastructure law firms headquartered in Seattle, 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?

Perkins Coie, headquartered in Seattle, tops this list with the largest team on record.

Which city in the United States has the most energy and infrastructure law firms?

Houston leads the United States with 193 headquartered companies, followed by New York (193) and Washington (125). Seattle has 36.

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 2,755 verified decision-maker contacts tracked across these 36 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.