Company lists · Data refreshed September 2026

Top 15 Energy infrastructure law firms based in Los Angeles, United States

RevenueBase identified 26 energy infrastructure law firms headquartered in Los Angeles, United States as of September 2026 and tracks 1,118 professional contacts across them, including 664 with verified work emails. Across the United States, Houston is the largest hub for this category (152 companies); Los Angeles has 26.

This list covers energy infrastructure law firms headquartered in Los Angeles, 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
26Companies
1,118Contacts tracked
664Verified emails
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The 15 largest energy infrastructure law firms based in Los Angeles, United States

Ranked by team size
Top 15 of 26 energy infrastructure law firms based in Los Angeles, 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 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
1Partial evidenceLos Angeles, CA, United StatesHQ checked Sep 28, 2026201-500332 contacts →

Partial evidence

“Nossaman LLP is a national law firm with attorneys and policy advisors located in 12 offices throughout the United States.”

Source: RevenueBase Database · checked Sep 28, 2026
2Indirect evidenceLos Angeles, CA, United StatesHQ checked Sep 28, 2026201-500270 contacts →

Indirect evidence

“Cox, Castle & Nicholson LLP was founded in Los Angeles in 1968, with the goal of providing superior and comprehensive legal services to businesses, institutions, and individuals…”

Source: RevenueBase Database · checked Sep 28, 2026
3Partial evidenceLos Angeles, CA, United StatesHQ checked Sep 28, 2026201-500204 contacts →

Partial evidence

“Musick Peeler, a premier law firm with over 80 attorneys across five offices in major commercial centers of California, exemplifies excellence in legal service.”

Source: RevenueBase Database · checked Sep 28, 2026
4Indirect evidenceLos Angeles, CA, United StatesHQ checked Sep 28, 202651-200104 contacts →

Indirect evidence

“Richards, Watson & Gershon delivers practical advice and solutions tailored to the unique needs of public entities.”

Source: RevenueBase Database · checked Sep 28, 2026
5Partial evidenceLos Angeles, CA, United StatesHQ checked Sep 28, 202651-20060 contacts →

Partial evidence

“Professional Management Services Company specialized in Transit, Highway and Energy Industries.”

Source: RevenueBase Database · checked Sep 28, 2026
6Indirect evidenceLos Angeles, CA, United StatesHQ checked Sep 28, 202611-5041 contacts →

Indirect evidence

“David Orbach and David Huff founded the firm in 1997 and Phil Henderson joined in 2009.”

Source: RevenueBase Database · checked Sep 28, 2026
7Partial evidenceLos Angeles, CA, United StatesHQ checked Sep 28, 202611-5017 contacts →

Partial evidence

“With more than a century of combined experience at some of the preeminent Am Law 50 international law firms, our lawyers bring extensive experience in complex litigation and…”

Source: RevenueBase Database · checked Sep 28, 2026
8Partial evidenceLos Angeles, CA, United StatesHQ checked Sep 28, 20261-1011 contacts →

Partial evidence

“Rand Paster & Nelson LLP is a boutique law firm practicing in the fields of land use, government, municipal advocacy, and environmental law, including associated litigation.”

Source: RevenueBase Database · checked Sep 28, 2026
9Partial evidenceLos Angeles, CA, United StatesHQ checked Sep 28, 202611-509 contacts →

Partial evidence

“The Law Offices of Anthony O.”

Source: RevenueBase Database · checked Sep 28, 2026
10Indirect evidenceLos Angeles, CA, United StatesHQ checked Sep 28, 202611-507 contacts →

Indirect evidence

“Steinbrecher & Span LLP is a preeminent Los Angeles #businesslitigation, transactional and regulatory firm with offices in downtown Los Angeles, California, Washington, D.C.”

Source: RevenueBase Database · checked Sep 28, 2026
11Strong evidenceLos Angeles, CA, United StatesHQ checked Sep 28, 20261-103 contacts →

Strong evidence

“Telecom Law Firm, PC represents and advises private and government clients in transactional and regulatory matters related to telecommunications, including wireless infrastructure…”

Source: RevenueBase Database · checked Sep 28, 2026
12Partial evidenceLos Angeles, CA, United StatesHQ checked Sep 28, 20261-102 contacts →

Partial evidence

“Williams & Associates is a Los Angeles based law firm.”

Source: RevenueBase Database · checked Sep 28, 2026
13Partial evidenceLos Angeles, CA, United StatesHQ checked Sep 28, 20261-102 contacts →

Partial evidence

“We are a full service environmental and land use law firm, offering preventative legal advice combined with the full spectrum of litigation services, including alternative dispute…”

Source: RevenueBase Database · checked Sep 28, 2026
14Indirect evidenceLos Angeles, CA, United StatesHQ checked Sep 28, 20261-102 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 28, 2026
15Strong evidenceLos Angeles, CA, United StatesHQ checked Sep 28, 20261-101 contacts →

Strong evidence

“Forrest Environmental Law is a boutique law firm specializing in regulatory compliance, energy and utility law, environmental litigation, and the permitting and development of…”

Source: RevenueBase Database · checked Sep 28, 2026

Showing 15 of 26 energy infrastructure law firms based in Los Angeles, United States

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Energy infrastructure law firms based in Los Angeles, United States at a glance

As of Sep 28, 2026
59.4%Verified-email coverage
43.0Average contacts per company
1-10Median size (employees)
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
13
11-50
8
51-200
2
201-500
3

Email recency for this list is measured across the whole United States list rather than for Los Angeles, so it is reported there. Company counts and contact totals on this page are exact for Los Angeles, over 26 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 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 Los Angeles, United States whose own description of what they do matches “energy 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 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 infrastructure law firms, and records with no verified work email. Companies headquartered outside Los Angeles 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, 664 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 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 infrastructure law firms are there based in Los Angeles, United States?

RevenueBase identified 26 energy infrastructure law firms headquartered in Los Angeles, 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?

Nossaman LLP, headquartered in Los Angeles, tops this list with the largest team on record.

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

Houston leads the United States with 152 headquartered companies, followed by New York (67) and Washington (63). Los Angeles has 26.

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 664 verified decision-maker contacts tracked across these 26 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.