Company lists · Data refreshed September 2026

Top 25 Energy sector accounting firms based in the United States

RevenueBase identified 1,470 energy sector accounting firms headquartered in the United States as of September 2026 and tracks 18,017 professional contacts across them, including 8,050 with verified work emails. Houston is the largest hub.

This list covers energy sector accounting firms headquartered in the 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
1,470Companies
18,017Contacts tracked
8,050Verified emails
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The 25 largest energy sector accounting firms based in the United States

Ranked by team size
Top 25 of 1,470 energy sector accounting firms based in the 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 sector accounting 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 evidenceAnaheim, CA, United StatesHQ checked Sep 28, 20261,001-5,000851 contacts →

Indirect evidence

“Willdan (NASDAQ: WLDN) provides professional consulting and technical services to utilities, public agencies and private industry throughout the United States.”

Source: RevenueBase Database · checked Sep 28, 2026
2Partial evidenceSan Antonio, TX, United StatesHQ checked Sep 28, 20261,001-5,000770 contacts →

Partial evidence

“Pioneer Energy Services is now Patterson-UTI”

Source: RevenueBase Database · checked Sep 28, 2026
3Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 28, 2026501-1,000619 contacts →

Partial evidence

“Novogradac is among the nation’s top 40 certified public accounting and consulting firms with more than 25 offices nationwide.”

Source: RevenueBase Database · checked Sep 28, 2026
4Indirect evidenceMiami, FL, United StatesHQ checked Sep 28, 2026201-500361 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 28, 2026
5Partial evidenceLos Angeles, CA, United StatesHQ checked Sep 28, 2026201-500261 contacts →

Partial evidence

“Gursey | Schneider LLP is a premier Los Angeles accounting firm headquartered in Century City, the center of the financial and entertainment community.”

Source: RevenueBase Database · checked Sep 28, 2026
6Partial evidenceHouston, TX, United StatesHQ checked Sep 28, 2026201-500258 contacts →

Partial evidence

“Opportune LLP is a leading global business advisory firm focused on adding value to clients across multiple industries with preeminence in energy.”

Source: RevenueBase Database · checked Sep 28, 2026
7Partial evidencePortland, OR, United StatesHQ checked Sep 28, 2026n/a257 contacts →

Partial evidence

“Kindercare Learing Center is an Accounting company located in 650 NE Holladay St # 1400, Portland, Oregon, United States.”

Source: RevenueBase Database · checked Sep 28, 2026
8Indirect evidenceRaleigh, NC, United StatesHQ checked Sep 28, 2026201-500231 contacts →

Indirect evidence

“Thomas, Judy and Tucker, P.A.”

Source: RevenueBase Database · checked Sep 28, 2026
9Partial evidenceNaperville, IL, United StatesHQ checked Sep 28, 2026201-500223 contacts →

Partial evidence

“Lauterbach & Amen, LLP (L&A), established in 1997 by partners Sherry Lauterbach and Ron Amen, is a reputable public accounting firm known for its unwavering dedication to quality…”

Source: RevenueBase Database · checked Sep 28, 2026
10Indirect evidenceMidwest, IL, United StatesHQ checked Sep 28, 202651-200212 contacts →

Indirect evidence

“Founded in 1931, Kerber, Eck & Braeckel LLP (KEB) is a mid-sized firm of certified public accountants and management consultants with eight offices in three Midwestern states.”

Source: RevenueBase Database · checked Sep 28, 2026
11Partial evidenceElk Grove Village, IL, United StatesHQ checked Sep 28, 202651-200191 contacts →

Partial evidence

“Porte Brown LLC is a full service accounting and consulting firm headquartered in the Chicago suburb of Elk Grove Village, Illinois.”

Source: RevenueBase Database · checked Sep 28, 2026
12Indirect 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
13Partial evidenceMontgomery, AL, United StatesHQ checked Sep 28, 202651-200177 contacts →

Partial evidence

“Jackson Thornton, an accounting and consulting firm of more than 200 accountants and business consultants, applies more than a century of experience to serve over clients across a…”

Source: RevenueBase Database · checked Sep 28, 2026
14Indirect evidenceEast Brunswick, NJ, United StatesHQ checked Sep 28, 202651-200172 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 28, 2026
15Partial evidenceHouston, TX, United StatesHQ checked Sep 28, 2026201-500171 contacts →

Partial evidence

“TPH & Co, the energy business of Perella Weinberg, provides strategic and financial advice to investors, management teams, boards of directors, government bodies, and other…”

Source: RevenueBase Database · checked Sep 28, 2026
16Indirect evidencePlano, TX, United StatesHQ checked Sep 28, 2026n/a169 contacts →

Indirect evidence

“We're your advocates.”

Source: RevenueBase Database · checked Sep 28, 2026
17Partial evidenceRochester, NY, United StatesHQ checked Sep 28, 202651-200158 contacts →

Partial evidence

“EFPR, a Springline company, is one of Western New York’s largest accounting and business consulting firms serving clients across the United States and around the globe.”

Source: RevenueBase Database · checked Sep 28, 2026
18Partial evidenceMadison, WI, United StatesHQ checked Sep 28, 202651-200157 contacts →

Partial evidence

“PSE is an electrical energy expert that provides relationship-driven engineering and consulting services for forward-thinking partners who pursue long-term energy solutions.”

Source: RevenueBase Database · checked Sep 28, 2026
19Partial evidenceSarasota, FL, United StatesHQ checked Sep 28, 202651-200152 contacts →

Partial evidence

“You need an accounting professional with the benefits of a reputable and resourceful firm.”

Source: RevenueBase Database · checked Sep 28, 2026
20Indirect evidenceMaumee, OH, United StatesHQ checked Sep 28, 202651-200136 contacts →

Indirect evidence

“William Vaughan Company (WVC) is a premier, Ohio-based professional services firm providing comprehensive tax, attestation, and advisory solutions to clients locally, nationally…”

Source: RevenueBase Database · checked Sep 28, 2026
21Indirect evidenceSt. Paul, MN, United StatesHQ checked Sep 28, 202651-200133 contacts →

Indirect evidence

“Olsen Thielen & Co, Ltd.”

Source: RevenueBase Database · checked Sep 28, 2026
22Indirect evidenceAlexandria, VA, United StatesHQ checked Sep 28, 202651-200133 contacts →

Indirect evidence

“KWC is a team of accountants and advisors all dedicated to the founding principle of providing Quality Personal Service.”

Source: RevenueBase Database · checked Sep 28, 2026
23Partial evidencePittsburgh, PA, United StatesHQ checked Sep 28, 202651-200133 contacts →

Partial evidence

“Sisterson is one of the largest independently-owned certified public accounting and financial consulting firms in the Pittsburgh area.”

Source: RevenueBase Database · checked Sep 28, 2026
24Partial evidenceDallas, TX, United StatesHQ checked Sep 28, 202651-200128 contacts →

Partial evidence

“Merit Advisors provides our partners in the energy industry with the best financial solutions and vision to uncover overlooked savings.”

Source: RevenueBase Database · checked Sep 28, 2026
25Indirect evidenceTyler, TX, United StatesHQ checked Sep 28, 202651-200122 contacts →

Indirect evidence

“Welcome to SDS Petroleum Consultants company page In Scott Stovall founded SDS Petroleum Consultants L.L.C.”

Source: RevenueBase Database · checked Sep 28, 2026

Showing 25 of 1,470 energy sector accounting firms based in the United States

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Energy sector accounting firms based in the United States at a glance

As of Sep 28, 2026
44.7%Verified-email coverage
12.3Average contacts per company
1-10Median size (employees)
6.6%Largest-city concentration · Houston
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
939
11-50
397
51-200
107
201-500
16
501-1,000
4
1,001-5,000
3
5,001-10,000
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 1,470 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 sector accounting 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 the United States whose own description of what they do matches “energy sector accounting 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 sector accounting 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 sector accounting firms, and records with no verified work email. Companies headquartered outside United States 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, 8,050 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 sector accounting 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 sector accounting firms are there based in the United States?

RevenueBase identified 1,470 energy sector accounting firms headquartered in the 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?

Willdan, headquartered in Anaheim, tops this list with the largest team on record.

Which city has the most energy sector accounting firms?

Houston leads with 97 headquartered companies, followed by New York (40) and Dallas (29).

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 8,050 verified decision-maker contacts tracked across these 1,470 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.