Company lists · Data refreshed September 2026

Top 25 Regulatory compliance consultants for energy based in the United States

RevenueBase identified 1,975 regulatory compliance consultants for energy headquartered in the United States as of September 2026 and tracks 26,694 professional contacts across them, including 12,390 with verified work emails. Houston is the largest hub.

This list covers regulatory compliance consultants for energy 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 17, 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 17, 2026 86% judged on-target in blind review
1,975Companies
26,694Contacts tracked
12,390Verified emails
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The 25 largest regulatory compliance consultants for energy based in the United States

Ranked by team size
Top 25 of 1,975 regulatory compliance consultants for energy based in the United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to regulatory compliance consultants for energy: 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 evidenceMinneapolis, MN, United StatesHQ checked Sep 17, 20261,001-5,0001,088 contacts →

Indirect evidence

“Barr provides engineering and environmental consulting services to clients across the Midwest, throughout the Americas, and around the world.”

Source: RevenueBase Database · checked Sep 17, 2026
2Indirect evidenceDecatur, AL, United StatesHQ checked Sep 17, 20261,001-5,000956 contacts →

Indirect evidence

“Alliance is a new kind of environmental services company-powered by innovation, focused on service, and committed to client success.”

Source: RevenueBase Database · checked Sep 17, 2026
3Indirect evidenceSt Paul, MN, United StatesHQ checked Sep 17, 20261,001-5,000658 contacts →

Indirect evidence

“Antea Group is an international engineering and environmental consulting firm specializing in full-service solutions in the fields of environment, health and safety, and…”

Source: RevenueBase Database · checked Sep 17, 2026
4Indirect evidenceMemphis, TN, United StatesHQ checked Sep 17, 2026201-500463 contacts →

Indirect evidence

“Innovation is not happenstance at EnSafe Inc.”

Source: RevenueBase Database · checked Sep 17, 2026
5Indirect evidenceWall Township, NJ, United StatesHQ checked Sep 17, 2026201-500447 contacts →

Indirect evidence

“We are Groundwater & Environmental Services, Inc, better known as GES.”

Source: RevenueBase Database · checked Sep 17, 2026
6Indirect evidenceIslandia, NY, United StatesHQ checked Sep 17, 2026201-500433 contacts →

Indirect evidence

“Founded 40 years ago, Roux is recognized for being a highly effective, client-focused environmental consulting and management firm.”

Source: RevenueBase Database · checked Sep 17, 2026
7Indirect evidenceKimberton, PA, United StatesHQ checked Sep 17, 2026201-500331 contacts →

Indirect evidence

“ALL4 is a global consulting firm committed to shaping a sustainable future through innovative environmental, health, and safety (EHS) and digital solutions.”

Source: RevenueBase Database · checked Sep 17, 2026
8Partial evidencePhiladelphia, PA, United StatesHQ checked Sep 17, 2026201-500330 contacts →

Partial evidence

“Customized Energy Solutions is at the forefront of competitive energy markets.”

Source: RevenueBase Database · checked Sep 17, 2026
9Partial evidenceMinneapolis, MN, United StatesHQ checked Sep 17, 2026201-500264 contacts →

Partial evidence

“Merjent is an environmental, restoration, and engineering consulting firm with a long history serving the energy industry.”

Source: RevenueBase Database · checked Sep 17, 2026
10Indirect evidenceSpring, TX, United StatesHQ checked Sep 17, 2026201-500253 contacts →

Indirect evidence

“For more than 40 years, M&H has been a trusted source for oil & gas consulting services that maximize value for clients.”

Source: RevenueBase Database · checked Sep 17, 2026
11Indirect evidenceClovis, CA, United StatesHQ checked Sep 17, 2026n/a233 contacts →

Indirect evidence

“Appl Inc is an environmental services company based out of 908 N Temperance Ave, Clovis, CA, United States.”

Source: RevenueBase Database · checked Sep 17, 2026
12Partial evidencePittsfield, ME, United StatesHQ checked Sep 17, 2026201-500218 contacts →

Partial evidence

“At Kleinschmidt, we work primarily with energy companies and government agencies in North America to protect and enhance the environment without compromising performance.”

Source: RevenueBase Database · checked Sep 17, 2026
13Indirect evidenceIndianapolis, IN, United StatesHQ checked Sep 17, 202651-200210 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 17, 2026
14Indirect evidenceUnion, NJ, United StatesHQ checked Sep 17, 2026201-500209 contacts →

Indirect evidence

“Hillmann has been a well-recognized leader in the Environmental Health & Safety, Due Diligence & Remediation Management, and Construction Services industries since 1985.”

Source: RevenueBase Database · checked Sep 17, 2026
15Indirect evidenceScottsdale, AZ, United StatesHQ checked Sep 17, 2026501-1,000201 contacts →

Indirect evidence

“Nuverra Environmental Solutions is a company dedicated to the protection, enhancement and advancement of environmental solutions.”

Source: RevenueBase Database · checked Sep 17, 2026
16Indirect evidenceBedford, NH, United StatesHQ checked Sep 17, 2026201-500189 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 17, 2026
17Indirect evidencePlano, TX, United StatesHQ checked Sep 17, 2026n/a169 contacts →

Indirect evidence

“We're your advocates.”

Source: RevenueBase Database · checked Sep 17, 2026
18Indirect evidenceOakland, CA, United StatesHQ checked Sep 17, 2026201-500166 contacts →

Indirect evidence

“Terraphase offers cost-effective solutions to complex environmental and engineering challenges.”

Source: RevenueBase Database · checked Sep 17, 2026
19Indirect evidenceRocklin, CA, United StatesHQ checked Sep 17, 202651-200166 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 17, 2026
20Partial evidenceHouston, TX, United StatesHQ checked Sep 17, 2026201-500157 contacts →

Partial evidence

“Atlas Field Services LLC (AFS) designs comprehensive, compliance-based training portfolios that offer business partners a premier safety training program, customized to their…”

Source: RevenueBase Database · checked Sep 17, 2026
21Indirect evidenceIndianapolis, IN, United StatesHQ checked Sep 17, 202651-200152 contacts →

Indirect evidence

“Founded in 1988, KERAMIDA is a multidisciplinary Sustainability, EHS & Engineering consulting firm grounded in evidence-based research and development.”

Source: RevenueBase Database · checked Sep 17, 2026
22Partial evidenceFolsom, CA, United StatesHQ checked Sep 17, 202651-200147 contacts →

Partial evidence

“Follow us to discover company developments, our energy clients' successes and employment opportunities.”

Source: RevenueBase Database · checked Sep 17, 2026
23Indirect evidenceElmhurst, IL, United StatesHQ checked Sep 17, 202651-200140 contacts →

Indirect evidence

“Since the passage of original environmental legislation nearly four decades ago, both private and public industry have turned to Mostardi Platt for guidance in complying with air…”

Source: RevenueBase Database · checked Sep 17, 2026
24Indirect evidenceClinton, MS, United StatesHQ checked Sep 17, 2026201-500139 contacts →

Indirect evidence

“E3 Environmental sets a high standard for environmental and industrial services, prioritizing safety, urgency, and efficiency.”

Source: RevenueBase Database · checked Sep 17, 2026
25Indirect evidenceDallas, TX, United StatesHQ checked Sep 17, 202651-200136 contacts →

Indirect evidence

“OUR MISSION is to combine sustainable environmental solutions with forward-thinking, cost-effective, innovative, and value-added technologies that balance our clients’ economic…”

Source: RevenueBase Database · checked Sep 17, 2026

Showing 25 of 1,975 regulatory compliance consultants for energy based in the United States

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Regulatory compliance consultants for energy based in the United States at a glance

As of Sep 17, 2026
46.4%Verified-email coverage
13.5Average contacts per company
1-10Median size (employees)
4.8%Largest-city concentration · Houston
Sep 17, 2026Page data refreshed

Companies by employee count

1-10
1,148
11-50
633
51-200
148
201-500
34
501-1,000
4
1,001-5,000
6

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 1,975 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 regulatory compliance consultants for energy, 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 “regulatory compliance consultants for energy”. 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 regulatory compliance consultants for energy), 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 regulatory compliance consultants for energy, 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, 12,390 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 17, 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 regulatory compliance consultants for energy, 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 regulatory compliance consultants for energy are there based in the United States?

RevenueBase identified 1,975 regulatory compliance consultants for energy 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?

Barr Engineering CO, headquartered in Minneapolis, tops this list with the largest team on record.

Which city has the most regulatory compliance consultants for energy?

Houston leads with 94 headquartered companies, followed by New York (48) and Austin (37).

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 12,390 verified decision-maker contacts tracked across these 1,975 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 17, 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.