Company lists · Data refreshed September 2026

Top 25 Process control system consultants based in the United States

Name: Process control system consultants based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 5,070 companies tracked

RevenueBase identified 5,070 process control system consultants headquartered in the United States as of September 2026 and tracks 150,518 professional contacts across them, including 59,644 with verified work emails. Houston is the largest hub.

This list covers process control system consultants 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 21, 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 21, 2026 86% judged on-target in blind review

5,070Companies

150,518Contacts tracked

59,644Verified emails

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The 25 largest process control system consultants based in the United States

Ranked by team size

Top 25 of 5,070 process control system consultants based in the United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to process control system consultants: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Zachry Group	Indirect evidence	San Antonio, TX, United StatesHQ checked Sep 21, 2026	10001+	6,824 contacts →
	Indirect evidence “Zachry Group is North America's pacesetter in turnkey engineering, construction, maintenance, turnaround and fabrication services to the energy, chemicals, power, manufacturing…” Source: RevenueBase Database · checked Sep 21, 2026
2	Ips-Integrated Project Services	Indirect evidence	Blue Bell, PA, United StatesHQ checked Sep 21, 2026	1,001-5,000	3,577 contacts →
	Indirect evidence “IPS, a Berkshire Hathaway company, is a global leader in technical consulting, architecture, engineering, procurement, construction management, commissioning, qualification…” Source: RevenueBase Database · checked Sep 21, 2026
3	Entrust Solutions Group	Indirect evidence	Lisle, IL, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,966 contacts →
	Indirect evidence “ENTRUST Solutions Group, an ENR Top 100 company, provides comprehensive and dependable engineering, consulting, and automation services to pipeline companies, gas and electric…” Source: RevenueBase Database · checked Sep 21, 2026
4	Hexagon Asset Lifecycle Intelligence	Indirect evidence	Madison, AL, United StatesHQ checked Sep 21, 2026	10001+	2,630 contacts →
	Indirect evidence “Hexagon’s Asset Lifecycle Intelligence division helps clients design, construct and operate more profitable, safe and sustainable industrial facilities.” Source: RevenueBase Database · checked Sep 21, 2026
5	Advanced Technology Services ATS	Indirect evidence	Peoria, IL, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,216 contacts →
	Indirect evidence “Advanced Technology Services, Inc.(ATS) is a single source for industrial maintenance, technology and parts, offering a complete solution for support, training, monitoring and…” Source: RevenueBase Database · checked Sep 21, 2026
6	The Haskell Company	Indirect evidence	Jacksonville, FL, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,213 contacts →
	Indirect evidence “Haskell delivers over $3 billion annually in Architecture, Engineering, Construction (AEC) and Consulting solutions to assure certainty of outcome for complex capital projects…” Source: RevenueBase Database · checked Sep 21, 2026
7	Mitsubishi Electric Automation, INC	Indirect evidence	Vernon Hills, IL, United StatesHQ checked Sep 21, 2026	n/a	2,012 contacts →
	Indirect evidence “The sole mission of Mitsubishi Electric Automation Americas, is to support the factory automation needs of North and Latin American customers with combined sales, marketing…” Source: RevenueBase Database · checked Sep 21, 2026
8	Hargrove Engineers & Constructors	Partial evidence	Mobile, AL, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,877 contacts →
	Partial evidence “Hargrove is a full-service engineering, procurement, and construction management firm delivering multi-discipline engineering, project delivery, controls & automation, and…” Source: RevenueBase Database · checked Sep 21, 2026
9	Audubon Companies	Indirect evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,488 contacts →
	Indirect evidence “Founded in 1997, Audubon Companies LLC provides EPC, consulting, fabrication, and field services to energy and industrial operators across the globe.” Source: RevenueBase Database · checked Sep 21, 2026
10	GRAY	Indirect evidence	Lexington, KY, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,477 contacts →
	Indirect evidence “Founded by James Norris and Lois Howard Gray in 1960, Gray is a family-owned, fully integrated industrial design-builder specializing in engineering, architecture, construction…” Source: RevenueBase Database · checked Sep 21, 2026
11	ISC Constructors, L.L.C	Partial evidence	Baton Rouge, LA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,384 contacts →
	Partial evidence “ISC is an industrial engineering and construction company specializing in comprehensive electrical, instrumentation, and controls solutions.” Source: RevenueBase Database · checked Sep 21, 2026
12	Englobal	Indirect evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	201-500	1,183 contacts →
	Indirect evidence “Who We Are Englobal Founded in 1985, ENGlobal (NASDAQ: ENG) is a specialty engineering services firm that focuses on automation solutions and select EPCM projects for the energy…” Source: RevenueBase Database · checked Sep 21, 2026
13	Rovisys	Partial evidence	Aurora, OH, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,159 contacts →
	Partial evidence “As one of the world's largest independent systems integrators, RoviSys delivers comprehensive automation, digital transformation, manufacturing execution (MES), Industrial AI…” Source: RevenueBase Database · checked Sep 21, 2026
14	Mckenney's, INC	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,077 contacts →
	Indirect evidence “McKenney’s is the Southeast’s most trusted name in facility construction, operation and maintenance.” Source: RevenueBase Database · checked Sep 21, 2026
15	ARI	Indirect evidence	East Peoria, IL, United StatesHQ checked Sep 21, 2026	1,001-5,000	979 contacts →
	Indirect evidence “ARi is a global engineering firm headquartered in East Peoria, Illinois, USA offering services for: Embedded Software, Product Engineering, Manufacturing Engineering and Testing &…” Source: RevenueBase Database · checked Sep 21, 2026
16	Convergix Automation Solutions	Indirect evidence	Auburn Hills, MI, United StatesHQ checked Sep 21, 2026	501-1,000	942 contacts →
	Indirect evidence “Convergix Automation Solutions designs, engineers and integrates hardware and software to automate its customers' operations.” Source: RevenueBase Database · checked Sep 21, 2026
17	Interstates	Indirect evidence	Sioux Center, IA, United StatesHQ checked Sep 21, 2026	1,001-5,000	938 contacts →
	Indirect evidence “As a Partner Interstates is your trusted partner for electrical, automation, and operational technology needs.” Source: RevenueBase Database · checked Sep 21, 2026
18	Stellar	Indirect evidence	Jacksonville, FL, United StatesHQ checked Sep 21, 2026	501-1,000	899 contacts →
	Indirect evidence “Stellar, headquartered in Jacksonville, Florida, is a fully integrated firm focusing on design, engineering, construction, refrigeration, and mechanical and electrical services…” Source: RevenueBase Database · checked Sep 21, 2026
19	Intech Automation & Intelligence	Indirect evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	501-1,000	879 contacts →
	Indirect evidence “INTECH Automation & Intelligence is a globally renowned industrial automation & digitalization technology company.” Source: RevenueBase Database · checked Sep 21, 2026
20	Coffman Engineers	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	501-1,000	859 contacts →
	Indirect evidence “The right team is more than an advantage.” Source: RevenueBase Database · checked Sep 21, 2026
21	Prime Controls	Partial evidence	Lewisville, TX, United StatesHQ checked Sep 21, 2026	1,001-5,000	857 contacts →
	Partial evidence “Prime Controls was established as a Main Automation Contractor to provide customers a sole source solution for Industrial Automation services and products.” Source: RevenueBase Database · checked Sep 21, 2026
22	Awc, INC	Partial evidence	Baton Rouge, LA, United StatesHQ checked Sep 21, 2026	501-1,000	848 contacts →
	Partial evidence “We love our customers and are committed to providing Better Automation and Controls Solutions, Products, Engineering, Services and Support to them.” Source: RevenueBase Database · checked Sep 21, 2026
23	Flanders	Indirect evidence	Evansville, IN, United StatesHQ checked Sep 21, 2026	501-1,000	789 contacts →
	Indirect evidence “FLANDERS, Leverage our legacy.” Source: RevenueBase Database · checked Sep 21, 2026
24	Kendall Electric	Indirect evidence	Portage, MI, United StatesHQ checked Sep 21, 2026	501-1,000	751 contacts →
	Indirect evidence “Your Possibility.” Source: RevenueBase Database · checked Sep 21, 2026
25	Kinetics	Strong evidence	Livermore, CA, United StatesHQ checked Sep 21, 2026	1,001-5,000	734 contacts →
	Strong evidence “Founded in 1973, Kinetics is a full-service process and mechanical contractor specializing in the design and installation of process, mechanical, plumbing and HVAC systems.” Source: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: process control system consultants. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names process control system consultants.
Partial evidence: Its own public description names part of process control system consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name process control system consultants. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 5,070 process control system consultants based in the United States

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Process control system consultants based in the United States at a glance

As of Sep 21, 2026

39.6%Verified-email coverage

29.7Average contacts per company

11-50Median size (employees)

3.9%Largest-city concentration · Houston

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

2,198

11-50

1,799

51-200

745

201-500

207

501-1,000

1,001-5,000

10001+

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 5,070 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 process control system consultants, 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 “process control system consultants”. 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 process control system consultants), 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 process control system consultants, 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, 59,644 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 21, 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.

Process control system consultants by metro

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 process control system consultants, 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 process control system consultants are there based in the United States?

RevenueBase identified 5,070 process control system consultants 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?

Zachry Group, headquartered in San Antonio, tops this list with the largest team on record.

Which city has the most process control system consultants?

Houston leads with 200 headquartered companies, followed by Atlanta (33) and Austin (32).

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 59,644 verified decision-maker contacts tracked across these 5,070 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 21, 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.