Company lists · Data refreshed September 2026

Top 25 Refinery control systems integrators based in the United States

Name: Refinery control systems integrators based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 1,113 companies tracked

RevenueBase identified 1,113 refinery control systems integrators headquartered in the United States as of September 2026 and tracks 31,273 professional contacts across them, including 14,392 with verified work emails and 13,330 with mobile numbers. Houston is the largest hub.

This list covers refinery control systems integrators 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 5, 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 5, 2026 86% judged on-target in blind review

1,113Companies

31,273Contacts tracked

14,392Verified emails

13,330Mobile numbers

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The 25 largest refinery control systems integrators based in the United States

Ranked by team size

Top 25 of 1,113 refinery control systems integrators based in the United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to refinery control systems integrators: 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	Entrust Solutions Group	Indirect evidence	Lisle, IL, United StatesHQ checked Sep 5, 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 5, 2026
2	Englobal	Indirect evidence	Houston, TX, United StatesHQ checked Sep 5, 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 5, 2026
3	Rovisys	Strong evidence	Aurora, OH, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,159 contacts →
	Strong 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 5, 2026
4	Prime Controls	Partial evidence	Lewisville, TX, United StatesHQ checked Sep 5, 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 5, 2026
5	Puffer-Sweiven	Indirect evidence	Stafford, TX, United StatesHQ checked Sep 5, 2026	501-1,000	688 contacts →
	Indirect evidence “Puffer‑Sweiven has supported process operations for over 80 years-helping facilities run safer, smarter, and more reliably.” Source: RevenueBase Database · checked Sep 5, 2026
6	Setpoint Integrated Solutions, INC	Partial evidence	Baton Rouge, LA, United StatesHQ checked Sep 5, 2026	501-1,000	626 contacts →
	Partial evidence “Setpoint Integrated Solutions, a Vytl Company is a leading integrated solutions and services provider in the process control industry.” Source: RevenueBase Database · checked Sep 5, 2026
7	Wunderlich-Malec Engineering, INC	Strong evidence	Eden Prairie, MN, United StatesHQ checked Sep 5, 2026	501-1,000	623 contacts →
	Strong evidence “Wunderlich-Malec Engineering is a nationally recognized, 100% employee-owned leader in advanced engineering and control system solutions.” Source: RevenueBase Database · checked Sep 5, 2026
8	E Tech Group	Partial evidence	West Chester, OH, United StatesHQ checked Sep 5, 2026	501-1,000	610 contacts →
	Partial evidence “E Tech Group is one of the largest engineering and system integration firms in the United States.” Source: RevenueBase Database · checked Sep 5, 2026
9	W-Industries	Strong evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	501-1,000	552 contacts →
	Strong evidence “Our expertise encompasses the full spectrum of system technologies from pneumatic - hydraulic control systems to state of the art programmable solutions to chemical injection…” Source: RevenueBase Database · checked Sep 5, 2026
10	Ingenero	Indirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	501-1,000	532 contacts →
	Indirect evidence “Ingenero's goal is to be the best process engineering firm by delivering the highest quality service and software solutions at the lowest cost.” Source: RevenueBase Database · checked Sep 5, 2026
11	Contech Control Services	Partial evidence	La Porte, TX, United StatesHQ checked Sep 5, 2026	1,001-5,000	512 contacts →
	Partial evidence “When we formed Contech in 1980, our goal was to create a specialized engineering and construction company to provide a full range of system independent services for process…” Source: RevenueBase Database · checked Sep 5, 2026
12	Ardent Services, LLC	Partial evidence	Covington, LA, United StatesHQ checked Sep 5, 2026	51-200	467 contacts →
	Partial evidence “Ardent Services, LLC (Ardent) is a leading provider of high-quality power, control, process-automation, and electrical and instrumentation (E&I) services for process industries…” Source: RevenueBase Database · checked Sep 5, 2026
13	Thermo Systems	Strong evidence	East Windsor, NJ, United StatesHQ checked Sep 5, 2026	201-500	455 contacts →
	Strong evidence “Thermo Systems is a full-service control systems integration partner, providing world-class automation solutions within the Energy, Life Sciences, and Mission Critical markets.” Source: RevenueBase Database · checked Sep 5, 2026
14	The Stronghold Companies	Partial evidence	La Porte, TX, United StatesHQ checked Sep 5, 2026	5,001-10,000	419 contacts →
	Partial evidence “As part of the Quanta Services Family of Companies (NYSE: PWR)- Stronghold provides the safest, leanest, most efficient, quality solutions for the refinery, petrochemical and…” Source: RevenueBase Database · checked Sep 5, 2026
15	Mangan INC	Indirect evidence	Long Beach, CA, United StatesHQ checked Sep 5, 2026	201-500	395 contacts →
	Indirect evidence “Mangan Inc, an Automation & Engineering Firm, provides the highest quality services for the Refining, Gas & Oil, Pipeline, Renewable, Chemical, and Biopharm Industries.” Source: RevenueBase Database · checked Sep 5, 2026
16	Matrix Technologies, INC	Indirect evidence	Maumee, OH, United StatesHQ checked Sep 5, 2026	201-500	382 contacts →
	Indirect evidence “Matrix Technologies Inc.” Source: RevenueBase Database · checked Sep 5, 2026
17	Tesco Controls	Strong evidence	Sacramento, CA, United StatesHQ checked Sep 5, 2026	201-500	313 contacts →
	Strong evidence “Tesco Controls, a UFT Company, is a full service systems integrator and original equipment manufacturer specializing in the WATER/WASTEWATER, TRANSPORTATION and ELECTRIC UTILITY…” Source: RevenueBase Database · checked Sep 5, 2026
18	Inactive Barry-Wehmiller International B-Wi	Indirect evidence	St. Louis, MO, United StatesHQ checked Sep 5, 2026	n/a	262 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 5, 2026
19	MKD Electric	Strong evidence	Elgin, IL, United StatesHQ checked Sep 5, 2026	201-500	245 contacts →
	Strong evidence “MKD Electric is one of the Midwest’s largest full-service merit shop industrial electrical contractors, specializing in instrumentation and control systems integration.” Source: RevenueBase Database · checked Sep 5, 2026
20	Experitec INC	Indirect evidence	Chesterfield, MO, United StatesHQ checked Sep 5, 2026	201-500	239 contacts →
	Indirect evidence “Experitec has served the industry for over 100 years, partnering with its customers to gain competitive advantages and unlock the hidden potential in their facilities.” Source: RevenueBase Database · checked Sep 5, 2026
21	LSI	Strong evidence	Memphis, TN, United StatesHQ checked Sep 5, 2026	201-500	225 contacts →
	Strong evidence “LOGICAL SYSTEMS (LSI) is an outcome-driven systems integrator specializing in process improvement, electrical engineering, automation, systems integration, and manufacturing…” Source: RevenueBase Database · checked Sep 5, 2026
22	Applied Control Engineering, INC	Partial evidence	Newark, DE, United StatesHQ checked Sep 5, 2026	201-500	225 contacts →
	Partial evidence “Since 1991, Applied Control Engineering (ACE) has prioritized close collaboration with our customers to design, implement, and support advanced control, automation, and…” Source: RevenueBase Database · checked Sep 5, 2026
23	Actemium Avanceon	Strong evidence	Exton, PA, United StatesHQ checked Sep 5, 2026	51-200	221 contacts →
	Strong evidence “Avanceon, under VINCI Energies brand Actemium, is a systems integrator company that develops, executes, and supports automation/information solutions for manufacturing and utility…” Source: RevenueBase Database · checked Sep 5, 2026
24	Grantek	Strong evidence	Oak Brook, IL, United StatesHQ checked Sep 5, 2026	201-500	220 contacts →
	Strong evidence “Grantek is a system integrator and solution provider with a specialization in Manufacturing IT solutions, Manufacturing Automation solutions, Industrial Safety solutions and…” Source: RevenueBase Database · checked Sep 5, 2026
25	Multi-Dimensional Integration	Indirect evidence	Shrewsbury, PA, United StatesHQ checked Sep 5, 2026	201-500	204 contacts →
	Indirect evidence “MDI is a one stop shop for all of your automation needs.” Source: RevenueBase Database · checked Sep 5, 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: refinery control systems integrators. 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 refinery control systems integrators.
Partial evidence: Its own public description names part of refinery control systems integrators, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name refinery control systems integrators. 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 1,113 refinery control systems integrators based in the United States

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Refinery control systems integrators based in the United States at a glance

As of Sep 5, 2026

46.0%Verified-email coverage

42.6%Mobile-number coverage

28.1Average contacts per company

11-50Median size (employees)

4.9%Largest-city concentration · Houston

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

465

11-50

436

51-200

154

201-500

501-1,000

1,001-5,000

5,001-10,000

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

13,3630–30

93731–60

1261–90

690–180

74180+

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 refinery control systems integrators, 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 “refinery control systems integrators”. 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 refinery control systems integrators), 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 refinery control systems integrators, 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, 14,392 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 5, 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.

Refinery control systems integrators by metro

Refinery control systems integrators in Houston55

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 refinery control systems integrators, 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 refinery control systems integrators are there based in the United States?

RevenueBase identified 1,113 refinery control systems integrators 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?

Entrust Solutions Group, headquartered in Lisle, tops this list with the largest team on record.

Which city has the most refinery control systems integrators?

Houston leads with 55 headquartered companies, followed by Baton Rouge (10) and Corpus Christi (7).

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 14,392 verified decision-maker contacts tracked across these 1,113 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 5, 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.