Company lists · Data refreshed September 2026

Top 25 Plant operations consulting firms worldwide

Name: Plant operations consulting firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 11,070 companies tracked

RevenueBase identified 11,070 plant operations consulting firms worldwide as of September 2026 and tracks 156,038 professional contacts across them, including 31,767 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers plant operations consulting firms worldwide, 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 29, 2026. Country and city lists for plant operations consulting firms follow the table.

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 29, 2026 86% judged on-target in blind review

11,070Companies

156,038Contacts tracked

31,767Verified emails

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The 25 largest plant operations consulting firms worldwide

Ranked by team size

Top 25 of 11,070 plant operations consulting firms worldwide, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to plant operations consulting 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Hexagon Asset Lifecycle Intelligence	Indirect evidence	Madison, AL, United StatesHQ checked Sep 29, 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 29, 2026
2	NAES	Indirect evidence	Issaquah, WA, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,956 contacts →
	Indirect evidence “NAES is the power generation industry’s largest independent services provider, with more than 40 years of experience managing risk and turning it into profits.” Source: RevenueBase Database · checked Sep 29, 2026
3	Dietsmann	Strong evidence	Fontvieille, MonacoHQ checked Sep 29, 2026	5,001-10,000	1,843 contacts →
	Strong evidence “Dietsmann is the leading independent specialist in Operation & Maintenance services for continuous-production plant in the oil & gas and power industries with over 40 years of…” Source: RevenueBase Database · checked Sep 29, 2026
4	Sendan International Company	Partial evidence	Jubail Industrial City, Saudi ArabiaHQ checked Sep 29, 2026	1,001-5,000	1,595 contacts →
	Partial evidence “Founded in 1994, Sendan has rapidly grown from a modest contractor to a reputable General Contractor for Plant Construction and Maintenance.” Source: RevenueBase Database · checked Sep 29, 2026
5	Confipetrol S.A	Indirect evidence	Bogotá, ColombiaHQ checked Sep 29, 2026	1,001-5,000	1,580 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026
6	Bilfinger Engineering	Partial evidence	Schiedam, NetherlandsHQ checked Sep 29, 2026	1,001-5,000	1,535 contacts →
	Partial evidence “Engineering for greenfield plants or modification and modernization projects for brownfield plants: Bilfinger delivers the optimized solution for our customers in terms of…” Source: RevenueBase Database · checked Sep 29, 2026
7	EKIUM	Indirect evidence	Lyon Cedex 07, FranceHQ checked Sep 29, 2026	1,001-5,000	1,502 contacts →
	Indirect evidence “Welcome to Ekium!” Source: RevenueBase Database · checked Sep 29, 2026
8	Paul Wurth S.A	Indirect evidence	LuxembourgHQ checked Sep 29, 2026	201-500	1,156 contacts →
	Indirect evidence “Rooted and founded in Luxembourg more than a 150 years ago, Paul Wurth is a valued industrial engineering partner in the global ironmaking industry.” Source: RevenueBase Database · checked Sep 29, 2026
9	Excel Group	Indirect evidence	Baton Rouge, LA, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,042 contacts →
	Indirect evidence “EXCEL is a leading provider of industrial construction services, including maintenance, turnarounds, fabrication, and disaster recovery.” Source: RevenueBase Database · checked Sep 29, 2026
10	Sindus Andritz	Indirect evidence	Porto Alegre, BrazilHQ checked Sep 29, 2026	1,001-5,000	932 contacts →
	Indirect evidence “A Sindus ANDRITZ é uma empresa do Grupo ANDRITZ, onde atuam equipes das divisões Maintenance & Performance, ANDRITZ Automation e Metris Technology, além do suporte a outras…” Source: RevenueBase Database · checked Sep 29, 2026
11	M. N. Dastur & Co. P LTD	Indirect evidence	Kolkata, IndiaHQ checked Sep 29, 2026	1,001-5,000	894 contacts →
	Indirect evidence “M.” Source: RevenueBase Database · checked Sep 29, 2026
12	Starcon International, INC	Indirect evidence	La Porte, TX, United StatesHQ checked Sep 29, 2026	1,001-5,000	866 contacts →
	Indirect evidence “Starcon is a national, full-service contractor offering comprehensive industrial and mechanical services in the oil & gas/refining, chemical/petrochemical, natural gas processing…” Source: RevenueBase Database · checked Sep 29, 2026
13	Contract Resources PTY LTD	Indirect evidence	Perth, United StatesHQ checked Sep 29, 2026	501-1,000	741 contacts →
	Indirect evidence “Contract Resources have been providing specialised industrial services for over 30 years to the heavy process industries in Australia, New Zealand and the Middle East.” Source: RevenueBase Database · checked Sep 29, 2026
14	Tequaly	Indirect evidence	Curitiba, BrazilHQ checked Sep 29, 2026	1,001-5,000	733 contacts →
	Indirect evidence “Há 30 anos presente no setor industrial, a Tequaly é referência em soluções integradas para o setor industrial na América Latina.” Source: RevenueBase Database · checked Sep 29, 2026
15	Emthos Engenharia Ltda	Indirect evidence	Catu, BrazilHQ checked Sep 29, 2026	1,001-5,000	708 contacts →
	Indirect evidence “Na Emthos, atuamos como parceiros estratégicos das empresas, não apenas como prestadores de serviço.” Source: RevenueBase Database · checked Sep 29, 2026
16	Grupo Sereng	Indirect evidence	Vitória, BrazilHQ checked Sep 29, 2026	201-500	707 contacts →
	Indirect evidence “A SERENG é uma empresa de engenharia especializada em Projetos, Consultoria, Gerenciamento, Apoio Técnico e Gestão de Ativos (Manutenção), atuando nos mais diversos segmentos…” Source: RevenueBase Database · checked Sep 29, 2026
17	EDG	Indirect evidence	Metairie, LA, United StatesHQ checked Sep 29, 2026	501-1,000	700 contacts →
	Indirect evidence “EDG Inc.” Source: RevenueBase Database · checked Sep 29, 2026
18	Sigma Industry	Indirect evidence	Stockholm, SwedenHQ checked Sep 29, 2026	1,001-5,000	688 contacts →
	Indirect evidence “Sigma Industry har tagit ett långsiktigt åtagande för att förnya konsultbranschen inom ingenjörstjänster.” Source: RevenueBase Database · checked Sep 29, 2026
19	USA Debusk	Indirect evidence	Deer Park, TX, United StatesHQ checked Sep 29, 2026	1,001-5,000	640 contacts →
	Indirect evidence “USA DeBusk serves the industrial infrastructure sector through a diverse and complementary suite of high-value traditional and specialty services for turnarounds, routine…” Source: RevenueBase Database · checked Sep 29, 2026
20	Hvac Engineering, INC	Indirect evidence	United StatesHQ checked Sep 29, 2026	n/a	636 contacts →
	Indirect evidence “Mechanical Engineering Consultants” Source: RevenueBase Database · checked Sep 29, 2026
21	Tamoin	Indirect evidence	Erandio/ Altzaga, SpainHQ checked Sep 29, 2026	1,001-5,000	630 contacts →
	Indirect evidence “TAMOIN, fundada en 1956, es en la actualidad una sociedad empresarial de GTM Grupo, en constante evolución hacia la especialización en servicios industriales.” Source: RevenueBase Database · checked Sep 29, 2026
22	Scania Industrial Maintenance AB	Indirect evidence	Södertälje, SwedenHQ checked Sep 29, 2026	501-1,000	627 contacts →
	Indirect evidence “Scania Industrial Maintenance support Scania in Sweden with technical services.” Source: RevenueBase Database · checked Sep 29, 2026
23	Sitech	Indirect evidence	Geleen, NetherlandsHQ checked Sep 29, 2026	501-1,000	594 contacts →
	Indirect evidence “To maximize results Sitech helps companies in the processing and chemical industries and companies in the energy sector to grow and develop further.” Source: RevenueBase Database · checked Sep 29, 2026
24	PT Tracon Industri	Indirect evidence	Dki Jakarta, IndonesiaHQ checked Sep 29, 2026	201-500	578 contacts →
	Indirect evidence “PT.” Source: RevenueBase Database · checked Sep 29, 2026
25	Applied Consultants	Indirect evidence	Longview, TX, United StatesHQ checked Sep 29, 2026	501-1,000	578 contacts →
	Indirect evidence “Since 1991, Applied Consultants Inc.” Source: RevenueBase Database · checked Sep 29, 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: plant operations consulting firms. 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 plant operations consulting firms.
Partial evidence: Its own public description names part of plant operations consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name plant operations consulting firms. 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 11,070 plant operations consulting firms worldwide

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Plant operations consulting firms worldwide at a glance

As of Sep 29, 2026

20.4%Verified-email coverage

14.1Average contacts per company

1-10Median size (employees)

1.4%Largest-city concentration · Sao Paulo

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

6,485

11-50

3,035

51-200

1,044

201-500

268

501-1,000

103

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 plant operations consulting 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.
Coverage: Every country. Country and city lists for plant operations consulting firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “plant operations consulting 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 plant operations consulting 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 plant operations consulting firms, and records with no verified work email.
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, 31,767 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 29, 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.

Plant operations consulting firms by location

44 lists · largest first

Every Plant operations consulting firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 plant operations consulting 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 plant operations consulting firms are there worldwide?

RevenueBase identified 11,070 plant operations consulting firms worldwide 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?

Hexagon Asset Lifecycle Intelligence, headquartered in Madison, tops this list with the largest team on record.

Which country has the most plant operations consulting firms?

The United States leads with 1,626 companies, followed by Brazil (1,279) and Italy (487). Every plant operations consulting firms list by country and city is linked on this page.

Which city has the most plant operations consulting firms?

Sao Paulo leads with 151 headquartered companies, followed by Houston (135) and Tehran (78).

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 31,767 verified decision-maker contacts tracked across these 11,070 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 29, 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.