Company lists · Data refreshed November 2026

Top 25 Plant commissioning services worldwide

RevenueBase identified 1,509 company matches for plant commissioning services worldwide as of November 2026 and tracks 25,808 professional contacts across them, including 5,132 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers company matches for plant commissioning services worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for plant commissioning services follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
1,509Companies
25,808Contacts tracked
5,132Verified emails
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The 25 largest plant commissioning services worldwide

Ranked by team size
Top 25 of 1,509 company matches for plant commissioning services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchCork, IrelandHQ recorded Nov 6, 2026501-1,0001,312 contacts →

Exact match

“Dornan Engineering concentrates on a market where quality is appreciated.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchAtyrau, KazakhstanHQ recorded Nov 6, 20261,001-5,000952 contacts →

Exact match

“Novus Bolashak are a Full Service Systems Completion & Long Term Maintenance & Operations Contractor, including Procurement, Sub-contracting, Punch Identification & Clearing, Pre…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchTehran, IranHQ recorded Nov 6, 20261,001-5,000884 contacts →

Exact match

“Oil Industries’ Commissioning and Operation Company (OICO) is incorporated to manage and execute commissioning and start-up, operation, maintenance and professional training for…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchMaryland Heights, MI, United StatesHQ recorded Nov 6, 2026501-1,000678 contacts →

Exact match

“Electric Power Systems is an independent electrical testing & engineering organization.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchHouston, United StatesHQ recorded Nov 6, 2026n/a549 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchDubai, United Arab EmiratesHQ recorded Nov 6, 2026501-1,000475 contacts →

Exact match

“CSI Engineering serves as an engineering-led construction management partner for complex building projects, coordinating design consultants, contractors, and specialist trades…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchDoha, QatarHQ recorded Nov 6, 20261,001-5,000418 contacts →

Exact match

“Black Cat Engineering & Construction WLL (BCEC) has been serving the industry in Qatar for three decades.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchMclean, VA, United StatesHQ recorded Nov 6, 2026201-500411 contacts →

Exact match

“Founded in 2005, the vision behind Primary Integration (PI) was to build the most elite mission critical commissioning/data center commissioning and operational risk management…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchTokyo, Hong KongHQ recorded Nov 6, 2026201-500398 contacts →

Exact match

“Commtech Asia is a market-leading, independent building commissioning consultant.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchItajubá, BrazilHQ recorded Nov 6, 2026501-1,000394 contacts →

Exact match

“A MV Power preza pela satisfação do cliente, buscando sempre a maior qualidade através de uma equipe apta e o uso dos melhores equipamentos.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchAnchorage, AK, United StatesHQ recorded Nov 6, 2026201-500247 contacts →

Exact match

“Udelhoven Company founded in 1970 is a privately held full service construction, operations and maintenance company offering diversified products and services from oil field…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchLas Palmas De Gran Canaria, SpainHQ recorded Nov 6, 202651-200235 contacts →

Exact match

“IPROCEL es una empresa multinacional fundada en 1993 especializada en la prestación de servicios de ingeniería, puesta en marcha, operación y mantenimiento de sistemas eléctricos…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchSt. Louis, MO, United StatesHQ recorded Nov 6, 2026n/a232 contacts →

Exact match

“Zodiac, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchIndonesiaHQ recorded Nov 6, 2026201-500231 contacts →

Exact match

“WahanaKarsa Swandiri is a company based out of Indonesia.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchEdmonton, TX, CanadaHQ recorded Nov 6, 2026201-500223 contacts →

Exact match

“FourQuest Energy is a global leader in pre-commissioning, commissioning, and pipeline services for the energy industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchNaas, TX, IrelandHQ recorded Nov 6, 202651-200215 contacts →

Exact match

“OFS was established in 2002 to meet the growing needs of the international Oil & Gas, Power Generation and Energy markets.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchSydney, United KingdomHQ recorded Nov 6, 20261,001-5,000208 contacts →

Exact match

“Leaders in Engineering, Construction and Commissioning.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchNewark, DE, United StatesHQ recorded Nov 6, 2026201-500203 contacts →

Exact match

“We understand you want to be recognized for your reputation of reliable and efficient project completion.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchSharjah, United Arab EmiratesHQ recorded Nov 6, 2026501-1,000203 contacts →

Exact match

“An integrated service provided with offices across GCC, South East Asia and India providing pre-commissioning and commissioning services for Pipelines, Oil and Gas Plants…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchRaleigh, CO, United StatesHQ recorded Nov 6, 202651-200202 contacts →

Exact match

“PCI provides calibration, commissioning, and consulting solutions for the life sciences industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchTehran, IranHQ recorded Nov 6, 20261,001-5,000200 contacts →

Exact match

“We are proud to present over a half century of our history, beginning with formation of the Ofogh Consulting Engineers Company in 1961.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchLittle Island, IrelandHQ recorded Nov 6, 2026201-500181 contacts →

Exact match

“Hanley Calibration was established in 1992 to provide Calibration and Commissioning services to the Pharmaceutical, Biotechnology and Medical Device industries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchKennesaw, NJ, United StatesHQ recorded Nov 6, 202651-200176 contacts →

Exact match

“Rubicon Technical Services (RTS) offers innovative solutions for commissioning, testing, optimizing, operating, and maintaining critical facilities that depend on electrical…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchWhitstable, United KingdomHQ recorded Nov 6, 202651-200170 contacts →

Exact match

“Recognised by the Financial Times as one of Europe's top 500 fastest-growing companies for three years running, Global Commissioning is the leading authority in data centre…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchPasadena, TX, United StatesHQ recorded Nov 6, 202651-200166 contacts →

Exact match

“B&W Energy Services has a wealth of experience in preplanning the pre-commissioning cleaning process on large scale complex projects worldwide.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 1,509 plant commissioning services worldwide

See the full list, filter by size, metro and specialty, and access 5,132 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Plant commissioning services worldwide at a glance

As of Nov 6, 2026
19.9%Verified-email coverage
17.1Average contacts per company
11-50Median size (employees)
1.2%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
712
11-50
483
51-200
211
201-500
65
501-1,000
16
1,001-5,000
9
5,001-10,000
1

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for plant commissioning services are linked below.
What qualifies
Company records worldwide whose business descriptions match “plant commissioning services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 5,132 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Plant commissioning services by location

8 lists · largest first

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

Countries

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “plant commissioning services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many plant commissioning services are there worldwide?

RevenueBase identified 1,509 company matches for plant commissioning services worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Dornan tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most plant commissioning services?

The United States leads with 268 companies, followed by the United Kingdom (148) and Brazil (62). Every plant commissioning services list by country and city is linked on this page.

Which city has the most plant commissioning services?

Houston leads with 18 company records, followed by London (17) and Tehran (15).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 5,132 professional contacts with verified work emails tracked across these 1,509 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.