Company lists · Data refreshed November 2026

Top 25 Steam plant engineering services based in the United States

Name: Steam plant engineering services based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 2, 2026 815 companies tracked

RevenueBase identified 815 company matches for steam plant engineering services associated with the United States as of November 2026 and tracks 24,935 professional contacts across them, including 7,909 with verified work emails. Houston is the largest hub.

This list covers company matches for steam plant engineering services associated with the United States, 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 2, 2026.

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 2, 2026 How this list was built

815Companies

24,935Contacts tracked

7,909Verified emails

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The 25 largest steam plant engineering services based in the United States

Ranked by team size

Top 25 of 815 company matches for steam plant engineering services based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 2, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Englobal	Exact match	Houston, TX, United StatesHQ recorded Nov 2, 2026	201-500	1,203 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
2	Wunderlich-Malec Engineering, INC	Exact match	Eden Prairie, MN, United StatesHQ recorded Nov 2, 2026	501-1,000	664 contacts →
	Exact match “Wunderlich-Malec Engineering is a nationally recognized, 100% employee-owned leader in advanced engineering and control system solutions.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
3	Vanderweil Engineers	Exact match	Boston, MA, United StatesHQ recorded Nov 2, 2026	201-500	562 contacts →
	Exact match “Vanderweil is a mechanical, electrical, plumbing, fire protection, technology, sustainability, commissioning, and power engineering firm dedicated to providing customized and…” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
4	Scmi INC	Exact match	Houston, TX, United StatesHQ recorded Nov 2, 2026	n/a	545 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
5	Arb, INC	Exact match	Irvine, CA, United StatesHQ recorded Nov 2, 2026	1,001-5,000	535 contacts →
	Exact match “ARB Inc.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
6	Contech Control Services	Exact match	La Porte, TX, United StatesHQ recorded Nov 2, 2026	1,001-5,000	514 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
7	GSE Solutions	Exact match	Columbia, MD, United StatesHQ recorded Nov 2, 2026	201-500	439 contacts →
	Exact match “GSE Solutions supports nuclear power and clean-energy fleets worldwide through integrated engineering services and software that strengthen operational performance.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
8	Sterling Engineering	Exact match	Westchester, IL, United StatesHQ recorded Nov 2, 2026	501-1,000	435 contacts →
	Exact match “Sterling is an award-winning professional engineering consulting and technical staffing company.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
9	C&i Engineering	Exact match	Louisville, KY, United StatesHQ recorded Nov 2, 2026	201-500	325 contacts →
	Exact match “Chemical & Industrial Engineering, Inc.(C&I) is a full-service Engineering, Design & Procurement firm, providing hands-on design expertise for increasing capacity, improving…” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
10	ARION	Exact match	Houston, TX, United StatesHQ recorded Nov 2, 2026	201-500	307 contacts →
	Exact match “We are A-Team of engineers specializing in the energy industry.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
11	GEM Incorporated	Exact match	Walbridge, OH, United StatesHQ recorded Nov 2, 2026	1,001-5,000	277 contacts →
	Exact match “Contractor for Life At GEM Inc, we’re experienced problem solvers with the insight, integrity and resources to see you through your toughest challenges.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
12	Dilling Group INC	Exact match	Logansport, IN, United StatesHQ recorded Nov 2, 2026	201-500	257 contacts →
	Exact match “Dilling Group Inc.(DGI) provides industrial and commercial solutions with exceptional value.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
13	BSI Engineering	Exact match	Mason, OH, United StatesHQ recorded Nov 2, 2026	201-500	247 contacts →
	Exact match “BSI Engineering is a full-service engineering consulting firm dedicated to delivering innovative, efficient, and effective solutions across various industries.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
14	Processbarron	Exact match	Pelham, AL, United StatesHQ recorded Nov 2, 2026	201-500	226 contacts →
	Exact match “With 40+ years of proven leadership in the design, manufacturing, installation, and service of heavy process equipment, ProcessBarron is the industry's total systems solutions…” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
15	Waldemar S. Nelson & Co., INC	Exact match	New Orleans, LA, United StatesHQ recorded Nov 2, 2026	201-500	220 contacts →
	Exact match “For over a half century our professional staff - in meeting technical, schedule, budget, and regulatory requirements - has successfully completed projects in the U.S.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
16	APM	Exact match	Pasadena, TX, United StatesHQ recorded Nov 2, 2026	5,001-10,000	219 contacts →
	Exact match “Empowering the People Who Power Life Safety \| Quality \| Integrity APM has your construction and maintenance solutions.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
17	Diamond Power International	Exact match	Lancaster, OH, United StatesHQ recorded Nov 2, 2026	201-500	209 contacts →
	Exact match “At Diamond Power, we partner with customers to tackle even the most complex boiler cleaning issues.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
18	Cleaver-Brooks Sales And Service	Exact match	Dallas, TX, United StatesHQ recorded Nov 2, 2026	201-500	198 contacts →
	Exact match “Cleaver-Brooks Sales and Service, is one of the most innovative and fastest growing boiler services companies in the United States.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
19	Electro Design Engineering, INC	Exact match	Riverview, FL, United StatesHQ recorded Nov 2, 2026	201-500	184 contacts →
	Exact match “Electro Design Engineering, Inc.(EDE) is a respected provider of engineering, automation, and construction services to a wide range of industries and markets coast to coast and…” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
20	DC Engineering	Exact match	Meridian, ID, United StatesHQ recorded Nov 2, 2026	51-200	180 contacts →
	Exact match “DC Engineering was founded in 1998 on the idea that a clear understanding of a project in the context of client’s goals, as well as the surrounding business and operational…” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
21	United Engineers & Constructors An Aecon Company	Exact match	Mount Laurel, NJ, United StatesHQ recorded Nov 2, 2026	201-500	161 contacts →
	Exact match “United Engineers & Constructors is an industry-leading infrastructure engineering, procurement, construction, and consulting company dedicated to improving lives by delivering the…” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
22	Dunham Associates, INC	Exact match	Minneapolis, MN, United StatesHQ recorded Nov 2, 2026	51-200	155 contacts →
	Exact match “Dunham is a full service mechanical and electrical consulting firm.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
23	Thermaltech Engineering	Exact match	Richland, MI, United StatesHQ recorded Nov 2, 2026	51-200	136 contacts →
	Exact match “ThermalTech Engineering has specialized in mechanical, electrical, & energy management engineering since 1980.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
24	The RMH Group, INC	Exact match	Lakewood, CO, United StatesHQ recorded Nov 2, 2026	51-200	134 contacts →
	Exact match “With corporate headquarters in Denver and offices in Phoenix and Los Angeles, The RMH Group is a mechanical, electrical, plumbing, and technology consulting engineering firm that…” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase
25	RLC Engineering	Exact match	Hallowell, ME, United StatesHQ recorded Nov 2, 2026	51-200	126 contacts →
	Exact match “Ingenuity, Integrity, and Passion.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “steam plant engineering services”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 815 steam plant engineering services based in the United States

See the full list, filter by size, metro and specialty, and access 7,909 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Steam plant engineering services based in the United States at a glance

As of Nov 2, 2026

31.7%Verified-email coverage

30.6Average contacts per company

11-50Median size (employees)

5.5%Largest-city concentration · Houston

Nov 2, 2026Page data refreshed

Companies by employee count

1-10

326

11-50

310

51-200

126

201-500

501-1,000

1,001-5,000

5,001-10,000

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 815 companies.

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.
What qualifies: Company records associated with the United States whose business descriptions match “steam plant engineering 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 7,909 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 2, 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.

Steam plant engineering services by metro

Steam plant engineering services in Houston45

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 “steam plant engineering services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many steam plant engineering services are there based in the United States?

RevenueBase identified 815 company matches for steam plant engineering services associated with the United States 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?

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

Which city has the most steam plant engineering services?

Houston leads with 45 company records, followed by Austin (9) and Charlotte (9).

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 7,909 professional contacts with verified work emails tracked across these 815 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 2, 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.