Company lists · Data refreshed October 2026

Top 25 Energy systems engineering services based in Houston, United States

Name: Energy systems engineering services based in Houston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 25, 2026 249 companies tracked

RevenueBase identified 249 company matches for energy systems engineering services associated with Houston, United States as of October 2026 and tracks 37,246 professional contacts across them, including 10,558 with verified work emails. Across the United States, Houston is the largest hub for this category.

This list covers company matches for energy systems engineering services associated with Houston, 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 October 25, 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 Oct 25, 2026 How this list was built

249Companies

37,246Contacts tracked

10,558Verified emails

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The 25 largest energy systems engineering services based in Houston, United States

Ranked by team size

Top 25 of 249 company matches for energy systems engineering services based in Houston, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 25, 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	Mcdermott International, LTD	Exact match	Houston, TX, United StatesHQ recorded Oct 25, 2026	10001+	21,087 contacts →
	Exact match “McDermott is a premier provider of engineering and construction solutions to the energy industry.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
2	LJA	Exact match	Houston, TX, United StatesHQ recorded Oct 25, 2026	1,001-5,000	2,148 contacts →
	Exact match “Employee-Owned.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
3	Audubon Companies	Exact match	Houston, TX, United StatesHQ recorded Oct 25, 2026	1,001-5,000	1,652 contacts →
	Exact match “Founded in 1997, Audubon Companies LLC provides EPC, consulting, fabrication, and field services to energy and industrial operators across the globe.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
4	Englobal	Exact match	Houston, TX, United StatesHQ recorded Oct 25, 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 · Oct 25, 2026 · View company records in RevenueBase
5	Gulf Companies	Exact match	Houston, TX, United StatesHQ recorded Oct 25, 2026	1,001-5,000	1,171 contacts →
	Exact match “At Gulf Companies, we are driven by our mission to serve a vital role in the global energy industry.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
6	Capco Energy	Exact match	Houston, TX, United StatesHQ recorded Oct 25, 2026	1,001-5,000	844 contacts →
	Exact match “For 25 years Capco’s Energy practice has combined innovative thinking with deep industry knowledge to provide business consulting, digital transformation and technology services…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
7	Saber Power	Exact match	Houston, TX, United StatesHQ recorded Oct 25, 2026	1,001-5,000	570 contacts →
	Exact match “Saber Power Services, a portfolio company of Greenbelt Capital Partners, is a fully integrated electrical power system services firm providing end-to-end solutions across utility…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
8	Scmi INC	Exact match	Houston, TX, United StatesHQ recorded Oct 25, 2026	n/a	545 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
9	Bastion Technologies, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 25, 2026	501-1,000	503 contacts →
	Exact match “Bastion Technologies is a multi-disciplined engineering and technical services company headquartered in Houston, Texas.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
10	ARION	Exact match	Houston, TX, United StatesHQ recorded Oct 25, 2026	201-500	307 contacts →
	Exact match “We are A-Team of engineers specializing in the energy industry.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
11	DBR	Exact match	Houston, TX, United StatesHQ recorded Oct 25, 2026	201-500	235 contacts →
	Exact match “Founded in 1972, DBR has evolved into the premier MEP engineering firm in Texas, providing mechanical, electrical, and plumbing engineering services, as well as building…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
12	CAM Integrated Solutions	Exact match	Houston, TX, United StatesHQ recorded Oct 25, 2026	201-500	195 contacts →
	Exact match “CAM Integrated Solutions (“CAM”) is a full-service energy solutions provider uniquely situated for the Upstream and Midstream markets.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
13	Zentech Incorporated	Exact match	Houston, TX, United StatesHQ recorded Oct 25, 2026	51-200	191 contacts →
	Exact match “Zentech, Inc, an engineering consulting and software development company, headquartered in Houston, TX, is comprised of experienced professionals specializing in providing…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
14	Gate Energy Project Delivery	Exact match	Houston, TX, United StatesHQ recorded Oct 25, 2026	201-500	186 contacts →
	Exact match “GATE Energy, a 100% employee-owned ESOP, provides predictable project delivery services to the energy sector.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
15	Tph&co	Exact match	Houston, TX, United StatesHQ recorded Oct 25, 2026	201-500	168 contacts →
	Exact match “TPH & Co, the energy business of Perella Weinberg, provides strategic and financial advice to investors, management teams, boards of directors, government bodies, and other…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
16	Ceis Critical Energy Infrastructure Services	Exact match	Houston, TX, United StatesHQ recorded Oct 25, 2026	201-500	167 contacts →
	Exact match “Critical Energy Infrastructure Services (CEIS) is a nationally recognized leader in delivering strategic project solutions that support America’s energy infrastructure and…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
17	Progressive	Exact match	Houston, TX, United StatesHQ recorded Oct 25, 2026	51-200	143 contacts →
	Exact match “Progressive is a global staffing company connecting STEM talent with leading companies in the Power and Utilities, Renewable Energy, Oil and Gas, and Manufacturing industries.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
18	Shah Smith & Associates, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 25, 2026	51-200	138 contacts →
	Exact match “Shah Smith & Associates, Inc.(SSA) is a 120+ employee Mechanical, Electrical, and Plumbing (MEP) consulting engineering firm with offices in Houston, Austin & Dallas.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
19	PPI Quality & Engineering, LLC	Exact match	Houston, TX, United StatesHQ recorded Oct 25, 2026	201-500	137 contacts →
	Exact match “PPI Quality & Engineering, a member of the Kiwa group of companies, saves its clients millions by providing economic solutions for complicated projects for the renewable energy…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
20	Perc Engineering	Exact match	Houston, TX, United StatesHQ recorded Oct 25, 2026	51-200	136 contacts →
	Exact match “PERC Engineering is a full-service engineering & project management firm in the oil & gas energy sector.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
21	Holloman Corporation	Exact match	Houston, TX, United StatesHQ recorded Oct 25, 2026	501-1,000	136 contacts →
	Exact match “Holloman Corporation is an Engineering, Procurement, and Construction company with capabilities to design, build, and service energy-related projects on a global level.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
22	E'kabel	Exact match	Houston, TX, United StatesHQ recorded Oct 25, 2026	51-200	104 contacts →
	Exact match “At E’kabel, we design and implement solutions that drive efficiency, sustainability, and performance across energy operations.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
23	RCI Energy Group	Exact match	Houston, TX, United StatesHQ recorded Oct 25, 2026	51-200	99 contacts →
	Exact match “RCI Energy Group provides a wide range of project support services to the energy industry.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
24	Prismecs	Exact match	Houston, TX, United StatesHQ recorded Oct 25, 2026	51-200	92 contacts →
	Exact match “Prismecs is the trusted partner for operators that expect more from their supply chain and engineered solutions.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase
25	C2o Americas	Exact match	Houston, United StatesHQ recorded Oct 25, 2026	201-500	80 contacts →
	Exact match “Supporting Global Energy and Infrastructure Projects, C2O Group provides electrical, communications and mechanical services.” Recorded in the RevenueBase company graph · Oct 25, 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 “energy systems 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 249 energy systems engineering services based in Houston, United States

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Energy systems engineering services based in Houston, United States at a glance

As of Oct 25, 2026

28.3%Verified-email coverage

149.6Average contacts per company

11-50Median size (employees)

Oct 25, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured across the whole United States list rather than for Houston, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 249 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 Houston, United States whose business descriptions match “energy systems 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 10,558 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 October 25, 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.

Energy systems engineering services by metro in the United States

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

How many energy systems engineering services are there based in Houston, United States?

RevenueBase identified 249 company matches for energy systems engineering services associated with Houston, United States as of October 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?

Mcdermott International, LTD tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most energy systems engineering services?

Houston leads the United States with 249 company records, followed by New York (120) and Austin (65).

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 10,558 professional contacts with verified work emails tracked across these 249 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 October 25, 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.