Company lists · Data refreshed September 2026

Top 25 Energy engineering consulting firms based in Houston, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 298 companies tracked

RevenueBase identified 298 company matches for energy engineering consulting firms associated with Houston, United States as of September 2026 and tracks 31,676 professional contacts across them, including 9,341 with verified work emails. Across the United States, Houston is the largest hub for this category.

This list covers company matches for energy engineering consulting firms 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 September 24, 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 Sep 24, 2026 How this list was built

298Companies

31,676Contacts tracked

9,341Verified emails

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The 25 largest energy engineering consulting firms based in Houston, United States

Ranked by team size

Top 25 of 298 company matches for energy engineering consulting firms based in Houston, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 24, 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 Sep 24, 2026	10001+	20,135 contacts →
	Exact match “McDermott is a premier provider of engineering and construction solutions to the energy industry.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
2	LJA	Exact match	Houston, TX, United StatesHQ recorded Sep 24, 2026	1,001-5,000	1,932 contacts →
	Exact match “Employee-Owned.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
3	Audubon Companies	Exact match	Houston, TX, United StatesHQ recorded Sep 24, 2026	1,001-5,000	1,488 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 · Sep 24, 2026 · View company records in RevenueBase
4	Gulf Companies	Exact match	Houston, TX, United StatesHQ recorded Sep 24, 2026	1,001-5,000	1,046 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 · Sep 24, 2026 · View company records in RevenueBase
5	Scmi INC	Exact match	Houston, TX, United StatesHQ recorded Sep 24, 2026	n/a	470 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
6	ARION	Exact match	Houston, TX, United StatesHQ recorded Sep 24, 2026	201-500	310 contacts →
	Exact match “We are A-Team of engineers specializing in the energy industry.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
7	DBR	Exact match	Houston, TX, United StatesHQ recorded Sep 24, 2026	201-500	227 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 · Sep 24, 2026 · View company records in RevenueBase
8	Zentech Incorporated	Exact match	Houston, TX, United StatesHQ recorded Sep 24, 2026	51-200	181 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 · Sep 24, 2026 · View company records in RevenueBase
9	Ceis Critical Energy Infrastructure Services	Exact match	Houston, TX, United StatesHQ recorded Sep 24, 2026	201-500	145 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 · Sep 24, 2026 · View company records in RevenueBase
10	Shah Smith & Associates, INC	Exact match	Houston, TX, United StatesHQ recorded Sep 24, 2026	51-200	134 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 · Sep 24, 2026 · View company records in RevenueBase
11	Holloman Corporation	Exact match	Houston, TX, United StatesHQ recorded Sep 24, 2026	501-1,000	125 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 · Sep 24, 2026 · View company records in RevenueBase
12	Perc Engineering	Exact match	Houston, TX, United StatesHQ recorded Sep 24, 2026	51-200	124 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 · Sep 24, 2026 · View company records in RevenueBase
13	S&b Infrastructure, LTD	Exact match	Houston, TX, United StatesHQ recorded Sep 24, 2026	51-200	97 contacts →
	Exact match “S&B Infrastructure, Ltd.(S & BI) has been in existence since 1994 as part of S&B Holdings, Ltd,(one of the largest privately-owned engineering firms in the State of Texas).” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
14	E'kabel	Exact match	Houston, TX, United StatesHQ recorded Sep 24, 2026	51-200	96 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 · Sep 24, 2026 · View company records in RevenueBase
15	Civitas Engineering Group, INC	Exact match	Houston, TX, United StatesHQ recorded Sep 24, 2026	51-200	65 contacts →
	Exact match “Civitas Engineering Group Inc.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
16	BD Energy Systems, LLC	Exact match	Houston, TX, United StatesHQ recorded Sep 24, 2026	51-200	65 contacts →
	Exact match “BD Energy Systems LLC located in Houston, TX, USA is a world leading engineering company operating in the Petrochemical, Fertilizer, Refining, and Gas Processing industry…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
17	RCP INC	Exact match	Houston, TX, United StatesHQ recorded Sep 24, 2026	51-200	63 contacts →
	Exact match “RCP is the regulatory compliance and risk management expert for pipelines, facilities, and terminal operations.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
18	Decon LLC	Exact match	Houston, TX, United StatesHQ recorded Sep 24, 2026	11-50	55 contacts →
	Exact match “MBE \| SBE \| DBE \| HUB \| HHF, TBPE Firm No 16156 DECON LLC,founded by Fulvio Jaramillo, a consulting engineering firm committed to technical excellence, DECON’s services help…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
19	MEP Green Design & Build, Pllc	Exact match	Houston, TX, United StatesHQ recorded Sep 24, 2026	51-200	53 contacts →
	Exact match “MEP Green Design & Build, PLLC,(MEPG) is a full-service engineering firm made up of a dedicated team of professionals offering expertise in Mechanical, Electrical, Plumbing and…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
20	Blackline Engineering, LLC	Exact match	Houston, TX, United StatesHQ recorded Sep 24, 2026	11-50	46 contacts →
	Exact match “Blackline Engineering, LLC is a Houston based engineering consulting firm that offers innovative design and project management services that are tailored for each client.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
21	I. A. Naman Associates, INC	Exact match	Houston, TX, United StatesHQ recorded Sep 24, 2026	11-50	46 contacts →
	Exact match “Since 1947, I.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
22	RPT Alliance LLC	Exact match	Houston, TX, United StatesHQ recorded Sep 24, 2026	11-50	43 contacts →
	Exact match “As of December 8, 2025, RTP Alliance has been acquired by by Bowman.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
23	TKE Engineering & Design	Exact match	Houston, TX, United StatesHQ recorded Sep 24, 2026	11-50	39 contacts →
	Exact match “Who We Are TKE was founded in Houston, Texas in 1992 by Terry Eleiott, PE and his wife Kathy Eleiott.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
24	Priserve Consulting INC	Exact match	Houston, TX, United StatesHQ recorded Sep 24, 2026	51-200	38 contacts →
	Exact match “PriServe Group company engaged in Technology and Engineering Services” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
25	Ch-Iv International	Exact match	Houston, TX, United StatesHQ recorded Sep 24, 2026	11-50	32 contacts →
	Exact match “As an extension of the Owner's team, we support Project Development and Asset Life Extensions through decades of experience and deep industry expertise.” Recorded in the RevenueBase company graph · Sep 24, 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 engineering consulting firms”. 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 298 energy engineering consulting firms based in Houston, United States

See the full list, filter by size, metro and specialty, and access 9,341 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Energy engineering consulting firms based in Houston, United States at a glance

As of Sep 24, 2026

29.5%Verified-email coverage

106.3Average contacts per company

11-50Median size (employees)

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

144

11-50

104

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 298 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 engineering consulting firms” 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 9,341 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 September 24, 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 engineering consulting firms 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 engineering consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many energy engineering consulting firms are there based in Houston, United States?

RevenueBase identified 298 company matches for energy engineering consulting firms associated with Houston, United States as of September 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 engineering consulting firms?

Houston leads the United States with 298 company records, followed by New York (190) and Austin (99).

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 9,341 professional contacts with verified work emails tracked across these 298 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 September 24, 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.