Company lists · Data refreshed September 2026
Top 25 Electrical consulting firms based in the United States
RevenueBase identified 10,861 electrical consulting firms headquartered in the United States as of September 2026 and tracks 169,356 professional contacts across them, including 62,691 with verified work emails and 67,514 with mobile numbers. Houston is the largest hub.
This list covers electrical consulting firms headquartered in the United States, 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.
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.
The 25 largest electrical consulting firms based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 4,156 contacts → | ||||
Indirect evidence “Sargent & Lundy is one of the world’s longest-standing full-service architect engineering firms.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 2,567 contacts → | ||||
Partial evidence “IES Holdings, Inc.(formerly known as Integrated Electrical Services, Inc.) provides electrical contracting services to commercial, industrial, and residential customers in the…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,865 contacts → | ||||
Indirect evidence “ENERCON is a multi-discipline engineering and environmental engineering support services firm focused on delivering safe and efficient solutions for the power, data center and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,661 contacts → | ||||
Indirect evidence “At Westwood, our purpose is to create a better world for people through our work.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,560 contacts → | ||||
Partial evidence “Helix Electric is an award-winning electrical contractor specializing in design-build and highly complex electrical projects throughout the United States.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,230 contacts → | ||||
Partial evidence “Outsource is the largest staffing firm in the nation specializing in the placement of low voltage and electrical talent.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 942 contacts → | ||||
Indirect evidence “Simpson Gumpertz & Heger (SGH) is a national engineering firm committed to delivering holistic advice for our clients’ most complex challenges.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 940 contacts → | ||||
Partial evidence “Dashiell is a leading national provider of technical services to the electric utility, power generation, industrial, renewable and energy industries.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 897 contacts → | ||||
Partial evidence “Mesa is a full service engineering, procurement, and construction management firm specializing in providing engineering services to electric utility, heavy industrial, and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 859 contacts → | ||||
Indirect evidence “The right team is more than an advantage.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 851 contacts → | ||||
Partial evidence “Willdan (NASDAQ: WLDN) provides professional consulting and technical services to utilities, public agencies and private industry throughout the United States.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 789 contacts → | ||||
Indirect evidence “FLANDERS, Leverage our legacy.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 782 contacts → | ||||
Indirect evidence “WELCOME TO OUR WEBSITE!” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 744 contacts → | ||||
Partial evidence “PAE provides mechanical and electrical engineering design, technology system design, energy modeling and analysis, and more.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 700 contacts → | ||||
Indirect evidence “EDG Inc.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 696 contacts → | ||||
Indirect evidence “ME Engineers has earned a reputation as a global leader in the design of innovative MEPT systems that bring to life the world's most innovative sports and entertainment venues.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 687 contacts → | ||||
Indirect evidence “Our story began in 1994 with a simple vision: Build a company that does things right.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 680 contacts → | ||||
Partial evidence “Baker Electric is a full-service electrical contractor and energy infrastructure expert headquartered in Escondido, California.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 670 contacts → | ||||
Indirect evidence “For over a quarter century, Prime has been successfully engineering, constructing building, and facilities solutions for our clientele.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 653 contacts → | ||||
Partial evidence “Electric Power Systems is an independent electrical testing & engineering organization.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 627 contacts → | ||||
Partial evidence “As one of the nation’s premier electrical contractors, we don’t just provide high-quality services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 621 contacts → | ||||
Indirect evidence “M.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 606 contacts → | ||||
Indirect evidence “PAR, a Quanta Services company, offers a full range of construction services for substations, overhead and underground distribution and transmission lines, engineering, design…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 597 contacts → | ||||
Partial evidence “Since 1923, Alterman has provided electrical construction on many of San Antonio and Austin's most impressive landmarks and contemporary structures.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 560 contacts → | ||||
Partial evidence “Founded in 1990, CSI has become a leader in highly technical and innovative electrical design and construction.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
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: electrical 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 electrical consulting firms.
- Partial evidence
- Its own public description names part of electrical consulting firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name electrical 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 10,861 electrical consulting firms based in the United States
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 62,691 reachable decision-makers.
Free signup · no credit card
Electrical consulting firms based in the United States at a glance
As of Sep 29, 2026Companies by employee count
Freshness & accuracy
How recently the business emails were verified and the company information checked
Email last verified
Median 32.0dCompany record updated
Median 92.0dHow 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 electrical 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.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “electrical 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 electrical 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 electrical consulting firms, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- 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, 62,691 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.
Electrical consulting firms by metro
- Electrical consulting firms in Houston200
- Electrical consulting firms in New York185
- Electrical consulting firms in Denver77
- Electrical consulting firms in Austin76
- Electrical consulting firms in Miami76
- Electrical consulting firms in Los Angeles68
- Electrical consulting firms in Phoenix68
- Electrical consulting firms in Chicago67
- Electrical consulting firms in San Diego67
- Electrical consulting firms in Dallas65
- Electrical consulting firms in San Antonio63
- Electrical consulting firms in Charlotte60
- Electrical consulting firms in Tampa58
- Electrical consulting firms in Atlanta57
- Electrical consulting firms in Orlando57
- Electrical consulting firms in Jacksonville56
- Electrical consulting firms in San Francisco52
- Electrical consulting firms in Las Vegas48
- Electrical consulting firms in Columbus46
- Electrical consulting firms in Nashville45
- Electrical consulting firms in Portland42
- Electrical consulting firms in Seattle41
- Electrical consulting firms in Sacramento39
- Electrical consulting firms in Raleigh36
- Electrical consulting firms in Kansas City35
- Electrical consulting firms in Pittsburgh35
- Electrical consulting firms in San Jose35
- Electrical consulting firms in Philadelphia33
- Electrical consulting firms in Cincinnati32
- Electrical consulting firms in Springfield32
- Electrical consulting firms in Albuquerque31
- Electrical consulting firms in Columbia31
- Electrical consulting firms in Indianapolis31
- Electrical consulting firms in Fort Worth30
- Electrical consulting firms in Rochester30
- Electrical consulting firms in Tulsa28
- Electrical consulting firms in Irvine27
- Electrical consulting firms in Louisville27
- Electrical consulting firms in Omaha27
- Electrical consulting firms in Richmond27
- Electrical consulting firms in West Palm Beach26
- Electrical consulting firms in Fort Lauderdale25
- Electrical consulting firms in Wichita25
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 electrical 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 electrical consulting firms are there based in the United States?
RevenueBase identified 10,861 electrical consulting firms headquartered in the United States 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?
Sargent & Lundy, headquartered in Casper, tops this list with the largest team on record.
Which city has the most electrical consulting firms?
Houston leads with 200 headquartered companies, followed by New York (185) and Denver (77).
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 62,691 verified decision-maker contacts tracked across these 10,861 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.
Ready to reach these companies? Verified emails and direct dials for all 10,861 electrical consulting firms based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Electrical consulting firms by geography
- Electrical consulting firms based in the United Kingdom
- Electrical consulting firms based in Brazil
- Electrical consulting firms based in Germany
- Electrical consulting firms based in France
- Electrical consulting firms based in Canada
- Electrical consulting firms based in Australia
- Electrical consulting firms based in Spain
- Electrical consulting firms based in the Netherlands
- Electrical consulting firms based in Switzerland
- Electrical consulting firms based in Sweden
- Electrical consulting firms based in Mexico
- Electrical consulting firms based in South Africa
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Electrical consulting firms based in the United Kingdom
- Electrical consulting firms based in Brazil
- Electrical consulting firms based in Germany
- Electrical consulting firms based in France
- Electrical consulting firms based in Canada
- Electrical consulting firms based in Australia