Company lists · Data refreshed September 2026

Top 25 Electrical distribution inspection services based in the United States

RevenueBase identified 4,653 electrical distribution inspection services headquartered in the United States as of September 2026 and tracks 59,065 professional contacts across them, including 18,314 with verified work emails. Houston is the largest hub.

This list covers electrical distribution inspection services 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 16, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review
4,653Companies
59,065Contacts tracked
18,314Verified emails
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The 25 largest electrical distribution inspection services based in the United States

Ranked by team size
Top 25 of 4,653 electrical distribution inspection services based in the United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to electrical distribution inspection services: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceHouston, TX, United StatesHQ checked Sep 16, 20265,001-10,0002,567 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 16, 2026
2Partial evidenceIrving, TX, United StatesHQ checked Sep 16, 20261,001-5,0001,221 contacts →

Partial evidence

“Shermco Industries is a provider of safe, reliable testing, repair, professional training, electrical outage planning, maintenance and analysis of rotating apparatus and…”

Source: RevenueBase Database · checked Sep 16, 2026
3Indirect evidenceEvansville, IN, United StatesHQ checked Sep 16, 2026501-1,000789 contacts →

Indirect evidence

“FLANDERS, Leverage our legacy.”

Source: RevenueBase Database · checked Sep 16, 2026
4Indirect evidenceLong Beach, CA, United StatesHQ checked Sep 16, 2026n/a782 contacts →

Indirect evidence

“WELCOME TO OUR WEBSITE!”

Source: RevenueBase Database · checked Sep 16, 2026
5Partial evidenceMaryland Heights, MO, United StatesHQ checked Sep 16, 2026501-1,000653 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 16, 2026
6Partial evidenceLogan, UT, United StatesHQ checked Sep 16, 20261,001-5,000627 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 16, 2026
7Partial evidenceMarlborough, MA, United StatesHQ checked Sep 16, 2026501-1,000619 contacts →

Partial evidence

“Doble is the world’s most trusted brand in electrical diagnostics.”

Source: RevenueBase Database · checked Sep 16, 2026
8Partial evidenceKansas City, MO, United StatesHQ checked Sep 16, 20261,001-5,000606 contacts →

Partial 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 16, 2026
9Partial evidenceLive Oak, TX, United StatesHQ checked Sep 16, 2026501-1,000597 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 16, 2026
10Partial evidenceChicago, IL, United StatesHQ checked Sep 16, 20261,001-5,000594 contacts →

Partial evidence

“Meade leads the field in design, construction and maintenance of electric, natural gas, and telecommunications delivery systems, both above and below ground and has done so for…”

Source: RevenueBase Database · checked Sep 16, 2026
11Partial evidenceHouston, TX, United StatesHQ checked Sep 16, 2026501-1,000544 contacts →

Partial evidence

“Wholesale Electric Supply Company of Houston, Inc.”

Source: RevenueBase Database · checked Sep 16, 2026
12Indirect evidenceHouston, TX, United StatesHQ checked Sep 16, 20261,001-5,000511 contacts →

Indirect evidence

“RESA Power is your ONE-STOP for all of your power needs.”

Source: RevenueBase Database · checked Sep 16, 2026
13Partial evidenceFairport, NY, United StatesHQ checked Sep 16, 2026501-1,000494 contacts →

Partial evidence

“Qualitrol is a global leader in electrical grid monitoring solutions for businesses that manage, operate, or support the power grid.”

Source: RevenueBase Database · checked Sep 16, 2026
14Indirect evidencePortland, OR, United StatesHQ checked Sep 16, 20261,001-5,000490 contacts →

Indirect evidence

“Our lives function on a power grid.”

Source: RevenueBase Database · checked Sep 16, 2026
15Partial evidenceValdosta, GA, United StatesHQ checked Sep 16, 20261,001-5,000455 contacts →

Partial evidence

“Ace Electric is a family-owned/operated electrical contractor performing safe and high-quality work for clients throughout the United States.”

Source: RevenueBase Database · checked Sep 16, 2026
16Partial evidenceLong Island City, NY, United StatesHQ checked Sep 16, 20261,001-5,000444 contacts →

Partial evidence

“The E-J Group is active in all facets of electrical contracting, bringing experience, expertise, and a national reputation to projects that range in size up to more than $1…”

Source: RevenueBase Database · checked Sep 16, 2026
17Indirect evidenceCarrollton, TX, United StatesHQ checked Sep 16, 20261,001-5,000426 contacts →

Indirect evidence

“Concentric is the first national industrial power services organization delivering forklift and critical power as well as maintenance solutions that ensure uninterrupted…”

Source: RevenueBase Database · checked Sep 16, 2026
18Partial evidenceHouston, TX, United StatesHQ checked Sep 16, 20261,001-5,000423 contacts →

Partial evidence

“As a division of one of America's largest construction companies (Tutor Perini Corporation), Fisk Electric Company provides the highest standards of electrical construction…”

Source: RevenueBase Database · checked Sep 16, 2026
19Partial evidenceSaint Louis, MO, United StatesHQ checked Sep 16, 2026501-1,000419 contacts →

Partial evidence

“A full-service electrical contractor since 1902, providing capability, performance, and legendary innovation in new construction, design-build, low-voltage systems, energy…”

Source: RevenueBase Database · checked Sep 16, 2026
20Partial evidenceSanford, FL, United StatesHQ checked Sep 16, 20261,001-5,000391 contacts →

Partial evidence

“Strada Services is a full service electrical, security, and air conditioning contracting company servicing residential, commercial, and industrial customers in Florida and in the…”

Source: RevenueBase Database · checked Sep 16, 2026
21Indirect evidenceSumner, WA, United StatesHQ checked Sep 16, 20261,001-5,000374 contacts →

Indirect evidence

“Potelco Inc is an utilities company based out of Sumner, Washington, United States.”

Source: RevenueBase Database · checked Sep 16, 2026
22Indirect evidenceTomball, TX, United StatesHQ checked Sep 16, 20265,001-10,000356 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 16, 2026
23Indirect evidenceSanta Ana, CA, United StatesHQ checked Sep 16, 2026501-1,000355 contacts →

Indirect evidence

“Our Growth With locations spanning from Northern California to San Diego, Reno to Las Vegas and a full fleet of drivers, we can help expand your reach into new markets.”

Source: RevenueBase Database · checked Sep 16, 2026
24Partial evidenceSan Antonio, TX, United StatesHQ checked Sep 16, 20261,001-5,000320 contacts →

Partial evidence

“Since our founding in 1966, Big State Electric Ltd.”

Source: RevenueBase Database · checked Sep 16, 2026
25Partial evidenceWaco, TX, United StatesHQ checked Sep 16, 20261,001-5,000308 contacts →

Partial evidence

“Residential and Commercial Services Since 1994, the professional electricians at Mr.”

Source: RevenueBase Database · checked Sep 16, 2026

Showing 25 of 4,653 electrical distribution inspection services based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 18,314 reachable decision-makers.

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Electrical distribution inspection services based in the United States at a glance

As of Sep 16, 2026
31.0%Verified-email coverage
12.7Average contacts per company
1-10Median size (employees)
2.0%Largest-city concentration · Houston
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
2,373
11-50
1,554
51-200
504
201-500
103
501-1,000
39
1,001-5,000
30
5,001-10,000
2
10001+
1

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 4,653 companies.

How 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 distribution inspection services, 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 distribution inspection services”. 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 distribution inspection services), 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 distribution inspection services, 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, 18,314 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 16, 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 distribution inspection services by metro

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 distribution inspection services, 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 distribution inspection services are there based in the United States?

RevenueBase identified 4,653 electrical distribution inspection services 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?

IES Holdings, headquartered in Houston, tops this list with the largest team on record.

Which city has the most electrical distribution inspection services?

Houston leads with 95 headquartered companies, followed by New York (41) and Miami (37).

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 18,314 verified decision-maker contacts tracked across these 4,653 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 16, 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 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.