Company lists · Data refreshed November 2026

Top 25 Electrical systems maintenance companies based in the United States

Name: Electrical systems maintenance companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 5,711 companies tracked

RevenueBase identified 5,711 company matches for electrical systems maintenance companies associated with the United States as of November 2026 and tracks 76,070 professional contacts across them, including 23,540 with verified work emails. Houston is the largest hub.

This list covers company matches for electrical systems maintenance companies 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 6, 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 6, 2026 How this list was built

5,711Companies

76,070Contacts tracked

23,540Verified emails

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The 25 largest electrical systems maintenance companies based in the United States

Ranked by team size

Top 25 of 5,711 company matches for electrical systems maintenance companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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	IES Holdings	Exact match	Houston, TX, United StatesHQ recorded Nov 6, 2026	5,001-10,000	2,710 contacts →
	Exact match “IES Holdings, Inc.(formerly known as Integrated Electrical Services, Inc.) provides electrical contracting services to commercial, industrial, and residential customers in the…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Shermco Industries	Exact match	Irving, OK, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,324 contacts →
	Exact match “Shermco Industries is a provider of safe, reliable testing, repair, professional training, electrical outage planning, maintenance and analysis of rotating apparatus and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Elec-Tech Electrical Contractors	Exact match	Long Beach, CA, United StatesHQ recorded Nov 6, 2026	n/a	787 contacts →
	Exact match “WELCOME TO OUR WEBSITE!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Electric Power Systems	Exact match	Maryland Heights, MI, United StatesHQ recorded Nov 6, 2026	501-1,000	678 contacts →
	Exact match “Electric Power Systems is an independent electrical testing & engineering organization.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Alterman, INC	Exact match	Live Oak, TX, United StatesHQ recorded Nov 6, 2026	501-1,000	632 contacts →
	Exact match “Since 1923, Alterman has provided electrical construction on many of San Antonio and Austin's most impressive landmarks and contemporary structures.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	CSI Electrical Contractors, INC	Exact match	Santa Fe Springs, CA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	595 contacts →
	Exact match “Founded in 1990, CSI has become a leader in highly technical and innovative electrical design and construction.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Colonialwebb	Exact match	Richmond, VA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	595 contacts →
	Exact match “ColonialWebb is built on a simple belief: when people feel like they belong and have a purpose, they can achieve almost anything.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Resa Power	Exact match	Houston, CA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	590 contacts →
	Exact match “RESA Power is your ONE-STOP for all of your power needs.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Hunt Electric	Exact match	Eagan, MN, United StatesHQ recorded Nov 6, 2026	1,001-5,000	572 contacts →
	Exact match “Hunt Electric is a national electrical design, build, and maintenance firm based in Eagan, MN.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	EC Electric	Exact match	Portland, OR, United StatesHQ recorded Nov 6, 2026	1,001-5,000	541 contacts →
	Exact match “Our lives function on a power grid.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Pieper Electric, INC	Exact match	New Berlin, WI, United StatesHQ recorded Nov 6, 2026	501-1,000	526 contacts →
	Exact match “At Pieper Electric, Inc,"Our People Are Our Power" isn't just a phrase; it's our way of life.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	E-J Electric Installation CO	Exact match	Long Island City, NY, United StatesHQ recorded Nov 6, 2026	1,001-5,000	495 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	ACE Electric, INC	Exact match	Valdosta, GA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	494 contacts →
	Exact match “Ace Electric is a family-owned/operated electrical contractor performing safe and high-quality work for clients throughout the United States.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Inglett & Stubbs	Exact match	Mableton, GA, United StatesHQ recorded Nov 6, 2026	501-1,000	483 contacts →
	Exact match “Inglett & Stubbs LLC is a recognized leader in the electrical construction industry today.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Cochran	Exact match	Seattle, OR, United StatesHQ recorded Nov 6, 2026	501-1,000	454 contacts →
	Exact match “For more than 70 years Cochran has been powering the Pacific Northwest.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Guarantee Electrical Company	Exact match	St. Louis, MO, United StatesHQ recorded Nov 6, 2026	501-1,000	453 contacts →
	Exact match “A full-service electrical contractor since 1902, providing capability, performance, and legendary innovation in new construction, design-build, low-voltage systems, energy…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Concentric Power Services	Exact match	Carrollton, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	429 contacts →
	Exact match “Concentric is the first national industrial power services organization delivering forklift and critical power as well as maintenance solutions that ensure uninterrupted…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Strada Services	Exact match	Sanford, FL, United StatesHQ recorded Nov 6, 2026	1,001-5,000	415 contacts →
	Exact match “Strada Services is a full service electrical, security, and air conditioning contracting company servicing residential, commercial, and industrial customers in Florida and in the…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	DP Electric INC	Exact match	Tempe, AZ, United StatesHQ recorded Nov 6, 2026	1,001-5,000	401 contacts →
	Exact match “DP Electric (DPE) has a long history as a dedicated trade partner.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Hunt Electric, LLC	Exact match	Salt Lake City, UT, United StatesHQ recorded Nov 6, 2026	501-1,000	372 contacts →
	Exact match “Hunt Electric is an industry-leading electrical contractor serving commercial, industrial, mission critical, mining, infrastructure, and numerous other sectors.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Marathon Electrical Contractors	Exact match	Irondale, AL, United StatesHQ recorded Nov 6, 2026	501-1,000	360 contacts →
	Exact match “Marathon Electrical Contractors has been in business since 1987 and is a full service electrical contracting company.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	BIG State Electric, LTD	Exact match	San Antonio, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	355 contacts →
	Exact match “Since our founding in 1966, Big State Electric Ltd.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	RMS Energy Co, LLC	Exact match	Little Falls, MD, United StatesHQ recorded Nov 6, 2026	1,001-5,000	348 contacts →
	Exact match “RMS Energy leads the industry by energizing the future through reliable power solutions, offering comprehensive installation and maintenance services on 480V to 765kV electrical…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Mr. Electric	Exact match	Waco, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	339 contacts →
	Exact match “Residential and Commercial Services Since 1994, the professional electricians at Mr.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Ermco, INC	Exact match	Greenwood, IN, United StatesHQ recorded Nov 6, 2026	201-500	320 contacts →
	Exact match “From our beginning in 1962 as a small electrical maintenance company in downtown Indianapolis with a staff of three, ERMCO, Inc.” Recorded in the RevenueBase company graph · Nov 6, 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 “electrical systems maintenance companies”. 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 5,711 electrical systems maintenance companies based in the United States

See the full list, filter by size, metro and specialty, and access 23,540 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Electrical systems maintenance companies based in the United States at a glance

As of Nov 6, 2026

30.9%Verified-email coverage

13.3Average contacts per company

11-50Median size (employees)

1.6%Largest-city concentration · Houston

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

2,655

11-50

2,060

51-200

729

201-500

132

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 5,711 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 “electrical systems maintenance companies” 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 23,540 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 6, 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.

Electrical systems maintenance companies by metro

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 “electrical systems maintenance companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many electrical systems maintenance companies are there based in the United States?

RevenueBase identified 5,711 company matches for electrical systems maintenance companies 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?

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

Which city has the most electrical systems maintenance companies?

Houston leads with 94 company records, followed by New York (67) and Miami (36).

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 23,540 professional contacts with verified work emails tracked across these 5,711 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 6, 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.