Company lists · Data refreshed November 2026

Top 25 Voltage support service providers based in the United States

RevenueBase identified 310 company matches for voltage support service providers associated with the United States as of November 2026 and tracks 6,891 professional contacts across them, including 3,323 with verified work emails. Houston is the largest hub.

This list covers company matches for voltage support service providers 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
310Companies
6,891Contacts tracked
3,323Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest voltage support service providers based in the United States

Ranked by team size
Top 25 of 310 company matches for voltage support service providers 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchIrving, OK, United StatesHQ recorded Nov 6, 20261,001-5,0001,324 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
2Exact matchHouston, CA, United StatesHQ recorded Nov 6, 20261,001-5,000590 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
3Exact matchPortland, OR, United StatesHQ recorded Nov 6, 20261,001-5,000541 contacts →

Exact match

“Our lives function on a power grid.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchCarrollton, TX, United StatesHQ recorded Nov 6, 20261,001-5,000429 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
5Exact matchLittle Falls, MD, United StatesHQ recorded Nov 6, 20261,001-5,000348 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
6Exact matchKnoxville, KY, United StatesHQ recorded Nov 6, 2026501-1,000236 contacts →

Exact match

“Since 1950, BESCO has met the electrical needs of our Knoxville, Tennessee community within the healthcare, industrial, commercial, higher education, federal, nuclear, low voltage…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchTallmadge, OH, United StatesHQ recorded Nov 6, 2026201-500219 contacts →

Exact match

“SDMyers is the industry leader in transformer and substation maintenance and electric power system reliability.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchChesapeake, VA, United StatesHQ recorded Nov 6, 2026201-500141 contacts →

Exact match

“Established in 1960, Electric Motor and Contracting remains one of the largest independently owned electric motor and pump repair shops in the U.S.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchPlano, TX, United StatesHQ recorded Nov 6, 202651-200106 contacts →

Exact match

“Vector Power is a quality driven service company specializing in low, medium, and high voltage electrical infrastructure, headquartered in Frisco, Texas.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchHolbrook, MA, United StatesHQ recorded Nov 6, 2026n/a95 contacts →

Exact match

“Specialists in Electrical Power Systems - Testing, Commissioning, Maintenance.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchSeattle, OR, United StatesHQ recorded Nov 6, 202651-20074 contacts →

Exact match

“Vision: To be the Global Power Protection Expert Mission: Deliver exceptional testing, maintenance, engineering, and commissioning services with uncompromising quality, safety…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchBaton Rouge, LA, United StatesHQ recorded Nov 6, 202651-20065 contacts →

Exact match

“We service, maintain, repair, and upgrade all manufacturers' electrical equipment, including switchgear, circuit breakers, transformers, and starters.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchConverse, TX, United StatesHQ recorded Nov 6, 202651-20064 contacts →

Exact match

“WELCOME Power Engineering Services is an Accredited, Full-Member of the International Electrical Testing Association (NETA), and a Registered Engineering Firm in 46 states.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchLanham, MD, United StatesHQ recorded Nov 6, 2026201-50063 contacts →

Exact match

“ABM Electrical Power Solutions, LLC is an electrical power engineering, testing, and maintenance company based out of 4390 Parliament Pl, Lanham, Maryland, United States.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchBrooklyn, United StatesHQ recorded Nov 6, 2026501-1,00057 contacts →

Exact match

“From our humble beginnings in 2002 as a one-man electrical shop, Horsepower Electric has grown into one of the tri-state region’s largest and most established electrical…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchWest Chester, OH, United StatesHQ recorded Nov 6, 202651-20046 contacts →

Exact match

“ZAVTEK is one of the nation's largest privately held critical power service organizations providing preventive maintenance, 24/7 emergency service, consulting and uninterruptible…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchCharlotte, NC, United StatesHQ recorded Nov 6, 202611-5040 contacts →

Exact match

“A&W Electric is driven to provide growth opportunities for our associates and to create value for our clients in the industrial, commercial, and utility sectors.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchClovis, CA, United StatesHQ recorded Nov 6, 202611-5037 contacts →

Exact match

“AllumiaX, LLC is a Seattle based company with a vision to be a global leader in Industrial & commercial power systems engineering, consulting, and field-services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchTucson, AZ, United StatesHQ recorded Nov 6, 202651-20037 contacts →

Exact match

“Switchgear Solutions, An IPS Company offers a wide variety of field, shop and engineering services for power distribution and control equipment, including manufacturing new…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchCrown Point, IN, United StatesHQ recorded Nov 6, 202651-20036 contacts →

Exact match

“Crown ERAM, LLC is a self motivated power distribution service organization with experienced breaker and motor technicians, engineers, and administration staff that are available…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchEaston, PA, United StatesHQ recorded Nov 6, 202651-20035 contacts →

Exact match

“Metrotek designs, constructs, tests and maintains the electrical infrastructure that powers America’s economy.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchBerryville, VA, United StatesHQ recorded Nov 6, 202651-20035 contacts →

Exact match

“Our Mission is to build trust and comfort with every customer.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchDecatur, AL, United StatesHQ recorded Nov 6, 202611-5032 contacts →

Exact match

“AMP Quality Energy Services performs acceptance and maintenance tests on electrical power apparatus.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchGlendale, United StatesHQ recorded Nov 6, 202611-5031 contacts →

Exact match

“RDS Electric provides electrical services to residential, commercial and industrial customers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchMadison Heights, MI, United StatesHQ recorded Nov 6, 202651-20028 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 310 voltage support service providers based in the United States

See the full list, filter by size, metro and specialty, and access 3,323 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Voltage support service providers based in the United States at a glance

As of Nov 6, 2026
48.2%Verified-email coverage
22.2Average contacts per company
11-50Median size (employees)
4.2%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
132
11-50
124
51-200
40
201-500
6
501-1,000
2
1,001-5,000
5

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 310 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 “voltage support service providers” 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 3,323 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.

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 “voltage support service providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many voltage support service providers are there based in the United States?

RevenueBase identified 310 company matches for voltage support service providers 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?

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

Which city has the most voltage support service providers?

Houston leads with 13 company records, followed by Los Angeles (4) and Birmingham (3).

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 3,323 professional contacts with verified work emails tracked across these 310 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.

Ready to reach these companies? Verified emails and direct dials for all 310 voltage support service providers based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

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.