Company lists · Data refreshed November 2026

Top 25 High voltage testing laboratories based in the United States

RevenueBase identified 86 company matches for high voltage testing laboratories associated with the United States as of November 2026 and tracks 1,842 professional contacts across them, including 766 with verified work emails. Phoenix is the largest hub.

This list covers company matches for high voltage testing laboratories 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
86Companies
1,842Contacts tracked
766Verified emails
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The 25 largest high voltage testing laboratories based in the United States

Ranked by team size
Top 25 of 86 company matches for high voltage testing laboratories 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 matchMarlborough, MA, United StatesHQ recorded Nov 6, 2026501-1,000662 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchMontclair, AZ, United StatesHQ recorded Nov 6, 2026201-500104 contacts →

Exact match

“With over 60 years of high voltage experience, we are a leader and safety expert in this space.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact 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
4Exact 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
5Exact matchReading, PA, United StatesHQ recorded Nov 6, 202611-5048 contacts →

Exact match

“Hipotronics is the world's leading supplier of high electrical test equipment and measurement instruments.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchAccident, MD, United StatesHQ recorded Nov 6, 202651-20041 contacts →

Exact match

“PHENIX Technologies Inc, A Division of Doble Engineering, designs and manufactures a wide range of High Voltage, High Current, and High Power Test Systems and Components.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchDurham, CT, United StatesHQ recorded Nov 6, 202651-20041 contacts →

Exact match

“EPST is a NETA Certified, Independent Electrical Testing & Engineering Organization.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchTickfaw, LA, United StatesHQ recorded Nov 6, 202651-20039 contacts →

Exact match

“At Titan we are dedicated to keeping linemen safe through quality work and excellent customer service.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchRosharon, TX, United StatesHQ recorded Nov 6, 202651-20036 contacts →

Exact match

“Tidal Power Services specializes in delivering expert solutions and analysis for all your electrical testing, maintenance, and engineering needs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact 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
11Exact matchSanta Clara, CA, United StatesHQ recorded Nov 6, 202611-5031 contacts →

Exact match

“For over 30 years, we have supported the product testing requirements of the nation's computer, fiber optics, telecommunications, medical, food, aerospace/defense, and other…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchManassas, VA, United StatesHQ recorded Nov 6, 202611-5027 contacts →

Exact match

“HV TECHNOLOGIES, Inc.(HVT) is a prominent supplier of High Voltage and EMC Test Equipment and solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchEbensburg, PA, United StatesHQ recorded Nov 6, 202651-20021 contacts →

Exact match

“CAMCO is an independent testing and repair facility.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchSan Jose, CA, United StatesHQ recorded Nov 6, 202611-5021 contacts →

Exact match

“PMDT is the global power industry's most capable and advanced resource for On-Line Partial Discharge Test Equipment and testing services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchCopake, NY, United StatesHQ recorded Nov 6, 202611-5018 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchLos Angeles, CA, United StatesHQ recorded Nov 6, 202611-5016 contacts →

Exact match

“Electrical testing of Electrical Components”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchBeaverton, OR, United StatesHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“Mobile Power Solutions (MPS) specializes in battery and electric double-layer capacitor safety and performance testing.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchBurlington, CA, United StatesHQ recorded Nov 6, 202651-20012 contacts →

Exact match

“Your safety is our concern.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchLake Forest, IL, United StatesHQ recorded Nov 6, 202651-20012 contacts →

Exact match

“For over 80 years Associated Research has shaped the electrical safety compliance industry with our innovative test and measurement solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchPelham, United StatesHQ recorded Nov 6, 20261-1011 contacts →

Exact match

“Telco Sales Inc.® assists and protects communication technicians.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchClinton, CT, United StatesHQ recorded Nov 6, 202611-5010 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchSan Diego, CA, United StatesHQ recorded Nov 6, 202611-509 contacts →

Exact match

“Originally founded as a product safety consulting firm in 1983, Compliance West USA, Inc.is a leading provider and manufacturer of state-of-the-art Hipot and Ground Continuity…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchGolden, CO, United StatesHQ recorded Nov 6, 20261-109 contacts →

Exact match

“Nikka Densok USA specializes in High Voltage Leak Detection (HVLD) for Glass Vials, IV Bags, Pre-Filled Syringes, BFS containers and other pharmaceutical and food packages.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchRancho Cordova, CA, United StatesHQ recorded Nov 6, 202611-508 contacts →

Exact match

“Polarity was founded in to meet the growing demand for innovative and reliable high voltage power systems and solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchBlythewood, SC, United StatesHQ recorded Nov 6, 202611-508 contacts →

Exact match

Recorded description not available.

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

Showing 25 of 86 high voltage testing laboratories based in the United States

See the full list, filter by size, metro and specialty, and access 766 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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High voltage testing laboratories based in the United States at a glance

As of Nov 6, 2026
41.6%Verified-email coverage
21.4Average contacts per company
11-50Median size (employees)
3.5%Largest-city concentration · Phoenix
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
33
11-50
34
51-200
16
201-500
2
501-1,000
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 86 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 “high voltage testing laboratories” 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 766 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 “high voltage testing laboratories”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many high voltage testing laboratories are there based in the United States?

RevenueBase identified 86 company matches for high voltage testing laboratories 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?

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

Which city has the most high voltage testing laboratories?

Phoenix leads with 3 company records, followed by Blaine (2) and Copake (2).

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 766 professional contacts with verified work emails tracked across these 86 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 86 high voltage testing laboratories based in the United States. Start with a free account, no credit card.

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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.