Company lists · Data refreshed November 2026
Top 25 Transformer testing laboratories based in the United States
RevenueBase identified 186 company matches for transformer testing laboratories associated with the United States as of November 2026 and tracks 5,425 professional contacts across them, including 2,330 with verified work emails. Houston is the largest hub.
This list covers company matches for transformer 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.
The 25 largest transformer testing laboratories based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 | |||||
| 2 | 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 | |||||
| 3 | 662 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 | |||||
| 4 | 219 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 | |||||
| 5 | 158 contacts → | ||||
Exact match “In 2025, Southwest Electric Co.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 154 contacts → | ||||
Exact match “At JST Power Equipment, we pride ourselves on delivering world-class transformer and electrical equipment solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 131 contacts → | ||||
Exact match “MGM Transformers is now part of Forgent Power Solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 108 contacts → | ||||
Exact match “DIT-MCO International's proven automated product testing solutions for wired assemblies provide reliable service to industrial, commercial, and military customers.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 64 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 | |||||
| 10 | 63 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 | |||||
| 11 | 53 contacts → | ||||
Exact match “75 Years of Engineering Excellence in the Delivered Worldwide Olsun Electrics is the industry’s most trusted partner for custom dry-type transformers.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 50 contacts → | ||||
Exact match “PES is an independent testing laboratory, specializing in mechanical, metallurgical, chemical and nondestructive testing and analysis.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 49 contacts → | ||||
Exact match “We rent and support electrical testing equipment.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 48 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 | |||||
| 15 | 45 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 41 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 | |||||
| 17 | 41 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 | |||||
| 18 | 39 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 | |||||
| 19 | 39 contacts → | ||||
Exact match “The talented Field engineers at HIVOLT Advanced provide electrical testing and commissioning services in a safe and reliable manner.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 39 contacts → | ||||
Exact match “ComRent's mission is to enable real world testing of critical power systems, by providing clients with: The Right equipment that is Always Ready, and Reliable to ensure accurate…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 36 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 | |||||
| 22 | 35 contacts → | ||||
Exact match “ITEC, a MacLean Power Systems (MPS) company, specializes in the design and manufacture of dry and oil-filled transformers, ensuring the safety and reliability of electrical…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 34 contacts → | ||||
Exact match “AEA is the premier value-added innovator in the electrical power distribution industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 33 contacts → | ||||
Exact match “Sunbelt Transformer is one of the world’s largest providers of new and reconditioned transformers and electrical equipment for commercial and industrial markets worldwide.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 32 contacts → | ||||
Exact match “Excelling with experience dating back to the 1970's, while continuously adopting the latest technology.” 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 “transformer testing laboratories”. 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 186 transformer testing laboratories based in the United States
See the full list, filter by size, metro and specialty, and access 2,330 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Transformer testing laboratories based in the United States at a glance
As of Nov 6, 2026Companies by employee count
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 186 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 “transformer 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 2,330 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 “transformer testing laboratories”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many transformer testing laboratories are there based in the United States?
RevenueBase identified 186 company matches for transformer 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?
Shermco Industries tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most transformer testing laboratories?
Houston leads with 6 company records, followed by Phoenix (4) and Los Angeles (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 2,330 professional contacts with verified work emails tracked across these 186 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 186 transformer testing laboratories based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Transformer testing laboratories by geography
- Transformer testing laboratories based in Brazil
- Transformer testing laboratories based in Canada
- Transformer testing laboratories based in Chile
- Transformer testing laboratories based in Colombia
- Transformer testing laboratories based in Germany
- Transformer testing laboratories based in India
- Transformer testing laboratories based in Italy
- Transformer testing laboratories based in Türkiye
- Transformer testing laboratories based in the United Kingdom
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.
More company lists
- All company lists
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- Lists A-Z
- New lists
- Transformer testing laboratories based in Brazil
- Transformer testing laboratories based in Canada
- Transformer testing laboratories based in Chile
- Transformer testing laboratories based in Colombia
- Transformer testing laboratories based in Germany
- Transformer testing laboratories based in India
Company intelligence · public preview
Top 25 transformer testing laboratories based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 186 matching company records for transformer testing laboratories based in the United States, with 5,425 tracked contacts and 2,330 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 transformer testing laboratories based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Shermco Industriesshermco.comHQ: Irving, OK, United StatesReported employees: 1,001-5,000 | Irving, OK, United States | 1,001-5,000 | Exact match | 1,324 contacts → |
“Shermco Industries is a provider of safe, reliable testing, repair, professional training, electrical outage planning, maintenance and analysis of rotating apparatus and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Electric Power Systemsvoltyx.comHQ: Maryland Heights, MI, United StatesReported employees: 501-1,000 | Maryland Heights, MI, United States | 501-1,000 | Exact match | 678 contacts → |
“Electric Power Systems is an independent electrical testing & engineering organization.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Doble Engineeringdoble.comHQ: Marlborough, MA, United StatesReported employees: 501-1,000 | Marlborough, MA, United States | 501-1,000 | Exact match | 662 contacts → |
“Doble is the world’s most trusted brand in electrical diagnostics.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Sdmyerssdmyers.comHQ: Tallmadge, OH, United StatesReported employees: 201-500 | Tallmadge, OH, United States | 201-500 | Exact match | 219 contacts → |
“SDMyers is the industry leader in transformer and substation maintenance and electric power system reliability.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Southwest Electric COswelectric.comHQ: Oklahoma City, TN, United StatesReported employees: 201-500 | Oklahoma City, TN, United States | 201-500 | Exact match | 158 contacts → |
“In 2025, Southwest Electric Co.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  JST Power Equipmentjstpower.comHQ: Lake Mary, FL, United StatesReported employees: 201-500 | Lake Mary, FL, United States | 201-500 | Exact match | 154 contacts → |
“At JST Power Equipment, we pride ourselves on delivering world-class transformer and electrical equipment solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  MGM Transformersmgmtransformer.comHQ: Vernon, CA, United StatesReported employees: 201-500 | Vernon, CA, United States | 201-500 | Exact match | 131 contacts → |
“MGM Transformers is now part of Forgent Power Solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Dit-Mco Internationalditmco.comHQ: Kansas City, MO, United StatesReported employees: 51-200 | Kansas City, MO, United States | 51-200 | Exact match | 108 contacts → |
“DIT-MCO International's proven automated product testing solutions for wired assemblies provide reliable service to industrial, commercial, and military customers.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Power Engineering Services, LLCpe-svcs.comHQ: Converse, TX, United StatesReported employees: 51-200 | Converse, TX, United States | 51-200 | Exact match | 64 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  ABM Electrical Power Solutions, LLCabmpowersolution.abm.comHQ: Lanham, MD, United StatesReported employees: 201-500 | Lanham, MD, United States | 201-500 | Exact match | 63 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Olsun Electrics Corporationolsun.comHQ: Richmond, IL, United StatesReported employees: 51-200 | Richmond, IL, United States | 51-200 | Exact match | 53 contacts → |
“75 Years of Engineering Excellence in the Delivered Worldwide Olsun Electrics is the industry’s most trusted partner for custom dry-type transformers.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Product Evaluation Systems, LLCpes-testing.comHQ: Latrobe, PA, United StatesReported employees: 51-200 | Latrobe, PA, United States | 51-200 | Exact match | 50 contacts → |
“PES is an independent testing laboratory, specializing in mechanical, metallurgical, chemical and nondestructive testing and analysis.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Intellirentintellirentco.comHQ: Roanoke, TX, United StatesReported employees: 51-200 | Roanoke, TX, United States | 51-200 | Exact match | 49 contacts → |
“We rent and support electrical testing equipment.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Hipotronics, INChubbell.comHQ: Reading, PA, United StatesReported employees: 11-50 | Reading, PA, United States | 11-50 | Exact match | 48 contacts → |
“Hipotronics is the world's leading supplier of high electrical test equipment and measurement instruments.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Mchale & Associates, INCmchale.comHQ: Redmond, TN, United StatesReported employees: 51-200 | Redmond, TN, United States | 51-200 | Exact match | 45 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 16 |  Phenix Technologies, A Doble Companyphenixtech.comHQ: Accident, MD, United StatesReported employees: 51-200 | Accident, MD, United States | 51-200 | Exact match | 41 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  EPS Technologyeps-technology.comHQ: Durham, CT, United StatesReported employees: 51-200 | Durham, CT, United States | 51-200 | Exact match | 41 contacts → |
“EPST is a NETA Certified, Independent Electrical Testing & Engineering Organization.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Titan Utility Servicestitanutility.netHQ: Tickfaw, LA, United StatesReported employees: 51-200 | Tickfaw, LA, United States | 51-200 | Exact match | 39 contacts → |
“At Titan we are dedicated to keeping linemen safe through quality work and excellent customer service.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Hivolt Advancedhivoltadvanced.comHQ: Indianapolis, IN, United StatesReported employees: 51-200 | Indianapolis, IN, United States | 51-200 | Exact match | 39 contacts → |
“The talented Field engineers at HIVOLT Advanced provide electrical testing and commissioning services in a safe and reliable manner.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Comrent Load Bank Solutionscomrent.comHQ: Broomfield, CO, United StatesReported employees: 51-200 | Broomfield, CO, United States | 51-200 | Exact match | 39 contacts → |
“ComRent's mission is to enable real world testing of critical power systems, by providing clients with: The Right equipment that is Always Ready, and Reliable to ensure accurate…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Tidal Power Services, LLCtidalpowerservices.comHQ: Rosharon, TX, United StatesReported employees: 51-200 | Rosharon, TX, United States | 51-200 | Exact match | 36 contacts → |
“Tidal Power Services specializes in delivering expert solutions and analysis for all your electrical testing, maintenance, and engineering needs.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | HQ: Monroe, NC, United StatesReported employees: 51-200 | Monroe, NC, United States | 51-200 | Exact match | 35 contacts → |
“ITEC, a MacLean Power Systems (MPS) company, specializes in the design and manufacture of dry and oil-filled transformers, ensuring the safety and reliability of electrical…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Arizona Electrical Apparatus, INCaeacircuitbreakers.comHQ: Tucson, AZ, United StatesReported employees: 51-200 | Tucson, AZ, United States | 51-200 | Exact match | 34 contacts → |
“AEA is the premier value-added innovator in the electrical power distribution industry.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Sunbelt Transformersunbeltusa.comHQ: Temple, CO, United StatesReported employees: 51-200 | Temple, CO, United States | 51-200 | Exact match | 33 contacts → |
“Sunbelt Transformer is one of the world’s largest providers of new and reconditioned transformers and electrical equipment for commercial and industrial markets worldwide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  OTC Services INCotcservices.comHQ: Louisville, OH, United StatesReported employees: 51-200 | Louisville, OH, United States | 51-200 | Exact match | 32 contacts → |
“Excelling with experience dating back to the 1970's, while continuously adopting the latest technology.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 186 company matches
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Transformer testing laboratories: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
186 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 186 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for transformer testing laboratories?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many transformer testing laboratories did RevenueBase find based in the United States?
The saved snapshot records 186 matching company records, 5,425 tracked contacts and 2,330 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Transformer testing laboratories by geography
- Transformer testing laboratories based in Brazil
- Transformer testing laboratories based in Canada
- Transformer testing laboratories based in Chile
- Transformer testing laboratories based in Colombia
- Transformer testing laboratories based in Germany
- Transformer testing laboratories based in India
- Transformer testing laboratories based in Italy
- Transformer testing laboratories based in Türkiye
- Transformer testing laboratories based in the United Kingdom
Cite this list
RevenueBase Data Team. Top 25 transformer testing laboratories based in the United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/transformer-testing-laboratories/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Transformer testing laboratories based in Brazil
- Transformer testing laboratories based in Canada
- Transformer testing laboratories based in Chile
- Transformer testing laboratories based in Colombia
- Transformer testing laboratories based in Germany
- Transformer testing laboratories based in India
Company intelligence · public preview
Top 25 transformer testing laboratories based in the United States
RevenueBase records 186 matching company records for transformer testing laboratories based in the United States, with 5,425 tracked contacts and 2,330 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 transformer testing laboratories based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Shermco Industriesshermco.com HQ: Irving, OK, United StatesReported employees: 1,001-5,000 | Irving, OK, United States | 1,001-5,000 | Exact match | 1,324 contacts → |
“Shermco Industries is a provider of safe, reliable testing, repair, professional training, electrical outage planning, maintenance and analysis of rotating apparatus and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Electric Power Systemsvoltyx.com HQ: Maryland Heights, MI, United StatesReported employees: 501-1,000 | Maryland Heights, MI, United States | 501-1,000 | Exact match | 678 contacts → |
“Electric Power Systems is an independent electrical testing & engineering organization.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Doble Engineeringdoble.com HQ: Marlborough, MA, United StatesReported employees: 501-1,000 | Marlborough, MA, United States | 501-1,000 | Exact match | 662 contacts → |
“Doble is the world’s most trusted brand in electrical diagnostics.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Sdmyerssdmyers.com HQ: Tallmadge, OH, United StatesReported employees: 201-500 | Tallmadge, OH, United States | 201-500 | Exact match | 219 contacts → |
“SDMyers is the industry leader in transformer and substation maintenance and electric power system reliability.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Southwest Electric COswelectric.com HQ: Oklahoma City, TN, United StatesReported employees: 201-500 | Oklahoma City, TN, United States | 201-500 | Exact match | 158 contacts → |
“In 2025, Southwest Electric Co.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | JST Power Equipmentjstpower.com HQ: Lake Mary, FL, United StatesReported employees: 201-500 | Lake Mary, FL, United States | 201-500 | Exact match | 154 contacts → |
“At JST Power Equipment, we pride ourselves on delivering world-class transformer and electrical equipment solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | MGM Transformersmgmtransformer.com HQ: Vernon, CA, United StatesReported employees: 201-500 | Vernon, CA, United States | 201-500 | Exact match | 131 contacts → |
“MGM Transformers is now part of Forgent Power Solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Dit-Mco Internationalditmco.com HQ: Kansas City, MO, United StatesReported employees: 51-200 | Kansas City, MO, United States | 51-200 | Exact match | 108 contacts → |
“DIT-MCO International's proven automated product testing solutions for wired assemblies provide reliable service to industrial, commercial, and military customers.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Power Engineering Services, LLCpe-svcs.com HQ: Converse, TX, United StatesReported employees: 51-200 | Converse, TX, United States | 51-200 | Exact match | 64 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | ABM Electrical Power Solutions, LLCabmpowersolution.abm.com HQ: Lanham, MD, United StatesReported employees: 201-500 | Lanham, MD, United States | 201-500 | Exact match | 63 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Olsun Electrics Corporationolsun.com HQ: Richmond, IL, United StatesReported employees: 51-200 | Richmond, IL, United States | 51-200 | Exact match | 53 contacts → |
“75 Years of Engineering Excellence in the Delivered Worldwide Olsun Electrics is the industry’s most trusted partner for custom dry-type transformers.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Product Evaluation Systems, LLCpes-testing.com HQ: Latrobe, PA, United StatesReported employees: 51-200 | Latrobe, PA, United States | 51-200 | Exact match | 50 contacts → |
“PES is an independent testing laboratory, specializing in mechanical, metallurgical, chemical and nondestructive testing and analysis.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Intellirentintellirentco.com HQ: Roanoke, TX, United StatesReported employees: 51-200 | Roanoke, TX, United States | 51-200 | Exact match | 49 contacts → |
“We rent and support electrical testing equipment.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Hipotronics, INChubbell.com HQ: Reading, PA, United StatesReported employees: 11-50 | Reading, PA, United States | 11-50 | Exact match | 48 contacts → |
“Hipotronics is the world's leading supplier of high electrical test equipment and measurement instruments.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Mchale & Associates, INCmchale.com HQ: Redmond, TN, United StatesReported employees: 51-200 | Redmond, TN, United States | 51-200 | Exact match | 45 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 16 | Phenix Technologies, A Doble Companyphenixtech.com HQ: Accident, MD, United StatesReported employees: 51-200 | Accident, MD, United States | 51-200 | Exact match | 41 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | EPS Technologyeps-technology.com HQ: Durham, CT, United StatesReported employees: 51-200 | Durham, CT, United States | 51-200 | Exact match | 41 contacts → |
“EPST is a NETA Certified, Independent Electrical Testing & Engineering Organization.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Titan Utility Servicestitanutility.net HQ: Tickfaw, LA, United StatesReported employees: 51-200 | Tickfaw, LA, United States | 51-200 | Exact match | 39 contacts → |
“At Titan we are dedicated to keeping linemen safe through quality work and excellent customer service.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Hivolt Advancedhivoltadvanced.com HQ: Indianapolis, IN, United StatesReported employees: 51-200 | Indianapolis, IN, United States | 51-200 | Exact match | 39 contacts → |
“The talented Field engineers at HIVOLT Advanced provide electrical testing and commissioning services in a safe and reliable manner.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Comrent Load Bank Solutionscomrent.com HQ: Broomfield, CO, United StatesReported employees: 51-200 | Broomfield, CO, United States | 51-200 | Exact match | 39 contacts → |
“ComRent's mission is to enable real world testing of critical power systems, by providing clients with: The Right equipment that is Always Ready, and Reliable to ensure accurate…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Tidal Power Services, LLCtidalpowerservices.com HQ: Rosharon, TX, United StatesReported employees: 51-200 | Rosharon, TX, United States | 51-200 | Exact match | 36 contacts → |
“Tidal Power Services specializes in delivering expert solutions and analysis for all your electrical testing, maintenance, and engineering needs.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | HQ: Monroe, NC, United StatesReported employees: 51-200 | Monroe, NC, United States | 51-200 | Exact match | 35 contacts → |
“ITEC, a MacLean Power Systems (MPS) company, specializes in the design and manufacture of dry and oil-filled transformers, ensuring the safety and reliability of electrical…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Arizona Electrical Apparatus, INCaeacircuitbreakers.com HQ: Tucson, AZ, United StatesReported employees: 51-200 | Tucson, AZ, United States | 51-200 | Exact match | 34 contacts → |
“AEA is the premier value-added innovator in the electrical power distribution industry.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Sunbelt Transformersunbeltusa.com HQ: Temple, CO, United StatesReported employees: 51-200 | Temple, CO, United States | 51-200 | Exact match | 33 contacts → |
“Sunbelt Transformer is one of the world’s largest providers of new and reconditioned transformers and electrical equipment for commercial and industrial markets worldwide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | OTC Services INCotcservices.com HQ: Louisville, OH, United StatesReported employees: 51-200 | Louisville, OH, United States | 51-200 | Exact match | 32 contacts → |
“Excelling with experience dating back to the 1970's, while continuously adopting the latest technology.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 186 company matches
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Transformer testing laboratories: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
186 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 186 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for transformer testing laboratories?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many transformer testing laboratories did RevenueBase find based in the United States?
The saved snapshot records 186 matching company records, 5,425 tracked contacts and 2,330 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Transformer testing laboratories by geography
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- Transformer testing laboratories based in Germany
- Transformer testing laboratories based in India
- Transformer testing laboratories based in Italy
- Transformer testing laboratories based in Türkiye
- Transformer testing laboratories based in the United Kingdom
Cite this list
RevenueBase Data Team. Top 25 transformer testing laboratories based in the United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/transformer-testing-laboratories/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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- Transformer testing laboratories based in India