Company lists · Data refreshed October 2026

Top 25 Electric transmission manufacturers based in the United States

Name: Electric transmission manufacturers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 12, 2026 333 companies tracked

RevenueBase identified 333 company matches for electric transmission manufacturers associated with the United States as of October 2026 and tracks 28,757 professional contacts across them, including 9,867 with verified work emails. Houston is the largest hub.

This list covers company matches for electric transmission manufacturers 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 October 12, 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 Oct 12, 2026 How this list was built

333Companies

28,757Contacts tracked

9,867Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest electric transmission manufacturers based in the United States

Ranked by team size

Top 25 of 333 company matches for electric transmission manufacturers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 12, 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	Schweitzer Engineering Laboratories SEL	Exact match	Pullman, WA, United StatesHQ recorded Oct 12, 2026	5,001-10,000	6,798 contacts →
	Exact match “SEL is a globally recognized designer and manufacturer of products and solutions that make electric power safer, more reliable, and more economical.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
2	Powell	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	1,001-5,000	2,646 contacts →
	Exact match “Powell is hiring- Powell is dedicated to improving people’s lives by providing reliable power distribution systems in every market we serve.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
3	Industrial Electric Mfg. IEM	Exact match	Fremont, CA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,274 contacts →
	Exact match “Industrial Electric Mfg.(IEM) is the largest independent full-line manufacturer of electrical distribution equipment and integrated power systems in the U.S.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
4	Hubbell Power Systems	Exact match	Columbia, SC, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,114 contacts →
	Exact match “Hubbell Power Systems (HPS) designs and manufactures a wide variety of electric power transmission, distribution, substation, underground, OEM, and communications products used by…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5	Mitsubishi Electric Power Products, INC	Exact match	Warrendale, PA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	1,014 contacts →
	Exact match “Mitsubishi Electric Power Products, Inc.(MEPPI) is a leading U.S.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
6	Howard Industries	Exact match	Ellisville, MS, United StatesHQ recorded Oct 12, 2026	1,001-5,000	981 contacts →
	Exact match “Howard Industries is the leading manufacturer of liquid-filled distribution transformers for the utility and commercial/industrial markets.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
7	SAE Towers	Exact match	Houston, TX, United StatesHQ recorded Oct 12, 2026	1,001-5,000	973 contacts →
	Exact match “SAE Towers is one of the world’s largest producers of steel lattice towers for high-voltage power transmission.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8	Maclean Power Systems	Exact match	Fort Mill, SC, United StatesHQ recorded Oct 12, 2026	1,001-5,000	937 contacts →
	Exact match “MacLean Power Systems (MPS), headquartered in Fort Mill, SC, is LEADING THE WAY™ in delivering innovative, reliable, and resilient solutions for the electric utility…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
9	Electrical Consultants, INC	Exact match	Billings, MT, United StatesHQ recorded Oct 12, 2026	1,001-5,000	904 contacts →
	Exact match “Electrical Consultants, Inc.(ECI) is an employee-owned, national provider of high voltage transmission, substation, and distribution solutions.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
10	Ermco-Eci	Exact match	Dyersburg, TN, United StatesHQ recorded Oct 12, 2026	1,001-5,000	593 contacts →
	Exact match “ERMCO (Electric Research and Manufacturing Cooperative, Inc.) is headquartered in Dyersburg, Tennessee.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11	Irby Construction Company	Exact match	Richland, MS, United StatesHQ recorded Oct 12, 2026	501-1,000	560 contacts →
	Exact match “Irby Construction Company, a wholly owned subsidiary of Quanta Services, Inc, excels in the processes required for major transmission, substation and distribution line…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12	CTC Global	Exact match	Irvine, CA, United StatesHQ recorded Oct 12, 2026	201-500	307 contacts →
	Exact match “Founded in 2003, CTC Global is the industry leader in composite core technology, specializing in providing innovative power grid solutions for utility companies.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
13	Maddox Industrial Transformer	Exact match	Greer, SC, United StatesHQ recorded Oct 12, 2026	201-500	306 contacts →
	Exact match “Maddox serves the commercial, industrial, utility, and renewables segments of the transformer market.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
14	Asplundh Engineering Services	Exact match	Willow Grove, PA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	300 contacts →
	Exact match “Asplundh Engineering Services leverages more than 100 years of experience to provide a superior, single-point solution for engineering, design and testing services to…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
15	Milbank Energy At Work	Exact match	Kansas City, MO, United StatesHQ recorded Oct 12, 2026	501-1,000	274 contacts →
	Exact match “Milbank provides the tools that empower life.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
16	Systems Control	Exact match	Iron Mountain, MI, United StatesHQ recorded Oct 12, 2026	501-1,000	242 contacts →
	Exact match “Systems Control, a Hubbell brand, designs and manufactures turnkey control systems and control relays that are involved in the protection and control of transmission and…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17	Electro-Mechanical	Exact match	Bristol, VA, United StatesHQ recorded Oct 12, 2026	501-1,000	197 contacts →
	Exact match “Electro-Mechanical, LLC is a global leader in developing and manufacturing technologies used for electrical power distribution switching, power quality and power protection…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
18	Pennsylvania Transformer Technology LLC PTT	Exact match	Canonsburg, PA, United StatesHQ recorded Oct 12, 2026	201-500	190 contacts →
	Exact match “Pennsylvania Transformer Technology LLC (PTT) is a US-owned, industry leading manufacturer of a wide range of sizes and types of power transformers for the investor-owned…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
19	Brink Constructors, INC	Exact match	Rapid City, SD, United StatesHQ recorded Oct 12, 2026	501-1,000	188 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
20	The Durham Company	Exact match	Lebanon, MO, United StatesHQ recorded Oct 12, 2026	501-1,000	186 contacts →
	Exact match “The Durham Company specializes in the Design, Manufacturing, and Sales of products in the Electrical Utility Marketplace.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
21	Power Partners	Exact match	Athens, GA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	172 contacts →
	Exact match “Power Partners is a leading manufacturer of distribution transformers in North America.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
22	Solomon Corporation	Exact match	Solomon, KS, United StatesHQ recorded Oct 12, 2026	501-1,000	163 contacts →
	Exact match “Solomon Corporation buys, sells, repairs, recycles, and disposes of transformers, regulators and reclosers.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
23	Beta Engineering	Exact match	Pineville, LA, United StatesHQ recorded Oct 12, 2026	51-200	160 contacts →
	Exact match “You needed that substation yesterday.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
24	Hico America	Exact match	Pittsburgh, PA, United StatesHQ recorded Oct 12, 2026	1,001-5,000	155 contacts →
	Exact match “HICO America is the North American headquarters for the HICO family of companies, delivering the infrastructure behind today's most ambitious energy projects.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
25	Southwest Electric CO	Exact match	Oklahoma City, OK, United StatesHQ recorded Oct 12, 2026	201-500	151 contacts →
	Exact match “In 2025, Southwest Electric Co.” Recorded in the RevenueBase company graph · Oct 12, 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 “electric transmission manufacturers”. 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 333 electric transmission manufacturers based in the United States

See the full list, filter by size, metro and specialty, and access 9,867 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Electric transmission manufacturers based in the United States at a glance

As of Oct 12, 2026

34.3%Verified-email coverage

86.4Average contacts per company

11-50Median size (employees)

5.4%Largest-city concentration · Houston

Oct 12, 2026Page data refreshed

Companies by employee count

1-10

11-50

107

51-200

201-500

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 333 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 “electric transmission manufacturers” 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 9,867 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 October 12, 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 “electric transmission manufacturers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many electric transmission manufacturers are there based in the United States?

RevenueBase identified 333 company matches for electric transmission manufacturers associated with the United States as of October 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?

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

Which city has the most electric transmission manufacturers?

Houston leads with 18 company records, followed by Bristol (5) and Cincinnati (4).

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 9,867 professional contacts with verified work emails tracked across these 333 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 October 12, 2026.

Ready to reach these companies? Verified emails and direct dials for all 333 electric transmission manufacturers based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Electric transmission manufacturers by geography

Browse the directory

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.