Company lists · Data refreshed September 2026

Top 25 Substation automation companies based in the United States

Name: Substation automation companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 18, 2026 363 companies tracked

RevenueBase identified 363 substation automation companies headquartered in the United States as of September 2026 and tracks 31,954 professional contacts across them, including 12,639 with verified work emails. Houston is the largest hub.

This list covers substation automation companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 18, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 18, 2026 86% judged on-target in blind review

363Companies

31,954Contacts tracked

12,639Verified emails

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The 25 largest substation automation companies based in the United States

Ranked by team size

Top 25 of 363 substation automation companies based in the United States, ranked by team size, largest first. Data refreshed Sep 18, 2026. RevenueBase Smart Search rates how each company's information relates to substation automation companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Schweitzer Engineering Laboratories SEL	Indirect evidence	Pullman, WA, United StatesHQ checked Sep 18, 2026	5,001-10,000	6,489 contacts →
	Indirect evidence “SEL is a globally recognized designer and manufacturer of products and solutions that make electric power safer, more reliable, and more economical.” Source: RevenueBase Database · checked Sep 18, 2026
2	Hubbell Incorporated	Indirect evidence	Shelton, CT, United StatesHQ checked Sep 18, 2026	10001+	4,053 contacts →
	Indirect evidence “Hubbell Incorporated is a leading manufacturer of utility and electrical solutions that help build more reliable, resilient, and renewable energy infrastructure.” Source: RevenueBase Database · checked Sep 18, 2026
3	Entrust Solutions Group	Partial evidence	Lisle, IL, United StatesHQ checked Sep 18, 2026	1,001-5,000	2,966 contacts →
	Partial evidence “ENTRUST Solutions Group, an ENR Top 100 company, provides comprehensive and dependable engineering, consulting, and automation services to pipeline companies, gas and electric…” Source: RevenueBase Database · checked Sep 18, 2026
4	Powell	Indirect evidence	Houston, TX, United StatesHQ checked Sep 18, 2026	1,001-5,000	2,561 contacts →
	Indirect evidence “Powell is hiring- Powell is dedicated to improving people’s lives by providing reliable power distribution systems in every market we serve.” Source: RevenueBase Database · checked Sep 18, 2026
5	Hubbell Power Systems	Partial evidence	Columbia, SC, United StatesHQ checked Sep 18, 2026	1,001-5,000	1,079 contacts →
	Partial evidence “Hubbell Power Systems (HPS) designs and manufactures a wide variety of electric power transmission, distribution, substation, underground, OEM, and communications products used by…” Source: RevenueBase Database · checked Sep 18, 2026
6	Industrial Electric Mfg. IEM	Indirect evidence	Fremont, CA, United StatesHQ checked Sep 18, 2026	1,001-5,000	969 contacts →
	Indirect evidence “Industrial Electric Mfg.(IEM) is the largest independent full-line manufacturer of electrical distribution equipment and integrated power systems in the U.S.” Source: RevenueBase Database · checked Sep 18, 2026
7	Mitsubishi Electric Power Products, INC	Indirect evidence	Warrendale, PA, United StatesHQ checked Sep 18, 2026	1,001-5,000	967 contacts →
	Indirect evidence “Mitsubishi Electric Power Products, Inc.(MEPPI) is a leading U.S.” Source: RevenueBase Database · checked Sep 18, 2026
8	Electrical Consultants, INC	Partial evidence	Billings, MT, United StatesHQ checked Sep 18, 2026	1,001-5,000	890 contacts →
	Partial evidence “Electrical Consultants, Inc.(ECI) is an employee-owned, national provider of high voltage transmission, substation, and distribution solutions.” Source: RevenueBase Database · checked Sep 18, 2026
9	Flanders	Indirect evidence	Evansville, IN, United StatesHQ checked Sep 18, 2026	501-1,000	789 contacts →
	Indirect evidence “FLANDERS, Leverage our legacy.” Source: RevenueBase Database · checked Sep 18, 2026
10	Nvent Hoffman	Indirect evidence	Anoka, MN, United StatesHQ checked Sep 18, 2026	10001+	627 contacts →
	Indirect evidence “nVent HOFFMAN leading designer and manufacturer of systems that safely and reliably protect the electronic controls and mission critical electrical systems in industrial, data…” Source: RevenueBase Database · checked Sep 18, 2026
11	Resa Power	Indirect evidence	Houston, TX, United StatesHQ checked Sep 18, 2026	1,001-5,000	511 contacts →
	Indirect evidence “RESA Power is your ONE-STOP for all of your power needs.” Source: RevenueBase Database · checked Sep 18, 2026
12	EC Electric	Indirect evidence	Portland, OR, United StatesHQ checked Sep 18, 2026	1,001-5,000	490 contacts →
	Indirect evidence “Our lives function on a power grid.” Source: RevenueBase Database · checked Sep 18, 2026
13	Ermco, INC	Indirect evidence	Greenwood, IN, United StatesHQ checked Sep 18, 2026	201-500	304 contacts →
	Indirect evidence “From our beginning in 1962 as a small electrical maintenance company in downtown Indianapolis with a staff of three, ERMCO, Inc.” Source: RevenueBase Database · checked Sep 18, 2026
14	Crown Technical Systems	Indirect evidence	Fontana, CA, United StatesHQ checked Sep 18, 2026	201-500	241 contacts →
	Indirect evidence “Crown Technical Systems, a Flex company, is headquartered in Fontana, California, with additional production and engineering facilities in Dallas, Texas, and Ontario, Canada.” Source: RevenueBase Database · checked Sep 18, 2026
15	Systems Control	Indirect evidence	Iron Mountain, MI, United StatesHQ checked Sep 18, 2026	501-1,000	240 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 18, 2026
16	Electro-Mechanical	Indirect evidence	Bristol, VA, United StatesHQ checked Sep 18, 2026	501-1,000	221 contacts →
	Indirect evidence “Electro-Mechanical, LLC is a global leader in developing and manufacturing technologies used for electrical power distribution switching, power quality and power protection…” Source: RevenueBase Database · checked Sep 18, 2026
17	Intermountain Electronics	Indirect evidence	Price, UT, United StatesHQ checked Sep 18, 2026	501-1,000	208 contacts →
	Indirect evidence “IE provides custom-engineered, packaged equipment to industrial markets.” Source: RevenueBase Database · checked Sep 18, 2026
18	Maverick Power	Indirect evidence	Mckinney, TX, United StatesHQ checked Sep 18, 2026	201-500	205 contacts →
	Indirect evidence “At Maverick Power, we are revolutionizing power solutions for businesses with a strong commitment to innovation, efficiency, and reliability.” Source: RevenueBase Database · checked Sep 18, 2026
19	RFL A Hubbell Power Systems, Inc. Brand USA	Indirect evidence	Boonton, NJ, United StatesHQ checked Sep 18, 2026	51-200	202 contacts →
	Indirect evidence “RFL is a Hubbell Power Systems brand that provides power line communication equipment and protection solutions, relaying products, application support, and customized systems.” Source: RevenueBase Database · checked Sep 18, 2026
20	Aubrey Silvey Enterprises, INC	Indirect evidence	Carrollton, GA, United StatesHQ checked Sep 18, 2026	201-500	192 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 18, 2026
21	Expanse Electrical CO	Partial evidence	Houston, TX, United StatesHQ checked Sep 18, 2026	501-1,000	188 contacts →
	Partial evidence “Expanse Electrical Company is a premier provider of integrated electrical infrastructure, instrumentation and automation system solutions.” Source: RevenueBase Database · checked Sep 18, 2026
22	SAI Advanced Power Solutions, INC	Indirect evidence	Franklin Park, IL, United StatesHQ checked Sep 18, 2026	501-1,000	165 contacts →
	Indirect evidence “For over 100 years, SAI (Switchboard Apparatus, Inc.) has supplied innovative and reliable equipment for electrical power distribution.” Source: RevenueBase Database · checked Sep 18, 2026
23	Novatech Automation	Partial evidence	Lenexa, KS, United StatesHQ checked Sep 18, 2026	51-200	153 contacts →
	Partial evidence “NovaTech Automation produces the easiest to use and best supported automation products and solutions for electric utilities.” Source: RevenueBase Database · checked Sep 18, 2026
24	Beta Engineering	Partial evidence	Pineville, LA, United StatesHQ checked Sep 18, 2026	51-200	150 contacts →
	Partial evidence “You needed that substation yesterday.” Source: RevenueBase Database · checked Sep 18, 2026
25	Cleaveland Price INC	Indirect evidence	Trafford, PA, United StatesHQ checked Sep 18, 2026	201-500	145 contacts →
	Indirect evidence “Cleaveland/Price is a engineering/manufacturing firm serving the needs of the electric power industry.” Source: RevenueBase Database · checked Sep 18, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: substation automation companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names substation automation companies.
Partial evidence: Its own public description names part of substation automation companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name substation automation companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 363 substation automation companies based in the United States

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Substation automation companies based in the United States at a glance

As of Sep 18, 2026

39.6%Verified-email coverage

88.0Average contacts per company

11-50Median size (employees)

6.1%Largest-city concentration · Houston

Sep 18, 2026Page data refreshed

Companies by employee count

1-10

119

11-50

123

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 363 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among substation automation companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “substation automation companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names substation automation companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among substation automation companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 12,639 across the full list. 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 September 18, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names substation automation companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many substation automation companies are there based in the United States?

RevenueBase identified 363 substation automation companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Schweitzer Engineering Laboratories SEL, headquartered in Pullman, tops this list with the largest team on record.

Which city has the most substation automation companies?

Houston leads with 22 headquartered companies, followed by Bristol (5) and San Antonio (5).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 12,639 verified decision-maker contacts tracked across these 363 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 18, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, 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.