Company lists · Data refreshed September 2026

Top 25 Power systems integrators based in the United States

RevenueBase identified 2,108 company matches for power systems integrators associated with the United States as of September 2026 and tracks 109,326 professional contacts across them, including 43,287 with verified work emails. Houston is the largest hub.

This list covers company matches for power systems integrators 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 September 29, 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 Sep 29, 2026 How this list was built
2,108Companies
109,326Contacts tracked
43,287Verified emails
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The 25 largest power systems integrators based in the United States

Ranked by team size
Top 25 of 2,108 company matches for power systems integrators based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 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 matchPullman, WA, United StatesHQ recorded Sep 29, 20265,001-10,0006,489 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 · Sep 29, 2026 · View company records in RevenueBase
2Exact matchIrvine, CA, United StatesHQ recorded Sep 29, 2026n/a5,984 contacts →

Exact match

“For 150 years, Toshiba has been engineering solutions that drive progress, empower industries, and create a more resilient future.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3Exact matchShelton, CT, United StatesHQ recorded Sep 29, 202610001+4,053 contacts →

Exact match

“Hubbell Incorporated is a leading manufacturer of utility and electrical solutions that help build more reliable, resilient, and renewable energy infrastructure.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4Exact matchAtlanta, GA, United StatesHQ recorded Sep 29, 202610001+3,700 contacts →

Exact match

“GE Vernova is a planned, purpose-built global energy company that includes Power, Wind, and Electrification businesses and is supported by its accelerator businesses of Advanced…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5Exact matchLisle, IL, United StatesHQ recorded Sep 29, 20261,001-5,0002,966 contacts →

Exact match

“ENTRUST Solutions Group, an ENR Top 100 company, provides comprehensive and dependable engineering, consulting, and automation services to pipeline companies, gas and electric…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6Exact matchTysons, VA, United StatesHQ recorded Sep 29, 20265,001-10,0002,761 contacts →

Exact match

“M.C.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7Exact matchMenasha, WI, United StatesHQ recorded Sep 29, 20261,001-5,0002,741 contacts →

Exact match

“Faith Technologies Incorporated (FTI) is a dynamic organization comprised of construction, engineering, manufacturing and renewable energy experts.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8Exact matchHouston, TX, United StatesHQ recorded Sep 29, 20261,001-5,0002,561 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 · Sep 29, 2026 · View company records in RevenueBase
9Exact matchKennesaw, GA, United StatesHQ recorded Sep 29, 20261,001-5,0001,865 contacts →

Exact match

“ENERCON is a multi-discipline engineering and environmental engineering support services firm focused on delivering safe and efficient solutions for the power, data center and…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10Exact matchLake Mary, FL, United StatesHQ recorded Sep 29, 20261,001-5,0001,859 contacts →

Exact match

“Mitsubishi Power Americas is creating a future that works for people and the planet through innovative power generation technology and solutions.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11Exact matchSan Diego, CA, United StatesHQ recorded Sep 29, 20261,001-5,0001,560 contacts →

Exact match

“Helix Electric is an award-winning electrical contractor specializing in design-build and highly complex electrical projects throughout the United States.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12Exact matchHouston, TX, United StatesHQ recorded Sep 29, 2026201-5001,183 contacts →

Exact match

“Who We Are Englobal Founded in 1985, ENGlobal (NASDAQ: ENG) is a specialty engineering services firm that focuses on automation solutions and select EPCM projects for the energy…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13Exact matchAurora, OH, United StatesHQ recorded Sep 29, 20261,001-5,0001,159 contacts →

Exact match

“As one of the world's largest independent systems integrators, RoviSys delivers comprehensive automation, digital transformation, manufacturing execution (MES), Industrial AI…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14Exact matchFremont, CA, United StatesHQ recorded Sep 29, 20261,001-5,000969 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 · Sep 29, 2026 · View company records in RevenueBase
15Exact matchWarrendale, PA, United StatesHQ recorded Sep 29, 20261,001-5,000967 contacts →

Exact match

“Mitsubishi Electric Power Products, Inc.(MEPPI) is a leading U.S.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16Exact matchHouston, TX, United StatesHQ recorded Sep 29, 20261,001-5,000940 contacts →

Exact match

“Dashiell is a leading national provider of technical services to the electric utility, power generation, industrial, renewable and energy industries.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17Exact matchSioux Center, IA, United StatesHQ recorded Sep 29, 20261,001-5,000938 contacts →

Exact match

“As a Partner Interstates is your trusted partner for electrical, automation, and operational technology needs.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18Exact matchHouston, TX, United StatesHQ recorded Sep 29, 20261,001-5,000923 contacts →

Exact match

“TMEIC Corporation, headquartered in Houston, Texas, designs, develops and engineers advanced automation systems, large AC and DC motors, photovoltaic inverters and variable…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19Exact matchBillings, MT, United StatesHQ recorded Sep 29, 20261,001-5,000890 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 · Sep 29, 2026 · View company records in RevenueBase
20Exact matchLewisville, TX, United StatesHQ recorded Sep 29, 20261,001-5,000857 contacts →

Exact match

“Prime Controls was established as a Main Automation Contractor to provide customers a sole source solution for Industrial Automation services and products.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21Exact matchMadison Heights, MI, United StatesHQ recorded Sep 29, 2026501-1,000819 contacts →

Exact match

“McNaughton-McKay is exceeding customer expectations during every interaction and transaction.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22Exact matchEvansville, IN, United StatesHQ recorded Sep 29, 2026501-1,000789 contacts →

Exact match

“FLANDERS, Leverage our legacy.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23Exact matchPortage, MI, United StatesHQ recorded Sep 29, 2026501-1,000751 contacts →

Exact match

“Your Possibility.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24Exact matchAustin, TX, United StatesHQ recorded Sep 29, 2026501-1,000630 contacts →

Exact match

“Electric Power Engineers (EPE) is a global advisory and engineering firm advancing grid reliability, resilience, flexibility, and affordability.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25Exact matchEden Prairie, MN, United StatesHQ recorded Sep 29, 2026501-1,000623 contacts →

Exact match

“Wunderlich-Malec Engineering is a nationally recognized, 100% employee-owned leader in advanced engineering and control system solutions.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase

Showing 25 of 2,108 power systems integrators based in the United States

See the full list, filter by size, metro and specialty, and access 43,287 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Power systems integrators based in the United States at a glance

As of Sep 29, 2026
39.6%Verified-email coverage
51.9Average contacts per company
11-50Median size (employees)
4.6%Largest-city concentration · Houston
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
747
11-50
738
51-200
375
201-500
120
501-1,000
51
1,001-5,000
63
5,001-10,000
4
10001+
8

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 2,108 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 “power systems integrators” 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 43,287 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 September 29, 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.

Power systems integrators by metro

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 “power systems integrators”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many power systems integrators are there based in the United States?

RevenueBase identified 2,108 company matches for power systems integrators associated with the United States as of September 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 power systems integrators?

Houston leads with 96 company records, followed by Los Angeles (19) and Austin (17).

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 43,287 professional contacts with verified work emails tracked across these 2,108 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 September 29, 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 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.