Company lists · Data refreshed September 2026

Top 25 Grid infrastructure companies based in the United States

Name: Grid infrastructure 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 19, 2026 1,626 companies tracked

RevenueBase identified 1,626 grid infrastructure companies headquartered in the United States as of September 2026 and tracks 117,477 professional contacts across them, including 45,786 with verified work emails. Houston is the largest hub.

This list covers grid infrastructure 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 19, 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 19, 2026 86% judged on-target in blind review

1,626Companies

117,477Contacts tracked

45,786Verified emails

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The 25 largest grid infrastructure companies based in the United States

Ranked by team size

Top 25 of 1,626 grid infrastructure companies based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to grid infrastructure 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	Firstenergy	Indirect evidence	Akron, OH, United StatesHQ checked Sep 19, 2026	10001+	6,434 contacts →
	Indirect evidence “We are a forward-thinking electric utility centered on integrity, powered by a diverse team of employees committed to making customers’ lives brighter, the environment better and…” Source: RevenueBase Database · checked Sep 19, 2026
2	Nextera Energy Resources	Partial evidence	Juno Beach, FL, United StatesHQ checked Sep 19, 2026	10001+	6,221 contacts →
	Partial evidence “NextEra Energy Resources, LLC, together with its affiliated entities,("NextEra Energy Resources") is one of the largest energy infrastructure companies in North America.” Source: RevenueBase Database · checked Sep 19, 2026
3	Primoris Services Corporation	Partial evidence	Dallas, TX, United StatesHQ checked Sep 19, 2026	10001+	4,089 contacts →
	Partial evidence “Primoris Services Corporation (NYSE: PRIM) is a leading provider of critical infrastructure services to the utility, energy, and renewables markets throughout the United States…” Source: RevenueBase Database · checked Sep 19, 2026
4	Hubbell Incorporated	Partial evidence	Shelton, CT, United StatesHQ checked Sep 19, 2026	10001+	4,053 contacts →
	Partial 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 19, 2026
5	Mastec Communications Group	Indirect evidence	Coral Gables, FL, United StatesHQ checked Sep 19, 2026	5,001-10,000	3,207 contacts →
	Indirect evidence “MasTec Communications Group (MCG) is a division of MasTec that provides comprehensive services and turnkey solutions for Telecom operators.” Source: RevenueBase Database · checked Sep 19, 2026
6	Pike Corporation	Indirect evidence	Mount Airy, NC, United StatesHQ checked Sep 19, 2026	10001+	2,082 contacts →
	Indirect evidence “The Pike family of companies is a leading provider of utilities solutions to over 300 investor-owned, municipal and cooperative utilities in the United States.” Source: RevenueBase Database · checked Sep 19, 2026
7	Enercon Services, INC	Indirect evidence	Kennesaw, GA, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,865 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
8	Henkels & Mccoy, INC	Partial evidence	Blue Bell, PA, United StatesHQ checked Sep 19, 2026	5,001-10,000	1,813 contacts →
	Partial evidence “Henkels & McCoy, Inc.(H&M) is a leading utility construction firm providing critical infrastructure for the power, oil & gas pipeline, telecommunications, and gas distribution…” Source: RevenueBase Database · checked Sep 19, 2026
9	Quanta Services, INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	10001+	1,783 contacts →
	Indirect evidence “Quanta Services (NYSE: PWR) is the leading specialty contractor with the largest and highly trained skilled workforce in North America, providing fully integrated solutions for…” Source: RevenueBase Database · checked Sep 19, 2026
10	Westwood Professional Services	Indirect evidence	Plano, TX, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,661 contacts →
	Indirect evidence “At Westwood, our purpose is to create a better world for people through our work.” Source: RevenueBase Database · checked Sep 19, 2026
11	Helix Electric	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,560 contacts →
	Indirect evidence “Helix Electric is an award-winning electrical contractor specializing in design-build and highly complex electrical projects throughout the United States.” Source: RevenueBase Database · checked Sep 19, 2026
12	ITC Holdings Corp	Indirect evidence	Novi, MI, United StatesHQ checked Sep 19, 2026	501-1,000	1,486 contacts →
	Indirect evidence “From electric vehicles to renewables, we’re looking at electricity in a whole new way- because transmission is the key to unlocking our energy future.” Source: RevenueBase Database · checked Sep 19, 2026
13	NPL Construction CO	Partial evidence	Phoenix, AZ, United StatesHQ checked Sep 19, 2026	5,001-10,000	1,358 contacts →
	Partial evidence “NPL is a nationally recognized leader in energy infrastructure construction, with 50 years of experience.” Source: RevenueBase Database · checked Sep 19, 2026
14	Mears Group, INC	Partial evidence	Englewood, CO, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,143 contacts →
	Partial evidence “Mears is an industry-leading energy infrastructure solutions provider offering engineering, construction and maintenance services to the oil and natural gas, electric transmission…” Source: RevenueBase Database · checked Sep 19, 2026
15	MYR Group	Indirect evidence	Thornton, CO, United StatesHQ checked Sep 19, 2026	5,001-10,000	1,092 contacts →
	Indirect evidence “With roots dating to 1891 and 8,500+ employees, MYR Group Inc.” Source: RevenueBase Database · checked Sep 19, 2026
16	Hubbell Power Systems	Indirect evidence	Columbia, SC, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,079 contacts →
	Indirect 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 19, 2026
17	Team Fishel	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,074 contacts →
	Indirect evidence “Team Fishel is a family-owned and operated utility engineering, construction, installation, and maintenance services provider for natural gas distribution, electric power…” Source: RevenueBase Database · checked Sep 19, 2026
18	Industrial Electric Mfg. IEM	Indirect evidence	Fremont, CA, United StatesHQ checked Sep 19, 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 19, 2026
19	Mitsubishi Electric Power Products, INC	Indirect evidence	Warrendale, PA, United StatesHQ checked Sep 19, 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 19, 2026
20	Dashiell Corporation	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	1,001-5,000	940 contacts →
	Indirect evidence “Dashiell is a leading national provider of technical services to the electric utility, power generation, industrial, renewable and energy industries.” Source: RevenueBase Database · checked Sep 19, 2026
21	SAE Towers	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	1,001-5,000	928 contacts →
	Indirect evidence “SAE Towers is one of the world’s largest producers of steel lattice towers for high-voltage power transmission.” Source: RevenueBase Database · checked Sep 19, 2026
22	Mesa Associates, INC	Indirect evidence	Madison, AL, United StatesHQ checked Sep 19, 2026	1,001-5,000	897 contacts →
	Indirect evidence “Mesa is a full service engineering, procurement, and construction management firm specializing in providing engineering services to electric utility, heavy industrial, and…” Source: RevenueBase Database · checked Sep 19, 2026
23	Electrical Consultants, INC	Indirect evidence	Billings, MT, United StatesHQ checked Sep 19, 2026	1,001-5,000	890 contacts →
	Indirect evidence “Electrical Consultants, Inc.(ECI) is an employee-owned, national provider of high voltage transmission, substation, and distribution solutions.” Source: RevenueBase Database · checked Sep 19, 2026
24	Maclean Power Systems	Indirect evidence	Fort Mill, SC, United StatesHQ checked Sep 19, 2026	1,001-5,000	858 contacts →
	Indirect evidence “MacLean Power Systems (MPS), headquartered in Fort Mill, SC, is LEADING THE WAY™ in delivering innovative, reliable, and resilient solutions for the electric utility…” Source: RevenueBase Database · checked Sep 19, 2026
25	California ISO	Indirect evidence	Folsom, CA, United StatesHQ checked Sep 19, 2026	501-1,000	847 contacts →
	Indirect evidence “The California Independent System Operator (ISO) manages the flow of electricity across the high-voltage, long-distance power lines that make up 80 percent of California's power…” Source: RevenueBase Database · checked Sep 19, 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: grid infrastructure 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 grid infrastructure companies.
Partial evidence: Its own public description names part of grid infrastructure companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name grid infrastructure 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 1,626 grid infrastructure companies based in the United States

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Grid infrastructure companies based in the United States at a glance

As of Sep 19, 2026

39.0%Verified-email coverage

72.2Average contacts per company

11-50Median size (employees)

3.6%Largest-city concentration · Houston

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

410

11-50

506

51-200

379

201-500

146

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 1,626 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 grid infrastructure 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 “grid infrastructure 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 grid infrastructure 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 grid infrastructure 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, 45,786 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 19, 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.

Grid infrastructure companies by metro

Grid infrastructure companies in Houston59

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 grid infrastructure 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 grid infrastructure companies are there based in the United States?

RevenueBase identified 1,626 grid infrastructure 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?

Firstenergy, headquartered in Akron, tops this list with the largest team on record.

Which city has the most grid infrastructure companies?

Houston leads with 59 headquartered companies, followed by Denver (15) and Phoenix (12).

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 45,786 verified decision-maker contacts tracked across these 1,626 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 19, 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.