Company lists · Data refreshed September 2026

Top 25 Grid connection contractors based in the United States

Name: Grid connection contractors based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 1,151 companies tracked

RevenueBase identified 1,151 grid connection contractors headquartered in the United States as of September 2026 and tracks 55,146 professional contacts across them, including 21,937 with verified work emails. Houston is the largest hub.

This list covers grid connection contractors 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 16, 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 16, 2026 86% judged on-target in blind review

1,151Companies

55,146Contacts tracked

21,937Verified emails

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The 25 largest grid connection contractors based in the United States

Ranked by team size

Top 25 of 1,151 grid connection contractors based in the United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to grid connection contractors: 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	Primoris Services Corporation	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 16, 2026	10001+	4,089 contacts →
	Indirect 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 16, 2026
2	Hubbell Incorporated	Indirect evidence	Shelton, CT, United StatesHQ checked Sep 16, 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 16, 2026
3	FTI	Indirect evidence	Menasha, WI, United StatesHQ checked Sep 16, 2026	1,001-5,000	2,741 contacts →
	Indirect evidence “Faith Technologies Incorporated (FTI) is a dynamic organization comprised of construction, engineering, manufacturing and renewable energy experts.” Source: RevenueBase Database · checked Sep 16, 2026
4	Pearce Services	Indirect evidence	Paso Robles, CA, United StatesHQ checked Sep 16, 2026	1,001-5,000	2,620 contacts →
	Indirect evidence “PEARCE from CBRE is the largest national independent provider of outsourced repair, maintenance, and engineering services to critical infrastructure in the renewable energy, power…” Source: RevenueBase Database · checked Sep 16, 2026
5	Invenergy	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 16, 2026	1,001-5,000	2,408 contacts →
	Indirect evidence “Invenergy is North America’s largest privately held developer, owner, and operator of innovative, reliable power infrastructure.” Source: RevenueBase Database · checked Sep 16, 2026
6	MYR Group	Indirect evidence	Thornton, CO, United StatesHQ checked Sep 16, 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 16, 2026
7	Dashiell Corporation	Indirect evidence	Houston, TX, United StatesHQ checked Sep 16, 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 16, 2026
8	Wanzek Construction, Inc., A Mastec Company	Partial evidence	Fargo, ND, United StatesHQ checked Sep 16, 2026	1,001-5,000	933 contacts →
	Partial evidence “Wanzek Construction, Inc, a MasTec Renewables company, is a leading general construction contractor and clean energy services company headquartered in Fargo, North Dakota.” Source: RevenueBase Database · checked Sep 16, 2026
9	Electrical Consultants, INC	Indirect evidence	Billings, MT, United StatesHQ checked Sep 16, 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 16, 2026
10	Baker Electric	Partial evidence	Escondido, CA, United StatesHQ checked Sep 16, 2026	501-1,000	680 contacts →
	Partial evidence “Baker Electric is a full-service electrical contractor and energy infrastructure expert headquartered in Escondido, California.” Source: RevenueBase Database · checked Sep 16, 2026
11	Willbros	Partial evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	10001+	665 contacts →
	Partial evidence “Primoris is a specialty energy infrastructure contractor serving the oil and gas and power industries with offerings that primarily include construction, maintenance and…” Source: RevenueBase Database · checked Sep 16, 2026
12	M. J. Electric, LLC	Indirect evidence	Iron Mountain, MI, United StatesHQ checked Sep 16, 2026	1,001-5,000	621 contacts →
	Indirect evidence “M.” Source: RevenueBase Database · checked Sep 16, 2026
13	PAR Electrical Contractors, LLC	Indirect evidence	Kansas City, MO, United StatesHQ checked Sep 16, 2026	1,001-5,000	606 contacts →
	Indirect evidence “PAR, a Quanta Services company, offers a full range of construction services for substations, overhead and underground distribution and transmission lines, engineering, design…” Source: RevenueBase Database · checked Sep 16, 2026
14	Alterman, INC	Indirect evidence	Live Oak, TX, United StatesHQ checked Sep 16, 2026	501-1,000	597 contacts →
	Indirect evidence “Since 1923, Alterman has provided electrical construction on many of San Antonio and Austin's most impressive landmarks and contemporary structures.” Source: RevenueBase Database · checked Sep 16, 2026
15	Irby Construction Company	Indirect evidence	Richland, MS, United StatesHQ checked Sep 16, 2026	501-1,000	559 contacts →
	Indirect evidence “Irby Construction Company, a wholly owned subsidiary of Quanta Services, Inc, excels in the processes required for major transmission, substation and distribution line…” Source: RevenueBase Database · checked Sep 16, 2026
16	Saber Power	Indirect evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	1,001-5,000	521 contacts →
	Indirect evidence “Saber Power Services, a portfolio company of Greenbelt Capital Partners, is a fully integrated electrical power system services firm providing end-to-end solutions across utility…” Source: RevenueBase Database · checked Sep 16, 2026
17	Resa Power	Indirect evidence	Houston, TX, United StatesHQ checked Sep 16, 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 16, 2026
18	EC Electric	Partial evidence	Portland, OR, United StatesHQ checked Sep 16, 2026	1,001-5,000	490 contacts →
	Partial evidence “Our lives function on a power grid.” Source: RevenueBase Database · checked Sep 16, 2026
19	Babcock Power	Indirect evidence	Danvers, MA, United StatesHQ checked Sep 16, 2026	501-1,000	476 contacts →
	Indirect evidence “Finding a single capable partner to support both large- and small-scale power generation needs can be challenging.” Source: RevenueBase Database · checked Sep 16, 2026
20	Jmeg Electrical Contractors	Indirect evidence	Farmers Branch, TX, United StatesHQ checked Sep 16, 2026	501-1,000	437 contacts →
	Indirect evidence “JMEG is a team of professionals who have been providing electrical construction services for over 35 years throughout the state of Texas.” Source: RevenueBase Database · checked Sep 16, 2026
21	Utility Partners Of America	Partial evidence	Greer, SC, United StatesHQ checked Sep 16, 2026	1,001-5,000	427 contacts →
	Partial evidence “Utility Partners of America (UPA) is a leading and well-respected National Utility Contractor that builds, inspects, maintains, and upgrades our nation’s utility infrastructure.” Source: RevenueBase Database · checked Sep 16, 2026
22	Concentric Power Services	Indirect evidence	Carrollton, TX, United StatesHQ checked Sep 16, 2026	1,001-5,000	426 contacts →
	Indirect evidence “Concentric is the first national industrial power services organization delivering forklift and critical power as well as maintenance solutions that ensure uninterrupted…” Source: RevenueBase Database · checked Sep 16, 2026
23	Open Systems International	Indirect evidence	Bedford, MA, United StatesHQ checked Sep 16, 2026	1,001-5,000	422 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
24	K&a Power	Indirect evidence	Syracuse, NY, United StatesHQ checked Sep 16, 2026	201-500	410 contacts →
	Indirect evidence “K&A Power is a global energy infrastructure company focused on developing, engineering, delivering, and operating the critical systems that power modern economies.” Source: RevenueBase Database · checked Sep 16, 2026
25	Signal Energy	Partial evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	1,001-5,000	409 contacts →
	Partial evidence “Signal Energy is a leading full service design/build contractor providing Engineering, Procurement, and Construction (EPC) services for renewable energy & infrastructure projects.” Source: RevenueBase Database · checked Sep 16, 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 connection contractors. 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 connection contractors.
Partial evidence: Its own public description names part of grid connection contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name grid connection contractors. 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 1,151 grid connection contractors based in the United States

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Grid connection contractors based in the United States at a glance

As of Sep 16, 2026

39.8%Verified-email coverage

47.9Average contacts per company

11-50Median size (employees)

2.3%Largest-city concentration · Houston

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

373

11-50

391

51-200

206

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 1,151 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 connection contractors, 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 connection contractors”. 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 connection contractors), 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 connection contractors, 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, 21,937 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 16, 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 connection contractors by metro

Grid connection contractors in Houston27

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 connection contractors, 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 connection contractors are there based in the United States?

RevenueBase identified 1,151 grid connection contractors 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?

Primoris Services Corporation, headquartered in Dallas, tops this list with the largest team on record.

Which city has the most grid connection contractors?

Houston leads with 27 headquartered companies, followed by New York (14) and Chicago (11).

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 21,937 verified decision-maker contacts tracked across these 1,151 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 16, 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.