Company lists · Data refreshed September 2026

Top 25 Transmission and distribution companies based in the United States

Name: Transmission and distribution 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 233 companies tracked

RevenueBase identified 233 transmission and distribution companies headquartered in the United States as of September 2026 and tracks 114,893 professional contacts across them, including 30,773 with verified work emails. Houston is the largest hub.

This list covers transmission and distribution 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

233Companies

114,893Contacts tracked

30,773Verified emails

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The 25 largest transmission and distribution companies based in the United States

Ranked by team size

Top 25 of 233 transmission and distribution 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 transmission and distribution 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	Entergy	Indirect evidence	New Orleans, LA, United StatesHQ checked Sep 19, 2026	10001+	11,015 contacts →
	Indirect evidence “At Entergy (NYSE: ETR), we power life.” Source: RevenueBase Database · checked Sep 19, 2026
2	American Electric Power	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 19, 2026	10001+	10,964 contacts →
	Indirect evidence “Our team at American Electric Power is committed to improving our customers' lives with reliable, affordable power.” Source: RevenueBase Database · checked Sep 19, 2026
3	Exelon	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	10001+	7,790 contacts →
	Indirect evidence “Exelon Corporation (Nasdaq: EXC) is one of the nation’s largest utility companies, serving more than 10 million customers through six fully regulated utilities.” Source: RevenueBase Database · checked Sep 19, 2026
4	PSEG	Indirect evidence	Newark, NJ, United StatesHQ checked Sep 19, 2026	10001+	7,446 contacts →
	Indirect evidence “Public service” is not just in our name.” Source: RevenueBase Database · checked Sep 19, 2026
5	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
6	Nextera Energy Resources	Indirect evidence	Juno Beach, FL, United StatesHQ checked Sep 19, 2026	10001+	6,221 contacts →
	Indirect 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
7	Georgia Power Company	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 19, 2026	10001+	5,036 contacts →
	Indirect evidence “High reliability, low prices and high customer satisfaction are cornerstones of our customer commitment, but it doesn't end there.” Source: RevenueBase Database · checked Sep 19, 2026
8	Nisource	Indirect evidence	Merrillville, IN, United StatesHQ checked Sep 19, 2026	5,001-10,000	4,359 contacts →
	Indirect evidence “NiSource (NYSE: NI) helps energize the lives of its nearly 4 million natural gas and electric customers across six states.” Source: RevenueBase Database · checked Sep 19, 2026
9	Oncor Electric Delivery	Strong evidence	Dallas, TX, United StatesHQ checked Sep 19, 2026	1,001-5,000	3,586 contacts →
	Strong evidence “Oncor Electric Delivery Company LLC, headquartered in Dallas, is a regulated electricity distribution and transmission business that uses superior asset management skills to…” Source: RevenueBase Database · checked Sep 19, 2026
10	Vistra Corp	Indirect evidence	Irving, TX, United StatesHQ checked Sep 19, 2026	5,001-10,000	2,466 contacts →
	Indirect evidence “Vistra (NYSE: VST) is a leading Fortune 500 integrated retail electricity and power generation company, based in Irving, Texas, that provides essential resources to customers…” Source: RevenueBase Database · checked Sep 19, 2026
11	NV Energy	Indirect evidence	Las Vegas, NV, United StatesHQ checked Sep 19, 2026	1,001-5,000	2,110 contacts →
	Indirect evidence “Headquartered in Las Vegas, Nevada, NV Energy, Inc.” Source: RevenueBase Database · checked Sep 19, 2026
12	Spectra Energy	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	5,001-10,000	2,079 contacts →
	Indirect evidence “Spectra Energy is now Enbridge Inc.” Source: RevenueBase Database · checked Sep 19, 2026
13	Lg&e And KU Energy LLC	Indirect evidence	Louisville, KY, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,663 contacts →
	Indirect evidence “Louisville Gas and Electric Company and Kentucky Utilities Company, part of the PPL Corporation (NYSE: PPL) family of companies, are regulated utilities that serve a total of 1.2…” Source: RevenueBase Database · checked Sep 19, 2026
14	Baltimore GAS And Electric	Indirect evidence	Baltimore, MD, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,512 contacts →
	Indirect evidence “BGE, headquartered in Baltimore, is Maryland’s largest gas and electric utility, delivering power to more than 1.3 million electric customers and more than natural gas customers…” Source: RevenueBase Database · checked Sep 19, 2026
15	ITC Holdings Corp	Partial evidence	Novi, MI, United StatesHQ checked Sep 19, 2026	501-1,000	1,486 contacts →
	Partial 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
16	WEC Energy Group	Indirect evidence	Milwaukee, WI, United StatesHQ checked Sep 19, 2026	5,001-10,000	1,448 contacts →
	Indirect evidence “WEC Energy Group is one of the nation’s largest electric and natural gas delivery companies, with deep operational expertise, scale and financial resources to meet the region’s…” Source: RevenueBase Database · checked Sep 19, 2026
17	Santee Cooper	Indirect evidence	Moncks Corner, SC, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,393 contacts →
	Indirect evidence “Santee Cooper is South Carolina’s largest power producer, the largest Green Power generator and the ultimate source of electricity for 2 million people across the state.” Source: RevenueBase Database · checked Sep 19, 2026
18	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
19	Howard Industries	Partial evidence	Ellisville, MS, United StatesHQ checked Sep 19, 2026	1,001-5,000	941 contacts →
	Partial evidence “Howard Industries is the leading manufacturer of liquid-filled distribution transformers for the utility and commercial/industrial markets.” Source: RevenueBase Database · checked Sep 19, 2026
20	Reliant Energy	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	1,001-5,000	917 contacts →
	Indirect evidence “Reliant has deep Texas roots.” Source: RevenueBase Database · checked Sep 19, 2026
21	Electrical Consultants, INC	Strong evidence	Billings, MT, United StatesHQ checked Sep 19, 2026	1,001-5,000	890 contacts →
	Strong 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
22	Central Hudson	Strong evidence	Poughkeepsie, NY, United StatesHQ checked Sep 19, 2026	501-1,000	790 contacts →
	Strong evidence “Central Hudson Gas & Electric Corporation is a regulated transmission and distribution utility serving approximately electric customers and natural gas customers in New York…” Source: RevenueBase Database · checked Sep 19, 2026
23	ISO NEW England INC	Indirect evidence	Holyoke, MA, United StatesHQ checked Sep 19, 2026	501-1,000	723 contacts →
	Indirect evidence “Keeping the power flowing reliably and at competitive prices to the homes, businesses, and industries across the six diverse states of New England is a complicated, demanding, and…” Source: RevenueBase Database · checked Sep 19, 2026
24	Imperial Irrigation District	Indirect evidence	Imperial, CA, United StatesHQ checked Sep 19, 2026	1,001-5,000	679 contacts →
	Indirect evidence “IID has two core businesses and one overarching mission - to keep the lights on and the water flowing.” Source: RevenueBase Database · checked Sep 19, 2026
25	ATC	Indirect evidence	Waukesha, WI, United StatesHQ checked Sep 19, 2026	501-1,000	678 contacts →
	Indirect evidence “ATC is connecting you with a sustainable energy future.” 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: transmission and distribution 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 transmission and distribution companies.
Partial evidence: Its own public description names part of transmission and distribution companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name transmission and distribution 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 233 transmission and distribution companies based in the United States

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Transmission and distribution companies based in the United States at a glance

As of Sep 19, 2026

26.8%Verified-email coverage

493.1Average contacts per company

11-50Median size (employees)

5.6%Largest-city concentration · Houston

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

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 233 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 transmission and distribution 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 “transmission and distribution 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 transmission and distribution 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 transmission and distribution 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, 30,773 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.

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 transmission and distribution 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 transmission and distribution companies are there based in the United States?

RevenueBase identified 233 transmission and distribution 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?

Entergy, headquartered in New Orleans, tops this list with the largest team on record.

Which city has the most transmission and distribution companies?

Houston leads with 13 headquartered companies, followed by New York (6) and Atlanta (3).

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 30,773 verified decision-maker contacts tracked across these 233 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.