Company lists · Data refreshed September 2026

Top 25 Electrical transmission companies worldwide

Name: Electrical transmission companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 4,968 companies tracked

RevenueBase identified 4,968 electrical transmission companies worldwide as of September 2026 and tracks 318,605 professional contacts across them, including 91,329 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers electrical transmission companies worldwide, 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. Country and city lists for electrical transmission companies follow the table.

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

4,968Companies

318,605Contacts tracked

91,329Verified emails

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The 25 largest electrical transmission companies worldwide

Ranked by team size

Top 25 of 4,968 electrical transmission companies worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to electrical transmission 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	American Electric Power	Partial evidence	Columbus, OH, United StatesHQ checked Sep 19, 2026	10001+	10,964 contacts →
	Partial 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
2	KEC International LTD	Indirect evidence	Mumbai, IndiaHQ checked Sep 19, 2026	5,001-10,000	10,868 contacts →
	Indirect evidence “KEC International Limited, the flagship company of RPG Enterprises is a diversified global infrastructure Engineering, Procurement & Construction (EPC) major, with a presence in…” Source: RevenueBase Database · checked Sep 19, 2026
3	Tata Power	Indirect evidence	Mumbai, IndiaHQ checked Sep 19, 2026	10001+	9,414 contacts →
	Indirect evidence “Tata Power is one of India’s largest integrated power companies and together with its subsidiaries and jointly controlled entities, has an installed/managed capacity of 14,294 MW.” Source: RevenueBase Database · checked Sep 19, 2026
4	Grupo Energisa	Indirect evidence	Cataguases, BrazilHQ checked Sep 19, 2026	10001+	9,212 contacts →
	Indirect evidence “O Grupo Energisa tem na distribuição de energia elétrica a principal base de seu negócio.” Source: RevenueBase Database · checked Sep 19, 2026
5	Réseau DE Transport D'électricité	Indirect evidence	La Defense Cedex, FranceHQ checked Sep 19, 2026	10001+	7,307 contacts →
	Indirect evidence “Chaque jour, nous faisons du réseau électrique le moteur d’une France décarbonée en transportant l’électricité à chaque seconde et en veillant en permanence à son équilibre…” Source: RevenueBase Database · checked Sep 19, 2026
6	Firstenergy	Partial evidence	Akron, OH, United StatesHQ checked Sep 19, 2026	10001+	6,434 contacts →
	Partial 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
7	Nexans	Indirect evidence	Courbevoie, FranceHQ checked Sep 19, 2026	10001+	6,409 contacts →
	Indirect evidence “For over a century, Nexans has played a crucial role in the electrification of the planet and is committed to electrifying the future.” Source: RevenueBase Database · checked Sep 19, 2026
8	Power Grid Corporation Of India Limited	Partial evidence	Gurgaon, IndiaHQ checked Sep 19, 2026	5,001-10,000	5,997 contacts →
	Partial evidence “Power Grid Corporation of India Limited (POWERGRID), is a 'Maharatna' Company operating under Ministry of Power, is engaged in power transmission business.” Source: RevenueBase Database · checked Sep 19, 2026
9	Primoris Services Corporation	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 19, 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 19, 2026
10	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
11	KENTZ	Indirect evidence	Dubai, United Arab EmiratesHQ checked Sep 19, 2026	10001+	3,987 contacts →
	Indirect evidence “Following the acquisition of SNC-Lavalin's oil and gas division, Kentz has become a part of Kent.” Source: RevenueBase Database · checked Sep 19, 2026
12	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
13	Nextera Energy, INC	Partial evidence	Juno Beach, FL, United StatesHQ checked Sep 19, 2026	10001+	3,478 contacts →
	Partial evidence “NextEra Energy, Inc.(NYSE: NEE) is one of the largest electric power and energy infrastructure companies in North America and is a leading provider of electricity to American…” Source: RevenueBase Database · checked Sep 19, 2026
14	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
15	IEC	Partial evidence	Haifa, IsraelHQ checked Sep 19, 2026	10001+	3,195 contacts →
	Partial evidence “The Israel Electric Corporation (IEC) is a public, government company, 99.85% of its shares are government-owned and traded on the Tel-Aviv and Singapore stock exchange.” Source: RevenueBase Database · checked Sep 19, 2026
16	NKT	Indirect evidence	Copenhagen, DenmarkHQ checked Sep 19, 2026	5,001-10,000	2,931 contacts →
	Indirect evidence “NKT connects a greener world with high-quality power cable technology and plays a key role as the world moves towards clean energy.” Source: RevenueBase Database · checked Sep 19, 2026
17	Edenor	Partial evidence	Buenos Aires, ArgentinaHQ checked Sep 19, 2026	1,001-5,000	2,531 contacts →
	Partial evidence “Somos la mayor distribuidora de energía eléctrica de la Argentina en términos de cantidad de clientes y electricidad vendida.” Source: RevenueBase Database · checked Sep 19, 2026
18	Société Tunisienne DE L'electricité ET DU GAZ Steg	Partial evidence	Tunis, TunisiaHQ checked Sep 19, 2026	10001+	2,475 contacts →
	Partial evidence “The Tunisian Company of Electricity and Gas (STEG) as a public and a non administrative company, has the essential role to : • Electrify the country • Develop the natural gas…” Source: RevenueBase Database · checked Sep 19, 2026
19	Invenergy	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 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 19, 2026
20	Tabocas Participações Empreendimentos S A	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 19, 2026	10001+	2,204 contacts →
	Indirect evidence “Fundada em abril de em Belo Horizonte (MG), a Tabocas é referência nacional na modalidade EPC Full, dentro dos setores de construção e engenharia civil, com foco de atuação na…” Source: RevenueBase Database · checked Sep 19, 2026
21	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
22	EDP Brasil	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 19, 2026	1,001-5,000	2,049 contacts →
	Indirect evidence “Com mais de 20 anos de atuação no Brasil, a EDP é uma das maiores empresas privadas do setor elétrico a operar em toda a cadeia de valor.” Source: RevenueBase Database · checked Sep 19, 2026
23	Areva T&d	Strong evidence	92084 Paris - La Défense, FranceHQ checked Sep 19, 2026	10001+	2,012 contacts →
	Strong evidence “One of the top three global players in the transmission and distribution of energy, AREVA T&D offers solutions to bring electricity from the source onto the power network.” Source: RevenueBase Database · checked Sep 19, 2026
24	Korea Electric Power Corporation Kepco	Partial evidence	South KoreaHQ checked Sep 19, 2026	10001+	1,994 contacts →
	Partial evidence “Korea Electric Power Corporation (“KEPCO”) is a state-owned, integrated electric utility company in the Republic of Korea, whose six generation subsidiaries produce the majority…” Source: RevenueBase Database · checked Sep 19, 2026
25	Service Stream	Indirect evidence	Docklands, AustraliaHQ checked Sep 19, 2026	1,001-5,000	1,823 contacts →
	Indirect evidence “Service Stream plays a vital role, working with our clients in keeping communities connected to essential network services across Australia.” 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: electrical transmission 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 electrical transmission companies.
Partial evidence: Its own public description names part of electrical transmission companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name electrical transmission 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 4,968 electrical transmission companies worldwide

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Electrical transmission companies worldwide at a glance

As of Sep 19, 2026

28.7%Verified-email coverage

64.1Average contacts per company

11-50Median size (employees)

0.8%Largest-city concentration · Sao Paulo

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

1,263

11-50

1,641

51-200

1,093

201-500

452

501-1,000

200

1,001-5,000

205

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 electrical transmission 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.
Coverage: Every country. Country and city lists for electrical transmission companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “electrical transmission 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 electrical transmission 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 electrical transmission companies, and records with no verified work email.
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, 91,329 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.

Electrical transmission companies by location

24 lists · largest first

Every Electrical transmission companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 electrical transmission 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 electrical transmission companies are there worldwide?

RevenueBase identified 4,968 electrical transmission companies worldwide 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?

American Electric Power, headquartered in Columbus, tops this list with the largest team on record.

Which country has the most electrical transmission companies?

The United States leads with 918 companies, followed by Brazil (408) and India (355). Every electrical transmission companies list by country and city is linked on this page.

Which city has the most electrical transmission companies?

Sao Paulo leads with 40 headquartered companies, followed by Houston (32) and Tehran (27).

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 91,329 verified decision-maker contacts tracked across these 4,968 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.