Company lists · Data refreshed September 2026

Top 25 Energy infrastructure companies worldwide

Name: Energy infrastructure companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 7,992 companies tracked

RevenueBase identified 7,992 energy infrastructure companies worldwide as of September 2026 and tracks 988,448 professional contacts across them, including 297,793 with verified work emails and 0 with mobile numbers. The United States is the largest market and Houston the largest hub.

This list covers energy infrastructure 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 16, 2026. Country and city lists for energy infrastructure 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 16, 2026 86% judged on-target in blind review

7,992Companies

988,448Contacts tracked

297,793Verified emails

0Mobile numbers

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The 25 largest energy infrastructure companies worldwide

Ranked by team size

Top 25 of 7,992 energy infrastructure companies worldwide, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to energy 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	Siemens Energy	Partial evidence	Munich, GermanyHQ checked Sep 16, 2026	10001+	46,587 contacts →
	Partial evidence “Siemens Energy is one of the world’s leading energy technology companies.” Source: RevenueBase Database · checked Sep 16, 2026
2	Saipem	Strong evidence	Milan, ItalyHQ checked Sep 16, 2026	10001+	34,095 contacts →
	Strong evidence “Saipem is a global leader in the engineering and construction of major projects for the energy and infrastructure sectors, both offshore and onshore.” Source: RevenueBase Database · checked Sep 16, 2026
3	Duke Energy Corporation	Partial evidence	Charlotte, NC, United StatesHQ checked Sep 16, 2026	10001+	24,500 contacts →
	Partial evidence “Duke Energy, a Fortune 150 company headquartered in Charlotte, N.C, is one of America’s largest energy holding companies.” Source: RevenueBase Database · checked Sep 16, 2026
4	National Grid	Partial evidence	London, United KingdomHQ checked Sep 16, 2026	10001+	24,403 contacts →
	Partial evidence “We power the lives of millions of people across Britain, New York and Massachusetts, moving energy from where it’s made to the communities that need it, every single day.” Source: RevenueBase Database · checked Sep 16, 2026
5	e.on	Strong evidence	Essen, GermanyHQ checked Sep 16, 2026	10001+	21,622 contacts →
	Strong evidence “We are one of Europe's largest energy companies with the business areas of energy networks, energy infrastructure solutions and energy sales.” Source: RevenueBase Database · checked Sep 16, 2026
6	Mcdermott International, LTD	Partial evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	10001+	20,135 contacts →
	Partial evidence “McDermott is a premier provider of engineering and construction solutions to the energy industry.” Source: RevenueBase Database · checked Sep 16, 2026
7	GE Power	Partial evidence	Schenectady, NY, United StatesHQ checked Sep 16, 2026	10001+	16,095 contacts →
	Partial evidence “GE Power, part of GE Vernova, is a world energy leader that provides technology, solutions and services across the entire energy value chain from the point of generation to…” Source: RevenueBase Database · checked Sep 16, 2026
8	Enel Group	Partial evidence	Rome, ItalyHQ checked Sep 16, 2026	10001+	15,726 contacts →
	Partial evidence “We are a multinational company reshaping the future of energy and one of the world’s leading integrated electricity operators.” Source: RevenueBase Database · checked Sep 16, 2026
9	ENGIE	Indirect evidence	Paris, FranceHQ checked Sep 16, 2026	10001+	15,504 contacts →
	Indirect evidence “What if your next career adventure started with ENGIE?” Source: RevenueBase Database · checked Sep 16, 2026
10	Equinor	Partial evidence	Stavanger, NorwayHQ checked Sep 16, 2026	10001+	14,332 contacts →
	Partial evidence “We provide reliable energy for a world with growing demand.” Source: RevenueBase Database · checked Sep 16, 2026
11	RWE	Partial evidence	Essen, GermanyHQ checked Sep 16, 2026	10001+	11,181 contacts →
	Partial evidence “RWE is leading the way to a modern energy world.” Source: RevenueBase Database · checked Sep 16, 2026
12	Entergy	Indirect evidence	New Orleans, LA, United StatesHQ checked Sep 16, 2026	10001+	11,015 contacts →
	Indirect evidence “At Entergy (NYSE: ETR), we power life.” Source: RevenueBase Database · checked Sep 16, 2026
13	Ecopetrol	Partial evidence	Bogota, ColombiaHQ checked Sep 16, 2026	10001+	10,937 contacts →
	Partial evidence “Ecopetrol (NYSE: EC) es la compañía más grande en Colombia y uno de los principales grupos de energía de Latinoamérica.” Source: RevenueBase Database · checked Sep 16, 2026
14	KEC International LTD	Partial evidence	Mumbai, IndiaHQ checked Sep 16, 2026	5,001-10,000	10,868 contacts →
	Partial 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 16, 2026
15	Constellation	Partial evidence	Baltimore, MD, United StatesHQ checked Sep 16, 2026	10001+	9,458 contacts →
	Partial evidence “Constellation Energy Corporation (Nasdaq: CEG), a Fortune 200 company headquartered in Baltimore, is the nation’s largest producer of reliable, emissions-free energy and a leading…” Source: RevenueBase Database · checked Sep 16, 2026
16	Tata Power	Indirect evidence	Mumbai, IndiaHQ checked Sep 16, 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 16, 2026
17	DTE Energy	Partial evidence	Detroit, MI, United StatesHQ checked Sep 16, 2026	10001+	9,087 contacts →
	Partial evidence “DTE is one of the largest Fortune 500 diversified energy companies, proudly serving Michigan for over a century.” Source: RevenueBase Database · checked Sep 16, 2026
18	Kinder Morgan, INC	Strong evidence	Houston, TX, United StatesHQ checked Sep 16, 2026	10001+	8,314 contacts →
	Strong evidence “Kinder Morgan, Inc.(NYSE: KMI) is one of the largest energy infrastructure companies in North America.” Source: RevenueBase Database · checked Sep 16, 2026
19	TC Energy	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 16, 2026	5,001-10,000	8,123 contacts →
	Indirect evidence “We are stewards of one of the most valuable resources on Earth.” Source: RevenueBase Database · checked Sep 16, 2026
20	Tenaga Nasional Berhad	Indirect evidence	Kuala Lumpur, MalaysiaHQ checked Sep 16, 2026	10001+	7,862 contacts →
	Indirect evidence “Tenaga Nasional Berhad is a leading Malaysian utility company in Asia with an international presence in the United Kingdom (UK), Ireland, Australia, Turkiye, Saudi Arabia, Kuwait…” Source: RevenueBase Database · checked Sep 16, 2026
21	Cpfl Energia	Indirect evidence	Campinas, BrazilHQ checked Sep 16, 2026	10001+	7,647 contacts →
	Indirect evidence “Estamos há 113 anos construindo a história do setor elétrico brasileiro, atuando nos segmentos de distribuição, geração, transmissão, comercialização e serviços.” Source: RevenueBase Database · checked Sep 16, 2026
22	Iberdrola	Partial evidence	Bilbao, SpainHQ checked Sep 16, 2026	10001+	7,598 contacts →
	Partial evidence “With more than 180 years of history, Iberdrola is today a global energy leader, the leading wind power producer and one of the largest electricity companies in the world in terms…” Source: RevenueBase Database · checked Sep 16, 2026
23	Enbridge	Partial evidence	Calgary, AB, CanadaHQ checked Sep 16, 2026	10001+	7,105 contacts →
	Partial evidence “At Enbridge, our goal is to be the first-choice energy delivery company in North America and beyond-for customers, communities, investors, regulators and policymakers, and…” Source: RevenueBase Database · checked Sep 16, 2026
24	KENT	Indirect evidence	Dubai, United Arab EmiratesHQ checked Sep 16, 2026	10001+	7,045 contacts →
	Indirect evidence “We design, build and maintain the assets that power the world for today and make it future-ready for tomorrow.” Source: RevenueBase Database · checked Sep 16, 2026
25	Firstenergy	Indirect evidence	Akron, OH, United StatesHQ checked Sep 16, 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 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: energy 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 energy infrastructure companies.
Partial evidence: Its own public description names part of energy infrastructure companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy 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 7,992 energy infrastructure companies worldwide

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Energy infrastructure companies worldwide at a glance

As of Sep 16, 2026

30.1%Verified-email coverage

123.7Average contacts per company

11-50Median size (employees)

1.4%Largest-city concentration · Houston

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

2,096

11-50

2,850

51-200

1,590

201-500

636

501-1,000

280

1,001-5,000

361

5,001-10,000

10001+

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 energy 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.
Coverage: 40 countries, largest first: the United States, Italy, Brazil, India, the United Kingdom, Türkiye, Germany, France, Canada, Australia and 30 more. Country and city lists for energy infrastructure companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “energy 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 energy 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 energy infrastructure 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, 297,793 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.

Energy infrastructure companies by location

44 lists · largest first

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

Countries

Cities

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 energy 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 energy infrastructure companies are there worldwide?

RevenueBase identified 7,992 energy infrastructure 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?

Siemens Energy, headquartered in Munich, tops this list with the largest team on record.

Which country has the most energy infrastructure companies?

The United States leads with 1,644 companies, followed by Italy (804) and Brazil (743). Every energy infrastructure companies list by country and city is linked on this page.

Which city has the most energy infrastructure companies?

Houston leads with 115 headquartered companies, followed by Sao Paulo (77) and London (71).

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 297,793 verified decision-maker contacts tracked across these 7,992 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.