Company lists · Data refreshed September 2026

Top 25 Power generation companies worldwide

RevenueBase identified 1,728 power generation companies worldwide as of September 2026 and tracks 566,036 professional contacts across them, including 164,067 with verified work emails and 0 with mobile numbers. The United States is the largest market and Sao Paulo the largest hub.

This list covers power generation 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 power generation 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
1,728Companies
566,036Contacts tracked
164,067Verified emails
0Mobile numbers
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The 25 largest power generation companies worldwide

Ranked by team size
Top 25 of 1,728 power generation companies worldwide, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to power generation 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceMunich, GermanyHQ checked Sep 16, 202610001+46,587 contacts →

Indirect evidence

“Siemens Energy is one of the world’s leading energy technology companies.”

Source: RevenueBase Database · checked Sep 16, 2026
2Indirect evidenceCharlotte, NC, United StatesHQ checked Sep 16, 202610001+24,500 contacts →

Indirect 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
3Partial evidenceLondon, United KingdomHQ checked Sep 16, 202610001+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
4Indirect evidenceEssen, GermanyHQ checked Sep 16, 202610001+21,622 contacts →

Indirect 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
5Strong evidenceNew Delhi, IndiaHQ checked Sep 16, 202610001+19,588 contacts →

Strong evidence

“NTPC Limited is India’s largest power generation utility with roots planted way back in 1975 to accelerate power development in India.”

Source: RevenueBase Database · checked Sep 16, 2026
6Indirect evidenceRome, ItalyHQ checked Sep 16, 202610001+15,726 contacts →

Indirect 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
7Indirect evidenceParis, FranceHQ checked Sep 16, 202610001+15,504 contacts →

Indirect evidence

“What if your next career adventure started with ENGIE?”

Source: RevenueBase Database · checked Sep 16, 2026
8Indirect evidenceMontréal, QC, CanadaHQ checked Sep 16, 202610001+14,673 contacts →

Indirect evidence

“Hydro-Québec produit, transporte et distribue de l'électricité.”

Source: RevenueBase Database · checked Sep 16, 2026
9Partial evidenceNew Orleans, LA, United StatesHQ checked Sep 16, 202610001+11,015 contacts →

Partial evidence

“At Entergy (NYSE: ETR), we power life.”

Source: RevenueBase Database · checked Sep 16, 2026
10Partial evidenceKarachi, PakistanHQ checked Sep 16, 202610001+10,497 contacts →

Partial evidence

“KE (formerly Karachi Electric Supply Company) is the only vertically integrated power utility in Pakistan that generates, transmits and distributes electricity to industrial…”

Source: RevenueBase Database · checked Sep 16, 2026
11Indirect evidenceBaltimore, MD, United StatesHQ checked Sep 16, 202610001+9,458 contacts →

Indirect 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
12Partial evidenceMumbai, IndiaHQ checked Sep 16, 202610001+9,414 contacts →

Partial 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
13Indirect evidenceLondon, United KingdomHQ checked Sep 16, 202610001+8,188 contacts →

Indirect evidence

“EDF is leading the charge towards An Electric Britain to help make energy more affordable and sustainable.”

Source: RevenueBase Database · checked Sep 16, 2026
14Indirect evidenceChicago, IL, United StatesHQ checked Sep 16, 202610001+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 16, 2026
15Indirect evidenceCampinas, BrazilHQ checked Sep 16, 202610001+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
16Partial evidenceBilbao, SpainHQ checked Sep 16, 202610001+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
17Indirect evidenceBrasília, BrazilHQ checked Sep 16, 202610001+7,483 contacts →

Indirect evidence

“O futuro já chegou.”

Source: RevenueBase Database · checked Sep 16, 2026
18Indirect evidenceNewark, NJ, United StatesHQ checked Sep 16, 202610001+7,446 contacts →

Indirect evidence

“Public service” is not just in our name.”

Source: RevenueBase Database · checked Sep 16, 2026
19Indirect evidenceAkron, OH, United StatesHQ checked Sep 16, 202610001+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
20Indirect evidenceJuno Beach, FL, United StatesHQ checked Sep 16, 202610001+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 16, 2026
21Strong evidenceSouth Jakarta, IndonesiaHQ checked Sep 16, 20261,001-5,0005,486 contacts →

Strong evidence

“PT PLN Indonesia Power, known as PLN-IP, is a sub-holding company of PT PLN (Persero) holding which is conducting electric power generation and other supporting businesses.”

Source: RevenueBase Database · checked Sep 16, 2026
22Indirect evidenceAtlanta, GA, United StatesHQ checked Sep 16, 202610001+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 16, 2026
23Indirect evidenceWindsor, United KingdomHQ checked Sep 16, 202610001+4,555 contacts →

Indirect evidence

“Centrica is an international energy services and solutions company, founded on a 200-year heritage of serving customers in homes and businesses.”

Source: RevenueBase Database · checked Sep 16, 2026
24Indirect evidenceMerrillville, IN, United StatesHQ checked Sep 16, 20265,001-10,0004,359 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 16, 2026
25Indirect evidenceCoventry, United KingdomHQ checked Sep 16, 202610001+4,343 contacts →

Indirect evidence

“It's on us to make new energy work.”

Source: RevenueBase Database · checked Sep 16, 2026

Showing 25 of 1,728 power generation companies worldwide

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Power generation companies worldwide at a glance

As of Sep 16, 2026
29.0%Verified-email coverage
327.6Average contacts per company
11-50Median size (employees)
1.8%Largest-city concentration · Sao Paulo
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
405
11-50
510
51-200
329
201-500
155
501-1,000
94
1,001-5,000
135
5,001-10,000
41
10001+
53

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 power generation 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
20 countries, largest first: the United States, Germany, India, Italy, Brazil, Türkiye, Spain, the United Kingdom, France, Poland and 10 more. Country and city lists for power generation companies are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “power generation 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 power generation 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 power generation 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, 164,067 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.

Power generation companies by location

20 lists · largest first

Every Power generation 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 power generation 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 power generation companies are there worldwide?

RevenueBase identified 1,728 power generation 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 power generation companies?

The United States leads with 255 companies, followed by Germany (249) and India (182). Every power generation companies list by country and city is linked on this page.

Which city has the most power generation companies?

Sao Paulo leads with 31 headquartered companies, followed by Houston (30) and Istanbul (30).

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 164,067 verified decision-maker contacts tracked across these 1,728 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.