Company lists · Data refreshed September 2026
Top 25 Investor owned utilities worldwide
RevenueBase identified 322 investor owned utilities worldwide as of September 2026 and tracks 74,875 professional contacts across them, including 22,122 with verified work emails and 0 with mobile numbers. The United States is the largest market and Greenwood the largest hub.
This list covers investor owned utilities 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 17, 2026. Country and city lists for investor owned utilities 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.
The 25 largest investor owned utilities worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 11,015 contacts → | ||||
Indirect evidence “At Entergy (NYSE: ETR), we power life.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 2 | 7,790 contacts → | ||||
Partial 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 17, 2026Thanks. The Data Team will review it. | |||||
| 3 | 7,446 contacts → | ||||
Indirect evidence “Public service” is not just in our name.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 4 | 6,576 contacts → | ||||
Indirect evidence “CenterPoint Energy, Inc.(NYSE: CNP) is a multi-state electric and natural gas delivery company serving approximately 7 million metered customers across Indiana, Minnesota, Ohio…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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 17, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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 17, 2026Thanks. The Data Team will review it. | |||||
| 7 | 3,478 contacts → | ||||
Indirect 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 17, 2026Thanks. The Data Team will review it. | |||||
| 8 | 2,183 contacts → | ||||
Indirect evidence “Advancing smart energy to provide safe, reliable, affordable and clean energy and energy services for our customers and the communities we serve.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 9 | 2,110 contacts → | ||||
Indirect evidence “Headquartered in Las Vegas, Nevada, NV Energy, Inc.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 10 | 1,675 contacts → | ||||
Strong evidence “Colorado Springs Utilities is the largest community-owned, not-for-profit, four-service utility in the nation.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 11 | 1,663 contacts → | ||||
Partial 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 17, 2026Thanks. The Data Team will review it. | |||||
| 12 | 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 17, 2026Thanks. The Data Team will review it. | |||||
| 13 | 1,198 contacts → | ||||
Indirect evidence “Tampa Electric has supplied the Tampa Bay area with electricity since 1899.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 14 | 1,057 contacts → | ||||
Indirect evidence “New York State Electric & Gas (NYSEG) was founded in 1852, and today serves 905,005 electricity customers and 271,547 natural gas customers across more than 40% of upstate New…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 15 | 790 contacts → | ||||
Indirect 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 17, 2026Thanks. The Data Team will review it. | |||||
| 16 | 656 contacts → | ||||
Partial evidence “Knoxville Utilities Board is one of the largest public utilities in the country providing safe, reliable, and affordable electric, natural gas, water, wastewater, and fiber…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 17 | 587 contacts → | ||||
Strong evidence “Gainesville Regional Utilities (GRU) is a multi-service utility owned by the City of Gainesville and is the 5th largest municipal electric utility in Florida.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 18 | 530 contacts → | ||||
Indirect evidence “Unareti è la società unica per i servizi a rete che gestisce in modo integrato e capillare la distribuzione di energia elettrica e gas.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 19 | 451 contacts → | ||||
Partial evidence “The mission of the Metropolitan Utilities District, headquartered in Omaha, Nebraska, is to provide safe, reliable and cost-effective natural gas and water services to our…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 20 | 438 contacts → | ||||
Partial evidence “Since 1905, Greenville Utilities has been an integral part of Greenville-Pitt County, growing and progressing along with our expanding service area.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 21 | 437 contacts → | ||||
Indirect evidence “Rochester Gas and Electric (RG & E) was founded in 1848, and has been in the Rochester community ever since.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 22 | 406 contacts → | ||||
Partial evidence “Founded in 1911, we are Oregon's largest customer-owned utility.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 23 | 391 contacts → | ||||
Indirect evidence “The Edison Electric Institute (EEI) is the association that represents all U.S.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 24 | 390 contacts → | ||||
Indirect evidence “At Rocky Mountain Power we believe in our promise of public service: an obligation to deliver safe, reliable electricity at an affordable price in an environmentally sustainable…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 25 | 377 contacts → | ||||
Indirect evidence “Il Gruppo Unoenergy da oltre 20 anni è uno dei primi operatori - a capitale interamente privato - per la fornitura di gas naturale, energia elettrica e servizi di efficientamento…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
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: investor owned utilities. 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 investor owned utilities.
- Partial evidence
- Its own public description names part of investor owned utilities, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name investor owned utilities. 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 322 investor owned utilities worldwide
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Investor owned utilities worldwide at a glance
As of Sep 17, 2026Companies by employee count
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 investor owned utilities, 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
- 3 countries, largest first: the United States, Germany, Italy. Country and city lists for investor owned utilities are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “investor owned utilities”. 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 investor owned utilities), 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 investor owned utilities, 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, 22,122 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 17, 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.
Investor owned utilities by location
3 lists · largest firstEvery Investor owned utilities 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 investor owned utilities, 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 investor owned utilities are there worldwide?
RevenueBase identified 322 investor owned utilities 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?
Entergy, headquartered in New Orleans, tops this list with the largest team on record.
Which country has the most investor owned utilities?
The United States leads with 156 companies, followed by Germany (131) and Italy (35). Every investor owned utilities list by country and city is linked on this page.
Which city has the most investor owned utilities?
Greenwood leads with 4 headquartered companies, followed by Vicenza (3) and Albertville (2).
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 22,122 verified decision-maker contacts tracked across these 322 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 17, 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.