Company lists · Data refreshed September 2026
Top 25 Utility worldwide
RevenueBase identified 626 utility worldwide as of September 2026 and tracks 96,893 professional contacts across them, including 33,595 with verified work emails and 0 with mobile numbers. Germany is the largest market and Sao Paulo the largest hub.
This list covers utility 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 utility 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 utility worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 11,172 contacts → | ||||
Indirect evidence “A leading energy provider, dedicated to excellence.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 7,446 contacts → | ||||
Indirect evidence “Public service” is not just in our name.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 6,434 contacts → | ||||
Strong 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, 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 19, 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 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 3,158 contacts → | ||||
Strong evidence “As Manitoba’s major energy utility, we: • Generate and distribute electricity around the province.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 2,944 contacts → | ||||
Indirect evidence “The Hera Group is the first Italian coalescence of municipally owned companies that (adopting a multi-business approach oriented to the creation of shared value for all…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 2,511 contacts → | ||||
Indirect evidence “Clean water, reliable electricity, drainage services and natural gas are at the heart of what we do.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 2,431 contacts → | ||||
Indirect evidence “With its energy supply, outstanding services, integrated local public transport system and many public swimming pools, Stadtwerke München (SWM) makes an enormous contribution to…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 2,335 contacts → | ||||
Indirect evidence “ATCO is a global leader in housing, energy and defence, delivering the essential services people and communities depend on every day.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 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 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 2,110 contacts → | ||||
Indirect evidence “Headquartered in Las Vegas, Nevada, NV Energy, Inc.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 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 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 1,663 contacts → | ||||
Strong 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, 2026Thanks. The Data Team will review it. | |||||
| 16 | 1,611 contacts → | ||||
Indirect evidence “Founded in 1872, Comgás has seen many changes before being what it is today, in over 140 years of history.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 1,512 contacts → | ||||
Strong 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, 2026Thanks. The Data Team will review it. | |||||
| 18 | 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, 2026Thanks. The Data Team will review it. | |||||
| 19 | 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 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 917 contacts → | ||||
Indirect evidence “Reliant has deep Texas roots.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 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, 2026Thanks. The Data Team will review it. | |||||
| 22 | 762 contacts → | ||||
Strong evidence “We are Wales & West Utilities, your gas emergency and pipeline service.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 733 contacts → | ||||
Indirect evidence “Wir bei SachsenEnergie sind regionaler Leistungsführer in der Energiebranche und sorgen mit modernen, marktgerechten Lösungen rund um Strom, Gas, Wärme, Wasser, Telekommunikation…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 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, 2026Thanks. The Data Team will review it. | |||||
| 25 | 656 contacts → | ||||
Strong 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 19, 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: utility. 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 utility.
- Partial evidence
- Its own public description names part of utility, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name utility. 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 626 utility worldwide
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Utility worldwide at a glance
As of Sep 19, 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 utility, 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
- 7 countries, largest first: Germany, the United States, Italy, Brazil, Switzerland, the United Kingdom, Canada. Country and city lists for utility are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “utility”. 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 utility), 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 utility, 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, 33,595 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.
Utility by location
7 lists · largest firstEvery Utility 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 utility, 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 utility are there worldwide?
RevenueBase identified 626 utility 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?
Xcel Energy, headquartered in Minneapolis, tops this list with the largest team on record.
Which country has the most utility?
Germany leads with 233 companies, followed by the United States (166) and Italy (64). Every utility list by country and city is linked on this page.
Which city has the most utility?
Sao Paulo leads with 12 headquartered companies, followed by London (6) and Houston (5).
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 33,595 verified decision-maker contacts tracked across these 626 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.