Company lists · Data refreshed September 2026

Top 25 Gas and electric companies UK worldwide

RevenueBase identified 1,212 company matches for gas and electric companies UK worldwide as of September 2026 and tracks 228,860 professional contacts across them, including 72,497 with verified work emails. Germany is the largest market and London the largest hub.

This list covers company matches for gas and electric companies UK worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 2026. Country and city lists for gas and electric companies UK follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 20, 2026 How this list was built
1,212Companies
228,860Contacts tracked
72,497Verified emails
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The 25 largest gas and electric companies UK worldwide

Ranked by team size
Top 25 of 1,212 company matches for gas and electric companies UK worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchCharlotte, NC, United StatesHQ recorded Sep 20, 202610001+24,500 contacts →

Exact match

“Duke Energy, a Fortune 150 company headquartered in Charlotte, N.C, is one of America’s largest energy holding companies.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Sep 20, 202610001+24,403 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchNew Orleans, LA, United StatesHQ recorded Sep 20, 202610001+11,015 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchChicago, IL, United StatesHQ recorded Sep 20, 202610001+7,790 contacts →

Exact match

“Exelon Corporation (Nasdaq: EXC) is one of the nation’s largest utility companies, serving more than 10 million customers through six fully regulated utilities.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchNewark, NJ, United StatesHQ recorded Sep 20, 202610001+7,446 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchHouston, TX, United StatesHQ recorded Sep 20, 20265,001-10,0006,576 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchAtlanta, GA, United StatesHQ recorded Sep 20, 202610001+5,036 contacts →

Exact match

“High reliability, low prices and high customer satisfaction are cornerstones of our customer commitment, but it doesn't end there.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchMerrillville, IN, United StatesHQ recorded Sep 20, 20265,001-10,0004,359 contacts →

Exact match

“NiSource (NYSE: NI) helps energize the lives of its nearly 4 million natural gas and electric customers across six states.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchBarcelona, SpainHQ recorded Sep 20, 202610001+3,951 contacts →

Exact match

“Gas Natural Fenosa is a leading multi-national in the gas and power sectors.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchAllentown, PA, United StatesHQ recorded Sep 20, 20265,001-10,0003,513 contacts →

Exact match

“PPL Corporation’s family of companies provide electricity and natural gas to power our customers’ lives.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchJuno Beach, FL, United StatesHQ recorded Sep 20, 202610001+3,478 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchWinnipeg, MB, CanadaHQ recorded Sep 20, 20261,001-5,0003,158 contacts →

Exact match

“As Manitoba’s major energy utility, we: • Generate and distribute electricity around the province.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchSwindon, United KingdomHQ recorded Sep 20, 202610001+2,679 contacts →

Exact match

“npower is one of Britain’s leading energy companies, serving domestic and business customers with electricity and gas.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchEdmonton, AB, CanadaHQ recorded Sep 20, 20261,001-5,0002,511 contacts →

Exact match

“Clean water, reliable electricity, drainage services and natural gas are at the heart of what we do.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchTunis, TunisiaHQ recorded Sep 20, 202610001+2,475 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchMünchen, GermanyHQ recorded Sep 20, 202610001+2,431 contacts →

Exact match

“With its energy supply, outstanding services, integrated local public transport system and many public swimming pools, Stadtwerke München (SWM) makes an enormous contribution to…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchHaymarket, AustraliaHQ recorded Sep 20, 20261,001-5,0002,341 contacts →

Exact match

“Ausgrid is Australia's largest distributor of electricity, provided products and services to 1.7 million customers in Sydney, the Hunter and the Central Coast.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchHorley, United KingdomHQ recorded Sep 20, 20261,001-5,0002,315 contacts →

Exact match

“SGN manages the network which distributes natural and green gas to approximately six million homes and businesses across Scotland and southern England.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchPhiladelphia, United StatesHQ recorded Sep 20, 20261,001-5,0002,183 contacts →

Exact match

“Advancing smart energy to provide safe, reliable, affordable and clean energy and energy services for our customers and the communities we serve.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchLas Vegas, NV, United StatesHQ recorded Sep 20, 20261,001-5,0002,110 contacts →

Exact match

“Headquartered in Las Vegas, Nevada, NV Energy, Inc.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchRapid City, SD, United StatesHQ recorded Sep 20, 20261,001-5,0001,755 contacts →

Exact match

“We are a growth-oriented, vertically integrated energy company with a mission of improving life with energy and a vision to be the energy partner of choice.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchSouthbank, AustraliaHQ recorded Sep 20, 20261,001-5,0001,731 contacts →

Exact match

“We're Australia's largest diversified energy networks business connecting communities with reliable, affordable and sustainable energy.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchLouisville, KY, United StatesHQ recorded Sep 20, 20261,001-5,0001,663 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchSão Paulo, BrazilHQ recorded Sep 20, 20261,001-5,0001,611 contacts →

Exact match

“Founded in 1872, Comgás has seen many changes before being what it is today, in over 140 years of history.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Sep 20, 20261,001-5,0001,512 contacts →

Exact match

“At E.ON Next, we make new energy work.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 1,212 gas and electric companies UK worldwide

See the full list, filter by size, metro and specialty, and access 72,497 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Gas and electric companies UK worldwide at a glance

As of Sep 20, 2026
31.7%Verified-email coverage
188.8Average contacts per company
11-50Median size (employees)
2.1%Largest-city concentration · London
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
392
11-50
329
51-200
216
201-500
97
501-1,000
53
1,001-5,000
79
5,001-10,000
16
10001+
20

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for gas and electric companies UK are linked below.
What qualifies
Company records worldwide whose business descriptions match “gas and electric companies UK” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 72,497 professional contacts with verified work emails across the full matched dataset. 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 20, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Gas and electric companies UK by location

5 lists · largest first

Every Gas and electric companies UK 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 SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “gas and electric companies UK”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many gas and electric companies UK are there worldwide?

RevenueBase identified 1,212 company matches for gas and electric companies UK worldwide as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Duke Energy Corporation tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most gas and electric companies UK?

Germany leads with 227 companies, followed by the United Kingdom (216) and Italy (147). Every gas and electric companies UK list by country and city is linked on this page.

Which city has the most gas and electric companies UK?

London leads with 26 company records, followed by Manchester (15) and Sao Paulo (10).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 72,497 professional contacts with verified work emails tracked across these 1,212 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 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 SmartSearch, 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.