Company lists · Data refreshed November 2026
Top 25 Transmission system operators worldwide
RevenueBase identified 512 company matches for transmission system operators worldwide as of November 2026 and tracks 243,832 professional contacts across them, including 87,829 with verified work emails. Germany is the largest market and Rio De Janeiro the largest hub.
This list covers company matches for transmission system operators 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 November 6, 2026. Country and city lists for transmission system operators 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.
The 25 largest transmission system operators worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 26,526 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 21,961 contacts → | ||||
Exact match “Enedis est le gestionnaire du réseau public de distribution d’électricité sur 95 % du territoire français continental.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 11,678 contacts → | ||||
Exact match “Our team at American Electric Power is committed to improving our customers' lives with reliable, affordable power.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 9,891 contacts → | ||||
Exact match “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.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 7,740 contacts → | ||||
Exact match “Chaque jour, nous faisons du réseau électrique le moteur d’une France décarbonée en transportant l’électricité à chaque seconde et en veillant en permanence à son équilibre…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 7,064 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 6,251 contacts → | ||||
Exact match “Power Grid Corporation of India Limited (POWERGRID), is a 'Maharatna' Company operating under Ministry of Power, is engaged in power transmission business.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 5,955 contacts → | ||||
Exact match “Torrent Power is one of the leading brands in the Indian power sector.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 4,256 contacts → | ||||
Exact match “We are the Europe's largest independent electricity transmission system operator, representing an Italian excellence with around professionals dedicated daily to the safety of the…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 3,856 contacts → | ||||
Exact match “Oncor Electric Delivery Company LLC, headquartered in Dallas, is a regulated electricity distribution and transmission business that uses superior asset management skills to…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 3,351 contacts → | ||||
Exact match “The Israel Electric Corporation (IEC) is a public, government company, 99.85% of its shares are government-owned and traded on the Tel-Aviv and Singapore stock exchange.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 3,261 contacts → | ||||
Exact match “TenneT houdt Nederland aan.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 2,813 contacts → | ||||
Exact match “NEW WINDS IN THE ENERGYSECTOR The energy sector is undergoing a large-scale transformation because of national and international agreements to convert to climate-neutral societies.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 2,712 contacts → | ||||
Exact match “Somos la mayor distribuidora de energía eléctrica de la Argentina en términos de cantidad de clientes y electricidad vendida.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 2,586 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 2,512 contacts → | ||||
Exact match “Energy Queensland formed in 2016 with the merger of Ergon Energy and Energex, creating a single energy company that powers communities from Tweed Heads up to the Torres Strait and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 2,511 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 2,417 contacts → | ||||
Exact match “Samen slimmer met energie Energie is er altijd.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 2,148 contacts → | ||||
Exact match “One of the top three global players in the transmission and distribution of energy, AREVA T&D offers solutions to bring electricity from the source onto the power network.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 2,057 contacts → | ||||
Exact match “Korea Electric Power Corporation (“KEPCO”) is a state-owned, integrated electric utility company in the Republic of Korea, whose six generation subsidiaries produce the majority…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 2,027 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 1,936 contacts → | ||||
Exact match “We’ve ensured the smooth operation of over 11,517 km of high-voltage transmission lines and 136 substations and switching stations across NSW and the ACT, with interconnections to…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 1,887 contacts → | ||||
Exact match “We are South Australia's electricity distributor, and we've been part of this State's story for a long time.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 1,874 contacts → | ||||
Exact match “Das Übertragungsnetz von Amprion transportiert Strom für rund 29 Millionen Menschen in einem Gebiet von der Nordsee bis zu den Alpen.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 1,798 contacts → | ||||
Exact match “We transmit, distribute and connect electricity to and from 3.5 million homes and businesses over our network, 24 hours a day, every day of the year.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “transmission system operators”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 512 transmission system operators worldwide
See the full list, filter by size, metro and specialty, and access 87,829 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Transmission system operators worldwide at a glance
As of Nov 6, 2026Companies by employee count
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 transmission system operators are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “transmission system operators” 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 87,829 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 November 6, 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.
Transmission system operators by location
4 lists · largest firstEvery Transmission system operators 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 “transmission system operators”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many transmission system operators are there worldwide?
RevenueBase identified 512 company matches for transmission system operators worldwide as of November 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?
National Grid tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most transmission system operators?
Germany leads with 44 companies, followed by India (38) and the United States (30). Every transmission system operators list by country and city is linked on this page.
Which city has the most transmission system operators?
Rio De Janeiro leads with 10 company records, followed by Arnhem (8) and Sao Paulo (8).
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 87,829 professional contacts with verified work emails tracked across these 512 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 November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 512 transmission system operators worldwide. Start with a free account, no credit card.
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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.
More company lists
Company intelligence · public preview
Top 25 transmission system operators worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 512 matching company records for transmission system operators worldwide, with 243,832 tracked contacts and 87,829 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 transmission system operators worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  National Gridnationalgrid.comHQ: London, United KingdomReported employees: 10001+ | London, United Kingdom | 10001+ | Exact match | 26,526 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Enedisenedis.frHQ: Puteaux, FranceReported employees: 10001+ | Puteaux, France | 10001+ | Exact match | 21,961 contacts → |
“Enedis est le gestionnaire du réseau public de distribution d’électricité sur 95 % du territoire français continental.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  American Electric Poweraep.comHQ: Columbus, OH, United StatesReported employees: 10001+ | Columbus, OH, United States | 10001+ | Exact match | 11,678 contacts → |
“Our team at American Electric Power is committed to improving our customers' lives with reliable, affordable power.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Tata Powertatapower.comHQ: Mumbai, IndiaReported employees: 10001+ | Mumbai, India | 10001+ | Exact match | 9,891 contacts → |
“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.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Réseau DE Transport D'électricitérte-france.comHQ: La Defense Cedex, FranceReported employees: 10001+ | La Defense Cedex, France | 10001+ | Exact match | 7,740 contacts → |
“Chaque jour, nous faisons du réseau électrique le moteur d’une France décarbonée en transportant l’électricité à chaque seconde et en veillant en permanence à son équilibre…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Firstenergyfirstenergycorp.comHQ: Akron, OH, United StatesReported employees: 10001+ | Akron, OH, United States | 10001+ | Exact match | 7,064 contacts → |
“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…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Power Grid Corporation Of India Limitedpowergrid.inHQ: Gurgaon, IndiaReported employees: 5,001-10,000 | Gurgaon, India | 5,001-10,000 | Exact match | 6,251 contacts → |
“Power Grid Corporation of India Limited (POWERGRID), is a 'Maharatna' Company operating under Ministry of Power, is engaged in power transmission business.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Torrent Powertorrentpower.comHQ: IndiaReported employees: 5,001-10,000 | India | 5,001-10,000 | Exact match | 5,955 contacts → |
“Torrent Power is one of the leading brands in the Indian power sector.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Terna SPAterna.itHQ: Rome, ItalyReported employees: 5,001-10,000 | Rome, Italy | 5,001-10,000 | Exact match | 4,256 contacts → |
“We are the Europe's largest independent electricity transmission system operator, representing an Italian excellence with around professionals dedicated daily to the safety of the…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Oncor Electric Deliveryoncor.comHQ: Dallas, TX, United StatesReported employees: 1,001-5,000 | Dallas, TX, United States | 1,001-5,000 | Exact match | 3,856 contacts → |
“Oncor Electric Delivery Company LLC, headquartered in Dallas, is a regulated electricity distribution and transmission business that uses superior asset management skills to…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  IECiec.co.ilHQ: Haifa, IsraelReported employees: 10001+ | Haifa, Israel | 10001+ | Exact match | 3,351 contacts → |
“The Israel Electric Corporation (IEC) is a public, government company, 99.85% of its shares are government-owned and traded on the Tel-Aviv and Singapore stock exchange.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Tennet Netherlandstennet.euHQ: Arnhem, NetherlandsReported employees: 5,001-10,000 | Arnhem, Netherlands | 5,001-10,000 | Exact match | 3,261 contacts → |
“TenneT houdt Nederland aan.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Energinetenerginet.dkHQ: Fredericia, DenmarkReported employees: 1,001-5,000 | Fredericia, Denmark | 1,001-5,000 | Exact match | 2,813 contacts → |
“NEW WINDS IN THE ENERGYSECTOR The energy sector is undergoing a large-scale transformation because of national and international agreements to convert to climate-neutral societies.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Edenoredenor.comHQ: Buenos Aires, ArgentinaReported employees: 1,001-5,000 | Buenos Aires, Argentina | 1,001-5,000 | Exact match | 2,712 contacts → |
“Somos la mayor distribuidora de energía eléctrica de la Argentina en términos de cantidad de clientes y electricidad vendida.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | HQ: Tunis, TunisiaReported employees: 10001+ | Tunis, Tunisia | 10001+ | Exact match | 2,586 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Energy Queenslandenergyq.com.auHQ: Newstead, AustraliaReported employees: 5,001-10,000 | Newstead, Australia | 5,001-10,000 | Exact match | 2,512 contacts → |
“Energy Queensland formed in 2016 with the merger of Ergon Energy and Energex, creating a single energy company that powers communities from Tweed Heads up to the Torres Strait and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Ausgridausgrid.com.auHQ: Haymarket, AustraliaReported employees: 1,001-5,000 | Haymarket, Australia | 1,001-5,000 | Exact match | 2,511 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Lianderliander.nlHQ: Arnhem, NetherlandsReported employees: 5,001-10,000 | Arnhem, Netherlands | 5,001-10,000 | Exact match | 2,417 contacts → |
“Samen slimmer met energie Energie is er altijd.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Areva T&dalstom.comHQ: 92084 Paris - La Défense, FranceReported employees: 10001+ | 92084 Paris - La Défense, France | 10001+ | Exact match | 2,148 contacts → |
“One of the top three global players in the transmission and distribution of energy, AREVA T&D offers solutions to bring electricity from the source onto the power network.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Korea Electric Power Corporation Kepcokepco.co.krHQ: South KoreaReported employees: 10001+ | South Korea | 10001+ | Exact match | 2,057 contacts → |
“Korea Electric Power Corporation (“KEPCO”) is a state-owned, integrated electric utility company in the Republic of Korea, whose six generation subsidiaries produce the majority…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Ausnetausnetservices.com.auHQ: Southbank, AustraliaReported employees: 1,001-5,000 | Southbank, Australia | 1,001-5,000 | Exact match | 2,027 contacts → |
“We're Australia's largest diversified energy networks business connecting communities with reliable, affordable and sustainable energy.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Transgridtransgrid.com.auHQ: Sydney, AustraliaReported employees: 1,001-5,000 | Sydney, Australia | 1,001-5,000 | Exact match | 1,936 contacts → |
“We’ve ensured the smooth operation of over 11,517 km of high-voltage transmission lines and 136 substations and switching stations across NSW and the ACT, with interconnections to…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  SA Power Networkssapowernetworks.com.auHQ: Keswick, CanadaReported employees: 1,001-5,000 | Keswick, Canada | 1,001-5,000 | Exact match | 1,887 contacts → |
“We are South Australia's electricity distributor, and we've been part of this State's story for a long time.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Amprion Gmbhamprion.netHQ: Dortmund, GermanyReported employees: 1,001-5,000 | Dortmund, Germany | 1,001-5,000 | Exact match | 1,874 contacts → |
“Das Übertragungsnetz von Amprion transportiert Strom für rund 29 Millionen Menschen in einem Gebiet von der Nordsee bis zu den Alpen.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  SP Energy Networksspenergynetworks.co.ukHQ: Glasgow, United KingdomReported employees: 1,001-5,000 | Glasgow, United Kingdom | 1,001-5,000 | Exact match | 1,798 contacts → |
“We transmit, distribute and connect electricity to and from 3.5 million homes and businesses over our network, 24 hours a day, every day of the year.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 512 company matches
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Transmission system operators: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
501 records in the displayed employee bands.
11 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 512 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Transmission system operators by location
4 lists · largest firstEvery Transmission system operators list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for transmission system operators?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many transmission system operators did RevenueBase find worldwide?
The saved snapshot records 512 matching company records, 243,832 tracked contacts and 87,829 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
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Cite this list
RevenueBase Data Team. Top 25 transmission system operators worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/transmission-system-operators.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 transmission system operators worldwide
RevenueBase records 512 matching company records for transmission system operators worldwide, with 243,832 tracked contacts and 87,829 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 transmission system operators worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | National Gridnationalgrid.com HQ: London, United KingdomReported employees: 10001+ | London, United Kingdom | 10001+ | Exact match | 26,526 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Enedisenedis.fr HQ: Puteaux, FranceReported employees: 10001+ | Puteaux, France | 10001+ | Exact match | 21,961 contacts → |
“Enedis est le gestionnaire du réseau public de distribution d’électricité sur 95 % du territoire français continental.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | American Electric Poweraep.com HQ: Columbus, OH, United StatesReported employees: 10001+ | Columbus, OH, United States | 10001+ | Exact match | 11,678 contacts → |
“Our team at American Electric Power is committed to improving our customers' lives with reliable, affordable power.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Tata Powertatapower.com HQ: Mumbai, IndiaReported employees: 10001+ | Mumbai, India | 10001+ | Exact match | 9,891 contacts → |
“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.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Réseau DE Transport D'électricitérte-france.com HQ: La Defense Cedex, FranceReported employees: 10001+ | La Defense Cedex, France | 10001+ | Exact match | 7,740 contacts → |
“Chaque jour, nous faisons du réseau électrique le moteur d’une France décarbonée en transportant l’électricité à chaque seconde et en veillant en permanence à son équilibre…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Firstenergyfirstenergycorp.com HQ: Akron, OH, United StatesReported employees: 10001+ | Akron, OH, United States | 10001+ | Exact match | 7,064 contacts → |
“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…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Power Grid Corporation Of India Limitedpowergrid.in HQ: Gurgaon, IndiaReported employees: 5,001-10,000 | Gurgaon, India | 5,001-10,000 | Exact match | 6,251 contacts → |
“Power Grid Corporation of India Limited (POWERGRID), is a 'Maharatna' Company operating under Ministry of Power, is engaged in power transmission business.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Torrent Powertorrentpower.com HQ: IndiaReported employees: 5,001-10,000 | India | 5,001-10,000 | Exact match | 5,955 contacts → |
“Torrent Power is one of the leading brands in the Indian power sector.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Terna SPAterna.it HQ: Rome, ItalyReported employees: 5,001-10,000 | Rome, Italy | 5,001-10,000 | Exact match | 4,256 contacts → |
“We are the Europe's largest independent electricity transmission system operator, representing an Italian excellence with around professionals dedicated daily to the safety of the…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Oncor Electric Deliveryoncor.com HQ: Dallas, TX, United StatesReported employees: 1,001-5,000 | Dallas, TX, United States | 1,001-5,000 | Exact match | 3,856 contacts → |
“Oncor Electric Delivery Company LLC, headquartered in Dallas, is a regulated electricity distribution and transmission business that uses superior asset management skills to…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | IECiec.co.il HQ: Haifa, IsraelReported employees: 10001+ | Haifa, Israel | 10001+ | Exact match | 3,351 contacts → |
“The Israel Electric Corporation (IEC) is a public, government company, 99.85% of its shares are government-owned and traded on the Tel-Aviv and Singapore stock exchange.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Tennet Netherlandstennet.eu HQ: Arnhem, NetherlandsReported employees: 5,001-10,000 | Arnhem, Netherlands | 5,001-10,000 | Exact match | 3,261 contacts → |
“TenneT houdt Nederland aan.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Energinetenerginet.dk HQ: Fredericia, DenmarkReported employees: 1,001-5,000 | Fredericia, Denmark | 1,001-5,000 | Exact match | 2,813 contacts → |
“NEW WINDS IN THE ENERGYSECTOR The energy sector is undergoing a large-scale transformation because of national and international agreements to convert to climate-neutral societies.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Edenoredenor.com HQ: Buenos Aires, ArgentinaReported employees: 1,001-5,000 | Buenos Aires, Argentina | 1,001-5,000 | Exact match | 2,712 contacts → |
“Somos la mayor distribuidora de energía eléctrica de la Argentina en términos de cantidad de clientes y electricidad vendida.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | HQ: Tunis, TunisiaReported employees: 10001+ | Tunis, Tunisia | 10001+ | Exact match | 2,586 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Energy Queenslandenergyq.com.au HQ: Newstead, AustraliaReported employees: 5,001-10,000 | Newstead, Australia | 5,001-10,000 | Exact match | 2,512 contacts → |
“Energy Queensland formed in 2016 with the merger of Ergon Energy and Energex, creating a single energy company that powers communities from Tweed Heads up to the Torres Strait and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Ausgridausgrid.com.au HQ: Haymarket, AustraliaReported employees: 1,001-5,000 | Haymarket, Australia | 1,001-5,000 | Exact match | 2,511 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Lianderliander.nl HQ: Arnhem, NetherlandsReported employees: 5,001-10,000 | Arnhem, Netherlands | 5,001-10,000 | Exact match | 2,417 contacts → |
“Samen slimmer met energie Energie is er altijd.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Areva T&dalstom.com HQ: 92084 Paris - La Défense, FranceReported employees: 10001+ | 92084 Paris - La Défense, France | 10001+ | Exact match | 2,148 contacts → |
“One of the top three global players in the transmission and distribution of energy, AREVA T&D offers solutions to bring electricity from the source onto the power network.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Korea Electric Power Corporation Kepcokepco.co.kr HQ: South KoreaReported employees: 10001+ | South Korea | 10001+ | Exact match | 2,057 contacts → |
“Korea Electric Power Corporation (“KEPCO”) is a state-owned, integrated electric utility company in the Republic of Korea, whose six generation subsidiaries produce the majority…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Ausnetausnetservices.com.au HQ: Southbank, AustraliaReported employees: 1,001-5,000 | Southbank, Australia | 1,001-5,000 | Exact match | 2,027 contacts → |
“We're Australia's largest diversified energy networks business connecting communities with reliable, affordable and sustainable energy.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Transgridtransgrid.com.au HQ: Sydney, AustraliaReported employees: 1,001-5,000 | Sydney, Australia | 1,001-5,000 | Exact match | 1,936 contacts → |
“We’ve ensured the smooth operation of over 11,517 km of high-voltage transmission lines and 136 substations and switching stations across NSW and the ACT, with interconnections to…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | SA Power Networkssapowernetworks.com.au HQ: Keswick, CanadaReported employees: 1,001-5,000 | Keswick, Canada | 1,001-5,000 | Exact match | 1,887 contacts → |
“We are South Australia's electricity distributor, and we've been part of this State's story for a long time.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Amprion Gmbhamprion.net HQ: Dortmund, GermanyReported employees: 1,001-5,000 | Dortmund, Germany | 1,001-5,000 | Exact match | 1,874 contacts → |
“Das Übertragungsnetz von Amprion transportiert Strom für rund 29 Millionen Menschen in einem Gebiet von der Nordsee bis zu den Alpen.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | SP Energy Networksspenergynetworks.co.uk HQ: Glasgow, United KingdomReported employees: 1,001-5,000 | Glasgow, United Kingdom | 1,001-5,000 | Exact match | 1,798 contacts → |
“We transmit, distribute and connect electricity to and from 3.5 million homes and businesses over our network, 24 hours a day, every day of the year.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Transmission system operators: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
501 records in the displayed employee bands.
11 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 512 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Transmission system operators by location
4 lists · largest firstEvery Transmission system operators list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for transmission system operators?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many transmission system operators did RevenueBase find worldwide?
The saved snapshot records 512 matching company records, 243,832 tracked contacts and 87,829 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 transmission system operators worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/transmission-system-operators.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗