Company lists · Data refreshed November 2026
Top 25 Independent system operators worldwide
RevenueBase identified 305 company matches for independent system operators worldwide as of November 2026 and tracks 114,268 professional contacts across them, including 40,732 with verified work emails. The United States is the largest market and New Delhi the largest hub.
This list covers company matches for independent 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 independent 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 independent system operators worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 | |||||
| 2 | 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 | |||||
| 3 | 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 | |||||
| 4 | 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 | |||||
| 5 | 2,697 contacts → | ||||
Exact match “TenneT is a leading European grid operator.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 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 | |||||
| 7 | 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 | |||||
| 8 | 1,845 contacts → | ||||
Exact match “AEMO is responsible for operating Australia’s largest gas and electricity markets and power systems in the best interests of Australian energy consumers.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 1,794 contacts → | ||||
Exact match “La Compagnie Ivoirienne d’Électricité (CIE) est un opérateur privé lié à l’État de Côte d’Ivoire par une convention de concession depuis 1990.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 1,794 contacts → | ||||
Exact match “We own and operate safe, sustainable, economic and reliable transmission networks that connect generation plants to distribution companies and other customers.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 1,778 contacts → | ||||
Exact match “Statnett eier og driver hovedparten av sentralnettet, som kan beskrives som riksveiene i norsk strømforsyning.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 1,665 contacts → | ||||
Exact match “Ceylon Electricity Board is a body corporate established on the 1st November 1969 under the Act of Parliament No.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 1,556 contacts → | ||||
Exact match “From electric vehicles to renewables, we’re looking at electricity in a whole new way- because transmission is the key to unlocking our energy future.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 1,492 contacts → | ||||
Exact match “Pampa Energía S.A.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 1,469 contacts → | ||||
Exact match “Senelec est une société anonyme à capitaux publics majoritaires, concessionnaire de la production, du transport, de la distribution et de la vente de l’énergie électrique mais…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 1,372 contacts → | ||||
Exact match “O Operador Nacional do Sistema Elétrico (ONS) é o órgão responsável pela coordenação e controle da operação das instalações de geração e transmissão de energia elétrica no Sistema…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 1,291 contacts → | ||||
Exact match “MISO is the electric grid operator for the central United States.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 1,214 contacts → | ||||
Exact match “Nebraska Public Power District is a public corporation and political subdivision of the state of Nebraska.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 1,194 contacts → | ||||
Exact match “Secure electricity grids are the prerequisite for a reliable energy supply and the basis for a functioning economy and society.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 1,107 contacts → | ||||
Exact match “Red Eléctrica fue la primera empresa en el mundo dedicada en exclusividad al transporte de electricidad y a la operación de sistemas eléctricos.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 1,090 contacts → | ||||
Exact match “PJM Interconnection manages the high-voltage electric system that provides power to 67 million people in all or parts of 13 states and the District of Columbia.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 1,081 contacts → | ||||
Exact match “The Electric Reliability Council of Texas (ERCOT) manages the flow of electric power to 27 million Texas customers - representing about 90 percent of the state's electric load.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 1,067 contacts → | ||||
Exact match “As part of Nigeria’s broader power sector reforms in the early the Federal Government, under the leadership of former President Olusegun Obasanjo, sought to address the nation’s…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 967 contacts → | ||||
Exact match “Transelec’s mission is to be a leader in the development of the national electricity system, expanding transmission services in a sustainable and efficient manner, and profitably…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 900 contacts → | ||||
Exact match “The California Independent System Operator (ISO) manages the flow of electricity across the high-voltage, long-distance power lines that make up 80 percent of California's power…” 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 “independent 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 305 independent system operators worldwide
See the full list, filter by size, metro and specialty, and access 40,732 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Independent 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 independent system operators are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “independent 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 40,732 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.
Independent system operators by location
1 lists · largest firstEvery Independent 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 “independent system operators”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many independent system operators are there worldwide?
RevenueBase identified 305 company matches for independent 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?
Enedis tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most independent system operators?
The United States leads with 55 companies. Every independent system operators list by country and city is linked on this page.
Which city has the most independent system operators?
New Delhi leads with 8 company records, followed by Sao Paulo (6) and Houston (4).
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 40,732 professional contacts with verified work emails tracked across these 305 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 305 independent 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 independent 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 305 matching company records for independent system operators worldwide, with 114,268 tracked contacts and 40,732 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 independent 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 |  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. | |||||
| 2 |  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. | |||||
| 3 |  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. | |||||
| 4 |  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. | |||||
| 5 |  Tennet Germanytennet.euHQ: Bayreuth, GermanyReported employees: 5,001-10,000 | Bayreuth, Germany | 5,001-10,000 | Exact match | 2,697 contacts → |
“TenneT is a leading European grid operator.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  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. | |||||
| 7 |  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. | |||||
| 8 |  Australian Energy Market Operator Aemoaemo.com.auHQ: Melbourne, AustraliaReported employees: 1,001-5,000 | Melbourne, Australia | 1,001-5,000 | Exact match | 1,845 contacts → |
“AEMO is responsible for operating Australia’s largest gas and electricity markets and power systems in the best interests of Australian energy consumers.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | HQ: Abidjan, Cote d'IvoireReported employees: 1,001-5,000 | Abidjan, Cote d'Ivoire | 1,001-5,000 | Exact match | 1,794 contacts → |
“La Compagnie Ivoirienne d’Électricité (CIE) est un opérateur privé lié à l’État de Côte d’Ivoire par une convention de concession depuis 1990.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Taqa Transmissiontaqatransmission.comHQ: Abu Dhabi, United Arab EmiratesReported employees: 1,001-5,000 | Abu Dhabi, United Arab Emirates | 1,001-5,000 | Exact match | 1,794 contacts → |
“We own and operate safe, sustainable, economic and reliable transmission networks that connect generation plants to distribution companies and other customers.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Statnett SFstatnett.noHQ: Oslo, NorwayReported employees: 1,001-5,000 | Oslo, Norway | 1,001-5,000 | Exact match | 1,778 contacts → |
“Statnett eier og driver hovedparten av sentralnettet, som kan beskrives som riksveiene i norsk strømforsyning.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | HQ: Colombo, Sri LankaReported employees: 10001+ | Colombo, Sri Lanka | 10001+ | Exact match | 1,665 contacts → |
“Ceylon Electricity Board is a body corporate established on the 1st November 1969 under the Act of Parliament No.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  ITC Holdings Corpitc-holdings.comHQ: Novi, MI, United StatesReported employees: 501-1,000 | Novi, MI, United States | 501-1,000 | Exact match | 1,556 contacts → |
“From electric vehicles to renewables, we’re looking at electricity in a whole new way- because transmission is the key to unlocking our energy future.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Pampa Energiapampa.comHQ: Caba, IndiaReported employees: 5,001-10,000 | Caba, India | 5,001-10,000 | Exact match | 1,492 contacts → |
“Pampa Energía S.A.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Senelecsenelec.snHQ: United StatesReported employees: 1,001-5,000 | United States | 1,001-5,000 | Exact match | 1,469 contacts → |
“Senelec est une société anonyme à capitaux publics majoritaires, concessionnaire de la production, du transport, de la distribution et de la vente de l’énergie électrique mais…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  ONSons.org.brHQ: Rio De Janeiro, BrazilReported employees: 501-1,000 | Rio De Janeiro, Brazil | 501-1,000 | Exact match | 1,372 contacts → |
“O Operador Nacional do Sistema Elétrico (ONS) é o órgão responsável pela coordenação e controle da operação das instalações de geração e transmissão de energia elétrica no Sistema…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Midcontinent Independent System Operator Misomisoenergy.orgHQ: Carmel, AR, United StatesReported employees: 1,001-5,000 | Carmel, AR, United States | 1,001-5,000 | Exact match | 1,291 contacts → |
“MISO is the electric grid operator for the central United States.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Nebraska Public Power Districtnppd.comHQ: United StatesReported employees: 1,001-5,000 | United States | 1,001-5,000 | Exact match | 1,214 contacts → |
“Nebraska Public Power District is a public corporation and political subdivision of the state of Nebraska.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Transnetbw Gmbhtransnetbw.deHQ: Stuttgart, GermanyReported employees: 1,001-5,000 | Stuttgart, Germany | 1,001-5,000 | Exact match | 1,194 contacts → |
“Secure electricity grids are the prerequisite for a reliable energy supply and the basis for a functioning economy and society.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  RED Eléctricaree.esHQ: Madrid, SpainReported employees: 1,001-5,000 | Madrid, Spain | 1,001-5,000 | Exact match | 1,107 contacts → |
“Red Eléctrica fue la primera empresa en el mundo dedicada en exclusividad al transporte de electricidad y a la operación de sistemas eléctricos.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  PJM Interconnectionpjm.comHQ: Audubon, PA, United StatesReported employees: 501-1,000 | Audubon, PA, United States | 501-1,000 | Exact match | 1,090 contacts → |
“PJM Interconnection manages the high-voltage electric system that provides power to 67 million people in all or parts of 13 states and the District of Columbia.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  ERCOTercot.comHQ: Taylor, TX, United StatesReported employees: 501-1,000 | Taylor, TX, United States | 501-1,000 | Exact match | 1,081 contacts → |
“The Electric Reliability Council of Texas (ERCOT) manages the flow of electric power to 27 million Texas customers - representing about 90 percent of the state's electric load.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Transmission Company Of Nigeriatcn.org.ngHQ: Maitama, NigeriaReported employees: 1,001-5,000 | Maitama, Nigeria | 1,001-5,000 | Exact match | 1,067 contacts → |
“As part of Nigeria’s broader power sector reforms in the early the Federal Government, under the leadership of former President Olusegun Obasanjo, sought to address the nation’s…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Transelec S.Atranselec.clHQ: Santiago, ChileReported employees: 501-1,000 | Santiago, Chile | 501-1,000 | Exact match | 967 contacts → |
“Transelec’s mission is to be a leader in the development of the national electricity system, expanding transmission services in a sustainable and efficient manner, and profitably…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  California ISOcaiso.comHQ: Folsom, CA, United StatesReported employees: 501-1,000 | Folsom, CA, United States | 501-1,000 | Exact match | 900 contacts → |
“The California Independent System Operator (ISO) manages the flow of electricity across the high-voltage, long-distance power lines that make up 80 percent of California's power…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 305 company matches
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Independent 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
302 records in the displayed employee bands.
3 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 305 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 ↗
Independent system operators by location
1 lists · largest firstEvery Independent 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 independent 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 independent system operators did RevenueBase find worldwide?
The saved snapshot records 305 matching company records, 114,268 tracked contacts and 40,732 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 independent system operators worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/independent-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 independent system operators worldwide
RevenueBase records 305 matching company records for independent system operators worldwide, with 114,268 tracked contacts and 40,732 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 independent 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 | 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. | |||||
| 2 | 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. | |||||
| 3 | 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. | |||||
| 4 | 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. | |||||
| 5 | Tennet Germanytennet.eu HQ: Bayreuth, GermanyReported employees: 5,001-10,000 | Bayreuth, Germany | 5,001-10,000 | Exact match | 2,697 contacts → |
“TenneT is a leading European grid operator.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | 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. | |||||
| 7 | 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. | |||||
| 8 | Australian Energy Market Operator Aemoaemo.com.au HQ: Melbourne, AustraliaReported employees: 1,001-5,000 | Melbourne, Australia | 1,001-5,000 | Exact match | 1,845 contacts → |
“AEMO is responsible for operating Australia’s largest gas and electricity markets and power systems in the best interests of Australian energy consumers.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | HQ: Abidjan, Cote d'IvoireReported employees: 1,001-5,000 | Abidjan, Cote d'Ivoire | 1,001-5,000 | Exact match | 1,794 contacts → |
“La Compagnie Ivoirienne d’Électricité (CIE) est un opérateur privé lié à l’État de Côte d’Ivoire par une convention de concession depuis 1990.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Taqa Transmissiontaqatransmission.com HQ: Abu Dhabi, United Arab EmiratesReported employees: 1,001-5,000 | Abu Dhabi, United Arab Emirates | 1,001-5,000 | Exact match | 1,794 contacts → |
“We own and operate safe, sustainable, economic and reliable transmission networks that connect generation plants to distribution companies and other customers.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Statnett SFstatnett.no HQ: Oslo, NorwayReported employees: 1,001-5,000 | Oslo, Norway | 1,001-5,000 | Exact match | 1,778 contacts → |
“Statnett eier og driver hovedparten av sentralnettet, som kan beskrives som riksveiene i norsk strømforsyning.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | HQ: Colombo, Sri LankaReported employees: 10001+ | Colombo, Sri Lanka | 10001+ | Exact match | 1,665 contacts → |
“Ceylon Electricity Board is a body corporate established on the 1st November 1969 under the Act of Parliament No.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | ITC Holdings Corpitc-holdings.com HQ: Novi, MI, United StatesReported employees: 501-1,000 | Novi, MI, United States | 501-1,000 | Exact match | 1,556 contacts → |
“From electric vehicles to renewables, we’re looking at electricity in a whole new way- because transmission is the key to unlocking our energy future.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Pampa Energiapampa.com HQ: Caba, IndiaReported employees: 5,001-10,000 | Caba, India | 5,001-10,000 | Exact match | 1,492 contacts → |
“Pampa Energía S.A.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Senelecsenelec.sn HQ: United StatesReported employees: 1,001-5,000 | United States | 1,001-5,000 | Exact match | 1,469 contacts → |
“Senelec est une société anonyme à capitaux publics majoritaires, concessionnaire de la production, du transport, de la distribution et de la vente de l’énergie électrique mais…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | ONSons.org.br HQ: Rio De Janeiro, BrazilReported employees: 501-1,000 | Rio De Janeiro, Brazil | 501-1,000 | Exact match | 1,372 contacts → |
“O Operador Nacional do Sistema Elétrico (ONS) é o órgão responsável pela coordenação e controle da operação das instalações de geração e transmissão de energia elétrica no Sistema…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Midcontinent Independent System Operator Misomisoenergy.org HQ: Carmel, AR, United StatesReported employees: 1,001-5,000 | Carmel, AR, United States | 1,001-5,000 | Exact match | 1,291 contacts → |
“MISO is the electric grid operator for the central United States.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Nebraska Public Power Districtnppd.com HQ: United StatesReported employees: 1,001-5,000 | United States | 1,001-5,000 | Exact match | 1,214 contacts → |
“Nebraska Public Power District is a public corporation and political subdivision of the state of Nebraska.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Transnetbw Gmbhtransnetbw.de HQ: Stuttgart, GermanyReported employees: 1,001-5,000 | Stuttgart, Germany | 1,001-5,000 | Exact match | 1,194 contacts → |
“Secure electricity grids are the prerequisite for a reliable energy supply and the basis for a functioning economy and society.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | RED Eléctricaree.es HQ: Madrid, SpainReported employees: 1,001-5,000 | Madrid, Spain | 1,001-5,000 | Exact match | 1,107 contacts → |
“Red Eléctrica fue la primera empresa en el mundo dedicada en exclusividad al transporte de electricidad y a la operación de sistemas eléctricos.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | PJM Interconnectionpjm.com HQ: Audubon, PA, United StatesReported employees: 501-1,000 | Audubon, PA, United States | 501-1,000 | Exact match | 1,090 contacts → |
“PJM Interconnection manages the high-voltage electric system that provides power to 67 million people in all or parts of 13 states and the District of Columbia.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | ERCOTercot.com HQ: Taylor, TX, United StatesReported employees: 501-1,000 | Taylor, TX, United States | 501-1,000 | Exact match | 1,081 contacts → |
“The Electric Reliability Council of Texas (ERCOT) manages the flow of electric power to 27 million Texas customers - representing about 90 percent of the state's electric load.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Transmission Company Of Nigeriatcn.org.ng HQ: Maitama, NigeriaReported employees: 1,001-5,000 | Maitama, Nigeria | 1,001-5,000 | Exact match | 1,067 contacts → |
“As part of Nigeria’s broader power sector reforms in the early the Federal Government, under the leadership of former President Olusegun Obasanjo, sought to address the nation’s…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Transelec S.Atranselec.cl HQ: Santiago, ChileReported employees: 501-1,000 | Santiago, Chile | 501-1,000 | Exact match | 967 contacts → |
“Transelec’s mission is to be a leader in the development of the national electricity system, expanding transmission services in a sustainable and efficient manner, and profitably…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | California ISOcaiso.com HQ: Folsom, CA, United StatesReported employees: 501-1,000 | Folsom, CA, United States | 501-1,000 | Exact match | 900 contacts → |
“The California Independent System Operator (ISO) manages the flow of electricity across the high-voltage, long-distance power lines that make up 80 percent of California's power…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Independent 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
302 records in the displayed employee bands.
3 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 305 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 ↗
Independent system operators by location
1 lists · largest firstEvery Independent 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 independent 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 independent system operators did RevenueBase find worldwide?
The saved snapshot records 305 matching company records, 114,268 tracked contacts and 40,732 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 independent system operators worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/independent-system-operators.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗