Company lists · Data refreshed September 2026
Top 24 Utility transmission operators based in the United States
RevenueBase identified 37 utility transmission operators headquartered in the United States as of September 2026 and tracks 29,411 professional contacts across them, including 10,752 with verified work emails. Houston is the largest hub.
This list covers utility transmission operators headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 22, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 24 largest utility transmission operators based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 10,964 contacts → | ||||
Indirect evidence “Our team at American Electric Power is committed to improving our customers' lives with reliable, affordable power.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 2 | 6,434 contacts → | ||||
Partial evidence “We are a forward-thinking electric utility centered on integrity, powered by a diverse team of employees committed to making customers’ lives brighter, the environment better and…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 3 | 3,586 contacts → | ||||
Partial evidence “Oncor Electric Delivery Company LLC, headquartered in Dallas, is a regulated electricity distribution and transmission business that uses superior asset management skills to…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,486 contacts → | ||||
Partial evidence “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.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,215 contacts → | ||||
Partial evidence “MISO is the electric grid operator for the central United States.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,023 contacts → | ||||
Indirect evidence “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.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 7 | 917 contacts → | ||||
Indirect evidence “Reliant has deep Texas roots.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 8 | 847 contacts → | ||||
Partial evidence “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…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 9 | 811 contacts → | ||||
Indirect evidence “Working together to responsibly and economically keep the lights on today and in the future.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 10 | 723 contacts → | ||||
Indirect evidence “Keeping the power flowing reliably and at competitive prices to the homes, businesses, and industries across the six diverse states of New England is a complicated, demanding, and…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 11 | 678 contacts → | ||||
Indirect evidence “ATC is connecting you with a sustainable energy future.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 12 | 226 contacts → | ||||
Partial evidence “Texas-New Mexico Power is an electricity transmission and distribution service provider- We provide electricity to more than homes and businesses throughout Texas- We have about…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 13 | 93 contacts → | ||||
Indirect evidence “Alpha Generation manages and operates power generation facilities that are well positioned to provide reliable, secure, safe, and sustainable sources of power and meet the growing…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 14 | 83 contacts → | ||||
Partial evidence “Texas-based Wind Energy Transmission Texas, LLC,(WETT) is a regulated transmission provider in Texas.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 15 | 28 contacts → | ||||
Strong evidence “New York Transco is a New York-based, New York-focused developer, owner and operator of electric transmission systems that best serve customers, communities, and the environment.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 16 | 26 contacts → | ||||
Strong evidence “GridLiance is a transmission-only utility company, but we are more than just wires.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 17 | 25 contacts → | ||||
Indirect evidence “We engineer the power grid” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 18 | 16 contacts → | ||||
Partial evidence “The Palau Public Utilities Corporation (PPUC) continually strives to provide dependable and safe electric power and services at a reasonable price to its customers.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 19 | 13 contacts → | ||||
Indirect evidence “Powder River Energy has a diverse portfolio of members ranging from large coal mines and coal bed methane to farm, ranch and residential meters.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 20 | 12 contacts → | ||||
Partial evidence “Southern Rivers Energy is an electric utility based in Barnesville, GA” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 21 | 7 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 22 | 7 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 23 | 3 contacts → | ||||
Indirect evidence “Entry Automation Inc is a company based out of Orlando, Florida, United States.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 24 | 3 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: utility transmission operators. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names utility transmission operators.
- Partial evidence
- Its own public description names part of utility transmission operators, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name utility transmission operators. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 24 of 37 utility transmission operators based in the United States
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Utility transmission operators based in the United States at a glance
As of Sep 22, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 37 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among utility transmission operators, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “utility transmission operators”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names utility transmission operators), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among utility transmission operators, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 10,752 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 22, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names utility transmission operators, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many utility transmission operators are there based in the United States?
RevenueBase identified 37 utility transmission operators headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
American Electric Power, headquartered in Columbus, tops this list with the largest team on record.
Which city has the most utility transmission operators?
Houston leads with 3 headquartered companies, followed by Austin (2) and Dallas (2).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 10,752 verified decision-maker contacts tracked across these 37 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 22, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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