Private company
Who owns Electric Transmission Texas, LLC (ETT)
One company in the researched set discloses a stake in Electric Transmission Texas, LLC (ETT), worth $969m between them. Electric Transmission Texas, LLC (ETT) is private, so no 13F reports it: a 13F covers exchange listed positions only. These figures exist because each holder disclosed the stake in its own filings.
Electric Transmission Texas, LLC (ETT) - Profile
- Type
- joint venture
- Based in
- United States
- Founded
- 2007
Electric Transmission Texas, LLC acquires, builds, owns and operates high voltage electric transmission facilities inside the Electric Reliability Council of Texas grid, the interconnection that covers most of the state. As of 31 December 2025 its system comprised roughly 2,100 miles of transmission lines and 51 substations, with total assets of about 4.4 billion dollars. The company is a transmission only utility: it earns regulated returns on the lines and substations it builds rather than selling power, and much of its build out has been driven by the need to move wind and solar generation from West Texas to load centres. It is an evenly split joint venture formed in 2007 between subsidiaries of American Electric Power, which operates the assets and contributed existing Texas transmission, and BHE U.S. Transmission, the transmission arm of Berkshire Hathaway Energy, which supplies capital.
Source
Electric Transmission Texas, LLC (ETT) files nothing with the SEC, so none of this comes from a filer record. The description was written for this site in August 2026 from Berkshire Hathaway Energy Form 10-K for the year ended 31 December 2025, Berkshire, AEP joint venture files to build 138 kV transmission line in Texas, Renewable Energy World and AEP transmission investment overview. The ownership figures below come from the holders' filings instead, and are sourced row by row.
The disclosed stakes
One row per position. Where a holder reports the same company in two share classes, both rows are shown rather than summed, because the class is part of a position's identity.
Where each figure comes from
A private stake has no ownership form behind it, so the source is always the holder's own filing or disclosure. Anything modelled says so, with the arithmetic.
- American Electric Power Company, Inc., as of 31 Dec 2025. AEP holds this 50% membership interest through its wholly-owned subsidiary AEP Transmission Holdco, accounted for as an equity method investment. AEP's investment in ETT was $969 million at 31 December 2025 and $897 million at 31 December 2024. AEP's equity earnings associated with ETT were $80 million, $86 million and $74 million for the years ended 31 December 2025, 2024 and 2023, respectively. source
What this page is not
It is not a complete register. It lists the holders who happen to be inside the researched set and disclosed the stake themselves. A private company can have many other shareholders, and nothing here rules them out: venture investors, founders and employees usually appear in no public filing at all. Percentages are of Electric Transmission Texas, LLC (ETT) where a holder stated one, and are missing where no holder did.