Oncor to construct transmission projects under ERCOT's Strategic Transmission Expansion Plan
By Global Infrastructure Sherpa · Nov 5, 2025
Strategic Transmission Expansion Plan
Project
Oncor Electric expects to construct more than half the projects for ERCOT’s statewide multi-billion-dollar 765-kV Strategic Transmission Expansion Plan. Oncor anticipates being responsible for more than half of the investment related to the Permian Basin Reliability Plan (PBRP) and the Eastern portion of STEP.
Deal Analysis
Oncor Electric is poised to play a pivotal role in ERCOT's Strategic Transmission Expansion Plan (STEP), undertaking the construction of more than half of the projects within this multi-billion-dollar initiative. This includes significant involvement in both the Permian Basin Reliability Plan (PBRP) and the eastern segment of STEP. As a regulated electric transmission and distribution service provider delivering electricity to over 3.8 million customers, Oncor's participation is crucial for enhancing grid reliability and supporting future energy demand across Texas. ERCOT, managing power flow to 90% of Texas customers, relies on strategic partnerships like this to ensure a stable and resilient energy infrastructure.
This development highlights the ongoing investment in Texas's transmission infrastructure to accommodate growing energy needs and address reliability concerns, particularly in the energy-intensive Permian Basin. While the deal value remains undisclosed, Oncor's substantial commitment suggests a significant capital expenditure and a long-term strategic alignment with ERCOT's vision for a modernized and robust grid. The announcement underscores the increasing importance of transmission infrastructure development in supporting the state's economic growth and energy security.
- Oncor to construct more than half of ERCOT's Strategic Transmission Expansion Plan projects.
- Significant investment in the Permian Basin Reliability Plan (PBRP).
- Involves two key players in the Texas electricity market: Oncor and ERCOT.
- Underlines the growing need for transmission infrastructure investment in Texas.
Market Context: The deal occurs within the context of increasing demand for electricity in Texas, driven by population growth and industrial expansion, particularly in the Permian Basin. This necessitates significant investment in transmission infrastructure to ensure grid reliability and prevent bottlenecks.
Source Intelligence
KEY DETAILS
Oncor projects a 30 percent increase in its $36.1 billion capital spending plans through the end of the decade, with much of that spending growth driven by such transmission construction. Quote: "The company also projects a 30 percent increase in its $36.1 billion capital spending plans through the end of the decade, with much of that spending growth driven by such transmission construction."
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Capacity
These include approximately 210 gigawatts from data centers and over 16 gigawatts of load from other industrial sectors.
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Location
Oncor Electric expects to construct more than half the projects for ERCOT’s statewide multi-billion-dollar 765-kV Strategic Transmission Expansion Plan, the Dallas-based utility reports.
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COD
Oncor expects to be responsible for more than half of the large 765-kV lines to be developed under this plan, with its first PBRP 765 kV line to be energized by the end of 2028.
PARTIES MENTIONED IN SOURCE
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Oncor Electric
developer
"Oncor Electric expects to construct more than half the projects for ERCOT’s statewide multi-billion-dollar 765-kV Strategic Transmission Expansion Plan, the Dallas-based utility reports."
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ERCOT
N/A
"Oncor Electric expects to construct more than half the projects for ERCOT’s statewide multi-billion-dollar 765-kV Strategic Transmission Expansion Plan, the Dallas-based utility reports."
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Sempra
parent company
"These details of the company’s spending plans and financial performance were revealed on Nov. 5, during a quarterly conference call with its CEO Allen Nye and officials from Oncor’s parent company, California-based Sempra."
medium quality
Enriched Feb 19, 2026
Market Context
This deal is part of the Transmission sector in USA.
1 of 139 Transmission deals tracked this month · Updated daily