DOE Closes $3.26 Billion Loan to Expand Texas Transmission Grid

The U.S. Department of Energy formalized on July 8, 2026, a loan of up to $3.26 billion to AEP Texas to build and modernize approximately 2,800 miles of transmission lines in Texas, the agency announced in a press release. The financing, the third closed by the Energy Dominance Financing Office (EDF), responds to power demand growing at the pace of data centers, advanced manufacturing, and oil and gas activity in the Permian Basin.

AEP Texas has signed letters of agreement totaling up to 41 gigawatts (GW) of potential new load through 2030, the company detailed in its own announcement. The EDF package, formerly the Loan Programs Office, covers nearly 100 projects, including reconductoring of existing lines and construction of new infrastructure, with the goal of doubling transmission capacity along the upgraded segments.

The expansion of the Texas grid carries direct implications for Mexico and the region. Texas is the primary supplier of natural gas to Mexico's National Electric System (SEN) and a key cross-border electricity partner through interconnections between ERCOT, the independent operator of the Texas grid, and northern Mexico. A more robust transmission network strengthens the reliability of the Gulf energy corridor and eases pressure on gas prices that feed combined-cycle plants on both sides of the border.

The DOE estimates that federal financing, offered at interest rates below commercial credit, will save approximately $685 million in electricity costs for more than one million Texas households and businesses over three decades. Parent company American Electric Power has raised its investment plan to $78 billion through 2030, of which $33 billion is earmarked for transmission across the 11 states where it operates, according to Latitude Media.

"Texas is positioned for extraordinary growth over the next five years," said Adrian Rodriguez, president of AEP Texas. The announcement comes as ERCOT manages a large-load interconnection queue that reached 226 GW in November 2025, nearly three times the total installed capacity of the Texas system, according to Latitude Media.

This article was written with artificial intelligence assistance based on verified sources and reviewed by a human editor before publication.