CFE breaks ground on 564 million peso underground line between Hermosillo substations

The Comisión Federal de Electricidad (CFE) begins construction on Monday, November 2, 2026, of an underground transmission line worth 564 million pesos between the Hermosillo Cuatro and Río Sonora substations, in Hermosillo, Sonora, according to the company's bulletin 13894 released on November 1.

The work will be carried out on Bulevar Antonio Quiroga, between Luis Donaldo Colosio and Paseo Río Sonora, and involves partial lane closures coordinated with the Hermosillo municipal government and traffic authorities, according to the Entorno Informativo report. The closures will be applied during peak traffic hours, so CFE recommended allowing extra travel time and using alternate routes. The company says the project aims to reinforce the area's infrastructure and meet growing demand. The segment does not operate in isolation: it is part of Hermosillo's 115 kilovolt (kV) underground network that CENACE's 2024-2038 National Transmission Network Expansion and Modernization Program lists among the elements with capacity constraints in the northwest region.

CENACE's plan links that constraint to project P19-NO2, which contemplates four underground circuits and 13.53 circuit-kilometers to relieve limitations in the Northwest. The document warns that overload reduces the useful life of the cables and limits the interconnection of new generation and load in the area. The 564 million peso investment adds to the work CFE is carrying out to sustain supply in Sonora, a state where transmission capacity conditions the connection of new load and generation to the National Electric System (SEN). The bulletin does not specify the length, voltage or capacity of the new line; the reference to 115 kV comes from CENACE's planning program.

CFE reported that it will communicate the project's progress on an ongoing basis. For the area, the point to watch is the physical progress of the segment on Bulevar Antonio Quiroga and its effect on the capacity available for new loads in Hermosillo.

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