Streamview Substation
Rebuild & Expansion Project 

This project will replace aging electric service equipment and improve the safety and reliability of electric transmission and distribution systems for the Chollas View and College areas of the City of San Diego.

The project scope includes:

• Replacing aging infrastructure installed in the 1950s
• Upgrading overhead transmission lines & existing underground distribution lines
• Enhancing safety upgrades to help prevent unplanned outages in SDG&E’s service territory
• Providing additional capacity to serve existing and future electrical load growth.

As our region expands, the demand for energy also grows. Given the load growth over the past decade in the mid-city San Diego area, increased demand for energy has created congestion on the existing power lines which causes a strain on the electric system. The substation expansion will provide additional capacity and system reliability for the area.

The project is located on a triangular piece of land bounded by Lea Street to the north, 54th Street to the west and Chollas Parkway to the southeast in the City of San Diego Chollas View and College areas. This project includes construction activities at SDG&E’s existing Streamview Substation which includes newly acquired parcels that are adjacent to the existing site.

The community is made up of mixed residential and commercial districts. Some major customers in this area include San Diego State University, the City of San Diego, SD Unified School District, AT&T, Verizon, T-Mobile and the Salvation Army.

A laydown yard (also called a staging area) is a location typically near a construction site where tools, materials, equipment and vehicles are stored temporarily when they are not in use. The laydown yard for this project is located east of the Burlington Department Store and south of University Avenue. It is desirable for the laydown yard to be in close proximity to the active construction site to minimize impact on traffic, noise, etc. for the community. Access to and from this location will occur from Chollas Parkway.

There will be intermittent noise, however, work will be performed in compliance with the City of San Diego noise ordinance. While the ordinance allows for work to be performed from 7 a.m. to 7 p.m., Monday through Saturday, most of the work will be performed approximately between 7 a.m. and 4 p.m., Monday through Friday. Crews will not perform work on holidays or Sundays except under extreme or emergency conditions.

Construction is expected to end Q4 2026.

Overall, the impact on surrounding traffic will be minimal. There will be times when our trucks and equipment are coming and going from the substation which may cause some traffic. In addition, there will be an occasional shoulder closure, lane closure or manned traffic control to complete portions of the work. Work that could impact traffic and the public will be performed in accordance with traffic control and other permits issued and monitored by the City of San Diego.

SDG&E’s top priority is safety. This project is no different from many other electric infrastructure upgrades and projects SDG&E® undertakes throughout the region. All infrastructure within the transmission and distribution systems is designed, constructed, operated and maintained in accordance with strict state and federal safety regulations.

SDG&E has a comprehensive and proactive safety program to ensure the integrity of the system and the protection of our communities, customers, employees and infrastructure.

You can visit our smcun.com/Major-Projects for more information or call the project information line at 1-844-765-6388.