Overview
Chollas Substation is an operational electrical substation in San Diego, California, United States, operating at 69 kV to support local grid stability.
Chollas Substation is an operational electrical substation located in San Diego, California, United States. As a 69 kV facility, it serves as a medium-voltage node within the regional transmission and distribution network, playing a role in stepping down power for local distribution. The substation operates under the regulatory framework of the North American Electric Reliability Corporation (NERC) and the Federal Energy Regulatory Commission (FERC), which enforce reliability standards for bulk power systems. In California, the California Independent System Operator (CAISO) manages grid operations, and substations like Chollas are integral to maintaining voltage stability and load balancing in the urban San Diego area. Situated in a densely populated urban environment, Chollas Substation supports critical infrastructure for residential, commercial, and industrial customers. Its location near major load centers enhances grid resilience and reduces transmission losses. The facility's operational status ensures continued reliability for the surrounding community.
Environmental context
Chollas Substation is located in an urban area of San Diego, where electrical infrastructure must balance reliability with environmental considerations such as electromagnetic fields and land use. The 69 kV voltage level is typical for distribution substations, which are often situated in residential or commercial zones. Proximity to sensitive receptors like schools and hospitals may influence operational practices, though no specific environmental designations are confirmed.
Frequently asked questions
Chollas Substation is located in San Diego, California, United States, at coordinates 32.743878, -117.046613.
Chollas Substation operates at 69 kV, which is a common voltage for distribution substations in the United States.
Chollas Substation is regulated by the North American Electric Reliability Corporation (NERC) and the Federal Energy Regulatory Commission (FERC), with grid operations managed by the California Independent System Operator (CAISO).
A 69 kV substation typically steps down transmission-level voltage to distribution levels for local power delivery to homes and businesses, and may also serve as a switching point for grid reconfiguration.
Yes, Chollas Substation is listed as operational, meaning it is actively contributing to the electrical grid in San Diego.