Circle City Substation & Mira Loma-Jefferson Sub-Transmission Line Project

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The Circle City Substation and Mira Loma-Jefferson Sub-transmission Project are important infrastructure upgrades that will enable us to safely and reliably meet increased demand for electricity in this region.

Southern California Edison has proudly served the city of Corona for many years, and as the city has grown, we have grown with it by investing in new infrastructure that ensures the delivery of safe, affordable and reliable power.

The City of Corona is enjoying an expanding job market, new industrial growth and a thriving housing market. To meet the demand of Corona’s growth, Southern California Edison has proposed the Circle City project.

Between 2010 and 2015, Corona’s population grew 7.8%, compared to surrounding cities such as Ontario and Riverside with 4.4% and 6.1% growth, respectively. To keep up with Corona’s progress, new electrical infrastructure is needed. Additionally, households across Southern California are using energy in a much different way than they did 10 years ago, and SCE is committed to ensuring that customers’ needs are met.

Like Corona, progress is important to SCE, which is why the utility is preparing your local grid for more rooftop solar, onsite energy storage and the growing adoption of electric vehicles.

For more information on how SCE is making the grid better, please see - Making Vision a Reality

For more information on the Circle City Project, please see below.