The Sorrento Substation would be long forgotten had it not been for a few references in old news articles.
Despite the 1914 article proclaiming the opening of the station, a May 1912, article references the station in existence.
There's no information as to where it was located. A February 26, 1915, San Diego Union article mentions a voting polling place being located in "the former Sorrento Substation."