SDG&E shares its philosophy and background for an extensive underground distribution system expansion. San Diego Gas & Electric (SDG&E) serves approximately 1.4 million electric customers in San Diego County and southern Orange County, California, U.S. The utility's extensive underground electric system is a key element for serving these customers reliably and safely. Undergrounding protects electric infrastructure from high winds, inclement weather and other factors, thus reducing the number of outages for the system and benefiting customers.
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