2. Proposed Substation Project

By this application, San Diego Gas & Electric Company (SDG&E) seeks a permit to construct the East County Substation (ECO Substation) Project, which includes a new 500/230/138 kilovolt (kV) electric substation, a new 500 kV transmission line of approximately 3,065 feet to loop the substation into the existing 500 kV Southwest Powerlink transmission line (SWPL), rebuild of the Boulevard Substation to operate at 138/69/12 kV on a new parcel adjacent to the existing substation, a new 138 kV transmission line of approximately 13.3 miles from the ECO substation to the rebuilt Boulevard Substation, and a microwave communication relay system. The project will enable the proposed renewable wind energy generation in southeastern San Diego County and Mexico to interconnect to the transmission grid and will improve the reliability of electric service to several communities in the area.