South Orange County Reliability Enhancement

San Diego Gas & Electric’s South Orange County Reliability Enhancement primarily consists of rebuilding the substation in San Juan Capistrano, upgrading the transmission lines from the 138-kV and 12-kV to 230-kV, replacing select wood, steel and lattice towers with taller new steel fire-resistant poles, and upgrading the Talega Substation in San Clemente. This is a $400M project. It is currently mired in the approval process.

Project Sponsor Line Miles Voltage (kV) From State To State Year in Service
San Diego Gas and Electric 8 230 CA CA 2020
Estimated Costs ($M) Voltage Type Project Status Project Group Origin Point Destination Point
400 Under Construction San Juan Capistrano Talega
Interstate Build Start NERC ISO/RTO Country Project Partners
WECC CAISO US