Sycamore – Penasquitos

CAISO, as part of an identified reliability needed project, proposed the Sycamore-Penasquiots 230-kV transmission line. The line will travel approximately 16.4 miles with an in-service date by June 2018. Four companies originally applied for sponsoring of the project, with San Diego Gas & Electric and Citizens Energy ultimately selected. The proposed transmission line will provide a means by which renewable generation in the ISO interconnection queue can effectively be delivered to existing grid. It is still undecided what the exact voltage type of the line will be: with AC or DC, underground or above being considered.

Project Sponsor Line Miles Voltage (kV) From State To State Year in Service
San Diego Gas and Electric 16.4 230 CA CA 2018
Estimated Costs ($M) Voltage Type Project Status Project Group Origin Point Destination Point
134.5 Operating Order 1000 Sycamore Canyon Penasquitos
Interstate Build Start NERC ISO/RTO Country Project Partners
No 2016 WECC CAISO US Citizens Energy