The Metcalf – San José B HVDC Project is a reliability-driven project that will strengthen the electrical grid in central San José by providing a strong, new source to the area. The project will support economic development and provide better access to cost effective, renewable energy to meet the needs of residents and businesses. The project is located in Santa Clara County, California and is anticipated to enter into service in 2028.
The project includes two new high voltage direct current (HVDC) terminals, which provide the ability to control power flows. The northern HVDC terminal will include a 115 kV alternating current (AC) gas-insulated switchgear (GIS) switchyard and will interconnect to the existing San José B substation. The southern HVDC terminal will include a 500 kV AC GIS switchyard and will interconnect to the existing Metcalf substation via a new approximately two mile 500 kV underground transmission line. A new approximately 14 mile ±320 kV HVDC underground transmission line will connect the two terminals.
Construction is planned to begin in early-2026 after necessary permits, agreements and land rights are received. The construction phase of the project is anticipated to be approximately 2 years in duration, concluding with the energization and testing of the new project facilities.