Trans Bay Cable LLC (TBC) is a 53 mile Direct Current electrical transmission cable with a fiber optic communication cables bundled together and buried in the San Francisco Bay. TBC extends from the cities of Pittsburg, CA to San Francisco, CA, and provides approximately 40% of the electrical power used on a daily basis in San Francisco and the surrounding areas. TBC is a federally identified “Critical Asset” in the Northern California electrical grid and is governed by the Federal Energy Regulatory Commission and The California Public Utilities Commission.
Trans Bay Cable LLC’s mission is to provide a safe, reliable and cost effective source of electrical transmission for the City of San Francisco while maintaining the highest ethical standards and providing a rewarding environment for employees, investors, stakeholders and customers.
TBC Transmission Route
Tailored-to-fit HVDC transformers by Siemens enable reliable and highly-efficient HVDC power transmission systems.