Trans Bay Cable
Trans Bay Cable (TBC) is a 53-mile, 400-MW submarine high voltage direct current (HVDC) transmission line located beneath San Francisco Bay. TBC is the first purely privately-developed and financed solution to meet the reliability needs of a regional utility grid in the United States and a critical component of the San Francisco area’s electricity infrastructure. TBC successfully commenced commercial operations in November 2010, delivering approximately 40% of the city’s electricity demand, reducing the need for unpopular in-city generation, and increasing overall system reliability by relieving grid congestion.
TBC provides a new source of power for the city of San Francisco, helping to lower long-term energy costs and provide transmission reliability for the entire Bay area. The transmission line receives regulated revenues under a formula set by the Federal Energy Regulatory Commission. This reflects a return on investment in its construction costs and capital expenditures, and reimbursement for operating costs.
Selected as a reliability project in 2007, TBC has demonstrated that the economic and social advantages to rate payers in the form of lower power cost and environmental benefits resulting from the reduction of congestion and access to lower cost generation far exceeds the cost of this critical asset.
For more information please visit www.transbaycable.com