Siemens Power Transmission & Distribution Inc. has contracted with Worley-Parsons to provide engineering services for the high-voltage direct current (HVDC) terminals for the Trans Bay Cable project. The project is a 53-mile (85-km) submarine transmission line that will stretch under San Francisco Bay from Pittsburg, California, U.S. to San Francisco, California. The HVDC link is rated at 400 MW.

WorleyParsons' (Reading, Pennsylvania, U.S.) scope of work for the terminal facilities includes site engineering, electrical and structural engineering, and permit management.