PacifiCorp has begun construction of the high-voltage, 160-mile Sigurd to Red Butte transmission line to serve customers throughout six western states. In addition, the company has announced the completion of its 100-mile Mona to Oquirrh transmission line, which will begin serving customers May 17. Both projects are located in Utah.
According to Natalie Hocken, PacifiCorp senior vice president of transmission and system operations, investment in new transmission lines is essential in the West for grid reliability and to improve access to both conventional and renewable generation resources.
The 345 kV Sigurd to Red Butte transmission line will stretch from the Sigurd substation near Richfield to the expanded Red Butte substation in Washington County. It is expected to begin serving customers in summer 2015.
The recently completed Mona to Oquirrh transmission line includes a new single-circuit, 500/345 kV line from the Clover substation in Juab County to the site of the future Limber substation in Tooele County. From there, the line continues as a double-circuit, 345 kV line to the existing Oquirrh substation in West Jordan. Construction on that line began in 2011.