PacifiCorp moves forward with western transmission network expansion

PacifiCorp began construction of a new high-voltage transmission line to serve customers throughout six western states. Utah Gov. Gary Herbert joined power company officials in ground breaking for the 160-mile Sigurd to Red Butte transmission line just as the company also announced completion of its 100-mile Mona to Oquirrh transmission line that will begin serving customers May 17. Both projects are located in Utah.

The first segment of the company’s Energy Gateway transmission expansion project, a 135-mile segment from Idaho to Utah, has been serving customers since 2010. Other segments continue in varied stages of siting and permitting and will be completed in a phased-in approach to respond to customers’ needs.

The company has adjusted plans according to the developing needs of customers to ensure that new facilities are put in place at the right time to provide safe, reliable and reasonably priced electric service.

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.

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