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PacifiCorp says it has begun construction on a new high-voltage transmission line to serve customers throughout six western states. The 160-mile line will run from Sigurd to Red Butte in Utah.

The utility says investment in new transmission lines is essential in the West for the reliability and security of the electric system and to improve access to both conventional and renewable generation resources. The new 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 be operational in the summer of 2015.

The first segment of PacifiCorp'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.

The most recent segment - a 100-mile stretch from Mona to Oquirrh - will begin serving customers May 17. This infrastructure 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.


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