Gateway South

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Completed segments

Aeolus to Mona/Clover (Gateway South - Segment F)

The Energy Gateway South transmission line is a new 416-mile, high-voltage 500-kilovolt transmission line and associated infrastructure running from the Aeolus substation near Medicine Bow, Wyoming, to the Clover substation near Mona, Utah. The project was completed in November 2024.

Sigurd to Red Butte (Gateway South - Segment G)

The Sigurd to Red Butte line segment is a critical piece of our Energy Gateway transmission expansion and is the third segment of the expansion to be built. The 345-kilovolt high-voltage transmission line stretching approximately 170 miles originates at the Sigurd substation, near Richfield, Utah and extends south to the expanded Red Butte substation near Central, Utah. The project was completed in May 2015.

(Updated January 2025)