Transmission Construction

Transmission line worker, 1917

In 1917, the Grace to Terminal line was constructed to connect hydro facilities in Idaho to Utah. Workers perched on towers to clip in conductors and secure lines. In the early century, transmission construction required large crews of hard working men, horses and mules. Today, cranes and heavy equipment assist crews as they expand the transmission system.

With our Energy Gateway transmission expansion project, the company is taking the lead and moving forward to invest in approximately 2,000 miles of new high-voltage transmission line. The investment in new transmission will improve system reliability, address customer load growth, reduce transmission system constraints, provide access to diverse resources, including renewables, and improve the flow of electricity throughout our service area and in the western United States.

Get more information and photos from our past »

Springville to Helper, Utah 130kV transmission line construction in 1916.

Erecting a tower in 1917.

Building transmission in Wyoming in the 1960s.

Buiding a 44kV transmission line between Shelley and Blackfoot, Idaho in 1919.

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