Transmission and Facility Siting - Current Siting Projects

Arizona Public Service Company is committed to providing our customers with reliable, affordable electric service. The Phoenix metropolitan region continues to be one of the nation’s fastest growing urban areas producing an increasing demand for electricity. To meet this demand and our customers' energy needs, APS is involved in a number of power line and facility siting projects.

Arizona State Law requires utilities to obtain approval from the Arizona Corporation Commission prior to the construction of new electrical transmission facilities greater than 115kV. 

More information about transmission line siting in Arizona.

Current Siting Projects- Details

Extra High Voltage (EHV) - 500kV and 345kV Transmission Lines

TS-5 to TS-9 (Phoenix Metro Area - Northwest)

APS Q43 Interconnection Project (Dateland/Yuma County)

High Voltage (HV) - 230kV and 115kV Transmission Lines

North Gila to TS-8 230kV (Yuma)

Sub-Transmission - 69kV Transmission Lines

Prescott City to White Spar (Prescott)

In addition to the current projects, APS has been involved in and federal efforts to identify and designate utility corridors in Arizona and the Southwest. Select the link below for more information on these efforts.

Utility Corridor Planning

Listing of projects for which siting efforts have been completed but construction has not yet started.

Main | Current Projects | Completed Projects

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