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)

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

North Gila to TS-8 230kV (Yuma)

Sundance to Pinal South 230kV (Pinal County)

Sub-Transmission - 69kV Transmission Lines

VV-01 to Copper Canyon (Yavapai County / Camp Verde)

Doney Park (Flagstaff)

TS-8 to San Luis 69kV  (Yuma)


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.  Click on the link below for more information on these efforts.

Utility Corridor Planning

For a listing of projects for which siting efforts have been completed but are not yet under construction click here. 

Main | Current Projects | Completed Projects

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