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We've completed the siting process for many facilities that are in the pre-construction or construction phases of development.
​preparing for construction
Projects listed on this page have completed the public process. The extra high voltage and high voltage projects also have gained approval from the Arizona Corporation Commission (ACC) to move forward with construction.
 
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perryville substation to valencia substation 69kV power line siting
voltage?
estimated completion date
location
69 kV
late 2018
Central Buckeye

project need
Connect the Perryville Substation to the Valencia Substation. Ensure a reliable power source for the future.

project description​
The electric system serving the central Buckeye area is made up of multiple substations and power lines. These substations are located in residential and commercial areas. The loss of any one of the 69kV lines or substations may result in power outages in the area until repairs can be made. Outages are often a result of powerful storms in the area or even vehicle accidents. Adding new facilities will improve reliability and help ensure APS has adequate power available to meet the electrical needs in the area.
To maintain reliable electric service and accommodate future load growth, APS plans to add a new substation near 239th Avenue and Southern​ Avenue. This new substation will require new 69kV power lines to connect into the existing electrical system currently serving the area. These new power lines will connect the new substation with both the Perryville Substation, located at Jackrabbit Trail and Lower Buckeye Road, and the Valencia Substation, located at Miller Road and Maricopa Road. The resulting project will create a continuous 69kV line between the Perryville and Valencia substations, with an interconnection at the new substation.​

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project planning​
In early 2017, APS hired Environmental Planning Group (EPG) to assist in evaluating route alternatives, to assess potential environmental impacts, and to support the public outreach process. Through an extensive public outreach and planning process, which is now complete, we have identified the final alignments for the two segments of the project (see map below).

When developing route alternatives, APS evaluates many criteria, including: environmental impacts, engineering and construction feasibility, land acquisition timing and costs, regulatory approvals, potential impacts to existing and planned neighborhoods, and input from agencies and the public.

The new segments of the 69kV power line will be built on steel poles and will be either a single 69kV circuit configuration (three wires per circuit) or a double 69kV circuit configuration (six total wires on the same pole) depending on the segment. The anticipated height of the new poles will be approximately 65 feet. APS plans to have the first new 69kV power line (Valencia segment) in service by approximately late 2018."

​project maps
 
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The new segments of the 69kV power line will be built on steel poles and will be either a single 69kV circuit configuration (three wires per circuit) or a double 69kV circuit configuration (six total wires on the same pole). The new 69kV power lines may be constructed in a new alignment or added in areas where some lines already exist. In most cases the existing facilities would be rebuilt on the new poles to consolidate structures. It is anticipated that any new poles would be approximately 65 feet in height. The line segments would require a right-of-way or easement approximately 30 to 40 feet in width to construct, operate, and maintain the facility. APS plans to have the first new 69kV power line (Valencia segment) in service by approximately late 2018.
In early 2017, APS hired Environmental Planning Group (EPG) to assist in evaluating route alternatives, to assess potential environmental impacts, and to support the public outreach process. Baseline information about land use, visual, biological, cultural, and recreational resources for the area has been collected. This information, along with engineering and construction studies performed by APS, was used to develop preliminary route alternatives within the study area.

When developing route alternatives, APS evaluates many criteria, including: environmental impacts, engineering and construction feasibility, land acquisition timing and costs, regulatory approvals, potential impacts to existing and planned neighborhoods, and input from agencies and the public.
 
 
Initial briefings were held with representatives and officials from the City of Buckeye to inform them of the proposed project, and to solicit input. The public was notified of the project with our first newsletter mailing in March 2017 and a public open house on March 22, 2017. A second newsletter was mailed in July to announce the second public open house that was held August 2, 2017. At these meetings the public learned about the project need, how the siting process is carried out, and provided their input on possible line route locations. Throughout this process we have received numerous comments about the project through the web, mail, email, and by telephone.
 
All comments, input, and data gathered have been analyzed and evaluated and the results were used to identify potential power line routes. These potential routes were further evaluated using the siting criteria mentioned above and several different alternatives were carried forward for public input (see map below).
 
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public input is important​
An important component of this siting process is to gather input from residents, tenants, property owners, and businesses within the study area. APS and EPG have completed a thorough review of all public comments submitted. After consideration of the comments and a more detailed engineering evaluation, APS has selected the final power line routes. A third and final newsletter was mailed to the public and key stakeholders on October 13, 2017. This final newsletter illustrated the selected final power line routes and the anticipated schedule for construction.
Following this second open house, APS and EPG will review all additional public comments submitted. After consideration of the additional comments and a more detailed engineering evaluation, APS will select the final power line routes. A third and final newsletter will be prepared and distributed to the public and key stakeholders. This final newsletter will illustrate the selected final power line routes and the anticipated schedule for construction.​
project updates​
Although the siting process is now complete, this webpage will be maintained with the latest information. Questions can be submitted to an APS Siting Consultant at perryvillevalencia@apsc.com.

related documents
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altadena substation to cactus substation 69kV power line siting
voltage
estimated completion date
location
69 kV
summer 2018
North Scottsdale

​project need
Connect the Altadena Substation with the Cactus Substation. Ensure a reliable power source for the future.
contact

Kevin Duncan / 602-493-4200

project documents
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raintree substation to east end substation power line siting
voltage
estimated completion date
location
69 kV
energized August 2017
North Scottsdale
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doney park power line
voltage estimated completion date location
69 kV 2021 Flagstaff
project need
provide a new 69kV power source to serve a new substation in Doney Park


contact

Brad Larsen, 602-493-4338

related documents


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northeast valley power line
voltage estimated completion date location
69 kV 2019 Scottsdale/Phoenix
project need
new facilities to ensure reliable electric service for the rapidly growing Northeast Valley

contact
line siting: Brad Larsen, 602-493-4338
related documents


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north gila to orchard (ts-8) to yucca
voltage estimated completion date location
230 kV 2021 Yuma
project need
improve electrical capacity and reliability in the Yuma area, and may potentially accommodate the development of renewable energy projects in the region
contact

Brad Larsen, 602-493-4338

related documents
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sundance to pinal central (previously sundance to pinal south)
voltage estimated completion date location
230 kV to be determined Pinal County


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west valley north
voltage estimated completion date area
230 kV 1st circuit energized May ​2016; 2nd circuit completion tbd​ Surprise, North Buckeye
project need
increase electrical capacity and improve reliability in the area
contact

Brad Larsen, 602-493-4338

related documents
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west valley south
voltage estimated completion date location
230 kV 1st circuit ​energized May 2015; 2nd circuit completion tbd Goodyear, Waddell
project need
increase electrical capacity and improve reliability in the area
contact

Brad Larsen, 602-493-4338

related documents
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sun valley (ts-5) to morgan (ts-9) transmission line
voltage​ ​estimated completion date ​location
500 kV/230 kV ​ 2018 Northwest Phoenix
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project need
  • connect the Sun Valley Substation near Buckeye with the Morgan Substation near Peoria
  • improve reliability by completing a 500kV connection from the Palo Verde Hub to the NE Valley (Pinnacle Peak Substation)
  • increase import and export capability from the PV Hub (enough to supply power to 150,000 residences)
  • provide the infrastructure to move planned generation resources (renewable or otherwise) from their source near the Palo Verde Hub to the Metro Area
  • help relieve Transmission Congestion
project history
  • May 19, 2015 - ACC votes to approve the CEC amendments
  • August 12, 2014 – ACC votes to reopen the approved Project to review and consider the proposed amendments
  • July 17, 2014 – APS files an amendment request with the ACC to amend the approved Project
  • January 17, 2014 – Record of Decision to grant a right-of-way on BLM land for the Project
  • visit the BLM website for additional information concerning the status of the EIS
  • November 9, 2012 - the Environmental Protection Agency announced the release of the Draft EIS
  • April 11, 2011 - the Bureau of Land Management (BLM) launched an Environmental Impact Statement (EIS) process in compliance with the National Environmental Policy Act (NEPA)
  • March 17, 2009 - Certificate of Environmental Compatibility (CEC) issued by the Arizona Corporation Commission (ACC)
contact
Brad Larsen / 602-493-4338

related documents
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palo verde hub to sun valley (ts-5)
voltage
estimated completion date
location
500 kV
energized May 2016
Palo Verde to
North Buckeye
project need
provide the electrical transmission infrastructure that will bring bulk power into the North West Valley
contact

Brad Larsen, 602-493-4338

related documents
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mazatzal substation & interconnection project
voltage estimated completion date location
69 kV/345 kW 2018 Payson/Rye
project need
support growth and improve electrical capacity and reliability in the area
contact

Brad Larsen, 602-493-4338

related documents
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siting overview
Planning for the future means anticipating your electricity needs, something we’ve been doing for more than 125 years.

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