Sun Valley to Morgan Project

The Sun Valley to Morgan Project is a 38-mile, 500/230-kV transmission line that originates at the proposed Sun Valley Substation and terminates at Morgan Substation in Arizona. The project will increase import capability for the Phoenix Metro area and export from Palo Verde solar and gas resources.   This project is the final phase of a new 500-kV path from Palo Verde all the way across the northern areas of Phoenix to the eastern side of Phoenix. The first two projects out of Palo Verde are the Delaney-Palo Verde 500-kV line and the Delaney-Sun Valley 500-kV line and this project will connect at Morgan with the already constructed and completed Morgan-Pinnacle Peak 500-kV line. The project will be the final connection to complete the new 500-kV path which will improve reliability in the area.  The project, which is sponsored by Arizona Public Service, is estimated to cost $127 million. Construction is set to complete in 2024.

Project Sponsor Line Miles Voltage (kV) From State To State Year in Service
Arizona Public Service Co. 38 500 AZ AZ 2018
Estimated Costs ($M) Voltage Type Project Status Project Group Origin Point Destination Point
127.4 Under Construction Sun Valley Morgan
Interstate Build Start NERC ISO/RTO Country Project Partners
2017 WECC US Salt River Power Authority and Central Arizona Water Conservation District