False, it is the "Pinal Central Substation" according to publications...

https://www.aps.com/-/media/APS/APSCOM-PDFs/About/Construction-and-Power-Line-Siting/Power-Line-Siting/Power-Line-Siting-Projects/Sundance-to-Pinal-Central/Sundance-Pinal-Central-6-20.ashx?la=en&hash=FD7C547954E20CA19D478FC7461D5CD2