Yuma Proving Grounds, Yuma Arizona
 
This large (105,000 peak watts) photovoltaic power system supplies 480V/3-phase electric power to a remote test area of Yuma Proving Ground in Arizona. The building contains a large battery and inverter. A generator (not visible, behind the building) provides back-up for the system.
 
Some close-up views of the PV array at Yuma Proving Ground in Arizona