Arizona Public Service (APS) is bringing battery-based energy storage to the desert through a 4 megawatt (MW) energy storage agreement with AES Energy Storage which will provide enough storage capacity to power 1,000 homes. The pair of 2-MW AES Advancion® energy storage arrays will be deployed as part of the APS Solar Partner Program (SPP), and represent AES’ first installation in Arizona.

The two Advancion battery arrays will be installed in Surprise and Buckeye, which have a total of 120 SPP customers and a high penetration of solar. The batteries will deliver energy to customers at the time of day when electricity is in the greatest demand and is most expensive. By bringing energy storage to these areas, APS can maintain reliable service for solar customers, even when the sun is down and solar panels are no longer producing power.

Lithium-ion Battery