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APS to install pair of battery storage systems in rural Arizona

Arizona Public Service Co. will install a pair of 4-MWh battery storage systems in rural Punkin Center, Ariz., instead of rebuilding about 20 miles of transmission and distribution poles and wires, according to an Aug. 9 release.

The Pinnacle West Capital Corp. subsidiary expects to begin construction in fall 2017 and place the two systems into operation in early 2018. The batteries will be made by AES Corp. subsidiary AES Energy Storage LLC.

The project will be built with the capability to add energy capacity as the need arises over the next five years to 10 years. "Over the next 15 years, APS has plans to add 500 megawatts of storage capacity. This project is indicative of the type of smart grid APS envisions for customers, one that enables people to have more technology in their own homes," said Scott Bordenkircher, APS director of transmission and distribution technology innovation and integration, in an Aug. 9 statement.