Arizona Public Service taps Generac for residential battery aggregation services

Generac Grid Services announced that it has been awarded a multi-year contract by Arizona Public Service (APS) to provide additional grid capacity for residential battery storage systems. The agreement leverages Generac Grid Services’ Concerto Distributed Energy Resource Management System (DERMS) to deliver both on-demand capacity and advanced network services (AGS), including voltage management, real-power orchestration, fleet energy management and targeted responses. In turn, this partnership will also help increase the presence of Generac’s PWRcell battery systems to supply energy to the grid.

This solution is part of APS’ Distributed Demand-Side Resources (DDSR) Aggregation Tariff, which encourages customers to install smart technologies, such as Generac PWRcell, along with other energy-saving products. Generac Grid Services was the only bidder to provide all the requested products below the rate. Generac Grid Services’ Concerto will be used to deliver capacity, demand response and load-shifting resources, as well as more advanced DERMS use cases, including location value, voltage support and other network ancillary services.

“APS is pleased to partner with companies such as Generac Grid Services to connect residential customers with smart home batteries capable of providing reliable power and amplifying the APS grid,” said Kerri Carnes, manager of Customer Technology at Arizona Public Service. “Customer engagement is at the heart of all our programs, and this is just one more way we work with our customers to maintain service reliability and maximize the clean energy benefits of solar plus storage systems in our service area. “

As the chosen contractor, Generac Grid Services will begin collecting residential energy from Generac PWRcell batteries over a five-year period beginning January 2023. The aggregated energy will support both system-wide capacity via demand response events, as well as location-based capacity on target system feeders. The network of batteries may also be able to provide additional services to the grid if they are otherwise available.

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