Energy storage

Solar after sunset in the Arizona desert

Energy storage is a critical component of Arizona’s clean energy future. Energy storage systems capture solar energy when the sun is shining bright for use after sunset to meet customers’ needs. Our customers now benefit from the integration of large-scale battery energy storage systems connected to APS solar power plants.

Energy Storage Benefits

Energy storage supports reliability and resilience of our system, especially during times of peak demand.
Energy storage maximizes renewable resources and allows them to work alongside other critical resources, such as natural gas.
Batteries create more flexibility by absorbing energy during the daytime when there is an abundance of solar production and customer energy use is lower. Then, we can release this stored energy when customers need it most.
Our energy storage strategy is vital to transitioning to a cleaner energy future, integrating more renewables into APS’s diverse energy mix and serving customers with 100% clean, carbon-free energy by 2050.

"When families are making dinner or watching TV in the evening, they need the lights to be on and the air conditioner running. Solar after sunset provides another critical energy resource when our customers need it most – especially during our hot summer months."
- Ben Cluff, APS Director of Renewable Generation