Arizona brings a huge grid battery online ahead of peak demand
Michelle Lewis | Jul 7 2025 - 10:27 am PT
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 Photo: e-storage One of Arizona’s biggest grid battery storage projects is now online and helping power homes as the summer heat ramps up.
Recurrent Energy, a subsidiary of Canadian Solar, just brought its 1,200 MWh Papago Storage facility in Maricopa County into commercial operation. The big grid battery is now supplying stored electricity to Arizona Public Service (APS), the state’s largest utility, in time for peak air-conditioning season.
Papago is the first of three Recurrent projects with APS. Together, they’ll provide 1,800 MWh of storage and 150 MW of solar power. That’s enough to run about 72,000 homes for four hours and provide year-round solar for another 24,000 homes.
“Summer is here, and we’re ready to serve APS customers with the energy they need when they need it,” said APS director of resource acquisition Derek Seaman.
The Arizona Corporation Commission chair, Kevin Thompson, noted that bringing online one of Arizona’s largest battery storage projects during a critical time when energy demand is skyrocketing is a milestone.
Canadian Solar’s e-STORAGE arm built the project and will keep it running under a long-term agreement.
Recurrent CEO Ismael Guerrero said, “We’re proud to deliver flexible capacity that meets the state’s growing energy needs and grateful for APS’s continued partnership.”
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