Pinnacle West's APS targets 6,000 MW of battery storage by 2030

By Public Technologies
  • Pinnacle West's APS filed its 2026 resource plan, identifying nearly $1 billion in potential savings from extending Four Corners operations.
  • Operating Four Corners beyond 2031 could lower replacement costs; its lease requires retirement no later than 2038.
  • APS expects approximately 6,000 megawatts of battery storage on its system by 2030 to support renewable generation and peak demand.
  • Natural gas additions include the new Desert Sun plant, Saguaro's expansion and conversion of the retired coal-fired Cholla plant.
  • Annual electricity use is forecast to double by 2041 from 2026 levels, driving the need for additional generation.


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