Attorney General Mayes Urges Arizona Corporation Commission to Investigate Whether APS Customers Subsidized Data Centers and Other Large Energy Users

Attorney General Mayes Urges Arizona Corporation Commission to Investigate Whether APS Customers Subsidized Data Centers and Other Large Energy Users Richie.Taylor@… Fri, 10/09/2026 - 08:26 Image Press Release Date Fri, 10/09/2026 - 12:00 PHOENIX – Attorney General Kris Mayes today urged the Arizona Corporation Commission to swiftly and publicly investigate whether Arizona Public Service Company’s (APS) Power Supply Adjuster (PSA) has facilitated a nearly $600 million cost shift from large energy users to other APS customers in recent years. “APS is asking Arizonans to pay for a $608 million annual rate increase at the same time it may have passed almost $600 million in costs from data centers and other large energy users onto them,” said Attorney General Mayes. “Before the Commission approves any APS rate increase, Arizonans deserve answers.” Attorney General Mayes’ request for an investigation follows a recent 12News investigation based on analysis that Abhay Padgaonkar filed in multiple Commission dockets on October 2, 2026. Mr. Padgaonkar contends that between 2023 and 2025, $587 million in costs attributable to a handful of large energy users may have been allocated to the res

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