Queen Creek, Arizona — Arizona Attorney General Kris Mayes requested that state utility regulators launch a formal inquiry into whether the state's largest power provider improperly transferred nearly $600 million in energy expenses from commercial data centers onto other utility customers across recent billing cycles.
In a formal letter delivered to Arizona Corporation Commission Chairman Nick Myers and fellow commissioners, Mayes pointed to regulatory docket filings submitted earlier this month by an independent utility analyst. That evaluation asserted that Arizona Public Service Company utilized its Power Supply Adjuster mechanism to allocate roughly $587 million in infrastructure and generation costs generated by massive industrial consumers to general system ratepayers across the 2023 to 2025 calendar years. The inquiry request lands as the utility actively petitions the regulatory commission for a separate annual rate adjustment totaling $608.7 million.
> "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. Before the Commission approves any APS rate increase, Arizonans deserve answers." — Attorney General Kris Mayes
