APS Cost-Shift Questions: What Arizona Homeowners Should Know

Arizona homeowners have a new reason to pay attention to their electricity bills. On October 9, 2026, Attorney General Kris Mayes asked the Arizona Corporation Commission to investigate whether APS’s Power Supply Adjuster shifted nearly $600 million in costs from large energy users to other customers. APS and the Commission’s executive director dispute the underlying analysis. The request does not establish that a cost shift occurred or that a new rate increase has been approved. For homeowners, the useful next step is to review what you can control: your current APS rate plan, when your home uses electricity, and which appliances you need during an outage. Gather 12 months of bills and available interval usage data before comparing battery quotes. Ask a qualified installer to explain potential savings after charging losses and equipment costs, identify the circuits that will be backed up, and estimate runtime under realistic loads. A properly designed battery may shift some grid purchases away from higher-cost hours and support selected loads during outages; it will not remove every utility charge or guarantee a lower total cost. Start with Backup Ready’s calculator at https://www.backupreadyarizona.com/backup-cost-calculator, then request a home-specific review through the Get My Arizona Battery Plan form. Source: Arizona Attorney General’s Office, October 9, 2026 — https://www.azag.gov/press-release/attorney-general-mayes-urges-arizona-corporation-commission-investigate-whether-aps