Updated: March 2026
Commercial rate guide for APS — Northern and western Arizona plus portions of metropolitan Phoenix (west Valley). Largest electric utility in Arizona serving approximately 1.3 million customers.
E-32 (general service small), E-32 L (general service large), and E-32 TOU (time-of-use) rate schedules. Demand charges for accounts above 20 kW. Seasonal rate differentials with summer rates significantly higher.
Rising
7.2% rate increase effective January 2026 approved by AZ ACC for clean energy co
7.2% rate increase effective January 2026 approved by AZ ACC for clean energy compliance and grid hardening investments
Property managers with APS accounts frequently encounter these billing challenges:
Summer demand charges creating bill shock for properties with high cooling loads
Time-of-use rate complexity with multiple peak period options
Solar export compensation rate reductions
Demand ratchet provisions trapping summer peak charges into shoulder months
Grid access charges for commercial solar installations
The utility is the sole provider in this service territory.
Arizona is a regulated electric market. APS is a vertically integrated utility regulated by the Arizona Corporation Commission. No competitive supply choice for commercial customers.
Resource portfolio standard compliance plan under AZ ACC review; rate design reform for distributed generation customers
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