Arizona utility rate cases

Rates are set by the Arizona Corporation Commission. Households are represented by Residential Utility Consumer Office. The average Arizona home pays about $160 a month for 1,075 kWh (EIA, 2024).

2 pending rate cases

3 utilities tracked in Arizona. Enter your ZIP on the home page to see the one that serves you.

Utilities

Arizona Public Service investor-owned utility

1 pending about $26/mo if approved

Tucson Electric Power investor-owned utility

1 pending about $13/mo if approved

Salt River Project public utility district

1 on record, none pending

Pending, biggest first

2025 general rate case Arizona Public Service, AZ

Pending Base rate case

+$26a month, est.

2026 general rate case Tucson Electric Power, AZ

Pending Base rate case

+$13a month

Recent decisions

Project Blue data center energy service agreement Tucson Electric Power, AZ

Approved Rate matter Decided Dec 3, 2025

This is a service contract, not a residential rate change. The protections in it exist to keep the cost of serving the data center from shifting onto Tucson homes; whether they hold is the thing to watch in TEP's future rate cases.

no figure yet

FY2026 price plan change Salt River Project, AZ

On bills now Rate matter From Nov 2025

SRP is a public power district whose rates are set by its own elected board, not the Arizona Corporation Commission, so rate changes come through board votes rather than commission dockets.

+$6a month

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