3 utilities compared · 42 plans · 415 ZIP codes
Electricity rates in Arizona
Not a state average. The same household, priced hour by hour for a year on the default plan at each utility we cover here — so the differences below are differences in the tariffs, not in how much anyone used.
What a year of electricity costs in Arizona
| Household | Uses | Median, per year | Cheapest utility | Dearest utility |
|---|---|---|---|---|
| Apartment One or two people, no central air, no electric heat | 4,866 kWh | $895 | $816 | $1,022 |
| Family home Three or four people with central air conditioning | 9,453 kWh | $1,547 | $1,379 | $1,853 |
| Home with an EV Same house, plus an electric car charging overnight | 13,103 kWh | $2,089 | $1,811 | $2,413 |
Median and range across the 3 utilities, each on the plan a household lands on by default. Estimates for comparing utilities against each other, not a prediction of any one bill; they exclude taxes, local surcharges and demand charges.
How much does where you live inside Arizona matter?
Run the same three-bedroom house with central air through the default residential plan at each of the 3 utilities we cover in Arizona, and the yearly bill lands between $1,379 at Salt River Project and $1,853 at Arizona Public Service; the median is $1,547. That $474 gap is for identical electricity, and it is set by nothing you chose: which utility's territory the house stands in. You cannot switch utilities. What you can do is make sure you are on the right plan at yours.
The utility is fixed by your address; the plan is not. At Arizona Public Service, the cheapest and dearest of its 5 comparable plans are $2,396 a year apart for the same house — more than the gap between Arizona's cheapest and dearest utilities. Put differently, the plan you pick at your own utility is worth more than the accident of which utility you have.
Every one of these utilities files at least one plan priced by the hour — 21 such plans in all. That makes Arizona a place where moving laundry, dishes or car charging into the cheap window changes the bill, provided you are on one of those plans; on a flat plan the clock is irrelevant.
Utility by utility
Cheapest first, for the family home. The last two columns are where the money is: how far the default plan sits from the cheapest one the same utility files.
| Utility | Plans | Default plan, a year | Cheapest plan | By the hour |
|---|---|---|---|---|
| Salt River Project E-23 Tier 1 BASIC PRICE PLAN FOR RESIDENTIAL SERVICE | 24 | $1,379 | $1,360 | 15 plans |
| Tucson Electric Power Residential Electric Service TRRES (Single Phase) | 12 | $1,547 | $1,425 | 4 plans |
| Arizona Public Service Time-of-Use 4pm-7pm Weekdays (R-TOU-E) | 6 | $1,853 | $1,778 | 2 plans |
Before you compare anything
- Should you switch to a time-of-use electricity plan?
A wide peak-to-off-peak gap is a lever, not a saving. Levers need something to move.
- How to compare electricity plans without getting it wrong
Six things that break a comparison, and the order to check them in.
- Electricity rates by state: what the filed tariffs actually say
Median rates from the tariffs themselves, not a state-level average.