Which APS (Arizona Public Service) rate plan is cheapest?
For a home that uses 1,000 kWh a month on average, R-3 costs the least on this site's calculation: $1,824.59 a year, $478.47 less than TOU-E. The result depends on when you use electricity: compare the plans with your own usage before you switch.
- 4 plans
- Same hourly usage for each plan
- Rates checked October 15, 2026
Yearly cost of each APS (Arizona Public Service) plan
Each column is a home that uses that number of kWh a month on average (12,000 kWh a year in the middle column). The lowest cost in each column is in bold.
| Plan | 500 kWh a month | 750 kWh a month | 1,000 kWh a month | 1,500 kWh a month | 2,000 kWh a month |
|---|---|---|---|---|---|
| R-3Time-of-Use 4pm-7pm Weekdays with Demand Charge | $1,010.76 | $1,418.16 | $1,824.59 | $2,638.95 | $3,453.04 |
| R-1Fixed Energy Charge Plan | $1,201.89 | $1,705.03 | $2,207.69 | $3,212.96 | $4,218.22 |
| R-EVEV Overnight Charging 11pm-5am Weekdays ยท for some homes only | $1,248.39 | $1,774.73 | $2,300.68 | $3,352.40 | $4,404.23 |
| TOU-ETime-of-Use 4pm-7pm Weekdays | $1,249.53 | $1,776.55 | $2,303.06 | $3,355.97 | $4,408.94 |
R-3 is the cheapest plan at every usage in the table.
"For some homes only": the name of the plan says that it is for homes with an electric vehicle, a battery, a heat pump or other electric equipment. Read the eligibility rules in the tariff (on the plan page) before you change plans. This calculation does not include the extra kWh of an electric vehicle.
Month by month at 1,000 kWh a month
The same home has more kWh in summer and less in spring. Seasonal rates and time periods change which plan costs less in each month.
| Month | kWh | R-3 | R-1 | R-EV | TOU-E |
|---|---|---|---|---|---|
| November 2025 | 808 | $114.77 | $151.55 | $149.55 | $149.78 |
| December 2025 | 985 | $136.21 | $181.76 | $180.48 | $180.78 |
| January 2026 | 936 | $130.18 | $173.45 | $172.19 | $172.47 |
| February 2026 | 798 | $115.13 | $149.01 | $148.58 | $148.84 |
| March 2026 | 780 | $111.32 | $147.35 | $146.92 | $147.18 |
| April 2026 | 703 | $102.49 | $134.03 | $134.62 | $134.86 |
| May 2026 | 834 | $136.54 | $156.40 | $166.38 | $166.48 |
| June 2026 | 1,155 | $185.60 | $209.75 | $226.59 | $226.72 |
| July 2026 | 1,504 | $235.05 | $268.66 | $291.27 | $291.45 |
| August 2026 | 1,511 | $234.87 | $269.93 | $290.23 | $290.40 |
| September 2026 | 1,155 | $185.60 | $209.75 | $226.59 | $226.72 |
| October 2026 | 832 | $136.83 | $156.05 | $167.28 | $167.38 |
How we compare the plans
- The same usage for each plan. We use one typical hourly usage shape for a home: low use at night, a peak in the evening, more use in summer and a little more on weekends. Each plan gets the same kWh in the same hours, so the time-of-use periods of each plan get the kWh that a real home uses in those hours.
- Twelve months. The months November 2025 to October 2026, each calculated with the rates and riders in effect now (October 15, 2026). The yearly cost does not include future rate changes.
- Options. Each plan uses the default options on its calculator, for example the standard baseline territory, no discount program and the utility's own supply. A plan with a demand charge uses the highest hourly kW of the same usage in its demand hours.
- Not included. Taxes, city fees, discounts, solar and the extra kWh of an electric vehicle.
Your own usage is different. To compare the plans with your bill, use Compare plans on the APS (Arizona Public Service) calculator and type the kWh of each period. To compare with every hour of your last year, use your Green Button usage file.
The APS (Arizona Public Service) plans on this site
- APS (Arizona Public Service) R-3: Time-of-Use 4pm-7pm Weekdays with Demand Charge (effective March 8, 2024 (adjustors as of June 1, 2026))
- APS (Arizona Public Service) R-1: Fixed Energy Charge Plan (effective March 8, 2024 (adjustors as of June 1, 2026))
- APS (Arizona Public Service) R-EV: EV Overnight Charging 11pm-5am Weekdays (effective March 8, 2024 (adjustors as of June 1, 2026))
- APS (Arizona Public Service) TOU-E: Time-of-Use 4pm-7pm Weekdays (effective March 8, 2024 (adjustors as of June 1, 2026))
Which APS (Arizona Public Service) rate plan is cheapest?
For a home that uses 1,000 kWh a month on average, R-3 costs the least on this site's calculation: $1,824.59 a year, $478.47 less than TOU-E. The result depends on when you use electricity: compare the plans with your own usage before you switch.
Is a time-of-use plan cheaper on APS (Arizona Public Service)?
It depends on how much of your electricity you use in the peak hours. A home that moves use (laundry, dishwasher, EV charging) out of the peak hours saves more on a time-of-use plan. Type the kWh of each period from your bill, or use your hourly usage file, to compare with your own usage.
utilityratecalc.com is not part of APS (Arizona Public Service) or a state commission. The costs are estimates from the official tariffs. Your bill can be different.