How APS’s plans work
R-TOU-E (Time-of-Use 4pm-7pm Weekdays). Peak 4 pm–7 pm on July weekdays; 3 of 24 hours carry the top price of 37.1¢. The cheapest July weekday hour costs 15.0¢, so moving 1 kWh out of the top hours saves 22.1¢. January weekdays range from 6.2¢ to 35.2¢. Summer pricing applies May–Oct; winter pricing Nov–Apr. Weekends differ: off-peak all day. Fixed charge: $13.94 a month.
R-EV (Electric Vehicle Time-of-Use). Mid-peak 5 am–4 pm, Peak 4 pm–7 pm, Mid-peak 7 pm–11 pm on July weekdays; 3 of 24 hours carry the top price of 39.5¢. The cheapest July weekday hour costs 11.2¢, so moving 1 kWh out of the top hours saves 28.3¢. January weekdays range from 6.2¢ to 37.5¢. Summer pricing applies May–Oct; winter pricing Nov–Apr. Weekends differ: Mid-peak 12 am–12 am. Fixed charge: $13.94 a month.
R-1 (Tier 2) (Fixed Energy Charge Plan, Medium (Tier 2)). In July the first 401 kWh a month cost 17.4¢ each; then 16.8¢ above 401 kWh a month. An average Arizona home (1,711 kWh in July) goes past the first tier, so extra load such as an EV is priced higher. Fixed charge: $13.94 a month.
Prices on this page are all-in per kWh, before taxes: base rates, supply and every per-kWh rider in the utility’s current tariff sheets. Your bill shows them as separate lines, and riders can change between tariff revisions.
As a cross-check, APS billed its residential customers an average of 17.03¢ per kWh in 2025 (revenue ÷ sales, EIA-861). A plan taken from URDB is shown only if its all-in price is consistent with that figure, adjusted for Arizona’s price change since.