Arizona Public Service Co · AZ
When are Arizona Public Service’s peak hours?
Arizona Public Service’s peak hours are 4pm–7pm, May–October on all 3 of its time-of-use plans. Everything outside those hours is off-peak, apart from a mid-priced shoulder period.
At peak, Residential Electric Vehicle Time-of-Use charges 39.8¢ a kWh; off-peak it is 6.5¢ — 6.1× apart. Prices from the filed tariff.
What the day looks like on Residential Electric Vehicle Time-of-Use
- peak39.81¢
- mid15.33¢
- off-peak6.48¢
Full pricing, eligibility and the annual cost for three households: Residential Electric Vehicle Time-of-Use (R-EV) →
Every Arizona Public Service plan with peak hours
| Plan | Peak hours | Peak | Off-peak | Weekends |
|---|---|---|---|---|
| Residential Electric Vehicle Time-of-Use (R-EV) | 4pm–7pm, May–October | 39.8¢ | 6.5¢ | partly priced |
| Time-of-Use 4pm-7pm Weekdays (R-TOU-E) | 4pm–7pm, May–October | 37.4¢ | 6.5¢ | partly priced |
| Time-of-Use 4pm-7pm Weekdays with Demand Charge (R-3) | 4pm–7pm, May–October | 17.2¢ | 6.5¢ | partly priced |
Peak and off-peak are the highest and lowest energy prices on each plan; some plans add a shoulder price between them. Fixed monthly charges are not included here — they are on each plan’s page.
What is it worth to move a load out of peak?
On Residential Electric Vehicle Time-of-Use, every kilowatt-hour a day you move from 4pm to 10am is worth about $114 a year in the month the gap is widest. An electric car charging 10 kWh a night, or a water heater on a timer, is the kind of load that actually moves.
When should you charge an electric car at home? →Where this comes from
Hours and prices are read from the tariff Arizona Public Service filed with its regulator, as published in the NREL Utility Rate Database, and drawn the same way on every plan page. If your plan is not listed here, either it has no hourly pricing or its filing is too old or too partial for us to price honestly — we leave those out rather than guess.