Arizona time-of-use hours by utility
Every Arizona electric utility we track with at least one active time-of-use rate plan, with peak and off-peak hours verified against the published tariff. Periods only — no price values.
Every TOU schedule on this page verified since
Utilities in Arizona
Sorted by number of customers served in Arizona.
No utilities match those filters.
Resolve any Arizona ZIP in one call.
Utility + current period + next transition.
FAQ's
-
What are the typical time-of-use on-peak hours in Arizona?
Across the 19 residential TOU plans tou.tools tracks in Arizona, the most common on-peak window is 6 PM – 9 PM (9 plans); others run 6 AM – 9 AM and 3 PM – 7 PM. Every hour outside the on-peak (and any mid-peak) window is billed as off-peak. Exact boundaries vary by utility and plan — see each utility's schedule above.
-
Which electric utilities in Arizona offer time-of-use rate plans?
tou.tools tracks 8 Arizona utilities with at least one active TOU rate plan — 60 active schedules in total. The largest by customers served are APS (Arizona Public Service), Salt River Project, and Tucson Electric Power. They span investor-owned utilities, electric cooperatives, and political subdivisions. The full list above is sorted by customers served.
-
Do Arizona time-of-use peak hours apply on weekends?
On the residential TOU plans we track in Arizona, on-peak hours apply on weekdays only — weekends are off-peak across all 19 plans. Many tariffs also treat observed holidays as off-peak; the Days column in each schedule above shows the exact rule.
-
Do Arizona time-of-use hours change by season?
Some do. Of the 19 residential TOU plans we track in Arizona, 14 shift their period boundaries between seasons (typically summer and winter), while 5 keep the same hours year-round. Each schedule above lists its exact season dates.
-
When is the cheapest time to charge an EV in Arizona?
tou.tools tracks 8 EV-specific rate plans in Arizona (E-14, E-29, EGDCFCX, ERDSOTE, ERSOTE, R-EV, TGDCFCX, and TRDSOTE). On EV time-of-use plans the lowest-cost window is generally the overnight super-off-peak or off-peak period; charging then avoids the on-peak window. See the EV plan schedules for the exact hours.
-
How do I find which Arizona utility serves a specific address or ZIP code?
tou.tools maps 375 Arizona ZIP codes to the utilities that serve them. Because service territories can overlap, a ZIP may return more than one candidate utility; supplying a full street address resolves it to a single utility via a geocoded point-in-territory lookup. The REST API and MCP server both return the matching utility and its current TOU period.