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Tariff data · 2026-08-27
← Arizona Public Service Co · AZ

Time-of-Use 4pm-7pm Weekdays (R-TOU-E)

When does peak hit on Arizona Public Service Co’s Time-of-Use 4pm-7pm Weekdays? Peak hits 4pm–7pm every day, all year.

  • peak37.38¢
  • mid15.33¢
  • off-peak6.48¢
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Every hour of the year at this rate, drawn to scale — 24 hours across, 12 months deep, height is ¢/kWh. The tallest bar is 37.4¢ (May, 4pm), the shortest is 6.5¢ (Jan, 10am) — 5.8× apart.
Weekdays
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Weekends
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

What does Time-of-Use 4pm-7pm Weekdays cost a year?

HouseholdUsesA monthPer yearWorks out to
Apartment

One or two people, no central air, no electric heat

4,866 kWh$85$1,02221.0¢ / kWh
Family home

Three or four people with central air conditioning

9,453 kWh$154$1,85319.6¢ / kWh
Home with an EV

Same house, plus an electric car charging overnight

13,103 kWh$201$2,41318.4¢ / kWh

Estimates, not quotes. We run three made-up but realistic households through this tariff hour by hour for a full year — including the way air conditioning loads the afternoon and an EV loads the small hours. Your own bill depends on when you actually use electricity, which is exactly the thing a per-kWh number hides.

What you actually pay

PeriodRateApplies when
peak37.38¢4pm–7pm, May–October
mid35.53¢4pm–7pm, November–April
mid15.33¢7pm–10am, 3pm–4pm, midnight–midnight, November–April
mid15.33¢7pm–4pm, midnight–midnight, May–October
off-peak6.48¢10am–3pm, November–April

Plus a fixed charge of $0.458 per day — so longer months cost more before you use a single kWh.

Should you be on Time-of-Use 4pm-7pm Weekdays?

This is a time-of-use plan, which means the clock decides your bill as much as the meter does. At the worst hour you pay 35.5¢ a kWh; at the best hour, 6.5¢ — 5.5× apart for identical electricity.

That gap is worth real money only if you can move load into it. Every kilowatt-hour a day you shift from 4pm to 10am is about $106 a year. A dishwasher run is roughly 1.5 kWh; an EV commute charge is 8 to 12. If your day is fixed — you are home in the evening and the air conditioner runs when it runs — a plan like this costs you more, not less.

Before a single kilowatt-hour moves, this plan charges $167 a year in fixed fees. On the apartment above that is 16% of the whole bill; on the house with a car charging in it, 7%. Fixed charges are invisible in a cents-per-kWh comparison and they punish small users hardest — if you use very little electricity, the headline rate is the least important number on this page.

Expect the bill to move with the calendar. The same family home costs about $220 in July and $113 in February — a $107 spread driven by heating and cooling far more than by anything you chose. Budget against the July figure, not the average, and a summer bill stops being a surprise.

How it compares to Arizona Public Service’s other plans

Measured against the other residential plans this utility files, a family home lands 3rd cheapest of 5. The cheapest option, Fixed Energy Charge Plan (R-1) Medium Tier 2, would run about $76 a year less.

Other Arizona Public Service plans

Who can be on Arizona Public Service’s Time-of-Use 4pm-7pm Weekdays (R-TOU-E)?

Eligibility is not our judgement — it is written into the tariff Arizona Public Service filed. This is what that document says:

This rate schedule is available to all residential Customers, including Partial Requirements Customers with an on-site distributed generation system.

Quoted from the filed tariff. Your utility decides eligibility, not us; check with them before you switch.

If this is new to you

Where this comes from

Effective
2026-02-01

the date this tariff took effect

Covers
delivery + supply

the ZIP-code service map lists this territory as bundled, so the utility sells delivery and supply together

Enrollment
open to new customers

Tariff document: https://www.aps.com/-/media/APS/APSCOM-PDFs/Utility/Regulatory-and-Legal/Regulatory-Plan-Details-Tariffs/Residential/Service-Plans/Time-of-Use-4pm-7pmWeekdays_R-TOU-E.pdf