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APS R-TOU-E vs R-EV

R-TOU-E and R-EV cost about the same for a typical Arizona home (within $15 a year). They stay within about 1% of each other at every level of use from 200 to 2,500 kWh a month, with the same daily pattern of use.

Utility APSTariffs checked 2026-09-28Typical use 1,054 kWh/mo, Arizona

Head to head

ScenarioR-TOU-ER-EVCheaper
Typical home, per month$200$199Tie
All-in price per kWh19.0¢18.8¢R-EV
Home + EV, charged at the cheapest hour$233$231R-EV
Home + EV, plugged in at 6 pm$274$277R-TOU-E
Fixed charge$13.94$13.94

Typical home: Arizona average use by month (EIA), shaped hour by hour (NREL ResStock), before taxes. EV: Tesla Model Y Long Range AWD, 1,000 miles a month; cheapest start 10 am on R-TOU-E, 10 am on R-EV.

R-EV is an EV or electrification rate: check the eligibility rules on APS’s tariff before switching.

Month by month

Typical-home bill each month on each plan.

PlanJanFebMarAprMayJunJulAugSepOctNovDec
R-TOU-E$136$118$157$153$210$279$323$338$252$173$129$131
R-EV$135$117$156$153$209$278$321$335$250$172$128$129

R-TOU-E: price by hour

July weekday.

Off-peakPeak
15.0¢37.1¢15.0¢12a3a6a9a12p3p6p9p12a

R-EV: price by hour

July weekday.

Off-peakMid-peakPeak
11.2¢15.0¢39.5¢15.0¢11.2¢12a3a6a9a12p3p6p9p12a

R-TOU-E or R-EV: common questions

Is R-TOU-E or R-EV cheaper?

R-TOU-E and R-EV cost about the same for a typical Arizona home (within $15 a year). They stay within about 1% of each other at every level of use from 200 to 2,500 kWh a month, with the same daily pattern of use. Adding an EV driven 1,000 miles a month and charged at each plan’s cheapest hour, R-EV gives the lower total ($231 against $233 a month).

What is the difference between R-TOU-E and R-EV?

R-TOU-E is time-of-use (summer weekdays: Peak 4 pm–7 pm; lowest price 7 pm–4 pm next day), with a fixed charge of $13.94 a month. R-EV is time-of-use (summer weekdays: Mid-peak 5 am–4 pm, Peak 4 pm–7 pm, Mid-peak 7 pm–11 pm; lowest price 11 pm–5 am next day), with a fixed charge of $13.94 a month.

More APS comparisons

How the two 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.

Your own pattern of use decides the winner: compare every APS plan on your usage, or see all APS plans, sources and peak hours.