HomeWattCost

Hawaiian Electric Schedule R vs Schedule TOU-R (ARD)

For a typical Hawaii home using 514 kWh a month, Schedule TOU-R (ARD) is cheaper by about $125 a year ($229 against $239 a month). Schedule R is cheaper below about 250 kWh a month and Schedule TOU-R (ARD) above it, with the same daily pattern of use.

Utility Hawaiian ElectricTariffs checked 2026-09-28Typical use 514 kWh/mo, Hawaii

Head to head

ScenarioSchedule RSchedule TOU-R (ARD)Cheaper
Typical home, per month$239$229Schedule TOU-R (ARD)
All-in price per kWh46.5¢44.5¢Schedule TOU-R (ARD)
Home + EV, charged at the cheapest hour$361$289Schedule TOU-R (ARD)
Home + EV, plugged in at 6 pm$361$408Schedule R
Fixed charge$15.30$21.13

Typical home: Hawaii 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 any hour on Schedule R, 9 am on Schedule TOU-R (ARD).

Month by month

Typical-home bill each month on each plan.

PlanJanFebMarAprMayJunJulAugSepOctNovDec
Schedule R$259$198$226$222$224$225$253$265$252$256$242$247
Schedule TOU-R (ARD)$249$194$217$213$215$215$240$251$239$242$230$237

Schedule R: price by hour

July weekday.

Same price all day
44.5¢12a3a6a9a12p3p6p9p12a

Schedule TOU-R (ARD): price by hour

July weekday.

Off-peakMid-peakPeak
43.7¢22.0¢65.3¢43.7¢12a3a6a9a12p3p6p9p12a

How the two plans work

Schedule R: Residential Service

  • In July the first 350 kWh a month cost 43.1¢ each; then 44.5¢ above 350 kWh a month, then 46.7¢ above 1,200 kWh a month.
  • An average Hawaii home (546 kWh in July) goes past the first tier, so extra load such as an EV is priced higher.
  • Fixed charge: $15.30 a month.
  • Minimum bill: $30.22 a month.

Schedule TOU-R (ARD): Residential Time-of-Use

  • Mid-peak 12 am–9 am, Peak 5 pm–9 pm, Mid-peak 9 pm–12 am on July weekdays; 4 of 24 hours carry the top price of 65.3¢.
  • The cheapest July weekday hour costs 22.0¢, so moving 1 kWh out of the top hours saves 43.3¢.
  • January weekdays range from 22.0¢ to 65.3¢.
  • Fixed charge: $21.13 a month.
  • Minimum bill: $30.22 a month.

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