HomeWattCost

Duke Energy Indiana RS vs RS TOU (Tariff No. 6.5)

For a typical Indiana home using 935 kWh a month, RS is cheaper by about $25 a year ($158 against $160 a month). RS TOU (Tariff No. 6.5) is cheaper below about 850 kWh a month and RS above it, with the same daily pattern of use.

Utility Duke Energy IndianaTariffs checked 2026-09-28Typical use 935 kWh/mo, Indiana

Head to head

ScenarioRSRS TOU (Tariff No. 6.5)Cheaper
Typical home, per month$158$160RS
All-in price per kWh16.9¢17.1¢RS
Home + EV, charged at the cheapest hour$194$185RS TOU (Tariff No. 6.5)
Home + EV, plugged in at 6 pm$194$220RS
Fixed charge$13.70$13.70

Typical home: Indiana 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 RS, 1 am on RS TOU (Tariff No. 6.5).

Month by month

Typical-home bill each month on each plan.

PlanJanFebMarAprMayJunJulAugSepOctNovDec
RS$192$179$141$125$128$159$196$184$148$130$136$180
RS TOU (Tariff No. 6.5)$200$186$135$118$127$161$206$190$148$127$135$188

RS: price by hour

July weekday.

Same price all day
12.6¢12a3a6a9a12p3p6p9p12a

RS TOU (Tariff No. 6.5): price by hour

July weekday.

Off-peakMid-peakPeak
14.6¢8.9¢14.6¢21.7¢14.6¢12a3a6a9a12p3p6p9p12a

How the two plans work

RS: Residential Service

  • In July the first 300 kWh a month cost 19.0¢ each; then 13.9¢ above 300 kWh a month, then 12.6¢ above 1,000 kWh a month.
  • An average Indiana home (1,225 kWh in July) goes past the first tier, so extra load such as an EV is priced higher.
  • Fixed charge: $13.70 a month.

RS TOU (Tariff No. 6.5): Residential Time-of-Use

  • Mid-peak 12 am–1 am, Mid-peak 5 am–6 pm, Peak 6 pm–10 pm, Mid-peak 10 pm–12 am on July weekdays; 4 of 24 hours carry the top price of 21.7¢.
  • The cheapest July weekday hour costs 8.9¢, so moving 1 kWh out of the top hours saves 12.8¢.
  • January weekdays range from 8.9¢ to 21.7¢.
  • Summer pricing applies Mar–Oct; winter pricing Nov–Feb.
  • Fixed charge: $13.70 a month.

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