HomeWattCost

Duke Energy Indiana RS vs RS TOU

For a typical Indiana home using 929 kWh a month, RS is cheaper by about $23 a year ($161 against $163 a month). RS TOU is cheaper below about 950 kWh a month and RS above it, with the same daily pattern of use.

Utility Duke Energy IndianaTariffs checked 2026-10-29Typical use 929 kWh/mo, Indiana

Head to head

ScenarioRSRS TOUCheaper
Typical home, per month$161$163RS
All-in price per kWh17.3¢17.5¢RS
Home + EV, charged at the cheapest hour$198$188RS TOU
Home + EV, plugged in at 6 pm$198$224RS
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.

Month by month

Typical-home bill each month on each plan.

PlanJanFebMarAprMayJunJulAugSepOctNovDec
RS$196$183$144$127$131$163$201$186$149$131$137$182
RS TOU$205$190$138$121$129$165$210$192$149$128$136$189

RS: price by hour

July weekday.

Same price all day
13.0¢12a3a6a9a12p3p6p9p12a

RS TOU: price by hour

July weekday.

Off-peakMid-peakPeak
15.0¢9.3¢15.0¢22.1¢15.0¢12a3a6a9a12p3p6p9p12a

RS or RS TOU: common questions

Is RS or RS TOU cheaper?

For a typical Indiana home using 929 kWh a month, RS is cheaper by about $23 a year ($161 against $163 a month). RS TOU is cheaper below about 950 kWh a month and RS above it, with the same daily pattern of use. Adding an EV driven 1,000 miles a month and charged at each plan’s cheapest hour, RS TOU gives the lower total ($188 against $198 a month).

What is the difference between RS and RS TOU?

RS is tiered: the price per kWh rises with monthly use, with a fixed charge of $13.70 a month. RS TOU is time-of-use (summer weekdays: Mid-peak 12 am–1 am, Mid-peak 5 am–6 pm, Peak 6 pm–10 pm, Mid-peak 10 pm–12 am; lowest price 1 am–5 am), with a fixed charge of $13.70 a month.

How the two plans work

RS: Residential Service

  • In July the first 300 kWh a month cost 19.3¢ each; then 14.3¢ above 300 kWh a month, then 13.0¢ 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: 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 22.1¢.
  • The cheapest July weekday hour costs 9.3¢, so moving 1 kWh out of the top hours saves 12.8¢.
  • January weekdays range from 9.3¢ to 22.1¢.
  • 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.