HomeWattCost

Duke Energy Florida RS-1 vs RST-1

For a typical Florida home using 1,097 kWh a month, RS-1 is cheaper by about $46 a year ($168 against $172 a month). RS-1 is cheaper below about 1,600 kWh a month and RST-1 above it, with the same daily pattern of use.

Utility Duke Energy FloridaTariffs checked 2026-09-28Typical use 1,097 kWh/mo, Florida

Head to head

ScenarioRS-1RST-1Cheaper
Typical home, per month$168$172RS-1
All-in price per kWh15.3¢15.7¢RS-1
Home + EV, charged at the cheapest hour$211$201RST-1
Home + EV, plugged in at 6 pm$211$218RS-1
Fixed charge$14.35$14.35

Typical home: Florida 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, 12 am on RST-1.

Month by month

Typical-home bill each month on each plan.

PlanJanFebMarAprMayJunJulAugSepOctNovDec
RS-1$156$159$136$139$167$195$223$219$184$163$130$144
RST-1$160$163$142$146$173$198$224$219$187$168$135$147

RS-1: price by hour

July weekday.

Same price all day
15.4¢12a3a6a9a12p3p6p9p12a

RST-1: price by hour

July weekday.

Off-peakMid-peakPeak
10.8¢14.3¢17.9¢14.3¢12a3a6a9a12p3p6p9p12a

RS-1 or RST-1: common questions

Is RS-1 or RST-1 cheaper?

For a typical Florida home using 1,097 kWh a month, RS-1 is cheaper by about $46 a year ($168 against $172 a month). RS-1 is cheaper below about 1,600 kWh a month and RST-1 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, RST-1 gives the lower total ($201 against $211 a month).

What is the difference between RS-1 and RST-1?

RS-1 is tiered: the price per kWh rises with monthly use, with a fixed charge of $14.35 a month. RST-1 is time-of-use (summer weekdays: Mid-peak 6 am–6 pm, Peak 6 pm–9 pm, Mid-peak 9 pm–12 am; lowest price 12 am–6 am), with a fixed charge of $14.35 a month.

How the two plans work

RS-1: Residential Service

  • In July the first 1,000 kWh a month cost 13.5¢ each; then 15.4¢ above 1,000 kWh a month.
  • An average Florida home (1,477 kWh in July) goes past the first tier, so extra load such as an EV is priced higher.
  • Fixed charge: $14.35 a month.
  • Minimum bill: $30.00 a month.

RST-1: Residential Time-of-Use

  • Mid-peak 6 am–6 pm, Peak 6 pm–9 pm, Mid-peak 9 pm–12 am on July weekdays; 3 of 24 hours carry the top price of 17.9¢.
  • The cheapest July weekday hour costs 10.8¢, so moving 1 kWh out of the top hours saves 7.1¢.
  • January weekdays range from 10.8¢ to 17.9¢.
  • Summer pricing applies Mar–Nov; winter pricing Dec–Feb.
  • Weekends differ: Mid-peak 6 am–12 am.
  • Fixed charge: $14.35 a month.
  • Minimum bill: $30.00 a month.

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