HomeWattCost

EPB RS vs TRS

For a typical Tennessee home using 1,198 kWh a month, RS is cheaper by about $23 a year ($154 against $156 a month). RS is cheaper or about the same at every level of use from 200 to 2,500 kWh a month, with the same daily pattern of use.

Utility EPBTariffs checked 2026-09-28Typical use 1,198 kWh/mo, Tennessee

Head to head

ScenarioRSTRSCheaper
Typical home, per month$154$156RS
All-in price per kWh12.8¢13.0¢RS
Home + EV, charged at the cheapest hour$187$185TRS
Home + EV, plugged in at 6 pm$187$194RS
Fixed charge$9.81$9.81

Typical home: Tennessee 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, 12 am on TRS.

Month by month

Typical-home bill each month on each plan.

PlanJanFebMarAprMayJunJulAugSepOctNovDec
RS$174$202$128$120$117$153$189$198$155$128$117$161
TRS$175$202$129$119$121$157$193$203$159$130$117$161

RS: price by hour

July weekday.

Same price all day
12.0¢12a3a6a9a12p3p6p9p12a

TRS: price by hour

July weekday.

Off-peakPeak
10.6¢20.3¢10.6¢12a3a6a9a12p3p6p9p12a

RS or TRS: common questions

Is RS or TRS cheaper?

For a typical Tennessee home using 1,198 kWh a month, RS is cheaper by about $23 a year ($154 against $156 a month). RS is cheaper or about the same 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, TRS gives the lower total ($185 against $187 a month).

What is the difference between RS and TRS?

RS is flat: the same price at every hour, with a fixed charge of $9.81 a month. TRS is time-of-use (summer weekdays: Peak 3 pm–7 pm; lowest price 7 pm–3 pm next day), with a fixed charge of $9.81 a month.

How the two plans work

RS: EPB Base Rate Plan

  • One price per kWh at every hour, all year: 12.0¢.
  • Shifting use to other hours changes nothing on this plan; using less is the only lever.
  • Fixed charge: $9.81 a month.

TRS: EPB Time Shift Rate Plan

  • Peak 3 pm–7 pm on July weekdays; 4 of 24 hours carry the top price of 20.3¢.
  • The cheapest July weekday hour costs 10.6¢, so moving 1 kWh out of the top hours saves 9.7¢.
  • January weekdays range from 10.6¢ to 20.3¢.
  • Summer pricing applies Apr–Oct; winter pricing Nov–Mar.
  • Weekends differ: off-peak all day.
  • Fixed charge: $9.81 a month.

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