HomeWattCost

EPB RS vs TRS

For a typical Tennessee home using 1,186 kWh a month, RS is cheaper by about $23 a year ($155 against $157 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 2026-11-03Typical use 1,186 kWh/mo, Tennessee

Head to head

ScenarioRSTRSCheaper
Typical home, per month$155$157RS
All-in price per kWh13.0¢13.2¢RS
Home + EV, charged at the cheapest hour$188$186TRS
Home + EV, plugged in at 6 pm$188$195RS
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$177$206$130$122$119$156$192$197$154$128$116$159
TRS$178$206$131$121$123$160$197$202$158$129$116$160

RS: price by hour

July weekday.

Same price all day
12.2¢12a3a6a9a12p3p6p9p12a

TRS: price by hour

July weekday.

Off-peakPeak
10.8¢20.5¢10.8¢12a3a6a9a12p3p6p9p12a

RS or TRS: common questions

Is RS or TRS cheaper?

For a typical Tennessee home using 1,186 kWh a month, RS is cheaper by about $23 a year ($155 against $157 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 ($186 against $188 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.

More EPB comparisons

How the two plans work

RS: EPB Base Rate Plan

  • One price per kWh at every hour, all year: 12.2¢.
  • 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 20.5¢.
  • The cheapest July weekday hour costs 10.8¢, so moving 1 kWh out of the top hours saves 9.7¢.
  • January weekdays range from 10.8¢ to 20.5¢.
  • 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.