HomeWattCost

MLGW RS vs RS TOU

For a typical Tennessee home using 1,186 kWh a month, RS TOU is cheaper by about $54 a year ($156 against $160 a month). RS TOU 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 MLGWTariffs checked 2026-11-04Typical use 1,186 kWh/mo, Tennessee

Head to head

ScenarioRSRS TOUCheaper
Typical home, per month$160$156RS TOU
All-in price per kWh13.5¢13.1¢RS TOU
Home + EV, charged at the cheapest hour$194$185RS TOU
Home + EV, plugged in at 6 pm$194$190RS TOU
Fixed charge$15.10$15.10

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 RS TOU.

Month by month

Typical-home bill each month on each plan.

PlanJanFebMarAprMayJunJulAugSepOctNovDec
RS$181$209$135$124$122$165$202$207$164$130$119$164
RS TOU$173$198$128$112$110$172$210$215$170$117$107$156

RS: price by hour

July weekday.

Same price all day
12.5¢12a3a6a9a12p3p6p9p12a

RS TOU: price by hour

July weekday.

Off-peakPeak
10.6¢20.5¢10.6¢12a3a6a9a12p3p6p9p12a

RS or RS TOU: common questions

Is RS or RS TOU cheaper?

For a typical Tennessee home using 1,186 kWh a month, RS TOU is cheaper by about $54 a year ($156 against $160 a month). RS TOU 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, RS TOU gives the lower total ($185 against $194 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 $15.10 a month. RS TOU is time-of-use (summer weekdays: Peak 1 pm–7 pm; lowest price 7 pm–1 pm next day), with a fixed charge of $15.10 a month.

How the two plans work

RS: Residential Standard

  • In July every kWh costs about 12.6¢, whatever the month's use.
  • Fixed charge: $15.10 a month.

RS TOU: Residential Time-of-Use

  • Peak 1 pm–7 pm on July weekdays; 6 of 24 hours carry the top price of 20.5¢.
  • The cheapest July weekday hour costs 10.6¢, so moving 1 kWh out of the top hours saves 9.9¢.
  • January weekdays range from 10.6¢ to 14.7¢.
  • Weekends differ: off-peak all day.
  • Fixed charge: $15.10 a month.

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