HomeWattCost

Evergy Missouri West RPKA vs RTOU-3

For a typical Missouri home using 1,041 kWh a month, RTOU-3 is cheaper by about $27 a year ($137 against $140 a month). RTOU-3 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 Evergy Missouri WestTariffs checked 2026-09-28Typical use 1,041 kWh/mo, Missouri

Head to head

ScenarioRPKARTOU-3Cheaper
Typical home, per month$140$137RTOU-3
All-in price per kWh13.4¢13.2¢RTOU-3
Home + EV, charged at the cheapest hour$168$148RTOU-3
Home + EV, plugged in at 6 pm$173$196RPKA
Fixed charge$12.90$12.90

Typical home: Missouri 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 12 am on RPKA, 12 am on RTOU-3.

Month by month

Typical-home bill each month on each plan.

PlanJanFebMarAprMayJunJulAugSepOctNovDec
RPKA$153$129$110$97$104$171$216$199$155$102$104$136
RTOU-3$148$124$104$90$107$173$215$199$158$101$97$133

RPKA: price by hour

July weekday.

Off-peakMid-peakPeak
14.0¢15.1¢16.2¢15.1¢12a3a6a9a12p3p6p9p12a

RTOU-3: price by hour

July weekday.

Off-peakMid-peakPeak
4.2¢12.7¢29.9¢12.7¢12a3a6a9a12p3p6p9p12a

RPKA or RTOU-3: common questions

Is RPKA or RTOU-3 cheaper?

For a typical Missouri home using 1,041 kWh a month, RTOU-3 is cheaper by about $27 a year ($137 against $140 a month). RTOU-3 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, RTOU-3 gives the lower total ($148 against $168 a month).

What is the difference between RPKA and RTOU-3?

RPKA is time-of-use (summer weekdays: Mid-peak 6 am–4 pm, Peak 4 pm–8 pm, Mid-peak 8 pm–12 am; lowest price 12 am–6 am), with a fixed charge of $12.90 a month. RTOU-3 is time-of-use (summer weekdays: Mid-peak 6 am–4 pm, Peak 4 pm–8 pm, Mid-peak 8 pm–12 am; lowest price 12 am–6 am), with a fixed charge of $12.90 a month.

How the two plans work

RPKA: Residential Peak Adjustment Service (Default Time Based Plan)

  • Mid-peak 6 am–4 pm, Peak 4 pm–8 pm, Mid-peak 8 pm–12 am on July weekdays; 4 of 24 hours carry the top price of 16.2¢.
  • The cheapest July weekday hour costs 14.0¢, so moving 1 kWh out of the top hours saves 2.2¢.
  • January weekdays range from 8.5¢ to 9.9¢.
  • Summer pricing applies Jun–Sep; winter pricing Oct–May.
  • Fixed charge: $12.90 a month.

RTOU-3: Residential High Differential Time of Use (Nights & Weekends Max Plan)

  • Mid-peak 6 am–4 pm, Peak 4 pm–8 pm, Mid-peak 8 pm–12 am on July weekdays; 4 of 24 hours carry the top price of 29.9¢.
  • The cheapest July weekday hour costs 4.2¢, so moving 1 kWh out of the top hours saves 25.7¢.
  • January weekdays range from 3.5¢ to 23.1¢.
  • Summer pricing applies Jun–Sep; winter pricing Oct–May.
  • Weekends differ: Mid-peak 6 am–12 am.
  • Fixed charge: $12.90 a month.

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