Is RS or RTOU-2 cheaper?

RS and RTOU-2 cost about the same for a typical Kansas home (within $0 a year). RS is cheaper below about 1,150 kWh a month and RTOU-2 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, RTOU-2 gives the lower total ($168 against $178 a month).

What is the difference between RS and RTOU-2?

RS is tiered: the price per kWh rises with monthly use, with a fixed charge of $15.25 a month. RTOU-2 is time-of-use (summer weekdays: Peak 4 pm–8 pm; lowest price 8 pm–4 pm next day), with a fixed charge of $15.25 a month.

HomeWattCost

Evergy RS vs RTOU-2

RS and RTOU-2 cost about the same for a typical Kansas home (within $0 a year). RS is cheaper below about 1,150 kWh a month and RTOU-2 above it, with the same daily pattern of use.

Utility EvergyTariffs checked 2026-09-28Typical use 875 kWh/mo, Kansas

Head to head

Scenario	RS	RTOU-2	Cheaper
Typical home, per month	$140	$140	Tie
All-in price per kWh	16.0¢	16.0¢	RTOU-2
Home + EV, charged at the cheapest hour	$178	$168	RTOU-2
Home + EV, plugged in at 6 pm	$178	$189	RS
Fixed charge	$15.25	$15.25

Typical home: Kansas 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 RTOU-2.

Month by month

Typical-home bill each month on each plan.

Plan	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
RS	$156	$119	$113	$105	$123	$164	$213	$183	$141	$118	$108	$132
RTOU-2	$147	$112	$107	$100	$120	$176	$225	$196	$152	$113	$102	$125

RS: price by hour

July weekday.

Same price all day

RTOU-2: price by hour

July weekday.

Off-peakPeak

How the two plans work

RS: Residential Standard Service

In July the first 900 kWh a month cost 14.2¢ each; then 15.1¢ above 900 kWh a month.
An average Kansas home (1,364 kWh in July) goes past the first tier, so extra load such as an EV is priced higher.
Fixed charge: $15.25 a month.

RTOU-2: Residential Time of Use, Two-Period

Peak 4 pm–8 pm on July weekdays; 4 of 24 hours carry the top price of 31.7¢.
The cheapest July weekday hour costs 11.7¢, so moving 1 kWh out of the top hours saves 20.0¢.
January weekdays range from 9.6¢ to 14.2¢.
Summer pricing applies Jun–Sep; winter pricing Oct–May.
Weekends follow a different schedule from weekdays.
Fixed charge: $15.25 a month.

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