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Electricity rates — Westar Energy Inc

A household served by Westar Energy Inc using 1,000 kWh a month pays about $1,231.02 a year on the cheapest of 4 generally available plans — RTOU-2 (Residential Time of Use Two-Period) from Westar Energy Inc, in effect since May 2025. Rates checked September 23, 2026. A further 4 restricted and 2 older schedules are priced further down but not ranked.

Every priced plan, 1,000 kWh/mo

Annual cost of each published plan, 1,000 kWh/mo, cheapest first
PlanPer yearvs cheapestEffective
REV (Residential Electric Vehicle)demand charge · in effect since May 2025 · needs an electric vehicle$1,045.63−$185.398.7¢
Restricted Conservation Use Service; Closed Rateflat rate · in effect since July 2014 · closed to new customers$1,210.44−$20.5810.1¢
RTOU-2 (Residential Time of Use Two-Period)✓ cheapesttime-of-use · in effect since May 2025$1,231.0210.3¢
Restricted Peak Managemet Electric Service; Closed Ratedemand charge · in effect since July 2014 · closed to new customers$1,235.44+$4.4210.3¢
RD (Residential Demand Service)priced by season · demand charge · in effect since May 2025$1,279.80+$48.7810.7¢
Residential - Standard Distributed Generationdemand charge · in effect since August 2019 · older schedule, not ranked$1,291.03+$60.0110.8¢
TOU (Time of Use)time-of-use · in effect since May 2025$1,403.88+$172.8611.7¢
RS (Residential Standard Service)priced by season · tiered · in effect since May 2025$1,503.72+$272.7012.5¢
Residentialpriced by season · tiered · in effect since January 2023 · older schedule, not ranked$1,525.08+$294.0612.7¢
Time of Use - Pilottime-of-use · in effect since August 2019 · pilot programme$1,539.13+$308.1112.8¢

Cost across usage levels

The cheapest plan at each consumption level, showing whether the ranking holds as usage changes.

  • 500 kWh/mo — cheapest $701.00 (RTOU-2 (Residential Time of Use Two-Period)), dearest $841.68, a $140.68 spread
  • 1,000 kWh/mo — cheapest $1,231.02 (RTOU-2 (Residential Time of Use Two-Period)), dearest $1,503.72, a $272.70 spread
  • 2,000 kWh/mo — cheapest $2,291.02 (RTOU-2 (Residential Time of Use Two-Period)), dearest $2,758.20, a $467.18 spread

What a typical bill costs

At 1,000 kWh a month the 4 generally available plans here run from $1,231.02 on RTOU-2 (Residential Time of Use Two-Period) to $1,503.72 on RS (Residential Standard Service), with a median of $1,341.84.

Effective rates, bill divided by kilowatt-hours, span 10.3¢ to 12.5¢ per kWh at that usage.

What Westar Energy Inc's customers were billed in 2024

At 846 kWh a month, Westar Energy Inc's median open plan comes to 11.4¢ per kWh, 20% below the 14.3¢ its customers were billed in 2024, riders included. Rates set since 2024 account for some of that.

EIA-861 figures for Evergy Kansas Central, Inc, 2024, and this page’s plans at the same use
Ownership, as EIA classes itInvestor-owned
Full-service homes in Kansas341,806
Share of Kansas's households26%
Average use per home846 kWh a month
Average bill per home$120.85 a month
Billed per kWh, riders included14.3¢
Median open plan here, at that use11.4¢

Evergy Kansas Central, Inc in U.S. Energy Information Administration, Form EIA-861, 2024 (Sales_Ult_Cust_2024.xlsx), retrieved September 23, 2026.

How it compares

Among the 109 utilities indexed, Westar Energy Inc's cheapest open plan is the 15th-lowest, 25% less than their median of $1,649.16. It sits between Sawnee Electric Membership Corporation ($1,224.00) and Ohio Power Co ($1,232.40).

RS (Residential Standard Service) is tiered: past 900 kWh a month, each kWh costs 1.5¢ less. Of the 51 utilities whose plans step, that is the 20th-smallest step.

RD (Residential Demand Service) changes price with the season: a kWh costs 6.7¢ more in June to September than in October to May, and the same 1,000 kWh is billed $156.99 in its dearest month against $81.52 in its cheapest.

In the guides: The price that changes once the meter passes a line · The price that changes with the month

How the answer changes with usage

RTOU-2 (Residential Time of Use Two-Period) is cheapest at every level tested — $701.00 a year at 500 kWh a month, $2,291.02 at 2,000 kWh.

The penalty for a poor choice grows with usage: $140.68 a year at 500 kWh against $467.18 at 2,000 kWh.

Cheapest 6 plans at 1,000 kWh a month

REV (Residential Electric Vehicle) — $1,045.63 a year, 8.7¢ per kWh effective, demand-charged. It carries a $14.50 monthly standing charge. In effect since May 2025. Restricted: needs an electric vehicle.

Restricted Conservation Use Service; Closed Rate — $1,210.44 a year, 10.1¢ per kWh effective, flat rate. It carries a $12.00 monthly standing charge. In effect since July 2014. Too old to quote as a current price.

RTOU-2 (Residential Time of Use Two-Period) — $1,231.02 a year, 10.3¢ per kWh effective, time-of-use. It carries a $14.25 monthly standing charge. In effect since May 2025.

Restricted Peak Managemet Electric Service; Closed Rate — $1,235.44 a year, 10.3¢ per kWh effective, demand-charged. It carries a $14.00 monthly standing charge. In effect since July 2014. Too old to quote as a current price.

RD (Residential Demand Service) — $1,279.80 a year, 10.7¢ per kWh effective, priced by season and demand-charged. It carries a $14.25 monthly standing charge. In effect since May 2025.

Residential - Standard Distributed Generation — $1,291.03 a year, 10.8¢ per kWh effective, demand-charged. It carries a $14.50 monthly standing charge. In effect since August 2019. Too old to quote as a current price.

How these plans are structured

Of 10 priceable plans: 2 tiered, 3 time-of-use, 3 priced by season, 4 with demand charges, 1 flat-rate.

Fixed monthly charges run from $12.00 to $14.50.

Who provides these plans

EIA-861 lists Westar Energy Inc serving homes in Kansas and in no other state, which is how its plans are placed there. 10 of its 10 published residential schedules can be priced.

The largest saving available here

Moving from RS (Residential Standard Service) to RTOU-2 (Residential Time of Use Two-Period) saves $272.70 a year at 1,000 kWh a month, with no change in consumption.

What this does not cover

3 of these plans price by the hour, so their figures are marked lower confidence.

New to these terms? The methodology page explains tiered bands, time-of-use periods and fixed charges, and sets out exactly what the rate engine assumes.

Estimate — your actual bill may differ.

Tariff structures from NREL/OpenEI Utility Rate Database (CC0 1.0), retrieved September 23, 2026.