HomeWattCost

WPS Rg-1 vs Rg5-OTOU

For a typical Wisconsin home using 664 kWh a month, Rg-1 is cheaper by about $20 a year ($117 against $119 a month). Rg-1 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 WPSTariffs checked 2026-09-28Typical use 664 kWh/mo, Wisconsin

Head to head

ScenarioRg-1Rg5-OTOUCheaper
Typical home, per month$117$119Rg-1
All-in price per kWh17.6¢17.9¢Rg-1
Home + EV, charged at the cheapest hour$158$142Rg5-OTOU
Home + EV, plugged in at 6 pm$158$189Rg-1
Fixed charge$17.93$17.93

Typical home: Wisconsin 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 Rg-1, 12 am on Rg5-OTOU.

Month by month

Typical-home bill each month on each plan.

PlanJanFebMarAprMayJunJulAugSepOctNovDec
Rg-1$135$113$111$100$100$114$153$132$108$102$105$131
Rg5-OTOU$130$109$107$97$108$122$165$141$115$100$102$128

Rg-1: price by hour

July weekday.

Same price all day
14.9¢12a3a6a9a12p3p6p9p12a

Rg5-OTOU: price by hour

July weekday.

Off-peakMid-peakPeak
8.5¢14.9¢33.8¢14.9¢8.5¢12a3a6a9a12p3p6p9p12a

Rg-1 or Rg5-OTOU: common questions

Is Rg-1 or Rg5-OTOU cheaper?

For a typical Wisconsin home using 664 kWh a month, Rg-1 is cheaper by about $20 a year ($117 against $119 a month). Rg-1 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, Rg5-OTOU gives the lower total ($142 against $158 a month).

What is the difference between Rg-1 and Rg5-OTOU?

Rg-1 is flat: the same price at every hour, with a fixed charge of $17.93 a month. Rg5-OTOU is time-of-use (summer weekdays: Mid-peak 7 am–1 pm, Peak 1 pm–7 pm, Mid-peak 7 pm–10 pm; lowest price 10 pm–7 am next day), with a fixed charge of $17.93 a month.

How the two plans work

Rg-1: Residential Service

  • One price per kWh at every hour, all year: 14.9¢.
  • Shifting use to other hours changes nothing on this plan; using less is the only lever.
  • Fixed charge: $17.93 a month.

Rg5-OTOU: Residential Three-tier Optional Time-of-Use

  • Mid-peak 7 am–1 pm, Peak 1 pm–7 pm, Mid-peak 7 pm–10 pm on July weekdays; 6 of 24 hours carry the top price of 33.8¢.
  • The cheapest July weekday hour costs 8.5¢, so moving 1 kWh out of the top hours saves 25.3¢.
  • January weekdays range from 8.5¢ to 33.8¢.
  • Summer pricing applies May–Sep; winter pricing Oct–Apr.
  • Weekends differ: off-peak all day.
  • Fixed charge: $17.93 a month.

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