WPS peak hours and cheapest times
What are WPS’s peak hours?
It depends on the plan. Rg5-OTOU: Mid-peak 7 am–1 pm, Peak 1 pm–7 pm, Mid-peak 7 pm–10 pm, on weekdays, in summer (in winter: Mid-peak 7 am–4 pm, Peak 4 pm–8 pm, Mid-peak 8 pm–10 pm); weekends: off-peak all day. Hours are local clock time.
When is electricity cheapest on WPS?
On summer weekdays the lowest price is Rg5-OTOU: 10 pm–7 am next day at 8.5¢/kWh, against 33.8¢ at the peak. Rg-1 charges the same price at every hour.
Which WPS plan is cheapest?
For a typical Wisconsin home using 664 kWh a month, Rg-1 at about $117 a month (17.6¢/kWh all-in, before taxes). With an EV charged at its cheapest hour, Rg5-OTOU gives the lowest total.
Charging an EV on WPS
1,000 miles a month in a Tesla Model Y Long Range AWD (275 kWh from the wall, EPA 27.5 kWh/100 mi) at 7.2 kW, added to a typical Wisconsin home’s use, on each plan’s cheapest start hour versus plugging in at 6 pm. Averaged over the year.
| Plan | Best start | Charging, best start | Charging from 6 pm | Whole bill with EV |
|---|
| Rg-1 | Any | $41/mo | $41/mo | $158/mo |
| Rg5-OTOU | 12 am | $23/mo | $70/mo | $142/mo |
With an EV charged at its best hour, the cheapest plan overall is Rg5-OTOU. Compare plans on your own usage.
How WPS’s 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.
Prices on this page are all-in per kWh, before taxes: base rates, supply and every per-kWh rider in the utility’s current tariff sheets. Your bill shows them as separate lines, and riders can change between tariff revisions.
As a cross-check, WPS billed its residential customers an average of 16.23¢ per kWh in 2024 (revenue ÷ sales, EIA-861). A plan taken from URDB is shown only if its all-in price is consistent with that figure, adjusted for Wisconsin’s price change since.