Wisconsin Power & Light Co · WI
When are Wisconsin Power & Light’s peak hours?
Wisconsin Power & Light’s peak hours are 5pm–9pm, December–February; 11am–7pm, June–August on all 4 of its time-of-use plans. Everything outside those hours is off-peak, apart from a mid-priced shoulder period. Weekends are off-peak all day.
At peak, Residential Service Demand Rd-1 charges 25.5¢ a kWh; off-peak it is 8.7¢ — 2.9× apart. Prices from the filed tariff.
These hours only apply if you are on a time-of-use plan. Wisconsin Power & Light’s default plan, Residential Service Rg-1 (Single Phase), charges one rate at every hour of the day. A household that never switched has no peak hours to avoid — and no cheap hours to use.
What the day looks like on Residential Service Demand Rd-1
- peak25.50¢
- mid17.50¢
- off-peak8.70¢
Full pricing, eligibility and the annual cost for three households: Residential Service Demand Rd-1 (Single Phase) →
Every Wisconsin Power & Light plan with peak hours
| Plan | Peak hours | Peak | Off-peak | Weekends |
|---|---|---|---|---|
| Residential Service Demand Rd-1 (Single Phase) | 5pm–9pm, December–February; 11am–7pm, June–August | 25.5¢ | 8.7¢ | off-peak all day |
| Residential Service Demand Rd-1 (Three Phase) | 5pm–9pm, December–February; 11am–7pm, June–August | 25.5¢ | 8.7¢ | off-peak all day |
| Residential Time-of-Use Rg-5 (Single Phase) | 5pm–9pm, December–February; 11am–7pm, June–August | 27.3¢ | 9.8¢ | off-peak all day |
| Residential Time-of-Use Rg-5 (Three Phase) | 5pm–9pm, December–February; 11am–7pm, June–August | 27.3¢ | 9.8¢ | off-peak all day |
Peak and off-peak are the highest and lowest energy prices on each plan; some plans add a shoulder price between them. Fixed monthly charges are not included here — they are on each plan’s page.
What is it worth to move a load out of peak?
On Residential Time-of-Use Rg-5, every kilowatt-hour a day you move from 5pm to midnight is worth about $64 a year in the month the gap is widest. An electric car charging 10 kWh a night, or a water heater on a timer, is the kind of load that actually moves.
When should you charge an electric car at home? →Where this comes from
Hours and prices are read from the tariff Wisconsin Power & Light filed with its regulator, as published in the NREL Utility Rate Database, and drawn the same way on every plan page. If your plan is not listed here, either it has no hourly pricing or its filing is too old or too partial for us to price honestly — we leave those out rather than guess.