What are Interstate Power and Light Co Optional Residential Time of Use Rg-5 (Wisconsin) peak hours and rates?
Optional Residential Time of Use Rg-5 (Wisconsin) from Interstate Power and Light Co is a time-of-use plan: electricity costs the most during peak hours (5 p.m.–9 p.m.) at about $0.18/kWh and the least off-peak at about $0.07/kWh. Shifting heavy usage out of the peak window lowers the bill.
Peak window
5 p.m.–9 p.m.
Peak price
18¢/kWh
Off-peak price
7¢/kWh
Fixed charge
$15.00/mo
The Optional Residential Time of Use Rg-5 (Wisconsin) day, hour by hour
Hover any hour for its exact price. Toggle season and day type.
Season 1
Jan–Feb, Dec
| Period | Hours | $/kWh |
|---|---|---|
| Peak | 5 p.m.–9 p.m. | $0.18 |
| Mid-Peak | 6 a.m.–5 p.m., 9 p.m.–11 p.m. | $0.14 |
| Off-Peak | 11 p.m.–6 a.m. | $0.07 |
Season 2
Mar–May, Sep–Nov
| Period | Hours | $/kWh |
|---|---|---|
| Peak | 6 a.m.–11 p.m. | $0.14 |
| Mid-Peak | 11 p.m.–6 a.m. | $0.07 |
Season 3
Jun–Aug
| Period | Hours | $/kWh |
|---|---|---|
| Peak | 11 a.m.–7 p.m. | $0.18 |
| Mid-Peak | 6 a.m.–11 a.m., 7 p.m.–11 p.m. | $0.14 |
| Off-Peak | 11 p.m.–6 a.m. | $0.07 |
Frequently asked questions
What are Interstate Power and Light Co Optional Residential Time of Use Rg-5 (Wisconsin) peak hours and rates? +
Optional Residential Time of Use Rg-5 (Wisconsin) from Interstate Power and Light Co is a time-of-use plan: electricity costs the most during peak hours (5 p.m.–9 p.m.) at about $0.18/kWh and the least off-peak at about $0.07/kWh. Shifting heavy usage out of the peak window lowers the bill.
When is the cheapest time to use electricity on Optional Residential Time of Use Rg-5 (Wisconsin)? +
The cheapest electricity on Interstate Power and Light Co Optional Residential Time of Use Rg-5 (Wisconsin) is during off-peak hours (11 p.m.–6 a.m.), at about 7¢/kWh. Shift EV charging, laundry, dishwashing, and pre-cooling into these hours to pay the least.
How much more is peak vs off-peak on Optional Residential Time of Use Rg-5 (Wisconsin)? +
Peak power costs about 18¢/kWh versus 7¢/kWh off-peak — a difference of about 10¢/kWh. Running a 5 kWh load (a load of laundry plus dishwasher) off-peak instead of at peak saves roughly $0.52.
Who offers Optional Residential Time of Use Rg-5 (Wisconsin)? +
Optional Residential Time of Use Rg-5 (Wisconsin) is a residential electricity plan from Interstate Power and Light Co (Interstate Power and Light Co).
About this data
Compiled by Optiwatt from the OpenEI U.S. Utility Rate Database (5dc45f675457a37b0cf6a94f). Representative — verify exact prices on your Interstate Power and Light Co bill or tariff sheet.
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Are you on the cheapest Interstate Power and Light Co plan?
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Data last updated June 18, 2026. Compiled by Energy Advisor from published utility tariffs.