Energy Advisor
Interstate Power and Light Co · Time-of-Use

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.

12 AM6 AMnoon6 PM11 PM
Peak Mid-Peak Off-Peak

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.

Are you on the cheapest Interstate Power and Light Co plan?

Ask the free Energy Advisor about Optional Residential Time of Use Rg-5 (Wisconsin), or upload a bill right here to check your real usage against every Interstate Power and Light Co plan.

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Data last updated June 18, 2026. Compiled by Energy Advisor from published utility tariffs.