Iowa residential rate options

With the Summer Saver rate option, you can reduce the amount you pay for electricity during the summer months by limiting usage at key times.

We’ll bill electricity you use from 2-7 p.m. on weekdays in June, July and August at a premium on-peak rate, excluding Independence Day.

We’ll charge a lower off-peak rate at all other times on those days, as well as on weekends and in the months of September through May.

On your bill, we’ll list this rate as 407 - Electric Residential TOD.

Use our rate calculator to estimate your bill under this option.

The Night Owl rate option is best for customers who can use most of their energy between midnight and 8 a.m.

We charge the lowest rate year-round from midnight to 8 a.m. We charge the highest rate weekdays June 1-Aug. 31 from 2-7 p.m. We charge a medium rate all other times.

Your peak demand is the point during your monthly billing cycle when you use the most energy. It's the highest spike in your energy use. Your peak changes from month to month depending on how you use your energy.

The option looks at your highest peak demand during on-peak hours. You will see a demand charge and an energy charge on your bill. Demand charge is the peak demand multiplied by the demand rate. The energy charge is the kilowatt-hours (kWh) used during the billing month multiplied by the rate per kWh. If you can shift usage to off-peak hours, your average cost may be lower.

Demand hours

On-peak hours are between 7 a.m. and 8 p.m. Monday through Friday. All other hours and holidays are off-peak.

Energy hours

We’ll bill the electricity you use from 2-7 p.m. on weekdays in June, July and August at a higher on-peak rate, excluding Independence Day.

We’ll charge a lower off-peak rate all other times on those days, as well as on weekends and in the months of September through May.

On your bill, we’ll list this rate as 507 - Electric Residential TOD.

Check out this short video that explains your peak demand.