US Energy Price Monitorby KadoaUpdated weeklyStar on GitHub

NewInsight: Investor-owned utilities charge 23% more for power

Iowa

Alliant Energy (Interstate Power and Light) electricity rates

What homes pay Alliant Energy (Interstate Power and Light) for electricity, from EIA.

Investor-owned utility, 419,914 homes in Iowa. EIA lists it as Interstate Power and Light Co.

Headlines

Average price
18.4¢ a kWh
Up 3.0% on a year ago
Average bill
$136 a month
Up 4.0% on a year ago
Average use
743 kWh
A month. Iowa 848 kWh
Price rank in Iowa
1 of 2
1 is the most expensive

Over the 12 months to August 2026, Alliant Energy (Interstate Power and Light) homes paid 18.4¢ a kWh, against 14.2¢ across Iowa.

Alliant Energy (Interstate Power and Light) vs Iowa

Alliant Energy (Interstate Power and Light)Iowa
Average price, 12 months to August 202618.4¢14.2¢
Price in August 202621.5¢17.1¢
Average monthly bill, 12 months$136$120
Bill in August 2026$193$149
Average monthly use743 kWh848 kWh
Price change, past year+3.0%+4.9%
Price change since 2019+10.0%+14%

Electricity price

Average residential price a kilowatt-hour, by month.

Up to and including August 2026

Source: EIA-861M monthly utility survey. Revenue over kilowatt-hours sold, including fixed charges.

Average monthly bill

What an average home pays a month.

Up to and including August 2026

Source: EIA-861M monthly utility survey.