Interstate Power and Light Co electricity rates in Iowa, 2025
Interstate Power and Light Co’s 419,451 residential customers paid an average of 17.77¢ per kWh in 2025, 30% above the Iowa average of 13.62¢. The typical home used 739 kWh a month, for an average bill of $131.
- 17.77¢avg ¢/kWh (2025)−0.14¢ (-0.8%) vs 2024
- $131Avg monthly billIowa: $117
- 739 kWhAvg monthly useIowa: 861 kWh
- 419,451Residential customersFull-service utility
| Sector | Customers | Sales (MWh) | Revenue | ¢/kWh 2025 | ¢/kWh 2024 | Change |
|---|---|---|---|---|---|---|
| Residential | 419,451 | 3,721,680 | $661,272,000 | 17.77¢ | 17.90¢ | −0.14¢ (-0.8%) |
| Commercial | 85,846 | 4,127,001 | $621,320,000 | 15.05¢ | 13.42¢ | +1.64¢ (+12.2%) |
| Industrial | 1,201 | 6,064,629 | $530,608,000 | 8.75¢ | 8.19¢ | +0.56¢ (+6.9%) |
| All sectors | 506,498 | 13,913,310 | $1,813,200,000 | 13.03¢ | 12.27¢ | +0.77¢ (+6.2%) |
How Interstate Power and Light Co compares
- Iowa residential average, 2025: 13.62¢ per kWh, 861 kWh a month, $117 average bill. U.S. average: 17.23¢, 874 kWh, $151.
- Among 20 full-service utilities in Iowa with at least 1,000 residential customers, Interstate Power and Light Co ranks 20 of 20 from lowest to highest average price.
- Latest monthly figure: Iowa homes paid 17.06¢ per kWh in August 2026 (preliminary), against 15.48¢ in August 2025. Summer months often run higher than the annual average.
- From 2024 to 2025 this average fell 0.8%; the state average rose 1.7%.
- Interstate Power and Light Co is an investor-owned utility, a private company whose rates are set by the state utility commission. Balancing authority: MISO.
Where Interstate Power and Light Co serves
EIA lists 84 Iowa counties in its 2025 service territory: Adair, Adams, Allamakee, Appanoose, Benton, Black Hawk, Boone, Bremer, Buchanan, Buena Vista, Butler, Carroll, Cass, Cedar, Cerro Gordo, Cherokee, Chickasaw, Clarke, Clay, Clayton, Clinton, Dallas, Davis, Decatur, Delaware, Des Moines, Dickinson, Dubuque, Emmet, Fayette, Floyd, Franklin, Greene, Grundy, Guthrie, Hamilton, Hancock, Hardin, Henry, Howard, and 44 more.
641 ZIP codes are matched to Interstate Power and Light Co in NREL’s 2024 ZIP file: 50002, 50005, 50006, 50008, 50010, 50014, 50020, 50022, 50026, 50027, 50028, 50029, 50034, 50036, 50037, 50039, 50040, 50043, 50046, 50048, 50049, 50050, 50051, 50054, 50055, 50056, 50057, 50058, 50059, 50060, 50064, 50065, 50066, 50067, 50068, 50070, 50071, 50072, 50074, 50075, 50078, 50101, 50103, 50104, 50105, 50106, 50107, 50108, 50112, 50115, 50120, 50122, 50123, 50124, 50126, 50127, 50128, 50129, 50130, 50132, and 581 more. Utility boundaries do not follow ZIP lines, so a ZIP can have more than one provider.
Iowa full-service utilities with similar rates
| Provider | ¢/kWh | Avg bill | Customers |
|---|---|---|---|
| Prairie Energy Coop | 14.14¢ | $193 | 3,433 |
| Corridor Energy Cooperative | 14.18¢ | $126 | 30,992 |
| City of Independence (IA) | 14.45¢ | $98 | 2,737 |
| Butler County Rural Elec Coop (IA) | 14.50¢ | $209 | 3,903 |
| Eastern Iowa Light & Power Coop | 14.81¢ | $177 | 20,472 |
| Access Energy Coop | 14.81¢ | $163 | 8,890 |
| Consumers Energy Coop (IA) | 14.85¢ | $160 | 7,121 |
| MiEnergy Cooperative | 17.20¢ | $177 | 6,023 |
Sources
- U.S. Energy Information Administration, Annual Electric Power Industry Report, Form EIA-861, 2025 final data (f8612025.zip, file dated October 7, 2026): Sales to Ultimate Customers, Average Monthly Bill and Service Territory tables.
- EIA Form EIA-861, 2024 final data (f8612024.zip, file dated December 4, 2025), for the 2024 comparison.
- EIA Electric Power Monthly, Table 5.6.A (average price by state, August 2026 and August 2025; 2026 values are preliminary), file dated October 22, 2026.
- National Renewable Energy Laboratory via OpenEI, U.S. Electric Utility Companies and Rates: Look-up by Zipcode (2024) (investor-owned and other utilities, files dated November 10, 2025), used only to match ZIP codes to utilities.
Average price = residential revenue ÷ residential kWh sold, as reported to EIA. It includes fixed monthly charges, taxes passed through in revenue and seasonal tiers, averaged over the year. Your own rate depends on your tariff and usage.