Interstate Power and Light Co: average rate and electric bill (2025)
Interstate Power and Light Co (investor-owned utility, Iowa) served 419,451 homes in 2025. The average customer used 739 kWh a month and paid $131, an average price of 17.8¢ per kWh including fixed charges, riders and taxes. That is 30% above the Iowa average of 13.6¢.
What a bill costs at Interstate Power and Light Co's average price
| Monthly usage | Estimated bill |
|---|---|
| 500 kWh | $89 |
| 1,000 kWh | $178 |
| 1,500 kWh | $267 |
The average price spreads fixed monthly charges over all kWh. At low usage your price per kWh is higher, at high usage lower. Your current tariff can differ from the 2025 average, especially after a rate case.
Calculate your bill · Heat pump vs furnace with this rate
Compare with other utilities in Iowa
| Name | ¢/kWh | Avg. bill |
|---|---|---|
| MidAmerican Energy Co | 11.2 | $93 |
| City of Ames | 12.1 | $72 |
| Corridor Energy Cooperative | 14.2 | $126 |
| Eastern Iowa Light & Power Coop | 14.8 | $177 |
| Interstate Power and Light Co | 17.8 | $131 |
Source: U.S. Energy Information Administration, Form EIA-861 annual data 2025 (released October 2026), utility ID 9417. Average price = residential revenue ÷ residential kWh sold; average bill = revenue ÷ customers ÷ 12.