Electricity in Polk County, Iowa
4 electric utilities serve homes in Polk County, Iowa: MidAmerican Energy, Alliant Energy (Interstate Power and Light), Midland Power Cooperative and Consumers Energy Cooperative. In 2025, the average home bill of these utilities was $92.85 (MidAmerican Energy) to $202.01 (Midland Power Cooperative) a month. This page covers 4 cities with 25,000 or more people in the county, from Ankeny to Johnston.
- 4 cities
- 4 utilities
- EIA and Census data, 2025
Electric utilities in Polk County
EIA lists utilities by county, not by address. Your address has one utility: its name is on your bill, or type your ZIP code in the utility finder.
| Utility | Homes in Iowa | Average bill 2025 | 1,000 kWh now |
|---|---|---|---|
| MidAmerican EnergyInvestor-owned utility · bill calculator | 639,558 | $92.85828 kWh, 11.2¢ | $106.69 |
| Alliant Energy (Interstate Power and Light)Investor-owned utility · bill calculator | 419,451 | $131.38739 kWh, 17.8¢ | $175.33 |
| Midland Power CooperativeElectric cooperative | 12,083 | $202.011,479 kWh, 13.7¢ | — |
| Consumers Energy CooperativeElectric cooperative | 7,121 | $160.491,081 kWh, 14.8¢ | — |
1 smaller utility with fewer than 1,000 homes is also listed in the county. The average bill is the 2025 average of each utility's homes that bought their power from it (EIA-861). The Iowa average was $117.30 a month.
Cities in Polk County
| City | People | City-owned utility | Solar kWh a year per kW |
|---|---|---|---|
| Ankeny | 77,833 | — | 1,380 |
| West Des Moines | 74,224 | — | 1,357 |
| Urbandale | 48,570 | — | 1,403 |
| Johnston | 25,065 | — | 1,389 |
A city-owned utility is a municipal utility in the county with the city's name (EIA data). Solar output: PVWatts version 8 for a south-facing roof; see the solar savings calculator.
More about Iowa: Iowa electric rates, all Iowa utilities, home energy rebates and natural gas bills.
Who provides electricity in Polk County?
4 electric utilities serve homes in Polk County, Iowa: MidAmerican Energy, Alliant Energy (Interstate Power and Light), Midland Power Cooperative and Consumers Energy Cooperative. The name of your utility is on your bill.
Which cities in Polk County are on this page?
Ankeny, West Des Moines, Urbandale and Johnston.
Sources: EIA-861 data, 2025 (utilities by county, homes and average bills); Census Bureau city population estimates, Vintage 2025; PVWatts (National Laboratory of the Rockies).