Electricity in Mason City, Iowa
5 electric utilities serve homes in Cerro Gordo County, where Mason City is: MidAmerican Energy, Alliant Energy (Interstate Power and Light), Heartland Power Cooperative, Butler County Rural Electric Cooperative and Prairie Energy Cooperative. The name of your utility is on your bill. In 2025, the average home bill of these utilities was $92.85 (MidAmerican Energy) to $208.64 (Butler County Rural Electric Cooperative) a month. The Iowa average was $117.30.
- 26,853 people (2025 estimate)
- Cerro Gordo County
- EIA data, 2025
Electric utilities in Mason City
EIA lists utilities by county, not by city. These utilities serve homes in Cerro Gordo County. 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 |
| Heartland Power CooperativeElectric cooperative | 4,357 | $207.871,619 kWh, 12.8¢ | — |
| Butler County Rural Electric CooperativeElectric cooperative | 3,903 | $208.641,439 kWh, 14.5¢ | — |
| Prairie Energy CooperativeElectric cooperative | 3,433 | $192.711,363 kWh, 14.1¢ | — |
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); a dash means that its homes buy power from a retail supplier. The 1,000 kWh bill is from the official tariff, before taxes, for the utilities that have a calculator on this site. The Iowa average was $117.30 a month for 861 kWh (13.6¢ per kWh).
Solar power in Mason City
A home solar system on a south-facing roof in Mason City makes about 1,375 kWh a year for each kW of panels (PVWatts, National Laboratory of the Rockies). A 6 kW system makes about 8,250 kWh a year. See what that saves on your utility's rates with the solar savings calculator.
Lower your electric bill in Mason City
- Open your utility above for its average bill, outages and rates, or the bill calculator to check your own bill.
- Help paying your MidAmerican Energy bill: 3 programs, with who qualifies and how to apply.
- Help paying your Alliant Energy (Interstate Power and Light) bill: 4 programs, with who qualifies and how to apply.
- Help paying the electric bill in Iowa: bill assistance, payment plans and discounts.
- Why is my electric bill so high? and the appliance cost calculator.
More about Iowa: Iowa electric rates and all Iowa utilities, business electricity rates and natural gas bills. Other cities: Des Moines, Ames, Ankeny, Cedar Falls, Cedar Rapids, Council Bluffs, Davenport, Dubuque, Iowa City, Marshalltown, Ottumwa, Sioux City.
Who provides electricity in Mason City, IA?
5 electric utilities serve homes in Cerro Gordo County, where Mason City is: MidAmerican Energy, Alliant Energy (Interstate Power and Light), Heartland Power Cooperative, Butler County Rural Electric Cooperative and Prairie Energy Cooperative. The name of your utility is on your bill.
What is the average electric bill in Mason City, IA?
In 2025, the average home bill of these utilities was $92.85 (MidAmerican Energy) to $208.64 (Butler County Rural Electric Cooperative) a month. The Iowa average was $117.30 a month for 861 kWh. Your bill depends on your kWh and your rate plan.
utilityratecalc.com is not part of any utility or city government. Sources: Census Bureau city population estimates, Vintage 2025 (the city and its counties); EIA-861 data, 2025 (utilities by county, homes and average bills).