Electricity in Sun Prairie, Wisconsin
Sun Prairie has its own city-owned electric utility, Sun Prairie Utilities. We Energies, Alliant Energy (Wisconsin Power and Light), Madison Gas and Electric, Adams-Columbia Electric Cooperative, City of Stoughton, Rock Energy Cooperative, Village of Waunakee and Village of Mt. Horeb also serve homes in Dane County, so check the name on your bill. The average Sun Prairie Utilities home paid $74.04 a month in 2025 (12.1¢ per kWh). The Wisconsin average was $120.60.
- 39,227 people (2025 estimate)
- Dane County
- EIA data, 2025
Electric utilities in Sun Prairie
EIA lists utilities by county, not by city. These utilities serve homes in Dane County. Your address has one utility: its name is on your bill, or type your ZIP code in the utility finder.
| Utility | Homes in Wisconsin | Average bill 2025 | 1,000 kWh now |
|---|---|---|---|
| Sun Prairie UtilitiesCity-owned utility of Sun Prairie | 17,082 | $74.04611 kWh, 12.1¢ | — |
| We EnergiesInvestor-owned utility · bill calculator | 1,056,086 | $131.37640 kWh, 20.5¢ | $210.74 |
| Alliant Energy (Wisconsin Power and Light)Investor-owned utility · bill calculator | 440,746 | $128.22694 kWh, 18.5¢ | $185.89 |
| Madison Gas and ElectricInvestor-owned utility · bill calculator | 148,482 | $106.58505 kWh, 21.1¢ | $199.12 |
| Adams-Columbia Electric CooperativeElectric cooperative | 36,159 | $122.04643 kWh, 19.0¢ | — |
| City of StoughtonCity utility | 8,338 | $86.27671 kWh, 12.8¢ | — |
| Rock Energy CooperativeElectric cooperative | 7,409 | $140.90984 kWh, 14.3¢ | — |
| Village of WaunakeeCity utility | 6,906 | $87.54721 kWh, 12.1¢ | — |
| Village of Mt. HorebCity utility | 3,644 | $89.86691 kWh, 13.0¢ | — |
2 smaller utilities with fewer than 1,000 homes are 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 Wisconsin average was $120.60 a month for 667 kWh (18.1¢ per kWh).
Solar power in Sun Prairie
A home solar system on a south-facing roof in Sun Prairie makes about 1,314 kWh a year for each kW of panels (PVWatts, National Laboratory of the Rockies). A 6 kW system makes about 7,886 kWh a year. See what that saves on your utility's rates with the solar savings calculator.
Lower your electric bill in Sun Prairie
- Open your utility above for its average bill, outages and rates, or the bill calculator to check your own bill.
- Help paying your We Energies bill: 4 programs, with who qualifies and how to apply.
- Help paying your Alliant Energy (Wisconsin Power and Light) bill: 5 programs, with who qualifies and how to apply.
- Help paying your Madison Gas and Electric bill: 5 programs, with who qualifies and how to apply.
- Help paying the electric bill in Wisconsin: bill assistance, payment plans and discounts.
- Why is my electric bill so high? and the appliance cost calculator.
More about Wisconsin: Wisconsin electric rates and all Wisconsin utilities, business electricity rates and natural gas bills. All cities of the county: electricity in Dane County. Other cities: Madison, Milwaukee, Appleton, Eau Claire, Fond du Lac, Green Bay, Janesville, Kenosha, La Crosse, Manitowoc, Mequon, Oshkosh.
Who provides electricity in Sun Prairie, WI?
Sun Prairie has its own city-owned electric utility, Sun Prairie Utilities. We Energies, Alliant Energy (Wisconsin Power and Light), Madison Gas and Electric, Adams-Columbia Electric Cooperative, City of Stoughton, Rock Energy Cooperative, Village of Waunakee and Village of Mt. Horeb also serve homes in Dane County, so check the name on your bill.
What is the average electric bill in Sun Prairie, WI?
The average Sun Prairie Utilities home paid $74.04 a month in 2025 (12.1¢ per kWh). The Wisconsin average was $120.60 a month for 667 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).