Wisconsin · EIA utility 18312 · Full-service utility
Sun Prairie Utilities electricity rates in Wisconsin, 2025
Sun Prairie Utilities’s 17,082 residential customers paid an average of 12.11¢ per kWh in 2025, 33% below the Wisconsin average of 18.08¢. The typical home used 611 kWh a month, for an average bill of $74.
- 12.11¢avg ¢/kWh (2025)−0.02¢ (-0.1%) vs 2024
- $74Avg monthly billWisconsin: $121
- 611 kWhAvg monthly useWisconsin: 667 kWh
- 17,082Residential customersFull-service utility
| Sector | Customers | Sales (MWh) | Revenue | ¢/kWh 2025 | ¢/kWh 2024 | Change |
|---|---|---|---|---|---|---|
| Residential | 17,082 | 125,279 | $15,177,400 | 12.11¢ | 12.13¢ | −0.02¢ (-0.1%) |
| Commercial | 1,820 | 149,061 | $15,630,700 | 10.49¢ | 10.20¢ | +0.29¢ (+2.8%) |
| Industrial | 4 | 29,195 | $2,399,200 | 8.22¢ | 8.24¢ | −0.02¢ (-0.3%) |
| All sectors | 18,906 | 303,535 | $33,207,300 | 10.94¢ | 10.77¢ | +0.17¢ (+1.6%) |
How Sun Prairie Utilities compares
- Wisconsin residential average, 2025: 18.08¢ per kWh, 667 kWh a month, $121 average bill. U.S. average: 17.23¢, 874 kWh, $151.
- Among 61 full-service utilities in Wisconsin with at least 1,000 residential customers, Sun Prairie Utilities ranks 7 of 61 from lowest to highest average price.
- Latest monthly figure: Wisconsin homes paid 19.41¢ per kWh in August 2026 (preliminary), against 18.44¢ in August 2025. Summer months often run higher than the annual average.
- From 2024 to 2025 this average fell 0.1%; the state average rose 5.2%.
- Sun Prairie Utilities is a municipal utility, owned by the local government; the city council or utility board sets rates. Balancing authority: MISO.
Where Sun Prairie Utilities serves
EIA lists 1 Wisconsin county in its 2025 service territory: Dane.
3 ZIP codes are matched to Sun Prairie Utilities in NREL’s 2024 ZIP file: 53532, 53590, 53596. Utility boundaries do not follow ZIP lines, so a ZIP can have more than one provider.
Wisconsin full-service utilities with similar rates
| Provider | ¢/kWh | Avg bill | Customers |
|---|---|---|---|
| City of Westby | 11.94¢ | $82 | 1,056 |
| Hartford Electric | 11.94¢ | $75 | 7,039 |
| Village of Prairie Du Sac (WI) | 11.97¢ | $79 | 1,919 |
| Village of Waunakee (WI) | 12.14¢ | $88 | 6,906 |
| City of Plymouth (WI) | 12.16¢ | $89 | 7,331 |
| Waupun Utilities | 12.35¢ | $85 | 3,957 |
| Slinger Utilities | 12.36¢ | $86 | 2,830 |
| Reedsburg Utility Comm | 12.36¢ | $87 | 4,956 |
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.