Wisconsin · EIA utility 18312

Sun Prairie Utilities

Residential electricity records · Municipal

Annual average electricity bill

2024 to 2025

$71.38 → $74.04 per customer · +$2.66 change

Revenue per kWh-$0.11

Usage per customer+$2.77

Reported residential service
Year	Monthly bill	Monthly kWh	Revenue per kWh	Customers
2023 source workbook	$70.08	591.7	11.84¢	16,436
2024 source workbook	$71.38	588.4	12.13¢	16,647
2025 source workbook	$74.04	611.2	12.11¢	17,082

Changes in average monthly bill per reported customer
Periods	Earlier bill	Later bill	Bill change	Contribution from revenue per kWh	Contribution from usage
2023 to 2024	$70.08	$71.38	+$1.30	+$1.70	-$0.40
2024 to 2025	$71.38	$74.04	+$2.66	-$0.11	+$2.77

One customer account can have multiple events. The rate uses the customer count in the same month of the EIA-112 survey.

2024 EIA residential nonpayment records
Month	Final notices	Disconnections	Reconnections	Customers	Disconnections per 1,000 customers
January 2024	1,352	Unavailable	Unavailable	18,244	Unavailable
February 2024	1,619	Unavailable	Unavailable	18,260	Unavailable
March 2024	1,726	2	2	18,274	0.1
April 2024	1,867	Unavailable	Unavailable	18,279	Unavailable
May 2024	1,010	356	131	18,376	19.4
June 2024	1,415	110	23	18,386	6
July 2024	894	75	41	18,393	4.1
August 2024	2,260	148	50	18,405	8
September 2024	1,861	138	71	18,423	7.5
October 2024	1,668	182	92	18,425	9.9
November 2024	1,743	190	85	18,509	10.3
December 2024	1,706	3	3	18,510	0.2

Average bill divides residential revenue by reported customers. Usage per customer divides residential kWh by the same count. Revenue per kWh divides total revenue by total kWh. Annual monthly averages divide each annual per-customer total by 12. Individual bills depend on usage, tariff and charges.
The contribution from revenue per kWh multiplies its change by the average of the two usage figures. The contribution from usage multiplies its change by the average of the two per-kWh figures. These contributions sum to the bill change before display rounding.
Utility annual rows use observed EIA-861 full-service residential data. A comparison requires matching form part and balancing-authority coverage. Monthly utility rows are reported full-service data from EIA-861M. State and national monthly totals include EIA adjustments. Compare the same calendar month across years to account for seasonality.
EIA-112 utility records match the EIA utility directory by unambiguous utility name and state. The report counts nonpayment events, including repeats on the same account. Reconnection totals cover events during the same month. State totals include EIA adjustments. An unavailable cell indicates missing or unmatched data.
Service counties come from the 2025 EIA-861 directory. A listed utility can serve part of a county. Bill averages on a utility page cover its reported customers across the state.