Oconomowoc Utilities
Municipal electric utility · Wisconsin · #1,046 of 3,199 U.S. utilities by customers · EIA utility #13963
Oconomowoc Utilities is a municipal electric utility serving 11,754 customers in Wisconsin. In 2025 it sold 227 gigawatt-hours of electricity for $27.79M in revenue, an average realized rate of 12.25¢ per kWh across all customer classes and 14.17¢ per kWh for residential customers. Its reported service territory covers 1 counties. EIA records its activities as: distribution.
Customers, sales and rates by customer class (2025)
| Class | Customers | Sales (GWh) | Revenue | Avg realized rate | Share of sales |
|---|---|---|---|---|---|
| Residential | 10,391 | 84.9 | $12.03M | 14.17¢ | |
| Commercial | 1,360 | 118 | $13.59M | 11.56¢ | |
| Industrial | 3 | 24.5 | $2.17M | 8.88¢ | |
| Total | 11,754 | 227 | $27.79M | 12.25¢ |
Average realized rate = revenue divided by sales as reported on EIA Form 861. It blends fixed charges, demand charges and riders into one per-kWh figure; it is not the utility's tariff rate. Estimated residential bill assumes the average residential customer's actual 2025 usage (681 kWh/month).
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 10,319 | 230 | $25.01M | 12.53¢ |
| 2022 | 10,641 | 226 | $26.91M | 13.55¢ |
| 2023 | 11,188 | 221 | $26.21M | 13.53¢ |
| 2024 | 11,376 | 220 | $25.87M | 13.75¢ |
| 2025 | 11,754 | 227 | $27.79M | 14.17¢ |
Reliability (2025)
Average outage time (SAIDI): 11 minutes per customer per year
Average outages (SAIFI): 0.17 per customer
Average restoration time (CAIDI): 63 minutes
As reported for Wisconsin under the Other standard, with major event days included where the standard reports them. Lower is better; see the reliability rankings.
Energy supply (2025)
Net generation: 0.0 GWh
Wholesale power purchased: 233 GWh
Winter peak demand: 35 MW
Energy losses: 2.6% of energy handled
Meters & rooftop solar (2025)
Smart (AMI) meters: 100.0% of 12,028 meters
Customer-sited generation (net metering): 97 installations, 0.8 MW of capacity
Counties served
Waukesha, WI
Other large utilities in Wisconsin
- Wisconsin Electric Power Co - 1,179,163 customers, residential 20.53¢
- Wisconsin Power & Light Co - 505,706 customers, residential 18.47¢
- Wisconsin Public Service Corp - 472,199 customers, residential 17.20¢
- Northern States Power Co - 273,992 customers, residential 15.55¢
- Madison Gas & Electric Co - 168,439 customers, residential 21.11¢
- Adams-Columbia Electric Coop - 39,826 customers, residential 18.98¢
- Polk-Burnett Electric Coop - 22,408 customers, residential 15.96¢
- Riverland Energy Cooperative - 20,219 customers, residential 16.19¢
All Wisconsin utilities and rates
Source: U.S. Energy Information Administration, Form EIA-861 2025 (filed by the utility; figures as published). Utility #13963 in the EIA frame.