City of Plymouth - (WI)
Municipal electric utility · Wisconsin · #1,212 of 3,199 U.S. utilities by customers · EIA utility #15159
City of Plymouth - (WI) is a municipal electric utility serving 8,688 customers in Wisconsin. In 2025 it sold 257 gigawatt-hours of electricity for $25.51M in revenue, an average realized rate of 9.91¢ per kWh across all customer classes and 12.16¢ per kWh for residential customers. Its reported service territory covers 2 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 | 7,331 | 64.1 | $7.79M | 12.16¢ | |
| Commercial | 1,350 | 98.4 | $9.90M | 10.06¢ | |
| Industrial | 7 | 94.9 | $7.82M | 8.24¢ | |
| Total | 8,688 | 257 | $25.51M | 9.91¢ |
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 (728 kWh/month).
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 8,487 | 266 | $24.71M | 11.57¢ |
| 2022 | 8,521 | 265 | $27.03M | 12.49¢ |
| 2023 | 8,544 | 261 | $25.29M | 12.07¢ |
| 2024 | 8,768 | 259 | $24.35M | 11.80¢ |
| 2025 | 8,688 | 257 | $25.51M | 12.16¢ |
Reliability (2025)
Average outage time (SAIDI): 11 minutes per customer per year
Average outages (SAIFI): 0.10 per customer
Average restoration time (CAIDI): 109 minutes
As reported for Wisconsin under the IEEE 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: 265 GWh
Winter peak demand: 38 MW
Energy losses: 2.8% of energy handled
Meters & rooftop solar (2025)
Smart (AMI) meters: 99.9% of 8,959 meters
Customer-sited generation (net metering): 79 installations, 1.9 MW of capacity
Counties served
Fond Du Lac, WISheboygan, 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 #15159 in the EIA frame.