Lake Mills Light & Water
Municipal electric utility · Wisconsin · #1,596 of 3,199 U.S. utilities by customers · EIA utility #10605
Lake Mills Light & Water is a municipal electric utility serving 4,618 customers in Wisconsin. In 2025 it sold 63.7 gigawatt-hours of electricity for $8.65M in revenue, an average realized rate of 13.59¢ per kWh across all customer classes and 14.54¢ 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 | 4,134 | 31.0 | $4.51M | 14.54¢ | |
| Commercial | 484 | 32.7 | $4.15M | 12.69¢ | |
| Total | 4,618 | 63.7 | $8.65M | 13.59¢ |
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 (625 kWh/month).
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 4,373 | 64.2 | $7.91M | 13.50¢ |
| 2022 | 4,460 | 64.9 | $8.63M | 14.54¢ |
| 2023 | 4,517 | 66.6 | $8.60M | 14.05¢ |
| 2024 | 4,580 | 63.0 | $8.13M | 13.86¢ |
| 2025 | 4,618 | 63.7 | $8.65M | 14.54¢ |
Energy supply (2025)
Net generation: 0.0 GWh
Wholesale power purchased: 66.8 GWh
Winter peak demand: 10 MW
Energy losses: 4.6% of energy handled
Meters & rooftop solar (2025)
Smart (AMI) meters: 98.6% of 4,636 meters
Customer-sited generation (net metering): 37 installations, 0.3 MW of capacity
Counties served
Jefferson, 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 #10605 in the EIA frame.