Coldwater Board of Public Util
Municipal electric utility · Michigan · #1,266 of 3,199 U.S. utilities by customers · EIA utility #3915
Coldwater Board of Public Util is a municipal electric utility serving 7,845 customers in Michigan. In 2025 it sold 471 gigawatt-hours of electricity for $50.53M in revenue, an average realized rate of 10.72¢ per kWh across all customer classes and 15.61¢ 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 | 6,420 | 46.0 | $7.18M | 15.61¢ | |
| Commercial | 1,360 | 48.5 | $7.13M | 14.70¢ | |
| Industrial | 65 | 377 | $36.22M | 9.61¢ | |
| Total | 7,845 | 471 | $50.53M | 10.72¢ |
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 (597 kWh/month).
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 7,390 | 452 | $40.40M | 12.31¢ |
| 2022 | 7,431 | 459 | $44.76M | 13.58¢ |
| 2023 | 7,701 | 473 | $46.54M | 13.88¢ |
| 2024 | 7,829 | 475 | $47.93M | 14.86¢ |
| 2025 | 7,845 | 471 | $50.53M | 15.61¢ |
Reliability (2025)
Average outage time (SAIDI): 310 minutes per customer per year
Average outages (SAIFI): 0.94 per customer
Average restoration time (CAIDI): 330 minutes
As reported for Michigan 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: — GWh
Wholesale power purchased: 479 GWh
Winter peak demand: 99 MW
Energy losses: 1.6% of energy handled
Meters & rooftop solar (2025)
Smart (AMI) meters: 100.0% of 7,845 meters
Counties served
Branch, MI
Other large utilities in Michigan
- DTE Electric Company - 2,290,492 customers, residential 20.25¢
- Consumers Energy Co - (MI) - 1,900,985 customers, residential 20.66¢
- Great Lakes Energy Coop - 135,145 customers, residential 20.32¢
- City of Lansing - (MI) - 98,331 customers, residential 19.44¢
- Upper Peninsula Power Company - 53,997 customers, residential 27.98¢
- Cloverland Electric Co-op - 44,010 customers, residential 14.27¢
- Cherryland Electric Coop Inc - 39,114 customers, residential 17.29¢
- Upper Michigan Energy Resources Corp. - 37,420 customers, residential 17.46¢
All Michigan utilities and rates
Source: U.S. Energy Information Administration, Form EIA-861 2025 (filed by the utility; figures as published). Utility #3915 in the EIA frame.