Tri-County Electric Coop (MI)
Cooperative electric utility · Michigan · #576 of 3,199 U.S. utilities by customers · EIA utility #19396
Tri-County Electric Coop (MI) is a cooperative electric utility serving 27,298 customers in Michigan. In 2025 it sold 377 gigawatt-hours of electricity for $61.50M in revenue, an average realized rate of 16.29¢ per kWh across all customer classes and 18.33¢ per kWh for residential customers. Its reported service territory covers 13 counties. EIA records its activities as: distribution, buying distribution, retail marketing.
Customers, sales and rates by customer class (2025)
| Class | Customers | Sales (GWh) | Revenue | Avg realized rate | Share of sales |
|---|---|---|---|---|---|
| Residential | 23,136 | 230 | $42.23M | 18.33¢ | |
| Commercial | 3,951 | 48.6 | $8.95M | 18.40¢ | |
| Industrial | 211 | 98.4 | $10.32M | 10.48¢ | |
| Total | 27,298 | 377 | $61.50M | 16.29¢ |
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 (830 kWh/month).
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 26,610 | 373 | $51.97M | 15.23¢ |
| 2022 | 26,829 | 377 | $57.53M | 16.84¢ |
| 2023 | 26,994 | 362 | $55.33M | 17.06¢ |
| 2024 | 27,142 | 364 | $58.40M | 18.04¢ |
| 2025 | 27,298 | 377 | $61.50M | 18.33¢ |
Reliability (2025)
Average outage time (SAIDI): 1,153 minutes per customer per year
Average outages (SAIFI): 1.82 per customer
Average restoration time (CAIDI): 634 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: 400 GWh
Winter peak demand: 67 MW
Energy losses: 5.6% of energy handled
Meters & rooftop solar (2025)
Smart (AMI) meters: 100.0% of 27,298 meters
Customer-sited generation (net metering): 211 installations, 3.2 MW of capacity
Counties served
Barry, MIClare, MIClinton, MIEaton, MIGratiot, MIIngham, MIIonia, MIIsabella, MIJackson, MIMecosta, MIMontcalm, MIOsceola, MISaginaw, 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 #19396 in the EIA frame.