Thumb Electric Coop of Mich
Cooperative electric utility · Michigan · #1,001 of 3,199 U.S. utilities by customers · EIA utility #18895
Thumb Electric Coop of Mich is a cooperative electric utility serving 12,443 customers in Michigan. In 2025 it sold 191 gigawatt-hours of electricity for $32.09M in revenue, an average realized rate of 16.79¢ per kWh across all customer classes and — per kWh for residential customers. Its reported service territory covers 3 counties.
Customers, sales and rates by customer class (2025)
| Class | Customers | Sales (GWh) | Revenue | Avg realized rate | Share of sales |
|---|---|---|---|---|---|
| Total | 12,443 | 191 | $32.09M | 16.79¢ |
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 (— kWh/month).
This utility files the EIA-861S short form, which reports totals only - no breakdown by customer class is published for it.
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 12,370 | 193 | $24.41M | — |
| 2022 | 12,389 | 189 | $24.01M | — |
| 2023 | 12,395 | 183 | $24.85M | — |
| 2024 | 12,404 | 187 | $26.21M | — |
| 2025 | 12,443 | 191 | $32.09M | — |
Meters & rooftop solar (2025)
Smart (AMI) meters: 100.0% of 14,254 meters
Counties served
Huron, MISanilac, MITuscola, 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 #18895 in the EIA frame.