Tongue River Electric Coop Inc
Cooperative electric utility · Montana · #1,519 of 3,199 U.S. utilities by customers · EIA utility #19022
Tongue River Electric Coop Inc is a cooperative electric utility serving 5,229 customers in Montana. In 2025 it sold 91.9 gigawatt-hours of electricity for $13.54M in revenue, an average realized rate of 14.73¢ per kWh across all customer classes and — per kWh for residential customers. Its reported service territory covers 8 counties.
Customers, sales and rates by customer class (2025)
| Class | Customers | Sales (GWh) | Revenue | Avg realized rate | Share of sales |
|---|---|---|---|---|---|
| Total | 5,229 | 91.9 | $13.54M | 14.73¢ |
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 | 4,981 | 101 | $13.26M | — |
| 2022 | 5,162 | 98.6 | $13.16M | — |
| 2023 | 5,154 | 95.8 | $12.96M | — |
| 2024 | 5,177 | 96.7 | $13.16M | — |
| 2025 | 5,229 | 91.9 | $13.54M | — |
Meters & rooftop solar (2025)
Smart (AMI) meters: 100.0% of 5,229 meters
Counties served
Big Horn, MTCarter, MTCuster, MTDawson, MTFallon, MTPowder River, MTPrairie, MTRosebud, MT
Other large utilities in Montana
- NorthWestern Energy LLC - (MT) - 439,003 customers, residential 14.42¢
- Flathead Electric Coop Inc - 77,288 customers, residential 10.04¢
- Yellowstone Valley Elec Co-op - 23,683 customers, residential 14.22¢
- USBIA-Mission Valley Power - 23,250 customers, residential 9.39¢
- Missoula Electric Coop, Inc - 16,781 customers, residential 10.93¢
- Ravalli County Elec Coop, Inc - 12,194 customers, residential —
- Glacier Electric Coop, Inc - 7,964 customers, residential —
- Fergus Electric Coop, Inc - 7,157 customers, residential 15.91¢
All Montana utilities and rates
Source: U.S. Energy Information Administration, Form EIA-861 2025 (filed by the utility; figures as published). Utility #19022 in the EIA frame.