Marias River Electric Coop Inc
Cooperative electric utility · Montana · #1,723 of 3,199 U.S. utilities by customers · EIA utility #11643
Marias River Electric Coop Inc is a cooperative electric utility serving 3,819 customers in Montana. In 2025 it sold 75.2 gigawatt-hours of electricity for $8.16M in revenue, an average realized rate of 10.85¢ 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 | 3,819 | 75.2 | $8.16M | 10.85¢ |
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 | 3,829 | 73.4 | $6.77M | — |
| 2022 | 3,823 | 75.0 | $7.65M | — |
| 2023 | 3,836 | 75.3 | $7.17M | — |
| 2024 | 3,833 | 75.1 | $7.67M | — |
| 2025 | 3,819 | 75.2 | $8.16M | — |
Meters & rooftop solar (2025)
Smart (AMI) meters: 100.0% of 3,819 meters
Counties served
Liberty, MTPondera, MTToole, 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 #11643 in the EIA frame.