Marias River Electric Co-op electricity rates
Electric cooperative · Montana
Marias River Electric Co-op is a member-owned electric cooperative, so its customers own it and elect its board, serving 3,819 homes in Montana. Its residential customers pay an average of 11.57¢/kWh including fixed and delivery charges, 36% less than the U.S. average.
Rate basis: EIA-861 2025 annual data, adjusted to the 12 months ending 2026-07 using the state's price trend. This utility files EIA's short form, which reports total sales only, so the rate covers all customer classes.
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Marias River Electric Co-op bill estimates
| Monthly use | At average all-in rate | Base tariff charges* |
|---|---|---|
| 500 kWh | $57.85 | $48.23 |
| 1,000 kWh | $115.70 | $82.45 |
| 1,500 kWh | $173.55 | $116.67 |
| 2,000 kWh | $231.40 | $150.90 |
*Residential - Farm (effective 2013-03-01, $14.00/month customer charge), energy and fixed charges from the OpenEI Utility Rate Database. Riders, fuel adjustments and taxes are often billed separately, so real bills usually land closer to the all-in column. Calculate your bill.
Marias River Electric Co-op residential rate plans
| Plan | Effective | Customer charge | Energy charges |
|---|---|---|---|
| Residential - Farm | 2013-03-01 | $14.00 | 6.84¢ |
Source: OpenEI U.S. Utility Rate Database. Rates change. Check the linked tariff or your bill for current figures.
Marias River Electric Co-op rate history
2015–2025: +30% change in the average residential rate (8.32¢ → 10.85¢). Annual EIA-861 data.
Outages & reliability
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Checking live outages…
Reliability history
Marias River Electric Co-op doesn't report reliability metrics to EIA (common for small utilities).
Outages in counties served (2025)
From ORNL EAGLE-I, which tracks customers without power every 15 minutes. These counts cover every utility in each county. Weighted across Marias River Electric Co-op's counties, customers averaged 5 hr 24 min without power.
| County | Outage min/customer | Days with outages | Peak customers out | Worst day |
|---|---|---|---|---|
| Liberty | 859 | 8 | 1,507 | 2025-12-18 |
| Pondera | 677 | 14 | 4,355 | 2025-12-17 |
| Toole | 0 | 0 | 0 | 2025-01-01 |
Marias River Electric Co-op service area
Marias River Electric Co-op serves 3 counties in Montana and 11 ZIP codes.
Liberty, Pondera, Toole
Cities: Shelby
Programs, smart meters & solar
| Smart meters (AMI) for homes | 100% |
| Time-based rate programs | None reported |
| Net-metered solar homes | 0 reported |
Marias River Electric Co-op at a glance
| Ownership | Electric cooperative |
| Services | — |
| Retail revenue (2025) | $8,160,000 |
| Electricity sold (2025) | 75,218 MWh |
| Balancing authority | NWMT |
| EIA utility ID | 11643 |
Other utilities in Montana
Frequently asked questions
What is Marias River Electric Co-op's electricity rate?
Marias River Electric Co-op residential customers pay an average of 11.57¢ per kWh, all charges included (EIA-861 2025 annual data, adjusted to the 12 months ending 2026-07 using the state's price trend). That's 16% below the Montana average of 13.84¢ and 36% below the U.S. average.
What is the average Marias River Electric Co-op electric bill?
About $190 a month. The average Marias River Electric Co-op home uses 1,641 kWh a month. At 1,000 kWh the bill would be about $116.
How many customers does Marias River Electric Co-op have?
Marias River Electric Co-op serves 3,819 residential customers in Montana, across 3 counties.
Sources: EIA-861 2025 and EIA-861M (through July 2026), OpenEI URDB, ORNL EAGLE-I, U.S. Census. Methodology. Spot an error? Rates change often, so confirm with Marias River Electric Co-op before making decisions.