Southeast Electric Co-op electricity rates
Electric cooperative · Montana
Southeast Electric Co-op is a member-owned electric cooperative, so its customers own it and elect its board, serving 0 homes in Montana. Its residential customers pay an average of 13.14¢/kWh including fixed and delivery charges, 27% 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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Southeast Electric Co-op bill estimates
| Monthly use | At average all-in rate | Base tariff charges* |
|---|---|---|
| 500 kWh | $65.70 | $77.00 |
| 1,000 kWh | $131.40 | $124.00 |
| 1,500 kWh | $197.10 | $171.00 |
| 2,000 kWh | $262.80 | $218.00 |
*Residential (effective 2010-01-01, $30.00/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.
Southeast Electric Co-op residential rate plans
| Plan | Effective | Customer charge | Energy charges |
|---|---|---|---|
| Residential | 2010-01-01 | $30.00 | 9.40¢ |
| Residential (Most Residences: Heat Meters)time-of-use | 2010-01-01 | $30.00 | 94.0¢ (12am–12am) — summer weekdays |
| Electric Heat Residentialtime-of-use | 2010-01-01 | $30.00 | 9.4¢ (12am–12am) — summer weekdays |
| Residential (w/ Heat Meter)time-of-use | 2010-01-01 | $30.00 | 9.4¢ (12am–12am) — summer weekdays |
| Residential (Annual Stock Water Wells) | 2010-01-01 | $30.00 | 9.40¢ |
| Residential | 2010-01-01 | $30.00 | 9.40¢ |
| Stock Water Well | 2010-01-01 | $30.00 | 9.40¢ |
| Residential (Most Residences) | 2010-01-01 | $30.00 | 9.40¢ |
Source: OpenEI U.S. Utility Rate Database. Rates change. Check the linked tariff or your bill for current figures.
Southeast Electric Co-op rate history
2015–2025: +9% change in the average residential rate (11.35¢ → 12.32¢). Annual EIA-861 data.
Outages & reliability
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Reliability history
| 2019 | Southeast Electric Co-op | Montana avg | U.S. avg |
|---|---|---|---|
| Outage minutes per customer (SAIDI) | 443 | 285 | 266 |
| Outages per customer (SAIFI) | 1.33 | 1.34 | |
| Outage minutes excluding major storms | 443 | 136 | 121 |
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 Southeast Electric Co-op's counties, customers averaged 21 min without power.
| County | Outage min/customer | Days with outages | Peak customers out | Worst day |
|---|---|---|---|---|
| Powder River | 78 | 1 | 59 | 2025-11-13 |
| Custer | 24 | 13 | 1,486 | 2025-02-20 |
| Fallon | 6 | 2 | 80 | 2025-09-17 |
| Carter | 1 | 0 | 1 | 2025-11-13 |
Southeast Electric Co-op service area
Southeast Electric Co-op serves 4 counties in Montana and 5 ZIP codes.
Carter, Custer, Fallon, Powder River
Programs, smart meters & solar
| Smart meters (AMI) for homes | 100% |
| Time-based rate programs | None reported |
| Net-metered solar homes | 0 reported |
Southeast Electric Co-op at a glance
| Ownership | Electric cooperative |
| Services | — |
| Retail revenue (2025) | $11,031,000 |
| Electricity sold (2025) | 89,550 MWh |
| Balancing authority | WAUW |
| EIA utility ID | 17593 |
Other utilities in Montana
Frequently asked questions
What is Southeast Electric Co-op's electricity rate?
Southeast Electric Co-op residential customers pay an average of 13.14¢ 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 5% below the Montana average of 13.84¢ and 27% below the U.S. average.
What is the average Southeast Electric Co-op electric bill?
EIA doesn't publish residential sales for Southeast Electric Co-op.
How many customers does Southeast Electric Co-op have?
Southeast Electric Co-op serves 0 residential customers and 2,196 customers in total in Montana, across 4 counties.
How reliable is Southeast Electric Co-op?
In 2019, the average Southeast Electric Co-op customer was without power for 7 hr 23 min (SAIDI) over undefined interruptions (SAIFI), including major storms. Excluding major event days it was 7 hr 23 min. The Montana average was 4 hr 45 min and the U.S. average 4 hr 26 min.
Does Southeast Electric Co-op offer time-of-use rates?
Yes. The OpenEI rate database lists 3 time-of-use residential plans, including Residential (Most Residences: Heat Meters). Running big appliances off-peak can cut their cost. Pick the plan in the calculator above to see by how much.
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 Southeast Electric Co-op before making decisions.