Montana-Dakota Utilities Co: power outages per year
In 2025 the average Montana-Dakota Utilities Co customer was without power for 1.6 hours, less than the North Dakota average of 3.4 h; up from 1.4 h in 2024. The utility served 100,446 customers in North Dakota and ranks #1 of 1 large North Dakota utilities by outage hours.
By year
| Year | Hours (with major events) | Hours (without) | Interruptions | Customers |
|---|---|---|---|---|
| 2025 | 1.6 | 1.1 | 0.8 | 100,446 |
| 2024 | 1.4 | 1.3 | 1.0 | 98,017 |
| 2023 | 1.4 | — | 0.9 | 100,890 |
| 2022 | 5.3 | — | 1.1 | 100,890 |
| 2021 | 0.7 | — | 0.5 | 100,610 |
| 2020 | 0.9 | — | 0.6 | 101,067 |
"With major events" includes storm days that utilities may exclude from their own reliability targets; it is what customers actually live through. The gap between the two columns shows how much of the year's outage time came from big storms.
Backup power for Montana-Dakota Utilities Co outages
An average outage here lasted about 1.9 hours in 2025. Size backup for the longest outage you want to ride through, not the average.
FAQ
How many hours a year are Montana-Dakota Utilities Co customers without power?
1.6 hours per customer in 2025 including major event days (1.1 h without them), as Montana-Dakota Utilities Co reported to the U.S. EIA.
How long does a typical Montana-Dakota Utilities Co outage last?
About 1.9 hours on average in 2025 (total outage minutes divided by the number of interruptions). Storms make single events much longer.
Source: U.S. EIA Form 861, Reliability file, 2020–2025. Data snapshot . Utilities ranked nationwide →