Roosevelt CountyPower Outage History
What this grade means
Top 20% most reliable nationally — infrequent, short outages. This county ranks in the most reliable fifth of all US counties in our dataset, based on 12 years of real DOE outage records: outages happen less often here, and when they do occur they tend to be resolved quickly compared to the rest of the country. Baseline outage risk is low, though a severe local storm can still occasionally cause a longer-than-usual outage regardless of the long-term track record.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Sep 30, 2017 | <1 hr | 1,388 (19%) | Drought |
| Sep 18, 2024 | 3 hrs | 1,358 (19%) | Drought |
| Apr 24, 2022 | 3 hrs | 1,289 (18%) | Drought |
| Nov 16, 2023 | <1 hr | 786 (11%) | Unnamed event |
| Nov 16, 2023 | <1 hr | 781 (11%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Roosevelt County, Montana that day.
Over the 9 years from 2017 to 2025, Roosevelt County recorded 96 distinct power outage events, averaging 1.8 hours per event.
The single worst outage on record in Roosevelt County started September 30, 2017 (Drought), lasting less than 1 hour and leaving up to 1,388 customers without power (19% of the county) at its peak.
June has historically been the worst month for outages in Roosevelt County, with 21 events recorded during that month across the dataset.
Based on this history, Roosevelt County earns a Reliability Grade of A, placing it in the 94th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Montana
Counties with the closest reliability grade and national percentile to Roosevelt County.
| County | Grade | National percentile |
|---|---|---|
| Fallon County | A | 94th |
| Big Horn County | A | 94th |
| Powder River County | A | 95th |
| Dawson County | A | 93rd |
| Gallatin County | A | 92nd |
Most reliable counties nationally
The top 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | South Dakota | A | 100th |
| Clearwater County | Minnesota | A | 99th |
| Limestone County | Alabama | A | 99th |
Least reliable counties nationally
The bottom 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | West Virginia | F | 0th |
| Lincoln County | West Virginia | F | 0th |
| Cameron Parish | Louisiana | F | 0th |
FAQ
How often does power go out in Roosevelt County?
Between 2017 and 2025, Roosevelt County recorded 96 outage events, averaging 1.8 hours each.
What is Roosevelt County's reliability grade?
Roosevelt County has a Reliability Grade of A, in the 94th national percentile.
What was the worst power outage in Roosevelt County?
The worst outage on record started September 30, 2017 (Drought), lasting less than 1 hour and affecting up to 1,388 customers.