Phillips CountyPower Outage History
2020–2025 · Montana
Better than average — fewer or shorter outages than most counties. This county's outage history is better than the national median: recorded outages are less frequent and/or shorter in duration than a typical US county experienced over the same 12-year period. It isn't in the top tier nationally, but its track record points to lower-than-average outage risk.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Mar 8, 2021 | 2 hrs | 2,796 (100%) | Drought |
| Jul 28, 2020 | 2 hrs | 2,432 (87%) | Thunderstorm Wind |
| Nov 5, 2021 | 7 hrs | 2,330 (83%) | Drought |
| Aug 4, 2022 | 3 hrs | 2,067 (74%) | Thunderstorm Wind |
| May 28, 2023 | 2 hrs | 1,940 (69%) | Unnamed event |
Over the 6 years from 2020 to 2025, Phillips County recorded 141 distinct power outage events, averaging 5.5 hours per event.
The single worst outage on record in Phillips County started March 8, 2021 (Drought), lasting 2 hours and leaving up to 2,796 customers without power (100% of the county) at its peak.
July has historically been the worst month for outages in Phillips County, with 22 events recorded during that month across the dataset.
Based on this history, Phillips County earns a Reliability Grade of B, placing it in the 69th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Phillips County's outage profile
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Read our mission →Similar counties in Montana
Counties with the closest reliability grade and national percentile to Phillips County.
| County | Grade | National percentile |
|---|---|---|
| Liberty County | B | 69th |
| Wibaux County | B | 69th |
| Cascade County | B | 69th |
| Prairie County | B | 71st |
| Ravalli County | B | 72nd |
Most reliable counties in Montana
The top 3 counties in Montana by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Powder River County | A | 95th |
| Roosevelt County | A | 94th |
| Fallon County | A | 94th |
Least reliable counties in Montana
The bottom 3 counties in Montana by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Lincoln County | F | 14th |
| Sanders County | D | 20th |
| Madison County | D | 31st |
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 Phillips County?
Between 2020 and 2025, Phillips County recorded 141 outage events, averaging 5.5 hours each.
What is Phillips County's reliability grade?
Phillips County has a Reliability Grade of B, in the 69th national percentile.
What was the worst power outage in Phillips County?
The worst outage on record started March 8, 2021 (Drought), lasting 2 hours and affecting up to 2,796 customers.