Chouteau CountyPower Outage History
2020–2025 · Montana
Worse than average — more frequent or longer outages than most counties. This county's recorded history shows more frequent outages and/or longer restoration times than most US counties over the same 12-year period. If you live here, it's worth taking backup power more seriously than an average household would.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Feb 1, 2020 | 11 hrs | 1,955 (67%) | Unnamed event |
| Sep 14, 2022 | 1 hrs | 1,933 (66%) | Unnamed event |
| Dec 17, 2025 | 24 hrs | 1,793 (61%) | Heavy Snow |
| Aug 1, 2025 | 2 hrs | 1,547 (53%) | Thunderstorm Wind |
| Aug 1, 2025 | 4 hrs | 1,547 (53%) | Thunderstorm Wind |
Over the 6 years from 2020 to 2025, Chouteau County recorded 208 distinct power outage events, averaging 3.3 hours per event.
The single worst outage on record in Chouteau County started February 1, 2020, lasting 11 hours and leaving up to 1,955 customers without power (67% of the county) at its peak.
May has historically been the worst month for outages in Chouteau County, with 24 events recorded during that month across the dataset.
Based on this history, Chouteau County earns a Reliability Grade of D, placing it in the 37th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Chouteau 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 Chouteau County.
| County | Grade | National percentile |
|---|---|---|
| Meagher County | D | 38th |
| Mineral County | D | 39th |
| Flathead County | D | 35th |
| Teton County | C | 41st |
| Granite County | D | 33rd |
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 Chouteau County?
Between 2020 and 2025, Chouteau County recorded 208 outage events, averaging 3.3 hours each.
What is Chouteau County's reliability grade?
Chouteau County has a Reliability Grade of D, in the 37th national percentile.
What was the worst power outage in Chouteau County?
The worst outage on record started February 1, 2020, lasting 11 hours and affecting up to 1,955 customers.