Deer Lodge CountyPower Outage History
2020–2025 · Montana
Top 20% most reliable nationally — infrequent, short outages.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Oct 18, 2020 | 4 hrs | 6,027 (89%) | Winter Weather |
| Jan 13, 2021 | 14 hrs | 1,679 (25%) | High Wind |
| Jun 22, 2020 | 2 hrs | 1,669 (25%) | Unnamed event |
| Oct 13, 2020 | 8 hrs | 1,649 (24%) | Unnamed event |
| Dec 11, 2020 | 2 hrs | 1,445 (21%) | Unnamed event |
Over the 6 years from 2020 to 2025, Deer Lodge County recorded 227 distinct power outage events, averaging 2.5 hours per event.
The single worst outage on record in Deer Lodge County started October 18, 2020 (Winter Weather), lasting 4 hours and leaving up to 6,027 customers without power (89% of the county) at its peak.
August has historically been the worst month for outages in Deer Lodge County, with 32 events recorded during that month across the dataset.
Based on this history, Deer Lodge County earns a Reliability Grade of A, placing it in the 83rd percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Deer Lodge County's outage profile
See more picks in our Best Small Power Stations (Under 1,000Wh) roundup.
Outage-prep kit
See our outage-prep guides.
Similar counties in Montana
Counties with the closest reliability grade and national percentile to Deer Lodge County.
| County | Grade | National percentile |
|---|---|---|
| Richland County | A | 83rd |
| Beaverhead County | A | 84th |
| Fergus County | A | 82nd |
| Broadwater County | A | 81st |
| Daniels County | A | 81st |
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 Deer Lodge County?
Between 2020 and 2025, Deer Lodge County recorded 227 outage events, averaging 2.5 hours each.
What is Deer Lodge County's reliability grade?
Deer Lodge County has a Reliability Grade of A, in the 83rd national percentile.
What was the worst power outage in Deer Lodge County?
The worst outage on record started October 18, 2020 (Winter Weather), lasting 4 hours and affecting up to 6,027 customers.