Montgomery 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 |
|---|---|---|---|
| May 27, 2017 | 8 hrs | 3,074 (13%) | Funnel Cloud |
| Aug 8, 2018 | 2 hrs | 2,933 (13%) | Unnamed event |
| Mar 15, 2025 | 7 hrs | 2,893 (13%) | Thunderstorm Wind |
| Aug 11, 2020 | 2 hrs | 2,803 (12%) | Unnamed event |
| Sep 14, 2021 | 5 hrs | 2,196 (10%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Montgomery County, Indiana that day.
Over the 11 years from 2015 to 2025, Montgomery County recorded 225 distinct power outage events, averaging 2.9 hours per event.
The single worst outage on record in Montgomery County started May 27, 2017 (Funnel Cloud), lasting 8 hours and leaving up to 3,074 customers without power (13% of the county) at its peak.
June has historically been the worst month for outages in Montgomery County, with 30 events recorded during that month across the dataset.
Based on this history, Montgomery County earns a Reliability Grade of A, placing it in the 84th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Indiana
Counties with the closest reliability grade and national percentile to Montgomery County.
| County | Grade | National percentile |
|---|---|---|
| Decatur County | A | 84th |
| Wabash County | A | 83rd |
| DeKalb County | A | 84th |
| Shelby County | A | 82nd |
| Noble County | A | 82nd |
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 Montgomery County?
Between 2015 and 2025, Montgomery County recorded 225 outage events, averaging 2.9 hours each.
What is Montgomery County's reliability grade?
Montgomery County has a Reliability Grade of A, in the 84th national percentile.
What was the worst power outage in Montgomery County?
The worst outage on record started May 27, 2017 (Funnel Cloud), lasting 8 hours and affecting up to 3,074 customers.