Montgomery County Power Outage History
2015–2025 · Indiana
Top 20% most reliable nationally — infrequent, short outages. How grades are calculated
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 |
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).
Sized for Montgomery 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 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 |
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.